nuke the old d80211 backport - will be replaced soon

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@7340 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 0 insertions, 679 deletions

diff --git a/package/d80211/src/wme.c b/package/d80211/src/wme.c
deleted file mode 100644
index 76e2c4b0c3..0000000000
--- a/package/d80211/src/wme.c
+++ /dev/null
@@ -1,679 +0,0 @@
-/*
- * Copyright 2004, Instant802 Networks, 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.
- */
-
-#include <linux/netdevice.h>
-#include <linux/skbuff.h>
-#include <linux/module.h>
-#include <linux/if_arp.h>
-#include <linux/types.h>
-#include <net/ip.h>
-#include <net/pkt_sched.h>
-
-#include <net/d80211.h>
-#include "ieee80211_i.h"
-#include "wme.h"
-
-#define CHILD_QDISC_OPS pfifo_qdisc_ops
-
-static inline int WLAN_FC_IS_QOS_DATA(u16 fc)
-{
-	return (fc & 0x8C) == 0x88;
-}
-
-
-ieee80211_txrx_result
-ieee80211_rx_h_parse_qos(struct ieee80211_txrx_data *rx)
-{
-	u8 *data = rx->skb->data;
-	int tid;
-
-	/* does the frame have a qos control field? */
-	if (WLAN_FC_IS_QOS_DATA(rx->fc)) {
-		u8 *qc = data + ieee80211_get_hdrlen(rx->fc) - QOS_CONTROL_LEN;
-		/* frame has qos control */
-		tid = qc[0] & QOS_CONTROL_TID_MASK;
-	} else {
-		if (unlikely((rx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)) {
-			/* Separate TID for management frames */
-			tid = NUM_RX_DATA_QUEUES - 1;
-		} else {
-			/* no qos control present */
-			tid = 0; /* 802.1d - Best Effort */
-		}
-	}
-#ifdef CONFIG_D80211_DEBUG_COUNTERS
-	I802_DEBUG_INC(rx->local->wme_rx_queue[tid]);
-	if (rx->sta) {
-		I802_DEBUG_INC(rx->sta->wme_rx_queue[tid]);
-	}
-#endif /* CONFIG_D80211_DEBUG_COUNTERS */
-
-	rx->u.rx.queue = tid;
-	/* Set skb->priority to 1d tag if highest order bit of TID is not set.
-	 * For now, set skb->priority to 0 for other cases. */
-	rx->skb->priority = (tid > 7) ? 0 : tid;
-
-	return TXRX_CONTINUE;
-}
-
-
-ieee80211_txrx_result
-ieee80211_rx_h_remove_qos_control(struct ieee80211_txrx_data *rx)
-{
-	u16 fc = rx->fc;
-	u8 *data = rx->skb->data;
-	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) data;
-
-	if (!WLAN_FC_IS_QOS_DATA(fc))
-		return TXRX_CONTINUE;
-
-	/* remove the qos control field, update frame type and meta-data */
-	memmove(data + 2, data, ieee80211_get_hdrlen(fc) - 2);
-	hdr = (struct ieee80211_hdr *) skb_pull(rx->skb, 2);
-	/* change frame type to non QOS */
-	rx->fc = fc &= ~IEEE80211_STYPE_QOS_DATA;
-	hdr->frame_control = cpu_to_le16(fc);
-
-	return TXRX_CONTINUE;
-}
-
-
-/* maximum number of hardware queues we support. */
-#define TC_80211_MAX_QUEUES 8
-
-struct ieee80211_sched_data
-{
-	struct tcf_proto *filter_list;
-	struct Qdisc *queues[TC_80211_MAX_QUEUES];
-	struct sk_buff_head requeued[TC_80211_MAX_QUEUES];
-};
-
-
-/* given a data frame determine the 802.1p/1d tag to use */
-static inline unsigned classify_1d(struct sk_buff *skb, struct Qdisc *qd)
-{
-	struct iphdr *ip;
-	int dscp;
-	int offset;
-
-#ifdef CONFIG_NET_SCHED
-	struct ieee80211_sched_data *q = qdisc_priv(qd);
-	struct tcf_result res = { -1, 0 };
-
-	/* if there is a user set filter list, call out to that */
-	if (q->filter_list) {
-		tc_classify(skb, q->filter_list, &res);
-		if (res.class != -1)
-			return res.class;
-	}
-#endif /* CONFIG_NET_SCHED */
-
-	/* skb->priority values from 256->263 are magic values to
-	 * directly indicate a specific 802.1d priority.
