aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
Diffstat
-rw-r--r--src/plugins/gbp/gbp.h1
-rw-r--r--src/plugins/gbp/gbp_api.c1
-rw-r--r--src/plugins/gbp/gbp_contract.c7
-rw-r--r--src/plugins/gbp/gbp_contract.h137
-rw-r--r--src/plugins/gbp/gbp_policy.c19
-rw-r--r--src/plugins/gbp/gbp_policy.h53
-rw-r--r--src/plugins/gbp/gbp_policy_dpo.c212
-rw-r--r--src/plugins/gbp/gbp_policy_node.c277
8 files changed, 301 insertions, 406 deletions
diff --git a/src/plugins/gbp/gbp.h b/src/plugins/gbp/gbp.h
index e194a9df82c..50039b3bdcf 100644
--- a/src/plugins/gbp/gbp.h
+++ b/src/plugins/gbp/gbp.h
@@ -36,7 +36,6 @@
#include <plugins/gbp/gbp_types.h>
#include <plugins/gbp/gbp_endpoint.h>
#include <plugins/gbp/gbp_endpoint_group.h>
-#include <plugins/gbp/gbp_contract.h>
#include <plugins/gbp/gbp_subnet.h>
#include <plugins/gbp/gbp_recirc.h>
diff --git a/src/plugins/gbp/gbp_api.c b/src/plugins/gbp/gbp_api.c
index fca85a79ce6..f487e160808 100644
--- a/src/plugins/gbp/gbp_api.c
+++ b/src/plugins/gbp/gbp_api.c
@@ -31,6 +31,7 @@
#include <gbp/gbp_bridge_domain.h>
#include <gbp/gbp_route_domain.h>
#include <gbp/gbp_ext_itf.h>
+#include <gbp/gbp_contract.h>
#include <vlibapi/api.h>
#include <vlibmemory/api.h>
diff --git a/src/plugins/gbp/gbp_contract.c b/src/plugins/gbp/gbp_contract.c
index a24edb362f5..c7c23782f44 100644
--- a/src/plugins/gbp/gbp_contract.c
+++ b/src/plugins/gbp/gbp_contract.c
@@ -19,10 +19,17 @@
#include <plugins/gbp/gbp_bridge_domain.h>
#include <plugins/gbp/gbp_route_domain.h>
#include <plugins/gbp/gbp_policy_dpo.h>
+#include <plugins/gbp/gbp_contract.h>
#include <vnet/dpo/load_balance.h>
#include <vnet/dpo/drop_dpo.h>
+char *gbp_contract_error_strings[] = {
+#define _(sym,string) string,
+ foreach_gbp_contract_error
+#undef _
+};
+
/**
* Single contract DB instance
*/
diff --git a/src/plugins/gbp/gbp_contract.h b/src/plugins/gbp/gbp_contract.h
index 8e621a47d28..c87af522286 100644
--- a/src/plugins/gbp/gbp_contract.h
+++ b/src/plugins/gbp/gbp_contract.h
@@ -16,9 +16,10 @@
#ifndef __GBP_CONTRACT_H__
#define __GBP_CONTRACT_H__
+#include <plugins/gbp/gbp.h>
#include <plugins/gbp/gbp_types.h>
-#define foreach_gbp_policy_error \
+#define foreach_gbp_contract_error \
_(ALLOW_NO_SCLASS, "allow-no-sclass") \
_(ALLOW_INTRA, "allow-intra-sclass") \
_(ALLOW_A_BIT, "allow-a-bit-set") \
@@ -29,6 +30,17 @@
_(DROP_NO_CONTRACT, "drop-no-contract") \
_(DROP_NO_DCLASS, "drop-no-dclass")
+typedef enum
+{
+#define _(sym,str) GBP_CONTRACT_ERROR_##sym,
+ foreach_gbp_contract_error
+#undef _
+ GBP_CONTRACT_N_ERROR,
+#define GBP_CONTRACT_N_ERROR GBP_CONTRACT_N_ERROR
+} gbp_contract_error_t;
+
+extern char *gbp_contract_error_strings[GBP_CONTRACT_N_ERROR];
+
/**
* The key for an Contract
*/
@@ -207,8 +219,129 @@ gbp_rule_get (index_t gui)
extern vlib_combined_counter_main_t gbp_contract_permit_counters;
extern vlib_combined_counter_main_t gbp_contract_drop_counters;
-#endif
+typedef enum
+{
+ GBP_CONTRACT_APPLY_L2,
+ GBP_CONTRACT_APPLY_IP4,
+ GBP_CONTRACT_APPLY_IP6,
+} gbp_contract_apply_type_t;
+
+static_always_inline gbp_rule_action_t
+gbp_contract_apply (vlib_main_t * vm, gbp_main_t * gm,
