diff options
Diffstat (limited to 'target/linux/ar71xx/files/net/dsa/tag_qinq.c')
| -rw-r--r-- | target/linux/ar71xx/files/net/dsa/tag_qinq.c | 127 |
1 files changed, 0 insertions, 127 deletions
diff --git a/target/linux/ar71xx/files/net/dsa/tag_qinq.c b/target/linux/ar71xx/files/net/dsa/tag_qinq.c deleted file mode 100644 index 68bcc3828..000000000 --- a/target/linux/ar71xx/files/net/dsa/tag_qinq.c +++ /dev/null @@ -1,127 +0,0 @@ -/* - * net/dsa/tag_qinq.c - QinQ tag format handling - * Copyright (c) 2010 Gabor Juhos <juhosg@openwrt.org> - * - * This file was based on: - * net/dsa/tag_edsa.c - Ethertype DSA tagging - * Copyright (c) 2008-2009 Marvell Semiconductor - * - * 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. - */ - -#include <linux/etherdevice.h> -#include <linux/list.h> -#include <linux/netdevice.h> -#include <linux/if_vlan.h> - -#include "dsa_priv.h" - -netdev_tx_t qinq_xmit(struct sk_buff *skb, struct net_device *dev) -{ - struct dsa_slave_priv *p = netdev_priv(dev); - struct vlan_ethhdr *veth; - unsigned int len; - int ret; - - if (skb_cow_head(skb, VLAN_HLEN) < 0) - goto out_free_skb; - - veth = (struct vlan_ethhdr *)skb_push(skb, VLAN_HLEN); - - /* Move the mac addresses to the beginning of the new header. */ - memmove(skb->data, skb->data + VLAN_HLEN, 2 * VLAN_ETH_ALEN); - skb->mac_header -= VLAN_HLEN; - - /* setup VLAN header fields */ - veth->h_vlan_proto = htons(ETH_P_QINQ); - veth->h_vlan_TCI = htons(p->port); - - len = skb->len; - skb->protocol = htons(ETH_P_QINQ); - skb->dev = p->parent->dst->master_netdev; - - ret = dev_queue_xmit(skb); - if (unlikely(ret != NET_XMIT_SUCCESS)) - goto out_dropped; - - dev->stats.tx_packets++; - dev->stats.tx_bytes += len; - - return NETDEV_TX_OK; - - out_free_skb: - kfree_skb(skb); - out_dropped: - dev->stats.tx_dropped++; - return NETDEV_TX_OK; -} - -static int qinq_rcv(struct sk_buff *skb, struct net_device *dev, - struct packet_type *pt, struct net_device *orig_dev) -{ - struct dsa_switch_tree *dst; - struct dsa_switch *ds; - struct vlan_hdr *vhdr; - int source_port; - - dst = dev->dsa_ptr; - if (unlikely(dst == NULL)) - goto out_drop; - ds = dst->ds[0]; - - skb = skb_unshare(skb, GFP_ATOMIC); - if (skb == NULL) - goto out; - - if (unlikely(!pskb_may_pull(skb, VLAN_HLEN))) - goto out_drop; - - vhdr = (struct vlan_hdr *)skb->data; - source_port = ntohs(vhdr->h_vlan_TCI) & VLAN_VID_MASK; - if (source_port >= DSA_MAX_PORTS || ds->ports[source_port] == NULL) - goto out_drop; - - /* Remove the outermost VLAN tag and update checksum. */ - skb_pull_rcsum(skb, VLAN_HLEN); - memmove(skb->data - ETH_HLEN, - skb->data - ETH_HLEN - VLAN_HLEN, - 2 * ETH_ALEN); - - skb->dev = ds->ports[source_port]; - skb_push(skb, ETH_HLEN); - skb->pkt_type = PACKET_HOST; - skb->protocol = eth_type_trans(skb, skb->dev); - - skb->dev->stats.rx_packets++; - skb->dev->stats.rx_bytes += skb->len; - - netif_receive_skb(skb); - - return 0; - - out_drop: - kfree_skb(skb); - out: - return 0; -} - -static struct packet_type qinq_packet_type __read_mostly = { - .type = cpu_to_be16(ETH_P_QINQ), - .func = qinq_rcv, -}; - -static int __init qinq_init_module(void) -{ - dev_add_pack(&qinq_packet_type); - return 0; -} -module_init(qinq_init_module); - -static void __exit qinq_cleanup_module(void) -{ - dev_remove_pack(&qinq_packet_type); -} -module_exit(qinq_cleanup_module); |