Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next

Pull networking changes from David S Miller:

 1) Remove the ipv4 routing cache.  Now lookups go directly into the FIB
    trie and use prebuilt routes cached there.

    No more garbage collection, no more rDOS attacks on the routing
    cache.  Instead we now get predictable and consistent performance,
    no matter what the pattern of traffic we service.

    This has been almost 2 years in the making.  Special thanks to
    Julian Anastasov, Eric Dumazet, Steffen Klassert, and others who
    have helped along the way.

    I'm sure that with a change of this magnitude there will be some
    kind of fallout, but such things ought the be simple to fix at this
    point.  Luckily I'm not European so I'll be around all of August to
    fix things :-)

    The major stages of this work here are each fronted by a forced
    merge commit whose commit message contains a top-level description
    of the motivations and implementation issues.

 2) Pre-demux of established ipv4 TCP sockets, saves a route demux on
    input.

 3) TCP SYN/ACK performance tweaks from Eric Dumazet.

 4) Add namespace support for netfilter L4 conntrack helpers, from Gao
    Feng.

 5) Add config mechanism for Energy Efficient Ethernet to ethtool, from
    Yuval Mintz.

 6) Remove quadratic behavior from /proc/net/unix, from Eric Dumazet.

 7) Support for connection tracker helpers in userspace, from Pablo
    Neira Ayuso.

 8) Allow userspace driven TX load balancing functions in TEAM driver,
    from Jiri Pirko.

 9) Kill off NLMSG_PUT and RTA_PUT macros, more gross stuff with
    embedded gotos.

10) TCP Small Queues, essentially minimize the amount of TCP data queued
    up in the packet scheduler layer.  Whereas the existing BQL (Byte
    Queue Limits) limits the pkt_sched --> netdevice queuing levels,
    this controls the TCP --> pkt_sched queueing levels.

    From Eric Dumazet.

11) Reduce the number of get_page/put_page ops done on SKB fragments,
    from Alexander Duyck.

12) Implement protection against blind resets in TCP (RFC 5961), from
    Eric Dumazet.

13) Support the client side of TCP Fast Open, basically the ability to
    send data in the SYN exchange, from Yuchung Cheng.

    Basically, the sender queues up data with a sendmsg() call using
    MSG_FASTOPEN, then they do the connect() which emits the queued up
    fastopen data.

14) Avoid all the problems we get into in TCP when timers or PMTU events
    hit a locked socket.  The TCP Small Queues changes added a
    tcp_release_cb() that allows us to queue work up to the
    release_sock() caller, and that's what we use here too.  From Eric
    Dumazet.

15) Zero copy on TX support for TUN driver, from Michael S. Tsirkin.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1870 commits)
  genetlink: define lockdep_genl_is_held() when CONFIG_LOCKDEP
  r8169: revert "add byte queue limit support".
  ipv4: Change rt->rt_iif encoding.
  net: Make skb->skb_iif always track skb->dev
  ipv4: Prepare for change of rt->rt_iif encoding.
  ipv4: Remove all RTCF_DIRECTSRC handliing.
  ipv4: Really ignore ICMP address requests/replies.
  decnet: Don't set RTCF_DIRECTSRC.
  net/ipv4/ip_vti.c: Fix __rcu warnings detected by sparse.
  ipv4: Remove redundant assignment
  rds: set correct msg_namelen
  openvswitch: potential NULL deref in sample()
  tcp: dont drop MTU reduction indications
  bnx2x: Add new 57840 device IDs
  tcp: avoid oops in tcp_metrics and reset tcpm_stamp
  niu: Change niu_rbr_fill() to use unlikely() to check niu_rbr_add_page() return value
  niu: Fix to check for dma mapping errors.
  net: Fix references to out-of-scope variables in put_cmsg_compat()
  net: ethernet: davinci_emac: add pm_runtime support
  net: ethernet: davinci_emac: Remove unnecessary #include
  ...

