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

Pull networking updates from David Miller:
 "Highlights:

   1) Steady transitioning of the BPF instructure to a generic spot so
      all kernel subsystems can make use of it, from Alexei Starovoitov.

   2) SFC driver supports busy polling, from Alexandre Rames.

   3) Take advantage of hash table in UDP multicast delivery, from David
      Held.

   4) Lighten locking, in particular by getting rid of the LRU lists, in
      inet frag handling.  From Florian Westphal.

   5) Add support for various RFC6458 control messages in SCTP, from
      Geir Ola Vaagland.

   6) Allow to filter bridge forwarding database dumps by device, from
      Jamal Hadi Salim.

   7) virtio-net also now supports busy polling, from Jason Wang.

   8) Some low level optimization tweaks in pktgen from Jesper Dangaard
      Brouer.

   9) Add support for ipv6 address generation modes, so that userland
      can have some input into the process.  From Jiri Pirko.

  10) Consolidate common TCP connection request code in ipv4 and ipv6,
      from Octavian Purdila.

  11) New ARP packet logger in netfilter, from Pablo Neira Ayuso.

  12) Generic resizable RCU hash table, with intial users in netlink and
      nftables.  From Thomas Graf.

  13) Maintain a name assignment type so that userspace can see where a
      network device name came from (enumerated by kernel, assigned
      explicitly by userspace, etc.) From Tom Gundersen.

  14) Automatic flow label generation on transmit in ipv6, from Tom
      Herbert.

  15) New packet timestamping facilities from Willem de Bruijn, meant to
      assist in measuring latencies going into/out-of the packet
      scheduler, latency from TCP data transmission to ACK, etc"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1536 commits)
  cxgb4 : Disable recursive mailbox commands when enabling vi
  net: reduce USB network driver config options.
  tg3: Modify tg3_tso_bug() to handle multiple TX rings
  amd-xgbe: Perform phy connect/disconnect at dev open/stop
  amd-xgbe: Use dma_set_mask_and_coherent to set DMA mask
  net: sun4i-emac: fix memory leak on bad packet
  sctp: fix possible seqlock seadlock in sctp_packet_transmit()
  Revert "net: phy: Set the driver when registering an MDIO bus device"
  cxgb4vf: Turn off SGE RX/TX Callback Timers and interrupts in PCI shutdown routine
  team: Simplify return path of team_newlink
  bridge: Update outdated comment on promiscuous mode
  net-timestamp: ACK timestamp for bytestreams
  net-timestamp: TCP timestamping
  net-timestamp: SCHED timestamp on entering packet scheduler
  net-timestamp: add key to disambiguate concurrent datagrams
  net-timestamp: move timestamp flags out of sk_flags
  net-timestamp: extend SCM_TIMESTAMPING ancillary data struct
  cxgb4i : Move stray CPL definitions to cxgb4 driver
  tcp: reduce spurious retransmits due to transient SACK reneging
  qlcnic: Initialize dcbnl_ops before register_netdev
  ...

