9 files changed, 45 insertions, 27 deletions

diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c
index 6848e4760f34..79a7ef6209ff 100644
--- a/net/ipv4/devinet.c
+++ b/net/ipv4/devinet.c
@@ -90,7 +90,6 @@ static const struct nla_policy ifa_ipv4_policy[IFA_MAX+1] = {
         [IFA_LOCAL]             = { .type = NLA_U32 },
         [IFA_ADDRESS]           = { .type = NLA_U32 },
         [IFA_BROADCAST]         = { .type = NLA_U32 },
-        [IFA_ANYCAST]           = { .type = NLA_U32 },
         [IFA_LABEL]             = { .type = NLA_STRING, .len = IFNAMSIZ - 1 },
 };
 
@@ -536,9 +535,6 @@ static struct in_ifaddr *rtm_to_ifaddr(struct net *net, struct nlmsghdr *nlh)
         if (tb[IFA_BROADCAST])
                 ifa->ifa_broadcast = nla_get_be32(tb[IFA_BROADCAST]);
 
-        if (tb[IFA_ANYCAST])
-                ifa->ifa_anycast = nla_get_be32(tb[IFA_ANYCAST]);
-
         if (tb[IFA_LABEL])
                 nla_strlcpy(ifa->ifa_label, tb[IFA_LABEL], IFNAMSIZ);
         else
@@ -745,7 +741,6 @@ int devinet_ioctl(struct net *net, unsigned int cmd, void __user *arg)
                                 break;
                         inet_del_ifa(in_dev, ifap, 0);
                         ifa->ifa_broadcast = 0;
-                        ifa->ifa_anycast = 0;
                         ifa->ifa_scope = 0;
                 }
 
@@ -1113,7 +1108,6 @@ static inline size_t inet_nlmsg_size(void)
                + nla_total_size(4) /* IFA_ADDRESS */
                + nla_total_size(4) /* IFA_LOCAL */
                + nla_total_size(4) /* IFA_BROADCAST */
-               + nla_total_size(4) /* IFA_ANYCAST */
                + nla_total_size(IFNAMSIZ); /* IFA_LABEL */
 }
 
@@ -1143,9 +1137,6 @@ static int inet_fill_ifaddr(struct sk_buff *skb, struct in_ifaddr *ifa,
         if (ifa->ifa_broadcast)
                 NLA_PUT_BE32(skb, IFA_BROADCAST, ifa->ifa_broadcast);
 
-        if (ifa->ifa_anycast)
-                NLA_PUT_BE32(skb, IFA_ANYCAST, ifa->ifa_anycast);
-
         if (ifa->ifa_label[0])
                 NLA_PUT_STRING(skb, IFA_LABEL, ifa->ifa_label);
 
diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c
index 0f1557a4ac7a..0b2ac6a3d903 100644
--- a/net/ipv4/fib_frontend.c
+++ b/net/ipv4/fib_frontend.c
@@ -506,7 +506,6 @@ const struct nla_policy rtm_ipv4_policy[RTA_MAX+1] = {
         [RTA_PREFSRC]           = { .type = NLA_U32 },
         [RTA_METRICS]           = { .type = NLA_NESTED },
         [RTA_MULTIPATH]         = { .len = sizeof(struct rtnexthop) },
-        [RTA_PROTOINFO]         = { .type = NLA_U32 },
         [RTA_FLOW]              = { .type = NLA_U32 },
 };
 
diff --git a/net/ipv4/raw.c b/net/ipv4/raw.c
index fead049daf43..e7e091d365ff 100644
--- a/net/ipv4/raw.c
+++ b/net/ipv4/raw.c
@@ -608,6 +608,14 @@ static void raw_close(struct sock *sk, long timeout)
         sk_common_release(sk);
 }
 
+static int raw_destroy(struct sock *sk)
+{
+        lock_sock(sk);
+        ip_flush_pending_frames(sk);
+        release_sock(sk);
+        return 0;
+}
+
 /* This gets rid of all the nasties in af_inet. -DaveM */
 static int raw_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len)
 {
@@ -820,6 +828,7 @@ struct proto raw_prot = {
         .name              = "RAW",
         .owner             = THIS_MODULE,
         .close             = raw_close,
+        .destroy           = raw_destroy,
         .connect           = ip4_datagram_connect,
         .disconnect        = udp_disconnect,
         .ioctl             = raw_ioctl,
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index df41026b60db..96be336064fb 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -1792,7 +1792,7 @@ static int __mkroute_input(struct sk_buff *skb,
         if (err)
                 flags |= RTCF_DIRECTSRC;
 