1 files changed, 0 insertions, 529 deletions

diff --git a/drivers/net/wireless/iwmc3200wifi/tx.c b/drivers/net/wireless/iwmc3200wifi/tx.c
deleted file mode 100644
index be98074..0000000
--- a/drivers/net/wireless/iwmc3200wifi/tx.c
+++ /dev/null
@@ -1,529 +0,0 @@
-/*
- * Intel Wireless Multicomm 3200 WiFi driver
- *
- * Copyright (C) 2009 Intel Corporation. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- *   * Redistributions of source code must retain the above copyright
- *     notice, this list of conditions and the following disclaimer.
- *   * Redistributions in binary form must reproduce the above copyright
- *     notice, this list of conditions and the following disclaimer in
- *     the documentation and/or other materials provided with the
- *     distribution.
- *   * Neither the name of Intel Corporation nor the names of its
- *     contributors may be used to endorse or promote products derived
- *     from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- *
- * Intel Corporation <ilw@linux.intel.com>
- * Samuel Ortiz <samuel.ortiz@intel.com>
- * Zhu Yi <yi.zhu@intel.com>
- *
- */
-
-/*
- * iwm Tx theory of operation:
- *
- * 1) We receive a 802.3 frame from the stack
- * 2) We convert it to a 802.11 frame [iwm_xmit_frame]
- * 3) We queue it to its corresponding tx queue [iwm_xmit_frame]
- * 4) We schedule the tx worker. There is one worker per tx
- *    queue. [iwm_xmit_frame]
- * 5) The tx worker is scheduled
- * 6) We go through every queued skb on the tx queue, and for each
- *    and every one of them: [iwm_tx_worker]
- *    a) We check if we have enough Tx credits (see below for a Tx
- *       credits description) for the frame length. [iwm_tx_worker]
- *    b) If we do, we aggregate the Tx frame into a UDMA one, by
- *       concatenating one REPLY_TX command per Tx frame. [iwm_tx_worker]
- *    c) When we run out of credits, or when we reach the maximum
- *       concatenation size, we actually send the concatenated UDMA
- *       frame. [iwm_tx_worker]
- *
- * When we run out of Tx credits, the skbs are filling the tx queue,
- * and eventually we will stop the netdev queue. [iwm_tx_worker]
- * The tx queue is emptied as we're getting new tx credits, by
- * scheduling the tx_worker. [iwm_tx_credit_inc]
- * The netdev queue is started again when we have enough tx credits,
- * and when our tx queue has some reasonable amout of space available
- * (i.e. half of the max size). [iwm_tx_worker]
- */
-
-#include <linux/slab.h>
-#include <linux/skbuff.h>
-#include <linux/netdevice.h>
-#include <linux/ieee80211.h>
-
-#include "iwm.h"
-#include "debug.h"
-#include "commands.h"
-#include "hal.h"
-#include "umac.h"
-#include "bus.h"
-
-#define IWM_UMAC_PAGE_ALLOC_WRAP 0xffff
-
-#define BYTES_TO_PAGES(n)	 (1 + ((n) >> ilog2(IWM_UMAC_PAGE_SIZE)) - \