+ gbp_contract_key_t * key, vlib_buffer_t * b,
+ gbp_rule_t ** rule, u32 * intra, u32 * sclass1,
+ gbp_contract_error_t * err,
+ gbp_contract_apply_type_t type)
+{
+ fa_5tuple_opaque_t fa_5tuple;
+ const gbp_contract_t *contract;
+ index_t contract_index;
+ u32 acl_pos, acl_match, rule_match, trace_bitmap;
+ u16 etype;
+ u8 ip6, action;
+
+ *rule = 0;
+
+ if (key->gck_src == key->gck_dst)
+ {
+ /* intra-epg allowed */
+ (*intra)++;
+ *err = GBP_CONTRACT_ERROR_ALLOW_INTRA;
+ return GBP_RULE_PERMIT;
+ }
+
+ if (1 == key->gck_src || 1 == key->gck_dst)
+ {
+ /* sclass 1 allowed */
+ (*sclass1)++;
+ *err = GBP_CONTRACT_ERROR_ALLOW_SCLASS_1;
+ return GBP_RULE_PERMIT;
+ }
+
+ /* look for contract */
+ contract_index = gbp_contract_find (key);
+ if (INDEX_INVALID == contract_index)
+ {
+ *err = GBP_CONTRACT_ERROR_DROP_NO_CONTRACT;
+ return GBP_RULE_DENY;
+ }
+
+ contract = gbp_contract_get (contract_index);
+
+ *err = GBP_CONTRACT_ERROR_DROP_CONTRACT;
+
+ switch (type)
+ {
+ case GBP_CONTRACT_APPLY_IP4:
+ ip6 = 0;
+ break;
+ case GBP_CONTRACT_APPLY_IP6:
+ ip6 = 1;
+ break;
+ case GBP_CONTRACT_APPLY_L2:
+ {
+ /* check ethertype */
+ etype =
+ ((u16 *) (vlib_buffer_get_current (b) +
+ vnet_buffer (b)->l2.l2_len))[-1];
+
+ if (~0 == vec_search (contract->gc_allowed_ethertypes, etype))
+ {
+ *err = GBP_CONTRACT_ERROR_DROP_ETHER_TYPE;
+ goto contract_deny;
+ }
+
+ switch (clib_net_to_host_u16 (etype))
+ {
+ case ETHERNET_TYPE_IP4:
+ ip6 = 0;
+ break;
+ case ETHERNET_TYPE_IP6:
+ ip6 = 1;
+ break;
+ default:
+ goto contract_deny;
+ }
+ }
+ break;
+ }
+
+ /* check ACL */
+ action = 0;
+ acl_plugin_fill_5tuple_inline (gm->acl_plugin.p_acl_main,
+ contract->gc_lc_index, b, ip6,
+ 0 /* is_input */ ,
+ GBP_CONTRACT_APPLY_L2 ==
+ type /* is_l2_path */ , &fa_5tuple);
+ acl_plugin_match_5tuple_inline (gm->acl_plugin.p_acl_main,
+ contract->gc_lc_index, &fa_5tuple, ip6,
+ &action, &acl_pos, &acl_match, &rule_match,
+ &trace_bitmap);
+ if (action <= 0)
+ goto contract_deny;
+
+ *rule = gbp_rule_get (contract->gc_rules[rule_match]);
+ switch ((*rule)->gu_action)
+ {
+ case GBP_RULE_PERMIT:
+ case GBP_RULE_REDIRECT:
+ *err = GBP_CONTRACT_ERROR_ALLOW_CONTRACT;
+ vlib_increment_combined_counter (&gbp_contract_permit_counters,
+ vm->thread_index, contract_index, 1,
+ vlib_buffer_length_in_chain (vm, b));
+ return (*rule)->gu_action;
+ case GBP_RULE_DENY:
+ break;
+ }
+
+contract_deny:
+ vlib_increment_combined_counter (&gbp_contract_drop_counters,
+ vm->thread_index, contract_index, 1,
+ vlib_buffer_length_in_chain (vm, b));
+ return GBP_RULE_DENY;
+}
+#endif /* __GBP_CONTRACT_H__ */
/*
* fd.io coding-style-patch-verification: ON
*
diff --git a/src/plugins/gbp/gbp_policy.c b/src/plugins/gbp/gbp_policy.c
index 0f26701bd19..21e4bdba064 100644
--- a/src/plugins/gbp/gbp_policy.c
+++ b/src/plugins/gbp/gbp_policy.c
@@ -14,10 +14,27 @@
*/
#include <plugins/gbp/gbp.h>
-#include <plugins/gbp/gbp_policy_dpo.h>
+#include <plugins/gbp/gbp_policy.h>
+#include <vnet/vxlan-gbp/vxlan_gbp_packet.h>
gbp_policy_main_t gbp_policy_main;
+/* packet trace format function */
+u8 *
+format_gbp_policy_trace (u8 * s, va_list * args)
+{
+ CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
+ CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
+ gbp_policy_trace_t *t = va_arg (*args, gbp_policy_trace_t *);
+
+ s =
+ format (s, "scope:%d sclass:%d, dclass:%d, allowed:%d flags:%U", t->scope,
+ t->sclass, t->dclass, t->allowed, format_vxlan_gbp_header_gpflags,
+ t->flags);
+
+ return s;
+}
+
static clib_error_t *
gbp_policy_init (vlib_main_t * vm)
{
diff --git a/src/plugins/gbp/gbp_policy.h b/src/plugins/gbp/gbp_policy.h
new file mode 100644
index 00000000000..36bb4933c11
--- /dev/null
+++ b/src/plugins/gbp/gbp_policy.h
@@ -0,0 +1,53 @@
+/*
+ * Copyright (c) 2018 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __GBP_POLICY_H__
+#define __GBP_POLICY_H__
+
+#include <plugins/gbp/gbp_contract.h>
+
+/**
+ * per-packet trace data
+ */
+typedef struct gbp_policy_trace_t_
+{
+ /* per-pkt trace data */
+ gbp_scope_t scope;
+ sclass_t sclass;
+ sclass_t dclass;
+ u32 allowed;
+ u32 flags;
+} gbp_policy_trace_t;
+
+/* packet trace format function */
+u8 * format_gbp_policy_trace (u8 * s, va_list * args);
+
+static_always_inline void
+gbp_policy_trace(vlib_main_t * vm, vlib_node_runtime_t * node, vlib_buffer_t *b, const gbp_contract_key_t *key, u8 allowed)
+{
+ gbp_policy_trace_t *t;
+
+ if (PREDICT_TRUE (!(b->flags & VLIB_BUFFER_IS_TRACED)))
+ return;
+
+ t = vlib_add_trace (vm, node, b, sizeof (*t));
+ t->sclass = key->gck_src;
+ t->dclass = key->gck_dst;
+ t->scope = key->gck_scope;
+ t->allowed = allowed;
+ t->flags = vnet_buffer2 (b)->gbp.flags;
+}
+
+#endif /* __GBP_POLICY_H__ */
diff --git a/src/plugins/gbp/gbp_policy_dpo.c b/src/plugins/gbp/gbp_policy_dpo.c
index 8152315c7b8..dec30e46336 100644
--- a/src/plugins/gbp/gbp_policy_dpo.c
+++ b/src/plugins/gbp/gbp_policy_dpo.c
@@ -19,8 +19,10 @@
#include <vnet/vxlan-gbp/vxlan_gbp.h>
#include <plugins/gbp/gbp.h>
+#include <plugins/gbp/gbp_policy.h>
#include <plugins/gbp/gbp_policy_dpo.h>
#include <plugins/gbp/gbp_recirc.h>
+#include <plugins/gbp/gbp_contract.h>
#ifndef CLIB_MARCH_VARIANT
/**
@@ -222,31 +224,6 @@ VLIB_INIT_FUNCTION (gbp_policy_dpo_module_init);
typedef enum
{
-#define _(sym,str) GBP_POLICY_DPO_ERROR_##sym,
- foreach_gbp_policy_error
-#undef _
- GBP_POLICY_N_ERROR,
-} gbp_policy_dpo_error_t;
-
-static char *gbp_policy_dpo_error_strings[] = {
-#define _(sym,string) string,
- foreach_gbp_policy_error
-#undef _
-};
-
-typedef struct gbp_policy_dpo_trace_t_
-{
- gbp_scope_t scope;
- sclass_t sclass;
- sclass_t dclass;
- u32 acl_index;
- u32 flags;
- u32 action;
- u32 gci;
-} gbp_policy_dpo_trace_t;
-
-typedef enum
-{
GBP_POLICY_DROP,
GBP_POLICY_N_NEXT,
} gbp_policy_next_t;
@@ -274,14 +251,12 @@ gbp_policy_dpo_inline (vlib_main_t * vm,
vlib_frame_t * from_frame, u8 is_ip6)
{
gbp_main_t *gm = &gbp_main;
- u32 n_left_from, next_index, *from, *to_next, thread_index;
+ u32 n_left_from, next_index, *from, *to_next;
u32 n_allow_intra, n_allow_a_bit, n_allow_sclass_1;
- gbp_rule_t *gu;
from = vlib_frame_vector_args (from_frame);
n_left_from = from_frame->n_vectors;
n_allow_intra = n_allow_a_bit = n_allow_sclass_1 = 0;
- thread_index = vm->thread_index;
next_index = node->cached_next_index;