-	 * This is used to allow 802.1d priority to be passed directly in
-	 * from VLAN tags, etc. */
-	if (skb->priority >= 256 && skb->priority <= 263)
-		return skb->priority - 256;
-
-	/* check there is a valid IP header present */
-	offset = ieee80211_get_hdrlen_from_skb(skb) + 8 /* LLC + proto */;
-	if (skb->protocol != __constant_htons(ETH_P_IP) ||
-	    skb->len < offset + sizeof(*ip))
-		return 0;
-
-	ip = (struct iphdr *) (skb->data + offset);
-
-	dscp = ip->tos & 0xfc;
-	if (dscp & 0x1c)
-		return 0;
-	return dscp >> 5;
-}
-
-
-static inline int wme_downgrade_ac(struct sk_buff *skb)
-{
-	switch (skb->priority) {
-	case 6:
-	case 7:
-		skb->priority = 5; /* VO -> VI */
-		return 0;
-	case 4:
-	case 5:
-		skb->priority = 3; /* VI -> BE */
-		return 0;
-	case 0:
-	case 3:
-		skb->priority = 2; /* BE -> BK */
-		return 0;
-	default:
-		return -1;
-	}
-}
-
-
-/* positive return value indicates which queue to use
- * negative return value indicates to drop the frame */
-static inline int classify80211(struct sk_buff *skb, struct Qdisc *qd)
-{
-	struct ieee80211_local *local = qd->dev->ieee80211_ptr;
-	struct ieee80211_tx_packet_data *pkt_data =
-		(struct ieee80211_tx_packet_data *) skb->cb;
-	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
-	unsigned short fc = le16_to_cpu(hdr->frame_control);
-	int qos;
-	const int ieee802_1d_to_ac[8] = { 2, 3, 3, 2, 1, 1, 0, 0 };
-
-	/* see if frame is data or non data frame */
-	if (unlikely((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA)) {
-		/* management frames go on AC_VO queue, but are sent
-		* without QoS control fields */
-		return IEEE80211_TX_QUEUE_DATA0;
-	}
-
-	if (unlikely(pkt_data->mgmt_iface)) {
-		/* Data frames from hostapd (mainly, EAPOL) use AC_VO
-		* and they will include QoS control fields if
-		* the target STA is using WME. */
-		skb->priority = 7;
-		return ieee802_1d_to_ac[skb->priority];
-	}
-
-	/* is this a QoS frame? */
-	qos = fc & IEEE80211_STYPE_QOS_DATA;
-
-	if (!qos) {
-		skb->priority = 0; /* required for correct WPA/11i MIC */
-		return ieee802_1d_to_ac[skb->priority];
-	}
-
-	/* use the data classifier to determine what 802.1d tag the
-	* data frame has */
-	skb->priority = classify_1d(skb, qd);
-
-	/* incase we are a client verify acm is not set for this ac */
-	while (unlikely(local->wmm_acm & BIT(skb->priority))) {
-		if (wme_downgrade_ac(skb)) {
-			/* No AC with lower priority has acm=0,
-			* drop packet. */
-			return -1;
-		}
-	}
-
-	/* look up which queue to use for frames with this 1d tag */
-	return ieee802_1d_to_ac[skb->priority];
-}
-
-
-static int wme_qdiscop_enqueue(struct sk_buff *skb, struct Qdisc* qd)
-{
-	struct ieee80211_local *local = qd->dev->ieee80211_ptr;
-	struct ieee80211_sched_data *q = qdisc_priv(qd);
-	struct ieee80211_tx_packet_data *pkt_data =
-		(struct ieee80211_tx_packet_data *) skb->cb;
-	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
