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author | David S. Miller <davem@davemloft.net> | 2017-08-21 17:06:42 -0700 |
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committer | David S. Miller <davem@davemloft.net> | 2017-08-21 17:06:42 -0700 |
commit | e2a7c34fb2856fd5306e307e170e3dde358d0dce (patch) | |
tree | afeb300b04186b1a1f649b2cd8a401a75878297c /net/ipv4 | |
parent | 7d3f0cd43feea1636dd7746f22fe8249b34d1b79 (diff) | |
parent | 6470812e22261d2342ef1597be62e63a0423d691 (diff) | |
download | linux-stable-e2a7c34fb2856fd5306e307e170e3dde358d0dce.tar.gz linux-stable-e2a7c34fb2856fd5306e307e170e3dde358d0dce.tar.bz2 linux-stable-e2a7c34fb2856fd5306e307e170e3dde358d0dce.zip |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Diffstat (limited to 'net/ipv4')
-rw-r--r-- | net/ipv4/igmp.c | 10 | ||||
-rw-r--r-- | net/ipv4/route.c | 13 | ||||
-rw-r--r-- | net/ipv4/tcp_input.c | 3 | ||||
-rw-r--r-- | net/ipv4/udp.c | 3 |
4 files changed, 22 insertions, 7 deletions
diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c index 9f86b5133605..ab183af0b5b6 100644 --- a/net/ipv4/igmp.c +++ b/net/ipv4/igmp.c @@ -1007,10 +1007,18 @@ int igmp_rcv(struct sk_buff *skb) { /* This basically follows the spec line by line -- see RFC1112 */ struct igmphdr *ih; - struct in_device *in_dev = __in_dev_get_rcu(skb->dev); + struct net_device *dev = skb->dev; + struct in_device *in_dev; int len = skb->len; bool dropped = true; + if (netif_is_l3_master(dev)) { + dev = dev_get_by_index_rcu(dev_net(dev), IPCB(skb)->iif); + if (!dev) + goto drop; + } + + in_dev = __in_dev_get_rcu(dev); if (!in_dev) goto drop; diff --git a/net/ipv4/route.c b/net/ipv4/route.c index 872b4cb136d3..94d4cd2d5ea4 100644 --- a/net/ipv4/route.c +++ b/net/ipv4/route.c @@ -1267,7 +1267,7 @@ static unsigned int ipv4_mtu(const struct dst_entry *dst) if (mtu) return mtu; - mtu = dst->dev->mtu; + mtu = READ_ONCE(dst->dev->mtu); if (unlikely(dst_metric_locked(dst, RTAX_MTU))) { if (rt->rt_uses_gateway && mtu > 576) @@ -2769,14 +2769,21 @@ static int inet_rtm_getroute(struct sk_buff *in_skb, struct nlmsghdr *nlh, if (rtm->rtm_flags & RTM_F_LOOKUP_TABLE) table_id = rt->rt_table_id; - if (rtm->rtm_flags & RTM_F_FIB_MATCH) + if (rtm->rtm_flags & RTM_F_FIB_MATCH) { + if (!res.fi) { + err = fib_props[res.type].error; + if (!err) + err = -EHOSTUNREACH; + goto errout_free; + } err = fib_dump_info(skb, NETLINK_CB(in_skb).portid, nlh->nlmsg_seq, RTM_NEWROUTE, table_id, rt->rt_type, res.prefix, res.prefixlen, fl4.flowi4_tos, res.fi, 0); - else + } else { err = rt_fill_info(net, dst, src, table_id, &fl4, skb, NETLINK_CB(in_skb).portid, nlh->nlmsg_seq); + } if (err < 0) goto errout_free; diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c index d73903fe8c83..ddc854728a60 100644 --- a/net/ipv4/tcp_input.c +++ b/net/ipv4/tcp_input.c @@ -3009,8 +3009,7 @@ void tcp_rearm_rto(struct sock *sk) /* delta_us may not be positive if the socket is locked * when the retrans timer fires and is rescheduled. */ - if (delta_us > 0) - rto = usecs_to_jiffies(delta_us); + rto = usecs_to_jiffies(max_t(int, delta_us, 1)); } inet_csk_reset_xmit_timer(sk, ICSK_TIME_RETRANS, rto, TCP_RTO_MAX); diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c index cb633884e825..25fb14490d6a 100644 --- a/net/ipv4/udp.c +++ b/net/ipv4/udp.c @@ -1585,7 +1585,8 @@ int udp_recvmsg(struct sock *sk, struct msghdr *msg, size_t len, int noblock, return ip_recv_error(sk, msg, len, addr_len); try_again: - peeking = off = sk_peek_offset(sk, flags); + peeking = flags & MSG_PEEK; + off = sk_peek_offset(sk, flags); skb = __skb_recv_udp(sk, flags, noblock, &peeked, &off, &err); if (!skb) return err; |