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

Pull networking updates from David Miller:

 1) Seccomp BPF filters can now be JIT'd, from Alexei Starovoitov.

 2) Multiqueue support in xen-netback and xen-netfront, from Andrew J
    Benniston.

 3) Allow tweaking of aggregation settings in cdc_ncm driver, from Bjørn
    Mork.

 4) BPF now has a "random" opcode, from Chema Gonzalez.

 5) Add more BPF documentation and improve test framework, from Daniel
    Borkmann.

 6) Support TCP fastopen over ipv6, from Daniel Lee.

 7) Add software TSO helper functions and use them to support software
    TSO in mvneta and mv643xx_eth drivers.  From Ezequiel Garcia.

 8) Support software TSO in fec driver too, from Nimrod Andy.

 9) Add Broadcom SYSTEMPORT driver, from Florian Fainelli.

10) Handle broadcasts more gracefully over macvlan when there are large
    numbers of interfaces configured, from Herbert Xu.

11) Allow more control over fwmark used for non-socket based responses,
    from Lorenzo Colitti.

12) Do TCP congestion window limiting based upon measurements, from Neal
    Cardwell.

13) Support busy polling in SCTP, from Neal Horman.

14) Allow RSS key to be configured via ethtool, from Venkata Duvvuru.

15) Bridge promisc mode handling improvements from Vlad Yasevich.

16) Don't use inetpeer entries to implement ID generation any more, it
    performs poorly, from Eric Dumazet.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1522 commits)
  rtnetlink: fix userspace API breakage for iproute2 < v3.9.0
  tcp: fixing TLP's FIN recovery
  net: fec: Add software TSO support
  net: fec: Add Scatter/gather support
  net: fec: Increase buffer descriptor entry number
  net: fec: Factorize feature setting
  net: fec: Enable IP header hardware checksum
  net: fec: Factorize the .xmit transmit function
  bridge: fix compile error when compiling without IPv6 support
  bridge: fix smatch warning / potential null pointer dereference
  via-rhine: fix full-duplex with autoneg disable
  bnx2x: Enlarge the dorq threshold for VFs
  bnx2x: Check for UNDI in uncommon branch
  bnx2x: Fix 1G-baseT link
  bnx2x: Fix link for KR with swapped polarity lane
  sctp: Fix sk_ack_backlog wrap-around problem
  net/core: Add VF link state control policy
  net/fsl: xgmac_mdio is dependent on OF_MDIO
  net/fsl: Make xgmac_mdio read error message useful
  net_sched: drr: warn when qdisc is not work conserving
  ...

1 files changed, 43 insertions, 37 deletions

diff --git a/drivers/net/wireless/brcm80211/brcmfmac/fwsignal.c b/drivers/net/wireless/brcm80211/brcmfmac/fwsignal.c
index c3e7d76dbf35..699908de314a 100644
--- a/drivers/net/wireless/brcm80211/brcmfmac/fwsignal.c
+++ b/drivers/net/wireless/brcm80211/brcmfmac/fwsignal.c
@@ -476,6 +476,7 @@ struct brcmf_fws_info {
 	bool bus_flow_blocked;
 	bool creditmap_received;
 	u8 mode;
+	bool avoid_queueing;
 };
 
 /*
@@ -1369,13 +1370,12 @@ done:
 }
 
 static int brcmf_fws_txstatus_suppressed(struct brcmf_fws_info *fws, int fifo,
-					 struct sk_buff *skb, u32 genbit,
-					 u16 seq)
+					 struct sk_buff *skb, u8 ifidx,
+					 u32 genbit, u16 seq)
 {
 	struct brcmf_fws_mac_descriptor *entry = brcmf_skbcb(skb)->mac;
 	u32 hslot;
 	int ret;
-	u8 ifidx;
 
 	hslot = brcmf_skb_htod_tag_get_field(skb, HSLOT);
 
@@ -1389,29 +1389,21 @@ static int brcmf_fws_txstatus_suppressed(struct brcmf_fws_info *fws, int fifo,
 
 	entry->generation = genbit;
 
-	ret = brcmf_proto_hdrpull(fws->drvr, false, &ifidx, skb);
-	if (ret == 0) {
-		brcmf_skb_htod_tag_set_field(skb, GENERATION, genbit);
-		brcmf_skbcb(skb)->htod_seq = seq;
-		if (brcmf_skb_htod_seq_get_field(skb, FROMFW)) {
-			brcmf_skb_htod_seq_set_field(skb, FROMDRV, 1);
-			brcmf_skb_htod_seq_set_field(skb, FROMFW, 0);
-		} else {
-			brcmf_skb_htod_seq_set_field(skb, FROMDRV, 0);
-		}
-		ret = brcmf_fws_enq(fws, BRCMF_FWS_SKBSTATE_SUPPRESSED, fifo,
-				    skb);
+	brcmf_skb_htod_tag_set_field(skb, GENERATION, genbit);
+	brcmf_skbcb(skb)->htod_seq = seq;
+	if (brcmf_skb_htod_seq_get_field(skb, FROMFW)) {
+		brcmf_skb_htod_seq_set_field(skb, FROMDRV, 1);
+		brcmf_skb_htod_seq_set_field(skb, FROMFW, 0);
+	} else {
+		brcmf_skb_htod_seq_set_field(skb, FROMDRV, 0);
 	}
+	ret = brcmf_fws_enq(fws, BRCMF_FWS_SKBSTATE_SUPPRESSED, fifo, skb);
 
 	if (ret != 0) {
-		/* suppress q is full or hdrpull failed, drop this packet */
-		brcmf_fws_hanger_poppkt(&fws->hanger, hslot, &skb,
-					true);
+		/* suppress q is full drop this packet */
+		brcmf_fws_hanger_poppkt(&fws->hanger, hslot, &skb, true);
 	} else {
-		/*
-		 * Mark suppressed to avoid a double free during
-		 * wlfc cleanup
-		 */
+		/* Mark suppressed to avoid a double free during wlfc cleanup */
 		brcmf_fws_hanger_mark_suppressed(&fws->hanger, hslot);
 	}
 
