add devicescape 802.11 stack

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@2791 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 103 insertions, 0 deletions

diff --git a/openwrt/target/linux/package/ieee80211-dscape/src/fifo_qdisc.c b/openwrt/target/linux/package/ieee80211-dscape/src/fifo_qdisc.c
new file mode 100644
index 000000000..95bc0b577
--- /dev/null
+++ b/openwrt/target/linux/package/ieee80211-dscape/src/fifo_qdisc.c
@@ -0,0 +1,103 @@
+/*
+ * Copyright 2005, Devicescape Software, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * If building without CONFIG_NET_SCHED we need a simple
+ * fifo qdisc to install by default as the sub-qdisc.
+ * This is a simple replacement for sch_fifo.
+ */
+
+#include <linux/config.h>
+#include <linux/version.h>
+#include <linux/netdevice.h>
+#include <net/ieee80211.h>
+#include "ieee80211_i.h"
+#include "wme.h"
+
+static int pfifo_enqueue(struct sk_buff *skb, struct Qdisc* qd)
+{
+	struct sk_buff_head *q = qdisc_priv(qd);
+
+	if (skb_queue_len(q) > qd->dev->tx_queue_len) {
+		qd->qstats.drops++;
+		kfree_skb(skb);
+		return NET_XMIT_DROP;
+	}
+	
+	skb_queue_tail(q, skb);
+	qd->q.qlen++;
+	qd->bstats.bytes += skb->len;
+	qd->bstats.packets++;
+	
+	return NET_XMIT_SUCCESS;
+}
+
+
+static int pfifo_requeue(struct sk_buff *skb, struct Qdisc* qd)
+{
+	struct sk_buff_head *q = qdisc_priv(qd);
+
+	skb_queue_head(q, skb);
+	qd->q.qlen++;
+	qd->bstats.bytes += skb->len;
+	qd->bstats.packets++;
+	
+	return NET_XMIT_SUCCESS;
+}
+
+
+static struct sk_buff *pfifo_dequeue(struct Qdisc* qd)
+{
+	struct sk_buff_head *q = qdisc_priv(qd);
+
+	return skb_dequeue(q);
+}
+
+
+static int pfifo_init(struct Qdisc* qd, struct rtattr *opt)
+{
+	struct sk_buff_head *q = qdisc_priv(qd);
+
+	skb_queue_head_init(q);
+	return 0;
+}
+
+
+static void pfifo_reset(struct Qdisc* qd)
+{
+	struct sk_buff_head *q = qdisc_priv(qd);
+
+	skb_queue_purge(q);
+	qd->q.qlen = 0;
+}
+
+
+static int pfifo_dump(struct Qdisc *qd, struct sk_buff *skb)
+{
+	return skb->len;
+}
+
+
+struct Qdisc_ops pfifo_qdisc_ops =
+{
+	.next = NULL,
+	.cl_ops = NULL,
+	.id = "ieee80211_pfifo",
+	.priv_size = sizeof(struct sk_buff_head),
+
+	.enqueue = pfifo_enqueue,
+	.dequeue = pfifo_dequeue,
+	.requeue = pfifo_requeue,
+	.drop = NULL,
+
+	.init = pfifo_init,
+	.reset = pfifo_reset,
+	.destroy = NULL,
+	.change = NULL,
+
+	.dump = pfifo_dump,
+};
+