add d80211 from a recent wireless-dev checkout

[openwrt/svn-archive/archive.git] / package / d80211 / src / fifo_qdisc.c

diff --git a/package/d80211/src/fifo_qdisc.c b/package/d80211/src/fifo_qdisc.c
new file mode 100644 (file)
index 0000000..12aaed5
--- /dev/null
+++ b/package/d80211/src/fifo_qdisc.c
@@ -0,0 +1,102 @@
+/*
+ * 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/skbuff.h>
+#include <net/pkt_sched.h>
+#include <net/d80211.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,
+};
+