typeonly define gbp_endpoint
{
u32 sw_if_index;
- u32 epg_id;
+ u16 epg_id;
u8 is_ip6;
u8 address[16];
u8 mac[6];
typeonly define gbp_endpoint_group
{
- u32 epg_id;
+ u16 epg_id;
u32 bd_id;
u32 ip4_table_id;
u32 ip6_table_id;
typeonly define gbp_recirc
{
- u32 epg_id;
u32 sw_if_index;
+ u16 epg_id;
u8 is_ext;
};
{
u32 table_id;
u32 sw_if_index;
- u32 epg_id;
+ u16 epg_id;
u8 is_ip6;
u8 is_internal;
u8 address_length;
typeonly define gbp_contract
{
- u32 src_epg;
- u32 dst_epg;
+ u16 src_epg;
+ u16 dst_epg;
u32 acl_index;
};
if (mp->is_add)
{
rv =
- gbp_endpoint_update (sw_if_index, &ip, ntohl (mp->endpoint.epg_id));
+ gbp_endpoint_update (sw_if_index, &ip, ntohs (mp->endpoint.epg_id));
}
else
{
&gbpe->ge_key->gek_ip.ip4,
sizeof (gbpe->ge_key->gek_ip.ip4));
- mp->endpoint.epg_id = ntohl (gbpe->ge_epg_id);
+ mp->endpoint.epg_id = ntohs (gbpe->ge_epg_id);
vl_api_send_msg (ctx->reg, (u8 *) mp);
if (mp->is_add)
{
- rv = gbp_endpoint_group_add (ntohl (mp->epg.epg_id),
+ rv = gbp_endpoint_group_add (ntohs (mp->epg.epg_id),
ntohl (mp->epg.bd_id),
ntohl (mp->epg.ip4_table_id),
ntohl (mp->epg.ip6_table_id),
}
else
{
- gbp_endpoint_group_delete (ntohl (mp->epg.epg_id));
+ gbp_endpoint_group_delete (ntohs (mp->epg.epg_id));
}
BAD_SW_IF_INDEX_LABEL;
rv = gbp_subnet_add_del (ntohl (mp->subnet.table_id),
&pfx,
ntohl (mp->subnet.sw_if_index),
- ntohl (mp->subnet.epg_id),
+ ntohs (mp->subnet.epg_id),
mp->is_add, mp->subnet.is_internal);
REPLY_MACRO (VL_API_GBP_SUBNET_ADD_DEL_REPLY + GBP_MSG_BASE);
mp->subnet.is_internal = is_internal;
mp->subnet.sw_if_index = ntohl (sw_if_index);
- mp->subnet.epg_id = ntohl (epg);
+ mp->subnet.epg_id = ntohs (epg);
mp->subnet.is_ip6 = (pfx->fp_proto == FIB_PROTOCOL_IP6);
mp->subnet.address_length = pfx->fp_len;
mp->subnet.table_id = ntohl (table_id);
mp->context = ctx->context;
mp->epg.uplink_sw_if_index = ntohl (gepg->gepg_uplink_sw_if_index);
- mp->epg.epg_id = ntohl (gepg->gepg_id);
+ mp->epg.epg_id = ntohs (gepg->gepg_id);
mp->epg.bd_id = ntohl (gepg->gepg_bd);
mp->epg.ip4_table_id = ntohl (gepg->gepg_rd[FIB_PROTOCOL_IP4]);
mp->epg.ip6_table_id = ntohl (gepg->gepg_rd[FIB_PROTOCOL_IP6]);
if (mp->is_add)
gbp_recirc_add (sw_if_index,
- ntohl (mp->recirc.epg_id), mp->recirc.is_ext);
+ ntohs (mp->recirc.epg_id), mp->recirc.is_ext);
else
gbp_recirc_delete (sw_if_index);
mp->_vl_msg_id = ntohs (VL_API_GBP_RECIRC_DETAILS + GBP_MSG_BASE);
mp->context = ctx->context;
- mp->recirc.epg_id = ntohl (gr->gr_epg);
+ mp->recirc.epg_id = ntohs (gr->gr_epg);
mp->recirc.sw_if_index = ntohl (gr->gr_sw_if_index);
mp->recirc.is_ext = ntohl (gr->gr_is_ext);
int rv = 0;
if (mp->is_add)
- gbp_contract_update (ntohl (mp->contract.src_epg),
- ntohl (mp->contract.dst_epg),
