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authorBenoît Ganne <bganne@cisco.com>2019-06-05 19:08:40 +0200
committerNeale Ranns <nranns@cisco.com>2019-06-06 08:07:35 +0000
commit286921eef8aa07e9edd83078c0a8397d06dc448c (patch)
treefa310f46dc21b0be08814e3bab143f35b1e3238b /src/plugins/gbp/gbp_classify_node.c
parentbe16beb9e47fe861fa77eb9a974abed1d6638009 (diff)
gbp: fix lpm classification with vlan
Fix GBP LPM packet classification in the presence of a VLAN header. Change-Id: I2ff63b34f7475d696b10b5a245ff802bbb1ff01a Signed-off-by: Benoît Ganne <bganne@cisco.com>
Diffstat (limited to 'src/plugins/gbp/gbp_classify_node.c')
-rw-r--r--src/plugins/gbp/gbp_classify_node.c62
1 files changed, 12 insertions, 50 deletions
diff --git a/src/plugins/gbp/gbp_classify_node.c b/src/plugins/gbp/gbp_classify_node.c
index f7124be84dc..a2d6d4c47ae 100644
--- a/src/plugins/gbp/gbp_classify_node.c
+++ b/src/plugins/gbp/gbp_classify_node.c
@@ -280,69 +280,31 @@ typedef enum gbp_lpm_classify_next_t_
} gbp_lpm_classify_next_t;
always_inline void
-gbp_classify_get_src_ip4_address (const ethernet_header_t * eh0,
- const ip4_address_t ** ip4)
-{
- const ip4_header_t *iph4;
-
- iph4 = (ip4_header_t *) (eh0 + 1);
- *ip4 = &iph4->src_address;
-}
-
-always_inline void
-gbp_classify_get_src_ip6_address (const ethernet_header_t * eh0,
- const ip6_address_t ** ip6)
-{
- const ip6_header_t *iph6;
-
- iph6 = (ip6_header_t *) (eh0 + 1);
- *ip6 = &iph6->src_address;
-}
-
-always_inline void
gbp_classify_get_src_ip_address (const ethernet_header_t * eh0,
const ip4_address_t ** ip4,
const ip6_address_t ** ip6)
{
u16 etype = clib_net_to_host_u16 (eh0->type);
+ const void *l3h0 = eh0 + 1;
+
+ if (ETHERNET_TYPE_VLAN == etype)
+ {
+ const ethernet_vlan_header_t *vh0 =
+ (ethernet_vlan_header_t *) (eh0 + 1);
+ etype = clib_net_to_host_u16 (vh0->type);
+ l3h0 = vh0 + 1;
+ }
switch (etype)
{
case ETHERNET_TYPE_IP4:
- gbp_classify_get_src_ip4_address (eh0, ip4);
+ *ip4 = &((const ip4_header_t *) l3h0)->src_address;
break;
case ETHERNET_TYPE_IP6:
- gbp_classify_get_src_ip6_address (eh0, ip6);
+ *ip6 = &((const ip6_header_t *) l3h0)->src_address;
break;
- case ETHERNET_TYPE_VLAN:
- {
- ethernet_vlan_header_t *vh0;
-
- vh0 = (ethernet_vlan_header_t *) (eh0 + 1);
-
- switch (clib_net_to_host_u16 (vh0->type))
- {
- case ETHERNET_TYPE_IP4:
- {
- gbp_classify_get_src_ip4_address (eh0, ip4);
- break;
- case ETHERNET_TYPE_IP6:
- gbp_classify_get_src_ip6_address (eh0, ip6);
- break;
- }
- }
- break;
- }
case ETHERNET_TYPE_ARP:
- {
- const ethernet_arp_header_t *ea0;
-
- ea0 = (ethernet_arp_header_t *) (eh0 + 1);
-
- *ip4 = &ea0->ip4_over_ethernet[0].ip4;
- break;
- }
- default:
+ *ip4 = &((ethernet_arp_header_t *) l3h0)->ip4_over_ethernet[0].ip4;
break;
}
}