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

Pull networking updates from David Miller:

 1) Add TX fast path in mac80211, from Johannes Berg.

 2) Add TSO/GRO support to ibmveth, from Thomas Falcon

 3) Move away from cached routes in ipv6, just like ipv4, from Martin
    KaFai Lau.

 4) Lots of new rhashtable tests, from Thomas Graf.

 5) Run ingress qdisc lockless, from Alexei Starovoitov.

 6) Allow servers to fetch TCP packet headers for SYN packets of new
    connections, for fingerprinting.  From Eric Dumazet.

 7) Add mode parameter to pktgen, for testing receive.  From Alexei
    Starovoitov.

 8) Cache access optimizations via simplifications of build_skb(), from
    Alexander Duyck.

 9) Move page frag allocator under mm/, also from Alexander.

10) Add xmit_more support to hv_netvsc, from KY Srinivasan.

11) Add a counter guard in case we try to perform endless reclassify
    loops in the packet scheduler.

12) Extern flow dissector to be programmable and use it in new "Flower"
    classifier.  From Jiri Pirko.

13) AF_PACKET fanout rollover fixes, performance improvements, and new
    statistics.  From Willem de Bruijn.

14) Add netdev driver for GENEVE tunnels, from John W Linville.

15) Add ingress netfilter hooks and filtering, from Pablo Neira Ayuso.

16) Fix handling of epoll edge triggers in TCP, from Eric Dumazet.

17) Add an ECN retry fallback for the initial TCP handshake, from Daniel
    Borkmann.

18) Add tail call support to BPF, from Alexei Starovoitov.

19) Add several pktgen helper scripts, from Jesper Dangaard Brouer.

20) Add zerocopy support to AF_UNIX, from Hannes Frederic Sowa.

21) Favor even port numbers for allocation to connect() requests, and
    odd port numbers for bind(0), in an effort to help avoid
    ip_local_port_range exhaustion.  From Eric Dumazet.

22) Add Cavium ThunderX driver, from Sunil Goutham.

23) Allow bpf programs to access skb_iif and dev->ifindex SKB metadata,
    from Alexei Starovoitov.

24) Add support for T6 chips in cxgb4vf driver, from Hariprasad Shenai.

25) Double TCP Small Queues default to 256K to accomodate situations
    like the XEN driver and wireless aggregation.  From Wei Liu.

26) Add more entropy inputs to flow dissector, from Tom Herbert.

27) Add CDG congestion control algorithm to TCP, from Kenneth Klette
    Jonassen.

28) Convert ipset over to RCU locking, from Jozsef Kadlecsik.

29) Track and act upon link status of ipv4 route nexthops, from Andy
    Gospodarek.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1670 commits)
  bridge: vlan: flush the dynamically learned entries on port vlan delete
  bridge: multicast: add a comment to br_port_state_selection about blocking state
  net: inet_diag: export IPV6_V6ONLY sockopt
  stmmac: troubleshoot unexpected bits in des0 & des1
  net: ipv4 sysctl option to ignore routes when nexthop link is down
  net: track link-status of ipv4 nexthops
  net: switchdev: ignore unsupported bridge flags
  net: Cavium: Fix MAC address setting in shutdown state
  drivers: net: xgene: fix for ACPI support without ACPI
  ip: report the original address of ICMP messages
  net/mlx5e: Prefetch skb data on RX
  net/mlx5e: Pop cq outside mlx5e_get_cqe
  net/mlx5e: Remove mlx5e_cq.sqrq back-pointer
  net/mlx5e: Remove extra spaces
  net/mlx5e: Avoid TX CQE generation if more xmit packets expected
  net/mlx5e: Avoid redundant dev_kfree_skb() upon NOP completion
  net/mlx5e: Remove re-assignment of wq type in mlx5e_enable_rq()
  net/mlx5e: Use skb_shinfo(skb)->gso_segs rather than counting them
  net/mlx5e: Static mapping of netdev priv resources to/from netdev TX queues
  net/mlx4_en: Use HW counters for rx/tx bytes/packets in PF device
  ...

