diff options
| author | wbx <wbx@3c298f89-4303-0410-b956-a3cf2f4a3e73> | 2006-01-31 17:00:21 +0000 |
|---|---|---|
| committer | wbx <wbx@3c298f89-4303-0410-b956-a3cf2f4a3e73> | 2006-01-31 17:00:21 +0000 |
| commit | 9f0f0deaf76bbf66a9ae7f575d48531f13cc0168 (patch) | |
| tree | d9667e4c37dc5f101414bd8b8e28d71a799bbb71 /openwrt/target/linux/generic-2.4/patches | |
| parent | a68085ce6263f6e068e9e8d1760f33d53e6c5ea3 (diff) | |
remove pfring patches
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@3095 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'openwrt/target/linux/generic-2.4/patches')
| -rw-r--r-- | openwrt/target/linux/generic-2.4/patches/223-pf_ring.patch | 6444 |
1 files changed, 0 insertions, 6444 deletions
diff --git a/openwrt/target/linux/generic-2.4/patches/223-pf_ring.patch b/openwrt/target/linux/generic-2.4/patches/223-pf_ring.patch deleted file mode 100644 index 1235e1044..000000000 --- a/openwrt/target/linux/generic-2.4/patches/223-pf_ring.patch +++ /dev/null @@ -1,6444 +0,0 @@ -diff --unified --recursive --new-file linux-2.4.30/include/linux/ring.h linux-2.4.30-1-686-smp-ring3/include/linux/ring.h ---- linux-2.4.30/include/linux/ring.h 1970-01-01 01:00:00.000000000 +0100 -+++ linux-2.4.30-1-686-smp-ring3/include/linux/ring.h 2005-10-22 23:08:27.388011250 +0200 -@@ -0,0 +1,108 @@ -+/* -+ * Definitions for packet ring -+ * -+ * 2004 - Luca Deri <deri@ntop.org> -+ */ -+#ifndef __RING_H -+#define __RING_H -+ -+ -+#define INCLUDE_MAC_INFO -+ -+#ifdef INCLUDE_MAC_INFO -+#define SKB_DISPLACEMENT 14 /* Include MAC address information */ -+#else -+#define SKB_DISPLACEMENT 0 /* Do NOT include MAC address information */ -+#endif -+ -+#define RING_MAGIC -+#define RING_MAGIC_VALUE 0x88 -+#define RING_FLOWSLOT_VERSION 5 -+#define RING_VERSION "3.0" -+ -+#define SO_ADD_TO_CLUSTER 99 -+#define SO_REMOVE_FROM_CLUSTER 100 -+#define SO_SET_REFLECTOR 101 -+ -+/* *********************************** */ -+ -+#ifndef HAVE_PCAP -+struct pcap_pkthdr { -+ struct timeval ts; /* time stamp */ -+ u_int32_t caplen; /* length of portion present */ -+ u_int32_t len; /* length this packet (off wire) */ -+}; -+#endif -+ -+/* *********************************** */ -+ -+enum cluster_type { -+ cluster_per_flow = 0, -+ cluster_round_robin -+}; -+ -+/* *********************************** */ -+ -+#define RING_MIN_SLOT_SIZE (60+sizeof(struct pcap_pkthdr)) -+#define RING_MAX_SLOT_SIZE (1514+sizeof(struct pcap_pkthdr)) -+ -+/* *********************************** */ -+ -+typedef struct flowSlotInfo { -+ u_int16_t version, sample_rate; -+ u_int32_t tot_slots, slot_len, tot_mem; -+ -+ u_int64_t tot_pkts, tot_lost; -+ u_int64_t tot_insert, tot_read; -+ u_int16_t insert_idx; -+ u_int16_t remove_idx; -+} FlowSlotInfo; -+ -+/* *********************************** */ -+ -+typedef struct flowSlot { -+#ifdef RING_MAGIC -+ u_char magic; /* It must alwasy be zero */ -+#endif -+ u_char slot_state; /* 0=empty, 1=full */ -+ u_char bucket; /* bucket[bucketLen] */ -+} FlowSlot; -+ -+/* *********************************** */ -+ -+#ifdef __KERNEL__ -+ -+FlowSlotInfo* getRingPtr(void); -+int allocateRing(char *deviceName, u_int numSlots, -+ u_int bucketLen, u_int sampleRate); -+unsigned int pollRing(struct file *fp, struct poll_table_struct * wait); -+void deallocateRing(void); -+ -+/* ************************* */ -+ -+typedef int (*handle_ring_skb)(struct sk_buff *skb, -+ u_char recv_packet, u_char real_skb); -+extern handle_ring_skb get_skb_ring_handler(void); -+extern void set_skb_ring_handler(handle_ring_skb the_handler); -+extern void do_skb_ring_handler(struct sk_buff *skb, -+ u_char recv_packet, u_char real_skb); -+ -+typedef int (*handle_ring_buffer)(struct net_device *dev, -+ char *data, int len); -+extern handle_ring_buffer get_buffer_ring_handler(void); -+extern void set_buffer_ring_handler(handle_ring_buffer the_handler); -+extern int do_buffer_ring_handler(struct net_device *dev, -+ char *data, int len); -+#endif /* __KERNEL__ */ -+ -+/* *********************************** */ -+ -+#define PF_RING 27 /* Packet Ring */ -+#define SOCK_RING PF_RING -+ -+/* ioctl() */ -+#define SIORINGPOLL 0x8888 -+ -+/* *********************************** */ -+ -+#endif /* __RING_H */ -diff --unified --recursive --new-file linux-2.4.30/include/net/sock.h linux-2.4.30-1-686-smp-ring3/include/net/sock.h ---- linux-2.4.30/include/net/sock.h 2004-11-17 12:54:22.000000000 +0100 -+++ linux-2.4.30-1-686-smp-ring3/include/net/sock.h 2005-10-22 23:08:27.976048000 +0200 -@@ -699,6 +699,9 @@ - #if defined (CONFIG_PACKET) || defined(CONFIG_PACKET_MODULE) - struct packet_opt *af_packet; - #endif -+#if defined(CONFIG_RING) || defined(CONFIG_RING_MODULE) -+ struct ring_opt *pf_ring; -+#endif - #if defined(CONFIG_X25) || defined(CONFIG_X25_MODULE) - x25_cb *x25; - #endif -diff --unified --recursive --new-file linux-2.4.30/include/net/sock.h.ORG linux-2.4.30-1-686-smp-ring3/include/net/sock.h.ORG ---- linux-2.4.30/include/net/sock.h.ORG 1970-01-01 01:00:00.000000000 +0100 -+++ linux-2.4.30-1-686-smp-ring3/include/net/sock.h.ORG 2005-10-22 23:08:27.940045750 +0200 -@@ -0,0 +1,1400 @@ -+/* -+ * INET An implementation of the TCP/IP protocol suite for the LINUX -+ * operating system. INET is implemented using the BSD Socket -+ * interface as the means of communication with the user level. -+ * -+ * Definitions for the AF_INET socket handler. -+ * -+ * Version: @(#)sock.h 1.0.4 05/13/93 -+ * -+ * Authors: Ross Biro, <bir7@leland.Stanford.Edu> -+ * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> -+ * Corey Minyard <wf-rch!minyard@relay.EU.net> -+ * Florian La Roche <flla@stud.uni-sb.de> -+ * -+ * Fixes: -+ * Alan Cox : Volatiles in skbuff pointers. See -+ * skbuff comments. May be overdone, -+ * better to prove they can be removed -+ * than the reverse. -+ * Alan Cox : Added a zapped field for tcp to note -+ * a socket is reset and must stay shut up -+ * Alan Cox : New fields for options -+ * Pauline Middelink : identd support -+ * Alan Cox : Eliminate low level recv/recvfrom -+ * David S. Miller : New socket lookup architecture. -+ * Steve Whitehouse: Default routines for sock_ops -+ * -+ * This program is free software; you can redistribute it and/or -+ * modify it under the terms of the GNU General Public License -+ * as published by the Free Software Foundation; either version -+ * 2 of the License, or (at your option) any later version. -+ */ -+#ifndef _SOCK_H -+#define _SOCK_H -+ -+#include <linux/config.h> -+#include <linux/timer.h> -+#include <linux/cache.h> -+#include <linux/in.h> /* struct sockaddr_in */ -+ -+#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE) -+#include <linux/in6.h> /* struct sockaddr_in6 */ -+#include <linux/ipv6.h> /* dest_cache, inet6_options */ -+#include <linux/icmpv6.h> -+#include <net/if_inet6.h> /* struct ipv6_mc_socklist */ -+#endif -+ -+#if defined(CONFIG_INET) || defined (CONFIG_INET_MODULE) -+#include <linux/icmp.h> -+#endif -+#include <linux/tcp.h> /* struct tcphdr */ -+#if defined(CONFIG_IP_SCTP) || defined (CONFIG_IP_SCTP_MODULE) -+#include <net/sctp/structs.h> /* struct sctp_opt */ -+#endif -+ -+#include <linux/netdevice.h> -+#include <linux/skbuff.h> /* struct sk_buff */ -+#include <net/protocol.h> /* struct inet_protocol */ -+#if defined(CONFIG_X25) || defined(CONFIG_X25_MODULE) -+#include <net/x25.h> -+#endif -+#if defined(CONFIG_WAN_ROUTER) || defined(CONFIG_WAN_ROUTER_MODULE) -+#include <linux/if_wanpipe.h> -+#endif -+ -+#if defined(CONFIG_AX25) || defined(CONFIG_AX25_MODULE) -+#include <net/ax25.h> -+#if defined(CONFIG_NETROM) || defined(CONFIG_NETROM_MODULE) -+#include <net/netrom.h> -+#endif -+#if defined(CONFIG_ROSE) || defined(CONFIG_ROSE_MODULE) -+#include <net/rose.h> -+#endif -+#endif -+ -+#if defined(CONFIG_PPPOE) || defined(CONFIG_PPPOE_MODULE) -+#include <linux/if_pppox.h> -+#include <linux/ppp_channel.h> /* struct ppp_channel */ -+#endif -+ -+#if defined(CONFIG_IPX) || defined(CONFIG_IPX_MODULE) -+#if defined(CONFIG_SPX) || defined(CONFIG_SPX_MODULE) -+#include <net/spx.h> -+#else -+#include <net/ipx.h> -+#endif /* CONFIG_SPX */ -+#endif /* CONFIG_IPX */ -+ -+#if defined(CONFIG_ATALK) || defined(CONFIG_ATALK_MODULE) -+#include <linux/atalk.h> -+#endif -+ -+#if defined(CONFIG_DECNET) || defined(CONFIG_DECNET_MODULE) -+#include <net/dn.h> -+#endif -+ -+#if defined(CONFIG_IRDA) || defined(CONFIG_IRDA_MODULE) -+#include <net/irda/irda.h> -+#endif -+ -+#if defined(CONFIG_ATM) || defined(CONFIG_ATM_MODULE) -+struct atm_vcc; -+#endif -+ -+#ifdef CONFIG_FILTER -+#include <linux/filter.h> -+#endif -+ -+#include <asm/atomic.h> -+#include <net/dst.h> -+ -+ -+/* The AF_UNIX specific socket options */ -+struct unix_opt { -+ struct unix_address *addr; -+ struct dentry * dentry; -+ struct vfsmount * mnt; -+ struct semaphore readsem; -+ struct sock * other; -+ struct sock ** list; -+ struct sock * gc_tree; -+ atomic_t inflight; -+ rwlock_t lock; -+ wait_queue_head_t peer_wait; -+}; -+ -+ -+/* Once the IPX ncpd patches are in these are going into protinfo. */ -+#if defined(CONFIG_IPX) || defined(CONFIG_IPX_MODULE) -+struct ipx_opt { -+ ipx_address dest_addr; -+ ipx_interface *intrfc; -+ unsigned short port; -+#ifdef CONFIG_IPX_INTERN -+ unsigned char node[IPX_NODE_LEN]; -+#endif -+ unsigned short type; -+/* -+ * To handle special ncp connection-handling sockets for mars_nwe, -+ * the connection number must be stored in the socket. -+ */ -+ unsigned short ipx_ncp_conn; -+}; -+#endif -+ -+#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE) -+struct ipv6_pinfo { -+ struct in6_addr saddr; -+ struct in6_addr rcv_saddr; -+ struct in6_addr daddr; -+ struct in6_addr *daddr_cache; -+ -+ __u32 flow_label; -+ __u32 frag_size; -+ int hop_limit; -+ int mcast_hops; -+ int mcast_oif; -+ -+ /* pktoption flags */ -+ union { -+ struct { -+ __u8 srcrt:2, -+ rxinfo:1, -+ rxhlim:1, -+ hopopts:1, -+ dstopts:1, -+ authhdr:1, -+ rxflow:1; -+ } bits; -+ __u8 all; -+ } rxopt; -+ -+ /* sockopt flags */ -+ __u8 mc_loop:1, -+ recverr:1, -+ sndflow:1, -+ pmtudisc:2, -+ ipv6only:1; -+ -+ struct ipv6_mc_socklist *ipv6_mc_list; -+ struct ipv6_ac_socklist *ipv6_ac_list; -+ struct ipv6_fl_socklist *ipv6_fl_list; -+ __u32 dst_cookie; -+ -+ struct ipv6_txoptions *opt; -+ struct sk_buff *pktoptions; -+}; -+ -+struct raw6_opt { -+ __u32 checksum; /* perform checksum */ -+ __u32 offset; /* checksum offset */ -+ -+ struct icmp6_filter filter; -+}; -+ -+#define __ipv6_only_sock(sk) ((sk)->net_pinfo.af_inet6.ipv6only) -+#define ipv6_only_sock(sk) ((sk)->family == PF_INET6 && \ -+ (sk)->net_pinfo.af_inet6.ipv6only) -+#else -+#define __ipv6_only_sock(sk) 0 -+#define ipv6_only_sock(sk) 0 -+#endif /* IPV6 */ -+ -+#if defined(CONFIG_INET) || defined(CONFIG_INET_MODULE) -+struct raw_opt { -+ struct icmp_filter filter; -+}; -+#endif -+ -+#if defined(CONFIG_INET) || defined (CONFIG_INET_MODULE) -+struct inet_opt -+{ -+ int ttl; /* TTL setting */ -+ int tos; /* TOS */ -+ unsigned cmsg_flags; -+ struct ip_options *opt; -+ unsigned char hdrincl; /* Include headers ? */ -+ __u8 mc_ttl; /* Multicasting TTL */ -+ __u8 mc_loop; /* Loopback */ -+ unsigned recverr : 1, -+ freebind : 1; -+ __u16 id; /* ID counter for DF pkts */ -+ __u8 pmtudisc; -+ int mc_index; /* Multicast device index */ -+ __u32 mc_addr; -+ struct ip_mc_socklist *mc_list; /* Group array */ -+}; -+#endif -+ -+#if defined(CONFIG_PPPOE) || defined (CONFIG_PPPOE_MODULE) -+struct pppoe_opt -+{ -+ struct net_device *dev; /* device associated with socket*/ -+ struct pppoe_addr pa; /* what this socket is bound to*/ -+ struct sockaddr_pppox relay; /* what socket data will be -+ relayed to (PPPoE relaying) */ -+}; -+ -+struct pppox_opt -+{ -+ struct ppp_channel chan; -+ struct sock *sk; -+ struct pppox_opt *next; /* for hash table */ -+ union { -+ struct pppoe_opt pppoe; -+ } proto; -+}; -+#define pppoe_dev proto.pppoe.dev -+#define pppoe_pa proto.pppoe.pa -+#define pppoe_relay proto.pppoe.relay -+#endif -+ -+/* This defines a selective acknowledgement block. */ -+struct tcp_sack_block { -+ __u32 start_seq; -+ __u32 end_seq; -+}; -+ -+enum tcp_congestion_algo { -+ TCP_RENO=0, -+ TCP_VEGAS, -+ TCP_WESTWOOD, -+ TCP_BIC, -+}; -+ -+struct tcp_opt { -+ int tcp_header_len; /* Bytes of tcp header to send */ -+ -+/* -+ * Header prediction flags -+ * 0x5?10 << 16 + snd_wnd in net byte order -+ */ -+ __u32 pred_flags; -+ -+/* -+ * RFC793 variables by their proper names. This means you can -+ * read the code and the spec side by side (and laugh ...) -+ * See RFC793 and RFC1122. The RFC writes these in capitals. -+ */ -+ __u32 rcv_nxt; /* What we want to receive next */ -+ __u32 snd_nxt; /* Next sequence we send */ -+ -+ __u32 snd_una; /* First byte we want an ack for */ -+ __u32 snd_sml; /* Last byte of the most recently transmitted small packet */ -+ __u32 rcv_tstamp; /* timestamp of last received ACK (for keepalives) */ -+ __u32 lsndtime; /* timestamp of last sent data packet (for restart window) */ -+ -+ /* Delayed ACK control data */ -+ struct { -+ __u8 pending; /* ACK is pending */ -+ __u8 quick; /* Scheduled number of quick acks */ -+ __u8 pingpong; /* The session is interactive */ -+ __u8 blocked; /* Delayed ACK was blocked by socket lock*/ -+ __u32 ato; /* Predicted tick of soft clock */ -+ unsigned long timeout; /* Currently scheduled timeout */ -+ __u32 lrcvtime; /* timestamp of last received data packet*/ -+ __u16 last_seg_size; /* Size of last incoming segment */ -+ __u16 rcv_mss; /* MSS used for delayed ACK decisions */ -+ } ack; -+ -+ /* Data for direct copy to user */ -+ struct { -+ struct sk_buff_head prequeue; -+ struct task_struct *task; -+ struct iovec *iov; -+ int memory; -+ int len; -+ } ucopy; -+ -+ __u32 snd_wl1; /* Sequence for window update */ -+ __u32 snd_wnd; /* The window we expect to receive */ -+ __u32 max_window; /* Maximal window ever seen from peer */ -+ __u32 pmtu_cookie; /* Last pmtu seen by socket */ -+ __u16 mss_cache; /* Cached effective mss, not including SACKS */ -+ __u16 mss_clamp; /* Maximal mss, negotiated at connection setup */ -+ __u16 ext_header_len; /* Network protocol overhead (IP/IPv6 options) */ -+ __u8 ca_state; /* State of fast-retransmit machine */ -+ __u8 retransmits; /* Number of unrecovered RTO timeouts. */ -+ -+ __u8 reordering; /* Packet reordering metric. */ -+ __u8 queue_shrunk; /* Write queue has been shrunk recently.*/ -+ __u8 defer_accept; /* User waits for some data after accept() */ -+ -+/* RTT measurement */ -+ __u8 backoff; /* backoff */ -+ __u32 srtt; /* smothed round trip time << 3 */ -+ __u32 mdev; /* medium deviation */ -+ __u32 mdev_max; /* maximal mdev for the last rtt period */ -+ __u32 rttvar; /* smoothed mdev_max */ -+ __u32 rtt_seq; /* sequence number to update rttvar */ -+ __u32 rto; /* retransmit timeout */ -+ -+ __u32 packets_out; /* Packets which are "in flight" */ -+ __u32 left_out; /* Packets which leaved network */ -+ __u32 retrans_out; /* Retransmitted packets out */ -+ -+ -+/* -+ * Slow start and congestion control (see also Nagle, and Karn & Partridge) -+ */ -+ __u32 snd_ssthresh; /* Slow start size threshold */ -+ __u32 snd_cwnd; /* Sending congestion window */ -+ __u16 snd_cwnd_cnt; /* Linear increase counter */ -+ __u16 snd_cwnd_clamp; /* Do not allow snd_cwnd to grow above this */ -+ __u32 snd_cwnd_used; -+ __u32 snd_cwnd_stamp; -+ -+ /* Two commonly used timers in both sender and receiver paths. */ -+ unsigned long timeout; -+ struct timer_list retransmit_timer; /* Resend (no ack) */ -+ struct timer_list delack_timer; /* Ack delay */ -+ -+ struct sk_buff_head out_of_order_queue; /* Out of order segments go here */ -+ -+ struct tcp_func *af_specific; /* Operations which are AF_INET{4,6} specific */ -+ struct sk_buff *send_head; /* Front of stuff to transmit */ -+ struct page *sndmsg_page; /* Cached page for sendmsg */ -+ u32 sndmsg_off; /* Cached offset for sendmsg */ -+ -+ __u32 rcv_wnd; /* Current receiver window */ -+ __u32 rcv_wup; /* rcv_nxt on last window update sent */ -+ __u32 write_seq; /* Tail(+1) of data held in tcp send buffer */ -+ __u32 pushed_seq; /* Last pushed seq, required to talk to windows */ -+ __u32 copied_seq; /* Head of yet unread data */ -+/* -+ * Options received (usually on last packet, some only on SYN packets). -+ */ -+ char tstamp_ok, /* TIMESTAMP seen on SYN packet */ -+ wscale_ok, /* Wscale seen on SYN packet */ -+ sack_ok; /* SACK seen on SYN packet */ -+ char saw_tstamp; /* Saw TIMESTAMP on last packet */ -+ __u8 snd_wscale; /* Window scaling received from sender */ -+ __u8 rcv_wscale; /* Window scaling to send to receiver */ -+ __u8 nonagle; /* Disable Nagle algorithm? */ -+ __u8 keepalive_probes; /* num of allowed keep alive probes */ -+ -+/* PAWS/RTTM data */ -+ __u32 rcv_tsval; /* Time stamp value */ -+ __u32 rcv_tsecr; /* Time stamp echo reply */ -+ __u32 ts_recent; /* Time stamp to echo next */ -+ long ts_recent_stamp;/* Time we stored ts_recent (for aging) */ -+ -+/* SACKs data */ -+ __u16 user_mss; /* mss requested by user in ioctl */ -+ __u8 dsack; /* D-SACK is scheduled */ -+ __u8 eff_sacks; /* Size of SACK array to send with next packet */ -+ struct tcp_sack_block duplicate_sack[1]; /* D-SACK block */ -+ struct tcp_sack_block selective_acks[4]; /* The SACKS themselves*/ -+ -+ __u32 window_clamp; /* Maximal window to advertise */ -+ __u32 rcv_ssthresh; /* Current window clamp */ -+ __u8 probes_out; /* unanswered 0 window probes */ -+ __u8 num_sacks; /* Number of SACK blocks */ -+ __u16 advmss; /* Advertised MSS */ -+ -+ __u8 syn_retries; /* num of allowed syn retries */ -+ __u8 ecn_flags; /* ECN status bits. */ -+ __u16 prior_ssthresh; /* ssthresh saved at recovery start */ -+ __u32 lost_out; /* Lost packets */ -+ __u32 sacked_out; /* SACK'd packets */ -+ __u32 fackets_out; /* FACK'd packets */ -+ __u32 high_seq; /* snd_nxt at onset of congestion */ -+ -+ __u32 retrans_stamp; /* Timestamp of the last retransmit, -+ * also used in SYN-SENT to remember stamp of -+ * the first SYN. */ -+ __u32 undo_marker; /* tracking retrans started here. */ -+ int undo_retrans; /* number of undoable retransmissions. */ -+ __u32 urg_seq; /* Seq of received urgent pointer */ -+ __u16 urg_data; /* Saved octet of OOB data and control flags */ -+ __u8 pending; /* Scheduled timer event */ -+ __u8 urg_mode; /* In urgent mode */ -+ __u32 snd_up; /* Urgent pointer */ -+ -+ /* The syn_wait_lock is necessary only to avoid tcp_get_info having -+ * to grab the main lock sock while browsing the listening hash -+ * (otherwise it's deadlock prone). -+ * This lock is acquired in read mode only from tcp_get_info() and -+ * it's acquired in write mode _only_ from code that is actively -+ * changing the syn_wait_queue. All readers that are holding -+ * the master sock lock don't need to grab this lock in read mode -+ * too as the syn_wait_queue writes are always protected from -+ * the main sock lock. -+ */ -+ rwlock_t syn_wait_lock; -+ struct tcp_listen_opt *listen_opt; -+ -+ /* FIFO of established children */ -+ struct open_request *accept_queue; -+ struct open_request *accept_queue_tail; -+ -+ int write_pending; /* A write to socket waits to start. */ -+ -+ unsigned int keepalive_time; /* time before keep alive takes place */ -+ unsigned int keepalive_intvl; /* time interval between keep alive probes */ -+ int linger2; -+ -+ __u8 adv_cong; /* Using Vegas, Westwood, or BIC */ -+ __u8 frto_counter; /* Number of new acks after RTO */ -+ __u32 frto_highmark; /* snd_nxt when RTO occurred */ -+ -+ unsigned long last_synq_overflow; -+ -+/* Receiver side RTT estimation */ -+ struct { -+ __u32 rtt; -+ __u32 seq; -+ __u32 time; -+ } rcv_rtt_est; -+ -+/* Receiver queue space */ -+ struct { -+ int space; -+ __u32 seq; -+ __u32 time; -+ } rcvq_space; -+ -+/* TCP Westwood structure */ -+ struct { -+ __u32 bw_ns_est; /* first bandwidth estimation..not too smoothed 8) */ -+ __u32 bw_est; /* bandwidth estimate */ -+ __u32 rtt_win_sx; /* here starts a new evaluation... */ -+ __u32 bk; -+ __u32 snd_una; /* used for evaluating the number of acked bytes */ -+ __u32 cumul_ack; -+ __u32 accounted; -+ __u32 rtt; -+ __u32 rtt_min; /* minimum observed RTT */ -+ } westwood; -+ -+/* Vegas variables */ -+ struct { -+ __u32 beg_snd_nxt; /* right edge during last RTT */ -+ __u32 beg_snd_una; /* left edge during last RTT */ -+ __u32 beg_snd_cwnd; /* saves the size of the cwnd */ -+ __u8 doing_vegas_now;/* if true, do vegas for this RTT */ -+ __u16 cntRTT; /* # of RTTs measured within last RTT */ -+ __u32 minRTT; /* min of RTTs measured within last RTT (in usec) */ -+ __u32 baseRTT; /* the min of all Vegas RTT measurements seen (in usec) */ -+ } vegas; -+ -+ /* BI TCP Parameters */ -+ struct { -+ __u32 cnt; /* increase cwnd by 1 after this number of ACKs */ -+ __u32 last_max_cwnd; /* last maximium snd_cwnd */ -+ __u32 last_cwnd; /* the last snd_cwnd */ -+ __u32 last_stamp; /* time when updated last_cwnd */ -+ } bictcp; -+}; -+ -+ -+/* -+ * This structure really needs to be cleaned up. -+ * Most of it is for TCP, and not used by any of -+ * the other protocols. -+ */ -+ -+/* -+ * The idea is to start moving to a newer struct gradualy -+ * -+ * IMHO the newer struct should have the following format: -+ * -+ * struct sock { -+ * sockmem [mem, proto, callbacks] -+ * -+ * union or struct { -+ * ax25; -+ * } ll_pinfo; -+ * -+ * union { -+ * ipv4; -+ * ipv6; -+ * ipx; -+ * netrom; -+ * rose; -+ * x25; -+ * } net_pinfo; -+ * -+ * union { -+ * tcp; -+ * udp; -+ * spx; -+ * netrom; -+ * } tp_pinfo; -+ * -+ * } -+ * -+ * The idea failed because IPv6 transition asssumes dual IP/IPv6 sockets. -+ * So, net_pinfo is IPv6 are really, and protinfo unifies all another -+ * private areas. -+ */ -+ -+/* Define this to get the sk->debug debugging facility. */ -+#define SOCK_DEBUGGING -+#ifdef SOCK_DEBUGGING -+#define SOCK_DEBUG(sk, msg...) do { if((sk) && ((sk)->debug)) printk(KERN_DEBUG msg); } while (0) -+#else -+#define