diff options
| author | Yuchung Cheng <ycheng@google.com> | 2013-10-31 09:19:32 -0700 |
|---|---|---|
| committer | Moyster <oysterized@gmail.com> | 2016-09-01 12:06:58 +0200 |
| commit | 5161562919f28b13239764455b6d594e9933263e (patch) | |
| tree | 33a209e56356517821dafd57cdc9e287776a78b5 | |
| parent | 6bedb82bc4c0efd100dbcba1db16a293ebf2b1fa (diff) | |
tcp: enable sockets to use MSG_FASTOPEN by default
Applications have started to use Fast Open (e.g., Chrome browser has
such an optional flag) and the feature has gone through several
generations of kernels since 3.7 with many real network tests. It's
time to enable this flag by default for applications to test more
conveniently and extensively.
Signed-off-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: Neal Cardwell <ncardwell@google.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | Documentation/networking/ip-sysctl.txt | 4 | ||||
| -rw-r--r-- | net/ipv4/tcp_fastopen.c | 2 |
2 files changed, 3 insertions, 3 deletions
diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt index fbfc9e0d7..0b7bef45c 100644 --- a/Documentation/networking/ip-sysctl.txt +++ b/Documentation/networking/ip-sysctl.txt @@ -456,7 +456,7 @@ tcp_fastopen - INTEGER connect() to perform a TCP handshake automatically. The values (bitmap) are - 1: Enables sending data in the opening SYN on the client. + 1: Enables sending data in the opening SYN on the client w/ MSG_FASTOPEN. 2: Enables TCP Fast Open on the server side, i.e., allowing data in a SYN packet to be accepted and passed to the application before 3-way hand shake finishes. @@ -469,7 +469,7 @@ tcp_fastopen - INTEGER different ways of setting max_qlen without the TCP_FASTOPEN socket option. - Default: 0 + Default: 1 Note that the client & server side Fast Open flags (1 and 2 respectively) must be also enabled before the rest of flags can take diff --git a/net/ipv4/tcp_fastopen.c b/net/ipv4/tcp_fastopen.c index 8f7ef0ad8..bbcfb634c 100644 --- a/net/ipv4/tcp_fastopen.c +++ b/net/ipv4/tcp_fastopen.c @@ -8,7 +8,7 @@ #include <net/inetpeer.h> #include <net/tcp.h> -int sysctl_tcp_fastopen __read_mostly; +int sysctl_tcp_fastopen __read_mostly = TFO_CLIENT_ENABLE; struct tcp_fastopen_context __rcu *tcp_fastopen_ctx; |