@@ -294,14 +269,13 @@ gbp_policy_dpo_inline (vlib_main_t * vm,
while (n_left_from > 0 && n_left_to_next > 0)
{
const gbp_policy_dpo_t *gpd0;
+ gbp_rule_action_t action0;
+ gbp_contract_error_t err0;
u32 bi0, next0;
gbp_contract_key_t key0;
- gbp_contract_t *gc0;
vlib_buffer_t *b0;
- index_t gci0;
- u8 action0;
+ gbp_rule_t *rule0;
- action0 = 0;
bi0 = from[0];
to_next[0] = bi0;
from += 1;
@@ -312,7 +286,6 @@ gbp_policy_dpo_inline (vlib_main_t * vm,
b0 = vlib_get_buffer (vm, bi0);
- gc0 = NULL;
gpd0 = gbp_policy_dpo_get (vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
vnet_buffer (b0)->ip.adj_index[VLIB_TX] = gpd0->gpd_dpo.dpoi_index;
@@ -333,130 +306,47 @@ gbp_policy_dpo_inline (vlib_main_t * vm,
goto trace;
}
+ /* zero out the key to ensure the pad space is clear */
key0.as_u64 = 0;
- key0.gck_scope = gpd0->gpd_scope;
key0.gck_src = vnet_buffer2 (b0)->gbp.sclass;
- key0.gck_dst = gpd0->gpd_sclass;
- if (SCLASS_INVALID != key0.gck_src)
- {
- if (PREDICT_FALSE (key0.gck_src == key0.gck_dst))
- {
- /*
- * intra-epg allowed
- */
- next0 = gpd0->gpd_dpo.dpoi_next_node;
- vnet_buffer2 (b0)->gbp.flags |= VXLAN_GBP_GPFLAGS_A;
- n_allow_intra++;
- action0 = 0;
- }
- else if (PREDICT_FALSE (key0.gck_src == 1 || key0.gck_dst == 1))
- {
- /*
- * sclass or dclass 1 allowed
- */
- next0 = gpd0->gpd_dpo.dpoi_next_node;
- vnet_buffer2 (b0)->gbp.flags |= VXLAN_GBP_GPFLAGS_A;
- n_allow_sclass_1++;
- action0 = 0;
- }
- else
- {
- gci0 = gbp_contract_find (&key0);
-
- if (INDEX_INVALID != gci0)
- {
- fa_5tuple_opaque_t pkt_5tuple0;
- u32 acl_pos_p0, acl_match_p0;
- u32 rule_match_p0, trace_bitmap0;
- /*
- * tests against the ACL
- */
- gc0 = gbp_contract_get (gci0);
- acl_plugin_fill_5tuple_inline (gm->
- acl_plugin.p_acl_main,
- gc0->gc_lc_index, b0,
- is_ip6,
- /* is_input */ 1,
- /* is_l2_path */ 0,
- &pkt_5tuple0);
- acl_plugin_match_5tuple_inline (gm->
- acl_plugin.p_acl_main,
- gc0->gc_lc_index,
- &pkt_5tuple0, is_ip6,
- &action0, &acl_pos_p0,
- &acl_match_p0,
- &rule_match_p0,
- &trace_bitmap0);
-
- if (action0 > 0)
- {
- vnet_buffer2 (b0)->gbp.flags |= VXLAN_GBP_GPFLAGS_A;
- gu = gbp_rule_get (gc0->gc_rules[rule_match_p0]);
- action0 = gu->gu_action;
-
- switch (gu->gu_action)
- {
- case GBP_RULE_PERMIT:
- next0 = gpd0->gpd_dpo.dpoi_next_node;
- break;
- case GBP_RULE_DENY:
- next0 = GBP_POLICY_DROP;
- break;
- case GBP_RULE_REDIRECT:
- next0 = gbp_rule_l3_redirect (gu, b0, is_ip6);
- break;
- }
- }
- if (next0 == GBP_POLICY_DROP)
- {
- vlib_increment_combined_counter
- (&gbp_contract_drop_counters,
- thread_index,
- gci0, 1, vlib_buffer_length_in_chain (vm, b0));
- b0->error =
- node->errors[GBP_POLICY_DPO_ERROR_DROP_CONTRACT];
- }
- else
- {
- vlib_increment_combined_counter
- (&gbp_contract_permit_counters,
- thread_index,
- gci0, 1, vlib_buffer_length_in_chain (vm, b0));
- }
-
- }
- else
- {
- b0->error =
- node->errors[GBP_POLICY_DPO_ERROR_DROP_NO_CONTRACT];
- }
- }
- }
- else
+ if (SCLASS_INVALID == key0.gck_src)
{
/*
* the src EPG is not set when the packet arrives on an EPG
* uplink interface and we do not need to apply policy
*/
next0 = gpd0->gpd_dpo.dpoi_next_node;