SOCK_DEBUG(sk, msg...) do { } while (0) -+#endif -+ -+/* This is the per-socket lock. The spinlock provides a synchronization -+ * between user contexts and software interrupt processing, whereas the -+ * mini-semaphore synchronizes multiple users amongst themselves. -+ */ -+typedef struct { -+ spinlock_t slock; -+ unsigned int users; -+ wait_queue_head_t wq; -+} socket_lock_t; -+ -+#define sock_lock_init(__sk) \ -+do { spin_lock_init(&((__sk)->lock.slock)); \ -+ (__sk)->lock.users = 0; \ -+ init_waitqueue_head(&((__sk)->lock.wq)); \ -+} while(0) -+ -+struct sock { -+ /* Socket demultiplex comparisons on incoming packets. */ -+ __u32 daddr; /* Foreign IPv4 addr */ -+ __u32 rcv_saddr; /* Bound local IPv4 addr */ -+ __u16 dport; /* Destination port */ -+ unsigned short num; /* Local port */ -+ int bound_dev_if; /* Bound device index if != 0 */ -+ -+ /* Main hash linkage for various protocol lookup tables. */ -+ struct sock *next; -+ struct sock **pprev; -+ struct sock *bind_next; -+ struct sock **bind_pprev; -+ -+ volatile unsigned char state, /* Connection state */ -+ zapped; /* In ax25 & ipx means not linked */ -+ __u16 sport; /* Source port */ -+ -+ unsigned short family; /* Address family */ -+ unsigned char reuse; /* SO_REUSEADDR setting */ -+ unsigned char shutdown; -+ atomic_t refcnt; /* Reference count */ -+ -+ socket_lock_t lock; /* Synchronizer... */ -+ int rcvbuf; /* Size of receive buffer in bytes */ -+ -+ wait_queue_head_t *sleep; /* Sock wait queue */ -+ struct dst_entry *dst_cache; /* Destination cache */ -+ rwlock_t dst_lock; -+ atomic_t rmem_alloc; /* Receive queue bytes committed */ -+ struct sk_buff_head receive_queue; /* Incoming packets */ -+ atomic_t wmem_alloc; /* Transmit queue bytes committed */ -+ struct sk_buff_head write_queue; /* Packet sending queue */ -+ atomic_t omem_alloc; /* "o" is "option" or "other" */ -+ int wmem_queued; /* Persistent queue size */ -+ int forward_alloc; /* Space allocated forward. */ -+ __u32 saddr; /* Sending source */ -+ unsigned int allocation; /* Allocation mode */ -+ int sndbuf; /* Size of send buffer in bytes */ -+ struct sock *prev; -+ -+ /* Not all are volatile, but some are, so we might as well say they all are. -+ * XXX Make this a flag word -DaveM -+ */ -+ volatile char dead, -+ done, -+ urginline, -+ keepopen, -+ linger, -+ destroy, -+ no_check, -+ broadcast, -+ bsdism; -+ unsigned char debug; -+ unsigned char rcvtstamp; -+ unsigned char use_write_queue; -+ unsigned char userlocks; -+ /* Hole of 3 bytes. Try to pack. */ -+ int route_caps; -+ int proc; -+ unsigned long lingertime; -+ -+ int hashent; -+ struct sock *pair; -+ -+ /* The backlog queue is special, it is always used with -+ * the per-socket spinlock held and requires low latency -+ * access. Therefore we special case it's implementation. -+ */ -+ struct { -+ struct sk_buff *head; -+ struct sk_buff *tail; -+ } backlog; -+ -+ rwlock_t callback_lock; -+ -+ /* Error queue, rarely used. */ -+ struct sk_buff_head error_queue; -+ -+ struct proto *prot; -+ -+#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE) -+ union { -+ struct ipv6_pinfo af_inet6; -+ } net_pinfo; -+#endif -+ -+ union { -+ struct tcp_opt af_tcp; -+#if defined(CONFIG_IP_SCTP) || defined (CONFIG_IP_SCTP_MODULE) -+ struct sctp_opt af_sctp; -+#endif -+#if defined(CONFIG_INET) || defined (CONFIG_INET_MODULE) -+ struct raw_opt tp_raw4; -+#endif -+#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE) -+ struct raw6_opt tp_raw; -+#endif /* CONFIG_IPV6 */ -+#if defined(CONFIG_SPX) || defined (CONFIG_SPX_MODULE) -+ struct spx_opt af_spx; -+#endif /* CONFIG_SPX */ -+ -+ } tp_pinfo; -+ -+ int err, err_soft; /* Soft holds errors that don't -+ cause failure but are the cause -+ of a persistent failure not just -+ 'timed out' */ -+ unsigned short ack_backlog; -+ unsigned short max_ack_backlog; -+ __u32 priority; -+ unsigned short type; -+ unsigned char localroute; /* Route locally only */ -+ unsigned char protocol; -+ struct ucred peercred; -+ int rcvlowat; -+ long rcvtimeo; -+ long sndtimeo; -+ -+#ifdef CONFIG_FILTER -+ /* Socket Filtering Instructions */ -+ struct sk_filter *filter; -+#endif /* CONFIG_FILTER */ -+ -+ /* This is where all the private (optional) areas that don't -+ * overlap will eventually live. -+ */ -+ union { -+ void *destruct_hook; -+ struct unix_opt af_unix; -+#if defined(CONFIG_INET) || defined (CONFIG_INET_MODULE) -+ struct inet_opt af_inet; -+#endif -+#if defined(CONFIG_ATALK) || defined(CONFIG_ATALK_MODULE) -+ struct atalk_sock af_at; -+#endif -+#if defined(CONFIG_IPX) || defined(CONFIG_IPX_MODULE) -+ struct ipx_opt af_ipx; -+#endif -+#if defined (CONFIG_DECNET) || defined(CONFIG_DECNET_MODULE) -+ struct dn_scp dn; -+#endif -+#if defined (CONFIG_PACKET) || defined(CONFIG_PACKET_MODULE) -+ struct packet_opt *af_packet; -+#endif -+#if defined(CONFIG_X25) || defined(CONFIG_X25_MODULE) -+ x25_cb *x25; -+#endif -+#if defined(CONFIG_AX25) || defined(CONFIG_AX25_MODULE) -+ ax25_cb *ax25; -+#endif -+#if defined(CONFIG_NETROM) || defined(CONFIG_NETROM_MODULE) -+ nr_cb *nr; -+#endif -+#if defined(CONFIG_ROSE) || defined(CONFIG_ROSE_MODULE) -+ rose_cb *rose; -+#endif -+#if defined(CONFIG_PPPOE) || defined(CONFIG_PPPOE_MODULE) -+ struct pppox_opt *pppox; -+#endif -+ struct netlink_opt *af_netlink; -+#if defined(CONFIG_ECONET) || defined(CONFIG_ECONET_MODULE) -+ struct econet_opt *af_econet; -+#endif -+#if defined(CONFIG_ATM) || defined(CONFIG_ATM_MODULE) -+ struct atm_vcc *af_atm; -+#endif -+#if defined(CONFIG_IRDA) || defined(CONFIG_IRDA_MODULE) -+ struct irda_sock *irda; -+#endif -+#if defined(CONFIG_WAN_ROUTER) || defined(CONFIG_WAN_ROUTER_MODULE) -+ struct wanpipe_opt *af_wanpipe; -+#endif -+ } protinfo; -+ -+ -+ /* This part is used for the timeout functions. */ -+ struct timer_list timer; /* This is the sock cleanup timer. */ -+ struct timeval stamp; -+ -+ /* Identd and reporting IO signals */ -+ struct socket *socket; -+ -+ /* RPC layer private data */ -+ void *user_data; -+ -+ /* Callbacks */ -+ void (*state_change)(struct sock *sk); -+ void (*data_ready)(struct sock *sk,int bytes); -+ void (*write_space)(struct sock *sk); -+ void (*error_report)(struct sock *sk); -+ -+ int (*backlog_rcv) (struct sock *sk, -+ struct sk_buff *skb); -+ void (*destruct)(struct sock *sk); -+}; -+ -+/* The per-socket spinlock must be held here. */ -+#define sk_add_backlog(__sk, __skb) \ -+do { if((__sk)->backlog.tail == NULL) { \ -+ (__sk)->backlog.head = \ -+ (__sk)->backlog.tail = (__skb); \ -+ } else { \ -+ ((__sk)->backlog.tail)->next = (__skb); \ -+ (__sk)->backlog.tail = (__skb); \ -+ } \ -+ (__skb)->next = NULL; \ -+} while(0) -+ -+/* IP protocol blocks we attach to sockets. -+ * socket layer -> transport layer interface -+ * transport -> network interface is defined by struct inet_proto -+ */ -+struct proto { -+ void (*close)(struct sock *sk, -+ long timeout); -+ int (*connect)(struct sock *sk, -+ struct sockaddr *uaddr, -+ int addr_len); -+ int (*disconnect)(struct sock *sk, int flags); -+ -+ struct sock * (*accept) (struct sock *sk, int flags, int *err); -+ -+ int (*ioctl)(struct sock *sk, int cmd, -+ unsigned long arg); -+ int (*init)(struct sock *sk); -+ int (*destroy)(struct sock *sk); -+ void (*shutdown)(struct sock *sk, int how); -+ int (*setsockopt)(struct sock *sk, int level, -+ int optname, char *optval, int optlen); -+ int (*getsockopt)(struct sock *sk, int level, -+ int optname, char *optval, -+ int *option); -+ int (*sendmsg)(struct sock *sk, struct msghdr *msg, -+ int len); -+ int (*recvmsg)(struct sock *sk, struct msghdr *msg, -+ int len, int noblock, int flags, -+ int *addr_len); -+ int (*bind)(struct sock *sk, -+ struct sockaddr *uaddr, int addr_len); -+ -+ int (*backlog_rcv) (struct sock *sk, -+ struct sk_buff *skb); -+ -+ /* Keeping track of sk's, looking them up, and port selection methods. */ -+ void (*hash)(struct sock *sk); -+ void (*unhash)(struct sock *sk); -+ int (*get_port)(struct sock *sk, unsigned short snum); -+ -+ char name[32]; -+ -+ struct { -+ int inuse; -+ u8 __pad[SMP_CACHE_BYTES - sizeof(int)]; -+ } stats[NR_CPUS]; -+}; -+ -+/* Called with local bh disabled */ -+static __inline__ void sock_prot_inc_use(struct proto *prot) -+{ -+ prot->stats[smp_processor_id()].inuse++; -+} -+ -+static __inline__ void sock_prot_dec_use(struct proto *prot) -+{ -+ prot->stats[smp_processor_id()].inuse--; -+} -+ -+/* About 10 seconds */ -+#define SOCK_DESTROY_TIME (10*HZ) -+ -+/* Sockets 0-1023 can't be bound to unless you are superuser */ -+#define PROT_SOCK 1024 -+ -+#define SHUTDOWN_MASK 3 -+#define RCV_SHUTDOWN 1 -+#define SEND_SHUTDOWN 2 -+ -+#define SOCK_SNDBUF_LOCK 1 -+#define SOCK_RCVBUF_LOCK 2 -+#define SOCK_BINDADDR_LOCK 4 -+#define SOCK_BINDPORT_LOCK 8 -+ -+ -+/* Used by processes to "lock" a socket state, so that -+ * interrupts and bottom half handlers won't change it -+ * from under us. It essentially blocks any incoming -+ * packets, so that we won't get any new data or any -+ * packets that change the state of the socket. -+ * -+ * While locked, BH processing will add new packets to -+ * the backlog queue. This queue is processed by the -+ * owner of the socket lock right before it is released. -+ * -+ * Since ~2.3.5 it is also exclusive sleep lock serializing -+ * accesses from user process context. -+ */ -+extern void __lock_sock(struct sock *sk); -+extern void __release_sock(struct sock *sk); -+#define lock_sock(__sk) \ -+do { spin_lock_bh(&((__sk)->lock.slock)); \ -+ if ((__sk)->lock.users != 0) \ -+ __lock_sock(__sk); \ -+ (__sk)->lock.users = 1; \ -+ spin_unlock_bh(&((__sk)->lock.slock)); \ -+} while(0) -+ -+#define release_sock(__sk) \ -+do { spin_lock_bh(&((__sk)->lock.slock)); \ -+ if ((__sk)->backlog.tail != NULL) \ -+ __release_sock(__sk); \ -+ (__sk)->lock.users = 0; \ -+ if (waitqueue_active(&((__sk)->lock.wq))) wake_up(&((__sk)->lock.wq)); \ -+ spin_unlock_bh(&((__sk)->lock.slock)); \ -+} while(0) -+ -+/* BH context may only use the following locking interface. */ -+#define bh_lock_sock(__sk) spin_lock(&((__sk)->lock.slock)) -+#define bh_unlock_sock(__sk) spin_unlock(&((__sk)->lock.slock)) -+ -+extern struct sock * sk_alloc(int family, int priority, int zero_it); -+extern void sk_free(struct sock *sk); -+ -+extern struct sk_buff *sock_wmalloc(struct sock *sk, -+ unsigned long size, int force, -+ int priority); -+extern struct sk_buff *sock_rmalloc(struct sock *sk, -+ unsigned long size, int force, -+ int priority); -+extern void sock_wfree(struct sk_buff *skb); -+extern void sock_rfree(struct sk_buff *skb); -+ -+extern int sock_setsockopt(struct socket *sock, int level, -+ int op, char *optval, -+ int optlen); -+ -+extern int sock_getsockopt(struct socket *sock, int level, -+ int op, char *optval, -+ int *optlen); -+extern struct sk_buff *sock_alloc_send_skb(struct sock *sk, -+ unsigned long size, -+ int noblock, -+ int *errcode); -+extern struct sk_buff *sock_alloc_send_pskb(struct sock *sk, -+ unsigned long header_len, -+ unsigned long data_len, -+ int noblock, -+ int *errcode); -+extern void *sock_kmalloc(struct sock *sk, int size, int priority); -+extern void sock_kfree_s(struct sock *sk, void *mem, int size); -+ -+/* -+ * Functions to fill in entries in struct proto_ops when a protocol -+ * does not implement a particular function. -+ */ -+extern int sock_no_release(struct socket *); -+extern int sock_no_bind(struct socket *, -+ struct sockaddr *, int); -+extern int sock_no_connect(struct socket *, -+ struct sockaddr *, int, int); -+extern int sock_no_socketpair(struct socket *, -+ struct socket *); -+extern int sock_no_accept(struct socket *, -+ struct socket *, int); -+extern int sock_no_getname(struct socket *, -+ struct sockaddr *, int *, int); -+extern unsigned int sock_no_poll(struct file *, struct socket *, -+ struct poll_table_struct *); -+extern int sock_no_ioctl(struct socket *, unsigned int, -+ unsigned long); -+extern int sock_no_listen(struct socket *, int); -+extern int sock_no_shutdown(struct socket *, int); -+extern int sock_no_getsockopt(struct socket *, int , int, -+ char *, int *); -+extern int sock_no_setsockopt(struct socket *, int, int, -+ char *, int); -+extern int sock_no_fcntl(struct socket *, -+ unsigned int, unsigned long); -+extern int sock_no_sendmsg(struct socket *, -+ struct msghdr *, int, -+ struct scm_cookie *); -+extern int sock_no_recvmsg(struct socket *, -+ struct msghdr *, int, int, -+ struct scm_cookie *); -+extern int sock_no_mmap(struct file *file, -+ struct socket *sock, -+ struct vm_area_struct *vma); -+extern ssize_t sock_no_sendpage(struct socket *sock, -+ struct page *page, -+ int offset, size_t size, -+ int flags); -+ -+/* -+ * Default socket callbacks and setup code -+ */ -+ -+extern void sock_def_destruct(struct sock *); -+ -+/* Initialise core socket variables */ -+extern void sock_init_data(struct socket *sock, struct sock *sk); -+ -+extern void sklist_remove_socket(struct sock **list, struct sock *sk); -+extern void sklist_insert_socket(struct sock **list, struct sock *sk); -+extern void sklist_destroy_socket(struct sock **list, struct sock *sk); -+ -+#ifdef CONFIG_FILTER -+ -+/** -+ * sk_filter - run a packet through a socket filter -+ * @sk: sock associated with &sk_buff -+ * @skb: buffer to filter -+ * @needlock: set to 1 if the sock is not locked by caller. -+ * -+ * Run the filter code and then cut skb->data to correct size returned by -+ * sk_run_filter. If pkt_len is 0 we toss packet. If skb->len is smaller -+ * than pkt_len we keep whole skb->data. This is the socket level -+ * wrapper to sk_run_filter. It returns 0 if the packet should -+ * be accepted or -EPERM if the packet should be tossed. -+ */ -+ -+static inline int sk_filter(struct sock *sk, struct sk_buff *skb, int needlock) -+{ -+ int err = 0; -+ -+ if (sk->filter) { -+ struct sk_filter *filter; -+ -+ if (needlock) -+ bh_lock_sock(sk); -+ -+ filter = sk->filter; -+ if (filter) { -+ int pkt_len = sk_run_filter(skb, filter->insns, -+ filter->len); -+ if (!pkt_len) -+ err = -EPERM; -+ else -+ skb_trim(skb, pkt_len); -+ } -+ -+ if (needlock) -+ bh_unlock_sock(sk); -+ } -+ return err; -+} -+ -+/** -+ * sk_filter_release: Release a socket filter -+ * @sk: socket -+ * @fp: filter to remove -+ * -+ * Remove a filter from a socket and release its resources. -+ */ -+ -+static inline void sk_filter_release(struct sock *sk, struct sk_filter *fp) -+{ -+ unsigned int size = sk_filter_len(fp); -+ -+ atomic_sub(size, &sk->omem_alloc); -+ -+ if (atomic_dec_and_test(&fp->refcnt)) -+ kfree(fp); -+} -+ -+static inline void sk_filter_charge(struct sock *sk, struct sk_filter *fp) -+{ -+ atomic_inc(&fp->refcnt); -+ atomic_add(sk_filter_len(fp), &sk->omem_alloc); -+} -+ -+#else -+ -+static inline int sk_filter(struct sock *sk, struct sk_buff *skb, int needlock) -+{ -+ return 0; -+} -+ -+#endif /* CONFIG_FILTER */ -+ -+/* -+ * Socket reference counting postulates. -+ * -+ * * Each user of socket SHOULD hold a reference count. -+ * * Each access point to socket (an hash table bucket, reference from a list, -+ * running timer, skb in flight MUST hold a reference count. -+ * * When reference count hits 0, it means it will never increase back. -+ * * When reference count hits 0, it means that no references from -+ * outside exist to this socket and current process on current CPU -+ * is last user and may/should destroy this socket. -+ * * sk_free is called from any context: process, BH, IRQ. When -+ * it is called, socket has no references from outside -> sk_free -+ * may release descendant resources allocated by the socket, but -+ * to the time when it is called, socket is NOT referenced by any -+ * hash tables, lists etc. -+ * * Packets, delivered from outside (from network or from another process) -+ * and enqueued on receive/error queues SHOULD NOT grab reference count, -+ * when they sit in queue. Otherwise, packets will leak to hole, when -+ * socket is looked up by one cpu and unhasing is made by another CPU. -+ * It is true for udp/raw, netlink (leak to receive and error queues), tcp -+ * (leak to backlog). Packet socket does all the processing inside -+ * BR_NETPROTO_LOCK, so that it has not this race condition. UNIX sockets -+ * use separate SMP lock, so that they are prone too. -+ */ -+ -+/* Grab socket reference count. This operation is valid only -+ when sk is ALREADY grabbed f.e. it is found in hash table -+ or a list and the lookup is made under lock preventing hash table -+ modifications. -+ */ -+ -+static inline void sock_hold(struct sock *sk) -+{ -+ atomic_inc(&sk->refcnt); -+} -+ -+/* Ungrab socket in the context, which assumes that socket refcnt -+ cannot hit zero, f.e. it is true in context of any socketcall. -+ */ -+static inline void __sock_put(struct sock *sk) -+{ -+ atomic_dec(&sk->refcnt); -+} -+ -+/* Ungrab socket and destroy it, if it was the last reference. */ -+static inline void sock_put(struct sock *sk) -+{ -+ if (atomic_dec_and_test(&sk->refcnt)) -+ sk_free(sk); -+} -+ -+/* Detach socket from process context. -+ * Announce socket dead, detach it from wait queue and inode. -+ * Note that parent inode held reference count on this struct sock, -+ * we do not release it in this function, because protocol -+ * probably wants some additional cleanups or even continuing -+ * to work with this socket (TCP). -+ */ -+static inline void sock_orphan(struct sock *sk) -+{ -+ write_lock_bh(&sk->callback_lock); -+ sk->dead = 1; -+ sk->socket = NULL; -+ sk->sleep = NULL; -+ write_unlock_bh(&sk->callback_lock); -+} -+ -+static inline void sock_graft(struct sock *sk, struct socket *parent) -+{ -+ write_lock_bh(&sk->callback_lock); -+ sk->sleep = &parent->wait; -+ parent->sk = sk; -+ sk->socket = parent; -+ write_unlock_bh(&sk->callback_lock); -+} -+ -+static inline int sock_i_uid(struct sock *sk) -+{ -+ int uid; -+ -+ read_lock(&sk->callback_lock); -+ uid = sk->socket ? sk->socket->inode->i_uid : 0; -+ read_unlock(&sk->callback_lock); -+ return uid; -+} -+ -+static inline unsigned long sock_i_ino(struct sock *sk) -+{ -+ unsigned long ino; -+ -+ read_lock(&sk->callback_lock); -+ ino = sk->socket ? sk->socket->inode->i_ino : 0; -+ read_unlock(&sk->callback_lock); -+ return ino; -+} -+ -+static inline struct dst_entry * -+__sk_dst_get(struct sock *sk) -+{ -+ return sk->dst_cache; -+} -+ -+static inline struct dst_entry * -+sk_dst_get(struct sock *sk) -+{ -+ struct dst_entry *dst; -+ -+ read_lock(&sk->dst_lock); -+ dst = sk->dst_cache; -+ if (dst) -+ dst_hold(dst); -+ read_unlock(&sk->dst_lock); -+ return dst; -+} -+ -+static inline void -+__sk_dst_set(struct sock *sk, struct dst_entry *dst) -+{ -+ struct dst_entry *old_dst; -+ -+ old_dst = sk->dst_cache; -+ sk->dst_cache = dst; -+ dst_release(old_dst); -+} -+ -+static inline void -+sk_dst_set(struct sock *sk, struct dst_entry *dst) -+{ -+ write_lock(&sk->dst_lock); -+ __sk_dst_set(sk, dst); -+ write_unlock(&sk->dst_lock); -+} -+ -+static inline void -+__sk_dst_reset(struct sock *sk) -+{ -+ struct dst_entry *old_dst; -+ -+ old_dst = sk->dst_cache; -+ sk->dst_cache = NULL; -+ dst_release(old_dst); -+} -+ -+static inline void -+sk_dst_reset(struct sock *sk) -+{ -+ write_lock(&sk->dst_lock); -+ __sk_dst_reset(sk); -+ write_unlock(&sk->dst_lock); -+} -+ -+static inline struct dst_entry * -+__sk_dst_check(struct sock *sk, u32 cookie) -+{ -+ struct dst_entry *dst = sk->dst_cache; -+ -+ if (dst && dst->obsolete && dst->ops->check(dst, cookie) == NULL) { -+ sk->dst_cache = NULL; -+ return NULL; -+ } -+ -+ return dst; -+} -+ -+static inline struct dst_entry * -+sk_dst_check(struct sock *sk, u32 cookie) -+{ -+ struct dst_entry *dst = sk_dst_get(sk); -+ -+ if (dst && dst->obsolete && dst->ops->check(dst, cookie) == NULL) { -+ sk_dst_reset(sk); -+ return NULL; -+ } -+ -+ return dst; -+} -+ -+ -+/* -+ * Queue a received datagram if it will fit. Stream and sequenced -+ * protocols can't normally use this as they need to fit buffers in -+ * and play with them. -+ * -+ * Inlined as it's very short and called for pretty much every -+ * packet ever received. -+ */ -+ -+static inline void skb_set_owner_w(struct sk_buff *skb, struct sock *sk) -+{ -+ sock_hold(sk); -+ skb->sk = sk; -+ skb->destructor = sock_wfree; -+ atomic_add(skb->truesize, &sk->wmem_alloc); -+} -+ -+static inline void skb_set_owner_r(struct sk_buff *skb, struct sock *sk) -+{ -+ skb->sk = sk; -+ skb->destructor = sock_rfree; -+ atomic_add(skb->truesize, &sk->rmem_alloc); -+} -+ -+static inline int sock_queue_rcv_skb(struct sock *sk, struct sk_buff *skb) -+{ -+ int err = 0; -+ int skb_len; -+ -+ /* Cast skb->rcvbuf to unsigned... It's pointless, but reduces -+ number of warnings when compiling with -W --ANK -+ */ -+ if (atomic_read(&sk->rmem_alloc) + skb->truesize >= (unsigned)sk->rcvbuf) { -+ err = -ENOMEM; -+ goto out; -+ } -+ -+ /* It would be deadlock, if sock_queue_rcv_skb is used -+ with socket lock! We assume that users of this -+ function are lock free. -+ */ -+ err = sk_filter(sk, skb, 1); -+ if (err) -+ goto out; -+ -+ skb->dev = NULL; -+ skb_set_owner_r(skb, sk); -+ -+ /* Cache the SKB length before we tack it onto the receive -+ * queue. Once it is added it no longer belongs to us and -+ * may be freed by other threads of control pulling packets -+ * from the queue. -+ */ -+ skb_len = skb->len; -+ -+ skb_queue_tail(&sk->receive_queue, skb); -+ if (!sk->dead) -+ sk->data_ready(sk,skb_len); -+out: -+ return err; -+} -+ -+static inline int sock_queue_err_skb(struct sock *sk, struct sk_buff *skb) -+{ -+ /* Cast skb->rcvbuf to unsigned... It's pointless, but reduces -+ number of warnings when compiling with -W --ANK -+ */ -+ if (atomic_read(&sk->rmem_alloc) + skb->truesize >= (unsigned)sk->rcvbuf) -+ return -ENOMEM; -+ skb_set_owner_r(skb, sk); -+ skb_queue_tail(&sk->error_queue,skb); -+ if (!sk->dead) -+ sk->data_ready(sk,skb->len); -+ return 0; -+} -+ -+/* -+ * Recover an error report and clear atomically -+ */ -+ -+static inline int sock_error(struct sock *sk) -+{ -+ int err=xchg(&sk->err,0); -+ return -err; -+} -+ -+static inline unsigned long sock_wspace(struct sock *sk) -+{ -+ int amt = 0; -+ -+ if (!