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Date: Tue, 28 Apr 2015 21:00:06 -0400 From: Neal Cardwell <ncardwell@...gle.com> To: Eric Dumazet <edumazet@...gle.com> Cc: "David S. Miller" <davem@...emloft.net>, netdev <netdev@...r.kernel.org>, Eric Dumazet <eric.dumazet@...il.com>, Yuchung Cheng <ycheng@...gle.com> Subject: Re: [PATCH net-next 2/2] tcp: add TCP_CC_INFO socket option On Tue, Apr 28, 2015 at 7:23 PM, Eric Dumazet <edumazet@...gle.com> 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 <edumazet@...gle.com> > Cc: Yuchung Cheng <ycheng@...gle.com> > Cc: Neal Cardwell <ncardwell@...gle.com> > --- Acked-by: Neal Cardwell <ncardwell@...gle.com> A very useful facility. Thanks for putting this together, Eric! neal -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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