-				 (((n) & (IWM_UMAC_PAGE_SIZE - 1)) == 0))
-
-#define pool_id_to_queue(id)	 ((id < IWM_TX_CMD_QUEUE) ? id : id - 1)
-#define queue_to_pool_id(q)	 ((q < IWM_TX_CMD_QUEUE) ? q : q + 1)
-
-/* require to hold tx_credit lock */
-static int iwm_tx_credit_get(struct iwm_tx_credit *tx_credit, int id)
-{
-	struct pool_entry *pool = &tx_credit->pools[id];
-	struct spool_entry *spool = &tx_credit->spools[pool->sid];
-	int spool_pages;
-
-	/* number of pages can be taken from spool by this pool */
-	spool_pages = spool->max_pages - spool->alloc_pages +
-		      max(pool->min_pages - pool->alloc_pages, 0);
-
-	return min(pool->max_pages - pool->alloc_pages, spool_pages);
-}
-
-static bool iwm_tx_credit_ok(struct iwm_priv *iwm, int id, int nb)
-{
-	u32 npages = BYTES_TO_PAGES(nb);
-
-	if (npages <= iwm_tx_credit_get(&iwm->tx_credit, id))
-		return 1;
-
-	set_bit(id, &iwm->tx_credit.full_pools_map);
-
-	IWM_DBG_TX(iwm, DBG, "LINK: stop txq[%d], available credit: %d\n",
-		   pool_id_to_queue(id),
-		   iwm_tx_credit_get(&iwm->tx_credit, id));
-
-	return 0;
-}
-
-void iwm_tx_credit_inc(struct iwm_priv *iwm, int id, int total_freed_pages)
-{
-	struct pool_entry *pool;
-	struct spool_entry *spool;
-	int freed_pages;
-	int queue;
-
-	BUG_ON(id >= IWM_MACS_OUT_GROUPS);
-
-	pool = &iwm->tx_credit.pools[id];
-	spool = &iwm->tx_credit.spools[pool->sid];
-
-	freed_pages = total_freed_pages - pool->total_freed_pages;
-	IWM_DBG_TX(iwm, DBG, "Free %d pages for pool[%d]\n", freed_pages, id);
-
-	if (!freed_pages) {
-		IWM_DBG_TX(iwm, DBG, "No pages are freed by UMAC\n");
-		return;
-	} else if (freed_pages < 0)
-		freed_pages += IWM_UMAC_PAGE_ALLOC_WRAP + 1;
-
-	if (pool->alloc_pages > pool->min_pages) {
-		int spool_pages = pool->alloc_pages - pool->min_pages;
-		spool_pages = min(spool_pages, freed_pages);
-		spool->alloc_pages -= spool_pages;
-	}
-
-	pool->alloc_pages -= freed_pages;
-	pool->total_freed_pages = total_freed_pages;
-
-	IWM_DBG_TX(iwm, DBG, "Pool[%d] pages alloc: %d, total_freed: %d, "
-		   "Spool[%d] pages alloc: %d\n", id, pool->alloc_pages,
-		   pool->total_freed_pages, pool->sid, spool->alloc_pages);
-
-	if (test_bit(id, &iwm->tx_credit.full_pools_map) &&
-	    (pool->alloc_pages < pool->max_pages / 2)) {
-		clear_bit(id, &iwm->tx_credit.full_pools_map);
-
-		queue = pool_id_to_queue(id);
-
-		IWM_DBG_TX(iwm, DBG, "LINK: start txq[%d], available "
-			   "credit: %d\n", queue,
-			   iwm_tx_credit_get(&iwm->tx_credit, id));
-		queue_work(iwm->txq[queue].wq, &iwm->txq[queue].worker);
-	}
-}
-
-static void iwm_tx_credit_dec(struct iwm_priv *iwm, int id, int alloc_pages)
-{
-	struct pool_entry *pool;
-	struct spool_entry *spool;
-	int spool_pages;
-
-	IWM_DBG_TX(iwm, DBG, "Allocate %d pages for pool[%d]\n",
-		   alloc_pages, id);
-
-	BUG_ON(id >= IWM_MACS_OUT_GROUPS);
-
