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, 144 insertions, 20 deletions

diff --git a/drivers/net/ethernet/intel/e1000e/mac.c b/drivers/net/ethernet/intel/e1000e/mac.c
index 54d9dafaf126..b78e02174601 100644
--- a/drivers/net/ethernet/intel/e1000e/mac.c
+++ b/drivers/net/ethernet/intel/e1000e/mac.c
@@ -1,7 +1,7 @@
 /*******************************************************************************
 
   Intel PRO/1000 Linux driver
-  Copyright(c) 1999 - 2012 Intel Corporation.
+  Copyright(c) 1999 - 2013 Intel Corporation.
 
   This program is free software; you can redistribute it and/or modify it
   under the terms and conditions of the GNU General Public License,
@@ -165,7 +165,7 @@ void e1000e_init_rx_addrs(struct e1000_hw *hw, u16 rar_count)
 s32 e1000_check_alt_mac_addr_generic(struct e1000_hw *hw)
 {
 	u32 i;
-	s32 ret_val = 0;
+	s32 ret_val;
 	u16 offset, nvm_alt_mac_addr_offset, nvm_data;
 	u8 alt_mac_addr[ETH_ALEN];
 
@@ -1021,6 +1021,7 @@ s32 e1000e_config_fc_after_link_up(struct e1000_hw *hw)
 {
 	struct e1000_mac_info *mac = &hw->mac;
 	s32 ret_val = 0;
+	u32 pcs_status_reg, pcs_adv_reg, pcs_lp_ability_reg, pcs_ctrl_reg;
 	u16 mii_status_reg, mii_nway_adv_reg, mii_nway_lp_ability_reg;
 	u16 speed, duplex;
 
@@ -1052,14 +1053,14 @@ s32 e1000e_config_fc_after_link_up(struct e1000_hw *hw)
 		 * has completed.  We read this twice because this reg has
 		 * some "sticky" (latched) bits.
 		 */
-		ret_val = e1e_rphy(hw, PHY_STATUS, &mii_status_reg);
+		ret_val = e1e_rphy(hw, MII_BMSR, &mii_status_reg);
 		if (ret_val)
 			return ret_val;
-		ret_val = e1e_rphy(hw, PHY_STATUS, &mii_status_reg);
+		ret_val = e1e_rphy(hw, MII_BMSR, &mii_status_reg);
 		if (ret_val)
 			return ret_val;
 
-		if (!(mii_status_reg & MII_SR_AUTONEG_COMPLETE)) {
+		if (!(mii_status_reg & BMSR_ANEGCOMPLETE)) {
 			e_dbg("Copper PHY and Auto Neg has not completed.\n");
 			return ret_val;
 		}
@@ -1070,11 +1071,10 @@ s32 e1000e_config_fc_after_link_up(struct e1000_hw *hw)
 		 * Page Ability Register (Address 5) to determine how
 		 * flow control was negotiated.
 		 */
-		ret_val = e1e_rphy(hw, PHY_AUTONEG_ADV, &mii_nway_adv_reg);
+		ret_val = e1e_rphy(hw, MII_ADVERTISE, &mii_nway_adv_reg);
 		if (ret_val)
 			return ret_val;
-		ret_val =
-		    e1e_rphy(hw, PHY_LP_ABILITY, &mii_nway_lp_ability_reg);
+		ret_val = e1e_rphy(hw, MII_LPA, &mii_nway_lp_ability_reg);
 		if (ret_val)
 			return ret_val;
 
