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

Pull networking updates from David Miller:
 "Most notable changes in here:

   1) By far the biggest accomplishment, thanks to a large range of
      contributors, is the addition of multi-send for transmit.  This is
      the result of discussions back in Chicago, and the hard work of
      several individuals.

      Now, when the ->ndo_start_xmit() method of a driver sees
      skb->xmit_more as true, it can choose to defer the doorbell
      telling the driver to start processing the new TX queue entires.

      skb->xmit_more means that the generic networking is guaranteed to
      call the driver immediately with another SKB to send.

      There is logic added to the qdisc layer to dequeue multiple
      packets at a time, and the handling mis-predicted offloads in
      software is now done with no locks held.

      Finally, pktgen is extended to have a "burst" parameter that can
      be used to test a multi-send implementation.

      Several drivers have xmit_more support: i40e, igb, ixgbe, mlx4,
      virtio_net

      Adding support is almost trivial, so export more drivers to
      support this optimization soon.

      I want to thank, in no particular or implied order, Jesper
      Dangaard Brouer, Eric Dumazet, Alexander Duyck, Tom Herbert, Jamal
      Hadi Salim, John Fastabend, Florian Westphal, Daniel Borkmann,
      David Tat, Hannes Frederic Sowa, and Rusty Russell.

   2) PTP and timestamping support in bnx2x, from Michal Kalderon.

   3) Allow adjusting the rx_copybreak threshold for a driver via
      ethtool, and add rx_copybreak support to enic driver.  From
      Govindarajulu Varadarajan.

   4) Significant enhancements to the generic PHY layer and the bcm7xxx
      driver in particular (EEE support, auto power down, etc.) from
      Florian Fainelli.

   5) Allow raw buffers to be used for flow dissection, allowing drivers
      to determine the optimal "linear pull" size for devices that DMA
      into pools of pages.  The objective is to get exactly the
      necessary amount of headers into the linear SKB area pre-pulled,
      but no more.  The new interface drivers use is eth_get_headlen().
      From WANG Cong, with driver conversions (several had their own
      by-hand duplicated implementations) by Alexander Duyck and Eric
      Dumazet.

   6) Support checksumming more smoothly and efficiently for
      encapsulations, and add "foo over UDP" facility.  From Tom
      Herbert.

   7) Add Broadcom SF2 switch driver to DSA layer, from Florian
      Fainelli.

   8) eBPF now can load programs via a system call and has an extensive
      testsuite.  Alexei Starovoitov and Daniel Borkmann.

   9) Major overhaul of the packet scheduler to use RCU in several major
      areas such as the classifiers and rate estimators.  From John
      Fastabend.

  10) Add driver for Intel FM10000 Ethernet Switch, from Alexander
      Duyck.

  11) Rearrange TCP_SKB_CB() to reduce cache line misses, from Eric
      Dumazet.

  12) Add Datacenter TCP congestion control algorithm support, From
      Florian Westphal.

  13) Reorganize sk_buff so that __copy_skb_header() is significantly
      faster.  From Eric Dumazet"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1558 commits)
  netlabel: directly return netlbl_unlabel_genl_init()
  net: add netdev_txq_bql_{enqueue, complete}_prefetchw() helpers
  net: description of dma_cookie cause make xmldocs warning
  cxgb4: clean up a type issue
  cxgb4: potential shift wrapping bug
  i40e: skb->xmit_more support
  net: fs_enet: Add NAPI TX
  net: fs_enet: Remove non NAPI RX
  r8169:add support for RTL8168EP
  net_sched: copy exts->type in tcf_exts_change()
  wimax: convert printk to pr_foo()
  af_unix: remove 0 assignment on static
  ipv6: Do not warn for informational ICMP messages, regardless of type.
  Update Intel Ethernet Driver maintainers list
  bridge: Save frag_max_size between PRE_ROUTING and POST_ROUTING
  tipc: fix bug in multicast congestion handling
  net: better IFF_XMIT_DST_RELEASE support
  net/mlx4_en: remove NETDEV_TX_BUSY
  3c59x: fix bad split of cpu_to_le32(pci_map_single())
  net: bcmgenet: fix Tx ring priority programming
  ...

