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authorSteve French <sfrench@us.ibm.com>2009-12-31 20:28:43 -0500
committerSteve French <sfrench@us.ibm.com>2009-12-31 20:28:43 -0500
commit6a5fa2362b628ee950080bef8895a6fb62f58ab4 (patch)
tree6c756adf9c571529a7ace4e9da807b85e7b1c985 /fs/cifs/connect.c
parentdf9d1e8a4379119cbc47c474f168b5103e404e17 (diff)
[CIFS] Add support for TCP_NODELAY
mount option sockopt=TCP_NODELAY helpful for faster networks boosting performance. Kernel bugzilla bug number 14032. Signed-off-by: Steve French <sfrench@us.ibm.com>
Diffstat (limited to 'fs/cifs/connect.c')
-rw-r--r--fs/cifs/connect.c30
1 files changed, 26 insertions, 4 deletions
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 3bbcaa716b3c..2e9e09ca0e30 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -98,7 +98,7 @@ struct smb_vol {
98 bool nostrictsync:1; /* do not force expensive SMBflush on every sync */ 98 bool nostrictsync:1; /* do not force expensive SMBflush on every sync */
99 unsigned int rsize; 99 unsigned int rsize;
100 unsigned int wsize; 100 unsigned int wsize;
101 unsigned int sockopt; 101 bool sockopt_tcp_nodelay:1;
102 unsigned short int port; 102 unsigned short int port;
103 char *prepath; 103 char *prepath;
104}; 104};
@@ -1142,9 +1142,11 @@ cifs_parse_mount_options(char *options, const char *devname,
1142 simple_strtoul(value, &value, 0); 1142 simple_strtoul(value, &value, 0);
1143 } 1143 }
1144 } else if (strnicmp(data, "sockopt", 5) == 0) { 1144 } else if (strnicmp(data, "sockopt", 5) == 0) {
1145 if (value && *value) { 1145 if (!value || !*value) {
1146 vol->sockopt = 1146 cERROR(1, ("no socket option specified"));
1147 simple_strtoul(value, &value, 0); 1147 continue;
1148 } else if (strnicmp(value, "TCP_NODELAY", 11) == 0) {
1149 vol->sockopt_tcp_nodelay = 1;
1148 } 1150 }
1149 } else if (strnicmp(data, "netbiosname", 4) == 0) { 1151 } else if (strnicmp(data, "netbiosname", 4) == 0) {
1150 if (!value || !*value || (*value == ' ')) { 1152 if (!value || !*value || (*value == ' ')) {
@@ -1514,6 +1516,7 @@ cifs_get_tcp_session(struct smb_vol *volume_info)
1514 1516
1515 tcp_ses->noblocksnd = volume_info->noblocksnd; 1517 tcp_ses->noblocksnd = volume_info->noblocksnd;
1516 tcp_ses->noautotune = volume_info->noautotune; 1518 tcp_ses->noautotune = volume_info->noautotune;
1519 tcp_ses->tcp_nodelay = volume_info->sockopt_tcp_nodelay;
1517 atomic_set(&tcp_ses->inFlight, 0); 1520 atomic_set(&tcp_ses->inFlight, 0);
1518 init_waitqueue_head(&tcp_ses->response_q); 1521 init_waitqueue_head(&tcp_ses->response_q);
1519 init_waitqueue_head(&tcp_ses->request_q); 1522 init_waitqueue_head(&tcp_ses->request_q);
@@ -1764,6 +1767,7 @@ static int
1764ipv4_connect(struct TCP_Server_Info *server) 1767ipv4_connect(struct TCP_Server_Info *server)
1765{ 1768{
1766 int rc = 0; 1769 int rc = 0;
1770 int val;
1767 bool connected = false; 1771 bool connected = false;
1768 __be16 orig_port = 0; 1772 __be16 orig_port = 0;
1769 struct socket *socket = server->ssocket; 1773 struct socket *socket = server->ssocket;
@@ -1845,6 +1849,14 @@ ipv4_connect(struct TCP_Server_Info *server)
1845 socket->sk->sk_rcvbuf = 140 * 1024; 1849 socket->sk->sk_rcvbuf = 140 * 1024;
1846 } 1850 }
1847 1851
1852 if (server->tcp_nodelay) {
1853 val = 1;
1854 rc = kernel_setsockopt(socket, SOL_TCP, TCP_NODELAY,
1855 (char *)&val, sizeof(val));
1856 if (rc)
1857 cFYI(1, ("set TCP_NODELAY socket option error %d", rc));
1858 }
1859
1848 cFYI(1, ("sndbuf %d rcvbuf %d rcvtimeo 0x%lx", 1860 cFYI(1, ("sndbuf %d rcvbuf %d rcvtimeo 0x%lx",
1849 socket->sk->sk_sndbuf, 1861 socket->sk->sk_sndbuf,
1850 socket->sk->sk_rcvbuf, socket->sk->sk_rcvtimeo)); 1862 socket->sk->sk_rcvbuf, socket->sk->sk_rcvtimeo));
@@ -1916,6 +1928,7 @@ static int
1916ipv6_connect(struct TCP_Server_Info *server) 1928ipv6_connect(struct TCP_Server_Info *server)
1917{ 1929{
1918 int rc = 0; 1930 int rc = 0;
1931 int val;
1919 bool connected = false; 1932 bool connected = false;
1920 __be16 orig_port = 0; 1933 __be16 orig_port = 0;
1921 struct socket *socket = server->ssocket; 1934 struct socket *socket = server->ssocket;
@@ -1987,6 +2000,15 @@ ipv6_connect(struct TCP_Server_Info *server)
1987 */ 2000 */
1988 socket->sk->sk_rcvtimeo = 7 * HZ; 2001 socket->sk->sk_rcvtimeo = 7 * HZ;
1989 socket->sk->sk_sndtimeo = 5 * HZ; 2002 socket->sk->sk_sndtimeo = 5 * HZ;
2003
2004 if (server->tcp_nodelay) {
2005 val = 1;
2006 rc = kernel_setsockopt(socket, SOL_TCP, TCP_NODELAY,
2007 (char *)&val, sizeof(val));
2008 if (rc)
2009 cFYI(1, ("set TCP_NODELAY socket option error %d", rc));
2010 }
2011
1990 server->ssocket = socket; 2012 server->ssocket = socket;
1991 2013
1992 return rc; 2014 return rc;