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bpf: add icsk_retransmits to bpf_tcp_sock

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Add some inet_connection_sock fields to bpf_tcp_sock that might be useful
for debugging congestion control issues.

Cc: Eric Dumazet <edumazet@google.com>
Cc: Priyaranjan Jha <priyarjha@google.com>
Cc: Yuchung Cheng <ycheng@google.com>
Cc: Soheil Hassas Yeganeh <soheil@google.com>
Acked-by: Soheil Hassas Yeganeh <soheil@google.com>
Acked-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
This commit is contained in:
Stanislav Fomichev 2019-07-02 09:13:59 -07:00 • committed by Daniel Borkmann
parent 0357746d1e
commit c2cb5e82a7
2 changed files with 20 additions and 1 deletions
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1
include/uapi/linux/bpf.h
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@ -3078,6 +3078,7 @@ struct bpf_tcp_sock {
*/
__u32 delivered; /* Total data packets delivered incl. rexmits */
__u32 delivered_ce; /* Like the above but only ECE marked packets */
__u32 icsk_retransmits; /* Number of unrecovered [RTO] timeouts */
};
struct bpf_sock_tuple {