8 files changed, 62 insertions, 69 deletions

diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index 3163330cd4f1..d3a05b9ade7a 100644
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -608,11 +608,11 @@ int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type)
                 goto encrypt;
 
 auth:
-        if (test_and_set_bit(HCI_CONN_ENCRYPT_PEND, &conn->pend))
+        if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->pend))
                 return 0;
 
-        hci_conn_auth(conn, sec_level, auth_type);
-        return 0;
+        if (!hci_conn_auth(conn, sec_level, auth_type))
+                return 0;
 
 encrypt:
         if (conn->link_mode & HCI_LM_ENCRYPT)
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index e64a1c2df238..56fdd9162da9 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -4002,21 +4002,30 @@ static int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt)
                         }
                 } else if (sk->sk_state == BT_CONNECT2) {
                         struct l2cap_conn_rsp rsp;
-                        __u16 result;
+                        __u16 res, stat;
 
                         if (!status) {
-                                sk->sk_state = BT_CONFIG;
-                                result = L2CAP_CR_SUCCESS;
+                                if (bt_sk(sk)->defer_setup) {
+                                        struct sock *parent = bt_sk(sk)->parent;
+                                        res = L2CAP_CR_PEND;
+                                        stat = L2CAP_CS_AUTHOR_PEND;
+                                        parent->sk_data_ready(parent, 0);
+                                } else {
+                                        sk->sk_state = BT_CONFIG;
+                                        res = L2CAP_CR_SUCCESS;
+                                        stat = L2CAP_CS_NO_INFO;
+                                }
                         } else {
                                 sk->sk_state = BT_DISCONN;
                                 l2cap_sock_set_timer(sk, HZ / 10);
-                                result = L2CAP_CR_SEC_BLOCK;
+                                res = L2CAP_CR_SEC_BLOCK;
+                                stat = L2CAP_CS_NO_INFO;
                         }
 
                         rsp.scid   = cpu_to_le16(chan->dcid);
                         rsp.dcid   = cpu_to_le16(chan->scid);
-                        rsp.result = cpu_to_le16(result);
-                        rsp.status = cpu_to_le16(L2CAP_CS_NO_INFO);
+                        rsp.result = cpu_to_le16(res);
+                        rsp.status = cpu_to_le16(stat);
                         l2cap_send_cmd(conn, chan->ident, L2CAP_CONN_RSP,
                                                         sizeof(rsp), &rsp);
                 }
diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c
index 29b9812c8da0..2d85ca7111d3 100644
--- a/net/bridge/br_multicast.c
+++ b/net/bridge/br_multicast.c
@@ -1379,8 +1379,11 @@ static int br_multicast_ipv4_rcv(struct net_bridge *br,
         if (unlikely(ip_fast_csum((u8 *)iph, iph->ihl)))
                 return -EINVAL;
 
-        if (iph->protocol != IPPROTO_IGMP)
+        if (iph->protocol != IPPROTO_IGMP) {
+                if ((iph->daddr & IGMP_LOCAL_GROUP_MASK) != IGMP_LOCAL_GROUP)
+                        BR_INPUT_SKB_CB(skb)->mrouters_only = 1;
                 return 0;
+        }
 
         len = ntohs(iph->tot_len);
         if (skb->len < len || len < ip_hdrlen(skb))
diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index a8024eaa0e87..4a7e16b5d3f3 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -802,8 +802,6 @@ static int __ip_append_data(struct sock *sk,
         skb = skb_peek_tail(queue);
 
         exthdrlen = !skb ? rt->dst.header_len : 0;
-        length += exthdrlen;
-        transhdrlen += exthdrlen;
         mtu = cork->fragsize;
 
         hh_len = LL_RESERVED_SPACE(rt->dst.dev);
@@ -883,17 +881,16 @@ alloc_new_skb:
                         else
                                 alloclen = fraglen;
 