(sk->shutdown & SEND_SHUTDOWN)) { -+ amt = sk->sndbuf - atomic_read(&sk->wmem_alloc); -+ if (amt < 0) -+ amt = 0; -+ } -+ return amt; -+} -+ -+static inline void sk_wake_async(struct sock *sk, int how, int band) -+{ -+ if (sk->socket && sk->socket->fasync_list) -+ sock_wake_async(sk->socket, how, band); -+} -+ -+#define SOCK_MIN_SNDBUF 2048 -+#define SOCK_MIN_RCVBUF 256 -+ -+/* -+ * Default write policy as shown to user space via poll/select/SIGIO -+ */ -+static inline int sock_writeable(struct sock *sk) -+{ -+ return atomic_read(&sk->wmem_alloc) < (sk->sndbuf / 2); -+} -+ -+static inline int gfp_any(void) -+{ -+ return in_softirq() ? GFP_ATOMIC : GFP_KERNEL; -+} -+ -+static inline long sock_rcvtimeo(struct sock *sk, int noblock) -+{ -+ return noblock ? 0 : sk->rcvtimeo; -+} -+ -+static inline long sock_sndtimeo(struct sock *sk, int noblock) -+{ -+ return noblock ? 0 : sk->sndtimeo; -+} -+ -+static inline int sock_rcvlowat(struct sock *sk, int waitall, int len) -+{ -+ return (waitall ? len : min_t(int, sk->rcvlowat, len)) ? : 1; -+} -+ -+/* Alas, with timeout socket operations are not restartable. -+ * Compare this to poll(). -+ */ -+static inline int sock_intr_errno(long timeo) -+{ -+ return timeo == MAX_SCHEDULE_TIMEOUT ? -ERESTARTSYS : -EINTR; -+} -+ -+static __inline__ void -+sock_recv_timestamp(struct msghdr *msg, struct sock *sk, struct sk_buff *skb) -+{ -+ if (sk->rcvtstamp) -+ put_cmsg(msg, SOL_SOCKET, SO_TIMESTAMP, sizeof(skb->stamp), &skb->stamp); -+ else -+ sk->stamp = skb->stamp; -+} -+ -+/* -+ * Enable debug/info messages -+ */ -+ -+#if 0 -+#define NETDEBUG(x) do { } while (0) -+#else -+#define NETDEBUG(x) do { x; } while (0) -+#endif -+ -+/* -+ * Macros for sleeping on a socket. Use them like this: -+ * -+ * SOCK_SLEEP_PRE(sk) -+ * if (condition) -+ * schedule(); -+ * SOCK_SLEEP_POST(sk) -+ * -+ */ -+ -+#define SOCK_SLEEP_PRE(sk) { struct task_struct *tsk = current; \ -+ DECLARE_WAITQUEUE(wait, tsk); \ -+ tsk->state = TASK_INTERRUPTIBLE; \ -+ add_wait_queue((sk)->sleep, &wait); \ -+ release_sock(sk); -+ -+#define SOCK_SLEEP_POST(sk) tsk->state = TASK_RUNNING; \ -+ remove_wait_queue((sk)->sleep, &wait); \ -+ lock_sock(sk); \ -+ } -+ -+extern __u32 sysctl_wmem_max; -+extern __u32 sysctl_rmem_max; -+ -+#endif /* _SOCK_H */ -diff --unified --recursive --new-file linux-2.4.30/net/Config.in linux-2.4.30-1-686-smp-ring3/net/Config.in ---- linux-2.4.30/net/Config.in 2005-01-19 15:10:13.000000000 +0100 -+++ linux-2.4.30-1-686-smp-ring3/net/Config.in 2005-10-22 23:08:28.028051250 +0200 -@@ -15,6 +15,9 @@ - bool ' Network packet filtering debugging' CONFIG_NETFILTER_DEBUG - fi - bool 'Socket Filtering' CONFIG_FILTER -+if [ "$CONFIG_EXPERIMENTAL" = "y" -a "$CONFIG_FILTER" = "y" ]; then -+ source net/ring/Config.in -+fi - tristate 'Unix domain sockets' CONFIG_UNIX - bool 'TCP/IP networking' CONFIG_INET - if [ "$CONFIG_INET" = "y" ]; then -diff --unified --recursive --new-file linux-2.4.30/net/Config.in.ORG linux-2.4.30-1-686-smp-ring3/net/Config.in.ORG ---- linux-2.4.30/net/Config.in.ORG 1970-01-01 01:00:00.000000000 +0100 -+++ linux-2.4.30-1-686-smp-ring3/net/Config.in.ORG 2005-10-22 23:08:28.020050750 +0200 -@@ -0,0 +1,107 @@ -+# -+# Network configuration -+# -+mainmenu_option next_comment -+comment 'Networking options' -+tristate 'Packet socket' CONFIG_PACKET -+if [ "$CONFIG_PACKET" != "n" ]; then -+ bool ' Packet socket: mmapped IO' CONFIG_PACKET_MMAP -+fi -+ -+tristate 'Netlink device emulation' CONFIG_NETLINK_DEV -+ -+bool 'Network packet filtering (replaces ipchains)' CONFIG_NETFILTER -+if [ "$CONFIG_NETFILTER" = "y" ]; then -+ bool ' Network packet filtering debugging' CONFIG_NETFILTER_DEBUG -+fi -+bool 'Socket Filtering' CONFIG_FILTER -+tristate 'Unix domain sockets' CONFIG_UNIX -+bool 'TCP/IP networking' CONFIG_INET -+if [ "$CONFIG_INET" = "y" ]; then -+ source net/ipv4/Config.in -+ if [ "$CONFIG_EXPERIMENTAL" = "y" ]; then -+# IPv6 as module will cause a CRASH if you try to unload it -+ tristate ' The IPv6 protocol (EXPERIMENTAL)' CONFIG_IPV6 -+ if [ "$CONFIG_IPV6" != "n" ]; then -+ source net/ipv6/Config.in -+ fi -+ fi -+ if [ "$CONFIG_EXPERIMENTAL" = "y" ]; then -+ source net/khttpd/Config.in -+ fi -+ if [ "$CONFIG_EXPERIMENTAL" = "y" ]; then -+ source net/sctp/Config.in -+ fi -+fi -+if [ "$CONFIG_EXPERIMENTAL" = "y" ]; then -+ tristate 'Asynchronous Transfer Mode (ATM) (EXPERIMENTAL)' CONFIG_ATM -+ if [ "$CONFIG_ATM" = "y" -o "$CONFIG_ATM" = "m" ]; then -+ if [ "$CONFIG_INET" = "y" ]; then -+ dep_tristate ' Classical IP over ATM' CONFIG_ATM_CLIP $CONFIG_ATM -+ if [ "$CONFIG_ATM_CLIP" != "n" ]; then -+ bool ' Do NOT send ICMP if no neighbour' CONFIG_ATM_CLIP_NO_ICMP -+ fi -+ fi -+ dep_tristate ' LAN Emulation (LANE) support' CONFIG_ATM_LANE $CONFIG_ATM -+ if [ "$CONFIG_INET" = "y" -a "$CONFIG_ATM_LANE" != "n" ]; then -+ tristate ' Multi-Protocol Over ATM (MPOA) support' CONFIG_ATM_MPOA -+ fi -+ dep_tristate ' RFC1483/2684 Bridged protocols' CONFIG_ATM_BR2684 $CONFIG_ATM -+ if [ "$CONFIG_ATM_BR2684" != "n" ]; then -+ bool ' Per-VC IP filter kludge' CONFIG_ATM_BR2684_IPFILTER -+ fi -+ fi -+fi -+tristate '802.1Q VLAN Support' CONFIG_VLAN_8021Q -+ -+comment ' ' -+tristate 'The IPX protocol' CONFIG_IPX -+if [ "$CONFIG_IPX" != "n" ]; then -+ source net/ipx/Config.in -+fi -+ -+tristate 'Appletalk protocol support' CONFIG_ATALK -+if [ "$CONFIG_ATALK" != "n" ]; then -+ source drivers/net/appletalk/Config.in -+fi -+ -+tristate 'DECnet Support' CONFIG_DECNET -+if [ "$CONFIG_DECNET" != "n" ]; then -+ source net/decnet/Config.in -+fi -+dep_tristate '802.1d Ethernet Bridging' CONFIG_BRIDGE $CONFIG_INET -+if [ "$CONFIG_EXPERIMENTAL" = "y" ]; then -+ tristate 'CCITT X.25 Packet Layer (EXPERIMENTAL)' CONFIG_X25 -+ tristate 'LAPB Data Link Driver (EXPERIMENTAL)' CONFIG_LAPB -+ bool '802.2 LLC (EXPERIMENTAL)' CONFIG_LLC -+ bool 'Frame Diverter (EXPERIMENTAL)' CONFIG_NET_DIVERT -+# if [ "$CONFIG_LLC" = "y" ]; then -+# bool ' Netbeui (EXPERIMENTAL)' CONFIG_NETBEUI -+# fi -+ if [ "$CONFIG_INET" = "y" ]; then -+ tristate 'Acorn Econet/AUN protocols (EXPERIMENTAL)' CONFIG_ECONET -+ if [ "$CONFIG_ECONET" != "n" ]; then -+ bool ' AUN over UDP' CONFIG_ECONET_AUNUDP -+ bool ' Native Econet' CONFIG_ECONET_NATIVE -+ fi -+ fi -+ tristate 'WAN router' CONFIG_WAN_ROUTER -+ bool 'Fast switching (read help!)' CONFIG_NET_FASTROUTE -+ bool 'Forwarding between high speed interfaces' CONFIG_NET_HW_FLOWCONTROL -+fi -+ -+mainmenu_option next_comment -+comment 'QoS and/or fair queueing' -+bool 'QoS and/or fair queueing' CONFIG_NET_SCHED -+if [ "$CONFIG_NET_SCHED" = "y" ]; then -+ source net/sched/Config.in -+fi -+#bool 'Network code profiler' CONFIG_NET_PROFILE -+endmenu -+ -+mainmenu_option next_comment -+comment 'Network testing' -+dep_tristate 'Packet Generator (USE WITH CAUTION)' CONFIG_NET_PKTGEN $CONFIG_PROC_FS -+endmenu -+ -+endmenu -diff --unified --recursive --new-file linux-2.4.30/net/Makefile linux-2.4.30-1-686-smp-ring3/net/Makefile ---- linux-2.4.30/net/Makefile 2004-08-08 01:26:06.000000000 +0200 -+++ linux-2.4.30-1-686-smp-ring3/net/Makefile 2005-10-22 23:08:27.928045000 +0200 -@@ -7,7 +7,7 @@ - - O_TARGET := network.o - --mod-subdirs := ipv4/netfilter ipv6/netfilter ipx irda bluetooth atm netlink sched core sctp 802 -+mod-subdirs := ipv4/netfilter ipv6/netfilter ipx irda bluetooth atm netlink sched core sctp 802 ring - export-objs := netsyms.o - - subdir-y := core ethernet -@@ -46,6 +46,7 @@ - subdir-$(CONFIG_DECNET) += decnet - subdir-$(CONFIG_ECONET) += econet - subdir-$(CONFIG_VLAN_8021Q) += 8021q -+subdir-$(CONFIG_RING) += ring - - ifeq ($(CONFIG_NETFILTER),y) - mod-subdirs += ipv4/ipvs -diff --unified --recursive --new-file linux-2.4.30/net/Makefile.ORG linux-2.4.30-1-686-smp-ring3/net/Makefile.ORG ---- linux-2.4.30/net/Makefile.ORG 1970-01-01 01:00:00.000000000 +0100 -+++ linux-2.4.30-1-686-smp-ring3/net/Makefile.ORG 2005-10-22 23:08:27.916044250 +0200 -@@ -0,0 +1,61 @@ -+# -+# Makefile for the linux networking. -+# -+# 2 Sep 2000, Christoph Hellwig <hch@infradead.org> -+# Rewritten to use lists instead of if-statements. -+# -+ -+O_TARGET := network.o -+ -+mod-subdirs := ipv4/netfilter ipv6/netfilter ipx irda bluetooth atm netlink sched core sctp 802 -+export-objs := netsyms.o -+ -+subdir-y := core ethernet -+subdir-m := ipv4 # hum? -+ -+ -+subdir-$(CONFIG_NET) += 802 sched netlink -+subdir-$(CONFIG_IPV6) += ipv6 -+subdir-$(CONFIG_INET) += ipv4 -+subdir-$(CONFIG_NETFILTER) += ipv4/netfilter -+subdir-$(CONFIG_UNIX) += unix -+subdir-$(CONFIG_IP_SCTP) += sctp -+ -+ifneq ($(CONFIG_IPV6),n) -+ifneq ($(CONFIG_IPV6),) -+subdir-$(CONFIG_NETFILTER) += ipv6/netfilter -+endif -+endif -+ -+subdir-$(CONFIG_KHTTPD) += khttpd -+subdir-$(CONFIG_PACKET) += packet -+subdir-$(CONFIG_NET_SCHED) += sched -+subdir-$(CONFIG_BRIDGE) += bridge -+subdir-$(CONFIG_IPX) += ipx -+subdir-$(CONFIG_ATALK) += appletalk -+subdir-$(CONFIG_WAN_ROUTER) += wanrouter -+subdir-$(CONFIG_X25) += x25 -+subdir-$(CONFIG_LAPB) += lapb -+subdir-$(CONFIG_NETROM) += netrom -+subdir-$(CONFIG_ROSE) += rose -+subdir-$(CONFIG_AX25) += ax25 -+subdir-$(CONFIG_IRDA) += irda -+subdir-$(CONFIG_BLUEZ) += bluetooth -+subdir-$(CONFIG_SUNRPC) += sunrpc -+subdir-$(CONFIG_ATM) += atm -+subdir-$(CONFIG_DECNET) += decnet -+subdir-$(CONFIG_ECONET) += econet -+subdir-$(CONFIG_VLAN_8021Q) += 8021q -+ -+ifeq ($(CONFIG_NETFILTER),y) -+ mod-subdirs += ipv4/ipvs -+ subdir-$(CONFIG_IP_VS) += ipv4/ipvs -+endif -+ -+obj-y := socket.o $(join $(subdir-y), $(patsubst %,/%.o,$(notdir $(subdir-y)))) -+ifeq ($(CONFIG_NET),y) -+obj-$(CONFIG_MODULES) += netsyms.o -+obj-$(CONFIG_SYSCTL) += sysctl_net.o -+endif -+ -+include $(TOPDIR)/Rules.make -diff --unified --recursive --new-file linux-2.4.30/net/core/dev.c linux-2.4.30-1-686-smp-ring3/net/core/dev.c ---- linux-2.4.30/net/core/dev.c 2005-04-04 03:42:20.000000000 +0200 -+++ linux-2.4.30-1-686-smp-ring3/net/core/dev.c 2005-10-22 23:08:27.900043250 +0200 -@@ -104,6 +104,56 @@ - #include <linux/wireless.h> /* Note : will define WIRELESS_EXT */ - #include <net/iw_handler.h> - #endif /* CONFIG_NET_RADIO || CONFIG_NET_PCMCIA_RADIO */ -+#if defined (CONFIG_RING) || defined(CONFIG_RING_MODULE) -+ -+/* #define RING_DEBUG */ -+ -+#include <linux/ring.h> -+#include <linux/version.h> -+ -+static handle_ring_skb ring_handler = NULL; -+ -+handle_ring_skb get_skb_ring_handler() { return(ring_handler); } -+ -+void set_skb_ring_handler(handle_ring_skb the_handler) { -+ ring_handler = the_handler; -+} -+ -+void do_skb_ring_handler(struct sk_buff *skb, -+ u_char recv_packet, u_char real_skb) { -+ if(ring_handler) -+ ring_handler(skb, recv_packet, real_skb); -+} -+ -+/* ******************* */ -+ -+static handle_ring_buffer buffer_ring_handler = NULL; -+ -+handle_ring_buffer get_buffer_ring_handler() { return(buffer_ring_handler); } -+ -+void set_buffer_ring_handler(handle_ring_buffer the_handler) { -+ buffer_ring_handler = the_handler; -+} -+ -+int do_buffer_ring_handler(struct net_device *dev, char *data, int len) { -+ if(buffer_ring_handler) { -+ buffer_ring_handler(dev, data, len); -+ return(1); -+ } else -+ return(0); -+} -+ -+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)) -+EXPORT_SYMBOL(get_skb_ring_handler); -+EXPORT_SYMBOL(set_skb_ring_handler); -+EXPORT_SYMBOL(do_skb_ring_handler); -+ -+EXPORT_SYMBOL(get_buffer_ring_handler); -+EXPORT_SYMBOL(set_buffer_ring_handler); -+EXPORT_SYMBOL(do_buffer_ring_handler); -+#endif -+ -+#endif - #ifdef CONFIG_PLIP - extern int plip_init(void); - #endif -@@ -1066,6 +1116,10 @@ - return -ENOMEM; - } - -+#if defined (CONFIG_RING) || defined(CONFIG_RING_MODULE) -+ if(ring_handler) ring_handler(skb, 0, 1); -+#endif /* CONFIG_RING */ -+ - /* Grab device queue */ - spin_lock_bh(&dev->queue_lock); - q = dev->qdisc; -@@ -1278,6 +1332,13 @@ - struct softnet_data *queue; - unsigned long flags; - -+#if defined (CONFIG_RING) || defined(CONFIG_RING_MODULE) -+ if(ring_handler && ring_handler(skb, 1, 1)) { -+ /* The packet has been copied into a ring */ -+ return(NET_RX_SUCCESS); -+ } -+#endif /* CONFIG_RING */ -+ - if (skb->stamp.tv_sec == 0) - do_gettimeofday(&skb->stamp); - -@@ -1464,6 +1525,13 @@ - int ret = NET_RX_DROP; - unsigned short type; - -+#if defined (CONFIG_RING) || defined(CONFIG_RING_MODULE) -+ if(ring_handler && ring_handler(skb, 1, 1)) { -+ /* The packet has been copied into a ring */ -+ return(NET_RX_SUCCESS); -+ } -+#endif /* CONFIG_RING */ -+ - if (skb->stamp.tv_sec == 0) - do_gettimeofday(&skb->stamp); - -diff --unified --recursive --new-file linux-2.4.30/net/core/dev.c.ORG linux-2.4.30-1-686-smp-ring3/net/core/dev.c.ORG ---- linux-2.4.30/net/core/dev.c.ORG 1970-01-01 01:00:00.000000000 +0100 -+++ linux-2.4.30-1-686-smp-ring3/net/core/dev.c.ORG 2005-10-22 23:08:27.472016500 +0200 -@@ -0,0 +1,2926 @@ -+/* -+ * NET3 Protocol independent device support routines. -+ * -+ * This program is free software; you can redistribute it and/or -+ * modify it under the terms of the GNU General Public License -+ * as published by the Free Software Foundation; either version -+ * 2 of the License, or (at your option) any later version. -+ * -+ * Derived from the non IP parts of dev.c 1.0.19 -+ * Authors: Ross Biro, <bir7@leland.Stanford.Edu> -+ * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> -+ * Mark Evans, <evansmp@uhura.aston.ac.uk> -+ * -+ * Additional Authors: -+ * Florian la Roche <rzsfl@rz.uni-sb.de> -+ * Alan Cox <gw4pts@gw4pts.ampr.org> -+ * David Hinds <dahinds@users.sourceforge.net> -+ * Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> -+ * Adam Sulmicki <adam@cfar.umd.edu> -+ * Pekka Riikonen <priikone@poesidon.pspt.fi> -+ * -+ * Changes: -+ * D.J. Barrow : Fixed bug where dev->refcnt gets set to 2 -+ * if register_netdev gets called before -+ * net_dev_init & also removed a few lines -+ * of code in the process. -+ * Alan Cox : device private ioctl copies fields back. -+ * Alan Cox : Transmit queue code does relevant stunts to -+ * keep the queue safe. -+ * Alan Cox : Fixed double lock. -+ * Alan Cox : Fixed promisc NULL pointer trap -+ * ???????? : Support the full private ioctl range -+ * Alan Cox : Moved ioctl permission check into drivers -+ * Tim Kordas : SIOCADDMULTI/SIOCDELMULTI -+ * Alan Cox : 100 backlog just doesn't cut it when -+ * you start doing multicast video 8) -+ * Alan Cox : Rewrote net_bh and list manager. -+ * Alan Cox : Fix ETH_P_ALL echoback lengths. -+ * Alan Cox : Took out transmit every packet pass -+ * Saved a few bytes in the ioctl handler -+ * Alan Cox : Network driver sets packet type before calling netif_rx. Saves -+ * a function call a packet. -+ * Alan Cox : Hashed net_bh() -+ * Richard Kooijman: Timestamp fixes. -+ * Alan Cox : Wrong field in SIOCGIFDSTADDR -+ * Alan Cox : Device lock protection. -+ * Alan Cox : Fixed nasty side effect of device close changes. -+ * Rudi Cilibrasi : Pass the right thing to set_mac_address() -+ * Dave Miller : 32bit quantity for the device lock to make it work out -+ * on a Sparc. -+ * Bjorn Ekwall : Added KERNELD hack. -+ * Alan Cox : Cleaned up the backlog initialise. -+ * Craig Metz : SIOCGIFCONF fix if space for under -+ * 1 device. -+ * Thomas Bogendoerfer : Return ENODEV for dev_open, if there -+ * is no device open function. -+ * Andi Kleen : Fix error reporting for SIOCGIFCONF -+ * Michael Chastain : Fix signed/unsigned for SIOCGIFCONF -+ * Cyrus Durgin : Cleaned for KMOD -+ * Adam Sulmicki : Bug Fix : Network Device Unload -+ * A network device unload needs to purge -+ * the backlog queue. -+ * Paul Rusty Russell : SIOCSIFNAME -+ * Pekka Riikonen : Netdev boot-time settings code -+ * Andrew Morton : Make unregister_netdevice wait indefinitely on dev->refcnt -+ * J Hadi Salim : - Backlog queue sampling -+ * - netif_rx() feedback -+ */ -+ -+#include <asm/uaccess.h> -+#include <asm/system.h> -+#include <asm/bitops.h> -+#include <linux/config.h> -+#include <linux/types.h> -+#include <linux/kernel.h> -+#include <linux/sched.h> -+#include <linux/string.h> -+#include <linux/mm.h> -+#include <linux/socket.h> -+#include <linux/sockios.h> -+#include <linux/errno.h> -+#include <linux/interrupt.h> -+#include <linux/if_ether.h> -+#include <linux/netdevice.h> -+#include <linux/etherdevice.h> -+#include <linux/notifier.h> -+#include <linux/skbuff.h> -+#include <linux/brlock.h> -+#include <net/sock.h> -+#include <linux/rtnetlink.h> -+#include <linux/proc_fs.h> -+#include <linux/stat.h> -+#include <linux/if_bridge.h> -+#include <linux/divert.h> -+#include <net/dst.h> -+#include <net/pkt_sched.h> -+#include <net/profile.h> -+#include <net/checksum.h> -+#include <linux/highmem.h> -+#include <linux/init.h> -+#include <linux/kmod.h> -+#include <linux/module.h> -+#if defined(CONFIG_NET_RADIO) || defined(CONFIG_NET_PCMCIA_RADIO) -+#include <linux/wireless.h> /* Note : will define WIRELESS_EXT */ -+#include <net/iw_handler.h> -+#endif /* CONFIG_NET_RADIO || CONFIG_NET_PCMCIA_RADIO */ -+#ifdef CONFIG_PLIP -+extern int plip_init(void); -+#endif -+ -+ -+/* This define, if set, will randomly drop a packet when congestion -+ * is more than moderate. It helps fairness in the multi-interface -+ * case when one of them is a hog, but it kills performance for the -+ * single interface case so it is off now by default. -+ */ -+#undef RAND_LIE -+ -+/* Setting this will sample the queue lengths and thus congestion -+ * via a timer instead of as each packet is received. -+ */ -+#undef OFFLINE_SAMPLE -+ -+NET_PROFILE_DEFINE(dev_queue_xmit) -+NET_PROFILE_DEFINE(softnet_process) -+ -+const char *if_port_text[] = { -+ "unknown", -+ "BNC", -+ "10baseT", -+ "AUI", -+ "100baseT", -+ "100baseTX", -+ "100baseFX" -+}; -+ -+/* -+ * The list of packet types we will receive (as opposed to discard) -+ * and the routines to invoke. -+ * -+ * Why 16. Because with 16 the only overlap we get on a hash of the -+ * low nibble of the protocol value is RARP/SNAP/X.25. -+ * -+ * NOTE: That is no longer true with the addition of VLAN tags. Not -+ * sure which should go first, but I bet it won't make much -+ * difference if we are running VLANs. The good news is that -+ * this protocol won't be in the list unless compiled in, so -+ * the average user (w/out VLANs) will not be adversly affected. -+ * --BLG -+ * -+ * 0800 IP -+ * 8100 802.1Q VLAN -+ * 0001 802.3 -+ * 0002 AX.25 -+ * 0004 802.2 -+ * 8035 RARP -+ * 0005 SNAP -+ * 0805 X.25 -+ * 0806 ARP -+ * 8137 IPX -+ * 0009 Localtalk -+ * 86DD IPv6 -+ */ -+ -+static struct packet_type *ptype_base[16]; /* 16 way hashed list */ -+static struct packet_type *ptype_all = NULL; /* Taps */ -+ -+#ifdef OFFLINE_SAMPLE -+static void sample_queue(unsigned long dummy); -+static struct timer_list samp_timer = { function: sample_queue }; -+#endif -+ -+#ifdef CONFIG_HOTPLUG -+static int net_run_sbin_hotplug(struct net_device *dev, char *action); -+#else -+#define net_run_sbin_hotplug(dev, action) ({ 0; }) -+#endif -+ -+/* -+ * Our notifier list -+ */ -+ -+static struct notifier_block *netdev_chain=NULL; -+ -+/* -+ * Device drivers call our routines to queue packets here. We empty the -+ * queue in the local softnet handler. -+ */ -+struct softnet_data softnet_data[NR_CPUS] __cacheline_aligned; -+ -+#ifdef CONFIG_NET_FASTROUTE -+int netdev_fastroute; -+int netdev_fastroute_obstacles; -+#endif -+ -+ -+/****************************************************************************************** -+ -+ Protocol management and registration routines -+ -+*******************************************************************************************/ -+ -+/* -+ * For efficiency -+ */ -+ -+int netdev_nit=0; -+ -+/* -+ * Add a protocol ID to the list. Now that the input handler is -+ * smarter we can dispense with all the messy stuff that used to be -+ * here. -+ * -+ * BEWARE!!! Protocol handlers, mangling input packets, -+ * MUST BE last in hash buckets and checking protocol handlers -+ * MUST start from promiscous ptype_all chain in net_bh. -+ * It is true now, do not change it. -+ * Explantion follows: if protocol handler, mangling packet, will -+ * be the first on list, it is not able to sense, that packet -+ * is cloned and should be copied-on-write, so that it will -+ * change it and subsequent readers will get broken packet. -+ * --ANK (980803) -+ */ -+ -+/** -+ * dev_add_pack - add packet handler -+ * @pt: packet type declaration -+ * -+ * Add a protocol handler to the networking stack. The passed &packet_type -+ * is linked into kernel lists and may not be freed until it has been -+ * removed from the kernel lists. -+ */ -+ -+void dev_add_pack(struct packet_type *pt) -+{ -+ int hash; -+ -+ br_write_lock_bh(BR_NETPROTO_LOCK); -+ -+#ifdef CONFIG_NET_FASTROUTE -+ /* Hack to detect packet socket */ -+ if ((pt->data) && ((int)(pt->data)!=1)) { -+ netdev_fastroute_obstacles++; -+ dev_clear_fastroute(pt->dev); -+ } -+#endif -+ if (pt->type == htons(ETH_P_ALL)) { -+ netdev_nit++; -+ pt->next=ptype_all; -+ ptype_all=pt; -+ } else { -+ hash=ntohs(pt->type)&15; -+ pt->next = ptype_base[hash]; -+ ptype_base[hash] = pt; -+ } -+ br_write_unlock_bh(BR_NETPROTO_LOCK); -+} -+ -+ -+/** -+ * dev_remove_pack - remove packet handler -+ * @pt: packet type declaration -+ * -+ * Remove a protocol handler that was previously added to the kernel -+ * protocol handlers by dev_add_pack(). The passed &packet_type is removed -+ * from the kernel lists and can be freed or reused once this function -+ * returns. -+ */ -+ -+void dev_remove_pack(struct packet_type *pt) -+{ -+ struct packet_type **pt1; -+ -+ br_write_lock_bh(BR_NETPROTO_LOCK); -+ -+ if (pt->type == htons(ETH_P_ALL)) { -+ netdev_nit--; -+ pt1=&ptype_all; -+ } else { -+ pt1=&ptype_base[ntohs(pt->type)&15]; -+ } -+ -+ for (; (*pt1) != NULL; pt1 = &((*pt1)->next)) { -+ if (pt == (*pt1)) { -+ *pt1 = pt->next; -+#ifdef CONFIG_NET_FASTROUTE -+ if (pt->data) -+ netdev_fastroute_obstacles--; -+#endif -+ br_write_unlock_bh(BR_NETPROTO_LOCK); -+ return; -+ } -+ } -+ br_write_unlock_bh(BR_NETPROTO_LOCK); -+ printk(KERN_WARNING "dev_remove_pack: %p not found.