@@ -1111,8 +1111,8 @@ s32 e1000e_config_fc_after_link_up(struct e1000_hw *hw)
 		 *   1   |   DC    |   1   |   DC    | E1000_fc_full
 		 *
 		 */
-		if ((mii_nway_adv_reg & NWAY_AR_PAUSE) &&
-		    (mii_nway_lp_ability_reg & NWAY_LPAR_PAUSE)) {
+		if ((mii_nway_adv_reg & ADVERTISE_PAUSE_CAP) &&
+		    (mii_nway_lp_ability_reg & LPA_PAUSE_CAP)) {
 			/* Now we need to check if the user selected Rx ONLY
 			 * of pause frames.  In this case, we had to advertise
 			 * FULL flow control because we could not advertise Rx
@@ -1134,10 +1134,10 @@ s32 e1000e_config_fc_after_link_up(struct e1000_hw *hw)
 		 *-------|---------|-------|---------|--------------------
 		 *   0   |    1    |   1   |    1    | e1000_fc_tx_pause
 		 */
-		else if (!(mii_nway_adv_reg & NWAY_AR_PAUSE) &&
-			 (mii_nway_adv_reg & NWAY_AR_ASM_DIR) &&
-			 (mii_nway_lp_ability_reg & NWAY_LPAR_PAUSE) &&
-			 (mii_nway_lp_ability_reg & NWAY_LPAR_ASM_DIR)) {
+		else if (!(mii_nway_adv_reg & ADVERTISE_PAUSE_CAP) &&
+			 (mii_nway_adv_reg & ADVERTISE_PAUSE_ASYM) &&
+			 (mii_nway_lp_ability_reg & LPA_PAUSE_CAP) &&
+			 (mii_nway_lp_ability_reg & LPA_PAUSE_ASYM)) {
 			hw->fc.current_mode = e1000_fc_tx_pause;
 			e_dbg("Flow Control = Tx PAUSE frames only.\n");
 		}
@@ -1148,10 +1148,10 @@ s32 e1000e_config_fc_after_link_up(struct e1000_hw *hw)
 		 *-------|---------|-------|---------|--------------------
 		 *   1   |    1    |   0   |    1    | e1000_fc_rx_pause
 		 */
-		else if ((mii_nway_adv_reg & NWAY_AR_PAUSE) &&
-			 (mii_nway_adv_reg & NWAY_AR_ASM_DIR) &&
-			 !(mii_nway_lp_ability_reg & NWAY_LPAR_PAUSE) &&
-			 (mii_nway_lp_ability_reg & NWAY_LPAR_ASM_DIR)) {
+		else if ((mii_nway_adv_reg & ADVERTISE_PAUSE_CAP) &&
+			 (mii_nway_adv_reg & ADVERTISE_PAUSE_ASYM) &&
+			 !(mii_nway_lp_ability_reg & LPA_PAUSE_CAP) &&
+			 (mii_nway_lp_ability_reg & LPA_PAUSE_ASYM)) {
 			hw->fc.current_mode = e1000_fc_rx_pause;
 			e_dbg("Flow Control = Rx PAUSE frames only.\n");
 		} else {
@@ -1185,6 +1185,130 @@ s32 e1000e_config_fc_after_link_up(struct e1000_hw *hw)
 		}
 	}
 
