tcp: add ca_state stat in SCM_TIMESTAMPING_OPT_STATS
This patch adds TCP_NLA_CA_STATE stat into SCM_TIMESTAMPING_OPT_STATS.
It reports ca_state of socket, when timestamp is generated.
Signed-off-by: Priyaranjan Jha <priyarjha@google.com>
Signed-off-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: Soheil Hassas Yeganeh <soheil@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 162ba42..fb350f7 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -3032,7 +3032,7 @@ struct sk_buff *tcp_get_timestamping_opt_stats(const struct sock *sk)
stats = alloc_skb(7 * nla_total_size_64bit(sizeof(u64)) +
4 * nla_total_size(sizeof(u32)) +
- 2 * nla_total_size(sizeof(u8)), GFP_ATOMIC);
+ 3 * nla_total_size(sizeof(u8)), GFP_ATOMIC);
if (!stats)
return NULL;
@@ -3063,6 +3063,7 @@ struct sk_buff *tcp_get_timestamping_opt_stats(const struct sock *sk)
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);
+ nla_put_u8(stats, TCP_NLA_CA_STATE, inet_csk(sk)->icsk_ca_state);
return stats;
}