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, 75 insertions, 52 deletions

diff --git a/drivers/net/wireless/brcm80211/brcmsmac/main.c b/drivers/net/wireless/brcm80211/brcmsmac/main.c
index 19db405..03ca653 100644
--- a/drivers/net/wireless/brcm80211/brcmsmac/main.c
+++ b/drivers/net/wireless/brcm80211/brcmsmac/main.c
@@ -18,6 +18,7 @@
 
 #include <linux/pci_ids.h>
 #include <linux/if_ether.h>
+#include <net/cfg80211.h>
 #include <net/mac80211.h>
 #include <brcm_hw_ids.h>
 #include <aiutils.h>
@@ -268,7 +269,7 @@ struct brcms_c_bit_desc {
  */
 
 /* Starting corerev for the fifo size table */
-#define XMTFIFOTBL_STARTREV	20
+#define XMTFIFOTBL_STARTREV	17
 
 struct d11init {
 	__le16 addr;
@@ -332,6 +333,12 @@ const u8 wlc_prio2prec_map[] = {
 };
 
 static const u16 xmtfifo_sz[][NFIFO] = {
+	/* corerev 17: 5120, 49152, 49152, 5376, 4352, 1280 */
+	{20, 192, 192, 21, 17, 5},
+	/* corerev 18: */
+	{0, 0, 0, 0, 0, 0},
+	/* corerev 19: */
+	{0, 0, 0, 0, 0, 0},
 	/* corerev 20: 5120, 49152, 49152, 5376, 4352, 1280 */
 	{20, 192, 192, 21, 17, 5},
 	/* corerev 21: 2304, 14848, 5632, 3584, 3584, 1280 */
@@ -342,6 +349,14 @@ static const u16 xmtfifo_sz[][NFIFO] = {
 	{20, 192, 192, 21, 17, 5},
 	/* corerev 24: 2304, 14848, 5632, 3584, 3584, 1280 */
 	{9, 58, 22, 14, 14, 5},
+	/* corerev 25: */
+	{0, 0, 0, 0, 0, 0},
+	/* corerev 26: */
+	{0, 0, 0, 0, 0, 0},
+	/* corerev 27: */
+	{0, 0, 0, 0, 0, 0},
+	/* corerev 28: 2304, 14848, 5632, 3584, 3584, 1280 */
+	{9, 58, 22, 14, 14, 5},
 };
 
 #ifdef DEBUG
@@ -878,7 +893,7 @@ brcms_c_dotxstatus(struct brcms_c_info *wlc, struct tx_status *txs)
 	tx_info = IEEE80211_SKB_CB(p);
 	h = (struct ieee80211_hdr *)((u8 *) (txh + 1) + D11_PHY_HDR_LEN);
 
-	if (tx_info->control.sta)
+	if (tx_info->rate_driver_data[0])
 		scb = &wlc->pri_scb;
 
 	if (tx_info->flags & IEEE80211_TX_CTL_AMPDU) {
@@ -1941,7 +1956,8 @@ static bool brcms_b_radio_read_hwdisabled(struct brcms_hardware *wlc_hw)
 		 * accesses phyreg throughput mac. This can be skipped since
 		 * only mac reg is accessed below
 		 */
-		flags |= SICF_PCLKE;
+		if (D11REV_GE(wlc_hw->corerev, 18))
+			flags |= SICF_PCLKE;
 
 		/*
 		 * TODO: test suspend/resume
@@ -2022,7 +2038,8 @@ void brcms_b_corereset(struct brcms_hardware *wlc_hw, u32 flags)
 	 * phyreg throughput mac, AND phy_reset is skipped at early stage when
 	 * band->pi is invalid. need to enable PHY CLK
 	 */
-	flags |= SICF_PCLKE;
+	if (D11REV_GE(wlc_hw->corerev, 18))
+		flags |= SICF_PCLKE;
 
 	/*
 	 * reset the core
@@ -2125,8 +2142,8 @@ void brcms_b_switch_macfreq(struct brcms_hardware *wlc_hw, u8 spurmode)
 {
 	struct bcma_device *core = wlc_hw->d11core;
 