1 files changed, 321 insertions, 0 deletions

diff --git a/drivers/net/wireless/ath/ath10k/wow.c b/drivers/net/wireless/ath/ath10k/wow.c
new file mode 100644
index 0000000..a68d8fd
--- /dev/null
+++ b/drivers/net/wireless/ath/ath10k/wow.c
@@ -0,0 +1,321 @@
+/*
+ * Copyright (c) 2015 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
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "mac.h"
+
+#include <net/mac80211.h>
+#include "hif.h"
+#include "core.h"
+#include "debug.h"
+#include "wmi.h"
+#include "wmi-ops.h"
+
+static const struct wiphy_wowlan_support ath10k_wowlan_support = {
+	.flags = WIPHY_WOWLAN_DISCONNECT |
+		 WIPHY_WOWLAN_MAGIC_PKT,
+	.pattern_min_len = WOW_MIN_PATTERN_SIZE,
+	.pattern_max_len = WOW_MAX_PATTERN_SIZE,
+	.max_pkt_offset = WOW_MAX_PKT_OFFSET,
+};
+
+static int ath10k_wow_vif_cleanup(struct ath10k_vif *arvif)
+{
+	struct ath10k *ar = arvif->ar;
+	int i, ret;
+
+	for (i = 0; i < WOW_EVENT_MAX; i++) {
+		ret = ath10k_wmi_wow_add_wakeup_event(ar, arvif->vdev_id, i, 0);
+		if (ret) {
+			ath10k_warn(ar, "failed to issue wow wakeup for event %s on vdev %i: %d\n",
+				    wow_wakeup_event(i), arvif->vdev_id, ret);
+			return ret;
+		}
+	}
+
+	for (i = 0; i < ar->wow.max_num_patterns; i++) {
+		ret = ath10k_wmi_wow_del_pattern(ar, arvif->vdev_id, i);
+		if (ret) {
+			ath10k_warn(ar, "failed to delete wow pattern %d for vdev %i: %d\n",
+				    i, arvif->vdev_id, ret);
+			return ret;
+		}
+	}
+
+	return 0;
+}
+
+static int ath10k_wow_cleanup(struct ath10k *ar)
+{
+	struct ath10k_vif *arvif;
+	int ret;
+
+	lockdep_assert_held(&ar->conf_mutex);
+
+	list_for_each_entry(arvif, &ar->arvifs, list) {
+		ret = ath10k_wow_vif_cleanup(arvif);
+		if (ret) {
+			ath10k_warn(ar, "failed to clean wow wakeups on vdev %i: %d\n",
+				    arvif->vdev_id, ret);
+			return ret;
+		}
+	}
+
+	return 0;
+}
+
+static int ath10k_vif_wow_set_wakeups(struct ath10k_vif *arvif,
+				      struct cfg80211_wowlan *wowlan)
+{
+	int ret, i;
+	unsigned long wow_mask = 0;
+	struct ath10k *ar = arvif->ar;
+	const struct cfg80211_pkt_pattern *patterns = wowlan->patterns;
+	int pattern_id = 0;
+
+	/* Setup requested WOW features */
+	switch (arvif->vdev_type) {
+	case WMI_VDEV_TYPE_IBSS:
+		__set_bit(WOW_BEACON_EVENT, &wow_mask);
+		 /* fall through */
+	case WMI_VDEV_TYPE_AP:
+		__set_bit(WOW_DEAUTH_RECVD_EVENT, &wow_mask);
+		__set_bit(WOW_DISASSOC_RECVD_EVENT, &wow_mask);
+		__set_bit(WOW_PROBE_REQ_WPS_IE_EVENT, &wow_mask);
+		__set_bit(WOW_AUTH_REQ_EVENT, &wow_mask);