+ goto trace;
}
- trace:
- if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
- {
- gbp_policy_dpo_trace_t *tr;
- tr = vlib_add_trace (vm, node, b0, sizeof (*tr));
- tr->scope = key0.gck_scope;
- tr->sclass = key0.gck_src;
- tr->dclass = key0.gck_dst;
- tr->acl_index = (gc0 ? gc0->gc_acl_index : ~0);
- tr->flags = vnet_buffer2 (b0)->gbp.flags;
- tr->action = action0;
- tr->gci = (gc0 ? gc0 - gbp_contract_pool : INDEX_INVALID);
+ key0.gck_scope = gpd0->gpd_scope;
+ key0.gck_dst = gpd0->gpd_sclass;
+ action0 =
+ gbp_contract_apply (vm, gm, &key0, b0, &rule0, &n_allow_intra,
+ &n_allow_sclass_1, &err0,
+ is_ip6 ? GBP_CONTRACT_APPLY_IP6 :
+ GBP_CONTRACT_APPLY_IP4);
+ switch (action0)
+ {
+ case GBP_RULE_PERMIT:
+ next0 = gpd0->gpd_dpo.dpoi_next_node;
+ vnet_buffer2 (b0)->gbp.flags |= VXLAN_GBP_GPFLAGS_A;
+ break;
+ case GBP_RULE_REDIRECT:
+ next0 = gbp_rule_l3_redirect (rule0, b0, is_ip6);
+ vnet_buffer2 (b0)->gbp.flags |= VXLAN_GBP_GPFLAGS_A;
+ break;
+ case GBP_RULE_DENY:
+ next0 = GBP_POLICY_DROP;
+ b0->error = node->errors[err0];
+ break;
}
+ trace:
+ gbp_policy_trace (vm, node, b0, &key0, (next0 != GBP_POLICY_DROP));
+
vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
n_left_to_next, bi0, next0);
}
@@ -464,33 +354,15 @@ gbp_policy_dpo_inline (vlib_main_t * vm,
}
vlib_node_increment_counter (vm, node->node_index,
- GBP_POLICY_DPO_ERROR_ALLOW_INTRA,
- n_allow_intra);
+ GBP_CONTRACT_ERROR_ALLOW_INTRA, n_allow_intra);
vlib_node_increment_counter (vm, node->node_index,
- GBP_POLICY_DPO_ERROR_ALLOW_A_BIT,
- n_allow_a_bit);
+ GBP_CONTRACT_ERROR_ALLOW_A_BIT, n_allow_a_bit);
vlib_node_increment_counter (vm, node->node_index,
- GBP_POLICY_DPO_ERROR_ALLOW_SCLASS_1,
+ GBP_CONTRACT_ERROR_ALLOW_SCLASS_1,
n_allow_sclass_1);
return from_frame->n_vectors;
}
-static u8 *
-format_gbp_policy_dpo_trace (u8 * s, va_list * args)
-{
- CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
- CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
- gbp_policy_dpo_trace_t *t = va_arg (*args, gbp_policy_dpo_trace_t *);
-
- s =
- format (s,
- "scope:%d sclass:%d dclass:%d gci:%d acl-index:%d flags:%U action:%d",
- t->scope, t->sclass, t->dclass, t->gci, t->acl_index,
- format_vxlan_gbp_header_gpflags, t->flags, t->action);
-
- return s;
-}
-
VLIB_NODE_FN (ip4_gbp_policy_dpo_node) (vlib_main_t * vm,
vlib_node_runtime_t * node,
vlib_frame_t * from_frame)
@@ -509,10 +381,10 @@ VLIB_NODE_FN (ip6_gbp_policy_dpo_node) (vlib_main_t * vm,
VLIB_REGISTER_NODE (ip4_gbp_policy_dpo_node) = {
.name = "ip4-gbp-policy-dpo",
.vector_size = sizeof (u32),
- .format_trace = format_gbp_policy_dpo_trace,
+ .format_trace = format_gbp_policy_trace,
- .n_errors = ARRAY_LEN(gbp_policy_dpo_error_strings),
- .error_strings = gbp_policy_dpo_error_strings,
+ .n_errors = ARRAY_LEN(gbp_contract_error_strings),
+ .error_strings = gbp_contract_error_strings,
.n_next_nodes = GBP_POLICY_N_NEXT,
.next_nodes =
@@ -523,10 +395,10 @@ VLIB_REGISTER_NODE (ip4_gbp_policy_dpo_node) = {
VLIB_REGISTER_NODE (ip6_gbp_policy_dpo_node) = {
.name = "ip6-gbp-policy-dpo",
.vector_size = sizeof (u32),
- .format_trace = format_gbp_policy_dpo_trace,
