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authorEric Dumazet <edumazet@google.com>2015-04-29 02:23:48 +0300
committerDavid S. Miller <davem@davemloft.net>2015-04-30 00:10:38 +0300
commit64f40ff5bbdb1b679fb3c4dbc8230d6517d2b8dc (patch)
tree4767b2030e5099a7a63c05c42a7d30c309d62474 /net/ipv4/tcp_vegas.h
parentbdd1f9edacb5f5835d1e6276571bbbe5b88ded48 (diff)
downloadlinux-64f40ff5bbdb1b679fb3c4dbc8230d6517d2b8dc.tar.xz
tcp: prepare CC get_info() access from getsockopt()
We would like that optional info provided by Congestion Control modules using netlink can also be read using getsockopt() This patch changes get_info() to put this information in a buffer, instead of skb, like tcp_get_info(), so that following patch can reuse this common infrastructure. Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Yuchung Cheng <ycheng@google.com> Cc: Neal Cardwell <ncardwell@google.com> Acked-by: Neal Cardwell <ncardwell@google.com> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Yuchung Cheng <ycheng@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/tcp_vegas.h')
-rw-r--r--net/ipv4/tcp_vegas.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/net/ipv4/tcp_vegas.h b/net/ipv4/tcp_vegas.h
index e8a6b33cc61d..ef9da5306c68 100644
--- a/net/ipv4/tcp_vegas.h
+++ b/net/ipv4/tcp_vegas.h
@@ -19,6 +19,7 @@ void tcp_vegas_init(struct sock *sk);
void tcp_vegas_state(struct sock *sk, u8 ca_state);
void tcp_vegas_pkts_acked(struct sock *sk, u32 cnt, s32 rtt_us);
void tcp_vegas_cwnd_event(struct sock *sk, enum tcp_ca_event event);
-int tcp_vegas_get_info(struct sock *sk, u32 ext, struct sk_buff *skb);
+size_t tcp_vegas_get_info(struct sock *sk, u32 ext, int *attr,
+ union tcp_cc_info *info);
#endif /* __TCP_VEGAS_H */