@@ -1428,6 +1420,7 @@ brcmf_fws_txs_process(struct brcmf_fws_info *fws, u8 flags, u32 hslot,
 	struct sk_buff *skb;
 	struct brcmf_skbuff_cb *skcb;
 	struct brcmf_fws_mac_descriptor *entry = NULL;
+	u8 ifidx;
 
 	brcmf_dbg(DATA, "flags %d\n", flags);
 
@@ -1476,12 +1469,15 @@ brcmf_fws_txs_process(struct brcmf_fws_info *fws, u8 flags, u32 hslot,
 	}
 	brcmf_fws_macdesc_return_req_credit(skb);
 
+	if (brcmf_proto_hdrpull(fws->drvr, false, &ifidx, skb)) {
+		brcmu_pkt_buf_free_skb(skb);
+		return -EINVAL;
+	}
 	if (!remove_from_hanger)
-		ret = brcmf_fws_txstatus_suppressed(fws, fifo, skb, genbit,
-						    seq);
-
+		ret = brcmf_fws_txstatus_suppressed(fws, fifo, skb, ifidx,
+						    genbit, seq);
 	if (remove_from_hanger || ret)
-		brcmf_txfinalize(fws->drvr, skb, true);
+		brcmf_txfinalize(fws->drvr, skb, ifidx, true);
 
 	return 0;
 }
@@ -1868,7 +1864,7 @@ int brcmf_fws_process_skb(struct brcmf_if *ifp, struct sk_buff *skb)
 	struct ethhdr *eh = (struct ethhdr *)(skb->data);
 	int fifo = BRCMF_FWS_FIFO_BCMC;
 	bool multicast = is_multicast_ether_addr(eh->h_dest);
-	bool pae = eh->h_proto == htons(ETH_P_PAE);
+	int rc = 0;
 
 	brcmf_dbg(DATA, "tx proto=0x%X\n", ntohs(eh->h_proto));
 	/* determine the priority */
@@ -1876,8 +1872,13 @@ int brcmf_fws_process_skb(struct brcmf_if *ifp, struct sk_buff *skb)
 		skb->priority = cfg80211_classify8021d(skb, NULL);
 
 	drvr->tx_multicast += !!multicast;
-	if (pae)
-		atomic_inc(&ifp->pend_8021x_cnt);
+
+	if (fws->avoid_queueing) {
+		rc = brcmf_proto_txdata(drvr, ifp->ifidx, 0, skb);
+		if (rc < 0)
+			brcmf_txfinalize(drvr, skb, ifp->ifidx, false);
+		return rc;
+	}
 
 	/* set control buffer information */
 	skcb->if_flags = 0;
@@ -1899,15 +1900,12 @@ int brcmf_fws_process_skb(struct brcmf_if *ifp, struct sk_buff *skb)
 		brcmf_fws_schedule_deq(fws);
 	} else {
 		brcmf_err("drop skb: no hanger slot\n");
-		if (pae) {
-			atomic_dec(&ifp->pend_8021x_cnt);
-			if (waitqueue_active(&ifp->pend_8021x_wait))
-				wake_up(&ifp->pend_8021x_wait);
-		}
-		brcmu_pkt_buf_free_skb(skb);
+		brcmf_txfinalize(drvr, skb, ifp->ifidx, false);
+		rc = -ENOMEM;
 	}
 	brcmf_fws_unlock(fws);
-	return 0;
+
+	return rc;
 }
 
 void brcmf_fws_reset_interface(struct brcmf_if *ifp)
@@ -1982,7 +1980,8 @@ static void brcmf_fws_dequeue_worker(struct work_struct *worker)
 				ret = brcmf_proto_txdata(drvr, ifidx, 0, skb);
 				brcmf_fws_lock(fws);
 				if (ret < 0)
-					brcmf_txfinalize(drvr, skb, false);
+					brcmf_txfinalize(drvr, skb, ifidx,
+							 false);
 				if (fws->bus_flow_blocked)
 					break;
 			}
@@ -2039,6 +2038,13 @@ int brcmf_fws_init(struct brcmf_pub *drvr)
 	fws->drvr = drvr;
 	fws->fcmode = fcmode;
 
+	if ((drvr->bus_if->always_use_fws_queue == false) &&
+	    (fcmode == BRCMF_FWS_FCMODE_NONE)) {
+		fws->avoid_queueing = true;
+		brcmf_dbg(INFO, "FWS queueing will be avoided\n");
+		return 0;
+	}
+
 	fws->fws_wq = create_singlethread_workqueue("brcmf_fws_wq");
 	if (fws->fws_wq == NULL) {
 		brcmf_err("workqueue creation failed\n");