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

Pull networking changes from David S Miller:

 1) Remove the ipv4 routing cache.  Now lookups go directly into the FIB
    trie and use prebuilt routes cached there.

    No more garbage collection, no more rDOS attacks on the routing
    cache.  Instead we now get predictable and consistent performance,
    no matter what the pattern of traffic we service.

    This has been almost 2 years in the making.  Special thanks to
    Julian Anastasov, Eric Dumazet, Steffen Klassert, and others who
    have helped along the way.

    I'm sure that with a change of this magnitude there will be some
    kind of fallout, but such things ought the be simple to fix at this
    point.  Luckily I'm not European so I'll be around all of August to
    fix things :-)

    The major stages of this work here are each fronted by a forced
    merge commit whose commit message contains a top-level description
    of the motivations and implementation issues.

 2) Pre-demux of established ipv4 TCP sockets, saves a route demux on
    input.

 3) TCP SYN/ACK performance tweaks from Eric Dumazet.

 4) Add namespace support for netfilter L4 conntrack helpers, from Gao
    Feng.

 5) Add config mechanism for Energy Efficient Ethernet to ethtool, from
    Yuval Mintz.

 6) Remove quadratic behavior from /proc/net/unix, from Eric Dumazet.

 7) Support for connection tracker helpers in userspace, from Pablo
    Neira Ayuso.

 8) Allow userspace driven TX load balancing functions in TEAM driver,
    from Jiri Pirko.

 9) Kill off NLMSG_PUT and RTA_PUT macros, more gross stuff with
    embedded gotos.

10) TCP Small Queues, essentially minimize the amount of TCP data queued
    up in the packet scheduler layer.  Whereas the existing BQL (Byte
    Queue Limits) limits the pkt_sched --> netdevice queuing levels,
    this controls the TCP --> pkt_sched queueing levels.

    From Eric Dumazet.

11) Reduce the number of get_page/put_page ops done on SKB fragments,
    from Alexander Duyck.

12) Implement protection against blind resets in TCP (RFC 5961), from
    Eric Dumazet.

13) Support the client side of TCP Fast Open, basically the ability to
    send data in the SYN exchange, from Yuchung Cheng.

    Basically, the sender queues up data with a sendmsg() call using
    MSG_FASTOPEN, then they do the connect() which emits the queued up
    fastopen data.

14) Avoid all the problems we get into in TCP when timers or PMTU events
    hit a locked socket.  The TCP Small Queues changes added a
    tcp_release_cb() that allows us to queue work up to the
    release_sock() caller, and that's what we use here too.  From Eric
    Dumazet.

15) Zero copy on TX support for TUN driver, from Michael S. Tsirkin.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1870 commits)
  genetlink: define lockdep_genl_is_held() when CONFIG_LOCKDEP
  r8169: revert "add byte queue limit support".
  ipv4: Change rt->rt_iif encoding.
  net: Make skb->skb_iif always track skb->dev
  ipv4: Prepare for change of rt->rt_iif encoding.
  ipv4: Remove all RTCF_DIRECTSRC handliing.
  ipv4: Really ignore ICMP address requests/replies.
  decnet: Don't set RTCF_DIRECTSRC.
  net/ipv4/ip_vti.c: Fix __rcu warnings detected by sparse.
  ipv4: Remove redundant assignment
  rds: set correct msg_namelen
  openvswitch: potential NULL deref in sample()
  tcp: dont drop MTU reduction indications
  bnx2x: Add new 57840 device IDs
  tcp: avoid oops in tcp_metrics and reset tcpm_stamp
  niu: Change niu_rbr_fill() to use unlikely() to check niu_rbr_add_page() return value
  niu: Fix to check for dma mapping errors.
  net: Fix references to out-of-scope variables in put_cmsg_compat()
  net: ethernet: davinci_emac: add pm_runtime support
  net: ethernet: davinci_emac: Remove unnecessary #include
  ...

