Messages in this thread Patch in this message | | | Subject | Re: [PATCH net-next v3 6/9] xen-netback: Handle guests with too many frags | From | Eric Dumazet <> | Date | Tue, 07 Jan 2014 18:12:21 -0800 |
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On Wed, 2014-01-08 at 00:10 +0000, Zoltan Kiss wrote:
> > + if (skb_shinfo(skb)->frag_list) { > + nskb = skb_shinfo(skb)->frag_list; > + xenvif_fill_frags(vif, nskb, INVALID_PENDING_IDX); > + skb->len += nskb->len; > + skb->data_len += nskb->len; > + skb->truesize += nskb->truesize; > + skb_shinfo(skb)->tx_flags |= SKBTX_DEV_ZEROCOPY; > + skb_shinfo(nskb)->tx_flags |= SKBTX_DEV_ZEROCOPY; > + vif->tx_zerocopy_sent += 2; > + nskb = skb; > + > + skb = skb_copy_expand(skb, > + 0, > + 0, > + GFP_ATOMIC | __GFP_NOWARN);
skb can be NULL here
> + skb_shinfo(skb)->destructor_arg = NULL; > + } > if (skb_is_nonlinear(skb) && skb_headlen(skb) < PKT_PROT_LEN) { > int target = min_t(int, skb->len, PKT_PROT_LEN); > __pskb_pull_tail(skb, target - skb_headlen(skb)); > @@ -1568,6 +1660,9 @@ static int xenvif_tx_submit(struct xenvif *vif) > } >
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