+ gbp_contract_update (ntohs (mp->contract.src_epg),
+ ntohs (mp->contract.dst_epg),
ntohl (mp->contract.acl_index));
else
- gbp_contract_delete (ntohl (mp->contract.src_epg),
- ntohl (mp->contract.dst_epg));
+ gbp_contract_delete (ntohs (mp->contract.src_epg),
+ ntohs (mp->contract.dst_epg));
REPLY_MACRO (VL_API_GBP_CONTRACT_ADD_DEL_REPLY + GBP_MSG_BASE);
}
mp->_vl_msg_id = ntohs (VL_API_GBP_CONTRACT_DETAILS + GBP_MSG_BASE);
mp->context = ctx->context;
- mp->contract.src_epg = ntohl (gbpc->gc_key.gck_src);
- mp->contract.dst_epg = ntohl (gbpc->gc_key.gck_dst);
+ mp->contract.src_epg = ntohs (gbpc->gc_key.gck_src);
+ mp->contract.dst_epg = ntohs (gbpc->gc_key.gck_dst);
mp->contract.acl_index = ntohl (gbpc->gc_value.gc_acl_index);
vl_api_send_msg (ctx->reg, (u8 *) mp);
if (GBP_SRC_CLASSIFY_NULL == type)
{
- src_epg = ~0;
+ src_epg = EPG_INVALID;
next0 =
vnet_l2_feature_next (b0, gscm->l2_input_feat_next[type],
L2INPUT_FEAT_GBP_NULL_CLASSIFY);
gm->acl_plugin.register_user_module ("GBP ACL", "src-epg", "dst-epg");
}
- p = hash_get (gbp_contract_db.gc_hash, key.as_u64);
+ p = hash_get (gbp_contract_db.gc_hash, key.as_u32);
if (p != NULL)
{
value.as_u64 = p[0];
gm->acl_plugin.get_lookup_context_index (gm->gbp_acl_user_id, src_epg,
dst_epg);
value.gc_acl_index = acl_index;
- hash_set (gbp_contract_db.gc_hash, key.as_u64, value.as_u64);
+ hash_set (gbp_contract_db.gc_hash, key.as_u32, value.as_u64);
}
if (value.gc_lc_index == ~0)
.gck_dst = dst_epg,
};
- p = hash_get (gbp_contract_db.gc_hash, key.as_u64);
+ p = hash_get (gbp_contract_db.gc_hash, key.as_u32);
if (p != NULL)
{
value.as_u64 = p[0];
gm->acl_plugin.put_lookup_context_index (value.gc_lc_index);
}
- hash_unset (gbp_contract_db.gc_hash, key.as_u64);
+ hash_unset (gbp_contract_db.gc_hash, key.as_u32);
}
void
gbp_contract_value_t value;
/* *INDENT-OFF* */
- hash_foreach(key.as_u64, value.as_u64, gbp_contract_db.gc_hash,
+ hash_foreach(key.as_u32, value.as_u64, gbp_contract_db.gc_hash,
({
gbp_contract_t gbpc = {
.gc_key = key,
vlib_cli_output (vm, "Contracts:");
/* *INDENT-OFF* */
- hash_foreach (key.as_u64, value.as_u64, gbp_contract_db.gc_hash,
+ hash_foreach (key.as_u32, value.as_u64, gbp_contract_db.gc_hash,
{
vlib_cli_output (vm, " {%d,%d} -> %d", key.gck_src,
key.gck_dst, value.gc_acl_index);
epg_id_t gck_src;
epg_id_t gck_dst;
};
- u64 as_u64;
+ u32 as_u32;
};
} gbp_contract_key_t;
{
uword *p;
- p = hash_get (gbp_contract_db.gc_hash, key->as_u64);
+ p = hash_get (gbp_contract_db.gc_hash, key->as_u32);
if (NULL != p)
return (p[0]);
key0.gck_dst = gbp_port_to_epg (sw_if_index0);
key0.gck_src = vnet_buffer2 (b0)->gbp.src_epg;
- if (~0 != key0.gck_src)
+ if (EPG_INVALID != key0.gck_src)