1 files changed, 50 insertions, 40 deletions

diff --git a/drivers/net/wireless/ath/wil6210/wmi.c b/drivers/net/wireless/ath/wil6210/wmi.c
index 1d1d0afdd2e1..4311df982c60 100644
--- a/drivers/net/wireless/ath/wil6210/wmi.c
+++ b/drivers/net/wireless/ath/wil6210/wmi.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2012 Qualcomm Atheros, Inc.
+ * Copyright (c) 2012-2014 Qualcomm Atheros, Inc.
  *
  * Permission to use, copy, modify, and/or distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -14,6 +14,7 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
+#include <linux/moduleparam.h>
 #include <linux/etherdevice.h>
 #include <linux/if_arp.h>
 
@@ -22,6 +23,10 @@
 #include "wmi.h"
 #include "trace.h"
 
+static uint max_assoc_sta = 1;
+module_param(max_assoc_sta, uint, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(max_assoc_sta, " Max number of stations associated to the AP");
+
 /**
  * WMI event receiving - theory of operations
  *
@@ -152,6 +157,7 @@ int wmi_read_hdr(struct wil6210_priv *wil, __le32 ptr,
 		 struct wil6210_mbox_hdr *hdr)
 {
 	void __iomem *src = wmi_buffer(wil, ptr);
+
 	if (!src)
 		return -EINVAL;
 
@@ -273,6 +279,7 @@ static void wmi_evt_ready(struct wil6210_priv *wil, int id, void *d, int len)
 	struct net_device *ndev = wil_to_ndev(wil);
 	struct wireless_dev *wdev = wil->wdev;
 	struct wmi_ready_event *evt = d;
+
 	wil->fw_version = le32_to_cpu(evt->sw_version);
 	wil->n_mids = evt->numof_additional_mids;
 
@@ -292,8 +299,9 @@ static void wmi_evt_fw_ready(struct wil6210_priv *wil, int id, void *d,
 {
 	wil_dbg_wmi(wil, "WMI: got FW ready event\n");
 
+	wil_set_recovery_state(wil, fw_recovery_idle);
 	set_bit(wil_status_fwready, &wil->status);
-	/* reuse wmi_ready for the firmware ready indication */
+	/* let the reset sequence continue */
 	complete(&wil->wmi_ready);
 }
 
@@ -346,11 +354,11 @@ static void wmi_evt_rx_mgmt(struct wil6210_priv *wil, int id, void *d, int len)
 				    rx_mgmt_frame->bssid);
 			cfg80211_put_bss(wiphy, bss);
 		} else {
-			wil_err(wil, "cfg80211_inform_bss() failed\n");
+			wil_err(wil, "cfg80211_inform_bss_frame() failed\n");
 		}
 	} else {
 		cfg80211_rx_mgmt(wil->wdev, freq, signal,
-				 (void *)rx_mgmt_frame, d_len, 0, GFP_KERNEL);
+				 (void *)rx_mgmt_frame, d_len, 0);
 	}
 }
 
@@ -482,33 +490,6 @@ static void wmi_evt_disconnect(struct wil6210_priv *wil, int id,
 	mutex_unlock(&wil->mutex);
 }
 
