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

Pull networking update from David Miller:

 1) Checkpoint/restarted TCP sockets now can properly propagate the TCP
    timestamp offset.  From Andrey Vagin.

 2) VMWARE VM VSOCK layer, from Andy King.

 3) Much improved support for virtual functions and SR-IOV in bnx2x,
    from Ariel ELior.

 4) All protocols on ipv4 and ipv6 are now network namespace aware, and
    all the compatability checks for initial-namespace-only protocols is
    removed.  Thanks to Tom Parkin for helping deal with the last major
    holdout, L2TP.

 5) IPV6 support in netpoll and network namespace support in pktgen,
    from Cong Wang.

 6) Multiple Registration Protocol (MRP) and Multiple VLAN Registration
    Protocol (MVRP) support, from David Ward.

 7) Compute packet lengths more accurately in the packet scheduler, from
    Eric Dumazet.

 8) Use per-task page fragment allocator in skb_append_datato_frags(),
    also from Eric Dumazet.

 9) Add support for connection tracking labels in netfilter, from
    Florian Westphal.

10) Fix default multicast group joining on ipv6, and add anti-spoofing
    checks to 6to4 and 6rd.  From Hannes Frederic Sowa.

11) Make ipv4/ipv6 fragmentation memory limits more reasonable in modern
    times, rearrange inet frag datastructures for better cacheline
    locality, and move more operations outside of locking.  From Jesper
    Dangaard Brouer.

12) Instead of strict master <--> slave relationships, allow arbitrary
    scenerios with "upper device lists".  From Jiri Pirko.

13) Improve rate limiting accuracy in TBF and act_police, also from Jiri
    Pirko.

14) Add a BPF filter netfilter match target, from Willem de Bruijn.

15) Orphan and delete a bunch of pre-historic networking drivers from
    Paul Gortmaker.

16) Add TSO support for GRE tunnels, from Pravin B SHelar.  Although
    this still needs some minor bug fixing before it's %100 correct in
    all cases.

17) Handle unresolved IPSEC states like ARP, with a resolution packet
    queue.  From Steffen Klassert.

18) Remove TCP Appropriate Byte Count support (ABC), from Stephen
    Hemminger.  This was long overdue.

19) Support SO_REUSEPORT, from Tom Herbert.

20) Allow locking a socket BPF filter, so that it cannot change after a
    process drops capabilities.

21) Add VLAN filtering to bridge, from Vlad Yasevich.

22) Bring ipv6 on-par with ipv4 and do not cache neighbour entries in
    the ipv6 routes, from YOSHIFUJI Hideaki.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1538 commits)
  ipv6: fix race condition regarding dst->expires and dst->from.
  net: fix a wrong assignment in skb_split()
  ip_gre: remove an extra dst_release()
  ppp: set qdisc_tx_busylock to avoid LOCKDEP splat
  atl1c: restore buffer state
  net: fix a build failure when !CONFIG_PROC_FS
  net: ipv4: fix waring -Wunused-variable
  net: proc: fix build failed when procfs is not configured
  Revert "xen: netback: remove redundant xenvif_put"
  net: move procfs code to net/core/net-procfs.c
  qmi_wwan, cdc-ether: add ADU960S
  bonding: set sysfs device_type to 'bond'
  bonding: fix bond_release_all inconsistencies
  b44: use netdev_alloc_skb_ip_align()
  xen: netback: remove redundant xenvif_put
  net: fec: Do a sanity check on the gpio number
  ip_gre: propogate target device GSO capability to the tunnel device
  ip_gre: allow CSUM capable devices to handle packets
  bonding: Fix initialize after use for 3ad machine state spinlock
  bonding: Fix race condition between bond_enslave() and bond_3ad_update_lacp_rate()
  ...