{
if (PREDICT_FALSE (key0.gck_src == key0.gck_dst))
{
key0.gck_src = vnet_buffer2 (b0)->gbp.src_epg;
key0.gck_dst = gpd0->gpd_epg;
- if (~0 != key0.gck_src)
+ if (EPG_INVALID != key0.gck_src)
{
if (PREDICT_FALSE (key0.gck_src == key0.gck_dst))
{
/* *INDENT-OFF* */
ctx->cb (table_id, pfx,
~0, // sw_if_index
- ~0, // epg
+ EPG_INVALID, // epg
1, // is_internal
ctx->ctx);
/* *INDENT-ON* */
#include <vnet/vnet.h>
-typedef u32 epg_id_t;
-#define EPG_INVALID (~0)
+typedef u16 epg_id_t;
+#define EPG_INVALID ((u16)~0)
#endif
list(APPEND VNET_API_FILES mpls/mpls.api)
+##############################################################################
+# Tunnel protocol: vxlan-gbp
+##############################################################################
+list(APPEND VNET_SOURCES
+ vxlan-gbp/decap.c
+ vxlan-gbp/encap.c
+ vxlan-gbp/vxlan_gbp_api.c
+ vxlan-gbp/vxlan_gbp.c
+)
+
+list(APPEND VNET_HEADERS
+ vxlan-gbp/vxlan_gbp.h
+ vxlan-gbp/vxlan_gbp_packet.h
+ vxlan-gbp/vxlan_gbp_error.def
+)
+
+list(APPEND VNET_API_FILES vxlan-gbp/vxlan_gbp.api)
+
##############################################################################
# Tunnel protocol: vxlan-gpe
##############################################################################
/* Group Based Policy */
struct
{
- u32 src_epg;
+ u8 __unused;
+ u8 flags;
+ u16 src_epg;
} gbp;
union
FIB_NODE_TYPE_UDP_ENCAP,
FIB_NODE_TYPE_BIER_FMASK,
FIB_NODE_TYPE_BIER_ENTRY,
+ FIB_NODE_TYPE_VXLAN_GBP_TUNNEL,
/**
* Marker. New types before this one. leave the test last.
*/
[FIB_NODE_TYPE_UDP_ENCAP] = "udp-encap", \
[FIB_NODE_TYPE_BIER_FMASK] = "bier-fmask", \
[FIB_NODE_TYPE_BIER_ENTRY] = "bier-entry", \
+ [FIB_NODE_TYPE_VXLAN_GBP_TUNNEL] = "vxlan-gbp-tunnel" \
}
/**
MFIB_SOURCE_RR,
MFIB_SOURCE_GENEVE,
MFIB_SOURCE_IGMP,
+ MFIB_SOURCE_VXLAN_GBP,
MFIB_SOURCE_DEFAULT_ROUTE,
} mfib_source_t;
[MFIB_SOURCE_RR] = "Recursive-resolution", \
[MFIB_SOURCE_GENEVE] = "Geneve", \
[MFIB_SOURCE_IGMP] = "IGMP", \
+ [MFIB_SOURCE_VXLAN_GBP] = "VXLAN-GBP", \
[MFIB_SOURCE_DEFAULT_ROUTE] = "Default Route", \
}
_ (4739, ipfix) \
_ (4789, vxlan) \
_ (4789, vxlan6) \
+_ (48879, vxlan_gbp) \
_ (4790, VXLAN_GPE) \
_ (6633, vpath_3) \
_ (6081, geneve) \
_ (3785, bfd_echo6) \
_ (4341, lisp_gpe6) \
_ (4342, lisp_cp6) \
+_ (48879, vxlan6_gbp) \
_ (4790, VXLAN6_GPE) \
_ (6633, vpath6_3) \
_ (6081, geneve6) \
#include <vnet/dhcp/dhcp6_pd_client_cp.api.h>
#include <vnet/dhcp/dhcp6_ia_na_client_cp.api.h>
#include <vnet/devices/pipe/pipe.api.h>
+#include <vnet/vxlan-gbp/vxlan_gbp.api.h>
/*
* fd.io coding-style-patch-verification: ON
--- /dev/null
+/*
+ * decap.c: vxlan gbp tunnel decap packet processing
+ *
+ * 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.
