aboutsummaryrefslogtreecommitdiffstats
path: root/net/core
diff options
context:
space:
mode:
authorTom Herbert <tom@herbertland.com>2015-06-04 09:16:46 -0700
committerDavid S. Miller <davem@davemloft.net>2015-06-04 15:44:31 -0700
commitb3baa0fbd02a1a9d493d8cb92ae4a4491b9e9d13 (patch)
treee19a85590547279215e55378b5d34f76b4e07d7a /net/core
parent1fdd512c92003cf2d671ba22753d13302bf8cd1d (diff)
mpls: Add MPLS entropy label in flow_keys
In flow dissector if an MPLS header contains an entropy label this is saved in the new keyid field of flow_keys. The entropy label is then represented in the flow hash function input. Signed-off-by: Tom Herbert <tom@herbertland.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core')
-rw-r--r--net/core/flow_dissector.c35
1 files changed, 35 insertions, 0 deletions
diff --git a/net/core/flow_dissector.c b/net/core/flow_dissector.c
index 7ddc0a7b3da5..77e22e4fc898 100644
--- a/net/core/flow_dissector.c
+++ b/net/core/flow_dissector.c
@@ -15,6 +15,7 @@
#include <linux/ppp_defs.h>
#include <linux/stddef.h>
#include <linux/if_ether.h>
+#include <linux/mpls.h>
#include <net/flow_dissector.h>
#include <scsi/fc/fc_fcoe.h>
@@ -288,6 +289,37 @@ ipv6:
}
return true;
}
+
+ case htons(ETH_P_MPLS_UC):
+ case htons(ETH_P_MPLS_MC): {
+ struct mpls_label *hdr, _hdr[2];
+mpls:
+ hdr = __skb_header_pointer(skb, nhoff, sizeof(_hdr), data,
+ hlen, &_hdr);
+ if (!hdr)
+ return false;
+
+ if ((ntohl(hdr[0].entry) & MPLS_LS_LABEL_MASK) ==
+ MPLS_LABEL_ENTROPY) {
+ if (skb_flow_dissector_uses_key(flow_dissector,
+ FLOW_DISSECTOR_KEY_MPLS_ENTROPY)) {
+ key_keyid = skb_flow_dissector_target(flow_dissector,
+ FLOW_DISSECTOR_KEY_MPLS_ENTROPY,
+ target_container);
+ key_keyid->keyid = hdr[1].entry &
+ htonl(MPLS_LS_LABEL_MASK);
+ }
+
+ key_basic->n_proto = proto;
+ key_basic->ip_proto = ip_proto;
+ key_control->thoff = (u16)nhoff;
+
+ return true;
+ }
+
+ return true;
+ }
+
case htons(ETH_P_FCOE):
key_control->thoff = (u16)(nhoff + FCOE_HEADER_LEN);
/* fall through */
@@ -357,6 +389,9 @@ ipv6:
case IPPROTO_IPV6:
proto = htons(ETH_P_IPV6);
goto ipv6;
+ case IPPROTO_MPLS:
+ proto = htons(ETH_P_MPLS_UC);
+ goto mpls;
default:
break;
}

Privacy Policy