\n", pt); -+} -+ -+/****************************************************************************** -+ -+ Device Boot-time Settings Routines -+ -+*******************************************************************************/ -+ -+/* Boot time configuration table */ -+static struct netdev_boot_setup dev_boot_setup[NETDEV_BOOT_SETUP_MAX]; -+ -+/** -+ * netdev_boot_setup_add - add new setup entry -+ * @name: name of the device -+ * @map: configured settings for the device -+ * -+ * Adds new setup entry to the dev_boot_setup list. The function -+ * returns 0 on error and 1 on success. This is a generic routine to -+ * all netdevices. -+ */ -+int netdev_boot_setup_add(char *name, struct ifmap *map) -+{ -+ struct netdev_boot_setup *s; -+ int i; -+ -+ s = dev_boot_setup; -+ for (i = 0; i < NETDEV_BOOT_SETUP_MAX; i++) { -+ if (s[i].name[0] == '\0' || s[i].name[0] == ' ') { -+ memset(s[i].name, 0, sizeof(s[i].name)); -+ strcpy(s[i].name, name); -+ memcpy(&s[i].map, map, sizeof(s[i].map)); -+ break; -+ } -+ } -+ -+ if (i >= NETDEV_BOOT_SETUP_MAX) -+ return 0; -+ -+ return 1; -+} -+ -+/** -+ * netdev_boot_setup_check - check boot time settings -+ * @dev: the netdevice -+ * -+ * Check boot time settings for the device. -+ * The found settings are set for the device to be used -+ * later in the device probing. -+ * Returns 0 if no settings found, 1 if they are. -+ */ -+int netdev_boot_setup_check(struct net_device *dev) -+{ -+ struct netdev_boot_setup *s; -+ int i; -+ -+ s = dev_boot_setup; -+ for (i = 0; i < NETDEV_BOOT_SETUP_MAX; i++) { -+ if (s[i].name[0] != '\0' && s[i].name[0] != ' ' && -+ !strncmp(dev->name, s[i].name, strlen(s[i].name))) { -+ dev->irq = s[i].map.irq; -+ dev->base_addr = s[i].map.base_addr; -+ dev->mem_start = s[i].map.mem_start; -+ dev->mem_end = s[i].map.mem_end; -+ return 1; -+ } -+ } -+ return 0; -+} -+ -+/* -+ * Saves at boot time configured settings for any netdevice. -+ */ -+int __init netdev_boot_setup(char *str) -+{ -+ int ints[5]; -+ struct ifmap map; -+ -+ str = get_options(str, ARRAY_SIZE(ints), ints); -+ if (!str || !*str) -+ return 0; -+ -+ /* Save settings */ -+ memset(&map, 0, sizeof(map)); -+ if (ints[0] > 0) -+ map.irq = ints[1]; -+ if (ints[0] > 1) -+ map.base_addr = ints[2]; -+ if (ints[0] > 2) -+ map.mem_start = ints[3]; -+ if (ints[0] > 3) -+ map.mem_end = ints[4]; -+ -+ /* Add new entry to the list */ -+ return netdev_boot_setup_add(str, &map); -+} -+ -+__setup("netdev=", netdev_boot_setup); -+ -+/***************************************************************************************** -+ -+ Device Interface Subroutines -+ -+******************************************************************************************/ -+ -+/** -+ * __dev_get_by_name - find a device by its name -+ * @name: name to find -+ * -+ * Find an interface by name. Must be called under RTNL semaphore -+ * or @dev_base_lock. If the name is found a pointer to the device -+ * is returned. If the name is not found then %NULL is returned. The -+ * reference counters are not incremented so the caller must be -+ * careful with locks. -+ */ -+ -+ -+struct net_device *__dev_get_by_name(const char *name) -+{ -+ struct net_device *dev; -+ -+ for (dev = dev_base; dev != NULL; dev = dev->next) { -+ if (strncmp(dev->name, name, IFNAMSIZ) == 0) -+ return dev; -+ } -+ return NULL; -+} -+ -+/** -+ * dev_get_by_name - find a device by its name -+ * @name: name to find -+ * -+ * Find an interface by name. This can be called from any -+ * context and does its own locking. The returned handle has -+ * the usage count incremented and the caller must use dev_put() to -+ * release it when it is no longer needed. %NULL is returned if no -+ * matching device is found. -+ */ -+ -+struct net_device *dev_get_by_name(const char *name) -+{ -+ struct net_device *dev; -+ -+ read_lock(&dev_base_lock); -+ dev = __dev_get_by_name(name); -+ if (dev) -+ dev_hold(dev); -+ read_unlock(&dev_base_lock); -+ return dev; -+} -+ -+/* -+ Return value is changed to int to prevent illegal usage in future. -+ It is still legal to use to check for device existence. -+ -+ User should understand, that the result returned by this function -+ is meaningless, if it was not issued under rtnl semaphore. -+ */ -+ -+/** -+ * dev_get - test if a device exists -+ * @name: name to test for -+ * -+ * Test if a name exists. Returns true if the name is found. In order -+ * to be sure the name is not allocated or removed during the test the -+ * caller must hold the rtnl semaphore. -+ * -+ * This function primarily exists for back compatibility with older -+ * drivers. -+ */ -+ -+int dev_get(const char *name) -+{ -+ struct net_device *dev; -+ -+ read_lock(&dev_base_lock); -+ dev = __dev_get_by_name(name); -+ read_unlock(&dev_base_lock); -+ return dev != NULL; -+} -+ -+/** -+ * __dev_get_by_index - find a device by its ifindex -+ * @ifindex: index of device -+ * -+ * Search for an interface by index. Returns %NULL if the device -+ * is not found or a pointer to the device. The device has not -+ * had its reference counter increased so the caller must be careful -+ * about locking. The caller must hold either the RTNL semaphore -+ * or @dev_base_lock. -+ */ -+ -+struct net_device * __dev_get_by_index(int ifindex) -+{ -+ struct net_device *dev; -+ -+ for (dev = dev_base; dev != NULL; dev = dev->next) { -+ if (dev->ifindex == ifindex) -+ return dev; -+ } -+ return NULL; -+} -+ -+ -+/** -+ * dev_get_by_index - find a device by its ifindex -+ * @ifindex: index of device -+ * -+ * Search for an interface by index. Returns NULL if the device -+ * is not found or a pointer to the device. The device returned has -+ * had a reference added and the pointer is safe until the user calls -+ * dev_put to indicate they have finished with it. -+ */ -+ -+struct net_device * dev_get_by_index(int ifindex) -+{ -+ struct net_device *dev; -+ -+ read_lock(&dev_base_lock); -+ dev = __dev_get_by_index(ifindex); -+ if (dev) -+ dev_hold(dev); -+ read_unlock(&dev_base_lock); -+ return dev; -+} -+ -+/** -+ * dev_getbyhwaddr - find a device by its hardware address -+ * @type: media type of device -+ * @ha: hardware address -+ * -+ * Search for an interface by MAC address. Returns NULL if the device -+ * is not found or a pointer to the device. The caller must hold the -+ * rtnl semaphore. The returned device has not had its ref count increased -+ * and the caller must therefore be careful about locking -+ * -+ * BUGS: -+ * If the API was consistent this would be __dev_get_by_hwaddr -+ */ -+ -+struct net_device *dev_getbyhwaddr(unsigned short type, char *ha) -+{ -+ struct net_device *dev; -+ -+ ASSERT_RTNL(); -+ -+ for (dev = dev_base; dev != NULL; dev = dev->next) { -+ if (dev->type == type && -+ memcmp(dev->dev_addr, ha, dev->addr_len) == 0) -+ return dev; -+ } -+ return NULL; -+} -+ -+/** -+ * dev_get_by_flags - find any device with given flags -+ * @if_flags: IFF_* values -+ * @mask: bitmask of bits in if_flags to check -+ * -+ * Search for any interface with the given flags. Returns NULL if a device -+ * is not found or a pointer to the device. The device returned has -+ * had a reference added and the pointer is safe until the user calls -+ * dev_put to indicate they have finished with it. -+ */ -+ -+struct net_device * dev_get_by_flags(unsigned short if_flags, unsigned short mask) -+{ -+ struct net_device *dev; -+ -+ read_lock(&dev_base_lock); -+ dev = __dev_get_by_flags(if_flags, mask); -+ if (dev) -+ dev_hold(dev); -+ read_unlock(&dev_base_lock); -+ return dev; -+} -+ -+/** -+ * __dev_get_by_flags - find any device with given flags -+ * @if_flags: IFF_* values -+ * @mask: bitmask of bits in if_flags to check -+ * -+ * Search for any interface with the given flags. Returns NULL if a device -+ * is not found or a pointer to the device. The caller must hold either -+ * the RTNL semaphore or @dev_base_lock. -+ */ -+ -+struct net_device *__dev_get_by_flags(unsigned short if_flags, unsigned short mask) -+{ -+ struct net_device *dev; -+ -+ for (dev = dev_base; dev != NULL; dev = dev->next) { -+ if (((dev->flags ^ if_flags) & mask) == 0) -+ return dev; -+ } -+ return NULL; -+} -+ -+/** -+ * dev_alloc_name - allocate a name for a device -+ * @dev: device -+ * @name: name format string -+ * -+ * Passed a format string - eg "lt%d" it will try and find a suitable -+ * id. Not efficient for many devices, not called a lot. The caller -+ * must hold the dev_base or rtnl lock while allocating the name and -+ * adding the device in order to avoid duplicates. Returns the number -+ * of the unit assigned or a negative errno code. -+ */ -+ -+int dev_alloc_name(struct net_device *dev, const char *name) -+{ -+ int i; -+ char buf[32]; -+ char *p; -+ -+ /* -+ * Verify the string as this thing may have come from -+ * the user. There must be either one "%d" and no other "%" -+ * characters, or no "%" characters at all. -+ */ -+ p = strchr(name, '%'); -+ if (p && (p[1] != 'd' || strchr(p+2, '%'))) -+ return -EINVAL; -+ -+ /* -+ * If you need over 100 please also fix the algorithm... -+ */ -+ for (i = 0; i < 100; i++) { -+ snprintf(buf,sizeof(buf),name,i); -+ if (__dev_get_by_name(buf) == NULL) { -+ strcpy(dev->name, buf); -+ return i; -+ } -+ } -+ return -ENFILE; /* Over 100 of the things .. bail out! */ -+} -+ -+/** -+ * dev_alloc - allocate a network device and name -+ * @name: name format string -+ * @err: error return pointer -+ * -+ * Passed a format string, eg. "lt%d", it will allocate a network device -+ * and space for the name. %NULL is returned if no memory is available. -+ * If the allocation succeeds then the name is assigned and the -+ * device pointer returned. %NULL is returned if the name allocation -+ * failed. The cause of an error is returned as a negative errno code -+ * in the variable @err points to. -+ * -+ * The caller must hold the @dev_base or RTNL locks when doing this in -+ * order to avoid duplicate name allocations. -+ */ -+ -+struct net_device *dev_alloc(const char *name, int *err) -+{ -+ struct net_device *dev=kmalloc(sizeof(struct net_device), GFP_KERNEL); -+ if (dev == NULL) { -+ *err = -ENOBUFS; -+ return NULL; -+ } -+ memset(dev, 0, sizeof(struct net_device)); -+ *err = dev_alloc_name(dev, name); -+ if (*err < 0) { -+ kfree(dev); -+ return NULL; -+ } -+ return dev; -+} -+ -+/** -+ * netdev_state_change - device changes state -+ * @dev: device to cause notification -+ * -+ * Called to indicate a device has changed state. This function calls -+ * the notifier chains for netdev_chain and sends a NEWLINK message -+ * to the routing socket. -+ */ -+ -+void netdev_state_change(struct net_device *dev) -+{ -+ if (dev->flags&IFF_UP) { -+ notifier_call_chain(&netdev_chain, NETDEV_CHANGE, dev); -+ rtmsg_ifinfo(RTM_NEWLINK, dev, 0); -+ } -+} -+ -+ -+#ifdef CONFIG_KMOD -+ -+/** -+ * dev_load - load a network module -+ * @name: name of interface -+ * -+ * If a network interface is not present and the process has suitable -+ * privileges this function loads the module. If module loading is not -+ * available in this kernel then it becomes a nop. -+ */ -+ -+void dev_load(const char *name) -+{ -+ if (!dev_get(name) && capable(CAP_SYS_MODULE)) -+ request_module(name); -+} -+ -+#else -+ -+extern inline void dev_load(const char *unused){;} -+ -+#endif -+ -+static int default_rebuild_header(struct sk_buff *skb) -+{ -+ printk(KERN_DEBUG "%s: default_rebuild_header called -- BUG!\n", skb->dev ? skb->dev->name : "NULL!!!"); -+ kfree_skb(skb); -+ return 1; -+} -+ -+/** -+ * dev_open - prepare an interface for use. -+ * @dev: device to open -+ * -+ * Takes a device from down to up state. The device's private open -+ * function is invoked and then the multicast lists are loaded. Finally -+ * the device is moved into the up state and a %NETDEV_UP message is -+ * sent to the netdev notifier chain. -+ * -+ * Calling this function on an active interface is a nop. On a failure -+ * a negative errno code is returned. -+ */ -+ -+int dev_open(struct net_device *dev) -+{ -+ int ret = 0; -+ -+ /* -+ * Is it already up? -+ */ -+ -+ if (dev->flags&IFF_UP) -+ return 0; -+ -+ /* -+ * Is it even present? -+ */ -+ if (!netif_device_present(dev)) -+ return -ENODEV; -+ -+ /* -+ * Call device private open method -+ */ -+ if (try_inc_mod_count(dev->owner)) { -+ set_bit(__LINK_STATE_START, &dev->state); -+ if (dev->open) { -+ ret = dev->open(dev); -+ if (ret != 0) { -+ clear_bit(__LINK_STATE_START, &dev->state); -+ if (dev->owner) -+ __MOD_DEC_USE_COUNT(dev->owner); -+ } -+ } -+ } else { -+ ret = -ENODEV; -+ } -+ -+ /* -+ * If it went open OK then: -+ */ -+ -+ if (ret == 0) -+ { -+ /* -+ * Set the flags. -+ */ -+ dev->flags |= IFF_UP; -+ -+ /* -+ * Initialize multicasting status -+ */ -+ dev_mc_upload(dev); -+ -+ /* -+ * Wakeup transmit queue engine -+ */ -+ dev_activate(dev); -+ -+ /* -+ * ... and announce new interface. -+ */ -+ notifier_call_chain(&netdev_chain, NETDEV_UP, dev); -+ } -+ return(ret); -+} -+ -+#ifdef CONFIG_NET_FASTROUTE -+ -+static void dev_do_clear_fastroute(struct net_device *dev) -+{ -+ if (dev->accept_fastpath) { -+ int i; -+ -+ for (i=0; i<=NETDEV_FASTROUTE_HMASK; i++) { -+ struct dst_entry *dst; -+ -+ write_lock_irq(&dev->fastpath_lock); -+ dst = dev->fastpath[i]; -+ dev->fastpath[i] = NULL; -+ write_unlock_irq(&dev->fastpath_lock); -+ -+ dst_release(dst); -+ } -+ } -+} -+ -+void dev_clear_fastroute(struct net_device *dev) -+{ -+ if (dev) { -+ dev_do_clear_fastroute(dev); -+ } else { -+ read_lock(&dev_base_lock); -+ for (dev = dev_base; dev; dev = dev->next) -+ dev_do_clear_fastroute(dev); -+ read_unlock(&dev_base_lock); -+ } -+} -+#endif -+ -+/** -+ * dev_close - shutdown an interface. -+ * @dev: device to shutdown -+ * -+ * This function moves an active device into down state. A -+ * %NETDEV_GOING_DOWN is sent to the netdev notifier chain. The device -+ * is then deactivated and finally a %NETDEV_DOWN is sent to the notifier -+ * chain. -+ */ -+ -+int dev_close(struct net_device *dev) -+{ -+ if (!(dev->flags&IFF_UP)) -+ return 0; -+ -+ /* -+ * Tell people we are going down, so that they can -+ * prepare to death, when device is still operating. -+ */ -+ notifier_call_chain(&netdev_chain, NETDEV_GOING_DOWN, dev); -+ -+ dev_deactivate(dev); -+ -+ clear_bit(__LINK_STATE_START, &dev->state); -+ -+ /* Synchronize to scheduled poll. We cannot touch poll list, -+ * it can be even on different cpu. So just clear netif_running(), -+ * and wait when poll really will happen. Actually, the best place -+ * for this is inside dev->stop() after device stopped its irq -+ * engine, but this requires more changes in devices. */ -+ -+ smp_mb__after_clear_bit(); /* Commit netif_running(). */ -+ while (test_bit(__LINK_STATE_RX_SCHED, &dev->state)) { -+ /* No hurry. */ -+ current->state = TASK_INTERRUPTIBLE; -+ schedule_timeout(1); -+ } -+ -+ /* -+ * Call the device specific close. This cannot fail. -+ * Only if device is UP -+ * -+ * We allow it to be called even after a DETACH hot-plug -+ * event. -+ */ -+ -+ if (dev->stop) -+ dev->stop(dev); -+ -+ /* -+ * Device is now down. -+ */ -+ -+ dev->flags &= ~IFF_UP; -+#ifdef CONFIG_NET_FASTROUTE -+ dev_clear_fastroute(dev); -+#endif -+ -+ /* -+ * Tell people we are down -+ */ -+ notifier_call_chain(&netdev_chain, NETDEV_DOWN, dev); -+ -+ /* -+ * Drop the module refcount -+ */ -+ if (dev->owner) -+ __MOD_DEC_USE_COUNT(dev->owner); -+ -+ return(0); -+} -+ -+ -+/* -+ * Device change register/unregister. These are not inline or static -+ * as we export them to the world. -+ */ -+ -+/** -+ * register_netdevice_notifier - register a network notifier block -+ * @nb: notifier -+ * -+ * Register a notifier to be called when network device events occur. -+ * The notifier passed is linked into the kernel structures and must -+ * not be reused until it has been unregistered. A negative errno code -+ * is returned on a failure. -+ */ -+ -+int register_netdevice_notifier(struct notifier_block *nb) -+{ -+ return notifier_chain_register(&netdev_chain, nb); -+} -+ -+/** -+ * unregister_netdevice_notifier - unregister a network notifier block -+ * @nb: notifier -+ * -+ * Unregister a notifier previously registered by -+ * register_netdevice_notifier(). The notifier is unlinked into the -+ * kernel structures and may then be reused. A negative errno code -+ * is returned on a failure. -+ */ -+ -+int unregister_netdevice_notifier(struct notifier_block *nb) -+{ -+ return notifier_chain_unregister(&netdev_chain,nb); -+} -+ -+/* -+ * Support routine. Sends outgoing frames to any network -+ * taps currently in use. -+ */ -+ -+void dev_queue_xmit_nit(struct sk_buff *skb, struct net_device *dev) -+{ -+ struct packet_type *ptype; -+ do_gettimeofday(&skb->stamp); -+ -+ br_read_lock(BR_NETPROTO_LOCK); -+ for (ptype = ptype_all; ptype!=NULL; ptype = ptype->next) -+ { -+ /* Never send packets back to the socket -+ * they originated from - MvS (miquels@drinkel.ow.org) -+ */ -+ if ((ptype->dev == dev || !ptype->dev) && -+ ((struct sock *)ptype->data != skb->sk)) -+ { -+ struct sk_buff *skb2; -+ if ((skb2 = skb_clone(skb, GFP_ATOMIC)) == NULL) -+ break; -+ -+ /* skb->nh should be correctly -+ set by sender, so that the second statement is -+ just protection against buggy protocols. -+ */ -+ skb2->mac.raw = skb2->data; -+ -+ if (skb2->nh.raw < skb2->data || skb2->nh.raw > skb2->tail) { -+ if (net_ratelimit()) -+ printk(KERN_CRIT "protocol %04x is buggy, dev %s\n", skb2->protocol, dev->name); -+ skb2->nh.raw = skb2->data; -+ } -+ -+ skb2->h.raw = skb2->nh.raw; -+ skb2->pkt_type = PACKET_OUTGOING; -+ ptype->func(skb2, skb->dev, ptype); -+ } -+ } -+ br_read_unlock(BR_NETPROTO_LOCK); -+} -+ -+/* Calculate csum in the case, when packet is misrouted. -+ * If it failed by some reason, ignore and send skb with wrong -+ * checksum. -+ */ -+struct sk_buff * skb_checksum_help(struct sk_buff *skb) -+{ -+ int offset; -+ unsigned int csum; -+ -+ offset = skb->h.raw - skb->data; -+ if (offset > (int)skb->len) -+ BUG(); -+ csum = skb_checksum(skb, offset, skb->len-offset, 0); -+ -+ offset = skb->tail - skb->h.raw; -+ if (offset <= 0) -+ BUG(); -+ if (skb->csum+2 > offset) -+ BUG(); -+ -+ *(u16*)(skb->h.raw + skb->csum) = csum_fold(csum); -+ skb->ip_summed = CHECKSUM_NONE; -+ return skb; -+} -+ -+#ifdef CONFIG_HIGHMEM -+/* Actually, we should eliminate this check as soon as we know, that: -+ * 1. IOMMU is present and allows to map all the memory. -+ * 2. No high memory really exists on this machine. -+ */ -+ -+static inline int -+illegal_highdma(struct net_device *dev, struct sk_buff *skb) -+{ -+ int i; -+ -+ if (dev->features&NETIF_F_HIGHDMA) -+ return 0; -+ -+ for (i=0; i<skb_shinfo(skb)->nr_frags; i++) -+ if (skb_shinfo(skb)->frags[i].page >= highmem_start_page) -+ return 1; -+ -+ return 0; -+} -+#else -+#define illegal_highdma(dev, skb) (0) -+#endif -+ -+/** -+ * dev_queue_xmit - transmit a buffer -+ * @skb: buffer to transmit -+ * -+ * Queue a buffer for transmission to a network device. The caller must -+ * have set the device and priority and built the buffer before calling this -+ * function. The function can be called from an interrupt. -+ * -+ * A negative errno code is returned on a failure. A success does not -+ * guarantee the frame will be transmitted as it may be dropped due -+ * to congestion or traffic shaping. -+ */ -+ -+int dev_queue_xmit(struct sk_buff *skb) -+{ -+ struct net_device *dev = skb->dev; -+ struct Qdisc *q; -+ -+ if (skb_shinfo(skb)->frag_list && -+ !(dev->features&NETIF_F_FRAGLIST) && -+ skb_linearize(skb, GFP_ATOMIC) != 0) { -+ kfree_skb(skb); -+ return -ENOMEM; -+ } -+ -+ /* Fragmented skb is linearized if device does not support SG, -+ * or if at least one of fragments is in highmem and device -+ * does not support DMA from it. -+ */ -+ if (skb_shinfo(skb)->nr_frags && -+ (!(dev->features&NETIF_F_SG) || illegal_highdma(dev, skb)) && -+ skb_linearize(skb, GFP_ATOMIC) != 0) { -+ kfree_skb(skb); -+ return -ENOMEM; -+ } -+ -+ /* If packet is not checksummed and device does not support -+ * checksumming for this protocol, complete checksumming here. -+ */ -+ if (skb->ip_summed == CHECKSUM_HW && -+ (!(dev->features&(NETIF_F_HW_CSUM|NETIF_F_NO_CSUM)) && -+ (!(dev->features&NETIF_F_IP_CSUM) || -+ skb->protocol != htons(ETH_P_IP)))) { -+ if ((skb = skb_checksum_help(skb)) == NULL) -+ return -ENOMEM; -+ } -+ -+ /* Grab device queue */ -+ spin_lock_bh(&dev->queue_lock); -+ q = dev->qdisc; -+ if (q->enqueue) { -+ int ret = q->enqueue(skb, q); -+ -+ qdisc_run(dev); -+ -+ spin_unlock_bh(&dev->queue_lock); -+ return ret == NET_XMIT_BYPASS ? NET_XMIT_SUCCESS : ret; -+ } -+ -+ /* The device has no queue. Common case for software devices: -+ loopback, all the sorts of tunnels... -+ -+ Really, it is unlikely that xmit_lock protection is necessary here. -+ (f.e. loopback and IP tunnels are clean ignoring statistics counters.) -+ However, it is possible, that they rely on protection -+ made by us here. -+ -+ Check this and shot the lock. It is not prone from deadlocks. -+ Either shot noqueue qdisc, it is even simpler 8) -+ */ -+ if (dev->flags&IFF_UP) { -+ int cpu = smp_processor_id(); -+ -+ if (dev->xmit_lock_owner != cpu) { -+ spin_unlock(&dev->queue_lock); -+ spin_lock(&dev->xmit_lock); -+ dev->xmit_lock_owner = cpu; -+ -+ if (!netif_queue_stopped(dev)) { -+ if (netdev_nit) -+ dev_queue_xmit_nit(skb,dev); -+ -+ if (dev->hard_start_xmit(skb, dev) == 0) { -+ dev->xmit_lock_owner = -1; -+ spin_unlock_bh(&dev->xmit_lock); -+ return 0; -+ } -+ } -+ dev->xmit_lock_owner = -1; -+ spin_unlock_bh(&dev->xmit_lock); -+ if (net_ratelimit()) -+ printk(KERN_CRIT "Virtual device %s asks to queue packet!