+	/* Check for the case where we have SerDes media and auto-neg is
+	 * enabled.  In this case, we need to check and see if Auto-Neg
+	 * has completed, and if so, how the PHY and link partner has
+	 * flow control configured.
+	 */
+	if ((hw->phy.media_type == e1000_media_type_internal_serdes) &&
+	    mac->autoneg) {
+		/* Read the PCS_LSTS and check to see if AutoNeg
+		 * has completed.
+		 */
+		pcs_status_reg = er32(PCS_LSTAT);
+
+		if (!(pcs_status_reg & E1000_PCS_LSTS_AN_COMPLETE)) {
+			e_dbg("PCS Auto Neg has not completed.\n");
+			return ret_val;
+		}
+
+		/* The AutoNeg process has completed, so we now need to
+		 * read both the Auto Negotiation Advertisement
+		 * Register (PCS_ANADV) and the Auto_Negotiation Base
+		 * Page Ability Register (PCS_LPAB) to determine how
+		 * flow control was negotiated.
+		 */
+		pcs_adv_reg = er32(PCS_ANADV);
+		pcs_lp_ability_reg = er32(PCS_LPAB);
+
+		/* Two bits in the Auto Negotiation Advertisement Register
+		 * (PCS_ANADV) and two bits in the Auto Negotiation Base
+		 * Page Ability Register (PCS_LPAB) determine flow control
+		 * for both the PHY and the link partner.  The following
+		 * table, taken out of the IEEE 802.3ab/D6.0 dated March 25,
+		 * 1999, describes these PAUSE resolution bits and how flow
+		 * control is determined based upon these settings.
+		 * NOTE:  DC = Don't Care
+		 *
+		 *   LOCAL DEVICE  |   LINK PARTNER
+		 * PAUSE | ASM_DIR | PAUSE | ASM_DIR | NIC Resolution
+		 *-------|---------|-------|---------|--------------------
+		 *   0   |    0    |  DC   |   DC    | e1000_fc_none
+		 *   0   |    1    |   0   |   DC    | e1000_fc_none
+		 *   0   |    1    |   1   |    0    | e1000_fc_none
+		 *   0   |    1    |   1   |    1    | e1000_fc_tx_pause
+		 *   1   |    0    |   0   |   DC    | e1000_fc_none
+		 *   1   |   DC    |   1   |   DC    | e1000_fc_full
+		 *   1   |    1    |   0   |    0    | e1000_fc_none
+		 *   1   |    1    |   0   |    1    | e1000_fc_rx_pause
+		 *
+		 * Are both PAUSE bits set to 1?  If so, this implies
+		 * Symmetric Flow Control is enabled at both ends.  The
+		 * ASM_DIR bits are irrelevant per the spec.
+		 *
+		 * For Symmetric Flow Control:
+		 *
+		 *   LOCAL DEVICE  |   LINK PARTNER
+		 * PAUSE | ASM_DIR | PAUSE | ASM_DIR | Result
+		 *-------|---------|-------|---------|--------------------
+		 *   1   |   DC    |   1   |   DC    | e1000_fc_full
+		 *
+		 */
+		if ((pcs_adv_reg & E1000_TXCW_PAUSE) &&
+		    (pcs_lp_ability_reg & E1000_TXCW_PAUSE)) {
+			/* Now we need to check if the user selected Rx ONLY
+			 * of pause frames.  In this case, we had to advertise
+			 * FULL flow control because we could not advertise Rx
+			 * ONLY. Hence, we must now check to see if we need to
+			 * turn OFF the TRANSMISSION of PAUSE frames.
+			 */
+			if (hw->fc.requested_mode == e1000_fc_full) {
+				hw->fc.current_mode = e1000_fc_full;
+				e_dbg("Flow Control = FULL.\n");
+			} else {
+				hw->fc.current_mode = e1000_fc_rx_pause;
+				e_dbg("Flow Control = Rx PAUSE frames only.\n");
+			}
+		}
+		/* For receiving PAUSE frames ONLY.
+		 *
+		 *   LOCAL DEVICE  |   LINK PARTNER
+		 * PAUSE | ASM_DIR | PAUSE | ASM_DIR | Result
+		 *-------|---------|-------|---------|--------------------
+		 *   0   |    1    |   1   |    1    | e1000_fc_tx_pause
+		 */
+		else if (!(pcs_adv_reg & E1000_TXCW_PAUSE) &&
+			 (pcs_adv_reg & E1000_TXCW_ASM_DIR) &&
+			 (pcs_lp_ability_reg & E1000_TXCW_PAUSE) &&
+			 (pcs_lp_ability_reg & E1000_TXCW_ASM_DIR)) {
+			hw->fc.current_mode = e1000_fc_tx_pause;
+			e_dbg("Flow Control = Tx PAUSE frames only.\n");
+		}
+		/* For transmitting PAUSE frames ONLY.
+		 *
+		 *   LOCAL DEVICE  |   LINK PARTNER
+		 * PAUSE | ASM_DIR | PAUSE | ASM_DIR | Result
+		 *-------|---------|-------|---------|--------------------
+		 *   1   |    1    |   0   |    1    | e1000_fc_rx_pause
+		 */
+		else if ((pcs_adv_reg & E1000_TXCW_PAUSE) &&
+			 (pcs_adv_reg & E1000_TXCW_ASM_DIR) &&
+			 !(pcs_lp_ability_reg & E1000_TXCW_PAUSE) &&
+			 (pcs_lp_ability_reg & E1000_TXCW_ASM_DIR)) {
+			hw->fc.current_mode = e1000_fc_rx_pause;
+			e_dbg("Flow Control = Rx PAUSE frames only.\n");
+		} else {
+			/* Per the IEEE spec, at this point flow control
+			 * should be disabled.
+			 */
+			hw->fc.current_mode = e1000_fc_none;
+			e_dbg("Flow Control = NONE.\n");
+		}
+
+		/* Now we call a subroutine to actually force the MAC
+		 * controller to use the correct flow control settings.
+		 */
+		pcs_ctrl_reg = er32(PCS_LCTL);
+		pcs_ctrl_reg |= E1000_PCS_LCTL_FORCE_FCTRL;
+		ew32(PCS_LCTL, pcs_ctrl_reg);
+
+		ret_val = e1000e_force_mac_fc(hw);
+		if (ret_val) {
+			e_dbg("Error forcing flow control settings\n");
+			return ret_val;
+		}
+	}
+
 	return 0;
 }
 
@@ -1231,8 +1355,8 @@ s32 e1000e_get_speed_and_duplex_copper(struct e1000_hw *hw, u16 *speed,
  *  Sets the speed and duplex to gigabit full duplex (the only possible option)
  *  for fiber/serdes links.
  **/
-s32 e1000e_get_speed_and_duplex_fiber_serdes(struct e1000_hw *hw, u16 *speed,
-					     u16 *duplex)
+s32 e1000e_get_speed_and_duplex_fiber_serdes(struct e1000_hw __always_unused
+					     *hw, u16 *speed, u16 *duplex)
 {
 	*speed = SPEED_1000;
 	*duplex = FULL_DUPLEX;