diff options
Diffstat (limited to 'net/ipv4/tcp.c')
| -rw-r--r-- | net/ipv4/tcp.c | 20 |
1 files changed, 9 insertions, 11 deletions
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index 117982be0cab..a7d54cbcdabb 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -405,7 +405,6 @@ void tcp_init_sock(struct sock *sk) tp->snd_ssthresh = TCP_INFINITE_SSTHRESH; tp->snd_cwnd_clamp = ~0; tp->mss_cache = TCP_MSS_DEFAULT; - u64_stats_init(&tp->syncp); tp->reordering = sock_net(sk)->ipv4.sysctl_tcp_reordering; tcp_enable_early_retrans(tp); @@ -2710,9 +2709,8 @@ void tcp_get_info(struct sock *sk, struct tcp_info *info) const struct tcp_sock *tp = tcp_sk(sk); /* iff sk_type == SOCK_STREAM */ const struct inet_connection_sock *icsk = inet_csk(sk); u32 now = tcp_time_stamp, intv; - unsigned int start; - int notsent_bytes; u64 rate64; + bool slow; u32 rate; memset(info, 0, sizeof(*info)); @@ -2792,17 +2790,17 @@ void tcp_get_info(struct sock *sk, struct tcp_info *info) info->tcpi_total_retrans = tp->total_retrans; - do { - start = u64_stats_fetch_begin_irq(&tp->syncp); - put_unaligned(tp->bytes_acked, &info->tcpi_bytes_acked); - put_unaligned(tp->bytes_received, &info->tcpi_bytes_received); - } while (u64_stats_fetch_retry_irq(&tp->syncp, start)); + slow = lock_sock_fast(sk); + + put_unaligned(tp->bytes_acked, &info->tcpi_bytes_acked); + put_unaligned(tp->bytes_received, &info->tcpi_bytes_received); + info->tcpi_notsent_bytes = max_t(int, 0, tp->write_seq - tp->snd_nxt); + + unlock_sock_fast(sk, slow); + info->tcpi_segs_out = tp->segs_out; info->tcpi_segs_in = tp->segs_in; - notsent_bytes = READ_ONCE(tp->write_seq) - READ_ONCE(tp->snd_nxt); - info->tcpi_notsent_bytes = max(0, notsent_bytes); - info->tcpi_min_rtt = tcp_min_rtt(tp); info->tcpi_data_segs_in = tp->data_segs_in; info->tcpi_data_segs_out = tp->data_segs_out; |