Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 7156d194 authored by Yousuk Seung's avatar Yousuk Seung Committed by David S. Miller
Browse files

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: default avatarYousuk Seung <ysseung@google.com>
Signed-off-by: default avatarNeal Cardwell <ncardwell@google.com>
Signed-off-by: default avatarPriyaranjan Jha <priyarjha@google.com>
Signed-off-by: default avatarSoheil Hassas Yeganeh <soheil@google.com>
Signed-off-by: default avatarYuchung Cheng <ycheng@google.com>
Reviewed-by: default avatarEric Dumazet <edumazet@google.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 5dce8379

include/uapi/linux/tcp.h

+1 −0
Original line number Diff line number Diff line
@@ -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 */



};

net/ipv4/tcp.c

+2 −1
Original line number Diff line number Diff line
@@ -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);