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Commit 476f7dbf authored by Pavel Emelyanov's avatar Pavel Emelyanov Committed by David S. Miller
Browse files

inet_diag: Split inet_diag_get_exact into parts 



The 1st part locks the inet handler and the 2nd one dump the
inet connection sock.

In the next patches the 1st part will be generalized to call
the socket dumping routine indirectly (i.e. TCP/UDP/DCCP) and
the 2nd part will be used by TCP and DCCP handlers.

Signed-off-by: default avatarPavel Emelyanov <xemul@parallels.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent b005ab4e

net/ipv4/inet_diag.c

+22 −16
Original line number Diff line number Diff line
@@ -258,25 +258,14 @@ int inet_diag_check_cookie(struct sock *sk, struct inet_diag_req *req) 
}

EXPORT_SYMBOL_GPL(inet_diag_check_cookie);



static int inet_diag_get_exact(struct sk_buff *in_skb,

			       const struct nlmsghdr *nlh,

			       struct inet_diag_req *req)

static 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;

	struct sock *sk;

	struct sk_buff *rep;

	struct inet_hashinfo *hashinfo;

	const struct inet_diag_handler *handler;



	handler = inet_diag_lock_handler(req->sdiag_protocol);

	if (IS_ERR(handler)) {

		err = PTR_ERR(handler);

		goto unlock;

	}



	hashinfo = handler->idiag_hashinfo;

	err = -EINVAL;



	if (req->sdiag_family == AF_INET) {

		sk = inet_lookup(&init_net, hashinfo, req->id.idiag_dst[0],

				 req->id.idiag_dport, req->id.idiag_src[0],
@@ -293,12 +282,12 @@ static int inet_diag_get_exact(struct sk_buff *in_skb, 
	}

#endif

	else {

		goto unlock;

		goto out_nosk;

	}



	err = -ENOENT;

	if (sk == NULL)

		goto unlock;

		goto out_nosk;



	err = inet_diag_check_cookie(sk, req);

	if (err)
@@ -332,8 +321,25 @@ out: 
		else

			sock_put(sk);

	}

unlock:

out_nosk:

	return err;

}



static int inet_diag_get_exact(struct sk_buff *in_skb,

			       const struct nlmsghdr *nlh,

			       struct inet_diag_req *req)

{

	const struct inet_diag_handler *handler;

	int err;



	handler = inet_diag_lock_handler(req->sdiag_protocol);

	if (IS_ERR(handler))

		err = PTR_ERR(handler);

	else

		err = inet_diag_dump_one_icsk(handler->idiag_hashinfo,

				in_skb, nlh, req);

	inet_diag_unlock_handler(handler);



	return err;

}