decnet: Use SKB queue and list helpers instead of doing it by-hand.

Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/decnet/af_decnet.c b/net/decnet/af_decnet.c
index 9647d91..bccb388 100644 (file)
--- a/net/decnet/af_decnet.c
+++ b/net/decnet/af_decnet.c
@@ -1250,14 +1250,8 @@ static int dn_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
                if (skb) {
                        amount = skb->len;
                } else {
-                       skb = sk->sk_receive_queue.next;
-                       for (;;) {
-                               if (skb ==
-                                   (struct sk_buff *)&sk->sk_receive_queue)
-                                       break;
+                       skb_queue_walk(&sk->sk_receive_queue, skb)
                                amount += skb->len;
-                               skb = skb->next;
-                       }
                }
                release_sock(sk);
                err = put_user(amount, (int __user *)arg);
@@ -1644,13 +1638,13 @@ static int __dn_getsockopt(struct socket *sock, int level,int optname, char __us
 
 static int dn_data_ready(struct sock *sk, struct sk_buff_head *q, int flags, int target)
 {
-       struct sk_buff *skb = q->next;
+       struct sk_buff *skb;
        int len = 0;
 
        if (flags & MSG_OOB)
                return !skb_queue_empty(q) ? 1 : 0;
 
-       while(skb != (struct sk_buff *)q) {
+       skb_queue_walk(q, skb) {
                struct dn_skb_cb *cb = DN_SKB_CB(skb);
                len += skb->len;
 
@@ -1666,8 +1660,6 @@ static int dn_data_ready(struct sock *sk, struct sk_buff_head *q, int flags, int
                /* minimum data length for read exceeded */
                if (len >= target)
                        return 1;
-
-               skb = skb->next;
        }
 
        return 0;
@@ -1683,7 +1675,7 @@ static int dn_recvmsg(struct kiocb *iocb, struct socket *sock,
        size_t target = size > 1 ? 1 : 0;
        size_t copied = 0;
        int rv = 0;
-       struct sk_buff *skb, *nskb;
+       struct sk_buff *skb, *n;
        struct dn_skb_cb *cb = NULL;
        unsigned char eor = 0;
        long timeo = sock_rcvtimeo(sk, flags & MSG_DONTWAIT);
@@ -1758,7 +1750,7 @@ static int dn_recvmsg(struct kiocb *iocb, struct socket *sock,
                finish_wait(sk->sk_sleep, &wait);
        }
 
-       for(skb = queue->next; skb != (struct sk_buff *)queue; skb = nskb) {
+       skb_queue_walk_safe(queue, skb, n) {
                unsigned int chunk = skb->len;
                cb = DN_SKB_CB(skb);
 
@@ -1775,7 +1767,6 @@ static int dn_recvmsg(struct kiocb *iocb, struct socket *sock,
                        skb_pull(skb, chunk);
 
                eor = cb->nsp_flags & 0x40;
-               nskb = skb->next;
 
                if (skb->len == 0) {
                        skb_unlink(skb, queue);

diff --git a/net/decnet/dn_nsp_out.c b/net/decnet/dn_nsp_out.c
index 2013c25..da04f45 100644 (file)
--- a/net/decnet/dn_nsp_out.c
+++ b/net/decnet/dn_nsp_out.c
@@ -382,7 +382,7 @@ int dn_nsp_check_xmit_queue(struct sock *sk, struct sk_buff *skb, struct sk_buff
 {
        struct dn_skb_cb *cb = DN_SKB_CB(skb);
        struct dn_scp *scp = DN_SK(sk);
-       struct sk_buff *skb2, *list, *ack = NULL;
+       struct sk_buff *skb2, *n, *ack = NULL;
        int wakeup = 0;
        int try_retrans = 0;
        unsigned long reftime = cb->stamp;
@@ -390,9 +390,7 @@ int dn_nsp_check_xmit_queue(struct sock *sk, struct sk_buff *skb, struct sk_buff
        unsigned short xmit_count;
        unsigned short segnum;
 
-       skb2 = q->next;
-       list = (struct sk_buff *)q;
-       while(list != skb2) {
+       skb_queue_walk_safe(q, skb2, n) {
                struct dn_skb_cb *cb2 = DN_SKB_CB(skb2);
 
                if (dn_before_or_equal(cb2->segnum, acknum))
@@ -400,8 +398,6 @@ int dn_nsp_check_xmit_queue(struct sock *sk, struct sk_buff *skb, struct sk_buff
 
                /* printk(KERN_DEBUG "ack: %s %04x %04x\n", ack ? "ACK" : "SKIP", (int)cb2->segnum, (int)acknum); */
 
-               skb2 = skb2->next;
-
                if (ack == NULL)
                        continue;