-	pool = &iwm->tx_credit.pools[id];
-	spool = &iwm->tx_credit.spools[pool->sid];
-
-	spool_pages = pool->alloc_pages + alloc_pages - pool->min_pages;
-
-	if (pool->alloc_pages >= pool->min_pages)
-		spool->alloc_pages += alloc_pages;
-	else if (spool_pages > 0)
-		spool->alloc_pages += spool_pages;
-
-	pool->alloc_pages += alloc_pages;
-
-	IWM_DBG_TX(iwm, DBG, "Pool[%d] pages alloc: %d, total_freed: %d, "
-		   "Spool[%d] pages alloc: %d\n", id, pool->alloc_pages,
-		   pool->total_freed_pages, pool->sid, spool->alloc_pages);
-}
-
-int iwm_tx_credit_alloc(struct iwm_priv *iwm, int id, int nb)
-{
-	u32 npages = BYTES_TO_PAGES(nb);
-	int ret = 0;
-
-	spin_lock(&iwm->tx_credit.lock);
-
-	if (!iwm_tx_credit_ok(iwm, id, nb)) {
-		IWM_DBG_TX(iwm, DBG, "No credit available for pool[%d]\n", id);
-		ret = -ENOSPC;
-		goto out;
-	}
-
-	iwm_tx_credit_dec(iwm, id, npages);
-
- out:
-	spin_unlock(&iwm->tx_credit.lock);
-	return ret;
-}
-
-/*
- * Since we're on an SDIO or USB bus, we are not sharing memory
- * for storing to be transmitted frames. The host needs to push
- * them upstream. As a consequence there needs to be a way for
- * the target to let us know if it can actually take more TX frames
- * or not. This is what Tx credits are for.
- *
- * For each Tx HW queue, we have a Tx pool, and then we have one
- * unique super pool (spool), which is actually a global pool of
- * all the UMAC pages.
- * For each Tx pool we have a min_pages, a max_pages fields, and a
- * alloc_pages fields. The alloc_pages tracks the number of pages
- * currently allocated from the tx pool.
- * Here are the rules to check if given a tx frame we have enough
- * tx credits for it:
- * 1) We translate the frame length into a number of UMAC pages.
- *    Let's call them n_pages.
- * 2) For the corresponding tx pool, we check if n_pages +
- *    pool->alloc_pages is higher than pool->min_pages. min_pages
- *    represent a set of pre-allocated pages on the tx pool. If
- *    that's the case, then we need to allocate those pages from
- *    the spool. We can do so until we reach spool->max_pages.
- * 3) Each tx pool is not allowed to allocate more than pool->max_pages
- *    from the spool, so once we're over min_pages, we can allocate
- *    pages from the spool, but not more than max_pages.
- *
- * When the tx code path needs to send a tx frame, it checks first
- * if it has enough tx credits, following those rules. [iwm_tx_credit_get]
- * If it does, it then updates the pool and spool counters and
- * then send the frame. [iwm_tx_credit_alloc and iwm_tx_credit_dec]
- * On the other side, when the UMAC is done transmitting frames, it
- * will send a credit update notification to the host. This is when
- * the pool and spool counters gets to be decreased. [iwm_tx_credit_inc,
- * called from rx.c:iwm_ntf_tx_credit_update]
