diff options
Diffstat (limited to 'net/ipv4')
| -rw-r--r-- | net/ipv4/af_inet.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c index f011390f19c..b7b7278d801 100644 --- a/net/ipv4/af_inet.c +++ b/net/ipv4/af_inet.c @@ -87,6 +87,7 @@ #include <linux/init.h> #include <linux/poll.h> #include <linux/netfilter_ipv4.h> +#include <linux/random.h> #include <asm/uaccess.h> #include <asm/system.h> @@ -217,6 +218,16 @@ out: return err; } +u32 inet_ehash_secret; +EXPORT_SYMBOL(inet_ehash_secret); + +void build_ehash_secret(void) +{ + while (!inet_ehash_secret) + get_random_bytes(&inet_ehash_secret, 4); +} +EXPORT_SYMBOL(build_ehash_secret); + /* * Create an inet socket. */ @@ -233,6 +244,11 @@ static int inet_create(struct socket *sock, int protocol) int try_loading_module = 0; int err; + if (sock->type != SOCK_RAW && + sock->type != SOCK_DGRAM && + !inet_ehash_secret) + build_ehash_secret(); + sock->state = SS_UNCONNECTED; /* Look for the requested type/protocol pair. */ |