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-rw-r--r--src/plugins/gbp/gbp.api2
-rw-r--r--src/plugins/gbp/gbp_api.c26
-rw-r--r--src/plugins/gbp/gbp_contract.c17
-rw-r--r--src/plugins/gbp/gbp_contract.h8
-rw-r--r--src/plugins/gbp/gbp_policy.c131
5 files changed, 129 insertions, 55 deletions
diff --git a/src/plugins/gbp/gbp.api b/src/plugins/gbp/gbp.api
index bf7c167a42f..e96cb508387 100644
--- a/src/plugins/gbp/gbp.api
+++ b/src/plugins/gbp/gbp.api
@@ -295,6 +295,8 @@ typedef gbp_contract
u32 acl_index;
u8 n_rules;
vl_api_gbp_rule_t rules[n_rules];
+ u8 n_ether_types;
+ u16 allowed_ethertypes[n_ether_types];
};
autoreply define gbp_contract_add_del
diff --git a/src/plugins/gbp/gbp_api.c b/src/plugins/gbp/gbp_api.c
index 74355d1c033..8ea5a0e6d0a 100644
--- a/src/plugins/gbp/gbp_api.c
+++ b/src/plugins/gbp/gbp_api.c
@@ -924,8 +924,11 @@ static void
vl_api_gbp_contract_add_del_t_handler (vl_api_gbp_contract_add_del_t * mp)
{
vl_api_gbp_contract_add_del_reply_t *rmp;
+ u16 *allowed_ethertypes;
index_t *rules;
- int rv = 0;
+ int ii, rv = 0;
+ u8 *data, n_et;
+ u16 *et;
if (mp->is_add)
{
@@ -934,9 +937,28 @@ vl_api_gbp_contract_add_del_t_handler (vl_api_gbp_contract_add_del_t * mp)
if (0 != rv)
goto out;
+ allowed_ethertypes = NULL;
+
+ /*
+ * move past the variable legnth array of rules to get to the
+ * allowed ether types
+ */
+ data = (((u8 *) & mp->contract.n_ether_types) +
+ (sizeof (mp->contract.rules[0]) * mp->contract.n_rules));
+ n_et = *data;
+ et = (u16 *) (++data);
+ vec_validate (allowed_ethertypes, n_et - 1);
+
+ for (ii = 0; ii < n_et; ii++)
+ {
+ /* leave the ether types in network order */
+ allowed_ethertypes[ii] = et[ii];
+ }
+
rv = gbp_contract_update (ntohs (mp->contract.src_epg),
ntohs (mp->contract.dst_epg),
- ntohl (mp->contract.acl_index), rules);
+ ntohl (mp->contract.acl_index),
+ rules, allowed_ethertypes);
}
else
rv = gbp_contract_delete (ntohs (mp->contract.src_epg),
diff --git a/src/plugins/gbp/gbp_contract.c b/src/plugins/gbp/gbp_contract.c
index ee12a760f4b..f7b8b6474c5 100644
--- a/src/plugins/gbp/gbp_contract.c
+++ b/src/plugins/gbp/gbp_contract.c
@@ -434,7 +434,8 @@ gbp_contract_mk_lbs (index_t * guis)
int
gbp_contract_update (epg_id_t src_epg,
- epg_id_t dst_epg, u32 acl_index, index_t * rules)
+ epg_id_t dst_epg,
+ u32 acl_index, index_t * rules, u16 * allowed_ethertypes)
{
gbp_main_t *gm = &gbp_main;
u32 *acl_vec = NULL;
@@ -462,6 +463,7 @@ gbp_contract_update (epg_id_t src_epg,
gbp_contract_rules_free (gc->gc_rules);
gbp_main.acl_plugin.put_lookup_context_index (gc->gc_lc_index);
gc->gc_rules = NULL;
+ vec_free (gc->gc_allowed_ethertypes);
}
else
{
@@ -474,6 +476,7 @@ gbp_contract_update (epg_id_t src_epg,
GBP_CONTRACT_DBG ("update: %U", format_gbp_contract, gci);
gc->gc_rules = rules;
+ gc->gc_allowed_ethertypes = allowed_ethertypes;
gbp_contract_resolve (gc->gc_rules);
gbp_contract_mk_lbs (gc->gc_rules);
@@ -506,6 +509,7 @@ gbp_contract_delete (epg_id_t src_epg, epg_id_t dst_epg)
gbp_contract_rules_free (gc->gc_rules);
gbp_main.acl_plugin.put_lookup_context_index (gc->gc_lc_index);
+ vec_free (gc->gc_allowed_ethertypes);
hash_unset (gbp_contract_db.gc_hash, key.as_u32);
pool_put (gbp_contract_pool, gc);
@@ -561,7 +565,7 @@ gbp_contract_cli (vlib_main_t * vm,
if (add)
{
- gbp_contract_update (src_epg_id, dst_epg_id, acl_index, NULL);
+ gbp_contract_update (src_epg_id, dst_epg_id, acl_index, NULL, NULL);
}
else
{
@@ -604,6 +608,7 @@ format_gbp_contract (u8 * s, va_list * args)
index_t gci = va_arg (*args, index_t);
gbp_contract_t *gc;
index_t *gui;
+ u16 *et;
gc = gbp_contract_get (gci);
@@ -615,6 +620,14 @@ format_gbp_contract (u8 * s, va_list * args)
s = format (s, "\n %d: %U", *gui, format_gbp_rule, *gui);
}
+ s = format (s, "\n allowed-ethertypes:[");
+ vec_foreach (et, gc->gc_allowed_ethertypes)
+ {
+ int host_et = clib_net_to_host_u16 (*et);
+ s = format (s, "0x%x, ", host_et);
+ }
+ s = format (s, "]");
+
return (s);
}
diff --git a/src/plugins/gbp/gbp_contract.h b/src/plugins/gbp/gbp_contract.h
index bd7d8339e21..876c10f3702 100644
--- a/src/plugins/gbp/gbp_contract.h
+++ b/src/plugins/gbp/gbp_contract.h
@@ -120,6 +120,11 @@ typedef struct gbp_contract_t_
* The ACL to apply for packets from the source to the destination EPG
*/
index_t *gc_rules;
+
+ /**
+ * An ethertype whitelist
+ */
+ u16 *gc_allowed_ethertypes;
} gbp_contract_t;
/**
@@ -135,7 +140,8 @@ typedef struct gbp_contract_db_t_
extern int gbp_contract_update (epg_id_t src_epg,
epg_id_t dst_epg,
- u32 acl_index, index_t * rules);
+ u32 acl_index,
+ index_t * rules, u16 * allowed_ethertypes);
extern int gbp_contract_delete (epg_id_t src_epg, epg_id_t dst_epg);
extern index_t gbp_rule_alloc (gbp_rule_action_t action,
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;
+ }
}
}
}