1 files changed, 207 insertions, 0 deletions

diff --git a/drivers/net/wireless/iwlwifi/mvm/power.c b/drivers/net/wireless/iwlwifi/mvm/power.c
new file mode 100644
index 000000000000..5a92a4978795
--- /dev/null
+++ b/drivers/net/wireless/iwlwifi/mvm/power.c
@@ -0,0 +1,207 @@
+/******************************************************************************
+ *
+ * This file is provided under a dual BSD/GPLv2 license.  When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
+ * USA
+ *
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * Contact Information:
+ *  Intel Linux Wireless <ilw@linux.intel.com>
+ * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved.
+ * 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 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.
+ *
+ *****************************************************************************/
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+
+#include <net/mac80211.h>
+
+#include "iwl-debug.h"
+#include "mvm.h"
+#include "iwl-modparams.h"
+#include "fw-api-power.h"
+
+#define POWER_KEEP_ALIVE_PERIOD_SEC    25
+
+static void iwl_power_build_cmd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
+				struct iwl_powertable_cmd *cmd)
+{
+	struct ieee80211_hw *hw = mvm->hw;
+	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
+	struct ieee80211_chanctx_conf *chanctx_conf;
+	struct ieee80211_channel *chan;
+	int dtimper, dtimper_msec;
+	int keep_alive;
+	bool radar_detect = false;
+
+	cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
+							    mvmvif->color));
+	cmd->action = cpu_to_le32(FW_CTXT_ACTION_MODIFY);
+
+	if ((!vif->bss_conf.ps) ||
+	    (iwlmvm_mod_params.power_scheme == IWL_POWER_SCHEME_CAM))
+		return;
+
+	cmd->flags |= cpu_to_le16(POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK);
+
+	dtimper = hw->conf.ps_dtim_period ?: 1;
+
+	/* Check if radar detection is required on current channel */
+	rcu_read_lock();
+	chanctx_conf = rcu_dereference(vif->chanctx_conf);
+	WARN_ON(!chanctx_conf);
+	if (chanctx_conf) {
+		chan = chanctx_conf->def.chan;
+		radar_detect = chan->flags & IEEE80211_CHAN_RADAR;
+	}
+	rcu_read_unlock();
+
+	/* Check skip over DTIM conditions */
+	if (!radar_detect && (dtimper <= 10) &&
+	    (iwlmvm_mod_params.power_scheme == IWL_POWER_SCHEME_LP)) {
+		cmd->flags |= cpu_to_le16(POWER_FLAGS_SLEEP_OVER_DTIM_MSK);
+		cmd->num_skip_dtim = 2;
+	}
+
+	/* Check that keep alive period is at least 3 * DTIM */
+	dtimper_msec = dtimper * vif->bss_conf.beacon_int;
+	keep_alive = max_t(int, 3 * dtimper_msec,
+			   MSEC_PER_SEC * POWER_KEEP_ALIVE_PERIOD_SEC);
+	keep_alive = DIV_ROUND_UP(keep_alive, MSEC_PER_SEC);
+
+	cmd->keep_alive_seconds = cpu_to_le16(keep_alive);
+
+	if (iwlmvm_mod_params.power_scheme == IWL_POWER_SCHEME_LP) {
+		/* TODO: Also for D3 (device sleep / WoWLAN) */
+		cmd->rx_data_timeout = cpu_to_le32(10);
+		cmd->tx_data_timeout = cpu_to_le32(10);
+	} else {
+		cmd->rx_data_timeout = cpu_to_le32(50);
+		cmd->tx_data_timeout = cpu_to_le32(50);
+	}
+}
+
+int iwl_mvm_power_update_mode(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
+{
+	struct iwl_powertable_cmd cmd = {};
+
+	if (!iwlwifi_mod_params.power_save) {
+		IWL_DEBUG_POWER(mvm, "Power management is not allowed\n");
+		return 0;
+	}
+
+	if (vif->type != NL80211_IFTYPE_STATION || vif->p2p)
+		return 0;
+
+	iwl_power_build_cmd(mvm, vif, &cmd);
+
+	IWL_DEBUG_POWER(mvm,
+			"Sending power table command on mac id 0x%X for power level %d, flags = 0x%X\n",
+			cmd.id_and_color, iwlmvm_mod_params.power_scheme,
+			le16_to_cpu(cmd.flags));
+
+	if (cmd.flags & cpu_to_le16(POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK)) {
+		IWL_DEBUG_POWER(mvm, "Keep alive = %u sec\n",
+				le16_to_cpu(cmd.keep_alive_seconds));
+		IWL_DEBUG_POWER(mvm, "Rx timeout = %u usec\n",
+				le32_to_cpu(cmd.rx_data_timeout));
+		IWL_DEBUG_POWER(mvm, "Tx timeout = %u usec\n",
+				le32_to_cpu(cmd.tx_data_timeout));
+		IWL_DEBUG_POWER(mvm, "Rx timeout (uAPSD) = %u usec\n",
+				le32_to_cpu(cmd.rx_data_timeout_uapsd));
+		IWL_DEBUG_POWER(mvm, "Tx timeout = %u usec\n",
+				le32_to_cpu(cmd.tx_data_timeout_uapsd));
+		IWL_DEBUG_POWER(mvm, "LP RX RSSI threshold = %u\n",
+				cmd.lprx_rssi_threshold);
+		IWL_DEBUG_POWER(mvm, "DTIMs to skip = %u\n", cmd.num_skip_dtim);
+	}
+
+	return iwl_mvm_send_cmd_pdu(mvm, POWER_TABLE_CMD, CMD_SYNC,
+				    sizeof(cmd), &cmd);
+}
+
+int iwl_mvm_power_disable(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
+{
+	struct iwl_powertable_cmd cmd = {};
+	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
+
+	if (!iwlwifi_mod_params.power_save) {
+		IWL_DEBUG_POWER(mvm, "Power management is not allowed\n");
+		return 0;
+	}
+
+	if (vif->type != NL80211_IFTYPE_STATION || vif->p2p)
+		return 0;
+
+	cmd.id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
+							    mvmvif->color));
+	cmd.action = cpu_to_le32(FW_CTXT_ACTION_MODIFY);
+
+	IWL_DEBUG_POWER(mvm,
+			"Sending power table command on mac id 0x%X for power level %d, flags = 0x%X\n",
+			cmd.id_and_color, iwlmvm_mod_params.power_scheme,
+			le16_to_cpu(cmd.flags));
+
+	return iwl_mvm_send_cmd_pdu(mvm, POWER_TABLE_CMD, CMD_ASYNC,
+				    sizeof(cmd), &cmd);
+}
+
+#ifdef CONFIG_IWLWIFI_DEBUGFS
+void iwl_power_get_params(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
+			  struct iwl_powertable_cmd *cmd)
+{
+	iwl_power_build_cmd(mvm, vif, cmd);
+}
+#endif /* CONFIG_IWLWIFI_DEBUGFS */