-static void wmi_evt_notify(struct wil6210_priv *wil, int id, void *d, int len)
-{
-	struct wmi_notify_req_done_event *evt = d;
-
-	if (len < sizeof(*evt)) {
-		wil_err(wil, "Short NOTIFY event\n");
-		return;
-	}
-
-	wil->stats.tsf = le64_to_cpu(evt->tsf);
-	wil->stats.snr = le32_to_cpu(evt->snr_val);
-	wil->stats.bf_mcs = le16_to_cpu(evt->bf_mcs);
-	wil->stats.my_rx_sector = le16_to_cpu(evt->my_rx_sector);
-	wil->stats.my_tx_sector = le16_to_cpu(evt->my_tx_sector);
-	wil->stats.peer_rx_sector = le16_to_cpu(evt->other_rx_sector);
-	wil->stats.peer_tx_sector = le16_to_cpu(evt->other_tx_sector);
-	wil_dbg_wmi(wil, "Link status, MCS %d TSF 0x%016llx\n"
-		    "BF status 0x%08x SNR 0x%08x SQI %d%%\n"
-		    "Tx Tpt %d goodput %d Rx goodput %d\n"
-		    "Sectors(rx:tx) my %d:%d peer %d:%d\n",
-		    wil->stats.bf_mcs, wil->stats.tsf, evt->status,
-		    wil->stats.snr, evt->sqi, le32_to_cpu(evt->tx_tpt),
-		    le32_to_cpu(evt->tx_goodput), le32_to_cpu(evt->rx_goodput),
-		    wil->stats.my_rx_sector, wil->stats.my_tx_sector,
-		    wil->stats.peer_rx_sector, wil->stats.peer_tx_sector);
-}
-
 /*
  * Firmware reports EAPOL frame using WME event.
  * Reconstruct Ethernet frame and deliver it via normal Rx
@@ -617,27 +598,40 @@ static void wmi_evt_ba_status(struct wil6210_priv *wil, int id, void *d,
 		return;
 	}
 
+	mutex_lock(&wil->mutex);
+
 	cid = wil->vring2cid_tid[evt->ringid][0];
 	if (cid >= WIL6210_MAX_CID) {
 		wil_err(wil, "invalid CID %d for vring %d\n", cid, evt->ringid);
-		return;
+		goto out;
 	}
 
 	sta = &wil->sta[cid];
 	if (sta->status == wil_sta_unused) {
 		wil_err(wil, "CID %d unused\n", cid);
-		return;
+		goto out;
 	}
 
 	wil_dbg_wmi(wil, "BACK for CID %d %pM\n", cid, sta->addr);
 	for (i = 0; i < WIL_STA_TID_NUM; i++) {
-		struct wil_tid_ampdu_rx *r = sta->tid_rx[i];
+		struct wil_tid_ampdu_rx *r;
+		unsigned long flags;
+
+		spin_lock_irqsave(&sta->tid_rx_lock, flags);
+
+		r = sta->tid_rx[i];
 		sta->tid_rx[i] = NULL;
 		wil_tid_ampdu_rx_free(wil, r);
+
+		spin_unlock_irqrestore(&sta->tid_rx_lock, flags);
+
 		if ((evt->status == WMI_BA_AGREED) && evt->agg_wsize)
 			sta->tid_rx[i] = wil_tid_ampdu_rx_alloc(wil,
 						evt->agg_wsize, 0);
 	}
+
+out:
+	mutex_unlock(&wil->mutex);
 }
 
 static const struct {
@@ -651,7 +645,6 @@ static const struct {
 	{WMI_SCAN_COMPLETE_EVENTID,	wmi_evt_scan_complete},
 	{WMI_CONNECT_EVENTID,		wmi_evt_connect},
 	{WMI_DISCONNECT_EVENTID,	wmi_evt_disconnect},
-	{WMI_NOTIFY_REQ_DONE_EVENTID,	wmi_evt_notify},
 	{WMI_EAPOL_RX_EVENTID,		wmi_evt_eapol_rx},
 	{WMI_DATA_PORT_OPEN_EVENTID,	wmi_evt_linkup},
 	{WMI_WBE_LINKDOWN_EVENTID,	wmi_evt_linkdown},
@@ -676,7 +669,7 @@ void wmi_recv_cmd(struct wil6210_priv *wil)
 	unsigned n;
 
 	if (!test_bit(wil_status_reset_done, &wil->status)) {
-		wil_err(wil, "Reset not completed\n");
+		wil_err(wil, "Reset in progress. Cannot handle WMI event\n");
 		return;
 	}
 
