[PATCH] return useful listenq info in tcp_info and INET_DIAG_INFO
From: Rick Jones <hidden>
Date: 2007-09-18 19:54:55
Return some useful information such as the maximum listen backlog and the current listen backlog in the tcp_info structure and INET_DIAG_INFO. Signed-off-by: Rick Jones <redacted> Signed-off-by: Eric Dumazet <redacted> --- diff -r bdcdd0e1ee9d net/ipv4/tcp.c
--- a/net/ipv4/tcp.c Sat Sep 01 07:00:31 2007 +0000
+++ b/net/ipv4/tcp.c Tue Sep 18 11:02:26 2007 -0700@@ -2030,8 +2030,14 @@ void tcp_get_info(struct sock *sk, struc info->tcpi_snd_mss = tp->mss_cache; info->tcpi_rcv_mss = icsk->icsk_ack.rcv_mss; - info->tcpi_unacked = tp->packets_out; - info->tcpi_sacked = tp->sacked_out; + if (sk->sk_state == TCP_LISTEN) { + info->tcpi_unacked = sk->sk_ack_backlog; + info->tcpi_sacked = sk->sk_max_ack_backlog; + } + else { + info->tcpi_unacked = tp->packets_out; + info->tcpi_sacked = tp->sacked_out; + } info->tcpi_lost = tp->lost_out; info->tcpi_retrans = tp->retrans_out; info->tcpi_fackets = tp->fackets_out;
diff -r bdcdd0e1ee9d net/ipv4/tcp_diag.c
--- a/net/ipv4/tcp_diag.c Sat Sep 01 07:00:31 2007 +0000
+++ b/net/ipv4/tcp_diag.c Tue Sep 18 11:02:26 2007 -0700@@ -25,11 +25,14 @@ static void tcp_diag_get_info(struct soc const struct tcp_sock *tp = tcp_sk(sk); struct tcp_info *info = _info; - if (sk->sk_state == TCP_LISTEN) + if (sk->sk_state == TCP_LISTEN) { r->idiag_rqueue = sk->sk_ack_backlog; - else + r->idiag_wqueue = sk->sk_max_ack_backlog; + } + else { r->idiag_rqueue = tp->rcv_nxt - tp->copied_seq; - r->idiag_wqueue = tp->write_seq - tp->snd_una; + r->idiag_wqueue = tp->write_seq - tp->snd_una; + } if (info != NULL) tcp_get_info(sk, info); }