net: sysctl_net_core: check SNDBUF and RCVBUF for min length

[cascardo/linux.git] / net / core / sysctl_net_core.c

diff --git a/net/core/sysctl_net_core.c b/net/core/sysctl_net_core.c
index 4334248..8ce351f 100644 (file)
--- a/net/core/sysctl_net_core.c
+++ b/net/core/sysctl_net_core.c
@@ -25,6 +25,8 @@
 static int zero = 0;
 static int one = 1;
 static int ushort_max = USHRT_MAX;
+static int min_sndbuf = SOCK_MIN_SNDBUF;
+static int min_rcvbuf = SOCK_MIN_RCVBUF;
 
 static int net_msg_warn;       /* Unused, but still a sysctl */
 
@@ -237,7 +239,7 @@ static struct ctl_table net_core_table[] = {
                .maxlen         = sizeof(int),
                .mode           = 0644,
                .proc_handler   = proc_dointvec_minmax,
-               .extra1         = &one,
+               .extra1         = &min_sndbuf,
        },
        {
                .procname       = "rmem_max",
@@ -245,7 +247,7 @@ static struct ctl_table net_core_table[] = {
                .maxlen         = sizeof(int),
                .mode           = 0644,
                .proc_handler   = proc_dointvec_minmax,
-               .extra1         = &one,
+               .extra1         = &min_rcvbuf,
        },
        {
                .procname       = "wmem_default",
@@ -253,7 +255,7 @@ static struct ctl_table net_core_table[] = {
                .maxlen         = sizeof(int),
                .mode           = 0644,
                .proc_handler   = proc_dointvec_minmax,
-               .extra1         = &one,
+               .extra1         = &min_sndbuf,
        },
        {
                .procname       = "rmem_default",
@@ -261,7 +263,7 @@ static struct ctl_table net_core_table[] = {
                .maxlen         = sizeof(int),
                .mode           = 0644,
                .proc_handler   = proc_dointvec_minmax,
-               .extra1         = &one,
+               .extra1         = &min_rcvbuf,
        },
        {
                .procname       = "dev_weight",