\n", dev->name); -+ kfree_skb(skb); -+ return -ENETDOWN; -+ } else { -+ /* Recursion is detected! It is possible, unfortunately */ -+ if (net_ratelimit()) -+ printk(KERN_CRIT "Dead loop on virtual device %s, fix it urgently!\n", dev->name); -+ } -+ } -+ spin_unlock_bh(&dev->queue_lock); -+ -+ kfree_skb(skb); -+ return -ENETDOWN; -+} -+ -+ -+/*======================================================================= -+ Receiver routines -+ =======================================================================*/ -+ -+int netdev_max_backlog = 300; -+int weight_p = 64; /* old backlog weight */ -+/* These numbers are selected based on intuition and some -+ * experimentatiom, if you have more scientific way of doing this -+ * please go ahead and fix things. -+ */ -+int no_cong_thresh = 10; -+int no_cong = 20; -+int lo_cong = 100; -+int mod_cong = 290; -+ -+struct netif_rx_stats netdev_rx_stat[NR_CPUS]; -+ -+ -+#ifdef CONFIG_NET_HW_FLOWCONTROL -+atomic_t netdev_dropping = ATOMIC_INIT(0); -+static unsigned long netdev_fc_mask = 1; -+unsigned long netdev_fc_xoff = 0; -+spinlock_t netdev_fc_lock = SPIN_LOCK_UNLOCKED; -+ -+static struct -+{ -+ void (*stimul)(struct net_device *); -+ struct net_device *dev; -+} netdev_fc_slots[BITS_PER_LONG]; -+ -+int netdev_register_fc(struct net_device *dev, void (*stimul)(struct net_device *dev)) -+{ -+ int bit = 0; -+ unsigned long flags; -+ -+ spin_lock_irqsave(&netdev_fc_lock, flags); -+ if (netdev_fc_mask != ~0UL) { -+ bit = ffz(netdev_fc_mask); -+ netdev_fc_slots[bit].stimul = stimul; -+ netdev_fc_slots[bit].dev = dev; -+ set_bit(bit, &netdev_fc_mask); -+ clear_bit(bit, &netdev_fc_xoff); -+ } -+ spin_unlock_irqrestore(&netdev_fc_lock, flags); -+ return bit; -+} -+ -+void netdev_unregister_fc(int bit) -+{ -+ unsigned long flags; -+ -+ spin_lock_irqsave(&netdev_fc_lock, flags); -+ if (bit > 0) { -+ netdev_fc_slots[bit].stimul = NULL; -+ netdev_fc_slots[bit].dev = NULL; -+ clear_bit(bit, &netdev_fc_mask); -+ clear_bit(bit, &netdev_fc_xoff); -+ } -+ spin_unlock_irqrestore(&netdev_fc_lock, flags); -+} -+ -+static void netdev_wakeup(void) -+{ -+ unsigned long xoff; -+ -+ spin_lock(&netdev_fc_lock); -+ xoff = netdev_fc_xoff; -+ netdev_fc_xoff = 0; -+ while (xoff) { -+ int i = ffz(~xoff); -+ xoff &= ~(1<<i); -+ netdev_fc_slots[i].stimul(netdev_fc_slots[i].dev); -+ } -+ spin_unlock(&netdev_fc_lock); -+} -+#endif -+ -+static void get_sample_stats(int cpu) -+{ -+#ifdef RAND_LIE -+ unsigned long rd; -+ int rq; -+#endif -+ int blog = softnet_data[cpu].input_pkt_queue.qlen; -+ int avg_blog = softnet_data[cpu].avg_blog; -+ -+ avg_blog = (avg_blog >> 1)+ (blog >> 1); -+ -+ if (avg_blog > mod_cong) { -+ /* Above moderate congestion levels. */ -+ softnet_data[cpu].cng_level = NET_RX_CN_HIGH; -+#ifdef RAND_LIE -+ rd = net_random(); -+ rq = rd % netdev_max_backlog; -+ if (rq < avg_blog) /* unlucky bastard */ -+ softnet_data[cpu].cng_level = NET_RX_DROP; -+#endif -+ } else if (avg_blog > lo_cong) { -+ softnet_data[cpu].cng_level = NET_RX_CN_MOD; -+#ifdef RAND_LIE -+ rd = net_random(); -+ rq = rd % netdev_max_backlog; -+ if (rq < avg_blog) /* unlucky bastard */ -+ softnet_data[cpu].cng_level = NET_RX_CN_HIGH; -+#endif -+ } else if (avg_blog > no_cong) -+ softnet_data[cpu].cng_level = NET_RX_CN_LOW; -+ else /* no congestion */ -+ softnet_data[cpu].cng_level = NET_RX_SUCCESS; -+ -+ softnet_data[cpu].avg_blog = avg_blog; -+} -+ -+#ifdef OFFLINE_SAMPLE -+static void sample_queue(unsigned long dummy) -+{ -+/* 10 ms 0r 1ms -- i dont care -- JHS */ -+ int next_tick = 1; -+ int cpu = smp_processor_id(); -+ -+ get_sample_stats(cpu); -+ next_tick += jiffies; -+ mod_timer(&samp_timer, next_tick); -+} -+#endif -+ -+ -+/** -+ * netif_rx - post buffer to the network code -+ * @skb: buffer to post -+ * -+ * This function receives a packet from a device driver and queues it for -+ * the upper (protocol) levels to process. It always succeeds. The buffer -+ * may be dropped during processing for congestion control or by the -+ * protocol layers. -+ * -+ * return values: -+ * NET_RX_SUCCESS (no congestion) -+ * NET_RX_CN_LOW (low congestion) -+ * NET_RX_CN_MOD (moderate congestion) -+ * NET_RX_CN_HIGH (high congestion) -+ * NET_RX_DROP (packet was dropped) -+ * -+ * -+ */ -+ -+int netif_rx(struct sk_buff *skb) -+{ -+ int this_cpu = smp_processor_id(); -+ struct softnet_data *queue; -+ unsigned long flags; -+ -+ if (skb->stamp.tv_sec == 0) -+ do_gettimeofday(&skb->stamp); -+ -+ /* The code is rearranged so that the path is the most -+ short when CPU is congested, but is still operating. -+ */ -+ queue = &softnet_data[this_cpu]; -+ -+ local_irq_save(flags); -+ -+ netdev_rx_stat[this_cpu].total++; -+ if (queue->input_pkt_queue.qlen <= netdev_max_backlog) { -+ if (queue->input_pkt_queue.qlen) { -+ if (queue->throttle) -+ goto drop; -+ -+enqueue: -+ dev_hold(skb->dev); -+ __skb_queue_tail(&queue->input_pkt_queue,skb); -+ local_irq_restore(flags); -+#ifndef OFFLINE_SAMPLE -+ get_sample_stats(this_cpu); -+#endif -+ return queue->cng_level; -+ } -+ -+ if (queue->throttle) { -+ queue->throttle = 0; -+#ifdef CONFIG_NET_HW_FLOWCONTROL -+ if (atomic_dec_and_test(&netdev_dropping)) -+ netdev_wakeup(); -+#endif -+ } -+ -+ netif_rx_schedule(&queue->blog_dev); -+ goto enqueue; -+ } -+ -+ if (queue->throttle == 0) { -+ queue->throttle = 1; -+ netdev_rx_stat[this_cpu].throttled++; -+#ifdef CONFIG_NET_HW_FLOWCONTROL -+ atomic_inc(&netdev_dropping); -+#endif -+ } -+ -+drop: -+ netdev_rx_stat[this_cpu].dropped++; -+ local_irq_restore(flags); -+ -+ kfree_skb(skb); -+ return NET_RX_DROP; -+} -+ -+/* Deliver skb to an old protocol, which is not threaded well -+ or which do not understand shared skbs. -+ */ -+static int deliver_to_old_ones(struct packet_type *pt, struct sk_buff *skb, int last) -+{ -+ static spinlock_t net_bh_lock = SPIN_LOCK_UNLOCKED; -+ int ret = NET_RX_DROP; -+ -+ -+ if (!last) { -+ skb = skb_clone(skb, GFP_ATOMIC); -+ if (skb == NULL) -+ return ret; -+ } -+ if (skb_is_nonlinear(skb) && skb_linearize(skb, GFP_ATOMIC) != 0) { -+ kfree_skb(skb); -+ return ret; -+ } -+ -+ /* The assumption (correct one) is that old protocols -+ did not depened on BHs different of NET_BH and TIMER_BH. -+ */ -+ -+ /* Emulate NET_BH with special spinlock */ -+ spin_lock(&net_bh_lock); -+ -+ /* Disable timers and wait for all timers completion */ -+ tasklet_disable(bh_task_vec+TIMER_BH); -+ -+ ret = pt->func(skb, skb->dev, pt); -+ -+ tasklet_hi_enable(bh_task_vec+TIMER_BH); -+ spin_unlock(&net_bh_lock); -+ return ret; -+} -+ -+static __inline__ void skb_bond(struct sk_buff *skb) -+{ -+ struct net_device *dev = skb->dev; -+ -+ if (dev->master) { -+ skb->real_dev = skb->dev; -+ skb->dev = dev->master; -+ } -+} -+ -+static void net_tx_action(struct softirq_action *h) -+{ -+ int cpu = smp_processor_id(); -+ -+ if (softnet_data[cpu].completion_queue) { -+ struct sk_buff *clist; -+ -+ local_irq_disable(); -+ clist = softnet_data[cpu].completion_queue; -+ softnet_data[cpu].completion_queue = NULL; -+ local_irq_enable(); -+ -+ while (clist != NULL) { -+ struct sk_buff *skb = clist; -+ clist = clist->next; -+ -+ BUG_TRAP(atomic_read(&skb->users) == 0); -+ __kfree_skb(skb); -+ } -+ } -+ -+ if (softnet_data[cpu].output_queue) { -+ struct net_device *head; -+ -+ local_irq_disable(); -+ head = softnet_data[cpu].output_queue; -+ softnet_data[cpu].output_queue = NULL; -+ local_irq_enable(); -+ -+ while (head != NULL) { -+ struct net_device *dev = head; -+ head = head->next_sched; -+ -+ smp_mb__before_clear_bit(); -+ clear_bit(__LINK_STATE_SCHED, &dev->state); -+ -+ if (spin_trylock(&dev->queue_lock)) { -+ qdisc_run(dev); -+ spin_unlock(&dev->queue_lock); -+ } else { -+ netif_schedule(dev); -+ } -+ } -+ } -+} -+ -+ -+#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE) -+void (*br_handle_frame_hook)(struct sk_buff *skb) = NULL; -+#endif -+ -+static __inline__ int handle_bridge(struct sk_buff *skb, -+ struct packet_type *pt_prev) -+{ -+ int ret = NET_RX_DROP; -+ -+ if (pt_prev) { -+ if (!pt_prev->data) -+ ret = deliver_to_old_ones(pt_prev, skb, 0); -+ else { -+ atomic_inc(&skb->users); -+ ret = pt_prev->func(skb, skb->dev, pt_prev); -+ } -+ } -+ -+ br_handle_frame_hook(skb); -+ return ret; -+} -+ -+ -+#ifdef CONFIG_NET_DIVERT -+static inline int handle_diverter(struct sk_buff *skb) -+{ -+ /* if diversion is supported on device, then divert */ -+ if (skb->dev->divert && skb->dev->divert->divert) -+ divert_frame(skb); -+ return 0; -+} -+#endif /* CONFIG_NET_DIVERT */ -+ -+int netif_receive_skb(struct sk_buff *skb) -+{ -+ struct packet_type *ptype, *pt_prev; -+ int ret = NET_RX_DROP; -+ unsigned short type; -+ -+ if (skb->stamp.tv_sec == 0) -+ do_gettimeofday(&skb->stamp); -+ -+ skb_bond(skb); -+ -+ netdev_rx_stat[smp_processor_id()].total++; -+ -+#ifdef CONFIG_NET_FASTROUTE -+ if (skb->pkt_type == PACKET_FASTROUTE) { -+ netdev_rx_stat[smp_processor_id()].fastroute_deferred_out++; -+ return dev_queue_xmit(skb); -+ } -+#endif -+ -+ skb->h.raw = skb->nh.raw = skb->data; -+ -+ pt_prev = NULL; -+ for (ptype = ptype_all; ptype; ptype = ptype->next) { -+ if (!ptype->dev || ptype->dev == skb->dev) { -+ if (pt_prev) { -+ if (!pt_prev->data) { -+ ret = deliver_to_old_ones(pt_prev, skb, 0); -+ } else { -+ atomic_inc(&skb->users); -+ ret = pt_prev->func(skb, skb->dev, pt_prev); -+ } -+ } -+ pt_prev = ptype; -+ } -+ } -+ -+#ifdef CONFIG_NET_DIVERT -+ if (skb->dev->divert && skb->dev->divert->divert) -+ ret = handle_diverter(skb); -+#endif /* CONFIG_NET_DIVERT */ -+ -+#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE) -+ if (skb->dev->br_port != NULL && br_handle_frame_hook != NULL && -+ skb->pkt_type != PACKET_LOOPBACK) { -+ return handle_bridge(skb, pt_prev); -+ } -+#endif -+ -+ type = skb->protocol; -+ for (ptype=ptype_base[ntohs(type)&15];ptype;ptype=ptype->next) { -+ if (ptype->type == type && -+ (!ptype->dev || ptype->dev == skb->dev)) { -+ if (pt_prev) { -+ if (!pt_prev->data) { -+ ret = deliver_to_old_ones(pt_prev, skb, 0); -+ } else { -+ atomic_inc(&skb->users); -+ ret = pt_prev->func(skb, skb->dev, pt_prev); -+ } -+ } -+ pt_prev = ptype; -+ } -+ } -+ -+ if (pt_prev) { -+ if (!pt_prev->data) { -+ ret = deliver_to_old_ones(pt_prev, skb, 1); -+ } else { -+ ret = pt_prev->func(skb, skb->dev, pt_prev); -+ } -+ } else { -+ kfree_skb(skb); -+ /* Jamal, now you will not able to escape explaining -+ * me how you were going to use this. :-) -+ */ -+ ret = NET_RX_DROP; -+ } -+ -+ return ret; -+} -+ -+static int process_backlog(struct net_device *backlog_dev, int *budget) -+{ -+ int work = 0; -+ int quota = min(backlog_dev->quota, *budget); -+ int this_cpu = smp_processor_id(); -+ struct softnet_data *queue = &softnet_data[this_cpu]; -+ unsigned long start_time = jiffies; -+ -+ for (;;) { -+ struct sk_buff *skb; -+ struct net_device *dev; -+ -+ local_irq_disable(); -+ skb = __skb_dequeue(&queue->input_pkt_queue); -+ if (skb == NULL) -+ goto job_done; -+ local_irq_enable(); -+ -+ dev = skb->dev; -+ -+ netif_receive_skb(skb); -+ -+ dev_put(dev); -+ -+ work++; -+ -+ if (work >= quota || jiffies - start_time > 1) -+ break; -+ -+#ifdef CONFIG_NET_HW_FLOWCONTROL -+ if (queue->throttle && queue->input_pkt_queue.qlen < no_cong_thresh ) { -+ queue->throttle = 0; -+ if (atomic_dec_and_test(&netdev_dropping)) { -+ netdev_wakeup(); -+ break; -+ } -+ } -+#endif -+ } -+ -+ backlog_dev->quota -= work; -+ *budget -= work; -+ return -1; -+ -+job_done: -+ backlog_dev->quota -= work; -+ *budget -= work; -+ -+ list_del(&backlog_dev->poll_list); -+ smp_mb__before_clear_bit(); -+ netif_poll_enable(backlog_dev); -+ -+ if (queue->throttle) { -+ queue->throttle = 0; -+#ifdef CONFIG_NET_HW_FLOWCONTROL -+ if (atomic_dec_and_test(&netdev_dropping)) -+ netdev_wakeup(); -+#endif -+ } -+ local_irq_enable(); -+ return 0; -+} -+ -+static void net_rx_action(struct softirq_action *h) -+{ -+ int this_cpu = smp_processor_id(); -+ struct softnet_data *queue = &softnet_data[this_cpu]; -+ unsigned long start_time = jiffies; -+ int budget = netdev_max_backlog; -+ -+ br_read_lock(BR_NETPROTO_LOCK); -+ local_irq_disable(); -+ -+ while (!list_empty(&queue->poll_list)) { -+ struct net_device *dev; -+ -+ if (budget <= 0 || jiffies - start_time > 1) -+ goto softnet_break; -+ -+ local_irq_enable(); -+ -+ dev = list_entry(queue->poll_list.next, struct net_device, poll_list); -+ -+ if (dev->quota <= 0 || dev->poll(dev, &budget)) { -+ local_irq_disable(); -+ list_del(&dev->poll_list); -+ list_add_tail(&dev->poll_list, &queue->poll_list); -+ if (dev->quota < 0) -+ dev->quota += dev->weight; -+ else -+ dev->quota = dev->weight; -+ } else { -+ dev_put(dev); -+ local_irq_disable(); -+ } -+ } -+ -+ local_irq_enable(); -+ br_read_unlock(BR_NETPROTO_LOCK); -+ return; -+ -+softnet_break: -+ netdev_rx_stat[this_cpu].time_squeeze++; -+ __cpu_raise_softirq(this_cpu, NET_RX_SOFTIRQ); -+ -+ local_irq_enable(); -+ br_read_unlock(BR_NETPROTO_LOCK); -+} -+ -+static gifconf_func_t * gifconf_list [NPROTO]; -+ -+/** -+ * register_gifconf - register a SIOCGIF handler -+ * @family: Address family -+ * @gifconf: Function handler -+ * -+ * Register protocol dependent address dumping routines. The handler -+ * that is passed must not be freed or reused until it has been replaced -+ * by another handler. -+ */ -+ -+int register_gifconf(unsigned int family, gifconf_func_t * gifconf) -+{ -+ if (family>=NPROTO) -+ return -EINVAL; -+ gifconf_list[family] = gifconf; -+ return 0; -+} -+ -+ -+/* -+ * Map an interface index to its name (SIOCGIFNAME) -+ */ -+ -+/* -+ * We need this ioctl for efficient implementation of the -+ * if_indextoname() function required by the IPv6 API. Without -+ * it, we would have to search all the interfaces to find a -+ * match. --pb -+ */ -+ -+static int dev_ifname(struct ifreq *arg) -+{ -+ struct net_device *dev; -+ struct ifreq ifr; -+ -+ /* -+ * Fetch the caller's info block. -+ */ -+ -+ if (copy_from_user(&ifr, arg, sizeof(struct ifreq))) -+ return -EFAULT; -+ -+ read_lock(&dev_base_lock); -+ dev = __dev_get_by_index(ifr.ifr_ifindex); -+ if (!dev) { -+ read_unlock(&dev_base_lock); -+ return -ENODEV; -+ } -+ -+ strcpy(ifr.ifr_name, dev->name); -+ read_unlock(&dev_base_lock); -+ -+ if (copy_to_user(arg, &ifr, sizeof(struct ifreq))) -+ return -EFAULT; -+ return 0; -+} -+ -+/* -+ * Perform a SIOCGIFCONF call. This structure will change -+ * size eventually, and there is nothing I can do about it. -+ * Thus we will need a 'compatibility mode'. -+ */ -+ -+static int dev_ifconf(char *arg) -+{ -+ struct ifconf ifc; -+ struct net_device *dev; -+ char *pos; -+ int len; -+ int total; -+ int i; -+ -+ /* -+ * Fetch the caller's info block. -+ */ -+ -+ if (copy_from_user(&ifc, arg, sizeof(struct ifconf))) -+ return -EFAULT; -+ -+ pos = ifc.ifc_buf; -+ len = ifc.ifc_len; -+ -+ /* -+ * Loop over the interfaces, and write an info block for each. -+ */ -+ -+ total = 0; -+ for (dev = dev_base; dev != NULL; dev = dev->next) { -+ for (i=0; i<NPROTO; i++) { -+ if (gifconf_list[i]) { -+ int done; -+ if (pos==NULL) { -+ done = gifconf_list[i](dev, NULL, 0); -+ } else { -+ done = gifconf_list[i](dev, pos+total, len-total); -+ } -+ if (done<0) { -+ return -EFAULT; -+ } -+ total += done; -+ } -+ } -+ } -+ -+ /* -+ * All done. Write the updated control block back to the caller. -+ */ -+ ifc.ifc_len = total; -+ -+ if (copy_to_user(arg, &ifc, sizeof(struct ifconf))) -+ return -EFAULT; -+ -+ /* -+ * Both BSD and Solaris return 0 here, so we do too. -+ */ -+ return 0; -+} -+ -+/* -+ * This is invoked by the /proc filesystem handler to display a device -+ * in detail. -+ */ -+ -+#ifdef CONFIG_PROC_FS -+ -+static int sprintf_stats(char *buffer, struct net_device *dev) -+{ -+ struct net_device_stats *stats = (dev->get_stats ? dev->get_stats(dev): NULL); -+ int size; -+ -+ if (stats) -+ size = sprintf(buffer, "%6s:%8lu %7lu %4lu %4lu %4lu %5lu %10lu %9lu %8lu %7lu %4lu %4lu %4lu %5lu %7lu %10lu\n", -+ dev->name, -+ stats->rx_bytes, -+ stats->rx_packets, stats->rx_errors, -+ stats->rx_dropped + stats->rx_missed_errors, -+ stats->rx_fifo_errors, -+ stats->rx_length_errors + stats->rx_over_errors -+ + stats->rx_crc_errors + stats->rx_frame_errors, -+ stats->rx_compressed, stats->multicast, -+ stats->tx_bytes, -+ stats->tx_packets, stats->tx_errors, stats->tx_dropped, -+ stats->tx_fifo_errors, stats->collisions, -+ stats->tx_carrier_errors + stats->tx_aborted_errors -+ + stats->tx_window_errors + stats->tx_heartbeat_errors, -+ stats->tx_compressed); -+ else -+ size = sprintf(buffer, "%6s: No statistics available.\n", dev->name); -+ -+ return size; -+} -+ -+/* -+ * Called from the PROCfs module. This now uses the new arbitrary sized /proc/net interface -+ * to create /proc/net/dev -+ */ -+ -+static int dev_get_info(char *buffer, char **start, off_t offset, int length) -+{ -+ int len = 0; -+ off_t begin = 0; -+ off_t pos = 0; -+ int size; -+ struct net_device *dev; -+ -+ -+ size = sprintf(buffer, -+ "Inter-| Receive | Transmit\n" -+ " face |bytes packets errs drop fifo frame compressed multicast|bytes packets errs drop fifo colls carrier compressed\n"); -+ -+ pos += size; -+ len += size; -+ -+ -+ read_lock(&dev_base_lock); -+ for (dev = dev_base; dev != NULL; dev = dev->next) { -+ size = sprintf_stats(buffer+len, dev); -+ len += size; -+ pos = begin + len; -+ -+ if (pos < offset) { -+ len = 0; -+ begin = pos; -+ } -+ if (pos > offset + length) -+ break; -+ } -+ read_unlock(&dev_base_lock); -+ -+ *start = buffer + (offset - begin); /* Start of wanted data */ -+ len -= (offset - begin); /* Start slop */ -+ if (len > length) -+ len = length; /* Ending slop */ -+ if (len < 0) -+ len = 0; -+ return len; -+} -+ -+static int dev_proc_stats(char *buffer, char **start, off_t offset, -+ int length, int *eof, void *data) -+{ -+ int i, lcpu; -+ int len=0; -+ -+ for (lcpu=0; lcpu<smp_num_cpus; lcpu++) { -+ i = cpu_logical_map(lcpu); -+ len += sprintf(buffer+len, "%08x %08x %08x %08x %08x %08x %08x %08x %08x\n", -+ netdev_rx_stat[i].total, -+ netdev_rx_stat[i].dropped, -+ netdev_rx_stat[i].time_squeeze, -+ netdev_rx_stat[i].throttled, -+ netdev_rx_stat[i].fastroute_hit, -+ netdev_rx_stat[i].fastroute_success, -+ netdev_rx_stat[i].fastroute_defer, -+ netdev_rx_stat[i].fastroute_deferred_out, -+#if 0 -+ netdev_rx_stat[i].fastroute_latency_reduction -+#else -+ netdev_rx_stat[i].cpu_collision -+#endif -+ ); -+ } -+ -+ len -= offset; -+ -+ if (len > length) -+ len = length; -+ if (len < 0) -+ len = 0; -+ -+ *start = buffer + offset; -+ *eof = 1; -+ -+ return len; -+} -+ -+#endif /* CONFIG_PROC_FS */ -+ -+ -+/** -+ * netdev_set_master - set up master/slave pair -+ * @slave: slave device -+ * @master: new master device -+ * -+ * Changes the master device of the slave. Pass %NULL to break the -+ * bonding. The caller must hold the RTNL semaphore. On a failure -+ * a negative errno code is returned. On success the reference counts -+ * are adjusted, %RTM_NEWLINK is sent to the routing socket and the -+ * function returns zero. -+ */ -+ -+int netdev_set_master(struct net_device *slave, struct net_device *master) -+{ -+ struct net_device *old = slave->master; -+ -+ ASSERT_RTNL(); -+ -+ if (master) { -+ if (old) -+ return -EBUSY; -+ dev_hold(master); -+ } -+ -+ br_write_lock_bh(BR_NETPROTO_LOCK); -+ slave->master = master; -+ br_write_unlock_bh(BR_NETPROTO_LOCK); -+ -+ if (old) -+ dev_put(old); -+ -+ if (master) -+ slave->flags |= IFF_SLAVE; -+ else -+ slave->flags &= ~IFF_SLAVE; -+ -+ rtmsg_ifinfo(RTM_NEWLINK, slave, IFF_SLAVE); -+ return 0; -+} -+ -+/** -+ * dev_set_promiscuity - update promiscuity count on a device -+ * @dev: device -+ * @inc: modifier -+ * -+ * Add or remove promsicuity from a device. While the count in the device -+ * remains above zero the interface remains promiscuous. Once it hits zero -+ * the device reverts back to normal filtering operation. A negative inc -+ * value is used to drop promiscuity on the device. -+ */ -+ -+void dev_set_promiscuity(struct net_device *dev, int inc) -+{ -+ unsigned short old_flags = dev->flags; -+ -+ dev->flags |= IFF_PROMISC; -+ if ((dev->promiscuity += inc) == 0) -+ dev->flags &= ~IFF_PROMISC; -+ if (dev->flags^old_flags) { -+#ifdef CONFIG_NET_FASTROUTE -+ if (dev->flags&IFF_PROMISC) { -+ netdev_fastroute_obstacles++; -+ dev_clear_fastroute(dev); -+ } else -+ netdev_fastroute_obstacles--; -+#endif -+ dev_mc_upload(dev); -+ printk(KERN_INFO "device %s %s promiscuous mode\n", -+ dev->name, (dev->flags&IFF_PROMISC) ? "entered" : "left"); -+ } -+} -+ -+/** -+ * dev_set_allmulti - update allmulti count on a device -+ * @dev: device -+ * @inc: modifier -+ * -+ * Add or remove reception of all multicast frames to a device. While the -+ * count in the device remains above zero the interface remains listening -+ * to all interfaces. Once it hits zero the device reverts back to normal -+ * filtering operation. A negative @inc value is used to drop the counter -+ * when releasing a resource needing all multicasts. -+ */ -+ -+void dev_set_allmulti(struct net_device *dev, int inc) -+{ -+ unsigned short old_flags = dev->flags; -+ -+ dev->flags |= IFF_ALLMULTI; -+ if ((dev->allmulti += inc) == 0) -+ dev->flags &= ~IFF_ALLMULTI; -+ if (dev->flags^old_flags) -+ dev_mc_upload(dev); -+} -+ -+int dev_change_flags(struct net_device *dev, unsigned flags) -+{ -+ int ret; -+ int old_flags = dev->flags; -+ -+ /* -+ * Set the flags on our device. -+ */ -+ -+ dev->flags = (flags & (IFF_DEBUG|IFF_NOTRAILERS|IFF_NOARP|IFF_DYNAMIC| -+ IFF_MULTICAST|IFF_PORTSEL|IFF_AUTOMEDIA)) | -+ (dev->flags & (IFF_UP|IFF_VOLATILE|IFF_PROMISC|IFF_ALLMULTI)); -+ -+ /* -+ * Load in the correct multicast list now the flags have changed. -+ */ -+ -+ dev_mc_upload(dev); -+ -+ /* -+ * Have we downed the interface. We handle IFF_UP ourselves -+ * according to user attempts to set it, rather than blindly -+ * setting it. -+ */ -+ -+ ret = 0; -+ if ((old_flags^flags)&IFF_UP) /* Bit is different ? */ -+ { -+ ret = ((old_flags & IFF_UP) ? dev_close : dev_open)(dev); -+ -+ if (ret == 0) -+ dev_mc_upload(dev); -+ } -+ -+ if (dev->flags&IFF_UP && -+ ((old_flags^dev->flags)&~(IFF_UP|IFF_PROMISC|IFF_ALLMULTI|IFF_VOLATILE))) -+ notifier_call_chain(&netdev_chain, NETDEV_CHANGE, dev); -+ -+ if ((flags^dev->gflags)&IFF_PROMISC) { -+ int inc = (flags&IFF_PROMISC) ? +1 : -1; -+ dev->gflags ^= IFF_PROMISC; -+ dev_set_promiscuity(dev, inc); -+ } -+ -+ /* NOTE: order of synchronization of IFF_PROMISC and IFF_ALLMULTI -+ is important. Some (broken) drivers set IFF_PROMISC, when -+ IFF_ALLMULTI is requested not asking us and not reporting. -+ */ -+ if ((flags^dev->gflags)&IFF_ALLMULTI) { -+ int inc = (flags&IFF_ALLMULTI) ? +1 : -1; -+ dev->gflags ^= IFF_ALLMULTI; -+ dev_set_allmulti(dev, inc); -+ } -+ -+ if (old_flags^dev->flags) -+ rtmsg_ifinfo(RTM_NEWLINK, dev, old_flags^dev->flags); -+ -+ return ret; -+} -+ -+/* -+ * Perform the SIOCxIFxxx calls. -+ */ -+ -+static int dev_ifsioc(struct ifreq *ifr, unsigned int cmd) -+{ -+ struct net_device *dev; -+ int err; -+ -+ if ((dev = __dev_get_by_name(ifr->ifr_name)) == NULL) -+ return -ENODEV; -+ -+ switch(cmd) -+ { -+ case SIOCGIFFLAGS: /* Get interface flags */ -+ ifr->ifr_flags = (dev->flags&~(IFF_PROMISC|IFF_ALLMULTI|IFF_RUNNING)) -+ |(dev->gflags&(IFF_PROMISC|IFF_ALLMULTI)); -+ if (netif_running(dev) && netif_carrier_ok(dev)) -+ ifr->ifr_flags |= IFF_RUNNING; -+ return 0; -+ -+ case SIOCSIFFLAGS: /* Set interface flags */ -+ return dev_change_flags(dev, ifr->ifr_flags); -+ -+ case SIOCGIFMETRIC: /* Get the metric on the interface (currently unused) */ -+ ifr->ifr_metric = 0; -+ return 0; -+ -+ case SIOCSIFMETRIC: /* Set the metric on the interface (currently unused) */ -+ return -EOPNOTSUPP; -+ -+ case SIOCGIFMTU: /* Get the MTU of a device */ -+ ifr->ifr_mtu = dev->mtu; -+ return 0; -+ -+ case SIOCSIFMTU: /* Set the MTU of a device */ -+ if (ifr->ifr_mtu == dev->mtu) -+ return 0; -+ -+ /* -+ * MTU must be positive. -+ */ -+ -+ if (ifr->ifr_mtu<0) -+ return -EINVAL; -+ -+ if (!netif_device_present(dev)) -+ return -ENODEV; -+ -+ if (dev->change_mtu) -+ err = dev->change_mtu(dev, ifr->ifr_mtu); -+ else { -+ dev->mtu = ifr->ifr_mtu; -+ err = 0; -+ } -+ if (!err && dev->flags&IFF_UP) -+ notifier_call_chain(&netdev_chain, NETDEV_CHANGEMTU, dev); -+ return err; -+ -+ case SIOCGIFHWADDR: -+ memcpy(ifr->ifr_hwaddr.sa_data,dev->dev_addr, MAX_ADDR_LEN); -+ ifr->ifr_hwaddr.sa_family=dev->type; -+ return 0; -+ -+ case SIOCSIFHWADDR: -+ if (dev->set_mac_address == NULL) -+ return -EOPNOTSUPP; -+ if (ifr->ifr_hwaddr.sa_family!