tc: add meta match on receive hash

Trivial extension to existing meta data match rules to allow
matching on skb receive hash value.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 7 insertions, 0 deletions

diff --git a/include/linux/tc_ematch/tc_em_meta.h b/include/linux/tc_ematch/tc_em_meta.h
index 0864206ec1a..7138962664f 100644
--- a/include/linux/tc_ematch/tc_em_meta.h
+++ b/include/linux/tc_ematch/tc_em_meta.h
@@ -79,6 +79,7 @@ enum {
         TCF_META_ID_SK_SENDMSG_OFF,
         TCF_META_ID_SK_WRITE_PENDING,
         TCF_META_ID_VLAN_TAG,
+        TCF_META_ID_RXHASH,
         __TCF_META_ID_MAX
 };
 #define TCF_META_ID_MAX (__TCF_META_ID_MAX - 1)
diff --git a/net/sched/em_meta.c b/net/sched/em_meta.c
index 3bcac8aa333..34da5e29ea1 100644
--- a/net/sched/em_meta.c
+++ b/net/sched/em_meta.c
@@ -223,6 +223,11 @@ META_COLLECTOR(int_maclen)
         dst->value = skb->mac_len;
 }
 
+META_COLLECTOR(int_rxhash)
+{
+        dst->value = skb_get_rxhash(skb);
+}
+
 /**************************************************************************
  * Netfilter
  **************************************************************************/
@@ -541,6 +546,7 @@ static struct meta_ops __meta_ops[TCF_META_TYPE_MAX+1][TCF_META_ID_MAX+1] = {
                 [META_ID(SK_SENDMSG_OFF)]       = META_FUNC(int_sk_sendmsg_off),
                 [META_ID(SK_WRITE_PENDING)]     = META_FUNC(int_sk_write_pend),
                 [META_ID(VLAN_TAG)]             = META_FUNC(int_vlan_tag),
+                [META_ID(RXHASH)]               = META_FUNC(int_rxhash),
         }
 };