-	unsigned short fc = le16_to_cpu(hdr->frame_control);
-	struct Qdisc *qdisc;
-	int err, queue;
-
-	if (pkt_data->requeue) {
-		skb_queue_tail(&q->requeued[pkt_data->queue], skb);
-		return 0;
-	}
-
-	queue = classify80211(skb, qd);
-
-	/* now we know the 1d priority, fill in the QoS header if there is one
-	 */
-	if (WLAN_FC_IS_QOS_DATA(fc)) {
-		u8 *p = skb->data + ieee80211_get_hdrlen(fc) - 2;
-		u8 qos_hdr = skb->priority & QOS_CONTROL_TAG1D_MASK;
-		if (local->wifi_wme_noack_test)
-			qos_hdr |= QOS_CONTROL_ACK_POLICY_NOACK <<
-					QOS_CONTROL_ACK_POLICY_SHIFT;
-		/* qos header is 2 bytes, second reserved */
-		*p = qos_hdr;
-		p++;
-		*p = 0;
-	}
-
-	if (unlikely(queue >= local->hw.queues)) {
-#if 0
-		if (net_ratelimit()) {
-			printk(KERN_DEBUG "%s - queue=%d (hw does not "
-			       "support) -> %d\n",
-			       __func__, queue, local->hw.queues - 1);
-		}
-#endif
-		queue = local->hw.queues - 1;
-	}
-
-	if (unlikely(queue < 0)) {
-			kfree_skb(skb);
-			err = NET_XMIT_DROP;
-	} else {
-		pkt_data->queue = (unsigned int) queue;
-		qdisc = q->queues[queue];
-		err = qdisc->enqueue(skb, qdisc);
-		if (err == NET_XMIT_SUCCESS) {
-			qd->q.qlen++;
-			qd->bstats.bytes += skb->len;
-			qd->bstats.packets++;
-			return NET_XMIT_SUCCESS;
-		}
-	}
-	qd->qstats.drops++;
-	return err;
-}
-
-
-/* TODO: clean up the cases where master_hard_start_xmit
- * returns non 0 - it shouldn't ever do that. Once done we
- * can remove this function */
-static int wme_qdiscop_requeue(struct sk_buff *skb, struct Qdisc* qd)
-{
-	struct ieee80211_sched_data *q = qdisc_priv(qd);
-	struct ieee80211_tx_packet_data *pkt_data =
-		(struct ieee80211_tx_packet_data *) skb->cb;
-	struct Qdisc *qdisc;
-	int err;
-
-	/* we recorded which queue to use earlier! */
-	qdisc = q->queues[pkt_data->queue];
-
-	if ((err = qdisc->ops->requeue(skb, qdisc)) == 0) {
-		qd->q.qlen++;
-		return 0;
-	}
-	qd->qstats.drops++;
-	return err;
-}
-
-
-static struct sk_buff *wme_qdiscop_dequeue(struct Qdisc* qd)
-{
-	struct ieee80211_sched_data *q = qdisc_priv(qd);
-	struct net_device *dev = qd->dev;
-	struct ieee80211_local *local = dev->ieee80211_ptr;
-	struct ieee80211_hw *hw = &local->hw;
-	struct sk_buff *skb;
-	struct Qdisc *qdisc;
-	int queue;
-
-	/* check all the h/w queues in numeric/priority order */
-	for (queue = 0; queue < hw->queues; queue++) {
-		/* see if there is room in this hardware queue */
-		if (test_bit(IEEE80211_LINK_STATE_XOFF,
-			     &local->state[queue]) ||
-		    test_bit(IEEE80211_LINK_STATE_PENDING,
-			     &local->state[queue]))
-			continue;
-
-		/* there is space - try and get a frame */
-		skb = skb_dequeue(&q->requeued[queue]);
-		if (skb)
-			return skb;
-
-		qdisc = q->queues[queue];
-		skb = qdisc->dequeue(qdisc);
-		if (skb) {
-			qd->q.qlen--;
-			return skb;
-		}
-	}
-	/* returning a NULL here when all the h/w queues are full means we