=dev->type) -+ return -EINVAL; -+ if (!netif_device_present(dev)) -+ return -ENODEV; -+ err = dev->set_mac_address(dev, &ifr->ifr_hwaddr); -+ if (!err) -+ notifier_call_chain(&netdev_chain, NETDEV_CHANGEADDR, dev); -+ return err; -+ -+ case SIOCSIFHWBROADCAST: -+ if (ifr->ifr_hwaddr.sa_family!=dev->type) -+ return -EINVAL; -+ memcpy(dev->broadcast, ifr->ifr_hwaddr.sa_data, MAX_ADDR_LEN); -+ notifier_call_chain(&netdev_chain, NETDEV_CHANGEADDR, dev); -+ return 0; -+ -+ case SIOCGIFMAP: -+ ifr->ifr_map.mem_start=dev->mem_start; -+ ifr->ifr_map.mem_end=dev->mem_end; -+ ifr->ifr_map.base_addr=dev->base_addr; -+ ifr->ifr_map.irq=dev->irq; -+ ifr->ifr_map.dma=dev->dma; -+ ifr->ifr_map.port=dev->if_port; -+ return 0; -+ -+ case SIOCSIFMAP: -+ if (dev->set_config) { -+ if (!netif_device_present(dev)) -+ return -ENODEV; -+ return dev->set_config(dev,&ifr->ifr_map); -+ } -+ return -EOPNOTSUPP; -+ -+ case SIOCADDMULTI: -+ if (dev->set_multicast_list == NULL || -+ ifr->ifr_hwaddr.sa_family != AF_UNSPEC) -+ return -EINVAL; -+ if (!netif_device_present(dev)) -+ return -ENODEV; -+ dev_mc_add(dev,ifr->ifr_hwaddr.sa_data, dev->addr_len, 1); -+ return 0; -+ -+ case SIOCDELMULTI: -+ if (dev->set_multicast_list == NULL || -+ ifr->ifr_hwaddr.sa_family!=AF_UNSPEC) -+ return -EINVAL; -+ if (!netif_device_present(dev)) -+ return -ENODEV; -+ dev_mc_delete(dev,ifr->ifr_hwaddr.sa_data,dev->addr_len, 1); -+ return 0; -+ -+ case SIOCGIFINDEX: -+ ifr->ifr_ifindex = dev->ifindex; -+ return 0; -+ -+ case SIOCGIFTXQLEN: -+ ifr->ifr_qlen = dev->tx_queue_len; -+ return 0; -+ -+ case SIOCSIFTXQLEN: -+ if (ifr->ifr_qlen<0) -+ return -EINVAL; -+ dev->tx_queue_len = ifr->ifr_qlen; -+ return 0; -+ -+ case SIOCSIFNAME: -+ if (dev->flags&IFF_UP) -+ return -EBUSY; -+ /* Check if name contains a wildcard */ -+ if (strchr(ifr->ifr_newname, '%')) { -+ char format[IFNAMSIZ + 1]; -+ int ret; -+ memcpy(format, ifr->ifr_newname, IFNAMSIZ); -+ format[IFNAMSIZ-1] = 0; -+ /* Find a free name based on format. -+ * dev_alloc_name() replaces "%d" with at max -+ * 2 digits, so no name overflow. - Jean II */ -+ ret = dev_alloc_name(dev, format); -+ if (ret < 0) -+ return ret; -+ /* Copy the new name back to caller. */ -+ strncpy(ifr->ifr_newname, dev->name, IFNAMSIZ); -+ } else { -+ if (__dev_get_by_name(ifr->ifr_newname)) -+ return -EEXIST; -+ memcpy(dev->name, ifr->ifr_newname, IFNAMSIZ); -+ dev->name[IFNAMSIZ-1] = 0; -+ } -+ notifier_call_chain(&netdev_chain, NETDEV_CHANGENAME, dev); -+ return 0; -+ -+ /* -+ * Unknown or private ioctl -+ */ -+ -+ default: -+ if ((cmd >= SIOCDEVPRIVATE && -+ cmd <= SIOCDEVPRIVATE + 15) || -+ cmd == SIOCBONDENSLAVE || -+ cmd == SIOCBONDRELEASE || -+ cmd == SIOCBONDSETHWADDR || -+ cmd == SIOCBONDSLAVEINFOQUERY || -+ cmd == SIOCBONDINFOQUERY || -+ cmd == SIOCBONDCHANGEACTIVE || -+ cmd == SIOCGMIIPHY || -+ cmd == SIOCGMIIREG || -+ cmd == SIOCSMIIREG || -+ cmd == SIOCWANDEV) { -+ if (dev->do_ioctl) { -+ if (!netif_device_present(dev)) -+ return -ENODEV; -+ return dev->do_ioctl(dev, ifr, cmd); -+ } -+ return -EOPNOTSUPP; -+ } -+ -+ } -+ return -EINVAL; -+} -+ -+/* -+ * This function handles all "interface"-type I/O control requests. The actual -+ * 'doing' part of this is dev_ifsioc above. -+ */ -+ -+/** -+ * dev_ioctl - network device ioctl -+ * @cmd: command to issue -+ * @arg: pointer to a struct ifreq in user space -+ * -+ * Issue ioctl functions to devices. This is normally called by the -+ * user space syscall interfaces but can sometimes be useful for -+ * other purposes. The return value is the return from the syscall if -+ * positive or a negative errno code on error. -+ */ -+ -+int dev_ioctl(unsigned int cmd, void *arg) -+{ -+ struct ifreq ifr; -+ int ret; -+ char *colon; -+ -+ /* One special case: SIOCGIFCONF takes ifconf argument -+ and requires shared lock, because it sleeps writing -+ to user space. -+ */ -+ -+ if (cmd == SIOCGIFCONF) { -+ rtnl_shlock(); -+ ret = dev_ifconf((char *) arg); -+ rtnl_shunlock(); -+ return ret; -+ } -+ if (cmd == SIOCGIFNAME) { -+ return dev_ifname((struct ifreq *)arg); -+ } -+ -+ if (copy_from_user(&ifr, arg, sizeof(struct ifreq))) -+ return -EFAULT; -+ -+ ifr.ifr_name[IFNAMSIZ-1] = 0; -+ -+ colon = strchr(ifr.ifr_name, ':'); -+ if (colon) -+ *colon = 0; -+ -+ /* -+ * See which interface the caller is talking about. -+ */ -+ -+ switch(cmd) -+ { -+ /* -+ * These ioctl calls: -+ * - can be done by all. -+ * - atomic and do not require locking. -+ * - return a value -+ */ -+ -+ case SIOCGIFFLAGS: -+ case SIOCGIFMETRIC: -+ case SIOCGIFMTU: -+ case SIOCGIFHWADDR: -+ case SIOCGIFSLAVE: -+ case SIOCGIFMAP: -+ case SIOCGIFINDEX: -+ case SIOCGIFTXQLEN: -+ dev_load(ifr.ifr_name); -+ read_lock(&dev_base_lock); -+ ret = dev_ifsioc(&ifr, cmd); -+ read_unlock(&dev_base_lock); -+ if (!ret) { -+ if (colon) -+ *colon = ':'; -+ if (copy_to_user(arg, &ifr, sizeof(struct ifreq))) -+ return -EFAULT; -+ } -+ return ret; -+ -+ case SIOCETHTOOL: -+ dev_load(ifr.ifr_name); -+ rtnl_lock(); -+ ret = dev_ethtool(&ifr); -+ rtnl_unlock(); -+ if (!ret) { -+ if (colon) -+ *colon = ':'; -+ if (copy_to_user(arg, &ifr, -+ sizeof(struct ifreq))) -+ ret = -EFAULT; -+ } -+ return ret; -+ -+ /* -+ * These ioctl calls: -+ * - require superuser power. -+ * - require strict serialization. -+ * - return a value -+ */ -+ -+ case SIOCSIFNAME: -+ case SIOCGMIIPHY: -+ case SIOCGMIIREG: -+ if (!capable(CAP_NET_ADMIN)) -+ return -EPERM; -+ dev_load(ifr.ifr_name); -+ dev_probe_lock(); -+ rtnl_lock(); -+ ret = dev_ifsioc(&ifr, cmd); -+ rtnl_unlock(); -+ dev_probe_unlock(); -+ if (!ret) { -+ if (colon) -+ *colon = ':'; -+ if (copy_to_user(arg, &ifr, sizeof(struct ifreq))) -+ return -EFAULT; -+ } -+ return ret; -+ -+ /* -+ * These ioctl calls: -+ * - require superuser power. -+ * - require strict serialization. -+ * - do not return a value -+ */ -+ -+ case SIOCSIFFLAGS: -+ case SIOCSIFMETRIC: -+ case SIOCSIFMTU: -+ case SIOCSIFMAP: -+ case SIOCSIFHWADDR: -+ case SIOCSIFSLAVE: -+ case SIOCADDMULTI: -+ case SIOCDELMULTI: -+ case SIOCSIFHWBROADCAST: -+ case SIOCSIFTXQLEN: -+ case SIOCSMIIREG: -+ case SIOCBONDENSLAVE: -+ case SIOCBONDRELEASE: -+ case SIOCBONDSETHWADDR: -+ case SIOCBONDSLAVEINFOQUERY: -+ case SIOCBONDINFOQUERY: -+ case SIOCBONDCHANGEACTIVE: -+ if (!capable(CAP_NET_ADMIN)) -+ return -EPERM; -+ dev_load(ifr.ifr_name); -+ dev_probe_lock(); -+ rtnl_lock(); -+ ret = dev_ifsioc(&ifr, cmd); -+ rtnl_unlock(); -+ dev_probe_unlock(); -+ return ret; -+ -+ case SIOCGIFMEM: -+ /* Get the per device memory space. We can add this but currently -+ do not support it */ -+ case SIOCSIFMEM: -+ /* Set the per device memory buffer space. Not applicable in our case */ -+ case SIOCSIFLINK: -+ return -EINVAL; -+ -+ /* -+ * Unknown or private ioctl. -+ */ -+ -+ default: -+ if (cmd == SIOCWANDEV || -+ (cmd >= SIOCDEVPRIVATE && -+ cmd <= SIOCDEVPRIVATE + 15)) { -+ dev_load(ifr.ifr_name); -+ dev_probe_lock(); -+ rtnl_lock(); -+ ret = dev_ifsioc(&ifr, cmd); -+ rtnl_unlock(); -+ dev_probe_unlock(); -+ if (!ret && copy_to_user(arg, &ifr, sizeof(struct ifreq))) -+ return -EFAULT; -+ return ret; -+ } -+#ifdef WIRELESS_EXT -+ /* Take care of Wireless Extensions */ -+ if (cmd >= SIOCIWFIRST && cmd <= SIOCIWLAST) { -+ /* If command is `set a parameter', or -+ * `get the encoding parameters', check if -+ * the user has the right to do it */ -+ if (IW_IS_SET(cmd) || (cmd == SIOCGIWENCODE)) { -+ if(!capable(CAP_NET_ADMIN)) -+ return -EPERM; -+ } -+ dev_load(ifr.ifr_name); -+ rtnl_lock(); -+ /* Follow me in net/core/wireless.c */ -+ ret = wireless_process_ioctl(&ifr, cmd); -+ rtnl_unlock(); -+ if (!ret && IW_IS_GET(cmd) && -+ copy_to_user(arg, &ifr, sizeof(struct ifreq))) -+ return -EFAULT; -+ return ret; -+ } -+#endif /* WIRELESS_EXT */ -+ return -EINVAL; -+ } -+} -+ -+ -+/** -+ * dev_new_index - allocate an ifindex -+ * -+ * Returns a suitable unique value for a new device interface -+ * number. The caller must hold the rtnl semaphore or the -+ * dev_base_lock to be sure it remains unique. -+ */ -+ -+int dev_new_index(void) -+{ -+ static int ifindex; -+ for (;;) { -+ if (++ifindex <= 0) -+ ifindex=1; -+ if (__dev_get_by_index(ifindex) == NULL) -+ return ifindex; -+ } -+} -+ -+static int dev_boot_phase = 1; -+ -+/** -+ * register_netdevice - register a network device -+ * @dev: device to register -+ * -+ * Take a completed network device structure and add it to the kernel -+ * interfaces. A %NETDEV_REGISTER message is sent to the netdev notifier -+ * chain. 0 is returned on success. A negative errno code is returned -+ * on a failure to set up the device, or if the name is a duplicate. -+ * -+ * Callers must hold the rtnl semaphore. See the comment at the -+ * end of Space.c for details about the locking. You may want -+ * register_netdev() instead of this. -+ * -+ * BUGS: -+ * The locking appears insufficient to guarantee two parallel registers -+ * will not get the same name. -+ */ -+ -+int net_dev_init(void); -+ -+int register_netdevice(struct net_device *dev) -+{ -+ struct net_device *d, **dp; -+#ifdef CONFIG_NET_DIVERT -+ int ret; -+#endif -+ -+ spin_lock_init(&dev->queue_lock); -+ spin_lock_init(&dev->xmit_lock); -+ dev->xmit_lock_owner = -1; -+#ifdef CONFIG_NET_FASTROUTE -+ dev->fastpath_lock=RW_LOCK_UNLOCKED; -+#endif -+ -+ if (dev_boot_phase) -+ net_dev_init(); -+ -+#ifdef CONFIG_NET_DIVERT -+ ret = alloc_divert_blk(dev); -+ if (ret) -+ return ret; -+#endif /* CONFIG_NET_DIVERT */ -+ -+ dev->iflink = -1; -+ -+ /* Init, if this function is available */ -+ if (dev->init && dev->init(dev) != 0) { -+#ifdef CONFIG_NET_DIVERT -+ free_divert_blk(dev); -+#endif -+ return -EIO; -+ } -+ -+ dev->ifindex = dev_new_index(); -+ if (dev->iflink == -1) -+ dev->iflink = dev->ifindex; -+ -+ /* Check for existence, and append to tail of chain */ -+ for (dp=&dev_base; (d=*dp) != NULL; dp=&d->next) { -+ if (d == dev || strcmp(d->name, dev->name) == 0) { -+#ifdef CONFIG_NET_DIVERT -+ free_divert_blk(dev); -+#endif -+ return -EEXIST; -+ } -+ } -+ -+ /* Fix illegal SG+CSUM combinations. */ -+ if ((dev->features & NETIF_F_SG) && -+ !(dev->features & (NETIF_F_IP_CSUM | -+ NETIF_F_NO_CSUM | -+ NETIF_F_HW_CSUM))) { -+ printk("%s: Dropping NETIF_F_SG since no checksum feature.\n", -+ dev->name); -+ dev->features &= ~NETIF_F_SG; -+ } -+ -+ /* -+ * nil rebuild_header routine, -+ * that should be never called and used as just bug trap. -+ */ -+ -+ if (dev->rebuild_header == NULL) -+ dev->rebuild_header = default_rebuild_header; -+ -+ /* -+ * Default initial state at registry is that the -+ * device is present. -+ */ -+ -+ set_bit(__LINK_STATE_PRESENT, &dev->state); -+ -+ dev->next = NULL; -+ dev_init_scheduler(dev); -+ write_lock_bh(&dev_base_lock); -+ *dp = dev; -+ dev_hold(dev); -+ dev->deadbeaf = 0; -+ write_unlock_bh(&dev_base_lock); -+ -+ /* Notify protocols, that a new device appeared. */ -+ notifier_call_chain(&netdev_chain, NETDEV_REGISTER, dev); -+ -+ net_run_sbin_hotplug(dev, "register"); -+ -+ return 0; -+} -+ -+/** -+ * netdev_finish_unregister - complete unregistration -+ * @dev: device -+ * -+ * Destroy and free a dead device. A value of zero is returned on -+ * success. -+ */ -+ -+int netdev_finish_unregister(struct net_device *dev) -+{ -+ BUG_TRAP(dev->ip_ptr==NULL); -+ BUG_TRAP(dev->ip6_ptr==NULL); -+ BUG_TRAP(dev->dn_ptr==NULL); -+ -+ if (!dev->deadbeaf) { -+ printk(KERN_ERR "Freeing alive device %p, %s\n", dev, dev->name); -+ return 0; -+ } -+#ifdef NET_REFCNT_DEBUG -+ printk(KERN_DEBUG "netdev_finish_unregister: %s%s.\n", dev->name, -+ (dev->features & NETIF_F_DYNALLOC)?"":", old style"); -+#endif -+ if (dev->destructor) -+ dev->destructor(dev); -+ if (dev->features & NETIF_F_DYNALLOC) -+ kfree(dev); -+ return 0; -+} -+ -+/** -+ * unregister_netdevice - remove device from the kernel -+ * @dev: device -+ * -+ * This function shuts down a device interface and removes it -+ * from the kernel tables. On success 0 is returned, on a failure -+ * a negative errno code is returned. -+ * -+ * Callers must hold the rtnl semaphore. See the comment at the -+ * end of Space.c for details about the locking. You may want -+ * unregister_netdev() instead of this. -+ */ -+ -+int unregister_netdevice(struct net_device *dev) -+{ -+ unsigned long now, warning_time; -+ struct net_device *d, **dp; -+ -+ /* If device is running, close it first. */ -+ if (dev->flags & IFF_UP) -+ dev_close(dev); -+ -+ BUG_TRAP(dev->deadbeaf==0); -+ dev->deadbeaf = 1; -+ -+ /* And unlink it from device chain. */ -+ for (dp = &dev_base; (d=*dp) != NULL; dp=&d->next) { -+ if (d == dev) { -+ write_lock_bh(&dev_base_lock); -+ *dp = d->next; -+ write_unlock_bh(&dev_base_lock); -+ break; -+ } -+ } -+ if (d == NULL) { -+ printk(KERN_DEBUG "unregister_netdevice: device %s/%p never was registered\n", dev->name, dev); -+ return -ENODEV; -+ } -+ -+ /* Synchronize to net_rx_action. */ -+ br_write_lock_bh(BR_NETPROTO_LOCK); -+ br_write_unlock_bh(BR_NETPROTO_LOCK); -+ -+ if (dev_boot_phase == 0) { -+#ifdef CONFIG_NET_FASTROUTE -+ dev_clear_fastroute(dev); -+#endif -+ -+ /* Shutdown queueing discipline. */ -+ dev_shutdown(dev); -+ -+ net_run_sbin_hotplug(dev, "unregister"); -+ -+ /* Notify protocols, that we are about to destroy -+ this device. They should clean all the things. -+ */ -+ notifier_call_chain(&netdev_chain, NETDEV_UNREGISTER, dev); -+ -+ /* -+ * Flush the multicast chain -+ */ -+ dev_mc_discard(dev); -+ } -+ -+ if (dev->uninit) -+ dev->uninit(dev); -+ -+ /* Notifier chain MUST detach us from master device. */ -+ BUG_TRAP(dev->master==NULL); -+ -+#ifdef CONFIG_NET_DIVERT -+ free_divert_blk(dev); -+#endif -+ -+ if (dev->features & NETIF_F_DYNALLOC) { -+#ifdef NET_REFCNT_DEBUG -+ if (atomic_read(&dev->refcnt) != 1) -+ printk(KERN_DEBUG "unregister_netdevice: holding %s refcnt=%d\n", dev->name, atomic_read(&dev->refcnt)-1); -+#endif -+ dev_put(dev); -+ return 0; -+ } -+ -+ /* Last reference is our one */ -+ if (atomic_read(&dev->refcnt) == 1) { -+ dev_put(dev); -+ return 0; -+ } -+ -+#ifdef NET_REFCNT_DEBUG -+ printk("unregister_netdevice: waiting %s refcnt=%d\n", dev->name, atomic_read(&dev->refcnt)); -+#endif -+ -+ /* EXPLANATION. If dev->refcnt is not now 1 (our own reference) -+ it means that someone in the kernel still has a reference -+ to this device and we cannot release it. -+ -+ "New style" devices have destructors, hence we can return from this -+ function and destructor will do all the work later. As of kernel 2.4.0 -+ there are very few "New Style" devices. -+ -+ "Old style" devices expect that the device is free of any references -+ upon exit from this function. -+ We cannot return from this function until all such references have -+ fallen away. This is because the caller of this function will probably -+ immediately kfree(*dev) and then be unloaded via sys_delete_module. -+ -+ So, we linger until all references fall away. The duration of the -+ linger is basically unbounded! It is driven by, for example, the -+ current setting of sysctl_ipfrag_time. -+ -+ After 1 second, we start to rebroadcast unregister notifications -+ in hope that careless clients will release the device. -+ -+ */ -+ -+ now = warning_time = jiffies; -+ while (atomic_read(&dev->refcnt) != 1) { -+ if ((jiffies - now) > 1*HZ) { -+ /* Rebroadcast unregister notification */ -+ notifier_call_chain(&netdev_chain, NETDEV_UNREGISTER, dev); -+ } -+ current->state = TASK_INTERRUPTIBLE; -+ schedule_timeout(HZ/4); -+ current->state = TASK_RUNNING; -+ if ((jiffies - warning_time) > 10*HZ) { -+ printk(KERN_EMERG "unregister_netdevice: waiting for %s to " -+ "become free. Usage count = %d\n", -+ dev->name, atomic_read(&dev->refcnt)); -+ warning_time = jiffies; -+ } -+ } -+ dev_put(dev); -+ return 0; -+} -+ -+ -+/* -+ * Initialize the DEV module. At boot time this walks the device list and -+ * unhooks any devices that fail to initialise (normally hardware not -+ * present) and leaves us with a valid list of present and active devices. -+ * -+ */ -+ -+extern void net_device_init(void); -+extern void ip_auto_config(void); -+struct proc_dir_entry *proc_net_drivers; -+#ifdef CONFIG_NET_DIVERT -+extern void dv_init(void); -+#endif /* CONFIG_NET_DIVERT */ -+ -+ -+/* -+ * Callers must hold the rtnl semaphore. See the comment at the -+ * end of Space.c for details about the locking. -+ */ -+int __init net_dev_init(void) -+{ -+ struct net_device *dev, **dp; -+ int i; -+ -+ if (!dev_boot_phase) -+ return 0; -+ -+ -+#ifdef CONFIG_NET_DIVERT -+ dv_init(); -+#endif /* CONFIG_NET_DIVERT */ -+ -+ /* -+ * Initialise the packet receive queues. -+ */ -+ -+ for (i = 0; i < NR_CPUS; i++) { -+ struct softnet_data *queue; -+ -+ queue = &softnet_data[i]; -+ skb_queue_head_init(&queue->input_pkt_queue); -+ queue->throttle = 0; -+ queue->cng_level = 0; -+ queue->avg_blog = 10; /* arbitrary non-zero */ -+ queue->completion_queue = NULL; -+ INIT_LIST_HEAD(&queue->poll_list); -+ set_bit(__LINK_STATE_START, &queue->blog_dev.state); -+ queue->blog_dev.weight = weight_p; -+ queue->blog_dev.poll = process_backlog; -+ atomic_set(&queue->blog_dev.refcnt, 1); -+ } -+ -+#ifdef CONFIG_NET_PROFILE -+ net_profile_init(); -+ NET_PROFILE_REGISTER(dev_queue_xmit); -+ NET_PROFILE_REGISTER(softnet_process); -+#endif -+ -+#ifdef OFFLINE_SAMPLE -+ samp_timer.expires = jiffies + (10 * HZ); -+ add_timer(&samp_timer); -+#endif -+ -+ /* -+ * Add the devices. -+ * If the call to dev->init fails, the dev is removed -+ * from the chain disconnecting the device until the -+ * next reboot. -+ * -+ * NB At boot phase networking is dead. No locking is required. -+ * But we still preserve dev_base_lock for sanity. -+ */ -+ -+ dp = &dev_base; -+ while ((dev = *dp) != NULL) { -+ spin_lock_init(&dev->queue_lock); -+ spin_lock_init(&dev->xmit_lock); -+#ifdef CONFIG_NET_FASTROUTE -+ dev->fastpath_lock = RW_LOCK_UNLOCKED; -+#endif -+ dev->xmit_lock_owner = -1; -+ dev->iflink = -1; -+ dev_hold(dev); -+ -+ /* -+ * Allocate name. If the init() fails -+ * the name will be reissued correctly. -+ */ -+ if (strchr(dev->name, '%')) -+ dev_alloc_name(dev, dev->name); -+ -+ /* -+ * Check boot time settings for the device. -+ */ -+ netdev_boot_setup_check(dev); -+ -+ if (dev->init && dev->init(dev)) { -+ /* -+ * It failed to come up. It will be unhooked later. -+ * dev_alloc_name can now advance to next suitable -+ * name that is checked next. -+ */ -+ dev->deadbeaf = 1; -+ dp = &dev->next; -+ } else { -+ dp = &dev->next; -+ dev->ifindex = dev_new_index(); -+ if (dev->iflink == -1) -+ dev->iflink = dev->ifindex; -+ if (dev->rebuild_header == NULL) -+ dev->rebuild_header = default_rebuild_header; -+ dev_init_scheduler(dev); -+ set_bit(__LINK_STATE_PRESENT, &dev->state); -+ } -+ } -+ -+ /* -+ * Unhook devices that failed to come up -+ */ -+ dp = &dev_base; -+ while ((dev = *dp) != NULL) { -+ if (dev->deadbeaf) { -+ write_lock_bh(&dev_base_lock); -+ *dp = dev->next; -+ write_unlock_bh(&dev_base_lock); -+ dev_put(dev); -+ } else { -+ dp = &dev->next; -+ } -+ } -+ -+#ifdef CONFIG_PROC_FS -+ proc_net_create("dev", 0, dev_get_info); -+ create_proc_read_entry("net/softnet_stat", 0, 0, dev_proc_stats, NULL); -+ proc_net_drivers = proc_mkdir("net/drivers", 0); -+#ifdef WIRELESS_EXT -+ /* Available in net/core/wireless.c */ -+ proc_net_create("wireless", 0, dev_get_wireless_info); -+#endif /* WIRELESS_EXT */ -+#endif /* CONFIG_PROC_FS */ -+ -+ dev_boot_phase = 0; -+ -+ open_softirq(NET_TX_SOFTIRQ, net_tx_action, NULL); -+ open_softirq(NET_RX_SOFTIRQ, net_rx_action, NULL); -+ -+ dst_init(); -+ dev_mcast_init(); -+ -+#ifdef CONFIG_NET_SCHED -+ pktsched_init(); -+#endif -+ /* -+ * Initialise network devices -+ */ -+ -+ net_device_init(); -+ -+ return 0; -+} -+ -+#ifdef CONFIG_HOTPLUG -+ -+/* Notify userspace when a netdevice event occurs, -+ * by running '/sbin/hotplug net' with certain -+ * environment variables set. -+ */ -+ -+static int net_run_sbin_hotplug(struct net_device *dev, char *action) -+{ -+ char *argv[3], *envp[5], ifname[12 + IFNAMSIZ], action_str[32]; -+ int i; -+ -+ sprintf(ifname, "INTERFACE=%s", dev->name); -+ sprintf(action_str, "ACTION=%s", action); -+ -+ i = 0; -+ argv[i++] = hotplug_path; -+ argv[i++] = "net"; -+ argv[i] = 0; -+ -+ i = 0; -+ /* minimal command environment */ -+ envp [i++] = "HOME=/"; -+ envp [i++] = "PATH=/sbin:/bin:/usr/sbin:/usr/bin"; -+ envp [i++] = ifname; -+ envp [i++] = action_str; -+ envp [i] = 0; -+ -+ return call_usermodehelper(argv [0], argv, envp); -+} -+#endif -diff --unified --recursive --new-file linux-2.4.30/net/netsyms.c linux-2.4.30-1-686-smp-ring3/net/netsyms.c ---- linux-2.4.30/net/netsyms.c 2005-04-04 03:42:20.000000000 +0200 -+++ linux-2.4.30-1-686-smp-ring3/net/netsyms.c 2005-10-22 23:08:28.016050500 +0200 -@@ -628,3 +628,18 @@ - #endif /* CONFIG_NET_RADIO || CONFIG_NET_PCMCIA_RADIO */ - - #endif /* CONFIG_NET */ -+#if defined (CONFIG_RING) || defined(CONFIG_RING_MODULE) -+#include <linux/version.h> -+ -+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)) -+#include <linux/ring.h> -+ -+EXPORT_SYMBOL(get_skb_ring_handler); -+EXPORT_SYMBOL(set_skb_ring_handler); -+EXPORT_SYMBOL(do_skb_ring_handler); -+EXPORT_SYMBOL(get_buffer_ring_handler); -+EXPORT_SYMBOL(set_buffer_ring_handler); -+EXPORT_SYMBOL(do_buffer_ring_handler); -+#endif -+ -+#endif -diff --unified --recursive --new-file linux-2.4.30/net/ring/Config.in linux-2.4.30-1-686-smp-ring3/net/ring/Config.in ---- linux-2.4.30/net/ring/Config.in 1970-01-01 01:00:00.000000000 +0100 -+++ linux-2.4.30-1-686-smp-ring3/net/ring/Config.in 2005-10-22 23:08:28.048052500 +0200 -@@ -0,0 +1,4 @@ -+# -+# PF_RING -+# -+tristate ' PF_RING (EXPERIMENTAL)' CONFIG_RING -diff --unified --recursive --new-file linux-2.4.30/net/ring/Makefile linux-2.4.30-1-686-smp-ring3/net/ring/Makefile ---- linux-2.4.30/net/ring/Makefile 1970-01-01 01:00:00.000000000 +0100 -+++ linux-2.4.30-1-686-smp-ring3/net/ring/Makefile 2005-10-22 23:08:27.420013250 +0200 -@@ -0,0 +1,16 @@ -+# -+# Makefile for the ring driver. -+# -+ -+O_TARGET := ring.o -+ -+export-objs := ring_packet.o -+ -+obj-y := ring_packet.o -+ -+ifeq ($(CONFIG_RING),m) -+ obj-m += $(O_TARGET) -+endif -+ -+include $(TOPDIR)/Rules.make -+ -diff --unified --recursive --new-file linux-2.4.30/net/ring/ring_packet.c linux-2.4.30-1-686-smp-ring3/net/ring/ring_packet.c ---- linux-2.4.30/net/ring/ring_packet.