-	if ((ai_get_chip_id(wlc_hw->sih) == BCM43224_CHIP_ID) ||
-	    (ai_get_chip_id(wlc_hw->sih) == BCM43225_CHIP_ID)) {
+	if ((ai_get_chip_id(wlc_hw->sih) == BCMA_CHIP_ID_BCM43224) ||
+	    (ai_get_chip_id(wlc_hw->sih) == BCMA_CHIP_ID_BCM43225)) {
 		if (spurmode == WL_SPURAVOID_ON2) {	/* 126Mhz */
 			bcma_write16(core, D11REGOFFS(tsf_clk_frac_l), 0x2082);
 			bcma_write16(core, D11REGOFFS(tsf_clk_frac_h), 0x8);
@@ -2790,7 +2807,7 @@ void brcms_b_core_phypll_ctl(struct brcms_hardware *wlc_hw, bool on)
 	tmp = 0;
 
 	if (on) {
-		if ((ai_get_chip_id(wlc_hw->sih) == BCM4313_CHIP_ID)) {
+		if ((ai_get_chip_id(wlc_hw->sih) == BCMA_CHIP_ID_BCM4313)) {
 			bcma_set32(core, D11REGOFFS(clk_ctl_st),
 				   CCS_ERSRC_REQ_HT |
 				   CCS_ERSRC_REQ_D11PLL |
@@ -3139,20 +3156,6 @@ void brcms_c_reset(struct brcms_c_info *wlc)
 	brcms_b_reset(wlc->hw);
 }
 
-/* Return the channel the driver should initialize during brcms_c_init.
- * the channel may have to be changed from the currently configured channel
- * if other configurations are in conflict (bandlocked, 11n mode disabled,
- * invalid channel for current country, etc.)
- */
-static u16 brcms_c_init_chanspec(struct brcms_c_info *wlc)
-{
-	u16 chanspec =
-	    1 | WL_CHANSPEC_BW_20 | WL_CHANSPEC_CTL_SB_NONE |
-	    WL_CHANSPEC_BAND_2G;
-
-	return chanspec;
-}
-
 void brcms_c_init_scb(struct scb *scb)
 {
 	int i;
@@ -4231,9 +4234,8 @@ static void brcms_c_radio_timer(void *arg)
 }
 
 /* common low-level watchdog code */
-static void brcms_b_watchdog(void *arg)
+static void brcms_b_watchdog(struct brcms_c_info *wlc)
 {
-	struct brcms_c_info *wlc = (struct brcms_c_info *) arg;
 	struct brcms_hardware *wlc_hw = wlc->hw;
 
 	BCMMSG(wlc->wiphy, "wl%d\n", wlc_hw->unit);
@@ -4254,10 +4256,8 @@ static void brcms_b_watchdog(void *arg)
 }
 
 /* common watchdog code */
-static void brcms_c_watchdog(void *arg)
+static void brcms_c_watchdog(struct brcms_c_info *wlc)
 {
-	struct brcms_c_info *wlc = (struct brcms_c_info *) arg;
-
 	BCMMSG(wlc->wiphy, "wl%d\n", wlc->pub->unit);
 
 	if (!wlc->pub->up)
@@ -4297,7 +4297,9 @@ static void brcms_c_watchdog(void *arg)
 
 static void brcms_c_watchdog_by_timer(void *arg)
 {
-	brcms_c_watchdog(arg);
+	struct brcms_c_info *wlc = (struct brcms_c_info *) arg;
+
+	brcms_c_watchdog(wlc);
 }
 
 static bool brcms_c_timers_init(struct brcms_c_info *wlc, int unit)
@@ -4467,11 +4469,9 @@ static int brcms_b_attach(struct brcms_c_info *wlc, struct bcma_device *core,
 	}
 
