From: Priyaranjan Jha Date: Sun, 4 Mar 2018 18:38:35 +0000 (-0800) Subject: tcp: add send queue size stat in SCM_TIMESTAMPING_OPT_STATS X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=87ecc95d81d951b0984f2eb9c5c118cb68d0dce8;p=openwrt%2Fstaging%2Fblogic.git tcp: add send queue size stat in SCM_TIMESTAMPING_OPT_STATS This patch adds TCP_NLA_SENDQ_SIZE stat into SCM_TIMESTAMPING_OPT_STATS. It reports no. of bytes present in send queue, when timestamp is generated. Signed-off-by: Priyaranjan Jha Signed-off-by: Neal Cardwell Signed-off-by: Yuchung Cheng Signed-off-by: Soheil Hassas Yeganeh Signed-off-by: David S. Miller --- diff --git a/include/uapi/linux/tcp.h b/include/uapi/linux/tcp.h index b4a4f64635fa..93bad2128ef6 100644 --- a/include/uapi/linux/tcp.h +++ b/include/uapi/linux/tcp.h @@ -241,6 +241,7 @@ enum { TCP_NLA_MIN_RTT, /* minimum RTT */ TCP_NLA_RECUR_RETRANS, /* Recurring retransmits for the current pkt */ TCP_NLA_DELIVERY_RATE_APP_LMT, /* delivery rate application limited ? */ + TCP_NLA_SNDQ_SIZE, /* Data (bytes) pending in send queue */ }; diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index a33539798bf6..162ba4227446 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)) + - 3 * nla_total_size(sizeof(u32)) + + 4 * nla_total_size(sizeof(u32)) + 2 * nla_total_size(sizeof(u8)), GFP_ATOMIC); if (!stats) return NULL; @@ -3061,6 +3061,8 @@ 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_SNDQ_SIZE, tp->write_seq - tp->snd_una); return stats; }