+ .format_trace = format_gbp_policy_trace,
- .n_errors = ARRAY_LEN(gbp_policy_dpo_error_strings),
- .error_strings = gbp_policy_dpo_error_strings,
+ .n_errors = ARRAY_LEN(gbp_contract_error_strings),
+ .error_strings = gbp_contract_error_strings,
.n_next_nodes = GBP_POLICY_N_NEXT,
.next_nodes =
diff --git a/src/plugins/gbp/gbp_policy_node.c b/src/plugins/gbp/gbp_policy_node.c
index 10f5956033e..fd2e29cb688 100644
--- a/src/plugins/gbp/gbp_policy_node.c
+++ b/src/plugins/gbp/gbp_policy_node.c
@@ -15,51 +15,21 @@
#include <plugins/gbp/gbp.h>
#include <plugins/gbp/gbp_classify.h>
+#include <plugins/gbp/gbp_policy.h>
#include <plugins/gbp/gbp_policy_dpo.h>
#include <plugins/gbp/gbp_bridge_domain.h>
#include <plugins/gbp/gbp_ext_itf.h>
+#include <plugins/gbp/gbp_contract.h>
#include <vnet/vxlan-gbp/vxlan_gbp_packet.h>
#include <vnet/vxlan-gbp/vxlan_gbp.h>
-#define foreach_gbp_policy \
- _(DENY, "deny") \
- _(REFLECTION, "reflection")
-
-typedef enum
-{
-#define _(sym,str) GBP_POLICY_ERROR_##sym,
- foreach_gbp_policy_error
-#undef _
- GBP_POLICY_N_ERROR,
-} gbp_policy_error_t;
-
-static char *gbp_policy_error_strings[] = {
-#define _(sym,string) string,
- foreach_gbp_policy_error
-#undef _
-};
-
typedef enum
{
GBP_POLICY_NEXT_DROP,
GBP_POLICY_N_NEXT,
} gbp_policy_next_t;
-/**
- * per-packet trace data
- */
-typedef struct gbp_policy_trace_t_
-{
- /* per-pkt trace data */
- gbp_scope_t scope;
- sclass_t sclass;
- sclass_t dclass;
- u32 acl_index;
- u32 allowed;
- u32 flags;
-} gbp_policy_trace_t;
-
always_inline dpo_proto_t
ethertype_to_dpo_proto (u16 etype)
{
@@ -98,19 +68,6 @@ 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_always_inline gbp_policy_next_t
gbp_policy_l2_feature_next (gbp_policy_main_t * gpm, vlib_buffer_t * b,
const gbp_policy_type_t type)
@@ -143,13 +100,12 @@ gbp_policy_inline (vlib_main_t * vm,
gbp_main_t *gm = &gbp_main;
gbp_policy_main_t *gpm = &gbp_policy_main;
u32 n_left_from, *from, *to_next;
- u32 next_index, thread_index;
+ u32 next_index;
u32 n_allow_intra, n_allow_a_bit, n_allow_sclass_1;
next_index = 0;
n_left_from = frame->n_vectors;
from = vlib_frame_vector_args (frame);
- thread_index = vm->thread_index;
n_allow_intra = n_allow_a_bit = n_allow_sclass_1 = 0;
while (n_left_from > 0)
@@ -162,14 +118,14 @@ gbp_policy_inline (vlib_main_t * vm,
{
const ethernet_header_t *h0;
const gbp_endpoint_t *ge0;
- const gbp_contract_t *gc0;
+ gbp_rule_action_t action0;
+ gbp_contract_error_t err0;
gbp_policy_next_t next0;
gbp_contract_key_t key0;
u32 bi0, sw_if_index0;
vlib_buffer_t *b0;
- index_t gci0;
+ gbp_rule_t *rule0;
- gc0 = NULL;
next0 = GBP_POLICY_NEXT_DROP;
bi0 = from[0];
to_next[0] = bi0;
@@ -182,9 +138,6 @@ gbp_policy_inline (vlib_main_t * vm,
h0 = vlib_buffer_get_current (b0);
sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_TX];
- /* zero out the key to ensure the pad space is clear */
- key0.as_u64 = 0;
-
/*
* Reflection check; in and out on an ivxlan tunnel
*/
@@ -210,6 +163,8 @@ gbp_policy_inline (vlib_main_t * vm,
* determine the src and dst EPG
*/
+ /* zero out the key to ensure the pad space is clear */
+ key0.as_u64 = 0;