+		__set_bit(WOW_ASSOC_REQ_EVENT, &wow_mask);
+		__set_bit(WOW_HTT_EVENT, &wow_mask);
+		__set_bit(WOW_RA_MATCH_EVENT, &wow_mask);
+		break;
+	case WMI_VDEV_TYPE_STA:
+		if (wowlan->disconnect) {
+			__set_bit(WOW_DEAUTH_RECVD_EVENT, &wow_mask);
+			__set_bit(WOW_DISASSOC_RECVD_EVENT, &wow_mask);
+			__set_bit(WOW_BMISS_EVENT, &wow_mask);
+			__set_bit(WOW_CSA_IE_EVENT, &wow_mask);
+		}
+
+		if (wowlan->magic_pkt)
+			__set_bit(WOW_MAGIC_PKT_RECVD_EVENT, &wow_mask);
+		break;
+	default:
+		break;
+	}
+
+	for (i = 0; i < wowlan->n_patterns; i++) {
+		u8 bitmask[WOW_MAX_PATTERN_SIZE] = {};
+		int j;
+
+		if (patterns[i].pattern_len > WOW_MAX_PATTERN_SIZE)
+			continue;
+
+		/* convert bytemask to bitmask */
+		for (j = 0; j < patterns[i].pattern_len; j++)
+			if (patterns[i].mask[j / 8] & BIT(j % 8))
+				bitmask[j] = 0xff;
+
+		ret = ath10k_wmi_wow_add_pattern(ar, arvif->vdev_id,
+						 pattern_id,
+						 patterns[i].pattern,
+						 bitmask,
+						 patterns[i].pattern_len,
+						 patterns[i].pkt_offset);
+		if (ret) {
+			ath10k_warn(ar, "failed to add pattern %i to vdev %i: %d\n",
+				    pattern_id,
+				    arvif->vdev_id, ret);
+			return ret;
+		}
+
+		pattern_id++;
+		__set_bit(WOW_PATTERN_MATCH_EVENT, &wow_mask);
+	}
+
+	for (i = 0; i < WOW_EVENT_MAX; i++) {
+		if (!test_bit(i, &wow_mask))
+			continue;
+		ret = ath10k_wmi_wow_add_wakeup_event(ar, arvif->vdev_id, i, 1);
+		if (ret) {
+			ath10k_warn(ar, "failed to enable wakeup event %s on vdev %i: %d\n",
+				    wow_wakeup_event(i), arvif->vdev_id, ret);
+			return ret;
+		}
+	}
+
+	return 0;
+}
+
+static int ath10k_wow_set_wakeups(struct ath10k *ar,
+				  struct cfg80211_wowlan *wowlan)
+{
+	struct ath10k_vif *arvif;
+	int ret;
+
+	lockdep_assert_held(&ar->conf_mutex);
+
+	list_for_each_entry(arvif, &ar->arvifs, list) {
+		ret = ath10k_vif_wow_set_wakeups(arvif, wowlan);
+		if (ret) {
+			ath10k_warn(ar, "failed to set wow wakeups on vdev %i: %d\n",
+				    arvif->vdev_id, ret);
+			return ret;
+		}
+	}
+
+	return 0;
+}
+
+static int ath10k_wow_enable(struct ath10k *ar)
+{
+	int ret;
+
+	lockdep_assert_held(&ar->conf_mutex);
+
+	reinit_completion(&ar->target_suspend);
+
+	ret = ath10k_wmi_wow_enable(ar);
+	if (ret) {
+		ath10k_warn(ar, "failed to issue wow enable: %d\n", ret);
+		return ret;
+	}
+
+	ret = wait_for_completion_timeout(&ar->target_suspend, 3 * HZ);
+	if (ret == 0) {
+		ath10k_warn(ar, "timed out while waiting for suspend completion\n");