1 files changed, 0 insertions, 416 deletions

diff --git a/drivers/net/wireless/iwmc3200wifi/fw.c b/drivers/net/wireless/iwmc3200wifi/fw.c
deleted file mode 100644
index 6f1afe6bbc8c..000000000000
--- a/drivers/net/wireless/iwmc3200wifi/fw.c
+++ /dev/null
@@ -1,416 +0,0 @@
-/*
- * Intel Wireless Multicomm 3200 WiFi driver
- *
- * Copyright (C) 2009 Intel Corporation. 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 of 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.
- *
- *
- * Intel Corporation <ilw@linux.intel.com>
- * Samuel Ortiz <samuel.ortiz@intel.com>
- * Zhu Yi <yi.zhu@intel.com>
- *
- */
-
-#include <linux/kernel.h>
-#include <linux/firmware.h>
-
-#include "iwm.h"
-#include "bus.h"
-#include "hal.h"
-#include "umac.h"
-#include "debug.h"
-#include "fw.h"
-#include "commands.h"
-
-static const char fw_barker[] = "*WESTOPFORNOONE*";
-
-/*
- * @op_code: Op code we're looking for.
- * @index: There can be several instances of the same opcode within
- *         the firmware. Index specifies which one we're looking for.
- */
-static int iwm_fw_op_offset(struct iwm_priv *iwm, const struct firmware *fw,
-			    u16 op_code, u32 index)
-{
-	int offset = -EINVAL, fw_offset;
-	u32 op_index = 0;
-	const u8 *fw_ptr;
-	struct iwm_fw_hdr_rec *rec;
-
-	fw_offset = 0;
-	fw_ptr = fw->data;
-
-	/* We first need to look for the firmware barker */
-	if (memcmp(fw_ptr, fw_barker, IWM_HDR_BARKER_LEN)) {
-		IWM_ERR(iwm, "No barker string in this FW\n");
-		return -EINVAL;
-	}
-
-	if (fw->size < IWM_HDR_LEN) {
-		IWM_ERR(iwm, "FW is too small (%zu)\n", fw->size);
-		return -EINVAL;
-	}
-
-	fw_offset += IWM_HDR_BARKER_LEN;
-
-	while (fw_offset < fw->size) {
-		rec = (struct iwm_fw_hdr_rec *)(fw_ptr + fw_offset);
-
-		IWM_DBG_FW(iwm, DBG, "FW: op_code: 0x%x, len: %d @ 0x%x\n",
-			   rec->op_code, rec->len, fw_offset);
-
-		if (rec->op_code == IWM_HDR_REC_OP_INVALID) {
-			IWM_DBG_FW(iwm, DBG, "Reached INVALID op code\n");
-			break;
-		}
-
-		if (rec->op_code == op_code) {
-			if (op_index == index) {
-				fw_offset += sizeof(struct iwm_fw_hdr_rec);
-				offset = fw_offset;
-				goto out;
-			}
-			op_index++;
-		}
-
-		fw_offset += sizeof(struct iwm_fw_hdr_rec) + rec->len;
-	}
-
- out:
-	return offset;
-}
-
-static int iwm_load_firmware_chunk(struct iwm_priv *iwm,
-				   const struct firmware *fw,
-				   struct iwm_fw_img_desc *img_desc)
-{
-	struct iwm_udma_nonwifi_cmd target_cmd;
-	u32 chunk_size;
-	const u8 *chunk_ptr;
-	int ret = 0;
-
-	IWM_DBG_FW(iwm, INFO, "Loading FW chunk: %d bytes @ 0x%x\n",
-		   img_desc->length, img_desc->address);
-
-	target_cmd.opcode = UMAC_HDI_OUT_OPCODE_WRITE;
-	target_cmd.handle_by_hw = 1;
-	target_cmd.op2 = 0;
-	target_cmd.resp = 0;