- *
- */
-void iwm_tx_credit_init_pools(struct iwm_priv *iwm,
-			      struct iwm_umac_notif_alive *alive)
-{
-	int i, sid, pool_pages;
-
-	spin_lock(&iwm->tx_credit.lock);
-
-	iwm->tx_credit.pool_nr = le16_to_cpu(alive->page_grp_count);
-	iwm->tx_credit.full_pools_map = 0;
-	memset(&iwm->tx_credit.spools[0], 0, sizeof(struct spool_entry));
-
-	IWM_DBG_TX(iwm, DBG, "Pools number is %d\n", iwm->tx_credit.pool_nr);
-
-	for (i = 0; i < iwm->tx_credit.pool_nr; i++) {
-		__le32 page_grp_state = alive->page_grp_state[i];
-
-		iwm->tx_credit.pools[i].id = GET_VAL32(page_grp_state,
-				UMAC_ALIVE_PAGE_STS_GRP_NUM);
-		iwm->tx_credit.pools[i].sid = GET_VAL32(page_grp_state,
-				UMAC_ALIVE_PAGE_STS_SGRP_NUM);
-		iwm->tx_credit.pools[i].min_pages = GET_VAL32(page_grp_state,
-				UMAC_ALIVE_PAGE_STS_GRP_MIN_SIZE);
-		iwm->tx_credit.pools[i].max_pages = GET_VAL32(page_grp_state,
-				UMAC_ALIVE_PAGE_STS_GRP_MAX_SIZE);
-		iwm->tx_credit.pools[i].alloc_pages = 0;
-		iwm->tx_credit.pools[i].total_freed_pages = 0;
-
-		sid = iwm->tx_credit.pools[i].sid;
-		pool_pages = iwm->tx_credit.pools[i].min_pages;
-
-		if (iwm->tx_credit.spools[sid].max_pages == 0) {
-			iwm->tx_credit.spools[sid].id = sid;
-			iwm->tx_credit.spools[sid].max_pages =
-				GET_VAL32(page_grp_state,
-					  UMAC_ALIVE_PAGE_STS_SGRP_MAX_SIZE);
-			iwm->tx_credit.spools[sid].alloc_pages = 0;
-		}
-
-		iwm->tx_credit.spools[sid].alloc_pages += pool_pages;
-
-		IWM_DBG_TX(iwm, DBG, "Pool idx: %d, id: %d, sid: %d, capacity "
-			   "min: %d, max: %d, pool alloc: %d, total_free: %d, "
-			   "super poll alloc: %d\n",
-			   i, iwm->tx_credit.pools[i].id,
-			   iwm->tx_credit.pools[i].sid,
-			   iwm->tx_credit.pools[i].min_pages,
-			   iwm->tx_credit.pools[i].max_pages,
-			   iwm->tx_credit.pools[i].alloc_pages,
-			   iwm->tx_credit.pools[i].total_freed_pages,
-			   iwm->tx_credit.spools[sid].alloc_pages);
-	}
-
-	spin_unlock(&iwm->tx_credit.lock);
-}
-
-#define IWM_UDMA_HDR_LEN	sizeof(struct iwm_umac_wifi_out_hdr)
-
-static __le16 iwm_tx_build_packet(struct iwm_priv *iwm, struct sk_buff *skb,
-				  int pool_id, u8 *buf)
-{
-	struct iwm_umac_wifi_out_hdr *hdr = (struct iwm_umac_wifi_out_hdr *)buf;
-	struct iwm_udma_wifi_cmd udma_cmd;
-	struct iwm_umac_cmd umac_cmd;
-	struct iwm_tx_info *tx_info = skb_to_tx_info(skb);
-
-	udma_cmd.count = cpu_to_le16(skb->len +
-				     sizeof(struct iwm_umac_fw_cmd_hdr));
-	/* set EOP to 0 here. iwm_udma_wifi_hdr_set_eop() will be
-	 * called later to set EOP for the last packet. */
-	udma_cmd.eop = 0;
-	udma_cmd.credit_group = pool_id;
-	udma_cmd.ra_tid = tx_info->sta << 4 | tx_info->tid;
-	udma_cmd.lmac_offset = 0;
-
-	umac_cmd.id = REPLY_TX;
-	umac_cmd.count = cpu_to_le16(skb->len);
-	umac_cmd.color = tx_info->color;
-	umac_cmd.resp = 0;
