Author: tuexen
Date: Sat Jul 7 12:28:16 2018
New Revision: 336061
URL: https://svnweb.freebsd.org/changeset/base/336061
Log:
Allow alternate TCP stack to populate the TCP FO client cookie
cache.
Without this patch, TCP FO could be used when using alternate
TCP stack, but only existing entires in the TCP client cookie
cache could be used. This cache was not populated by connections
using alternate TCP stacks.
Sponsored by: Netflix, Inc.
Modified:
head/sys/netinet/tcp_stacks/fastpath.c
head/sys/netinet/tcp_stacks/rack.c
Modified: head/sys/netinet/tcp_stacks/fastpath.c
==============================================================================
--- head/sys/netinet/tcp_stacks/fastpath.c Sat Jul 7 11:53:39 2018
(r336060)
+++ head/sys/netinet/tcp_stacks/fastpath.c Sat Jul 7 12:28:16 2018
(r336061)
@@ -109,6 +109,7 @@ __FBSDID("$FreeBSD$");
#include <netinet/tcpip.h>
#include <netinet/tcp_syncache.h>
#include <netinet/cc/cc.h>
+#include <netinet/tcp_fastopen.h>
#ifdef TCPDEBUG
#include <netinet/tcp_debug.h>
#endif /* TCPDEBUG */
@@ -1761,6 +1762,13 @@ tcp_do_segment_fastslow(struct mbuf *m, struct tcphdr
if ((tp->t_flags & TF_SACK_PERMIT) &&
(to.to_flags & TOF_SACKPERM) == 0)
tp->t_flags &= ~TF_SACK_PERMIT;
+ if (IS_FASTOPEN(tp->t_flags)) {
+ if (to.to_flags & TOF_FASTOPEN)
+ tcp_fastopen_update_cache(tp, to.to_mss,
+ to.to_tfo_len, to.to_tfo_cookie);
+ else
+ tcp_fastopen_disable_path(tp);
+ }
}
/*
@@ -2211,6 +2219,13 @@ tcp_do_segment_fastack(struct mbuf *m, struct tcphdr *
if ((tp->t_flags & TF_SACK_PERMIT) &&
(to.to_flags & TOF_SACKPERM) == 0)
tp->t_flags &= ~TF_SACK_PERMIT;
+ if (IS_FASTOPEN(tp->t_flags)) {
+ if (to.to_flags & TOF_FASTOPEN)
+ tcp_fastopen_update_cache(tp, to.to_mss,
+ to.to_tfo_len, to.to_tfo_cookie);
+ else
+ tcp_fastopen_disable_path(tp);
+ }
}
/*
Modified: head/sys/netinet/tcp_stacks/rack.c
==============================================================================
--- head/sys/netinet/tcp_stacks/rack.c Sat Jul 7 11:53:39 2018
(r336060)
+++ head/sys/netinet/tcp_stacks/rack.c Sat Jul 7 12:28:16 2018
(r336061)
@@ -6656,6 +6656,13 @@ rack_hpts_do_segment(struct mbuf *m, struct tcphdr *th
if ((tp->t_flags & TF_SACK_PERMIT) &&
(to.to_flags & TOF_SACKPERM) == 0)
tp->t_flags &= ~TF_SACK_PERMIT;
+ if (IS_FASTOPEN(tp->t_flags)) {
+ if (to.to_flags & TOF_FASTOPEN)
+ tcp_fastopen_update_cache(tp, to.to_mss,
+ to.to_tfo_len, to.to_tfo_cookie);
+ else
+ tcp_fastopen_disable_path(tp);
+ }
}
/*
* At this point we are at the initial call. Here we decide
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