-	target_cmd.eop = 1;
-
-	chunk_size = img_desc->length;
-	chunk_ptr = fw->data + img_desc->offset;
-
-	while (chunk_size > 0) {
-		u32 tmp_chunk_size;
-
-		tmp_chunk_size = min_t(u32, chunk_size,
-				       IWM_MAX_NONWIFI_CMD_BUFF_SIZE);
-
-		target_cmd.addr = cpu_to_le32(img_desc->address +
-				    (chunk_ptr - fw->data - img_desc->offset));
-		target_cmd.op1_sz = cpu_to_le32(tmp_chunk_size);
-
-		IWM_DBG_FW(iwm, DBG, "\t%d bytes @ 0x%x\n",
-			   tmp_chunk_size, target_cmd.addr);
-
-		ret = iwm_hal_send_target_cmd(iwm, &target_cmd, chunk_ptr);
-		if (ret < 0) {
-			IWM_ERR(iwm, "Couldn't load FW chunk\n");
-			break;
-		}
-
-		chunk_size -= tmp_chunk_size;
-		chunk_ptr += tmp_chunk_size;
-	}
-
-	return ret;
-}
-/*
- * To load a fw image to the target, we basically go through the
- * fw, looking for OP_MEM_DESC records. Once we found one, we
- * pass it to iwm_load_firmware_chunk().
- * The OP_MEM_DESC records contain the actuall memory chunk to be
- * sent, but also the destination address.
- */
-static int iwm_load_img(struct iwm_priv *iwm, const char *img_name)
-{
-	const struct firmware *fw;
-	struct iwm_fw_img_desc *img_desc;
-	struct iwm_fw_img_ver *ver;
-	int ret = 0, fw_offset;
-	u32 opcode_idx = 0, build_date;
-	char *build_tag;
-
-	ret = request_firmware(&fw, img_name, iwm_to_dev(iwm));
-	if (ret) {
-		IWM_ERR(iwm, "Request firmware failed");
-		return ret;
-	}
-
-	IWM_DBG_FW(iwm, INFO, "Start to load FW %s\n", img_name);
-
-	while (1) {
-		fw_offset = iwm_fw_op_offset(iwm, fw,
-					     IWM_HDR_REC_OP_MEM_DESC,
-					     opcode_idx);
-		if (fw_offset < 0)
-			break;
-
-		img_desc = (struct iwm_fw_img_desc *)(fw->data + fw_offset);
-		ret = iwm_load_firmware_chunk(iwm, fw, img_desc);
-		if (ret < 0)
-			goto err_release_fw;
-		opcode_idx++;
-	}
-
-	/* Read firmware version */
-	fw_offset = iwm_fw_op_offset(iwm, fw, IWM_HDR_REC_OP_SW_VER, 0);
-	if (fw_offset < 0)
-		goto err_release_fw;
-
-	ver = (struct iwm_fw_img_ver *)(fw->data + fw_offset);
-
-	/* Read build tag */
-	fw_offset = iwm_fw_op_offset(iwm, fw, IWM_HDR_REC_OP_BUILD_TAG, 0);
-	if (fw_offset < 0)
-		goto err_release_fw;
-
-	build_tag = (char *)(fw->data + fw_offset);
-
-	/* Read build date */
-	fw_offset = iwm_fw_op_offset(iwm, fw, IWM_HDR_REC_OP_BUILD_DATE, 0);
-	if (fw_offset < 0)
-		goto err_release_fw;
-
-	build_date = *(u32 *)(fw->data + fw_offset);
-
-	IWM_INFO(iwm, "%s:\n", img_name);
-	IWM_INFO(iwm, "\tVersion:    %02X.%02X\n", ver->major, ver->minor);
-	IWM_INFO(iwm, "\tBuild tag:  %s\n", build_tag);
-	IWM_INFO(iwm, "\tBuild date: %x-%x-%x\n",
-		 IWM_BUILD_YEAR(build_date), IWM_BUILD_MONTH(build_date),
-		 IWM_BUILD_DAY(build_date));
-
-	if (!strcmp(img_name, iwm->bus_ops->umac_name))
