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authorNeil Horman <nhorman@tuxdriver.com>2007-08-15 16:07:44 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2007-10-10 16:48:09 -0700
commit4d93df0abd50b9c9e2d4561439a1a1d21ec5e68f (patch)
tree47e5bde0c37ed7ce68032ffa9110f252533fc710 /net/sctp/sysctl.c
parent[ETHTOOL]: Internal cleanup of ethtool_value-related handlers (diff)
downloadlinux-dev-4d93df0abd50b9c9e2d4561439a1a1d21ec5e68f.tar.xz
linux-dev-4d93df0abd50b9c9e2d4561439a1a1d21ec5e68f.zip
[SCTP]: Rewrite of sctp buffer management code
This patch introduces autotuning to the sctp buffer management code similar to the TCP. The buffer space can be grown if the advertised receive window still has room. This might happen if small message sizes are used, which is common in telecom environmens. New tunables are introduced that provide limits to buffer growth and memory pressure is entered if to much buffer spaces is used. Signed-off-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sctp/sysctl.c')
-rw-r--r--net/sctp/sysctl.c33
1 files changed, 33 insertions, 0 deletions
diff --git a/net/sctp/sysctl.c b/net/sctp/sysctl.c
index e2c679baf912..ba75ef4669e3 100644
--- a/net/sctp/sysctl.c
+++ b/net/sctp/sysctl.c
@@ -52,6 +52,15 @@ static int int_max = INT_MAX;
static long sack_timer_min = 1;
static long sack_timer_max = 500;
+int sysctl_sctp_mem[3];
+int sysctl_sctp_rmem[3];
+int sysctl_sctp_wmem[3];
+
+/*
+ * per assoc memory limitationf for sends
+ */
+int sysctl_sctp_wmem[3];
+
static ctl_table sctp_table[] = {
{
.ctl_name = NET_SCTP_RTO_INITIAL,
@@ -226,6 +235,30 @@ static ctl_table sctp_table[] = {
.extra1 = &sack_timer_min,
.extra2 = &sack_timer_max,
},
+ {
+ .ctl_name = CTL_UNNUMBERED,
+ .procname = "sctp_mem",
+ .data = &sysctl_sctp_mem,
+ .maxlen = sizeof(sysctl_sctp_mem),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec,
+ },
+ {
+ .ctl_name = CTL_UNNUMBERED,
+ .procname = "sctp_rmem",
+ .data = &sysctl_sctp_rmem,
+ .maxlen = sizeof(sysctl_sctp_rmem),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec,
+ },
+ {
+ .ctl_name = CTL_UNNUMBERED,
+ .procname = "sctp_wmem",
+ .data = &sysctl_sctp_wmem,
+ .maxlen = sizeof(sysctl_sctp_wmem),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec,
+ },
{ .ctl_name = 0 }
};