net: avoid to hang up on sending due to sysctl configuration overflow.

[pandora-kernel.git] / net / ipv4 / sysctl_net_ipv4.c

diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c
index 739b073..253dd80 100644 (file)
--- a/net/ipv4/sysctl_net_ipv4.c
+++ b/net/ipv4/sysctl_net_ipv4.c
@@ -24,7 +24,7 @@
 #include <net/inet_frag.h>
 #include <net/ping.h>
 
-static int zero;
+static int one = 1;
 static int tcp_retr1_max = 255;
 static int ip_local_port_range_min[] = { 1, 1 };
 static int ip_local_port_range_max[] = { 65535, 65535 };
@@ -448,14 +448,16 @@ static struct ctl_table ipv4_table[] = {
                .data           = &sysctl_tcp_wmem,
                .maxlen         = sizeof(sysctl_tcp_wmem),
                .mode           = 0644,
-               .proc_handler   = proc_dointvec
+               .proc_handler   = proc_dointvec_minmax,
+               .extra1         = &one,
        },
        {
                .procname       = "tcp_rmem",
                .data           = &sysctl_tcp_rmem,
                .maxlen         = sizeof(sysctl_tcp_rmem),
                .mode           = 0644,
-               .proc_handler   = proc_dointvec
+               .proc_handler   = proc_dointvec_minmax,
+               .extra1         = &one,
        },
        {
                .procname       = "tcp_app_win",
@@ -662,7 +664,7 @@ static struct ctl_table ipv4_table[] = {
                .maxlen         = sizeof(sysctl_udp_rmem_min),
                .mode           = 0644,
                .proc_handler   = proc_dointvec_minmax,
-               .extra1         = &zero
+               .extra1         = &one
        },
        {
                .procname       = "udp_wmem_min",
@@ -670,7 +672,7 @@ static struct ctl_table ipv4_table[] = {
                .maxlen         = sizeof(sysctl_udp_wmem_min),
                .mode           = 0644,
                .proc_handler   = proc_dointvec_minmax,
-               .extra1         = &zero
+               .extra1         = &one
        },
        { }
 };