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author | Eric Dumazet | 2015-04-29 01:23:49 +0200 |
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committer | David S. Miller | 2015-04-29 23:10:38 +0200 |
commit | 6e9250f59ef9efb932c84850cd221f22c2a03c4a (patch) | |
tree | 8492e1b4724aa12b31675b45e3bb681f860213f0 /net/ipv4/tcp_input.c | |
parent | tcp: prepare CC get_info() access from getsockopt() (diff) | |
download | kernel-qcow2-linux-6e9250f59ef9efb932c84850cd221f22c2a03c4a.tar.gz kernel-qcow2-linux-6e9250f59ef9efb932c84850cd221f22c2a03c4a.tar.xz kernel-qcow2-linux-6e9250f59ef9efb932c84850cd221f22c2a03c4a.zip |
tcp: add TCP_CC_INFO socket option
Some Congestion Control modules can provide per flow information,
but current way to get this information is to use netlink.
Like TCP_INFO, let's add TCP_CC_INFO so that applications can
issue a getsockopt() if they have a socket file descriptor,
instead of playing complex netlink games.
Sample usage would be :
union tcp_cc_info info;
socklen_t len = sizeof(info);
if (getsockopt(fd, SOL_TCP, TCP_CC_INFO, &info, &len) == -1)
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_input.c')
0 files changed, 0 insertions, 0 deletions