diff options
Diffstat (limited to 'net/ipv4/esp4.c')
| -rw-r--r-- | net/ipv4/esp4.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/net/ipv4/esp4.c b/net/ipv4/esp4.c index 1738113268bc..3350a7d50669 100644 --- a/net/ipv4/esp4.c +++ b/net/ipv4/esp4.c @@ -163,7 +163,7 @@ static int esp_input(struct xfrm_state *x, struct sk_buff *skb) u8 nexthdr[2]; struct scatterlist *sg; int padlen; - int err; + int err = -EINVAL; if (!pskb_may_pull(skb, sizeof(*esph))) goto out; @@ -183,13 +183,14 @@ static int esp_input(struct xfrm_state *x, struct sk_buff *skb) BUG(); if (unlikely(memcmp(esp->auth.work_icv, sum, alen))) { - x->stats.integrity_failed++; + err = -EBADMSG; goto out; } } - if ((nfrags = skb_cow_data(skb, 0, &trailer)) < 0) + if ((err = skb_cow_data(skb, 0, &trailer)) < 0) goto out; + nfrags = err; skb->ip_summed = CHECKSUM_NONE; @@ -202,6 +203,7 @@ static int esp_input(struct xfrm_state *x, struct sk_buff *skb) sg = &esp->sgbuf[0]; if (unlikely(nfrags > ESP_NUM_FAST_SG)) { + err = -ENOMEM; sg = kmalloc(sizeof(struct scatterlist)*nfrags, GFP_ATOMIC); if (!sg) goto out; @@ -214,11 +216,12 @@ static int esp_input(struct xfrm_state *x, struct sk_buff *skb) if (unlikely(sg != &esp->sgbuf[0])) kfree(sg); if (unlikely(err)) - return err; + goto out; if (skb_copy_bits(skb, skb->len-alen-2, nexthdr, 2)) BUG(); + err = -EINVAL; padlen = nexthdr[0]; if (padlen+2 >= elen) goto out; @@ -276,7 +279,7 @@ static int esp_input(struct xfrm_state *x, struct sk_buff *skb) return nexthdr[1]; out: - return -EINVAL; + return err; } static u32 esp4_get_mtu(struct xfrm_state *x, int mtu) |