-	umac_cmd.seq_num = cpu_to_le16(iwm_alloc_wifi_cmd_seq(iwm));
-
-	iwm_build_udma_wifi_hdr(iwm, &hdr->hw_hdr, &udma_cmd);
-	iwm_build_umac_hdr(iwm, &hdr->sw_hdr, &umac_cmd);
-
-	memcpy(buf + sizeof(*hdr), skb->data, skb->len);
-
-	return umac_cmd.seq_num;
-}
-
-static int iwm_tx_send_concat_packets(struct iwm_priv *iwm,
-				      struct iwm_tx_queue *txq)
-{
-	int ret;
-
-	if (!txq->concat_count)
-		return 0;
-
-	IWM_DBG_TX(iwm, DBG, "Send concatenated Tx: queue %d, %d bytes\n",
-		   txq->id, txq->concat_count);
-
-	/* mark EOP for the last packet */
-	iwm_udma_wifi_hdr_set_eop(iwm, txq->concat_ptr, 1);
-
-	trace_iwm_tx_packets(iwm, txq->concat_buf, txq->concat_count);
-	ret = iwm_bus_send_chunk(iwm, txq->concat_buf, txq->concat_count);
-
-	txq->concat_count = 0;
-	txq->concat_ptr = txq->concat_buf;
-
-	return ret;
-}
-
-void iwm_tx_worker(struct work_struct *work)
-{
-	struct iwm_priv *iwm;
-	struct iwm_tx_info *tx_info = NULL;
-	struct sk_buff *skb;
-	struct iwm_tx_queue *txq;
-	struct iwm_sta_info *sta_info;
-	struct iwm_tid_info *tid_info;
-	int cmdlen, ret, pool_id;
-
-	txq = container_of(work, struct iwm_tx_queue, worker);
-	iwm = container_of(txq, struct iwm_priv, txq[txq->id]);
-
-	pool_id = queue_to_pool_id(txq->id);
-
-	while (!test_bit(pool_id, &iwm->tx_credit.full_pools_map) &&
-	       !skb_queue_empty(&txq->queue)) {
-
-		spin_lock_bh(&txq->lock);
-		skb = skb_dequeue(&txq->queue);
-		spin_unlock_bh(&txq->lock);
-
-		tx_info = skb_to_tx_info(skb);
-		sta_info = &iwm->sta_table[tx_info->sta];
-		if (!sta_info->valid) {
-			IWM_ERR(iwm, "Trying to send a frame to unknown STA\n");
-			kfree_skb(skb);
-			continue;
-		}
-
-		tid_info = &sta_info->tid_info[tx_info->tid];
-
-		mutex_lock(&tid_info->mutex);
-
-		/*
-		 * If the RAxTID is stopped, we queue the skb to the stopped
-		 * queue.
-		 * Whenever we'll get a UMAC notification to resume the tx flow
-		 * for this RAxTID, we'll merge back the stopped queue into the
-		 * regular queue. See iwm_ntf_stop_resume_tx() from rx.c.
-		 */
-		if (tid_info->stopped) {
-			IWM_DBG_TX(iwm, DBG, "%dx%d stopped\n",
-				   tx_info->sta, tx_info->tid);
-			spin_lock_bh(&txq->lock);
-			skb_queue_tail(&txq->stopped_queue, skb);
-			spin_unlock_bh(&txq->lock);
-
-			mutex_unlock(&tid_info->mutex);
-			continue;
-		}
-
-		cmdlen = IWM_UDMA_HDR_LEN + skb->len;
-
-		IWM_DBG_TX(iwm, DBG, "Tx frame on queue %d: skb: 0x%p, sta: "
-			   "%d, color: %d\n", txq->id, skb, tx_info->sta,
-			   tx_info->color);
-
-		if (txq->concat_count + cmdlen > IWM_HAL_CONCATENATE_BUF_SIZE)
-			iwm_tx_send_concat_packets(iwm, txq);
-
-		ret = iwm_tx_credit_alloc(iwm, pool_id, cmdlen);
-		if (ret) {
-			IWM_DBG_TX(iwm, DBG, "not enough tx_credit for queue "
-				   "%d, Tx worker stopped\n", txq->id);
-			spin_lock_bh(&txq->lock);
-			skb_queue_head(&txq->queue, skb);