+                        alloclen += exthdrlen;
+
                         /* The last fragment gets additional space at tail.
                          * Note, with MSG_MORE we overallocate on fragments,
                          * because we have no idea what fragment will be
                          * the last.
                          */
-                        if (datalen == length + fraggap) {
+                        if (datalen == length + fraggap)
                                 alloclen += rt->dst.trailer_len;
-                                /* make sure mtu is not reached */
-                                if (datalen > mtu - fragheaderlen - rt->dst.trailer_len)
-                                        datalen -= ALIGN(rt->dst.trailer_len, 8);
-                        }
+
                         if (transhdrlen) {
                                 skb = sock_alloc_send_skb(sk,
                                                 alloclen + hh_len + 15,
@@ -926,11 +923,11 @@ alloc_new_skb:
                         /*
                          *      Find where to start putting bytes.
                          */
-                        data = skb_put(skb, fraglen);
+                        data = skb_put(skb, fraglen + exthdrlen);
                         skb_set_network_header(skb, exthdrlen);
                         skb->transport_header = (skb->network_header +
                                                  fragheaderlen);
-                        data += fragheaderlen;
+                        data += fragheaderlen + exthdrlen;
 
                         if (fraggap) {
                                 skb->csum = skb_copy_and_csum_bits(
@@ -1064,7 +1061,7 @@ static int ip_setup_cork(struct sock *sk, struct inet_cork *cork,
          */
         *rtp = NULL;
         cork->fragsize = inet->pmtudisc == IP_PMTUDISC_PROBE ?
-                         rt->dst.dev->mtu : dst_mtu(rt->dst.path);
+                         rt->dst.dev->mtu : dst_mtu(&rt->dst);
         cork->dst = &rt->dst;
         cork->length = 0;
         cork->tx_flags = ipc->tx_flags;
diff --git a/net/ipv4/netfilter.c b/net/ipv4/netfilter.c
index 4614babdc45f..2e97e3ec1eb7 100644
--- a/net/ipv4/netfilter.c
+++ b/net/ipv4/netfilter.c
@@ -17,51 +17,35 @@ int ip_route_me_harder(struct sk_buff *skb, unsigned addr_type)
         const struct iphdr *iph = ip_hdr(skb);
         struct rtable *rt;
         struct flowi4 fl4 = {};
-        unsigned long orefdst;
+        __be32 saddr = iph->saddr;
+        __u8 flags = 0;
         unsigned int hh_len;
-        unsigned int type;
 
-        type = inet_addr_type(net, iph->saddr);
-        if (skb->sk && inet_sk(skb->sk)->transparent)
-                type = RTN_LOCAL;
-        if (addr_type == RTN_UNSPEC)
-                addr_type = type;
+        if (!skb->sk && addr_type != RTN_LOCAL) {
+                if (addr_type == RTN_UNSPEC)
+                        addr_type = inet_addr_type(net, saddr);
+                if (addr_type == RTN_LOCAL || addr_type == RTN_UNICAST)
+                        flags |= FLOWI_FLAG_ANYSRC;
+                else
+                        saddr = 0;
+        }
 
         /* some non-standard hacks like ipt_REJECT.c:send_reset() can cause
          * packets with foreign saddr to appear on the NF_INET_LOCAL_OUT hook.
          */
-        if (addr_type == RTN_LOCAL) {
-                fl4.daddr = iph->daddr;
-                if (type == RTN_LOCAL)
-                        fl4.saddr = iph->saddr;
-                fl4.flowi4_tos = RT_TOS(iph->tos);
-                fl4.flowi4_oif = skb->sk ? skb->sk->sk_bound_dev_if : 0;
-                fl4.flowi4_mark = skb->mark;
-                fl4.flowi4_flags = skb->sk ? inet_sk_flowi_flags(skb->sk) : 0;
-                rt = ip_route_output_key(net, &fl4);
-                if (IS_ERR(rt))
-                        return -1;
-
-                /* Drop old route. */
-                skb_dst_drop(skb);
-                skb_dst_set(skb, &rt->dst);
-        } else {
-                /* non-local src, find valid iif to satisfy
-                 * rp-filter when calling ip_route_input. */
-                fl4.daddr = iph->saddr;
-                rt = ip_route_output_key(net, &fl4);
-                if (IS_ERR(rt))
-                        return -1;
+        fl4.daddr = iph->daddr;
+        fl4.saddr = saddr;
+        fl4.flowi4_tos = RT_TOS(iph->tos);
+        fl4.flowi4_oif = skb->sk ? skb->sk->sk_bound_dev_if : 0;
+        fl4.flowi4_mark = skb->mark;
+        fl4.flowi4_flags = skb->sk ? inet_sk_flowi_flags(skb->sk) : flags;
+        rt = ip_route_output_key(net, &fl4);
+        if (IS_ERR(rt))
+                return -1;
 