 	/* verify again the device is supported */
-	if (core->bus->hosttype == BCMA_HOSTTYPE_PCI &&
-	    !brcms_c_chipmatch(pcidev->vendor, pcidev->device)) {
-		wiphy_err(wiphy, "wl%d: brcms_b_attach: Unsupported "
-			"vendor/device (0x%x/0x%x)\n",
-			 unit, pcidev->vendor, pcidev->device);
+	if (!brcms_c_chipmatch(core)) {
+		wiphy_err(wiphy, "wl%d: brcms_b_attach: Unsupported device\n",
+			 unit);
 		err = 12;
 		goto fail;
 	}
@@ -4541,7 +4541,7 @@ static int brcms_b_attach(struct brcms_c_info *wlc, struct bcma_device *core,
 	else
 		wlc_hw->_nbands = 1;
 
-	if ((ai_get_chip_id(wlc_hw->sih) == BCM43225_CHIP_ID))
+	if ((ai_get_chip_id(wlc_hw->sih) == BCMA_CHIP_ID_BCM43225))
 		wlc_hw->_nbands = 1;
 
 	/* BMAC_NOTE: remove init of pub values when brcms_c_attach()
@@ -4608,8 +4608,12 @@ static int brcms_b_attach(struct brcms_c_info *wlc, struct bcma_device *core,
 		wlc_hw->machwcap_backup = wlc_hw->machwcap;
 
 		/* init tx fifo size */
+		WARN_ON((wlc_hw->corerev - XMTFIFOTBL_STARTREV) < 0 ||
+			(wlc_hw->corerev - XMTFIFOTBL_STARTREV) >
+				ARRAY_SIZE(xmtfifo_sz));
 		wlc_hw->xmtfifo_sz =
 		    xmtfifo_sz[(wlc_hw->corerev - XMTFIFOTBL_STARTREV)];
+		WARN_ON(!wlc_hw->xmtfifo_sz[0]);
 
 		/* Get a phy for this band */
 		wlc_hw->band->pi =
@@ -5049,7 +5053,7 @@ static void brcms_b_hw_up(struct brcms_hardware *wlc_hw)
 	wlc_hw->wlc->pub->hw_up = true;
 
 	if ((wlc_hw->boardflags & BFL_FEM)
-	    && (ai_get_chip_id(wlc_hw->sih) == BCM4313_CHIP_ID)) {
+	    && (ai_get_chip_id(wlc_hw->sih) == BCMA_CHIP_ID_BCM4313)) {
 		if (!
 		    (wlc_hw->boardrev >= 0x1250
 		     && (wlc_hw->boardflags & BFL_FEM_BT)))
@@ -5129,6 +5133,8 @@ static void brcms_c_wme_retries_write(struct brcms_c_info *wlc)
 /* make interface operational */
 int brcms_c_up(struct brcms_c_info *wlc)
 {
+	struct ieee80211_channel *ch;
+
 	BCMMSG(wlc->wiphy, "wl%d\n", wlc->pub->unit);
 
 	/* HW is turned off so don't try to access it */
@@ -5141,7 +5147,7 @@ int brcms_c_up(struct brcms_c_info *wlc)
 	}
 
 	if ((wlc->pub->boardflags & BFL_FEM)
-	    && (ai_get_chip_id(wlc->hw->sih) == BCM4313_CHIP_ID)) {
+	    && (ai_get_chip_id(wlc->hw->sih) == BCMA_CHIP_ID_BCM4313)) {
 		if (wlc->pub->boardrev >= 0x1250
 		    && (wlc->pub->boardflags & BFL_FEM_BT))
 			brcms_b_mhf(wlc->hw, MHF5, MHF5_4313_GPIOCTRL,
@@ -5195,8 +5201,9 @@ int brcms_c_up(struct brcms_c_info *wlc)
 	wlc->pub->up = true;
 
 	if (wlc->bandinit_pending) {
+		ch = wlc->pub->ieee_hw->conf.channel;
 		brcms_c_suspend_mac_and_wait(wlc);
-		brcms_c_set_chanspec(wlc, wlc->default_bss->chanspec);
+		brcms_c_set_chanspec(wlc, ch20mhz_chspec(ch->hw_value));
 		wlc->bandinit_pending = false;
 		brcms_c_enable_mac(wlc);
 	}
@@ -5397,11 +5404,6 @@ int brcms_c_set_gmode(struct brcms_c_info *wlc, u8 gmode, bool config)
 	else
 		return -EINVAL;
 
