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authorNeale Ranns <nranns@cisco.com>2018-12-20 12:03:59 -0800
committerNeale Ranns <nranns@cisco.com>2018-12-21 18:12:25 +0000
commit1c17e2ecac42e001ce905418463edcb26fe58b01 (patch)
treea1c5c69e868d28eb3f3b338db4cde65eff7b2534 /src/plugins/gbp/gbp_policy.c
parentfc7344f9beffe506085730e8e03f7c8771deb3a6 (diff)
GBP: add allowed ethertypes to contracts
Change-Id: I74782d3b9b71a071bb500c34866a017b8ee15767 Signed-off-by: Neale Ranns <nranns@cisco.com>
Diffstat (limited to 'src/plugins/gbp/gbp_policy.c')
-rw-r--r--src/plugins/gbp/gbp_policy.c131
1 files changed, 81 insertions, 50 deletions
diff --git a/src/plugins/gbp/gbp_policy.c b/src/plugins/gbp/gbp_policy.c
index 3b204ff4da8..174223e09f7 100644
--- a/src/plugins/gbp/gbp_policy.c
+++ b/src/plugins/gbp/gbp_policy.c
@@ -106,6 +106,19 @@ gbp_rule_l2_redirect (const gbp_rule_t * gu, vlib_buffer_t * b0)
return (dpo->dpoi_next_node);
}
+always_inline u8
+gbp_policy_is_ethertype_allowed (const gbp_contract_t * gc0, u16 ethertype)
+{
+ u16 *et;
+
+ vec_foreach (et, gc0->gc_allowed_ethertypes)
+ {
+ if (*et == ethertype)
+ return (1);
+ }
+ return (0);
+}
+
static uword
gbp_policy_inline (vlib_main_t * vm,
vlib_node_runtime_t * node,
@@ -130,9 +143,9 @@ gbp_policy_inline (vlib_main_t * vm,
{
const ethernet_header_t *h0;
const gbp_endpoint_t *ge0;
+ const gbp_contract_t *gc0;
gbp_policy_next_t next0;
gbp_contract_key_t key0;
- gbp_contract_t *gc0;
u32 bi0, sw_if_index0;
vlib_buffer_t *b0;
index_t gci0;
@@ -204,66 +217,84 @@ gbp_policy_inline (vlib_main_t * vm,
if (INDEX_INVALID != gci0)
{
+ u32 rule_match_p0, trace_bitmap0;
fa_5tuple_opaque_t pkt_5tuple0;
- u8 action0 = 0;
u32 acl_pos_p0, acl_match_p0;
- u32 rule_match_p0, trace_bitmap0;
- u8 *h0, l2_len0;
+ u8 is_ip60, l2_len0, action0;
+ const gbp_rule_t *gu;
u16 ether_type0;
- u8 is_ip60 = 0;
+ const u8 *h0;
+ action0 = 0;
gc0 = gbp_contract_get (gci0);
l2_len0 = vnet_buffer (b0)->l2.l2_len;
h0 = vlib_buffer_get_current (b0);
- ether_type0 =
- clib_net_to_host_u16 (*(u16 *) (h0 + l2_len0 - 2));
-
- is_ip60 = (ether_type0 == ETHERNET_TYPE_IP6) ? 1 : 0;
- /*
- * tests against the ACL
- */
- acl_plugin_fill_5tuple_inline (gm->
- acl_plugin.p_acl_main,
- gc0->gc_lc_index, b0,
- is_ip60,
- /* is_input */ 0,
- /* is_l2_path */ 1,
- &pkt_5tuple0);
- acl_plugin_match_5tuple_inline (gm->
- acl_plugin.p_acl_main,
- gc0->gc_lc_index,
- &pkt_5tuple0, is_ip60,
- &action0, &acl_pos_p0,
- &acl_match_p0,
- &rule_match_p0,
- &trace_bitmap0);
-
- if (action0 > 0)
- {
- gbp_rule_t *gu;
+ ether_type0 = *(u16 *) (h0 + l2_len0 - 2);
- vnet_buffer2 (b0)->gbp.flags |= VXLAN_GBP_GPFLAGS_A;
- gu = gbp_rule_get (gc0->gc_rules[rule_match_p0]);
+ if (!gbp_policy_is_ethertype_allowed (gc0, ether_type0))
+ {
+ /*
+ * black list model so drop
+ */
+ goto trace;
+ }
- switch (gu->gu_action)
+ if ((ether_type0 ==
+ clib_net_to_host_u16 (ETHERNET_TYPE_IP6))
+ || (ether_type0 ==
+ clib_net_to_host_u16 (ETHERNET_TYPE_IP4)))
+ {
+ is_ip60 =
+ (ether_type0 ==
+ clib_net_to_host_u16 (ETHERNET_TYPE_IP6)) ? 1 :
+ 0;
+ /*
+ * tests against the ACL
+ */
+ acl_plugin_fill_5tuple_inline (gm->
+ acl_plugin.p_acl_main,
+ gc0->gc_lc_index, b0,
+ is_ip60,
+ /* is_input */ 0,
+ /* is_l2_path */ 1,
+ &pkt_5tuple0);
+ acl_plugin_match_5tuple_inline (gm->
+ acl_plugin.p_acl_main,
+ gc0->gc_lc_index,
+ &pkt_5tuple0,
+ is_ip60, &action0,
+ &acl_pos_p0,
+ &acl_match_p0,
+ &rule_match_p0,
+ &trace_bitmap0);
+
+ if (action0 > 0)
{
- case GBP_RULE_PERMIT:
- next0 = vnet_l2_feature_next
- (b0,
- gpm->l2_output_feat_next
- [is_port_based],
- (is_port_based ?
- L2OUTPUT_FEAT_GBP_POLICY_PORT :
- L2OUTPUT_FEAT_GBP_POLICY_MAC));
- break;
- case GBP_RULE_DENY:
- ASSERT (0);
- next0 = 0;
- break;
- case GBP_RULE_REDIRECT:
- next0 = gbp_rule_l2_redirect (gu, b0);
- break;
+ vnet_buffer2 (b0)->gbp.flags |=
+ VXLAN_GBP_GPFLAGS_A;
+ gu =
+ gbp_rule_get (gc0->gc_rules[rule_match_p0]);
+
+ switch (gu->gu_action)
+ {
+ case GBP_RULE_PERMIT:
+ next0 = vnet_l2_feature_next
+ (b0,
+ gpm->l2_output_feat_next
+ [is_port_based],
+ (is_port_based ?
+ L2OUTPUT_FEAT_GBP_POLICY_PORT :
+ L2OUTPUT_FEAT_GBP_POLICY_MAC));
+ break;
+ case GBP_RULE_DENY:
+ ASSERT (0);
+ next0 = 0;
+ break;
+ case GBP_RULE_REDIRECT:
+ next0 = gbp_rule_l2_redirect (gu, b0);
+ break;
+ }
}
}
}