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux-2.4.30-1-686-smp-ring3/net/ring/ring_packet.c 2005-10-22 23:08:27.440014500 +0200 -@@ -0,0 +1,1623 @@ -+/* -+ * -+ * (C) 2004-05 - Luca Deri <deri@ntop.org> -+ * -+ * This code includes patches courtesy of -+ * - Jeff Randall <jrandall@nexvu.com> -+ * - Helmut Manck <helmut.manck@secunet.com> -+ * - Brad Doctor <bdoctor@ps-ax.com> -+ * -+ */ -+ -+/* FIX: add an entry inside the /proc filesystem */ -+ -+#include <linux/version.h> -+#include <linux/config.h> -+#include <linux/module.h> -+#include <linux/kernel.h> -+#include <linux/socket.h> -+#include <linux/skbuff.h> -+#include <linux/rtnetlink.h> -+#include <linux/in.h> -+#include <linux/in6.h> -+#include <linux/init.h> -+#include <linux/filter.h> -+#include <linux/ring.h> -+#include <linux/ip.h> -+#include <linux/tcp.h> -+#include <linux/udp.h> -+#include <linux/list.h> -+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)) -+#include <net/xfrm.h> -+#else -+#include <linux/poll.h> -+#endif -+#include <net/sock.h> -+#include <asm/io.h> /* needed for virt_to_phys() */ -+ -+/* #define RING_DEBUG */ -+ -+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,11)) -+static inline int remap_page_range(struct vm_area_struct *vma, -+ unsigned long uvaddr, -+ unsigned long paddr, -+ unsigned long size, -+ pgprot_t prot) { -+ return(remap_pfn_range(vma, uvaddr, paddr >> PAGE_SHIFT, -+ size, prot)); -+} -+#endif -+ -+/* ************************************************* */ -+ -+#define CLUSTER_LEN 8 -+ -+struct ring_cluster { -+ u_short cluster_id; /* 0 = no cluster */ -+ u_short num_cluster_elements; -+ enum cluster_type hashing_mode; -+ u_short hashing_id; -+ struct sock *sk[CLUSTER_LEN]; -+ struct ring_cluster *next; /* NULL = last element of the cluster */ -+}; -+ -+/* ************************************************* */ -+ -+struct ring_element { -+ struct list_head list; -+ struct sock *sk; -+}; -+ -+/* ************************************************* */ -+ -+struct ring_opt { -+ struct net_device *ring_netdev; -+ -+ /* Cluster */ -+ u_short cluster_id; /* 0 = no cluster */ -+ -+ /* Reflector */ -+ struct net_device *reflector_dev; -+ -+ /* Packet buffers */ -+ unsigned long order; -+ -+ /* Ring Slots */ -+ unsigned long ring_memory; -+ FlowSlotInfo *slots_info; /* Basically it points to ring_memory */ -+ char *ring_slots; /* Basically it points to ring_memory -+ +sizeof(FlowSlotInfo) */ -+ -+ /* Packet Sampling */ -+ u_int pktToSample, sample_rate; -+ -+ /* BPF Filter */ -+ struct sk_filter *bpfFilter; -+ -+ /* Locks */ -+ atomic_t num_ring_slots_waiters; -+ wait_queue_head_t ring_slots_waitqueue; -+ rwlock_t ring_index_lock; -+ -+ /* Indexes (Internal) */ -+ u_int insert_page_id, insert_slot_id; -+}; -+ -+/* ************************************************* */ -+ -+/* List of all ring sockets. */ -+static struct list_head ring_table; -+ -+/* List of all clusters */ -+static struct ring_cluster *ring_cluster_list; -+ -+static rwlock_t ring_mgmt_lock = RW_LOCK_UNLOCKED; -+ -+/* ********************************** */ -+ -+/* Forward */ -+static struct proto_ops ring_ops; -+ -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,11)) -+static struct proto ring_proto; -+#endif -+ -+static int skb_ring_handler(struct sk_buff *skb, u_char recv_packet, -+ u_char real_skb); -+static int buffer_ring_handler(struct net_device *dev, char *data, int len); -+static int remove_from_cluster(struct sock *sock, struct ring_opt *pfr); -+ -+/* Extern */ -+ -+/* ********************************** */ -+ -+/* Defaults */ -+static u_int bucket_len = 128, num_slots = 4096, sample_rate = 1, -+ transparent_mode = 0, enable_tx_capture = 0; -+ -+MODULE_PARM(bucket_len, "i"); -+MODULE_PARM_DESC(bucket_len, "Number of ring buckets"); -+MODULE_PARM(num_slots, "i"); -+MODULE_PARM_DESC(num_slots, "Number of ring slots"); -+MODULE_PARM(sample_rate, "i"); -+MODULE_PARM_DESC(sample_rate, "Ring packet sample rate"); -+MODULE_PARM(transparent_mode, "i"); -+MODULE_PARM_DESC(transparent_mode, -+ "Set to 1 to set transparent mode " -+ "(slower but backwards compatible)"); -+MODULE_PARM(enable_tx_capture, "i"); -+MODULE_PARM_DESC(enable_tx_capture, "Set to 1 to capture outgoing packets"); -+ -+/* ********************************** */ -+ -+#define MIN_QUEUED_PKTS 64 -+#define MAX_QUEUE_LOOPS 64 -+ -+ -+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)) -+#define ring_sk_datatype(__sk) ((struct ring_opt *)__sk) -+#define ring_sk(__sk) ((__sk)->sk_protinfo) -+#else -+#define ring_sk_datatype(a) (a) -+#define ring_sk(__sk) ((__sk)->protinfo.pf_ring) -+#endif -+ -+#define _rdtsc() ({ uint64_t x; asm volatile("rdtsc" : "=A" (x)); x; }) -+ -+/* -+ int dev_queue_xmit(struct sk_buff *skb) -+ skb->dev; -+ struct net_device *dev_get_by_name(const char *name) -+*/ -+ -+/* ********************************** */ -+ -+static void ring_sock_destruct(struct sock *sk) { -+ -+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)) -+ skb_queue_purge(&sk->sk_receive_queue); -+ -+ if (!sock_flag(sk, SOCK_DEAD)) { -+#if defined(RING_DEBUG) -+ printk("Attempt to release alive ring socket: %p\n", sk); -+#endif -+ return; -+ } -+ -+ BUG_TRAP(!atomic_read(&sk->sk_rmem_alloc)); -+ BUG_TRAP(!atomic_read(&sk->sk_wmem_alloc)); -+#else -+ -+ BUG_TRAP(atomic_read(&sk->rmem_alloc)==0); -+ BUG_TRAP(atomic_read(&sk->wmem_alloc)==0); -+ -+ if (!sk->dead) { -+#if defined(RING_DEBUG) -+ printk("Attempt to release alive ring socket: %p\n", sk); -+#endif -+ return; -+ } -+#endif -+ -+ kfree(ring_sk(sk)); -+ -+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)) -+ MOD_DEC_USE_COUNT; -+#endif -+} -+ -+/* ********************************** */ -+/* -+ * ring_insert() -+ * -+ * store the sk in a new element and add it -+ * to the head of the list. -+ */ -+static inline void ring_insert(struct sock *sk) { -+ struct ring_element *next; -+ -+#if defined(RING_DEBUG) -+ printk("RING: ring_insert()\n"); -+#endif -+ -+ next = kmalloc(sizeof(struct ring_element), GFP_ATOMIC); -+ if(next != NULL) { -+ next->sk = sk; -+ write_lock_irq(&ring_mgmt_lock); -+ list_add(&next->list, &ring_table); -+ write_unlock_irq(&ring_mgmt_lock); -+ } else { -+ if (net_ratelimit()) -+ printk("RING: could not kmalloc slot!!\n"); -+ } -+} -+ -+/* ********************************** */ -+/* -+ * ring_remove() -+ * -+ * For each of the elements in the list: -+ * - check if this is the element we want to delete -+ * - if it is, remove it from the list, and free it. -+ * -+ * stop when we find the one we're looking for (break), -+ * or when we reach the end of the list. -+ */ -+static inline void ring_remove(struct sock *sk) { -+ struct list_head *ptr; -+ struct ring_element *entry; -+ -+ -+ for(ptr = ring_table.next; ptr != &ring_table; ptr = ptr->next) { -+ entry = list_entry(ptr, struct ring_element, list); -+ -+ if(entry->sk == sk) { -+ write_lock_irq(&ring_mgmt_lock); -+ list_del(ptr); -+ kfree(ptr); -+ write_unlock_irq(&ring_mgmt_lock); -+ break; -+ } -+ } -+ -+} -+ -+/* ********************************** */ -+ -+static u_int32_t num_queued_pkts(struct ring_opt *pfr) { -+ -+ if(pfr->ring_slots != NULL) { -+ -+ u_int32_t tot_insert = pfr->slots_info->insert_idx, -+#if defined(RING_DEBUG) -+ tot_read = pfr->slots_info->tot_read, tot_pkts; -+#else -+ tot_read = pfr->slots_info->tot_read; -+#endif -+ -+ if(tot_insert >= tot_read) { -+#if defined(RING_DEBUG) -+ tot_pkts = tot_insert-tot_read; -+#endif -+ return(tot_insert-tot_read); -+ } else { -+#if defined(RING_DEBUG) -+ tot_pkts = ((u_int32_t)-1)+tot_insert-tot_read; -+#endif -+ return(((u_int32_t)-1)+tot_insert-tot_read); -+ } -+ -+#if defined(RING_DEBUG) -+ printk("-> num_queued_pkts=%d [tot_insert=%d][tot_read=%d]\n", -+ tot_pkts, tot_insert, tot_read); -+#endif -+ -+ } else -+ return(0); -+} -+ -+/* ********************************** */ -+ -+static inline FlowSlot* get_insert_slot(struct ring_opt *pfr) { -+#if defined(RING_DEBUG) -+ printk("get_insert_slot(%d)\n", pfr->slots_info->insert_idx); -+#endif -+ -+ if(pfr->ring_slots != NULL) { -+ FlowSlot *slot = (FlowSlot*)&(pfr->ring_slots[pfr->slots_info->insert_idx -+ *pfr->slots_info->slot_len]); -+ return(slot); -+ } else -+ return(NULL); -+} -+ -+/* ********************************** */ -+ -+static inline FlowSlot* get_remove_slot(struct ring_opt *pfr) { -+#if defined(RING_DEBUG) -+ printk("get_remove_slot(%d)\n", pfr->slots_info->remove_idx); -+#endif -+ -+ if(pfr->ring_slots != NULL) -+ return((FlowSlot*)&(pfr->ring_slots[pfr->slots_info->remove_idx* -+ pfr->slots_info->slot_len])); -+ else -+ return(NULL); -+} -+ -+/* ********************************** */ -+ -+static void add_skb_to_ring(struct sk_buff *skb, -+ struct ring_opt *pfr, -+ u_char recv_packet, -+ u_char real_skb /* 1=skb 0=faked skb */) { -+ FlowSlot *theSlot; -+ int idx, displ; -+ -+ if(recv_packet) { -+ /* Hack for identifying a packet received by the e1000 */ -+ if(real_skb) { -+ displ = SKB_DISPLACEMENT; -+ } else -+ displ = 0; /* Received by the e1000 wrapper */ -+ } else -+ displ = 0; -+ -+ write_lock(&pfr->ring_index_lock); -+ pfr->slots_info->tot_pkts++; -+ write_unlock(&pfr->ring_index_lock); -+ -+ /* BPF Filtering (from af_packet.c) */ -+ if(pfr->bpfFilter != NULL) { -+ unsigned res = 1, len; -+ -+ len = skb->len-skb->data_len; -+ -+ write_lock(&pfr->ring_index_lock); -+ skb->data -= displ; -+ res = sk_run_filter(skb, pfr->bpfFilter->insns, pfr->bpfFilter->len); -+ skb->data += displ; -+ write_unlock(&pfr->ring_index_lock); -+ -+ if(res == 0) { -+ /* Filter failed */ -+ -+#if defined(RING_DEBUG) -+ printk("add_skb_to_ring(skb): Filter failed [len=%d][tot=%llu]" -+ "[insertIdx=%d][pkt_type=%d][cloned=%d]\n", -+ (int)skb->len, pfr->slots_info->tot_pkts, -+ pfr->slots_info->insert_idx, -+ skb->pkt_type, skb->cloned); -+#endif -+ -+ return; -+ } -+ } -+ -+ /* ************************** */ -+ -+ if(pfr->sample_rate > 1) { -+ if(pfr->pktToSample == 0) { -+ write_lock(&pfr->ring_index_lock); -+ pfr->pktToSample = pfr->sample_rate; -+ write_unlock(&pfr->ring_index_lock); -+ } else { -+ write_lock(&pfr->ring_index_lock); -+ pfr->pktToSample--; -+ write_unlock(&pfr->ring_index_lock); -+ -+#if defined(RING_DEBUG) -+ printk("add_skb_to_ring(skb): sampled packet [len=%d]" -+ "[tot=%llu][insertIdx=%d][pkt_type=%d][cloned=%d]\n", -+ (int)skb->len, pfr->slots_info->tot_pkts, -+ pfr->slots_info->insert_idx, -+ skb->pkt_type, skb->cloned); -+#endif -+ return; -+ } -+ } -+ -+ /* ************************************* */ -+ -+ if((pfr->reflector_dev != NULL) -+ && (!netif_queue_stopped(pfr->reflector_dev))) { -+ int cpu = smp_processor_id(); -+ -+ /* increase reference counter so that this skb is not freed */ -+ atomic_inc(&skb->users); -+ -+ skb->data -= displ; -+ -+ /* send it */ -+ if (pfr->reflector_dev->xmit_lock_owner != cpu) { -+ spin_lock_bh(&pfr->reflector_dev->xmit_lock); -+ pfr->reflector_dev->xmit_lock_owner = cpu; -+ spin_unlock_bh(&pfr->reflector_dev->xmit_lock); -+ -+ if (pfr->reflector_dev->hard_start_xmit(skb, -+ pfr->reflector_dev) == 0) { -+ spin_lock_bh(&pfr->reflector_dev->xmit_lock); -+ pfr->reflector_dev->xmit_lock_owner = -1; -+ skb->data += displ; -+ spin_unlock_bh(&pfr->reflector_dev->xmit_lock); -+#if defined(RING_DEBUG) -+ printk("++ hard_start_xmit succeeded\n"); -+#endif -+ return; /* OK */ -+ } -+ -+ spin_lock_bh(&pfr->reflector_dev->xmit_lock); -+ pfr->reflector_dev->xmit_lock_owner = -1; -+ spin_unlock_bh(&pfr->reflector_dev->xmit_lock); -+ } -+ -+#if defined(RING_DEBUG) -+ printk("++ hard_start_xmit failed\n"); -+#endif -+ skb->data += displ; -+ return; /* -ENETDOWN */ -+ } -+ -+ /* ************************************* */ -+ -+#if defined(RING_DEBUG) -+ printk("add_skb_to_ring(skb) [len=%d][tot=%llu][insertIdx=%d]" -+ "[pkt_type=%d][cloned=%d]\n", -+ (int)skb->len, pfr->slots_info->tot_pkts, -+ pfr->slots_info->insert_idx, -+ skb->pkt_type, skb->cloned); -+#endif -+ -+ idx = pfr->slots_info->insert_idx; -+ theSlot = get_insert_slot(pfr); -+ -+ if((theSlot != NULL) && (theSlot->slot_state == 0)) { -+ struct pcap_pkthdr *hdr; -+ unsigned int bucketSpace; -+ char *bucket; -+ -+ /* Update Index */ -+ idx++; -+ -+ if(idx == pfr->slots_info->tot_slots) { -+ write_lock(&pfr->ring_index_lock); -+ pfr->slots_info->insert_idx = 0; -+ write_unlock(&pfr->ring_index_lock); -+ } else { -+ write_lock(&pfr->ring_index_lock); -+ pfr->slots_info->insert_idx = idx; -+ write_unlock(&pfr->ring_index_lock); -+ } -+ -+ bucketSpace = pfr->slots_info->slot_len -+#ifdef RING_MAGIC -+ - sizeof(u_char) -+#endif -+ - sizeof(u_char) /* flowSlot.slot_state */ -+ - sizeof(struct pcap_pkthdr) -+ - 1 /* 10 */ /* safe boundary */; -+ -+ bucket = &theSlot->bucket; -+ hdr = (struct pcap_pkthdr*)bucket; -+ -+ if(skb->stamp.tv_sec == 0) do_gettimeofday(&skb->stamp); -+ -+ hdr->ts.tv_sec = skb->stamp.tv_sec, hdr->ts.tv_usec = skb->stamp.tv_usec; -+ hdr->caplen = skb->len+displ; -+ -+ if(hdr->caplen > bucketSpace) -+ hdr->caplen = bucketSpace; -+ -+ hdr->len = skb->len+displ; -+ memcpy(&bucket[sizeof(struct pcap_pkthdr)], -+ skb->data-displ, hdr->caplen); -+ -+#if defined(RING_DEBUG) -+ { -+ static unsigned int lastLoss = 0; -+ -+ if(pfr->slots_info->tot_lost -+ && (lastLoss != pfr->slots_info->tot_lost)) { -+ printk("add_skb_to_ring(%d): [bucketSpace=%d]" -+ "[hdr.caplen=%d][skb->len=%d]" -+ "[pcap_pkthdr=%d][removeIdx=%d]" -+ "[loss=%lu][page=%u][slot=%u]\n", -+ idx-1, bucketSpace, hdr->caplen, skb->len, -+ sizeof(struct pcap_pkthdr), -+ pfr->slots_info->remove_idx, -+ (long unsigned int)pfr->slots_info->tot_lost, -+ pfr->insert_page_id, pfr->insert_slot_id); -+ -+ lastLoss = pfr->slots_info->tot_lost; -+ } -+ } -+#endif -+ -+ write_lock(&pfr->ring_index_lock); -+ pfr->slots_info->tot_insert++; -+ theSlot->slot_state = 1; -+ write_unlock(&pfr->ring_index_lock); -+ } else { -+ write_lock(&pfr->ring_index_lock); -+ pfr->slots_info->tot_lost++; -+ write_unlock(&pfr->ring_index_lock); -+ -+#if defined(RING_DEBUG) -+ printk("add_skb_to_ring(skb): packet lost [loss=%lu]" -+ "[removeIdx=%u][insertIdx=%u]\n", -+ (long unsigned int)pfr->slots_info->tot_lost, -+ pfr->slots_info->remove_idx, pfr->slots_info->insert_idx); -+#endif -+ } -+ -+ /* wakeup in case of poll() */ -+ if(waitqueue_active(&pfr->ring_slots_waitqueue)) -+ wake_up_interruptible(&pfr->ring_slots_waitqueue); -+} -+ -+/* ********************************** */ -+ -+static u_int hash_skb(struct ring_cluster *cluster_ptr, -+ struct sk_buff *skb, u_char recv_packet) { -+ u_int idx; -+ int displ; -+ struct iphdr *ip; -+ -+ if(cluster_ptr->hashing_mode == cluster_round_robin) { -+ idx = cluster_ptr->hashing_id++; -+ } else { -+ /* Per-flow clustering */ -+ if(skb->len > sizeof(struct iphdr)+sizeof(struct tcphdr)) { -+ if(recv_packet) -+ displ = 0; -+ else -+ displ = SKB_DISPLACEMENT; -+ -+ /* -+ skb->data+displ -+ -+ Always points to to the IP part of the packet -+ */ -+ -+ ip = (struct iphdr*)(skb->data+displ); -+ -+ idx = ip->saddr+ip->daddr+ip->protocol; -+ -+ if(ip->protocol == IPPROTO_TCP) { -+ struct tcphdr *tcp = (struct tcphdr*)(skb->data+displ -+ +sizeof(struct iphdr)); -+ idx += tcp->source+tcp->dest; -+ } else if(ip->protocol == IPPROTO_UDP) { -+ struct udphdr *udp = (struct udphdr*)(skb->data+displ -+ +sizeof(struct iphdr)); -+ idx += udp->source+udp->dest; -+ } -+ } else -+ idx = skb->len; -+ } -+ -+ return(idx % cluster_ptr->num_cluster_elements); -+} -+ -+/* ********************************** */ -+ -+static int skb_ring_handler(struct sk_buff *skb, -+ u_char recv_packet, -+ u_char real_skb /* 1=skb 0=faked skb */) { -+ struct sock *skElement; -+ int rc = 0; -+ struct list_head *ptr; -+ struct ring_cluster *cluster_ptr; -+ -+#ifdef PROFILING -+ uint64_t rdt = _rdtsc(), rdt1, rdt2; -+#endif -+ -+ if((!skb) /* Invalid skb */ -+ || ((!enable_tx_capture) && (!recv_packet))) { -+ /* -+ An outgoing packet is about to be sent out -+ but we decided not to handle transmitted -+ packets. -+ */ -+ return(0); -+ } -+ -+#if defined(RING_DEBUG) -+ if(0) { -+ printk("skb_ring_handler() [len=%d][dev=%s]\n", skb->len, -+ skb->dev->name == NULL ? "<NULL>" : skb->dev->name); -+ } -+#endif -+ -+#ifdef PROFILING -+ rdt1 = _rdtsc(); -+#endif -+ -+ /* [1] Check unclustered sockets */ -+ for (ptr = ring_table.next; ptr != &ring_table; ptr = ptr->next) { -+ struct ring_opt *pfr; -+ struct ring_element *entry; -+ -+ entry = list_entry(ptr, struct ring_element, list); -+ -+ read_lock(&ring_mgmt_lock); -+ skElement = entry->sk; -+ pfr = ring_sk(skElement); -+ read_unlock(&ring_mgmt_lock); -+ -+ if((pfr != NULL) -+ && (pfr->cluster_id == 0 /* No cluster */) -+ && (pfr->ring_slots != NULL) -+ && (pfr->ring_netdev == skb->dev)) { -+ /* We've found the ring where the packet can be stored */ -+ read_lock(&ring_mgmt_lock); -+ add_skb_to_ring(skb, pfr, recv_packet, real_skb); -+ read_unlock(&ring_mgmt_lock); -+ -+ rc = 1; /* Ring found: we've done our job */ -+ } -+ } -+ -+ /* [2] Check socket clusters */ -+ cluster_ptr = ring_cluster_list; -+ -+ while(cluster_ptr != NULL) { -+ struct ring_opt *pfr; -+ -+ if(cluster_ptr->num_cluster_elements > 0) { -+ u_int skb_hash = hash_skb(cluster_ptr, skb, recv_packet); -+ -+ read_lock(&ring_mgmt_lock); -+ skElement = cluster_ptr->sk[skb_hash]; -+ read_unlock(&ring_mgmt_lock); -+ -+ if(skElement != NULL) { -+ pfr = ring_sk(skElement); -+ -+ if((pfr != NULL) -+ && (pfr->ring_slots != NULL) -+ && (pfr->ring_netdev == skb->dev)) { -+ /* We've found the ring where the packet can be stored */ -+ read_lock(&ring_mgmt_lock); -+ add_skb_to_ring(skb, pfr, recv_packet, real_skb); -+ read_unlock(&ring_mgmt_lock); -+ -+ rc = 1; /* Ring found: we've done our job */ -+ } -+ } -+ } -+ -+ cluster_ptr = cluster_ptr->next; -+ } -+ -+#ifdef PROFILING -+ rdt1 = _rdtsc()-rdt1; -+#endif -+ -+#ifdef PROFILING -+ rdt2 = _rdtsc(); -+#endif -+ -+ if(transparent_mode) rc = 0; -+ -+ if((rc != 0) && real_skb) -+ dev_kfree_skb(skb); /* Free the skb */ -+ -+#ifdef PROFILING -+ rdt2 = _rdtsc()-rdt2; -+ rdt = _rdtsc()-rdt; -+ -+#if defined(RING_DEBUG) -+ printk("# cycles: %d [lock costed %d %d%%][free costed %d %d%%]\n", -+ (int)rdt, rdt-rdt1, -+ (int)((float)((rdt-rdt1)*100)/(float)rdt), -+ rdt2, -+ (int)((float)(rdt2*100)/(float)rdt)); -+#endif -+#endif -+ -+ return(rc); /* 0 = packet not handled */ -+} -+ -+/* ********************************** */ -+ -+struct sk_buff skb; -+ -+static int buffer_ring_handler(struct net_device *dev, -+ char *data, int len) { -+ -+#if defined(RING_DEBUG) -+ printk("buffer_ring_handler: [dev=%s][len=%d]\n", -+ dev->name == NULL ? "<NULL>" : dev->name, len); -+#endif -+ -+ skb.dev = dev, skb.len = len, skb.data = data, -+ skb.data_len = len, skb.stamp.tv_sec = 0; /* Calculate the time */ -+ -+ skb_ring_handler(&skb, 1, 0 /* fake skb */); -+ -+ return(0); -+} -+ -+/* ********************************** */ -+ -+static int ring_create(struct socket *sock, int protocol) { -+ struct sock *sk; -+ struct ring_opt *pfr; -+ int err; -+ -+#if defined(RING_DEBUG) -+ printk("RING: ring_create()\n"); -+#endif -+ -+ /* Are you root, superuser or so ? */ -+ if(!capable(CAP_NET_ADMIN)) -+ return -EPERM; -+ -+ if(sock->type != SOCK_RAW) -+ return -ESOCKTNOSUPPORT; -+ -+ if(protocol != htons(ETH_P_ALL)) -+ return -EPROTONOSUPPORT; -+ -+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)) -+ MOD_INC_USE_COUNT; -+#endif -+ -+ err = -ENOMEM; -+ -+ // BD: -- broke this out to keep it more simple and clear as to what the -+ // options are. -+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)) -+#if (LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,11)) -+ sk = sk_alloc(PF_RING, GFP_KERNEL, 1, NULL); -+#endif -+#endif -+ -+ // BD: API changed in 2.6.12, ref: -+ // http://svn.clkao.org/svnweb/linux/revision/?rev=28201 -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,11)) -+ sk = sk_alloc(PF_RING, GFP_ATOMIC, &ring_proto, 1); -+#endif -+ -+ if (sk == NULL) -+ goto out; -+ -+ sock->ops = &ring_ops; -+ sock_init_data(sock, sk); -+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)) -+#if (LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,11)) -+ sk_set_owner(sk, THIS_MODULE); -+#endif -+#endif -+ -+ err = -ENOMEM; -+ ring_sk(sk) = ring_sk_datatype(kmalloc(sizeof(*pfr), GFP_KERNEL)); -+ -+ if (!