-		sprintf(iwm->umac_version, "%02X.%02X",
-			ver->major, ver->minor);
-
-	if (!strcmp(img_name, iwm->bus_ops->lmac_name))
-		sprintf(iwm->lmac_version, "%02X.%02X",
-			ver->major, ver->minor);
-
- err_release_fw:
-	release_firmware(fw);
-
-	return ret;
-}
-
-static int iwm_load_umac(struct iwm_priv *iwm)
-{
-	struct iwm_udma_nonwifi_cmd target_cmd;
-	int ret;
-
-	ret = iwm_load_img(iwm, iwm->bus_ops->umac_name);
-	if (ret < 0)
-		return ret;
-
-	/* We've loaded the UMAC, we can tell the target to jump there */
-	target_cmd.opcode = UMAC_HDI_OUT_OPCODE_JUMP;
-	target_cmd.addr = cpu_to_le32(UMAC_MU_FW_INST_DATA_12_ADDR);
-	target_cmd.op1_sz = 0;
-	target_cmd.op2 = 0;
-	target_cmd.handle_by_hw = 0;
-	target_cmd.resp = 1 ;
-	target_cmd.eop = 1;
-
-	ret = iwm_hal_send_target_cmd(iwm, &target_cmd, NULL);
-	if (ret < 0)
-		IWM_ERR(iwm, "Couldn't send JMP command\n");
-
-	return ret;
-}
-
-static int iwm_load_lmac(struct iwm_priv *iwm, const char *img_name)
-{
-	int ret;
-
-	ret = iwm_load_img(iwm, img_name);
-	if (ret < 0)
-		return ret;
-
-	return iwm_send_umac_reset(iwm,
-			cpu_to_le32(UMAC_RST_CTRL_FLG_LARC_CLK_EN), 0);
-}
-
-static int iwm_init_calib(struct iwm_priv *iwm, unsigned long cfg_bitmap,
-			  unsigned long expected_bitmap, u8 rx_iq_cmd)
-{
-	/* Read RX IQ calibration result from EEPROM */
-	if (test_bit(rx_iq_cmd, &cfg_bitmap)) {
-		iwm_store_rxiq_calib_result(iwm);
-		set_bit(PHY_CALIBRATE_RX_IQ_CMD, &iwm->calib_done_map);
-	}
-
-	iwm_send_prio_table(iwm);
-	iwm_send_init_calib_cfg(iwm, cfg_bitmap);
-
-	while (iwm->calib_done_map != expected_bitmap) {
-		if (iwm_notif_handle(iwm, CALIBRATION_RES_NOTIFICATION,
-				     IWM_SRC_LMAC, WAIT_NOTIF_TIMEOUT)) {
-			IWM_DBG_FW(iwm, DBG, "Initial calibration timeout\n");
-			return -ETIMEDOUT;
-		}
-
-		IWM_DBG_FW(iwm, DBG, "Got calibration result. calib_done_map: "
-			   "0x%lx, expected calibrations: 0x%lx\n",
-			   iwm->calib_done_map, expected_bitmap);
-	}
-
-	return 0;
-}
-
-/*
- * We currently have to load 3 FWs:
- * 1) The UMAC (Upper MAC).
- * 2) The calibration LMAC (Lower MAC).
- *    We then send the calibration init command, so that the device can
- *    run a first calibration round.
- * 3) The operational LMAC, which replaces the calibration one when it's
- *    done with the first calibration round.
- *
- * Once those 3 FWs have been loaded, we send the periodic calibration
- * command, and then the device is available for regular 802.11 operations.
- */
-int iwm_load_fw(struct iwm_priv *iwm)
-{
-	unsigned long init_calib_map, periodic_calib_map;
-	unsigned long expected_calib_map;
-	int ret;
-
-	/* We first start downloading the UMAC */
-	ret = iwm_load_umac(iwm);
-	if (ret < 0) {
