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| author | Yafang Shao <laoar.shao@gmail.com> | 2019-02-25 18:33:48 +0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-02-25 09:41:14 -0800 |
| commit | 9946b3410b61c6efa75a5cfb134cbd78b772b725 (patch) | |
| tree | 3a4a0c714eb594027f90193c7387b855c28afb69 /net | |
| parent | 4bfabc46f877b9c8393d17b9c0a54660af2c0cad (diff) | |
| download | linux-9946b3410b61c6efa75a5cfb134cbd78b772b725.tar.gz | |
tcp: clean up SOCK_DEBUG()
Per discussion with Daniel[1] and Eric[2], these SOCK_DEBUG() calles in TCP are not needed now. We'd better clean up it. [1] https://patchwork.ozlabs.org/patch/1035573/ [2] https://patchwork.ozlabs.org/patch/1040533/ Signed-off-by: Yafang Shao <laoar.shao@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/ipv4/tcp_input.c | 19 | ||||
| -rw-r--r-- | net/ipv6/tcp_ipv6.c | 2 |
2 files changed, 1 insertions, 20 deletions
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c index 6ac274249961..4eb0c8ca3c60 100644 --- a/net/ipv4/tcp_input.c +++ b/net/ipv4/tcp_input.c @@ -3591,7 +3591,7 @@ static int tcp_ack(struct sock *sk, const struct sk_buff *skb, int flag) * this segment (RFC793 Section 3.9). */ if (after(ack, tp->snd_nxt)) - goto invalid_ack; + return -1; if (after(ack, prior_snd_una)) { flag |= FLAG_SND_UNA_ADVANCED; @@ -3710,10 +3710,6 @@ no_queue: tcp_process_tlp_ack(sk, ack, flag); return 1; -invalid_ack: - SOCK_DEBUG(sk, "Ack %u after %u:%u\n", ack, tp->snd_una, tp->snd_nxt); - return -1; - old_ack: /* If data was SACKed, tag it and see if we should send more data. * If data was DSACKed, see if we can undo a cwnd reduction. @@ -3727,7 +3723,6 @@ old_ack: tcp_xmit_recovery(sk, rexmit); } - SOCK_DEBUG(sk, "Ack %u before %u:%u\n", ack, tp->snd_una, tp->snd_nxt); return 0; } @@ -4428,13 +4423,9 @@ static void tcp_ofo_queue(struct sock *sk) rb_erase(&skb->rbnode, &tp->out_of_order_queue); if (unlikely(!after(TCP_SKB_CB(skb)->end_seq, tp->rcv_nxt))) { - SOCK_DEBUG(sk, "ofo packet was already received\n"); tcp_drop(sk, skb); continue; } - SOCK_DEBUG(sk, "ofo requeuing : rcv_next %X seq %X - %X\n", - tp->rcv_nxt, TCP_SKB_CB(skb)->seq, - TCP_SKB_CB(skb)->end_seq); tail = skb_peek_tail(&sk->sk_receive_queue); eaten = tail && tcp_try_coalesce(sk, tail, skb, &fragstolen); @@ -4498,8 +4489,6 @@ static void tcp_data_queue_ofo(struct sock *sk, struct sk_buff *skb) NET_INC_STATS(sock_net(sk), LINUX_MIB_TCPOFOQUEUE); seq = TCP_SKB_CB(skb)->seq; end_seq = TCP_SKB_CB(skb)->end_seq; - SOCK_DEBUG(sk, "out of order segment: rcv_next %X seq %X - %X\n", - tp->rcv_nxt, seq, end_seq); p = &tp->out_of_order_queue.rb_node; if (RB_EMPTY_ROOT(&tp->out_of_order_queue)) { @@ -4775,10 +4764,6 @@ drop: if (before(TCP_SKB_CB(skb)->seq, tp->rcv_nxt)) { /* Partial packet, seq < rcv_next < end_seq */ - SOCK_DEBUG(sk, "partial packet: rcv_next %X seq %X - %X\n", - tp->rcv_nxt, TCP_SKB_CB(skb)->seq, - TCP_SKB_CB(skb)->end_seq); - tcp_dsack_set(sk, TCP_SKB_CB(skb)->seq, tp->rcv_nxt); /* If window is closed, drop tail of packet. But after @@ -5057,8 +5042,6 @@ static int tcp_prune_queue(struct sock *sk) { struct tcp_sock *tp = tcp_sk(sk); - SOCK_DEBUG(sk, "prune_queue: c=%x\n", tp->copied_seq); - NET_INC_STATS(sock_net(sk), LINUX_MIB_PRUNECALLED); if (atomic_read(&sk->sk_rmem_alloc) >= sk->sk_rcvbuf) diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c index e51cda79f0cc..57ef69a10889 100644 --- a/net/ipv6/tcp_ipv6.c +++ b/net/ipv6/tcp_ipv6.c @@ -220,8 +220,6 @@ static int tcp_v6_connect(struct sock *sk, struct sockaddr *uaddr, u32 exthdrlen = icsk->icsk_ext_hdr_len; struct sockaddr_in sin; - SOCK_DEBUG(sk, "connect: ipv4 mapped\n"); - if (__ipv6_only_sock(sk)) return -ENETUNREACH; |