udph->len = htons(skb->len - skb_transport_offset(skb));
}
-static int handle_offloads(struct sk_buff *skb)
+static struct sk_buff *handle_offloads(struct sk_buff *skb)
{
- if (skb_is_gso(skb)) {
- if (skb_is_encapsulated(skb))
- return -ENOSYS;
-
- OVS_GSO_CB(skb)->fix_segment = lisp_fix_segment;
- } else if (skb->ip_summed != CHECKSUM_PARTIAL) {
- skb->ip_summed = CHECKSUM_NONE;
- }
- return 0;
+ return ovs_iptunnel_handle_offloads(skb, false, lisp_fix_segment);
}
#else
-static int handle_offloads(struct sk_buff *skb)
+static struct sk_buff *handle_offloads(struct sk_buff *skb)
{
+ int err = 0;
+
if (skb_is_gso(skb)) {
- int err;
- if (skb_is_encapsulated(skb))
- return -ENOSYS;
+ if (skb_is_encapsulated(skb)) {
+ err = -ENOSYS;
+ goto error;
+ }
err = skb_unclone(skb, GFP_ATOMIC);
if (unlikely(err))
- return err;
+ goto error;
skb_shinfo(skb)->gso_type |= SKB_GSO_UDP_TUNNEL;
} else if (skb->ip_summed != CHECKSUM_PARTIAL)
skb->ip_summed = CHECKSUM_NONE;
skb->encapsulation = 1;
- return 0;
+ return skb;
+error:
+ kfree_skb(skb);
+ return ERR_PTR(err);
}
#endif
int sent_len;
int err;
- if (unlikely(!OVS_CB(skb)->egress_tun_info))
- return -EINVAL;
+ if (unlikely(!OVS_CB(skb)->egress_tun_info)) {
+ err = -EINVAL;
+ goto error;
+ }
tun_key = &OVS_CB(skb)->egress_tun_info->tunnel;
if (skb->protocol != htons(ETH_P_IP) &&
skb->protocol != htons(ETH_P_IPV6)) {
- kfree_skb(skb);
- return 0;
+ err = 0;
+ goto error;
}
/* Route lookup */
lisp_build_header(vport, skb);
/* Offloading */
- err = handle_offloads(skb);
- if (err)
+ skb = handle_offloads(skb);
+ if (IS_ERR(skb)) {
+ err = PTR_ERR(skb);
+ skb = NULL;
goto err_free_rt;
+ }
skb->ignore_df = 1;
err_free_rt:
ip_rt_put(rt);
error:
+ kfree_skb(skb);
return err;
}