-        if (out_dev == in_dev && err && !(flags & RTCF_MASQ) &&
+        if (out_dev == in_dev && err &&
             (IN_DEV_SHARED_MEDIA(out_dev) ||
              inet_addr_onlink(out_dev, saddr, FIB_RES_GW(*res))))
                 flags |= RTCF_DOREDIRECT;
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index f88653138621..ab66683b8043 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -1227,7 +1227,14 @@ int tcp_read_sock(struct sock *sk, read_descriptor_t *desc,
                                 copied += used;
                                 offset += used;
                         }
-                        if (offset != skb->len)
+                        /*
+                         * If recv_actor drops the lock (e.g. TCP splice
+                         * receive) the skb pointer might be invalid when
+                         * getting here: tcp_collapse might have deleted it
+                         * while aggregating skbs from the socket queue.
+                         */
+                        skb = tcp_recv_skb(sk, seq-1, &offset);
+                        if (!skb || (offset+1 != skb->len))
                                 break;
                 }
                 if (tcp_hdr(skb)->fin) {
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index b54d9d37b636..eba873e9b560 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -1392,9 +1392,9 @@ static struct sk_buff *tcp_maybe_skipping_dsack(struct sk_buff *skb,
 
         if (before(next_dup->start_seq, skip_to_seq)) {
                 skb = tcp_sacktag_skip(skb, sk, next_dup->start_seq, fack_count);
-                tcp_sacktag_walk(skb, sk, NULL,
-                                 next_dup->start_seq, next_dup->end_seq,
-                                 1, fack_count, reord, flag);
+                skb = tcp_sacktag_walk(skb, sk, NULL,
+                                     next_dup->start_seq, next_dup->end_seq,
+                                     1, fack_count, reord, flag);
         }
 
         return skb;
@@ -2483,6 +2483,20 @@ static inline void tcp_complete_cwr(struct sock *sk)
         tcp_ca_event(sk, CA_EVENT_COMPLETE_CWR);
 }
 
+static void tcp_try_keep_open(struct sock *sk)
+{
+        struct tcp_sock *tp = tcp_sk(sk);
+        int state = TCP_CA_Open;
+
+        if (tcp_left_out(tp) || tp->retrans_out || tp->undo_marker)
+                state = TCP_CA_Disorder;
+
+        if (inet_csk(sk)->icsk_ca_state != state) {
+                tcp_set_ca_state(sk, state);
+                tp->high_seq = tp->snd_nxt;
+        }
+}
+
 static void tcp_try_to_open(struct sock *sk, int flag)
 {
         struct tcp_sock *tp = tcp_sk(sk);
@@ -2496,15 +2510,7 @@ static void tcp_try_to_open(struct sock *sk, int flag)
                 tcp_enter_cwr(sk, 1);
 
         if (inet_csk(sk)->icsk_ca_state != TCP_CA_CWR) {
-                int state = TCP_CA_Open;
-
-                if (tcp_left_out(tp) || tp->retrans_out || tp->undo_marker)
-                        state = TCP_CA_Disorder;
-
-                if (inet_csk(sk)->icsk_ca_state != state) {
-                        tcp_set_ca_state(sk, state);
-                        tp->high_seq = tp->snd_nxt;
-                }
+                tcp_try_keep_open(sk);
                 tcp_moderate_cwnd(tp);
         } else {
                 tcp_cwnd_down(sk, flag);
@@ -3310,8 +3316,11 @@ no_queue:
         return 1;
 
 old_ack:
-        if (TCP_SKB_CB(skb)->sacked)
+        if (TCP_SKB_CB(skb)->sacked) {
                 tcp_sacktag_write_queue(sk, skb, prior_snd_una);
+                if (icsk->icsk_ca_state == TCP_CA_Open)
+                        tcp_try_keep_open(sk);
+        }
 
 uninteresting_ack:
         SOCK_DEBUG(sk, "Ack %u out of %u:%u\n", ack, tp->snd_una, tp->snd_nxt);
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index e399bde7813a..ad993ecb4810 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -2131,6 +2131,8 @@ void tcp_send_active_reset(struct sock *sk, gfp_t priority)
         TCP_SKB_CB(skb)->when = tcp_time_stamp;
         if (tcp_transmit_skb(sk, skb, 0, priority))
                 NET_INC_STATS(LINUX_MIB_TCPABORTFAILED);
+
+        TCP_INC_STATS(TCP_MIB_OUTRSTS);
 }
 
 /* WARNING: This routine must only be called when we have already sent
diff --git a/net/ipv4/tunnel4.c b/net/ipv4/tunnel4.c
index d3b709a6f264..cb1f0e83830b 100644
--- a/net/ipv4/tunnel4.c
+++ b/net/ipv4/tunnel4.c
@@ -97,7 +97,7 @@ static int tunnel64_rcv(struct sk_buff *skb)
 {
         struct xfrm_tunnel *handler;
 
-        if (!pskb_may_pull(skb, sizeof(struct iphdr)))
+        if (!pskb_may_pull(skb, sizeof(struct ipv6hdr)))
                 goto drop;
 
         for (handler = tunnel64_handlers; handler; handler = handler->next)
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index db1cb7c96d63..56fcda3694ba 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -420,7 +420,7 @@ void udp_err(struct sk_buff *skb, u32 info)
 /*
  * Throw away all pending data and cancel the corking. Socket is locked.
  */
-static void udp_flush_pending_frames(struct sock *sk)
+void udp_flush_pending_frames(struct sock *sk)
 {
         struct udp_sock *up = udp_sk(sk);
 
@@ -430,6 +430,7 @@ static void udp_flush_pending_frames(struct sock *sk)
                 ip_flush_pending_frames(sk);
         }
 }
+EXPORT_SYMBOL(udp_flush_pending_frames);
 
 /**
  *      udp4_hwcsum_outgoing  -  handle outgoing HW checksumming