key0.gck_dst = SCLASS_INVALID;
if (GBP_POLICY_LPM == type)
@@ -244,174 +199,48 @@ gbp_policy_inline (vlib_main_t * vm,
if (SCLASS_INVALID == key0.gck_dst)
{
/* If you cannot determine the destination EP then drop */
- b0->error = node->errors[GBP_POLICY_ERROR_DROP_NO_DCLASS];
+ b0->error = node->errors[GBP_CONTRACT_ERROR_DROP_NO_DCLASS];
goto trace;
}
- key0.gck_src = vnet_buffer2 (b0)->gbp.sclass;
- if (SCLASS_INVALID != key0.gck_src)
- {
- if (PREDICT_FALSE (key0.gck_src == key0.gck_dst))
- {
- /*
- * intra-epg allowed
- */
- next0 = gbp_policy_l2_feature_next (gpm, b0, type);
- vnet_buffer2 (b0)->gbp.flags |= VXLAN_GBP_GPFLAGS_A;
- n_allow_intra++;
- }
- else if (PREDICT_FALSE (key0.gck_src == 1 || key0.gck_dst == 1))
- {
- /*
- * sclass or dclass 1 allowed
- */
- next0 = gbp_policy_l2_feature_next (gpm, b0, type);
- vnet_buffer2 (b0)->gbp.flags |= VXLAN_GBP_GPFLAGS_A;
- n_allow_sclass_1++;
- }
- else
- {
- key0.gck_scope =
- gbp_bridge_domain_get_scope (vnet_buffer (b0)->
- l2.bd_index);
- gci0 = gbp_contract_find (&key0);
-
- if (INDEX_INVALID != gci0)
- {
- u32 rule_match_p0, trace_bitmap0;
- fa_5tuple_opaque_t pkt_5tuple0;
- u32 acl_pos_p0, acl_match_p0;
- u8 is_ip60, l2_len0, action0;
- const gbp_rule_t *gu;
- u16 ether_type0;
- const u8 *h0;
-
- vlib_prefetch_combined_counter
- (&gbp_contract_drop_counters, thread_index, gci0);
- vlib_prefetch_combined_counter
- (&gbp_contract_permit_counters, thread_index, gci0);
-
- action0 = 0;
- gc0 = gbp_contract_get (gci0);
- l2_len0 = vnet_buffer (b0)->l2.l2_len;
- h0 = vlib_buffer_get_current (b0);
-
- ether_type0 = *(u16 *) (h0 + l2_len0 - 2);
-
- if (!gbp_policy_is_ethertype_allowed (gc0, ether_type0))
- {
- /*
- * black list model so drop
- */
- b0->error =
- node->errors[GBP_POLICY_ERROR_DROP_ETHER_TYPE];
-
- vlib_increment_combined_counter
- (&gbp_contract_drop_counters,
- thread_index,
- gci0, 1, vlib_buffer_length_in_chain (vm, b0));
-
- goto trace;
- }
-
- 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)
- {
- 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 =
- gbp_policy_l2_feature_next (gpm, b0,
- type);
- break;
- case GBP_RULE_DENY:
- next0 = GBP_POLICY_NEXT_DROP;
- break;
- case GBP_RULE_REDIRECT:
- next0 = gbp_rule_l2_redirect (gu, b0);
- break;
- }
- }
- }
- if (next0 == GBP_POLICY_NEXT_DROP)
- {
- vlib_increment_combined_counter
- (&gbp_contract_drop_counters,
- thread_index,
- gci0, 1, vlib_buffer_length_in_chain (vm, b0));
- b0->error =
- node->errors[GBP_POLICY_ERROR_DROP_CONTRACT];
- }
- else
- {
- vlib_increment_combined_counter
- (&gbp_contract_permit_counters,
- thread_index,
- gci0, 1, vlib_buffer_length_in_chain (vm, b0));
- }
- }
- else
- {
- b0->error =
- node->errors[GBP_POLICY_ERROR_DROP_NO_CONTRACT];
- }
- }
- }
- else
+ key0.gck_src = vnet_buffer2 (b0)->gbp.sclass;
+ if (SCLASS_INVALID == key0.gck_src)
{
/*
* the src EPG is not set when the packet arrives on an EPG
* uplink interface and we do not need to apply policy
*/
next0 = gbp_policy_l2_feature_next (gpm, b0, type);
+ goto trace;
}
- trace:
- if (PREDICT_FALSE ((b0->flags & VLIB_BUFFER_IS_TRACED)))
+ key0.gck_scope =
