sock_diag: Introduce new message type
This type will run the family+protocol based socket dumping.
Also prepare the stub function for it.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/inet_diag.h b/include/linux/inet_diag.h
index abf5028..f7baaf6 100644
--- a/include/linux/inet_diag.h
+++ b/include/linux/inet_diag.h
@@ -6,6 +6,7 @@
/* Just some random number */
#define TCPDIAG_GETSOCK 18
#define DCCPDIAG_GETSOCK 19
+#define SOCK_DIAG_BY_FAMILY 20
#define INET_DIAG_GETSOCK_MAX 24
diff --git a/net/ipv4/inet_diag.c b/net/ipv4/inet_diag.c
index a5f3c40..eb6bdfa 100644
--- a/net/ipv4/inet_diag.c
+++ b/net/ipv4/inet_diag.c
@@ -850,7 +850,7 @@
return skb->len;
}
-static int inet_diag_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
+static int inet_diag_rcv_msg_compat(struct sk_buff *skb, struct nlmsghdr *nlh)
{
int hdrlen = sizeof(struct inet_diag_req);
@@ -877,9 +877,22 @@
return inet_diag_get_exact(skb, nlh);
}
+static int __sock_diag_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
+{
+ return -EOPNOTSUPP;
+}
+
static int sock_diag_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
{
- return inet_diag_rcv_msg(skb, nlh);
+ switch (nlh->nlmsg_type) {
+ case TCPDIAG_GETSOCK:
+ case DCCPDIAG_GETSOCK:
+ return inet_diag_rcv_msg_compat(skb, nlh);
+ case SOCK_DIAG_BY_FAMILY:
+ return __sock_diag_rcv_msg(skb, nlh);
+ default:
+ return -EINVAL;
+ }
}
static DEFINE_MUTEX(sock_diag_mutex);