diff options
| -rw-r--r-- | net/core/user_dma.c | 46 |
1 files changed, 22 insertions, 24 deletions
diff --git a/net/core/user_dma.c b/net/core/user_dma.c index 164b090d5ac3..25d717ebc92e 100644 --- a/net/core/user_dma.c +++ b/net/core/user_dma.c @@ -51,6 +51,7 @@ int dma_skb_copy_datagram_iovec(struct dma_chan *chan, { int start = skb_headlen(skb); int i, copy = start - offset; + struct sk_buff *frag_iter; dma_cookie_t cookie = 0; /* Copy header. */ @@ -94,31 +95,28 @@ int dma_skb_copy_datagram_iovec(struct dma_chan *chan, start = end; } - if (skb_shinfo(skb)->frag_list) { - struct sk_buff *list = skb_shinfo(skb)->frag_list; - - for (; list; list = list->next) { - int end; - - WARN_ON(start > offset + len); - - end = start + list->len; - copy = end - offset; - if (copy > 0) { - if (copy > len) - copy = len; - cookie = dma_skb_copy_datagram_iovec(chan, list, - offset - start, to, copy, - pinned_list); - if (cookie < 0) - goto fault; - len -= copy; - if (len == 0) - goto end; - offset += copy; - } - start = end; + skb_walk_frags(skb, frag_iter) { + int end; + + WARN_ON(start > offset + len); + + end = start + frag_iter->len; + copy = end - offset; + if (copy > 0) { + if (copy > len) + copy = len; + cookie = dma_skb_copy_datagram_iovec(chan, frag_iter, + offset - start, + to, copy, + pinned_list); + if (cookie < 0) + goto fault; + len -= copy; + if (len == 0) + goto end; + offset += copy; } + start = end; } end: |