+		return -ETIMEDOUT;
+	}
+
+	return 0;
+}
+
+static int ath10k_wow_wakeup(struct ath10k *ar)
+{
+	int ret;
+
+	lockdep_assert_held(&ar->conf_mutex);
+
+	reinit_completion(&ar->wow.wakeup_completed);
+
+	ret = ath10k_wmi_wow_host_wakeup_ind(ar);
+	if (ret) {
+		ath10k_warn(ar, "failed to send wow wakeup indication: %d\n",
+			    ret);
+		return ret;
+	}
+
+	ret = wait_for_completion_timeout(&ar->wow.wakeup_completed, 3 * HZ);
+	if (ret == 0) {
+		ath10k_warn(ar, "timed out while waiting for wow wakeup completion\n");
+		return -ETIMEDOUT;
+	}
+
+	return 0;
+}
+
+int ath10k_wow_op_suspend(struct ieee80211_hw *hw,
+			  struct cfg80211_wowlan *wowlan)
+{
+	struct ath10k *ar = hw->priv;
+	int ret;
+
+	mutex_lock(&ar->conf_mutex);
+
+	if (WARN_ON(!test_bit(ATH10K_FW_FEATURE_WOWLAN_SUPPORT,
+			      ar->fw_features))) {
+		ret = 1;
+		goto exit;
+	}
+
+	ret =  ath10k_wow_cleanup(ar);
+	if (ret) {
+		ath10k_warn(ar, "failed to clear wow wakeup events: %d\n",
+			    ret);
+		goto exit;
+	}
+
+	ret = ath10k_wow_set_wakeups(ar, wowlan);
+	if (ret) {
+		ath10k_warn(ar, "failed to set wow wakeup events: %d\n",
+			    ret);
+		goto cleanup;
+	}
+
+	ret = ath10k_wow_enable(ar);
+	if (ret) {
+		ath10k_warn(ar, "failed to start wow: %d\n", ret);
+		goto cleanup;
+	}
+
+	ret = ath10k_hif_suspend(ar);
+	if (ret) {
+		ath10k_warn(ar, "failed to suspend hif: %d\n", ret);
+		goto wakeup;
+	}
+
+	goto exit;
+
+wakeup:
+	ath10k_wow_wakeup(ar);
+
+cleanup:
+	ath10k_wow_cleanup(ar);
+
+exit:
+	mutex_unlock(&ar->conf_mutex);
+	return ret ? 1 : 0;
+}
+
+int ath10k_wow_op_resume(struct ieee80211_hw *hw)
+{
+	struct ath10k *ar = hw->priv;
+	int ret;
+
+	mutex_lock(&ar->conf_mutex);
+
+	if (WARN_ON(!test_bit(ATH10K_FW_FEATURE_WOWLAN_SUPPORT,
+			      ar->fw_features))) {
+		ret = 1;
+		goto exit;
+	}
+
+	ret = ath10k_hif_resume(ar);
+	if (ret) {
+		ath10k_warn(ar, "failed to resume hif: %d\n", ret);
+		goto exit;
+	}
+
+	ret = ath10k_wow_wakeup(ar);
+	if (ret)
+		ath10k_warn(ar, "failed to wakeup from wow: %d\n", ret);
+
+exit:
+	mutex_unlock(&ar->conf_mutex);
+	return ret ? 1 : 0;
+}
+
+int ath10k_wow_init(struct ath10k *ar)
+{
+	if (!test_bit(ATH10K_FW_FEATURE_WOWLAN_SUPPORT, ar->fw_features))
+		return 0;
+
+	if (WARN_ON(!test_bit(WMI_SERVICE_WOW, ar->wmi.svc_map)))
+		return -EINVAL;
+
+	ar->wow.wowlan_support = ath10k_wowlan_support;
+	ar->wow.wowlan_support.n_patterns = ar->wow.max_num_patterns;
+	ar->hw->wiphy->wowlan = &ar->wow.wowlan_support;
+
+	return 0;
+}