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Diffstat (limited to 'net/core/skbuff.c')
-rw-r--r--net/core/skbuff.c20
1 files changed, 15 insertions, 5 deletions
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 35c1e2460206..58604c1889bd 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -3082,22 +3082,32 @@ struct sk_buff *skb_segment(struct sk_buff *head_skb,
if (sg && csum && (mss != GSO_BY_FRAGS)) {
if (!(features & NETIF_F_GSO_PARTIAL)) {
struct sk_buff *iter;
+ unsigned int frag_len;
if (!list_skb ||
!net_gso_ok(features, skb_shinfo(head_skb)->gso_type))
goto normal;
- /* Split the buffer at the frag_list pointer.
- * This is based on the assumption that all
- * buffers in the chain excluding the last
- * containing the same amount of data.
+ /* If we get here then all the required
+ * GSO features except frag_list are supported.
+ * Try to split the SKB to multiple GSO SKBs
+ * with no frag_list.
+ * Currently we can do that only when the buffers don't
+ * have a linear part and all the buffers except
+ * the last are of the same length.
*/
+ frag_len = list_skb->len;
skb_walk_frags(head_skb, iter) {
- if (skb_headlen(iter))
+ if (frag_len != iter->len && iter->next)
+ goto normal;
+ if (skb_headlen(iter) && !iter->head_frag)
goto normal;
len -= iter->len;
}
+
+ if (len != frag_len)
+ goto normal;
}
/* GSO partial only requires that we trim off any excess that