-			spin_unlock_bh(&txq->lock);
-
-			mutex_unlock(&tid_info->mutex);
-			break;
-		}
-
-		txq->concat_ptr = txq->concat_buf + txq->concat_count;
-		tid_info->last_seq_num =
-			iwm_tx_build_packet(iwm, skb, pool_id, txq->concat_ptr);
-		txq->concat_count += ALIGN(cmdlen, 16);
-
-		mutex_unlock(&tid_info->mutex);
-
-		kfree_skb(skb);
-	}
-
-	iwm_tx_send_concat_packets(iwm, txq);
-
-	if (__netif_subqueue_stopped(iwm_to_ndev(iwm), txq->id) &&
-	    !test_bit(pool_id, &iwm->tx_credit.full_pools_map) &&
-	    (skb_queue_len(&txq->queue) < IWM_TX_LIST_SIZE / 2)) {
-		IWM_DBG_TX(iwm, DBG, "LINK: start netif_subqueue[%d]", txq->id);
-		netif_wake_subqueue(iwm_to_ndev(iwm), txq->id);
-	}
-}
-
-int iwm_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
-{
-	struct iwm_priv *iwm = ndev_to_iwm(netdev);
-	struct wireless_dev *wdev = iwm_to_wdev(iwm);
-	struct iwm_tx_info *tx_info;
-	struct iwm_tx_queue *txq;
-	struct iwm_sta_info *sta_info;
-	u8 *dst_addr, sta_id;
-	u16 queue;
-	int ret;
-
-
-	if (!test_bit(IWM_STATUS_ASSOCIATED, &iwm->status)) {
-		IWM_DBG_TX(iwm, DBG, "LINK: stop netif_all_queues: "
-			   "not associated\n");
-		netif_tx_stop_all_queues(netdev);
-		goto drop;
-	}
-
-	queue = skb_get_queue_mapping(skb);
-	BUG_ON(queue >= IWM_TX_DATA_QUEUES); /* no iPAN yet */
-
-	txq = &iwm->txq[queue];
-
-	/* No free space for Tx, tx_worker is too slow */
-	if ((skb_queue_len(&txq->queue) > IWM_TX_LIST_SIZE) ||
-	    (skb_queue_len(&txq->stopped_queue) > IWM_TX_LIST_SIZE)) {
-		IWM_DBG_TX(iwm, DBG, "LINK: stop netif_subqueue[%d]\n", queue);
-		netif_stop_subqueue(netdev, queue);
-		return NETDEV_TX_BUSY;
-	}
-
-	ret = ieee80211_data_from_8023(skb, netdev->dev_addr, wdev->iftype,
-				       iwm->bssid, 0);
-	if (ret) {
-		IWM_ERR(iwm, "build wifi header failed\n");
-		goto drop;
-	}
-
-	dst_addr = ((struct ieee80211_hdr *)(skb->data))->addr1;
-
-	for (sta_id = 0; sta_id < IWM_STA_TABLE_NUM; sta_id++) {
-		sta_info = &iwm->sta_table[sta_id];
-		if (sta_info->valid &&
-		    !memcmp(dst_addr, sta_info->addr, ETH_ALEN))
-			break;
-	}
-
-	if (sta_id == IWM_STA_TABLE_NUM) {
-		IWM_ERR(iwm, "STA %pM not found in sta_table, Tx ignored\n",
-			dst_addr);
-		goto drop;
-	}
-
-	tx_info = skb_to_tx_info(skb);
-	tx_info->sta = sta_id;
-	tx_info->color = sta_info->color;
-	/* UMAC uses TID 8 (vs. 0) for non QoS packets */
-	if (sta_info->qos)
-		tx_info->tid = skb->priority;
-	else
-		tx_info->tid = IWM_UMAC_MGMT_TID;
-
-	spin_lock_bh(&iwm->txq[queue].lock);
-	skb_queue_tail(&iwm->txq[queue].queue, skb);
-	spin_unlock_bh(&iwm->txq[queue].lock);
-
-	queue_work(iwm->txq[queue].wq, &iwm->txq[queue].worker);
-
-	netdev->stats.tx_packets++;
-	netdev->stats.tx_bytes += skb->len;
-	return NETDEV_TX_OK;
-
- drop:
-	netdev->stats.tx_dropped++;
-	dev_kfree_skb_any(skb);
-	return NETDEV_TX_OK;
-}