On 04/29/2015 01:23 AM, Eric Dumazet wrote:
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 <eduma...@google.com>
Cc: Yuchung Cheng <ych...@google.com>
Cc: Neal Cardwell <ncardw...@google.com>
Presuming other cc algorithms would in future also export
internal information through this interface, would it make
sense to put tcp_cc_info into a container structure so we
don't miss out attr (vegas, dctcp, ...), like:
struct tcp_cc_exp {
u32 kind;
union tcp_cc_info info;
};
Otherwise looks good:
Acked-by: Daniel Borkmann <dan...@iogearbox.net>
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