[XFRM]: Use generic netlink receive queue processor

Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c
index 6996b7e..0cdd9a0 100644 (file)
--- a/net/xfrm/xfrm_user.c
+++ b/net/xfrm/xfrm_user.c
@@ -18,7 +18,6 @@
 #include <linux/string.h>
 #include <linux/net.h>
 #include <linux/skbuff.h>
-#include <linux/netlink.h>
 #include <linux/rtnetlink.h>
 #include <linux/pfkeyv2.h>
 #include <linux/ipsec.h>
@@ -26,6 +25,7 @@
 #include <linux/security.h>
 #include <net/sock.h>
 #include <net/xfrm.h>
+#include <net/netlink.h>
 #include <asm/uaccess.h>
 
 static struct sock *xfrm_nl;
@@ -979,8 +979,6 @@ static int xfrm_user_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh, int *err
        if ((type == (XFRM_MSG_GETSA - XFRM_MSG_BASE) ||
             type == (XFRM_MSG_GETPOLICY - XFRM_MSG_BASE)) &&
            (nlh->nlmsg_flags & NLM_F_DUMP)) {
-               u32 rlen;
-
                if (link->dump == NULL)
                        goto err_einval;
 
@@ -988,10 +986,8 @@ static int xfrm_user_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh, int *err
                                                link->dump, NULL)) != 0) {
                        return -1;
                }
-               rlen = NLMSG_ALIGN(nlh->nlmsg_len);
-               if (rlen > skb->len)
-                       rlen = skb->len;
-               skb_pull(skb, rlen);
+
+               netlink_queue_skip(nlh, skb);
                return -1;
        }
 
@@ -1026,60 +1022,13 @@ err_einval:
        return -1;
 }
 
-static int xfrm_user_rcv_skb(struct sk_buff *skb)
-{
-       int err;
-       struct nlmsghdr *nlh;
-
-       while (skb->len >= NLMSG_SPACE(0)) {
-               u32 rlen;
-
-               nlh = (struct nlmsghdr *) skb->data;
-               if (nlh->nlmsg_len < sizeof(*nlh) ||
-                   skb->len < nlh->nlmsg_len)
-                       return 0;
-               rlen = NLMSG_ALIGN(nlh->nlmsg_len);
-               if (rlen > skb->len)
-                       rlen = skb->len;
-               if (xfrm_user_rcv_msg(skb, nlh, &err) < 0) {
-                       if (err == 0)
-                               return -1;
-                       netlink_ack(skb, nlh, err);
-               } else if (nlh->nlmsg_flags & NLM_F_ACK)
-                       netlink_ack(skb, nlh, 0);
-               skb_pull(skb, rlen);
-       }
-
-       return 0;
-}
-
 static void xfrm_netlink_rcv(struct sock *sk, int len)
 {
-       unsigned int qlen = skb_queue_len(&sk->sk_receive_queue);
+       unsigned int qlen = 0;
 
        do {
-               struct sk_buff *skb;
-
                down(&xfrm_cfg_sem);
-
-               if (qlen > skb_queue_len(&sk->sk_receive_queue))
-                       qlen = skb_queue_len(&sk->sk_receive_queue);
-
-               for (; qlen; qlen--) {
-                       skb = skb_dequeue(&sk->sk_receive_queue);
-                       if (xfrm_user_rcv_skb(skb)) {
-                               if (skb->len)
-                                       skb_queue_head(&sk->sk_receive_queue,
-                                                      skb);
-                               else {
-                                       kfree_skb(skb);
-                                       qlen--;
-                               }
-                               break;
-                       }
-                       kfree_skb(skb);
-               }
-
+               netlink_run_queue(sk, &qlen, &xfrm_user_rcv_msg);
                up(&xfrm_cfg_sem);
 
        } while (qlen);