+ */
+
+#include <vlib/vlib.h>
+#include <vnet/pg/pg.h>
+#include <vnet/vxlan-gbp/vxlan_gbp.h>
+
+vlib_node_registration_t vxlan4_gbp_input_node;
+vlib_node_registration_t vxlan6_gbp_input_node;
+
+typedef struct
+{
+ u32 next_index;
+ u32 tunnel_index;
+ u32 error;
+ u32 vni;
+ u16 sclass;
+} vxlan_gbp_rx_trace_t;
+
+static u8 *
+format_vxlan_gbp_rx_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 *);
+ vxlan_gbp_rx_trace_t *t = va_arg (*args, vxlan_gbp_rx_trace_t *);
+
+ if (t->tunnel_index == ~0)
+ return format (s,
+ "VXLAN_GBP decap error - tunnel for vni %d does not exist",
+ t->vni);
+ return format (s,
+ "VXLAN_GBP decap from vxlan_gbp_tunnel%d vni %d sclass %d"
+ " next %d error %d",
+ t->tunnel_index, t->vni, t->sclass, t->next_index, t->error);
+}
+
+always_inline u32
+buf_fib_index (vlib_buffer_t * b, u32 is_ip4)
+{
+ u32 sw_if_index = vnet_buffer (b)->sw_if_index[VLIB_TX];
+ if (sw_if_index != (u32) ~ 0)
+ return sw_if_index;
+
+ u32 *fib_index_by_sw_if_index = is_ip4 ?
+ ip4_main.fib_index_by_sw_if_index : ip6_main.fib_index_by_sw_if_index;
+ sw_if_index = vnet_buffer (b)->sw_if_index[VLIB_RX];
+
+ return vec_elt (fib_index_by_sw_if_index, sw_if_index);
+}
+
+typedef vxlan4_gbp_tunnel_key_t last_tunnel_cache4;
+
+always_inline vxlan_gbp_tunnel_t *
+vxlan4_gbp_find_tunnel (vxlan_gbp_main_t * vxm, last_tunnel_cache4 * cache,
+ u32 fib_index, ip4_header_t * ip4_0,
+ vxlan_gbp_header_t * vxlan_gbp0,
+ vxlan_gbp_tunnel_t ** stats_t0)
+{
+ /* Make sure VXLAN_GBP tunnel exist according to packet SIP and VNI */
+ vxlan4_gbp_tunnel_key_t key4;
+ key4.key[1] = ((u64) fib_index << 32) | vxlan_gbp0->vni_reserved;
+
+ if (PREDICT_FALSE (key4.key[1] != cache->key[1] ||
+ ip4_0->src_address.as_u32 != (u32) cache->key[0]))
+ {
+ key4.key[0] = ip4_0->src_address.as_u32;
+ int rv = clib_bihash_search_inline_16_8 (&vxm->vxlan4_gbp_tunnel_by_key,
+ &key4);
+ if (PREDICT_FALSE (rv != 0))
+ return 0;
+
+ *cache = key4;
+ }
+ vxlan_gbp_tunnel_t *t0 = pool_elt_at_index (vxm->tunnels, cache->value);
+
+ /* Validate VXLAN_GBP tunnel SIP against packet DIP */
+ if (PREDICT_TRUE (ip4_0->dst_address.as_u32 == t0->src.ip4.as_u32))
+ *stats_t0 = t0;
+ else
+ {
+ /* try multicast */
+ if (PREDICT_TRUE (!ip4_address_is_multicast (&ip4_0->dst_address)))
+ return 0;
+
+ key4.key[0] = ip4_0->dst_address.as_u32;
+ /* Make sure mcast VXLAN_GBP tunnel exist by packet DIP and VNI */
+ int rv = clib_bihash_search_inline_16_8 (&vxm->vxlan4_gbp_tunnel_by_key,
