diff options
| author | James Bottomley <jejb@sparkweed.localdomain> | 2006-09-23 21:03:52 -0500 |
|---|---|---|
| committer | James Bottomley <jejb@sparkweed.localdomain> | 2006-09-23 21:03:52 -0500 |
| commit | 1aedf2ccc60fade26c46fae12e28664d0da3f199 (patch) | |
| tree | d91083e3079f1ddb942a382ac2b5a7525570ad59 /net/ipv4/ip_gre.c | |
| parent | dfdc58ba354adb80d67c99f7be84f95a8e02e466 (diff) | |
| parent | 1ab9dd0902df4f4ff56fbf672220549090ab28ba (diff) | |
Merge mulgrave-w:git/linux-2.6
Conflicts:
include/linux/blkdev.h
Trivial merge to incorporate tag prototypes.
Diffstat (limited to 'net/ipv4/ip_gre.c')
| -rw-r--r-- | net/ipv4/ip_gre.c | 27 |
1 files changed, 15 insertions, 12 deletions
diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c index 0f9b3a31997b..f5fba051df3d 100644 --- a/net/ipv4/ip_gre.c +++ b/net/ipv4/ip_gre.c @@ -393,7 +393,8 @@ out: int code = skb->h.icmph->code; int rel_type = 0; int rel_code = 0; - int rel_info = 0; + __be32 rel_info = 0; + __u32 n = 0; u16 flags; int grehlen = (iph->ihl<<2) + 4; struct sk_buff *skb2; @@ -422,14 +423,16 @@ out: default: return; case ICMP_PARAMETERPROB: - if (skb->h.icmph->un.gateway < (iph->ihl<<2)) + n = ntohl(skb->h.icmph->un.gateway) >> 24; + if (n < (iph->ihl<<2)) return; /* So... This guy found something strange INSIDE encapsulated packet. Well, he is fool, but what can we do ? */ rel_type = ICMP_PARAMETERPROB; - rel_info = skb->h.icmph->un.gateway - grehlen; + n -= grehlen; + rel_info = htonl(n << 24); break; case ICMP_DEST_UNREACH: @@ -440,13 +443,14 @@ out: return; case ICMP_FRAG_NEEDED: /* And it is the only really necessary thing :-) */ - rel_info = ntohs(skb->h.icmph->un.frag.mtu); - if (rel_info < grehlen+68) + n = ntohs(skb->h.icmph->un.frag.mtu); + if (n < grehlen+68) return; - rel_info -= grehlen; + n -= grehlen; /* BSD 4.2 MORE DOES NOT EXIST IN NATURE. */ - if (rel_info > ntohs(eiph->tot_len)) + if (n > ntohs(eiph->tot_len)) return; + rel_info = htonl(n); break; default: /* All others are translated to HOST_UNREACH. @@ -508,12 +512,11 @@ out: /* change mtu on this route */ if (type == ICMP_DEST_UNREACH && code == ICMP_FRAG_NEEDED) { - if (rel_info > dst_mtu(skb2->dst)) { + if (n > dst_mtu(skb2->dst)) { kfree_skb(skb2); return; } - skb2->dst->ops->update_pmtu(skb2->dst, rel_info); - rel_info = htonl(rel_info); + skb2->dst->ops->update_pmtu(skb2->dst, n); } else if (type == ICMP_TIME_EXCEEDED) { struct ip_tunnel *t = netdev_priv(skb2->dev); if (t->parms.iph.ttl) { @@ -576,7 +579,7 @@ static int ipgre_rcv(struct sk_buff *skb) if (flags&GRE_CSUM) { switch (skb->ip_summed) { - case CHECKSUM_HW: + case CHECKSUM_COMPLETE: csum = (u16)csum_fold(skb->csum); if (!csum) break; @@ -584,7 +587,7 @@ static int ipgre_rcv(struct sk_buff *skb) case CHECKSUM_NONE: skb->csum = 0; csum = __skb_checksum_complete(skb); - skb->ip_summed = CHECKSUM_HW; + skb->ip_summed = CHECKSUM_COMPLETE; } offset += 4; } |