esp: Fix error handling on layer 2 xmit.
esp_output_tail() and esp6_output_tail() can return negative
and positive error values. We currently treat only negative
values as errors, fix this to treat both cases as error.
Fixes: fca11ebde3f0 ("esp4: Reorganize esp_output")
Fixes: 383d0350f2cc ("esp6: Reorganize esp_output")
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
diff --git a/net/ipv4/esp4_offload.c b/net/ipv4/esp4_offload.c
index e066601..5011232 100644
--- a/net/ipv4/esp4_offload.c
+++ b/net/ipv4/esp4_offload.c
@@ -257,7 +257,7 @@ static int esp_xmit(struct xfrm_state *x, struct sk_buff *skb, netdev_features_
esp.seqno = cpu_to_be64(xo->seq.low + ((u64)xo->seq.hi << 32));
err = esp_output_tail(x, skb, &esp);
- if (err < 0)
+ if (err)
return err;
secpath_reset(skb);