-		IWM_ERR(iwm, "UMAC loading failed\n");
-		return ret;
-	}
-
-	/* Handle UMAC_ALIVE notification */
-	ret = iwm_notif_handle(iwm, UMAC_NOTIFY_OPCODE_ALIVE, IWM_SRC_UMAC,
-			       WAIT_NOTIF_TIMEOUT);
-	if (ret) {
-		IWM_ERR(iwm, "Handle UMAC_ALIVE failed: %d\n", ret);
-		return ret;
-	}
-
-	/* UMAC is alive, we can download the calibration LMAC */
-	ret = iwm_load_lmac(iwm, iwm->bus_ops->calib_lmac_name);
-	if (ret) {
-		IWM_ERR(iwm, "Calibration LMAC loading failed\n");
-		return ret;
-	}
-
-	/* Handle UMAC_INIT_COMPLETE notification */
-	ret = iwm_notif_handle(iwm, UMAC_NOTIFY_OPCODE_INIT_COMPLETE,
-			       IWM_SRC_UMAC, WAIT_NOTIF_TIMEOUT);
-	if (ret) {
-		IWM_ERR(iwm, "Handle INIT_COMPLETE failed for calibration "
-			"LMAC: %d\n", ret);
-		return ret;
-	}
-
-	/* Read EEPROM data */
-	ret = iwm_eeprom_init(iwm);
-	if (ret < 0) {
-		IWM_ERR(iwm, "Couldn't init eeprom array\n");
-		return ret;
-	}
-
-	init_calib_map = iwm->conf.calib_map & IWM_CALIB_MAP_INIT_MSK;
-	expected_calib_map = iwm->conf.expected_calib_map &
-		IWM_CALIB_MAP_INIT_MSK;
-	periodic_calib_map = IWM_CALIB_MAP_PER_LMAC(iwm->conf.calib_map);
-
-	ret = iwm_init_calib(iwm, init_calib_map, expected_calib_map,
-			     CALIB_CFG_RX_IQ_IDX);
-	if (ret < 0) {
-		/* Let's try the old way */
-		ret = iwm_init_calib(iwm, expected_calib_map,
-				     expected_calib_map,
-				     PHY_CALIBRATE_RX_IQ_CMD);
-		if (ret < 0) {
-			IWM_ERR(iwm, "Calibration result timeout\n");
-			goto out;
-		}
-	}
-
-	/* Handle LMAC CALIBRATION_COMPLETE notification */
-	ret = iwm_notif_handle(iwm, CALIBRATION_COMPLETE_NOTIFICATION,
-			       IWM_SRC_LMAC, WAIT_NOTIF_TIMEOUT);
-	if (ret) {
-		IWM_ERR(iwm, "Wait for CALIBRATION_COMPLETE timeout\n");
-		goto out;
-	}
-
-	IWM_INFO(iwm, "LMAC calibration done: 0x%lx\n", iwm->calib_done_map);
-
-	iwm_send_umac_reset(iwm, cpu_to_le32(UMAC_RST_CTRL_FLG_LARC_RESET), 1);
-
-	ret = iwm_notif_handle(iwm, UMAC_CMD_OPCODE_RESET, IWM_SRC_UMAC,
-			       WAIT_NOTIF_TIMEOUT);
-	if (ret) {
-		IWM_ERR(iwm, "Wait for UMAC RESET timeout\n");
-		goto out;
-	}
-
-	/* Download the operational LMAC */
-	ret = iwm_load_lmac(iwm, iwm->bus_ops->lmac_name);
-	if (ret) {
-		IWM_ERR(iwm, "LMAC loading failed\n");
-		goto out;
-	}
-
-	ret = iwm_notif_handle(iwm, UMAC_NOTIFY_OPCODE_INIT_COMPLETE,
-			       IWM_SRC_UMAC, WAIT_NOTIF_TIMEOUT);
-	if (ret) {
-		IWM_ERR(iwm, "Handle INIT_COMPLETE failed for LMAC: %d\n", ret);
-		goto out;
-	}
-
-	iwm_send_prio_table(iwm);
-	iwm_send_calib_results(iwm);
-	iwm_send_periodic_calib_cfg(iwm, periodic_calib_map);
-	iwm_send_ct_kill_cfg(iwm, iwm->conf.ct_kill_entry,
-			     iwm->conf.ct_kill_exit);
-
-	return 0;
-
- out:
-	iwm_eeprom_exit(iwm);
-	return ret;
-}