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

Pull networking fixes from David Miller:

 1) sunhme driver lacks DMA mapping error checks, based upon a report by
    Meelis Roos.

 2) Fix memory leak in mvpp2 driver, from Sudip Mukherjee.

 3) DMA memory allocation sizes are wrong in systemport ethernet driver,
    fix from Florian Fainelli.

 4) Fix use after free in mac80211 defragmentation code, from Johannes
    Berg.

 5) Some networking uapi headers missing from Kbuild file, from Stephen
    Hemminger.

 6) TUN driver gets csum_start offset wrong when VLAN accel is enabled,
    and macvtap has a similar bug, from Herbert Xu.

 7) Adjust several tunneling drivers to set dev->iflink after registry,
    because registry sets that to -1 overwriting whatever we did.  From
    Steffen Klassert.

 8) Geneve forgets to set inner tunneling type, causing GSO segmentation
    to fail on some NICs.  From Jesse Gross.

 9) Fix several locking bugs in stmmac driver, from Fabrice Gasnier and
    Giuseppe CAVALLARO.

10) Fix spurious timeouts with NewReno on low traffic connections, from
    Marcelo Leitner.

11) Fix descriptor updates in enic driver, from Govindarajulu
    Varadarajan.

12) PPP calls bpf_prog_create() with locks held, which isn't kosher.
    Fix from Takashi Iwai.

13) Fix NULL deref in SCTP with malformed INIT packets, from Daniel
    Borkmann.

14) psock_fanout selftest accesses past the end of the mmap ring, fix
    from Shuah Khan.

15) Fix PTP timestamping for VLAN packets, from Richard Cochran.

16) netlink_unbind() calls in netlink pass wrong initial argument, from
    Hiroaki SHIMODA.

17) vxlan socket reuse accidently reuses a socket when the address
    family is different, so we have to explicitly check this, from
    Marcelo Lietner.

18) Fix missing include in nft_reject_bridge.c breaking the build on ppc
    and other architectures, from Guenter Roeck.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (75 commits)
  vxlan: Do not reuse sockets for a different address family
  smsc911x: power-up phydev before doing a software reset.
  lib: rhashtable - Remove weird non-ASCII characters from comments
  net/smsc911x: Fix delays in the PHY enable/disable routines
  net/smsc911x: Fix rare soft reset timeout issue due to PHY power-down mode
  netlink: Properly unbind in error conditions.
  net: ptp: fix time stamp matching logic for VLAN packets.
  cxgb4 : dcb open-lldp interop fixes
  selftests/net: psock_fanout seg faults in sock_fanout_read_ring()
  net: bcmgenet: apply MII configuration in bcmgenet_open()
  net: bcmgenet: connect and disconnect from the PHY state machine
  net: qualcomm: Fix dependency
  ixgbe: phy: fix uninitialized status in ixgbe_setup_phy_link_tnx
  net: phy: Correctly handle MII ioctl which changes autonegotiation.
  ipv6: fix IPV6_PKTINFO with v4 mapped
  net: sctp: fix memory leak in auth key management
  net: sctp: fix NULL pointer dereference in af->from_addr_param on malformed packet
  net: ppp: Don't call bpf_prog_create() in ppp_lock
  net/mlx4_en: Advertize encapsulation offloads features only when VXLAN tunnel is set
  cxgb4 : Fix bug in DCB app deletion
  ...

1 files changed, 31 insertions, 29 deletions

diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index a12b455928e5..88fa2d160685 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -2315,6 +2315,35 @@ static inline bool tcp_packet_delayed(const struct tcp_sock *tp)
 
 /* Undo procedures. */
 
+/* We can clear retrans_stamp when there are no retransmissions in the
+ * window. It would seem that it is trivially available for us in
+ * tp->retrans_out, however, that kind of assumptions doesn't consider
+ * what will happen if errors occur when sending retransmission for the
+ * second time. ...It could the that such segment has only
+ * TCPCB_EVER_RETRANS set at the present time. It seems that checking
+ * the head skb is enough except for some reneging corner cases that
+ * are not worth the effort.
+ *
+ * Main reason for all this complexity is the fact that connection dying
+ * time now depends on the validity of the retrans_stamp, in particular,
+ * that successive retransmissions of a segment must not advance
+ * retrans_stamp under any conditions.
+ */
+static bool tcp_any_retrans_done(const struct sock *sk)
+{
+	const struct tcp_sock *tp = tcp_sk(sk);
+	struct sk_buff *skb;
+
+	if (tp->retrans_out)
+		return true;
+
+	skb = tcp_write_queue_head(sk);
+	if (unlikely(skb && TCP_SKB_CB(skb)->sacked & TCPCB_EVER_RETRANS))
+		return true;
+
+	return false;
+}
+
 #if FASTRETRANS_DEBUG > 1
 static void DBGUNDO(struct sock *sk, const char *msg)
 {
@@ -2410,6 +2439,8 @@ static bool tcp_try_undo_recovery(struct sock *sk)
 		 * is ACKed. For Reno it is MUST to prevent false
 		 * fast retransmits (RFC2582). SACK TCP is safe. */
 		tcp_moderate_cwnd(tp);
+		if (!tcp_any_retrans_done(sk))
+			tp->retrans_stamp = 0;
 		return true;
 	}
 	tcp_set_ca_state(sk, TCP_CA_Open);
@@ -2430,35 +2461,6 @@ static bool tcp_try_undo_dsack(struct sock *sk)
 	return false;
 }
 
-/* We can clear retrans_stamp when there are no retransmissions in the
- * window. It would seem that it is trivially available for us in
- * tp->retrans_out, however, that kind of assumptions doesn't consider
- * what will happen if errors occur when sending retransmission for the
- * second time. ...It could the that such segment has only
- * TCPCB_EVER_RETRANS set at the present time. It seems that checking
- * the head skb is enough except for some reneging corner cases that
- * are not worth the effort.
- *
- * Main reason for all this complexity is the fact that connection dying
- * time now depends on the validity of the retrans_stamp, in particular,
- * that successive retransmissions of a segment must not advance
- * retrans_stamp under any conditions.
- */
-static bool tcp_any_retrans_done(const struct sock *sk)
-{
-	const struct tcp_sock *tp = tcp_sk(sk);
-	struct sk_buff *skb;
-
-	if (tp->retrans_out)
-		return true;
-
-	skb = tcp_write_queue_head(sk);
-	if (unlikely(skb && TCP_SKB_CB(skb)->sacked & TCPCB_EVER_RETRANS))
-		return true;
-
-	return false;
-}
-
 /* Undo during loss recovery after partial ACK or using F-RTO. */
 static bool tcp_try_undo_loss(struct sock *sk, bool frto_undo)
 {