-	/* Legacy or bust when no OFDM is supported by regulatory */
-	if ((brcms_c_channel_locale_flags_in_band(wlc->cmi, band->bandunit) &
-	     BRCMS_NO_OFDM) && (gmode != GMODE_LEGACY_B))
-		return -EINVAL;
-
 	/* update configuration value */
 	if (config)
 		brcms_c_protection_upd(wlc, BRCMS_PROT_G_USER, gmode);
@@ -5782,8 +5784,12 @@ void brcms_c_print_txstatus(struct tx_status *txs)
 		 (txs->ackphyrxsh & PRXS1_SQ_MASK) >> PRXS1_SQ_SHIFT);
 }
 
-bool brcms_c_chipmatch(u16 vendor, u16 device)
+static bool brcms_c_chipmatch_pci(struct bcma_device *core)
 {
+	struct pci_dev *pcidev = core->bus->host_pci;
+	u16 vendor = pcidev->vendor;
+	u16 device = pcidev->device;
+
 	if (vendor != PCI_VENDOR_ID_BROADCOM) {
 		pr_err("unknown vendor id %04x\n", vendor);
 		return false;
@@ -5802,6 +5808,30 @@ bool brcms_c_chipmatch(u16 vendor, u16 device)
 	return false;
 }
 
+static bool brcms_c_chipmatch_soc(struct bcma_device *core)
+{
+	struct bcma_chipinfo *chipinfo = &core->bus->chipinfo;
+
+	if (chipinfo->id == BCMA_CHIP_ID_BCM4716)
+		return true;
+
+	pr_err("unknown chip id %04x\n", chipinfo->id);
+	return false;
+}
+
+bool brcms_c_chipmatch(struct bcma_device *core)
+{
+	switch (core->bus->hosttype) {
+	case BCMA_HOSTTYPE_PCI:
+		return brcms_c_chipmatch_pci(core);
+	case BCMA_HOSTTYPE_SOC:
+		return brcms_c_chipmatch_soc(core);
+	default:
+		pr_err("unknown host type: %i\n", core->bus->hosttype);
+		return false;
+	}
+}
+
 #if defined(DEBUG)
 void brcms_c_print_txdesc(struct d11txh *txh)
 {
@@ -8201,19 +8231,12 @@ bool brcms_c_dpc(struct brcms_c_info *wlc, bool bounded)
 void brcms_c_init(struct brcms_c_info *wlc, bool mute_tx)
 {
 	struct bcma_device *core = wlc->hw->d11core;
+	struct ieee80211_channel *ch = wlc->pub->ieee_hw->conf.channel;
 	u16 chanspec;
 
 	BCMMSG(wlc->wiphy, "wl%d\n", wlc->pub->unit);
 
-	/*
-	 * This will happen if a big-hammer was executed. In
-	 * that case, we want to go back to the channel that
-	 * we were on and not new channel
-	 */
-	if (wlc->pub->associated)
-		chanspec = wlc->home_chanspec;
-	else
-		chanspec = brcms_c_init_chanspec(wlc);
+	chanspec = ch20mhz_chspec(ch->hw_value);
 
 	brcms_b_init(wlc->hw, chanspec);
 
@@ -8318,7 +8341,7 @@ brcms_c_attach(struct brcms_info *wl, struct bcma_device *core, uint unit,
 	struct brcms_pub *pub;
 
 	/* allocate struct brcms_c_info state and its substructures */
-	wlc = (struct brcms_c_info *) brcms_c_attach_malloc(unit, &err, 0);
+	wlc = brcms_c_attach_malloc(unit, &err, 0);
 	if (wlc == NULL)
 		goto fail;
 	wlc->wiphy = wl->wiphy;