diff options
| author | Susant Sahani <susant@redhat.com> | 2014-08-14 14:31:47 +0530 |
|---|---|---|
| committer | Lennart Poettering <lennart@poettering.net> | 2014-08-14 13:14:39 +0200 |
| commit | 9528592ff8d7ff361da430285deba8196e8984d5 (patch) | |
| tree | 1cbe201fbd1c66e6a8c65ddedc8f7d9b96161c72 /src/core/socket.c | |
| parent | 41488fe9024a8955d19811620fd55dcc56a5b2ba (diff) | |
socket: add support for TCP fast Open
TCP Fast Open (TFO) speeds up the opening of successiveTCP)
connections between two endpoints.It works by using a TFO cookie
in the initial SYN packet to authenticate a previously connected
client. It starts sending data to the client before the receipt
of the final ACK packet of the three way handshake is received,
skipping a round trip and lowering the latency in the start of
transmission of data.
Diffstat (limited to 'src/core/socket.c')
| -rw-r--r-- | src/core/socket.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/core/socket.c b/src/core/socket.c index 5af15964ff..44827ad346 100644 --- a/src/core/socket.c +++ b/src/core/socket.c @@ -481,6 +481,7 @@ static void socket_dump(Unit *u, FILE *f, const char *prefix) { "%sDirectoryMode: %04o\n" "%sKeepAlive: %s\n" "%sNoDelay: %s\n" + "%sFastOpen: %s\n" "%sFreeBind: %s\n" "%sTransparent: %s\n" "%sBroadcast: %s\n" @@ -496,6 +497,7 @@ static void socket_dump(Unit *u, FILE *f, const char *prefix) { prefix, s->directory_mode, prefix, yes_no(s->keep_alive), prefix, yes_no(s->no_delay), + prefix, yes_no(s->fast_open), prefix, yes_no(s->free_bind), prefix, yes_no(s->transparent), prefix, yes_no(s->broadcast), @@ -798,6 +800,12 @@ static void socket_apply_socket_options(Socket *s, int fd) { log_warning_unit(UNIT(s)->id, "TCP_NODELAY failed: %m"); } + if (s->fast_open) { + int b = s->fast_open; + if (setsockopt(fd, SOL_TCP, TCP_FASTOPEN, &b, sizeof(b)) < 0) + log_warning_unit(UNIT(s)->id, "TCP_FASTOPEN failed: %m"); + } + if (s->broadcast) { int one = 1; if (setsockopt(fd, SOL_SOCKET, SO_BROADCAST, &one, sizeof(one)) < 0) |