-	 * never need to call netif_stop_queue in the driver */
-	return NULL;
-}
-
-
-static void wme_qdiscop_reset(struct Qdisc* qd)
-{
-	struct ieee80211_sched_data *q = qdisc_priv(qd);
-	struct ieee80211_local *local = qd->dev->ieee80211_ptr;
-	struct ieee80211_hw *hw = &local->hw;
-	int queue;
-
-	/* QUESTION: should we have some hardware flush functionality here? */
-
-	for (queue = 0; queue < hw->queues; queue++) {
-		skb_queue_purge(&q->requeued[queue]);
-		qdisc_reset(q->queues[queue]);
-	}
-	qd->q.qlen = 0;
-}
-
-
-static void wme_qdiscop_destroy(struct Qdisc* qd)
-{
-	struct ieee80211_sched_data *q = qdisc_priv(qd);
-	struct ieee80211_local *local = qd->dev->ieee80211_ptr;
-	struct ieee80211_hw *hw = &local->hw;
-	struct tcf_proto *tp;
-	int queue;
-
-	while ((tp = q->filter_list) != NULL) {
-		q->filter_list = tp->next;
-		tp->ops->destroy(tp);
-	}
-
-	for (queue=0; queue < hw->queues; queue++) {
-		skb_queue_purge(&q->requeued[queue]);
-		qdisc_destroy(q->queues[queue]);
-		q->queues[queue] = &noop_qdisc;
-	}
-}
-
-
-/* called whenever parameters are updated on existing qdisc */
-static int wme_qdiscop_tune(struct Qdisc *qd, struct rtattr *opt)
-{
-/*	struct ieee80211_sched_data *q = qdisc_priv(qd);
-*/
-	/* check our options block is the right size */
-	/* copy any options to our local structure */
-/*	Ignore options block for now - always use static mapping
-	struct tc_ieee80211_qopt *qopt = RTA_DATA(opt);
-
-	if (opt->rta_len < RTA_LENGTH(sizeof(*qopt)))
-		return -EINVAL;
-	memcpy(q->tag2queue, qopt->tag2queue, sizeof(qopt->tag2queue));
-*/
-	return 0;
-}
-
-
-/* called during initial creation of qdisc on device */
-static int wme_qdiscop_init(struct Qdisc *qd, struct rtattr *opt)
-{
-	struct ieee80211_sched_data *q = qdisc_priv(qd);
-	struct net_device *dev = qd->dev;
-	struct ieee80211_local *local = dev->ieee80211_ptr;
-	int queues = local->hw.queues;
-	int err = 0, i;
-
-	/* check this device is an ieee80211 master type device */
-	if (dev->type != ARPHRD_IEEE80211)
-		return -EINVAL;
-
-	/* check that there is no qdisc currently attached to device
-	 * this ensures that we will be the root qdisc. (I can't find a better
-	 * way to test this explicitly) */
-	if (dev->qdisc_sleeping != &noop_qdisc)
-		return -EINVAL;
-
-	if (qd->flags & TCQ_F_INGRESS)
-		return -EINVAL;
-
-	/* if options were passed in, set them */
-	if (opt) {
-		err = wme_qdiscop_tune(qd, opt);
-	}
-
-	/* create child queues */
-	for (i = 0; i < queues; i++) {
-		skb_queue_head_init(&q->requeued[i]);
-		q->queues[i] = qdisc_create_dflt(qd->dev, &CHILD_QDISC_OPS,
-						 qd->handle);
-		if (q->queues[i] == 0) {
-			q->queues[i] = &noop_qdisc;
-			printk(KERN_ERR "%s child qdisc %i creation failed", dev->name, i);
-		}
-	}
-
-	return err;
-}
-
-static int wme_qdiscop_dump(struct Qdisc *qd, struct sk_buff *skb)
-{
-/*	struct ieee80211_sched_data *q = qdisc_priv(qd);
