sctp: Use frag list abstraction interfaces.

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

diff --git a/net/sctp/input.c b/net/sctp/input.c
index d2e9880..c0c973e 100644 (file)
--- a/net/sctp/input.c
+++ b/net/sctp/input.c
@@ -81,13 +81,13 @@ static void sctp_add_backlog(struct sock *sk, struct sk_buff *skb);
 /* Calculate the SCTP checksum of an SCTP packet.  */
 static inline int sctp_rcv_checksum(struct sk_buff *skb)
 {
-       struct sk_buff *list = skb_shinfo(skb)->frag_list;
        struct sctphdr *sh = sctp_hdr(skb);
        __le32 cmp = sh->checksum;
+       struct sk_buff *list;
        __le32 val;
        __u32 tmp = sctp_start_cksum((__u8 *)sh, skb_headlen(skb));
 
-       for (; list; list = list->next)
+       skb_walk_frags(skb, list)
                tmp = sctp_update_cksum((__u8 *)list->data, skb_headlen(list),
                                        tmp);
 

diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index 7c3dfd2..0f01e5d 100644 (file)
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -1881,7 +1881,7 @@ static int sctp_skb_pull(struct sk_buff *skb, int len)
        len -= skb_len;
        __skb_pull(skb, skb_len);
 
-       for (list = skb_shinfo(skb)->frag_list; list; list = list->next) {
+       skb_walk_frags(skb, list) {
                rlen = sctp_skb_pull(list, len);
                skb->len -= (len-rlen);
                skb->data_len -= (len-rlen);
@@ -6660,7 +6660,7 @@ static void sctp_sock_rfree_frag(struct sk_buff *skb)
                goto done;
 
        /* Don't forget the fragments. */
-       for (frag = skb_shinfo(skb)->frag_list; frag; frag = frag->next)
+       skb_walk_frags(skb, frag)
                sctp_sock_rfree_frag(frag);
 
 done:
@@ -6675,7 +6675,7 @@ static void sctp_skb_set_owner_r_frag(struct sk_buff *skb, struct sock *sk)
                goto done;
 
        /* Don't forget the fragments. */
-       for (frag = skb_shinfo(skb)->frag_list; frag; frag = frag->next)
+       skb_walk_frags(skb, frag)
                sctp_skb_set_owner_r_frag(frag, sk);
 
 done:

diff --git a/net/sctp/ulpevent.c b/net/sctp/ulpevent.c
index 5f186ca..8b3560f 100644 (file)
--- a/net/sctp/ulpevent.c
+++ b/net/sctp/ulpevent.c
@@ -976,9 +976,8 @@ static void sctp_ulpevent_receive_data(struct sctp_ulpevent *event,
         * In general, the skb passed from IP can have only 1 level of
         * fragments. But we allow multiple levels of fragments.
         */
-       for (frag = skb_shinfo(skb)->frag_list; frag; frag = frag->next) {
+       skb_walk_frags(skb, frag)
                sctp_ulpevent_receive_data(sctp_skb2event(frag), asoc);
-       }
 }
 
 /* Do accounting for bytes just read by user and release the references to
@@ -1003,7 +1002,7 @@ static void sctp_ulpevent_release_data(struct sctp_ulpevent *event)
                goto done;
 
        /* Don't forget the fragments. */
-       for (frag = skb_shinfo(skb)->frag_list; frag; frag = frag->next) {
+       skb_walk_frags(skb, frag) {
                /* NOTE:  skb_shinfos are recursive. Although IP returns
                 * skb's with only 1 level of fragments, SCTP reassembly can
                 * increase the levels.
@@ -1026,7 +1025,7 @@ static void sctp_ulpevent_release_frag_data(struct sctp_ulpevent *event)
                goto done;
 
        /* Don't forget the fragments. */
-       for (frag = skb_shinfo(skb)->frag_list; frag; frag = frag->next) {
+       skb_walk_frags(skb, frag) {
                /* NOTE:  skb_shinfos are recursive. Although IP returns
                 * skb's with only 1 level of fragments, SCTP reassembly can
                 * increase the levels.