inet_diag: Generalize inet_diag dump and get_exact calls
Introduce two callbacks in inet_diag_handler -- one for dumping all
sockets (with filters) and the other one for dumping a single sk.
Replace direct calls to icsk handlers with indirect calls to callbacks
provided by handlers.
Make existing TCP and DCCP handlers use provided helpers for icsk-s.
The UDP diag module will provide its own.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/inet_diag.c b/net/ipv4/inet_diag.c
index dc8611e..9b3e0b1 100644
--- a/net/ipv4/inet_diag.c
+++ b/net/ipv4/inet_diag.c
@@ -273,7 +273,7 @@
}
EXPORT_SYMBOL_GPL(inet_diag_check_cookie);
-static int inet_diag_dump_one_icsk(struct inet_hashinfo *hashinfo, struct sk_buff *in_skb,
+int inet_diag_dump_one_icsk(struct inet_hashinfo *hashinfo, struct sk_buff *in_skb,
const struct nlmsghdr *nlh, struct inet_diag_req *req)
{
int err;
@@ -339,6 +339,7 @@
out_nosk:
return err;
}
+EXPORT_SYMBOL_GPL(inet_diag_dump_one_icsk);
static int inet_diag_get_exact(struct sk_buff *in_skb,
const struct nlmsghdr *nlh,
@@ -351,8 +352,7 @@
if (IS_ERR(handler))
err = PTR_ERR(handler);
else
- err = inet_diag_dump_one_icsk(handler->idiag_hashinfo,
- in_skb, nlh, req);
+ err = handler->dump_one(in_skb, nlh, req);
inet_diag_unlock_handler(handler);
return err;
@@ -731,7 +731,7 @@
return err;
}
-static void inet_diag_dump_icsk(struct inet_hashinfo *hashinfo, struct sk_buff *skb,
+void inet_diag_dump_icsk(struct inet_hashinfo *hashinfo, struct sk_buff *skb,
struct netlink_callback *cb, struct inet_diag_req *r, struct nlattr *bc)
{
int i, num;
@@ -880,6 +880,7 @@
out:
;
}
+EXPORT_SYMBOL_GPL(inet_diag_dump_icsk);
static int __inet_diag_dump(struct sk_buff *skb, struct netlink_callback *cb,
struct inet_diag_req *r, struct nlattr *bc)
@@ -888,7 +889,7 @@
handler = inet_diag_lock_handler(r->sdiag_protocol);
if (!IS_ERR(handler))
- inet_diag_dump_icsk(handler->idiag_hashinfo, skb, cb, r, bc);
+ handler->dump(skb, cb, r, bc);
inet_diag_unlock_handler(handler);
return skb->len;