-	unsigned char *p = skb->tail;
-	struct tc_ieee80211_qopt opt;
-
-	memcpy(&opt.tag2queue, q->tag2queue, TC_80211_MAX_TAG + 1);
-	RTA_PUT(skb, TCA_OPTIONS, sizeof(opt), &opt);
-*/	return skb->len;
-/*
-rtattr_failure:
-	skb_trim(skb, p - skb->data);*/
-	return -1;
-}
-
-
-static int wme_classop_graft(struct Qdisc *qd, unsigned long arg,
-			     struct Qdisc *new, struct Qdisc **old)
-{
-	struct ieee80211_sched_data *q = qdisc_priv(qd);
-	struct ieee80211_local *local = qd->dev->ieee80211_ptr;
-	struct ieee80211_hw *hw = &local->hw;
-	unsigned long queue = arg - 1;
-
-	if (queue >= hw->queues)
-		return -EINVAL;
-
-	if (!new)
-		new = &noop_qdisc;
-
-	sch_tree_lock(qd);
-	*old = q->queues[queue];
-	q->queues[queue] = new;
-	qdisc_reset(*old);
-	sch_tree_unlock(qd);
-
-	return 0;
-}
-
-
-static struct Qdisc *
-wme_classop_leaf(struct Qdisc *qd, unsigned long arg)
-{
-	struct ieee80211_sched_data *q = qdisc_priv(qd);
-	struct ieee80211_local *local = qd->dev->ieee80211_ptr;
-	struct ieee80211_hw *hw = &local->hw;
-	unsigned long queue = arg - 1;
-
-	if (queue >= hw->queues)
-		return NULL;
-
-	return q->queues[queue];
-}
-
-
-static unsigned long wme_classop_get(struct Qdisc *qd, u32 classid)
-{
-	struct ieee80211_local *local = qd->dev->ieee80211_ptr;
-	struct ieee80211_hw *hw = &local->hw;
-	unsigned long queue = TC_H_MIN(classid);
-
-	if (queue - 1 >= hw->queues)
-		return 0;
-
-	return queue;
-}
-
-
-static unsigned long wme_classop_bind(struct Qdisc *qd, unsigned long parent,
-				      u32 classid)
-{
-	return wme_classop_get(qd, classid);
-}
-
-
-static void wme_classop_put(struct Qdisc *q, unsigned long cl)
-{
-	/* printk(KERN_DEBUG "entering %s\n", __func__); */
-}
-
-
-static int wme_classop_change(struct Qdisc *qd, u32 handle, u32 parent,
-			      struct rtattr **tca, unsigned long *arg)
-{
-	unsigned long cl = *arg;
-	struct ieee80211_local *local = qd->dev->ieee80211_ptr;
-	struct ieee80211_hw *hw = &local->hw;
-	/* printk(KERN_DEBUG "entering %s\n", __func__); */
-
-	if (cl - 1 > hw->queues)
-		return -ENOENT;
-
-	/* TODO: put code to program hardware queue parameters here,
-	 * to allow programming from tc command line */
-
-	return 0;
-}
-
-
-/* we don't support deleting hardware queues
- * when we add WMM-SA support - TSPECs may be deleted here */
-static int wme_classop_delete(struct Qdisc *qd, unsigned long cl)
-{
-	struct ieee80211_local *local = qd->dev->ieee80211_ptr;
-	struct ieee80211_hw *hw = &local->hw;
-	/* printk(KERN_DEBUG "entering %s\n", __func__); */
-
-	if (cl - 1 > hw->queues)
-		return -ENOENT;
-	return 0;
-}
-
-
-static int wme_classop_dump_class(struct Qdisc *qd, unsigned long cl,
-				  struct sk_buff *skb, struct tcmsg *tcm)
-{
-	struct ieee80211_sched_data *q = qdisc_priv(qd);
-	struct ieee80211_local *local = qd->dev->ieee80211_ptr;
-	struct ieee80211_hw *hw = &local->hw;
