diff options
| author | Julian Anastasov <ja@ssi.bg> | 2017-02-06 22:14:14 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-02-07 19:07:46 +0100 |
| commit | c3a2e8370534f810cac6050169db0ed3e0f94f0b (patch) | |
| tree | e7d955ab2ffde6bb88cf6b3c69ea41a4841e6d9f | |
| parent | sctp: add dst_pending_confirm flag (diff) | |
| download | linux-c3a2e8370534f810cac6050169db0ed3e0f94f0b.tar.xz linux-c3a2e8370534f810cac6050169db0ed3e0f94f0b.zip | |
tcp: replace dst_confirm with sk_dst_confirm
When same struct dst_entry can be used for many different
neighbours we can not use it for pending confirmations.
Use the new sk_dst_confirm() helper to propagate the
indication from received packets to sock_confirm_neigh().
Reported-by: YueHaibing <yuehaibing@huawei.com>
Fixes: 5110effee8fd ("net: Do delayed neigh confirmation.")
Fixes: f2bb4bedf35d ("ipv4: Cache output routes in fib_info nexthops.")
Tested-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Julian Anastasov <ja@ssi.bg>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/ipv4/tcp_input.c | 12 | ||||
| -rw-r--r-- | net/ipv4/tcp_metrics.c | 7 | ||||
| -rw-r--r-- | net/ipv4/tcp_output.c | 2 |
3 files changed, 7 insertions, 14 deletions
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c index 27c95acbb52f..2c0ff327b6df 100644 --- a/net/ipv4/tcp_input.c +++ b/net/ipv4/tcp_input.c @@ -3644,11 +3644,8 @@ static int tcp_ack(struct sock *sk, const struct sk_buff *skb, int flag) if (tp->tlp_high_seq) tcp_process_tlp_ack(sk, ack, flag); - if ((flag & FLAG_FORWARD_PROGRESS) || !(flag & FLAG_NOT_DUP)) { - struct dst_entry *dst = __sk_dst_get(sk); - if (dst) - dst_confirm(dst); - } + if ((flag & FLAG_FORWARD_PROGRESS) || !(flag & FLAG_NOT_DUP)) + sk_dst_confirm(sk); if (icsk->icsk_pending == ICSK_TIME_RETRANS) tcp_schedule_loss_probe(sk); @@ -5995,7 +5992,6 @@ int tcp_rcv_state_process(struct sock *sk, struct sk_buff *skb) break; case TCP_FIN_WAIT1: { - struct dst_entry *dst; int tmo; /* If we enter the TCP_FIN_WAIT1 state and we are a @@ -6022,9 +6018,7 @@ int tcp_rcv_state_process(struct sock *sk, struct sk_buff *skb) tcp_set_state(sk, TCP_FIN_WAIT2); sk->sk_shutdown |= SEND_SHUTDOWN; - dst = __sk_dst_get(sk); - if (dst) - dst_confirm(dst); + sk_dst_confirm(sk); if (!sock_flag(sk, SOCK_DEAD)) { /* Wake up lingering close() */ diff --git a/net/ipv4/tcp_metrics.c b/net/ipv4/tcp_metrics.c index b9ed0d50aead..0f46e5fe31ad 100644 --- a/net/ipv4/tcp_metrics.c +++ b/net/ipv4/tcp_metrics.c @@ -375,12 +375,10 @@ void tcp_update_metrics(struct sock *sk) u32 val; int m; + sk_dst_confirm(sk); if (sysctl_tcp_nometrics_save || !dst) return; - if (dst->flags & DST_HOST) - dst_confirm(dst); - rcu_read_lock(); if (icsk->icsk_backoff || !tp->srtt_us) { /* This session failed to estimate rtt. Why? @@ -493,11 +491,10 @@ void tcp_init_metrics(struct sock *sk) struct tcp_metrics_block *tm; u32 val, crtt = 0; /* cached RTT scaled by 8 */ + sk_dst_confirm(sk); if (!dst) goto reset; - dst_confirm(dst); - rcu_read_lock(); tm = tcp_get_metrics(sk, dst, true); if (!tm) { diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c index ccf1ef4dcba4..61f272a99a49 100644 --- a/net/ipv4/tcp_output.c +++ b/net/ipv4/tcp_output.c @@ -980,6 +980,8 @@ static int tcp_transmit_skb(struct sock *sk, struct sk_buff *skb, int clone_it, skb_set_hash_from_sk(skb, sk); atomic_add(skb->truesize, &sk->sk_wmem_alloc); + skb_set_dst_pending_confirm(skb, sk->sk_dst_pending_confirm); + /* Build TCP header and checksum it. */ th = (struct tcphdr *)skb->data; th->source = inet->inet_sport; |