1 files changed, 141 insertions, 0 deletions

diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_dcb.h b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_dcb.h
new file mode 100644
index 000000000000..1ec1d834e257
--- /dev/null
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_dcb.h
@@ -0,0 +1,141 @@
+/*
+ *  Copyright (C) 2013-2014 Chelsio Communications.  All rights reserved.
+ *
+ *  Written by Anish Bhatt (anish@chelsio.com)
+ *
+ *  This program is free software; you can redistribute it and/or modify it
+ *  under the terms and conditions of the GNU General Public License,
+ *  version 2, as published by the Free Software Foundation.
+ *
+ *  This program is distributed in the hope 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.
+ *
+ *  The full GNU General Public License is included in this distribution in
+ *  the file called "COPYING".
+ *
+ */
+
+#ifndef __CXGB4_DCB_H
+#define __CXGB4_DCB_H
+
+#include <linux/netdevice.h>
+#include <linux/dcbnl.h>
+#include <net/dcbnl.h>
+
+#ifdef CONFIG_CHELSIO_T4_DCB
+
+#define CXGB4_DCBX_FW_SUPPORT \
+	(DCB_CAP_DCBX_VER_CEE | \
+	 DCB_CAP_DCBX_VER_IEEE | \
+	 DCB_CAP_DCBX_LLD_MANAGED)
+#define CXGB4_DCBX_HOST_SUPPORT \
+	(DCB_CAP_DCBX_VER_CEE | \
+	 DCB_CAP_DCBX_VER_IEEE | \
+	 DCB_CAP_DCBX_HOST)
+
+#define CXGB4_MAX_PRIORITY      CXGB4_MAX_DCBX_APP_SUPPORTED
+#define CXGB4_MAX_TCS           CXGB4_MAX_DCBX_APP_SUPPORTED
+
+#define INIT_PORT_DCB_CMD(__pcmd, __port, __op, __action) \
+	do { \
+		memset(&(__pcmd), 0, sizeof(__pcmd)); \
+		(__pcmd).op_to_portid = \
+			cpu_to_be32(FW_CMD_OP(FW_PORT_CMD) | \
+				    FW_CMD_REQUEST | \
+				    FW_CMD_##__op | \
+				    FW_PORT_CMD_PORTID(__port)); \
+		(__pcmd).action_to_len16 = \
+			cpu_to_be32(FW_PORT_CMD_ACTION(__action) | \
+				    FW_LEN16(pcmd)); \
+	} while (0)
+
+#define INIT_PORT_DCB_READ_PEER_CMD(__pcmd, __port) \
+	INIT_PORT_DCB_CMD(__pcmd, __port, READ, FW_PORT_ACTION_DCB_READ_RECV)
+
+#define INIT_PORT_DCB_READ_LOCAL_CMD(__pcmd, __port) \
+	INIT_PORT_DCB_CMD(__pcmd, __port, READ, FW_PORT_ACTION_DCB_READ_TRANS)
+
+#define INIT_PORT_DCB_READ_SYNC_CMD(__pcmd, __port) \
+	INIT_PORT_DCB_CMD(__pcmd, __port, READ, FW_PORT_ACTION_DCB_READ_DET)
+
+#define INIT_PORT_DCB_WRITE_CMD(__pcmd, __port) \
+	INIT_PORT_DCB_CMD(__pcmd, __port, EXEC, FW_PORT_ACTION_L2_DCB_CFG)
+
+/* States we can be in for a port's Data Center Bridging.
+ */
+enum cxgb4_dcb_state {
+	CXGB4_DCB_STATE_START,		/* initial unknown state */
+	CXGB4_DCB_STATE_HOST,		/* we're using Host DCB (if at all) */
+	CXGB4_DCB_STATE_FW_INCOMPLETE,	/* using firmware DCB, incomplete */
+	CXGB4_DCB_STATE_FW_ALLSYNCED,	/* using firmware DCB, all sync'ed */
+};
+
+/* Data Center Bridging state input for the Finite State Machine.
+ */
+enum cxgb4_dcb_state_input {
+	/* Input from the firmware.
+	 */
+	CXGB4_DCB_INPUT_FW_DISABLED,	/* firmware DCB disabled */
+	CXGB4_DCB_INPUT_FW_ENABLED,	/* firmware DCB enabled */
+	CXGB4_DCB_INPUT_FW_INCOMPLETE,	/* firmware reports incomplete DCB */
+	CXGB4_DCB_INPUT_FW_ALLSYNCED,	/* firmware reports all sync'ed */
+
+};
+
+/* Firmware DCB messages that we've received so far ...
+ */
+enum cxgb4_dcb_fw_msgs {
+	CXGB4_DCB_FW_PGID	= 0x01,
+	CXGB4_DCB_FW_PGRATE	= 0x02,
+	CXGB4_DCB_FW_PRIORATE	= 0x04,
+	CXGB4_DCB_FW_PFC	= 0x08,
+	CXGB4_DCB_FW_APP_ID	= 0x10,
+};
+
+#define CXGB4_MAX_DCBX_APP_SUPPORTED 8
+
+/* Data Center Bridging support;
+ */
+struct port_dcb_info {
+	enum cxgb4_dcb_state state;	/* DCB State Machine */
+	enum cxgb4_dcb_fw_msgs msgs;	/* DCB Firmware messages received */
+	unsigned int supported;		/* OS DCB capabilities supported */
+	bool enabled;			/* OS Enabled state */
+
+	/* Cached copies of DCB information sent by the firmware (in Host
+	 * Native Endian format).
+	 */
+	u32	pgid;			/* Priority Group[0..7] */
+	u8	pfcen;			/* Priority Flow Control[0..7] */
+	u8	pg_num_tcs_supported;	/* max PG Traffic Classes */
+	u8	pfc_num_tcs_supported;	/* max PFC Traffic Classes */
+	u8	pgrate[8];		/* Priority Group Rate[0..7] */
+	u8	priorate[8];		/* Priority Rate[0..7] */
+	struct app_priority { /* Application Information */
+		u8	user_prio_map;	/* Priority Map bitfield */
+		u8	sel_field;	/* Protocol ID interpretation */
+		u16	protocolid;	/* Protocol ID */
+	} app_priority[CXGB4_MAX_DCBX_APP_SUPPORTED];
+};
+
+void cxgb4_dcb_state_init(struct net_device *);
+void cxgb4_dcb_state_fsm(struct net_device *, enum cxgb4_dcb_state_input);
+void cxgb4_dcb_handle_fw_update(struct adapter *, const struct fw_port_cmd *);
+void cxgb4_dcb_set_caps(struct adapter *, const struct fw_port_cmd *);
+extern const struct dcbnl_rtnl_ops cxgb4_dcb_ops;
+
+#define CXGB4_DCB_ENABLED true
+
+#else /* !CONFIG_CHELSIO_T4_DCB */
+
+static inline void cxgb4_dcb_state_init(struct net_device *dev)
+{
+}
+
+#define CXGB4_DCB_ENABLED false
+
+#endif /* !CONFIG_CHELSIO_T4_DCB */
+
+#endif /* __CXGB4_DCB_H */