(pfr = ring_sk(sk))) { -+ sk_free(sk); -+ goto out; -+ } -+ memset(pfr, 0, sizeof(*pfr)); -+ init_waitqueue_head(&pfr->ring_slots_waitqueue); -+ pfr->ring_index_lock = RW_LOCK_UNLOCKED; -+ atomic_set(&pfr->num_ring_slots_waiters, 0); -+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)) -+ sk->sk_family = PF_RING; -+ sk->sk_destruct = ring_sock_destruct; -+#else -+ sk->family = PF_RING; -+ sk->destruct = ring_sock_destruct; -+ sk->num = protocol; -+#endif -+ -+ ring_insert(sk); -+ -+#if defined(RING_DEBUG) -+ printk("RING: ring_create() - created\n"); -+#endif -+ -+ return(0); -+ out: -+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)) -+ MOD_DEC_USE_COUNT; -+#endif -+ return err; -+} -+ -+/* *********************************************** */ -+ -+static int ring_release(struct socket *sock) -+{ -+ struct sock *sk = sock->sk; -+ struct ring_opt *pfr = ring_sk(sk); -+ -+ if(!sk) -+ return 0; -+ -+#if defined(RING_DEBUG) -+ printk("RING: called ring_release\n"); -+#endif -+ -+#if defined(RING_DEBUG) -+ printk("RING: ring_release entered\n"); -+#endif -+ -+ ring_remove(sk); -+ -+ sock_orphan(sk); -+ sock->sk = NULL; -+ -+ /* Free the ring buffer */ -+ if(pfr->ring_memory) { -+ struct page *page, *page_end; -+ -+ page_end = virt_to_page(pfr->ring_memory + (PAGE_SIZE << pfr->order) - 1); -+ for(page = virt_to_page(pfr->ring_memory); page <= page_end; page++) -+ ClearPageReserved(page); -+ -+ free_pages(pfr->ring_memory, pfr->order); -+ } -+ -+ kfree(pfr); -+ ring_sk(sk) = NULL; -+ -+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)) -+ skb_queue_purge(&sk->sk_write_queue); -+#endif -+ sock_put(sk); -+ -+#if defined(RING_DEBUG) -+ printk("RING: ring_release leaving\n"); -+#endif -+ -+ return 0; -+} -+ -+/* ********************************** */ -+/* -+ * We create a ring for this socket and bind it to the specified device -+ */ -+static int packet_ring_bind(struct sock *sk, struct net_device *dev) -+{ -+ u_int the_slot_len; -+ u_int32_t tot_mem; -+ struct ring_opt *pfr = ring_sk(sk); -+ struct page *page, *page_end; -+ -+ if(!dev) return(-1); -+ -+#if defined(RING_DEBUG) -+ printk("RING: packet_ring_bind(%s) called\n", dev->name); -+#endif -+ -+ /* ********************************************** -+ -+ ************************************* -+ * * -+ * FlowSlotInfo * -+ * * -+ ************************************* <-+ -+ * FlowSlot * | -+ ************************************* | -+ * FlowSlot * | -+ ************************************* +- num_slots -+ * FlowSlot * | -+ ************************************* | -+ * FlowSlot * | -+ ************************************* <-+ -+ -+ ********************************************** */ -+ -+ the_slot_len = sizeof(u_char) /* flowSlot.slot_state */ -+ + sizeof(u_short) /* flowSlot.slot_len */ -+ + bucket_len /* flowSlot.bucket */; -+ -+ tot_mem = sizeof(FlowSlotInfo) + num_slots*the_slot_len; -+ -+ /* -+ Calculate the value of the order parameter used later. -+ See http://www.linuxjournal.com/article.php?sid=1133 -+ */ -+ for(pfr->order = 0;(PAGE_SIZE << pfr->order) < tot_mem; pfr->order++) ; -+ -+ /* -+ We now try to allocate the memory as required. If we fail -+ we try to allocate a smaller amount or memory (hence a -+ smaller ring). -+ */ -+ while((pfr->ring_memory = __get_free_pages(GFP_ATOMIC, pfr->order)) == 0) -+ if(pfr->order-- == 0) -+ break; -+ -+ if(pfr->order == 0) { -+#if defined(RING_DEBUG) -+ printk("ERROR: not enough memory\n"); -+#endif -+ return(-1); -+ } else { -+#if defined(RING_DEBUG) -+ printk("RING: succesfully allocated %lu KB [tot_mem=%d][order=%ld]\n", -+ PAGE_SIZE >> (10 - pfr->order), tot_mem, pfr->order); -+#endif -+ } -+ -+ tot_mem = PAGE_SIZE << pfr->order; -+ memset((char*)pfr->ring_memory, 0, tot_mem); -+ -+ /* Now we need to reserve the pages */ -+ page_end = virt_to_page(pfr->ring_memory + (PAGE_SIZE << pfr->order) - 1); -+ for(page = virt_to_page(pfr->ring_memory); page <= page_end; page++) -+ SetPageReserved(page); -+ -+ pfr->slots_info = (FlowSlotInfo*)pfr->ring_memory; -+ pfr->ring_slots = (char*)(pfr->ring_memory+sizeof(FlowSlotInfo)); -+ -+ pfr->slots_info->version = RING_FLOWSLOT_VERSION; -+ pfr->slots_info->slot_len = the_slot_len; -+ pfr->slots_info->tot_slots = (tot_mem-sizeof(FlowSlotInfo))/the_slot_len; -+ pfr->slots_info->tot_mem = tot_mem; -+ pfr->slots_info->sample_rate = sample_rate; -+ -+#if defined(RING_DEBUG) -+ printk("RING: allocated %d slots [slot_len=%d][tot_mem=%u]\n", -+ pfr->slots_info->tot_slots, pfr->slots_info->slot_len, -+ pfr->slots_info->tot_mem); -+#endif -+ -+#ifdef RING_MAGIC -+ { -+ int i; -+ -+ for(i=0; i<pfr->slots_info->tot_slots; i++) { -+ unsigned long idx = i*pfr->slots_info->slot_len; -+ FlowSlot *slot = (FlowSlot*)&pfr->ring_slots[idx]; -+ slot->magic = RING_MAGIC_VALUE; slot->slot_state = 0; -+ } -+ } -+#endif -+ -+ pfr->insert_page_id = 1, pfr->insert_slot_id = 0; -+ -+ /* -+ IMPORTANT -+ Leave this statement here as last one. In fact when -+ the ring_netdev != NULL the socket is ready to be used. -+ */ -+ pfr->ring_netdev = dev; -+ -+ return(0); -+} -+ -+/* ************************************* */ -+ -+/* Bind to a device */ -+static int ring_bind(struct socket *sock, -+ struct sockaddr *sa, int addr_len) -+{ -+ struct sock *sk=sock->sk; -+ struct net_device *dev = NULL; -+ -+#if defined(RING_DEBUG) -+ printk("RING: ring_bind() called\n"); -+#endif -+ -+ /* -+ * Check legality -+ */ -+ if (addr_len != sizeof(struct sockaddr)) -+ return -EINVAL; -+ if (sa->sa_family != PF_RING) -+ return -EINVAL; -+ -+ /* Safety check: add trailing zero if missing */ -+ sa->sa_data[sizeof(sa->sa_data)-1] = '\0'; -+ -+#if defined(RING_DEBUG) -+ printk("RING: searching device %s\n", sa->sa_data); -+#endif -+ -+ if((dev = __dev_get_by_name(sa->sa_data)) == NULL) { -+#if defined(RING_DEBUG) -+ printk("RING: search failed\n"); -+#endif -+ return(-EINVAL); -+ } else -+ return(packet_ring_bind(sk, dev)); -+} -+ -+/* ************************************* */ -+ -+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)) -+ -+volatile void* virt_to_kseg(volatile void* address) { -+ pte_t *pte; -+ pud_t *pud; -+ unsigned long addr = (unsigned long)address; -+ -+ pud = pud_offset(pgd_offset_k((unsigned long) address), -+ (unsigned long) address); -+ -+ /* -+ High-memory support courtesy of -+ Brad Doctor <bdoctor@ps-ax.com> -+ */ -+#if defined(CONFIG_X86_PAE) && (!defined(CONFIG_NOHIGHMEM)) -+ pte = pte_offset_map(pmd_offset(pud, addr), addr); -+#else -+ pte = pmd_offset_map(pud, addr); -+#endif -+ -+ return((volatile void*)pte_page(*pte)); -+} -+ -+#else /* 2.4 */ -+ -+/* http://www.scs.ch/~frey/linux/memorymap.html */ -+volatile void *virt_to_kseg(volatile void *address) -+{ -+ pgd_t *pgd; pmd_t *pmd; pte_t *ptep, pte; -+ unsigned long va, ret = 0UL; -+ -+ va=VMALLOC_VMADDR((unsigned long)address); -+ -+ /* get the page directory. Use the kernel memory map. */ -+ pgd = pgd_offset_k(va); -+ -+ /* check whether we found an entry */ -+ if (!pgd_none(*pgd)) -+ { -+ /* get the page middle directory */ -+ pmd = pmd_offset(pgd, va); -+ /* check whether we found an entry */ -+ if (!pmd_none(*pmd)) -+ { -+ /* get a pointer to the page table entry */ -+ ptep = pte_offset(pmd, va); -+ pte = *ptep; -+ /* check for a valid page */ -+ if (pte_present(pte)) -+ { -+ /* get the address the page is refering to */ -+ ret = (unsigned long)page_address(pte_page(pte)); -+ /* add the offset within the page to the page address */ -+ ret |= (va & (PAGE_SIZE -1)); -+ } -+ } -+ } -+ return((volatile void *)ret); -+} -+#endif -+ -+/* ************************************* */ -+ -+static int ring_mmap(struct file *file, -+ struct socket *sock, -+ struct vm_area_struct *vma) -+{ -+ struct sock *sk = sock->sk; -+ struct ring_opt *pfr = ring_sk(sk); -+ unsigned long size, start; -+ u_int pagesToMap; -+ char *ptr; -+ -+#if defined(RING_DEBUG) -+ printk("RING: ring_mmap() called\n"); -+#endif -+ -+ if(pfr->ring_memory == 0) { -+#if defined(RING_DEBUG) -+ printk("RING: ring_mmap() failed: mapping area to an unbound socket\n"); -+#endif -+ return -EINVAL; -+ } -+ -+ size = (unsigned long)(vma->vm_end-vma->vm_start); -+ -+ if(size % PAGE_SIZE) { -+#if defined(RING_DEBUG) -+ printk("RING: ring_mmap() failed: len is not multiple of PAGE_SIZE\n"); -+#endif -+ return(-EINVAL); -+ } -+ -+ /* if userspace tries to mmap beyond end of our buffer, fail */ -+ if(size > pfr->slots_info->tot_mem) { -+#if defined(RING_DEBUG) -+ printk("proc_mmap() failed: area too large [%ld > %d]\n", size, pfr->slots_info->tot_mem); -+#endif -+ return(-EINVAL); -+ } -+ -+ pagesToMap = size/PAGE_SIZE; -+ -+#if defined(RING_DEBUG) -+ printk("RING: ring_mmap() called. %d pages to map\n", pagesToMap); -+#endif -+ -+#if defined(RING_DEBUG) -+ printk("RING: mmap [slot_len=%d][tot_slots=%d] for ring on device %s\n", -+ pfr->slots_info->slot_len, pfr->slots_info->tot_slots, -+ pfr->ring_netdev->name); -+#endif -+ -+ /* we do not want to have this area swapped out, lock it */ -+ vma->vm_flags |= VM_LOCKED; -+ start = vma->vm_start; -+ -+ /* Ring slots start from page 1 (page 0 is reserved for FlowSlotInfo) */ -+ ptr = (char*)(start+PAGE_SIZE); -+ -+ if(remap_page_range( -+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)) -+ vma, -+#endif -+ start, -+ __pa(pfr->ring_memory), -+ PAGE_SIZE*pagesToMap, vma->vm_page_prot)) { -+#if defined(RING_DEBUG) -+ printk("remap_page_range() failed\n"); -+#endif -+ return(-EAGAIN); -+ } -+ -+#if defined(RING_DEBUG) -+ printk("proc_mmap(pagesToMap=%d): success.\n", pagesToMap); -+#endif -+ -+ return 0; -+} -+ -+/* ************************************* */ -+ -+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)) -+static int ring_recvmsg(struct kiocb *iocb, struct socket *sock, -+ struct msghdr *msg, size_t len, int flags) -+#else -+ static int ring_recvmsg(struct socket *sock, struct msghdr *msg, int len, -+ int flags, struct scm_cookie *scm) -+#endif -+{ -+ FlowSlot* slot; -+ struct ring_opt *pfr = ring_sk(sock->sk); -+ u_int32_t queued_pkts, num_loops = 0; -+ -+#if defined(RING_DEBUG) -+ printk("ring_recvmsg called\n"); -+#endif -+ -+ slot = get_remove_slot(pfr); -+ -+ while((queued_pkts = num_queued_pkts(pfr)) < MIN_QUEUED_PKTS) { -+ wait_event_interruptible(pfr->ring_slots_waitqueue, 1); -+ -+#if defined(RING_DEBUG) -+ printk("-> ring_recvmsg returning %d [queued_pkts=%d][num_loops=%d]\n", -+ slot->slot_state, queued_pkts, num_loops); -+#endif -+ -+ if(queued_pkts > 0) { -+ if(num_loops++ > MAX_QUEUE_LOOPS) -+ break; -+ } -+ } -+ -+#if defined(RING_DEBUG) -+ if(slot != NULL) -+ printk("ring_recvmsg is returning [queued_pkts=%d][num_loops=%d]\n", -+ queued_pkts, num_loops); -+#endif -+ -+ return(queued_pkts); -+} -+ -+/* ************************************* */ -+ -+unsigned int ring_poll(struct file * file, -+ struct socket *sock, poll_table *wait) -+{ -+ FlowSlot* slot; -+ struct ring_opt *pfr = ring_sk(sock->sk); -+ -+#if defined(RING_DEBUG) -+ printk("poll called\n"); -+#endif -+ -+ slot = get_remove_slot(pfr); -+ -+ if((slot != NULL) && (slot->slot_state == 0)) -+ poll_wait(file, &pfr->ring_slots_waitqueue, wait); -+ -+#if defined(RING_DEBUG) -+ printk("poll returning %d\n", slot->slot_state); -+#endif -+ -+ if((slot != NULL) && (slot->slot_state == 1)) -+ return(POLLIN | POLLRDNORM); -+ else -+ return(0); -+} -+ -+/* ************************************* */ -+ -+int add_to_cluster_list(struct ring_cluster *el, -+ struct sock *sock) { -+ -+ if(el->num_cluster_elements == CLUSTER_LEN) -+ return(-1); /* Cluster full */ -+ -+ ring_sk_datatype(ring_sk(sock))->cluster_id = el->cluster_id; -+ el->sk[el->num_cluster_elements] = sock; -+ el->num_cluster_elements++; -+ return(0); -+} -+ -+/* ************************************* */ -+ -+int remove_from_cluster_list(struct ring_cluster *el, -+ struct sock *sock) { -+ int i, j; -+ -+ for(i=0; i<CLUSTER_LEN; i++) -+ if(el->sk[i] == sock) { -+ el->num_cluster_elements--; -+ -+ if(el->num_cluster_elements > 0) { -+ /* The cluster contains other elements */ -+ for(j=i; j<CLUSTER_LEN-1; j++) -+ el->sk[j] = el->sk[j+1]; -+ -+ el->sk[CLUSTER_LEN-1] = NULL; -+ } else { -+ /* Empty cluster */ -+ memset(el->sk, 0, sizeof(el->sk)); -+ } -+ -+ return(0); -+ } -+ -+ return(-1); /* Not found */ -+} -+ -+/* ************************************* */ -+ -+static int remove_from_cluster(struct sock *sock, -+ struct ring_opt *pfr) -+{ -+ struct ring_cluster *el; -+ -+#if defined(RING_DEBUG) -+ printk("--> remove_from_cluster(%d)\n", pfr->cluster_id); -+#endif -+ -+ if(pfr->cluster_id == 0 /* 0 = No Cluster */) -+ return(0); /* Noting to do */ -+ -+ el = ring_cluster_list; -+ -+ while(el != NULL) { -+ if(el->cluster_id == pfr->cluster_id) { -+ return(remove_from_cluster_list(el, sock)); -+ } else -+ el = el->next; -+ } -+ -+ return(-EINVAL); /* Not found */ -+} -+ -+/* ************************************* */ -+ -+static int add_to_cluster(struct sock *sock, -+ struct ring_opt *pfr, -+ u_short cluster_id) -+{ -+ struct ring_cluster *el; -+ -+#ifndef RING_DEBUG -+ printk("--> add_to_cluster(%d)\n", cluster_id); -+#endif -+ -+ if(cluster_id == 0 /* 0 = No Cluster */) return(-EINVAL); -+ -+ if(pfr->cluster_id != 0) -+ remove_from_cluster(sock, pfr); -+ -+ el = ring_cluster_list; -+ -+ while(el != NULL) { -+ if(el->cluster_id == cluster_id) { -+ return(add_to_cluster_list(el, sock)); -+ } else -+ el = el->next; -+ } -+ -+ /* There's no existing cluster. We need to create one */ -+ if((el = kmalloc(sizeof(struct ring_cluster), GFP_KERNEL)) == NULL) -+ return(-ENOMEM); -+ -+ el->cluster_id = cluster_id; -+ el->num_cluster_elements = 1; -+ el->hashing_mode = cluster_per_flow; /* Default */ -+ el->hashing_id = 0; -+ -+ memset(el->sk, 0, sizeof(el->sk)); -+ el->sk[0] = sock; -+ el->next = ring_cluster_list; -+ ring_cluster_list = el; -+ pfr->cluster_id = cluster_id; -+ -+ return(0); /* 0 = OK */ -+} -+ -+/* ************************************* */ -+ -+/* Code taken/inspired from core/sock.c */ -+static int ring_setsockopt(struct socket *sock, -+ int level, int optname, -+ char *optval, int optlen) -+{ -+ struct ring_opt *pfr = ring_sk(sock->sk); -+ int val, found, ret = 0; -+ u_int cluster_id; -+ char devName[8]; -+ -+ if((optlen<sizeof(int)) || (pfr == NULL)) -+ return(-EINVAL); -+ -+ if (get_user(val, (int *)optval)) -+ return -EFAULT; -+ -+ found = 1; -+ -+ switch(optname) -+ { -+ case SO_ATTACH_FILTER: -+ ret = -EINVAL; -+ if (optlen == sizeof(struct sock_fprog)) { -+ unsigned int fsize; -+ struct sock_fprog fprog; -+ struct sk_filter *filter; -+ -+ ret = -EFAULT; -+ -+ /* -+ NOTE -+ -+ Do not call copy_from_user within a held -+ splinlock (e.g. ring_mgmt_lock) as this caused -+ problems when certain debugging was enabled under -+ 2.6.5 -- including hard lockups of the machine. -+ */ -+ if(copy_from_user(&fprog, optval, sizeof(fprog))) -+ break; -+ -+ fsize = sizeof(struct sock_filter) * fprog.len; -+ filter = kmalloc(fsize, GFP_KERNEL); -+ -+ if(filter == NULL) { -+ ret = -ENOMEM; -+ break; -+ } -+ -+ if(copy_from_user(filter->insns, fprog.filter, fsize)) -+ break; -+ -+ filter->len = fprog.len; -+ -+ if(sk_chk_filter(filter->insns, filter->len) != 0) { -+ /* Bad filter specified */ -+ kfree(filter); -+ pfr->bpfFilter = NULL; -+ break; -+ } -+ -+ /* get the lock, set the filter, release the lock */ -+ write_lock(&ring_mgmt_lock); -+ pfr->bpfFilter = filter; -+ write_unlock(&ring_mgmt_lock); -+ } -+ ret = 0; -+ break; -+ -+ case SO_DETACH_FILTER: -+ write_lock(&ring_mgmt_lock); -+ found = 1; -+ if(pfr->bpfFilter != NULL) { -+ kfree(pfr->bpfFilter); -+ pfr->bpfFilter = NULL; -+ write_unlock(&ring_mgmt_lock); -+ break; -+ } -+ ret = -ENONET; -+ break; -+ -+ case SO_ADD_TO_CLUSTER: -+ if (optlen!=sizeof(val)) -+ return -EINVAL; -+ -+ if (copy_from_user(&cluster_id, optval, sizeof(cluster_id))) -+ return -EFAULT; -+ -+ write_lock(&ring_mgmt_lock); -+ ret = add_to_cluster(sock->sk, pfr, cluster_id); -+ write_unlock(&ring_mgmt_lock); -+ break; -+ -+ case SO_REMOVE_FROM_CLUSTER: -+ write_lock(&ring_mgmt_lock); -+ ret = remove_from_cluster(sock->sk, pfr); -+ write_unlock(&ring_mgmt_lock); -+ break; -+ -+ case SO_SET_REFLECTOR: -+ if(optlen >= (sizeof(devName)-1)) -+ return -EINVAL; -+ -+ if(optlen > 0) { -+ if(copy_from_user(devName, optval, optlen)) -+ return -EFAULT; -+ } -+ -+ devName[optlen] = '\0'; -+ -+#if defined(RING_DEBUG) -+ printk("+++ SO_SET_REFLECTOR(%s)\n", devName); -+#endif -+ -+ write_lock(&ring_mgmt_lock); -+ pfr->reflector_dev = dev_get_by_name(devName); -+ write_unlock(&ring_mgmt_lock); -+ -+#if defined(RING_DEBUG) -+ if(pfr->reflector_dev != NULL) -+ printk("SO_SET_REFLECTOR(%s): succeded\n", devName); -+ else -+ printk("SO_SET_REFLECTOR(%s): device unknown\n", devName); -+#endif -+ break; -+ -+ default: -+ found = 0; -+ break; -+ } -+ -+ if(found) -+ return(ret); -+ else -+ return(sock_setsockopt(sock, level, optname, optval, optlen)); -+} -+ -+/* ************************************* */ -+ -+static int ring_ioctl(struct socket *sock, -+ unsigned int cmd, unsigned long arg) -+{ -+ switch(cmd) -+ { -+ case SIOCGIFFLAGS: -+ case SIOCSIFFLAGS: -+ case SIOCGIFCONF: -+ case SIOCGIFMETRIC: -+ case SIOCSIFMETRIC: -+ case SIOCGIFMEM: -+ case SIOCSIFMEM: -+ case SIOCGIFMTU: -+ case SIOCSIFMTU: -+ case SIOCSIFLINK: -+ case SIOCGIFHWADDR: -+ case SIOCSIFHWADDR: -+ case SIOCSIFMAP: -+ case SIOCGIFMAP: -+ case SIOCSIFSLAVE: -+ case SIOCGIFSLAVE: -+ case SIOCGIFINDEX: -+ case SIOCGIFNAME: -+ case SIOCGIFCOUNT: -+ case SIOCSIFHWBROADCAST: -+ return(dev_ioctl(cmd,(void *) arg)); -+ -+ default: -+ return -EOPNOTSUPP; -+ } -+ -+ return 0; -+} -+ -+/* ************************************* */ -+ -+static struct proto_ops ring_ops = { -+ .family = PF_RING, -+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)) -+ .owner = THIS_MODULE, -+#endif -+ -+ /* Operations that make no sense on ring sockets. */ -+ .connect = sock_no_connect, -+ .socketpair = sock_no_socketpair, -+ .accept = sock_no_accept, -+ .getname = sock_no_getname, -+ .listen = sock_no_listen, -+ .shutdown = sock_no_shutdown, -+ .sendpage = sock_no_sendpage, -+ .sendmsg = sock_no_sendmsg, -+ .getsockopt = sock_no_getsockopt, -+ -+ /* Now the operations that really occur. */ -+ .release = ring_release, -+ .bind = ring_bind, -+ .mmap = ring_mmap, -+ .poll = ring_poll, -+ .setsockopt = ring_setsockopt, -+ .ioctl = ring_ioctl, -+ .recvmsg = ring_recvmsg, -+}; -+ -+/* ************************************ */ -+ -+static struct net_proto_family ring_family_ops = { -+ .family = PF_RING, -+ .create = ring_create, -+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)) -+ .owner = THIS_MODULE, -+#endif -+}; -+ -+// BD: API changed in 2.6.12, ref: -+// http://svn.clkao.org/svnweb/linux/revision/?rev=28201 -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,11)) -+static struct proto ring_proto = { -+ .name = "PF_RING", -+ .owner = THIS_MODULE, -+ .obj_size = sizeof(struct sock), -+}; -+#endif -+ -+/* ************************************ */ -+ -+static void __exit ring_exit(void) -+{ -+ struct list_head *ptr; -+ struct ring_element *entry; -+ -+ for(ptr = ring_table.next; ptr != &ring_table; ptr = ptr->next) { -+ entry = list_entry(ptr, struct ring_element, list); -+ kfree(entry); -+ } -+ -+ while(ring_cluster_list != NULL) { -+ struct ring_cluster *next = ring_cluster_list->next; -+ kfree(ring_cluster_list); -+ ring_cluster_list = next; -+ } -+ -+ set_skb_ring_handler(NULL); -+ set_buffer_ring_handler(NULL); -+ sock_unregister(PF_RING); -+ -+ printk("PF_RING shut down.\n"); -+} -+ -+/* ************************************ */ -+ -+static int __init ring_init(void) -+{ -+ printk("Welcome to PF_RING %s\n(C) 2004 L.Deri <deri@ntop.org>\n", -+ RING_VERSION); -+ -+ INIT_LIST_HEAD(&ring_table); -+ ring_cluster_list = NULL; -+ -+ sock_register(&ring_family_ops); -+ -+ set_skb_ring_handler(skb_ring_handler); -+ set_buffer_ring_handler(buffer_ring_handler); -+ -+ if(get_buffer_ring_handler() != buffer_ring_handler) { -+ printk("PF_RING: set_buffer_ring_handler FAILED\n"); -+ -+ set_skb_ring_handler(NULL); -+ set_buffer_ring_handler(NULL); -+ sock_unregister(PF_RING); -+ return -1; -+ } else { -+ printk("PF_RING: bucket length %d bytes\n", bucket_len); -+ printk("PF_RING: ring slots %d\n", num_slots); -+ printk("PF_RING: sample rate %d [1=no sampling]\n", sample_rate); -+ printk("PF_RING: capture TX %s\n", -+ enable_tx_capture ? "Yes [RX+TX]" : "No [RX only]"); -+ printk("PF_RING: transparent mode %s\n", -+ transparent_mode ? "Yes" : "No"); -+ -+ printk("PF_RING initialized correctly.\n"); -+ return 0; -+ } -+} -+ -+module_init(ring_init); -+module_exit(ring_exit); -+MODULE_LICENSE("GPL"); -+ -+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)) -+MODULE_ALIAS_NETPROTO(PF_RING); -+#endif |