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authorNeale Ranns <nranns@cisco.com>2018-11-07 09:25:54 -0800
committerDamjan Marion <dmarion@me.com>2018-11-15 17:22:55 +0000
commit13a08cc0984496d50722ffb75e2f48c5d84fb9a7 (patch)
treeee1088dbe24d45ee725134ca5589acaf70ffc6d0 /src/plugins/gbp/gbp_policy.c
parent96e2d4407b1538d8df4e277ba33b85876589e198 (diff)
GBP: redirect contracts
Change-Id: I463b153de93cfec29a9c15e8e84e41f6003d4c5f 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.c103
1 files changed, 74 insertions, 29 deletions
diff --git a/src/plugins/gbp/gbp_policy.c b/src/plugins/gbp/gbp_policy.c
index 6d84a994d41..3b204ff4da8 100644
--- a/src/plugins/gbp/gbp_policy.c
+++ b/src/plugins/gbp/gbp_policy.c
@@ -14,6 +14,7 @@
*/
#include <plugins/gbp/gbp.h>
+#include <plugins/gbp/gbp_policy_dpo.h>
#include <vnet/vxlan-gbp/vxlan_gbp_packet.h>
@@ -67,6 +68,44 @@ typedef struct gbp_policy_trace_t_
u32 allowed;
} gbp_policy_trace_t;
+always_inline dpo_proto_t
+ethertype_to_dpo_proto (u16 etype)
+{
+ etype = clib_net_to_host_u16 (etype);
+
+ switch (etype)
+ {
+ case ETHERNET_TYPE_IP4:
+ return (DPO_PROTO_IP4);
+ case ETHERNET_TYPE_IP6:
+ return (DPO_PROTO_IP6);
+ }
+
+ return (DPO_PROTO_NONE);
+}
+
+always_inline u32
+gbp_rule_l2_redirect (const gbp_rule_t * gu, vlib_buffer_t * b0)
+{
+ const ethernet_header_t *eth0;
+ const dpo_id_t *dpo;
+ dpo_proto_t dproto;
+
+ eth0 = vlib_buffer_get_current (b0);
+ /* pop the ethernet header to prepare for L3 rewrite */
+ vlib_buffer_advance (b0, vnet_buffer (b0)->l2.l2_len);
+
+ dproto = ethertype_to_dpo_proto (eth0->type);
+ dpo = &gu->gu_dpo[GBP_POLICY_NODE_L2][dproto];
+
+ /* save the LB index for the next node and reset the IP flow hash
+ * so it's recalculated */
+ vnet_buffer (b0)->ip.adj_index[VLIB_TX] = dpo->dpoi_index;
+ vnet_buffer (b0)->ip.flow_hash = 0;
+
+ return (dpo->dpoi_next_node);
+}
+
static uword
gbp_policy_inline (vlib_main_t * vm,
vlib_node_runtime_t * node,
@@ -93,12 +132,12 @@ gbp_policy_inline (vlib_main_t * vm,
const gbp_endpoint_t *ge0;
gbp_policy_next_t next0;
gbp_contract_key_t key0;
- gbp_contract_value_t value0 = {
- .as_u64 = ~0,
- };
+ gbp_contract_t *gc0;
u32 bi0, sw_if_index0;
vlib_buffer_t *b0;
+ index_t gci0;
+ gc0 = NULL;
next0 = GBP_POLICY_NEXT_DENY;
bi0 = from[0];
to_next[0] = bi0;
@@ -136,7 +175,7 @@ gbp_policy_inline (vlib_main_t * vm,
vnet_buffer (b0)->l2.bd_index);
if (NULL != ge0)
- key0.gck_dst = ge0->ge_epg_id;
+ key0.gck_dst = ge0->ge_fwd.gef_epg_id;
else
/* If you cannot determine the destination EP then drop */
goto trace;
@@ -161,9 +200,9 @@ gbp_policy_inline (vlib_main_t * vm,
}
else
{
- value0.as_u64 = gbp_acl_lookup (&key0);
+ gci0 = gbp_contract_find (&key0);
- if (~0 != value0.gc_lc_index)
+ if (INDEX_INVALID != gci0)
{
fa_5tuple_opaque_t pkt_5tuple0;
u8 action0 = 0;
@@ -173,6 +212,7 @@ gbp_policy_inline (vlib_main_t * vm,
u16 ether_type0;
u8 is_ip60 = 0;
+ gc0 = gbp_contract_get (gci0);
l2_len0 = vnet_buffer (b0)->l2.l2_len;
h0 = vlib_buffer_get_current (b0);
@@ -185,14 +225,14 @@ gbp_policy_inline (vlib_main_t * vm,
*/
acl_plugin_fill_5tuple_inline (gm->
acl_plugin.p_acl_main,
- value0.gc_lc_index, b0,
+ 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,
- value0.gc_lc_index,
+ gc0->gc_lc_index,
&pkt_5tuple0, is_ip60,
&action0, &acl_pos_p0,
&acl_match_p0,
@@ -201,17 +241,30 @@ gbp_policy_inline (vlib_main_t * vm,
if (action0 > 0)
{
- vnet_buffer2 (b0)->gbp.flags |= VXLAN_GBP_GPFLAGS_A;
+ gbp_rule_t *gu;
- 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));
- ;
+ 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;
+ }
}
}
}
@@ -237,8 +290,8 @@ gbp_policy_inline (vlib_main_t * vm,
vlib_add_trace (vm, node, b0, sizeof (*t));
t->src_epg = key0.gck_src;
t->dst_epg = key0.gck_dst;
- t->acl_index = value0.gc_acl_index;
- t->allowed = (next0 != GBP_POLICY_NEXT_DENY);
+ t->acl_index = (gc0 ? gc0->gc_acl_index : ~0),
+ t->allowed = (next0 != GBP_POLICY_NEXT_DENY);
}
/* verify speculative enqueue, maybe switch current next frame */
@@ -308,15 +361,7 @@ VLIB_REGISTER_NODE (gbp_policy_mac_node) = {
.vector_size = sizeof (u32),
.format_trace = format_gbp_policy_trace,
.type = VLIB_NODE_TYPE_INTERNAL,
-
- .n_errors = ARRAY_LEN(gbp_policy_error_strings),
- .error_strings = gbp_policy_error_strings,
-
- .n_next_nodes = GBP_POLICY_N_NEXT,
-
- .next_nodes = {
- [GBP_POLICY_NEXT_DENY] = "error-drop",
- },
+ .sibling_of = "gbp-policy-port",
};
VLIB_NODE_FUNCTION_MULTIARCH (gbp_policy_mac_node, gbp_policy_mac);