hello Xin Long,
On Sat, 2017-05-20 at 02:40 +0800, Xin Long wrote:
> On Fri, May 19, 2017 at 11:34 PM, Davide Caratti <dcaratti@xxxxxxxxxx> wrote:
> > @@ -515,14 +515,23 @@ struct sock *sctp_err_lookup(struct net *net, int family, struct sk_buff *skb,
> > * or the chunk type or the Initiate Tag does not match, silently
> > * discard the packet.
> > */
> > + offset = skb_transport_offset(skb);
> > + sctphdr = skb_header_pointer(skb, offset, sizeof(_sctphdr), &_sctphdr);
> > + if (unlikely(!sctphdr))
> > + goto out;
> > +
> > + vtag = ntohl(sctphdr->vtag);
> > if (vtag == 0) {
> > - chunkhdr = (void *)sctphdr + sizeof(struct sctphdr);
> > - if (len < sizeof(struct sctphdr) + sizeof(sctp_chunkhdr_t)
> > - + sizeof(__be32) ||
> > + offset += sizeof(_sctphdr);
>
> will be nice to delete this line, and use
> > + /* chunk header + first 4 octects of init header */
> > + chunkhdr = skb_header_pointer(skb, offset,
>
> chunkhdr = skb_header_pointer(skb, offset + sizeof(_sctphdr), ;)
> wdyt?
that's right, 'offset' does not need the re-assignment: I will post the v2
soon. Thanks!
--
davide
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