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-rw-r--r--net/batman-adv/fragmentation.c11
1 files changed, 6 insertions, 5 deletions
diff --git a/net/batman-adv/fragmentation.c b/net/batman-adv/fragmentation.c
index 8de1fb567fd7..1f1f5b0873b2 100644
--- a/net/batman-adv/fragmentation.c
+++ b/net/batman-adv/fragmentation.c
@@ -527,13 +527,14 @@ int batadv_frag_send_packet(struct sk_buff *skb,
frag_header.no++;
}
- /* Make room for the fragment header. */
- if (batadv_skb_head_push(skb, header_size) < 0 ||
- pskb_expand_head(skb, header_size + ETH_HLEN, 0, GFP_ATOMIC) < 0) {
- ret = -ENOMEM;
+ /* make sure that there is at least enough head for the fragmentation
+ * and ethernet headers
+ */
+ ret = skb_cow_head(skb, ETH_HLEN + header_size);
+ if (ret < 0)
goto put_primary_if;
- }
+ skb_push(skb, header_size);
memcpy(skb->data, &frag_header, header_size);
/* Send the last fragment */