-                orefdst = skb->_skb_refdst;
-                if (ip_route_input(skb, iph->daddr, iph->saddr,
-                                   RT_TOS(iph->tos), rt->dst.dev) != 0) {
-                        dst_release(&rt->dst);
-                        return -1;
-                }
-                dst_release(&rt->dst);
-                refdst_drop(orefdst);
-        }
+        /* Drop old route. */
+        skb_dst_drop(skb);
+        skb_dst_set(skb, &rt->dst);
 
         if (skb_dst(skb)->error)
                 return -1;
diff --git a/net/ipv4/netfilter/ipt_REJECT.c b/net/ipv4/netfilter/ipt_REJECT.c
index 1ff79e557f96..51f13f8ec724 100644
--- a/net/ipv4/netfilter/ipt_REJECT.c
+++ b/net/ipv4/netfilter/ipt_REJECT.c
@@ -40,7 +40,6 @@ static void send_reset(struct sk_buff *oldskb, int hook)
         struct iphdr *niph;
         const struct tcphdr *oth;
         struct tcphdr _otcph, *tcph;
-        unsigned int addr_type;
 
         /* IP header checks: fragment. */
         if (ip_hdr(oldskb)->frag_off & htons(IP_OFFSET))
@@ -55,6 +54,9 @@ static void send_reset(struct sk_buff *oldskb, int hook)
         if (oth->rst)
                 return;
 
+        if (skb_rtable(oldskb)->rt_flags & (RTCF_BROADCAST | RTCF_MULTICAST))
+                return;
+
         /* Check checksum */
         if (nf_ip_checksum(oldskb, hook, ip_hdrlen(oldskb), IPPROTO_TCP))
                 return;
@@ -101,19 +103,11 @@ static void send_reset(struct sk_buff *oldskb, int hook)
         nskb->csum_start = (unsigned char *)tcph - nskb->head;
         nskb->csum_offset = offsetof(struct tcphdr, check);
 
-        addr_type = RTN_UNSPEC;
-        if (hook != NF_INET_FORWARD
-#ifdef CONFIG_BRIDGE_NETFILTER
-            || (nskb->nf_bridge && nskb->nf_bridge->mask & BRNF_BRIDGED)
-#endif
-           )
-                addr_type = RTN_LOCAL;
-
         /* ip_route_me_harder expects skb->dst to be set */
         skb_dst_set_noref(nskb, skb_dst(oldskb));
 
         nskb->protocol = htons(ETH_P_IP);
-        if (ip_route_me_harder(nskb, addr_type))
+        if (ip_route_me_harder(nskb, RTN_UNSPEC))
                 goto free_nskb;
 
         niph->ttl       = ip4_dst_hoplimit(skb_dst(nskb));
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index abca870d8ff6..48cd88e62553 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -1249,6 +1249,9 @@ csum_copy_err:
 
         if (noblock)
                 return -EAGAIN;
+
+        /* starting over for a new packet */
+        msg->msg_flags &= ~MSG_TRUNC;
         goto try_again;
 }
 
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index 41f8c9c08dba..328985c40883 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -453,8 +453,11 @@ csum_copy_err:
         }
         unlock_sock_fast(sk, slow);
 
-        if (flags & MSG_DONTWAIT)
+        if (noblock)
                 return -EAGAIN;
+
+        /* starting over for a new packet */
+        msg->msg_flags &= ~MSG_TRUNC;
         goto try_again;
 }