diff options
Diffstat (limited to 'net/ipv4/tcp.c')
| -rw-r--r-- | net/ipv4/tcp.c | 54 |
1 files changed, 50 insertions, 4 deletions
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index 913f9bbfc030..1ef3165114ba 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -663,9 +663,9 @@ static void tcp_push(struct sock *sk, int flags, int mss_now, if (tcp_should_autocork(sk, skb, size_goal)) { /* avoid atomic op if TSQ_THROTTLED bit is already set */ - if (!test_bit(TSQ_THROTTLED, &tp->tsq_flags)) { + if (!test_bit(TSQ_THROTTLED, &sk->sk_tsq_flags)) { NET_INC_STATS(sock_net(sk), LINUX_MIB_TCPAUTOCORKING); - set_bit(TSQ_THROTTLED, &tp->tsq_flags); + set_bit(TSQ_THROTTLED, &sk->sk_tsq_flags); } /* It is possible TX completion already happened * before we set TSQ_THROTTLED. @@ -996,8 +996,11 @@ do_error: goto out; out_err: /* make sure we wake any epoll edge trigger waiter */ - if (unlikely(skb_queue_len(&sk->sk_write_queue) == 0 && err == -EAGAIN)) + if (unlikely(skb_queue_len(&sk->sk_write_queue) == 0 && + err == -EAGAIN)) { sk->sk_write_space(sk); + tcp_chrono_stop(sk, TCP_CHRONO_SNDBUF_LIMITED); + } return sk_stream_error(sk, flags, err); } @@ -1331,8 +1334,11 @@ do_error: out_err: err = sk_stream_error(sk, flags, err); /* make sure we wake any epoll edge trigger waiter */ - if (unlikely(skb_queue_len(&sk->sk_write_queue) == 0 && err == -EAGAIN)) + if (unlikely(skb_queue_len(&sk->sk_write_queue) == 0 && + err == -EAGAIN)) { sk->sk_write_space(sk); + tcp_chrono_stop(sk, TCP_CHRONO_SNDBUF_LIMITED); + } release_sock(sk); return err; } @@ -2702,6 +2708,25 @@ int compat_tcp_setsockopt(struct sock *sk, int level, int optname, EXPORT_SYMBOL(compat_tcp_setsockopt); #endif +static void tcp_get_info_chrono_stats(const struct tcp_sock *tp, + struct tcp_info *info) +{ + u64 stats[__TCP_CHRONO_MAX], total = 0; + enum tcp_chrono i; + + for (i = TCP_CHRONO_BUSY; i < __TCP_CHRONO_MAX; ++i) { + stats[i] = tp->chrono_stat[i - 1]; + if (i == tp->chrono_type) + stats[i] += tcp_time_stamp - tp->chrono_start; + stats[i] *= USEC_PER_SEC / HZ; + total += stats[i]; + } + + info->tcpi_busy_time = total; + info->tcpi_rwnd_limited = stats[TCP_CHRONO_RWND_LIMITED]; + info->tcpi_sndbuf_limited = stats[TCP_CHRONO_SNDBUF_LIMITED]; +} + /* Return information about state of tcp endpoint in API format. */ void tcp_get_info(struct sock *sk, struct tcp_info *info) { @@ -2794,6 +2819,7 @@ void tcp_get_info(struct sock *sk, struct tcp_info *info) info->tcpi_bytes_acked = tp->bytes_acked; info->tcpi_bytes_received = tp->bytes_received; info->tcpi_notsent_bytes = max_t(int, 0, tp->write_seq - tp->snd_nxt); + tcp_get_info_chrono_stats(tp, info); unlock_sock_fast(sk, slow); @@ -2815,6 +2841,26 @@ void tcp_get_info(struct sock *sk, struct tcp_info *info) } EXPORT_SYMBOL_GPL(tcp_get_info); +struct sk_buff *tcp_get_timestamping_opt_stats(const struct sock *sk) +{ + const struct tcp_sock *tp = tcp_sk(sk); + struct sk_buff *stats; + struct tcp_info info; + + stats = alloc_skb(3 * nla_total_size_64bit(sizeof(u64)), GFP_ATOMIC); + if (!stats) + return NULL; + + tcp_get_info_chrono_stats(tp, &info); + nla_put_u64_64bit(stats, TCP_NLA_BUSY, + info.tcpi_busy_time, TCP_NLA_PAD); + nla_put_u64_64bit(stats, TCP_NLA_RWND_LIMITED, + info.tcpi_rwnd_limited, TCP_NLA_PAD); + nla_put_u64_64bit(stats, TCP_NLA_SNDBUF_LIMITED, + info.tcpi_sndbuf_limited, TCP_NLA_PAD); + return stats; +} + static int do_tcp_getsockopt(struct sock *sk, int level, int optname, char __user *optval, int __user *optlen) { |