+ &key4);
+ if (PREDICT_FALSE (rv != 0))
+ return 0;
+
+ *stats_t0 = pool_elt_at_index (vxm->tunnels, key4.value);
+ }
+
+ return t0;
+}
+
+typedef vxlan6_gbp_tunnel_key_t last_tunnel_cache6;
+
+always_inline vxlan_gbp_tunnel_t *
+vxlan6_gbp_find_tunnel (vxlan_gbp_main_t * vxm, last_tunnel_cache6 * cache,
+ u32 fib_index, ip6_header_t * ip6_0,
+ vxlan_gbp_header_t * vxlan_gbp0,
+ vxlan_gbp_tunnel_t ** stats_t0)
+{
+ /* Make sure VXLAN_GBP tunnel exist according to packet SIP and VNI */
+ vxlan6_gbp_tunnel_key_t key6 = {
+ .key = {
+ [0] = ip6_0->src_address.as_u64[0],
+ [1] = ip6_0->src_address.as_u64[1],
+ [2] = (((u64) fib_index) << 32) | vxlan_gbp0->vni_reserved,
+ }
+ };
+
+ if (PREDICT_FALSE
+ (clib_bihash_key_compare_24_8 (key6.key, cache->key) == 0))
+ {
+ int rv = clib_bihash_search_inline_24_8 (&vxm->vxlan6_gbp_tunnel_by_key,
+ &key6);
+ if (PREDICT_FALSE (rv != 0))
+ return 0;
+
+ *cache = key6;
+ }
+ vxlan_gbp_tunnel_t *t0 = pool_elt_at_index (vxm->tunnels, cache->value);
+
+ /* Validate VXLAN_GBP tunnel SIP against packet DIP */
+ if (PREDICT_TRUE (ip6_address_is_equal (&ip6_0->dst_address, &t0->src.ip6)))
+ *stats_t0 = t0;
+ else
+ {
+ /* try multicast */
+ if (PREDICT_TRUE (!ip6_address_is_multicast (&ip6_0->dst_address)))
+ return 0;
+
+ /* Make sure mcast VXLAN_GBP tunnel exist by packet DIP and VNI */
+ key6.key[0] = ip6_0->dst_address.as_u64[0];
+ key6.key[1] = ip6_0->dst_address.as_u64[1];
+ int rv = clib_bihash_search_inline_24_8 (&vxm->vxlan6_gbp_tunnel_by_key,
+ &key6);
+ if (PREDICT_FALSE (rv != 0))
+ return 0;
+
+ *stats_t0 = pool_elt_at_index (vxm->tunnels, key6.value);
+ }
+
+ return t0;
+}
+
+always_inline uword
+vxlan_gbp_input (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * from_frame, u32 is_ip4)
+{
+ vxlan_gbp_main_t *vxm = &vxlan_gbp_main;
+ vnet_main_t *vnm = vxm->vnet_main;
+ vnet_interface_main_t *im = &vnm->interface_main;
+ vlib_combined_counter_main_t *rx_counter =
+ im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_RX;
+ vlib_combined_counter_main_t *drop_counter =
+ im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_DROP;
+ last_tunnel_cache4 last4;
+ last_tunnel_cache6 last6;
+ u32 pkts_decapsulated = 0;
+ u32 thread_index = vlib_get_thread_index ();
+
+ if (is_ip4)
+ memset (&last4, 0xff, sizeof last4);
+ else
+ memset (&last6, 0xff, sizeof last6);
+
+ u32 next_index = node->cached_next_index;
+
+ u32 *from = vlib_frame_vector_args (from_frame);
+ u32 n_left_from = from_frame->n_vectors;
