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Merge branch 'flow_dissector-next'

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Tom Herbert says:

====================
flow_dissector: Fix MPLS parsing and add ext hdr support

Need to shift label. Added parsing of dst, hop-by-hop, and routing
extension headers.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2015-06-12 14:24:28 -07:00
commit ea70477099
1 changed files with 19 additions and 2 deletions
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21
net/core/flow_dissector.c
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@ -299,8 +299,8 @@ bool __skb_flow_dissect(const struct sk_buff *skb,
if (!hdr)
return false;
if ((ntohl(hdr[0].entry) & MPLS_LS_LABEL_MASK) ==
MPLS_LABEL_ENTROPY) {
if ((ntohl(hdr[0].entry) & MPLS_LS_LABEL_MASK) >>
MPLS_LS_LABEL_SHIFT == MPLS_LABEL_ENTROPY) {
if (skb_flow_dissector_uses_key(flow_dissector,
FLOW_DISSECTOR_KEY_MPLS_ENTROPY)) {
key_keyid = skb_flow_dissector_target(flow_dissector,
@ -327,6 +327,7 @@ bool __skb_flow_dissect(const struct sk_buff *skb,
return false;
}
ip_proto_again:
switch (ip_proto) {
case IPPROTO_GRE: {
struct gre_hdr {
@ -383,6 +384,22 @@ bool __skb_flow_dissect(const struct sk_buff *skb,
}
goto again;
}
case NEXTHDR_HOP:
case NEXTHDR_ROUTING:
case NEXTHDR_DEST: {
u8 _opthdr[2], *opthdr;
if (proto != htons(ETH_P_IPV6))
break;
opthdr = __skb_header_pointer(skb, nhoff, sizeof(_opthdr),
data, hlen, &_opthdr);
ip_proto = _opthdr[0];
nhoff += (_opthdr[1] + 1) << 3;
goto ip_proto_again;
}
case IPPROTO_IPIP:
proto = htons(ETH_P_IP);
goto ip;