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| author | Yousuk Seung <ysseung@google.com> | 2018-03-16 10:51:07 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-03-16 15:07:48 -0400 |
| commit | 7156d194a0772f733865267e7207e0b08f81b02b (patch) | |
| tree | 55caebc768c4e1b3c9940b9feeaf10a645e22221 | |
| parent | 5dce837944de76b5ba9cff6d2a3ecde6f4838665 (diff) | |
| download | linux-7156d194a0772f733865267e7207e0b08f81b02b.tar.gz linux-7156d194a0772f733865267e7207e0b08f81b02b.tar.xz | |
tcp: add snd_ssthresh stat in SCM_TIMESTAMPING_OPT_STATS
This patch adds TCP_NLA_SND_SSTHRESH stat into SCM_TIMESTAMPING_OPT_STATS
that reports tcp_sock.snd_ssthresh.
Signed-off-by: Yousuk Seung <ysseung@google.com>
Signed-off-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: Priyaranjan Jha <priyarjha@google.com>
Signed-off-by: Soheil Hassas Yeganeh <soheil@google.com>
Signed-off-by: Yuchung Cheng <ycheng@google.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | include/uapi/linux/tcp.h | 1 | ||||
| -rw-r--r-- | net/ipv4/tcp.c | 3 |
2 files changed, 3 insertions, 1 deletions
diff --git a/include/uapi/linux/tcp.h b/include/uapi/linux/tcp.h index 4c0ae0faf7ca..560374c978f9 100644 --- a/include/uapi/linux/tcp.h +++ b/include/uapi/linux/tcp.h @@ -243,6 +243,7 @@ enum { TCP_NLA_DELIVERY_RATE_APP_LMT, /* delivery rate application limited ? */ TCP_NLA_SNDQ_SIZE, /* Data (bytes) pending in send queue */ TCP_NLA_CA_STATE, /* ca_state of socket */ + TCP_NLA_SND_SSTHRESH, /* Slow start size threshold */ }; diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index fb350f740f69..e553f84bde83 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -3031,7 +3031,7 @@ struct sk_buff *tcp_get_timestamping_opt_stats(const struct sock *sk) u32 rate; stats = alloc_skb(7 * nla_total_size_64bit(sizeof(u64)) + - 4 * nla_total_size(sizeof(u32)) + + 5 * nla_total_size(sizeof(u32)) + 3 * nla_total_size(sizeof(u8)), GFP_ATOMIC); if (!stats) return NULL; @@ -3061,6 +3061,7 @@ struct sk_buff *tcp_get_timestamping_opt_stats(const struct sock *sk) nla_put_u8(stats, TCP_NLA_RECUR_RETRANS, inet_csk(sk)->icsk_retransmits); nla_put_u8(stats, TCP_NLA_DELIVERY_RATE_APP_LMT, !!tp->rate_app_limited); + nla_put_u32(stats, TCP_NLA_SND_SSTHRESH, tp->snd_ssthresh); nla_put_u32(stats, TCP_NLA_SNDQ_SIZE, tp->write_seq - tp->snd_una); nla_put_u8(stats, TCP_NLA_CA_STATE, inet_csk(sk)->icsk_ca_state); |