+
+ while (n_left_from > 0)
+ {
+ u32 *to_next, n_left_to_next;
+ vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
+
+ while (n_left_from >= 4 && n_left_to_next >= 2)
+ {
+ /* Prefetch next iteration. */
+ {
+ vlib_buffer_t *p2, *p3;
+
+ p2 = vlib_get_buffer (vm, from[2]);
+ p3 = vlib_get_buffer (vm, from[3]);
+
+ vlib_prefetch_buffer_header (p2, LOAD);
+ vlib_prefetch_buffer_header (p3, LOAD);
+
+ CLIB_PREFETCH (p2->data, 2 * CLIB_CACHE_LINE_BYTES, LOAD);
+ CLIB_PREFETCH (p3->data, 2 * CLIB_CACHE_LINE_BYTES, LOAD);
+ }
+
+ u32 bi0 = to_next[0] = from[0];
+ u32 bi1 = to_next[1] = from[1];
+ from += 2;
+ to_next += 2;
+ n_left_to_next -= 2;
+ n_left_from -= 2;
+
+ vlib_buffer_t *b0, *b1;
+ b0 = vlib_get_buffer (vm, bi0);
+ b1 = vlib_get_buffer (vm, bi1);
+
+ /* udp leaves current_data pointing at the vxlan_gbp header */
+ void *cur0 = vlib_buffer_get_current (b0);
+ void *cur1 = vlib_buffer_get_current (b1);
+ vxlan_gbp_header_t *vxlan_gbp0 = cur0;
+ vxlan_gbp_header_t *vxlan_gbp1 = cur1;
+
+ ip4_header_t *ip4_0, *ip4_1;
+ ip6_header_t *ip6_0, *ip6_1;
+ if (is_ip4)
+ {
+ ip4_0 = cur0 - sizeof (udp_header_t) - sizeof (ip4_header_t);
+ ip4_1 = cur1 - sizeof (udp_header_t) - sizeof (ip4_header_t);
+ }
+ else
+ {
+ ip6_0 = cur0 - sizeof (udp_header_t) - sizeof (ip6_header_t);
+ ip6_1 = cur1 - sizeof (udp_header_t) - sizeof (ip6_header_t);
+ }
+
+ /* pop vxlan_gbp */
+ vlib_buffer_advance (b0, sizeof *vxlan_gbp0);
+ vlib_buffer_advance (b1, sizeof *vxlan_gbp1);
+
+ u32 fi0 = buf_fib_index (b0, is_ip4);
+ u32 fi1 = buf_fib_index (b1, is_ip4);
+
+ vxlan_gbp_tunnel_t *t0, *stats_t0 = 0;
+ vxlan_gbp_tunnel_t *t1, *stats_t1 = 0;
+ if (is_ip4)
+ {
+ t0 =
+ vxlan4_gbp_find_tunnel (vxm, &last4, fi0, ip4_0, vxlan_gbp0,
+ &stats_t0);
+ t1 =
+ vxlan4_gbp_find_tunnel (vxm, &last4, fi1, ip4_1, vxlan_gbp1,
+ &stats_t1);
+ }
+ else
+ {
+ t0 =
+ vxlan6_gbp_find_tunnel (vxm, &last6, fi0, ip6_0, vxlan_gbp0,
+ &stats_t0);
+ t1 =
+ vxlan6_gbp_find_tunnel (vxm, &last6, fi1, ip6_1, vxlan_gbp1,
+ &stats_t1);
+ }
+
+ u32 len0 = vlib_buffer_length_in_chain (vm, b0);
+ u32 len1 = vlib_buffer_length_in_chain (vm, b1);
+
+ u32 next0, next1;
+ u8 error0 = 0, error1 = 0;
+ u8 flags0 = vxlan_gbp_get_flags (vxlan_gbp0);
+ u8 flags1 = vxlan_gbp_get_flags (vxlan_gbp1);
+ /* Validate VXLAN_GBP tunnel encap-fib index agaist packet */
+ if (PREDICT_FALSE
+ (t0 == 0 || flags0 != (VXLAN_GBP_FLAGS_I | VXLAN_GBP_FLAGS_G)))
+ {
+ next0 = VXLAN_GBP_INPUT_NEXT_DROP;