@@ -731,6 +724,7 @@ void wmi_recv_cmd(struct wil6210_priv *wil)
 			struct wil6210_mbox_hdr_wmi *wmi = &evt->event.wmi;
 			u16 id = le16_to_cpu(wmi->id);
 			u32 tstamp = le32_to_cpu(wmi->timestamp);
+
 			wil_dbg_wmi(wil, "WMI event 0x%04x MID %d @%d msec\n",
 				    id, wmi->mid, tstamp);
 			trace_wil6210_wmi_event(wmi, &wmi[1],
@@ -771,8 +765,8 @@ int wmi_call(struct wil6210_priv *wil, u16 cmdid, void *buf, u16 len,
 	wil->reply_id = reply_id;
 	wil->reply_buf = reply;
 	wil->reply_size = reply_size;
-	remain = wait_for_completion_timeout(&wil->wmi_ready,
-			msecs_to_jiffies(to_msec));
+	remain = wait_for_completion_timeout(&wil->wmi_call,
+					     msecs_to_jiffies(to_msec));
 	if (0 == remain) {
 		wil_err(wil, "wmi_call(0x%04x->0x%04x) timeout %d msec\n",
 			cmdid, reply_id, to_msec);
@@ -822,7 +816,7 @@ int wmi_pcp_start(struct wil6210_priv *wil, int bi, u8 wmi_nettype, u8 chan)
 		.network_type = wmi_nettype,
 		.disable_sec_offload = 1,
 		.channel = chan - 1,
-		.pcp_max_assoc_sta = WIL6210_MAX_CID,
+		.pcp_max_assoc_sta = max_assoc_sta,
 	};
 	struct {
 		struct wil6210_mbox_hdr_wmi wmi;
@@ -832,6 +826,14 @@ int wmi_pcp_start(struct wil6210_priv *wil, int bi, u8 wmi_nettype, u8 chan)
 	if (!wil->secure_pcp)
 		cmd.disable_sec = 1;
 
+	if ((cmd.pcp_max_assoc_sta > WIL6210_MAX_CID) ||
+	    (cmd.pcp_max_assoc_sta <= 0)) {
+		wil_info(wil,
+			 "Requested connection limit %u, valid values are 1 - %d. Setting to %d\n",
+			 max_assoc_sta, WIL6210_MAX_CID, WIL6210_MAX_CID);
+		cmd.pcp_max_assoc_sta = WIL6210_MAX_CID;
+	}
+
 	/*
 	 * Processing time may be huge, in case of secure AP it takes about
 	 * 3500ms for FW to start AP
@@ -968,8 +970,11 @@ int wmi_set_ie(struct wil6210_priv *wil, u8 type, u16 ie_len, const void *ie)
 	int rc;
 	u16 len = sizeof(struct wmi_set_appie_cmd) + ie_len;
 	struct wmi_set_appie_cmd *cmd = kzalloc(len, GFP_KERNEL);
+
 	if (!cmd)
 		return -ENOMEM;
+	if (!ie)
+		ie_len = 0;
 
 	cmd->mgmt_frm_type = type;
 	/* BUG: FW API define ieLen as u8. Will fix FW */
@@ -1143,6 +1148,9 @@ static void wmi_event_handle(struct wil6210_priv *wil,
 		struct wil6210_mbox_hdr_wmi *wmi = (void *)(&hdr[1]);
 		void *evt_data = (void *)(&wmi[1]);
 		u16 id = le16_to_cpu(wmi->id);
+
+		wil_dbg_wmi(wil, "Handle WMI 0x%04x (reply_id 0x%04x)\n",
+			    id, wil->reply_id);
 		/* check if someone waits for this event */
 		if (wil->reply_id && wil->reply_id == id) {
 			if (wil->reply_buf) {
@@ -1153,7 +1161,7 @@ static void wmi_event_handle(struct wil6210_priv *wil,
 						     len - sizeof(*wmi));
 			}
 			wil_dbg_wmi(wil, "Complete WMI 0x%04x\n", id);
-			complete(&wil->wmi_ready);
+			complete(&wil->wmi_call);
 			return;
 		}
 		/* unsolicited event */
@@ -1199,9 +1207,11 @@ void wmi_event_worker(struct work_struct *work)
 	struct pending_wmi_event *evt;
 	struct list_head *lh;
 
+	wil_dbg_wmi(wil, "Start %s\n", __func__);
 	while ((lh = next_wmi_ev(wil)) != NULL) {
 		evt = list_entry(lh, struct pending_wmi_event, list);
 		wmi_event_handle(wil, &evt->event.hdr);
 		kfree(evt);
 	}
+	wil_dbg_wmi(wil, "Finished %s\n", __func__);
 }