+ gbp_bridge_domain_get_scope (vnet_buffer (b0)->l2.bd_index);
+
+ action0 =
+ gbp_contract_apply (vm, gm, &key0, b0, &rule0, &n_allow_intra,
+ &n_allow_sclass_1, &err0,
+ GBP_CONTRACT_APPLY_L2);
+ switch (action0)
{
- gbp_policy_trace_t *t =
- vlib_add_trace (vm, node, b0, sizeof (*t));
- t->sclass = key0.gck_src;
- t->dclass = key0.gck_dst;
- t->scope = key0.gck_scope;
- t->acl_index = (gc0 ? gc0->gc_acl_index : ~0);
- t->allowed = (next0 != GBP_POLICY_NEXT_DROP);
- t->flags = vnet_buffer2 (b0)->gbp.flags;
+ case GBP_RULE_PERMIT:
+ next0 = gbp_policy_l2_feature_next (gpm, b0, type);
+ vnet_buffer2 (b0)->gbp.flags |= VXLAN_GBP_GPFLAGS_A;
+ break;
+ case GBP_RULE_REDIRECT:
+ next0 = gbp_rule_l2_redirect (rule0, b0);
+ vnet_buffer2 (b0)->gbp.flags |= VXLAN_GBP_GPFLAGS_A;
+ break;
+ case GBP_RULE_DENY:
+ next0 = GBP_POLICY_NEXT_DROP;
+ b0->error = node->errors[err0];
+ break;
}
+ trace:
+ gbp_policy_trace (vm, node, b0, &key0,
+ (next0 != GBP_POLICY_NEXT_DROP));
+
/* verify speculative enqueue, maybe switch current next frame */
vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
to_next, n_left_to_next,
@@ -422,11 +251,11 @@ gbp_policy_inline (vlib_main_t * vm,
}
vlib_node_increment_counter (vm, node->node_index,
- GBP_POLICY_ERROR_ALLOW_INTRA, n_allow_intra);
+ GBP_CONTRACT_ERROR_ALLOW_INTRA, n_allow_intra);
vlib_node_increment_counter (vm, node->node_index,
- GBP_POLICY_ERROR_ALLOW_A_BIT, n_allow_a_bit);
+ GBP_CONTRACT_ERROR_ALLOW_A_BIT, n_allow_a_bit);
vlib_node_increment_counter (vm, node->node_index,
- GBP_POLICY_ERROR_ALLOW_SCLASS_1,
+ GBP_CONTRACT_ERROR_ALLOW_SCLASS_1,
n_allow_sclass_1);
return frame->n_vectors;
@@ -453,22 +282,6 @@ VLIB_NODE_FN (gbp_policy_lpm_node) (vlib_main_t * vm,
return (gbp_policy_inline (vm, node, frame, GBP_POLICY_LPM));
}
-/* packet trace format function */
-static u8 *
-format_gbp_policy_trace (u8 * s, va_list * args)
-{
- CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
- CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
- gbp_policy_trace_t *t = va_arg (*args, gbp_policy_trace_t *);
-
- s =
- format (s, "scope:%d sclass:%d, dclass:%d, acl:%d allowed:%d flags:%U",
- t->scope, t->sclass, t->dclass, t->acl_index, t->allowed,
- format_vxlan_gbp_header_gpflags, t->flags);
-
- return s;
-}
-
/* *INDENT-OFF* */
VLIB_REGISTER_NODE (gbp_policy_port_node) = {
.name = "gbp-policy-port",
@@ -476,8 +289,8 @@ VLIB_REGISTER_NODE (gbp_policy_port_node) = {
.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_errors = ARRAY_LEN(gbp_contract_error_strings),
+ .error_strings = gbp_contract_error_strings,
.n_next_nodes = GBP_POLICY_N_NEXT,
.next_nodes = {
@@ -491,8 +304,8 @@ VLIB_REGISTER_NODE (gbp_policy_mac_node) = {
.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_errors = ARRAY_LEN(gbp_contract_error_strings),
+ .error_strings = gbp_contract_error_strings,
.n_next_nodes = GBP_POLICY_N_NEXT,
.next_nodes = {
@@ -506,8 +319,8 @@ VLIB_REGISTER_NODE (gbp_policy_lpm_node) = {
.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_errors = ARRAY_LEN(gbp_contract_error_strings),
+ .error_strings = gbp_contract_error_strings,
.n_next_nodes = GBP_POLICY_N_NEXT,
.next_nodes = {