diff options
| -rw-r--r-- | drivers/net/xen-netfront.c | 31 |
1 files changed, 13 insertions, 18 deletions
diff --git a/drivers/net/xen-netfront.c b/drivers/net/xen-netfront.c index ff7f111fffee..36808bf25677 100644 --- a/drivers/net/xen-netfront.c +++ b/drivers/net/xen-netfront.c @@ -286,8 +286,7 @@ no_skb: break; } - __skb_fill_page_desc(skb, 0, page, 0, 0); - skb_shinfo(skb)->nr_frags = 1; + skb_add_rx_frag(skb, 0, page, 0, 0, PAGE_SIZE); __skb_queue_tail(&np->rx_batch, skb); } @@ -831,7 +830,6 @@ static RING_IDX xennet_fill_frags(struct netfront_info *np, struct sk_buff_head *list) { struct skb_shared_info *shinfo = skb_shinfo(skb); - int nr_frags = shinfo->nr_frags; RING_IDX cons = np->rx.rsp_cons; struct sk_buff *nskb; @@ -840,19 +838,21 @@ static RING_IDX xennet_fill_frags(struct netfront_info *np, RING_GET_RESPONSE(&np->rx, ++cons); skb_frag_t *nfrag = &skb_shinfo(nskb)->frags[0]; - __skb_fill_page_desc(skb, nr_frags, - skb_frag_page(nfrag), - rx->offset, rx->status); + if (shinfo->nr_frags == MAX_SKB_FRAGS) { + unsigned int pull_to = NETFRONT_SKB_CB(skb)->pull_to; - skb->data_len += rx->status; + BUG_ON(pull_to <= skb_headlen(skb)); + __pskb_pull_tail(skb, pull_to - skb_headlen(skb)); + } + BUG_ON(shinfo->nr_frags >= MAX_SKB_FRAGS); + + skb_add_rx_frag(skb, shinfo->nr_frags, skb_frag_page(nfrag), + rx->offset, rx->status, PAGE_SIZE); skb_shinfo(nskb)->nr_frags = 0; kfree_skb(nskb); - - nr_frags++; } - shinfo->nr_frags = nr_frags; return cons; } @@ -933,7 +933,8 @@ static int handle_incoming_queue(struct net_device *dev, while ((skb = __skb_dequeue(rxq)) != NULL) { int pull_to = NETFRONT_SKB_CB(skb)->pull_to; - __pskb_pull_tail(skb, pull_to - skb_headlen(skb)); + if (pull_to > skb_headlen(skb)) + __pskb_pull_tail(skb, pull_to - skb_headlen(skb)); /* Ethernet work: Delayed to here as it peeks the header. */ skb->protocol = eth_type_trans(skb, dev); @@ -1019,16 +1020,10 @@ err: skb_shinfo(skb)->frags[0].page_offset = rx->offset; skb_frag_size_set(&skb_shinfo(skb)->frags[0], rx->status); skb->data_len = rx->status; + skb->len += rx->status; i = xennet_fill_frags(np, skb, &tmpq); - /* - * Truesize is the actual allocation size, even if the - * allocation is only partially used. - */ - skb->truesize += PAGE_SIZE * skb_shinfo(skb)->nr_frags; - skb->len += skb->data_len; - if (rx->flags & XEN_NETRXF_csum_blank) skb->ip_summed = CHECKSUM_PARTIAL; else if (rx->flags & XEN_NETRXF_data_validated) |