-	/* printk(KERN_DEBUG "entering %s\n", __func__); */
-
-	if (cl - 1 > hw->queues)
-		return -ENOENT;
-	tcm->tcm_handle = TC_H_MIN(cl);
-	tcm->tcm_parent = qd->handle;
-	tcm->tcm_info = q->queues[cl-1]->handle; /* do we need this? */
-	return 0;
-}
-
-
-static void wme_classop_walk(struct Qdisc *qd, struct qdisc_walker *arg)
-{
-	struct ieee80211_local *local = qd->dev->ieee80211_ptr;
-	struct ieee80211_hw *hw = &local->hw;
-	int queue;
-	/* printk(KERN_DEBUG "entering %s\n", __func__); */
-
-	if (arg->stop)
-		return;
-
-	for (queue = 0; queue < hw->queues; queue++) {
-		if (arg->count < arg->skip) {
-			arg->count++;
-			continue;
-		}
-		/* we should return classids for our internal queues here
-		 * as well as the external ones */
-		if (arg->fn(qd, queue+1, arg) < 0) {
-			arg->stop = 1;
-			break;
-		}
-		arg->count++;
-	}
-}
-
-
-static struct tcf_proto ** wme_classop_find_tcf(struct Qdisc *qd,
-						unsigned long cl)
-{
-	struct ieee80211_sched_data *q = qdisc_priv(qd);
-	/* printk("entering %s\n", __func__); */
-
-	if (cl)
-		return NULL;
-
-	return &q->filter_list;
-}
-
-
-/* this qdisc is classful (i.e. has classes, some of which may have leaf qdiscs attached)
- * - these are the operations on the classes */
-static struct Qdisc_class_ops class_ops =
-{
-	.graft = wme_classop_graft,
-	.leaf = wme_classop_leaf,
-
-	.get = wme_classop_get,
-	.put = wme_classop_put,
-	.change = wme_classop_change,
-	.delete = wme_classop_delete,
-	.walk = wme_classop_walk,
-
-	.tcf_chain = wme_classop_find_tcf,
-	.bind_tcf = wme_classop_bind,
-	.unbind_tcf = wme_classop_put,
-
-	.dump = wme_classop_dump_class,
-};
-
-
-/* queueing discipline operations */
-static struct Qdisc_ops wme_qdisc_ops =
-{
-	.next = NULL,
-	.cl_ops = &class_ops,
-	.id = "ieee80211",
-	.priv_size = sizeof(struct ieee80211_sched_data),
-
-	.enqueue = wme_qdiscop_enqueue,
-	.dequeue = wme_qdiscop_dequeue,
-	.requeue = wme_qdiscop_requeue,
-	.drop = NULL, /* drop not needed since we are always the root qdisc */
-
-	.init = wme_qdiscop_init,
-	.reset = wme_qdiscop_reset,
-	.destroy = wme_qdiscop_destroy,
-	.change = wme_qdiscop_tune,
-
-	.dump = wme_qdiscop_dump,
-};
-
-
-void ieee80211_install_qdisc(struct net_device *dev)
-{
-	struct Qdisc *qdisc;
-
-	qdisc = qdisc_create_dflt(dev, &wme_qdisc_ops, TC_H_ROOT);
-	if (!qdisc) {
-		printk(KERN_ERR "%s: qdisc installation failed\n", dev->name);
-		return;
-	}
-
-	/* same handle as would be allocated by qdisc_alloc_handle() */
-	qdisc->handle = 0x80010000;
-
-	qdisc_lock_tree(dev);
-	list_add_tail(&qdisc->list, &dev->qdisc_list);
-	dev->qdisc_sleeping = qdisc;
-	qdisc_unlock_tree(dev);
-}
-
-
-int ieee80211_wme_register(void)
-{
-	int err = 0;
-
-#ifdef CONFIG_NET_SCHED
-	err = register_qdisc(&wme_qdisc_ops);
-#endif
-	return err;
-}
-
-
-void ieee80211_wme_unregister(void)
-{
-#ifdef CONFIG_NET_SCHED
-	unregister_qdisc(&wme_qdisc_ops);
-#endif
-}