+
+ if (t0 != 0
+ && flags0 != (VXLAN_GBP_FLAGS_I | VXLAN_GBP_FLAGS_G))
+ {
+ error0 = VXLAN_GBP_ERROR_BAD_FLAGS;
+ vlib_increment_combined_counter
+ (drop_counter, thread_index, stats_t0->sw_if_index, 1,
+ len0);
+ }
+ else
+ error0 = VXLAN_GBP_ERROR_NO_SUCH_TUNNEL;
+ b0->error = node->errors[error0];
+ }
+ else
+ {
+ next0 = t0->decap_next_index;
+ vnet_buffer2 (b0)->gbp.flags =
+ vxlan_gbp_get_gpflags (vxlan_gbp0);
+ vnet_buffer2 (b0)->gbp.src_epg =
+ vxlan_gbp_get_sclass (vxlan_gbp0);
+
+ /* Required to make the l2 tag push / pop code work on l2 subifs */
+ if (PREDICT_TRUE (next0 == VXLAN_GBP_INPUT_NEXT_L2_INPUT))
+ vnet_update_l2_len (b0);
+
+ /* Set packet input sw_if_index to unicast VXLAN tunnel for learning */
+ vnet_buffer (b0)->sw_if_index[VLIB_RX] = t0->sw_if_index;
+ vlib_increment_combined_counter
+ (rx_counter, thread_index, stats_t0->sw_if_index, 1, len0);
+ pkts_decapsulated++;
+ }
+
+ /* Validate VXLAN_GBP tunnel encap-fib index agaist packet */
+ if (PREDICT_FALSE
+ (t1 == 0 || flags1 != (VXLAN_GBP_FLAGS_I | VXLAN_GBP_FLAGS_G)))
+ {
+ next1 = VXLAN_GBP_INPUT_NEXT_DROP;
+
+ if (t1 != 0
+ && flags1 != (VXLAN_GBP_FLAGS_I | VXLAN_GBP_FLAGS_G))
+ {
+ error1 = VXLAN_GBP_ERROR_BAD_FLAGS;
+ vlib_increment_combined_counter
+ (drop_counter, thread_index, stats_t1->sw_if_index, 1,
+ len1);
+ }
+ else
+ error1 = VXLAN_GBP_ERROR_NO_SUCH_TUNNEL;
+ b1->error = node->errors[error1];
+ }
+ else
+ {
+ next1 = t1->decap_next_index;
+ vnet_buffer2 (b1)->gbp.flags =
+ vxlan_gbp_get_gpflags (vxlan_gbp1);
+ vnet_buffer2 (b1)->gbp.src_epg =
+ vxlan_gbp_get_sclass (vxlan_gbp1);
+
+ /* Required to make the l2 tag push / pop code work on l2 subifs */
+ if (PREDICT_TRUE (next1 == VXLAN_GBP_INPUT_NEXT_L2_INPUT))
+ vnet_update_l2_len (b1);
+
+ /* Set packet input sw_if_index to unicast VXLAN_GBP tunnel for learning */
+ vnet_buffer (b1)->sw_if_index[VLIB_RX] = t1->sw_if_index;
+ pkts_decapsulated++;
+
+ vlib_increment_combined_counter
+ (rx_counter, thread_index, stats_t1->sw_if_index, 1, len1);
+ }
+
+ if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ vxlan_gbp_rx_trace_t *tr =
+ vlib_add_trace (vm, node, b0, sizeof (*tr));
+ tr->next_index = next0;
+ tr->error = error0;
+ tr->tunnel_index = t0 == 0 ? ~0 : t0 - vxm->tunnels;
+ tr->vni = vxlan_gbp_get_vni (vxlan_gbp0);
+ tr->sclass = vxlan_gbp_get_sclass (vxlan_gbp0);
+ }
+ if (PREDICT_FALSE (b1->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ vxlan_gbp_rx_trace_t *tr =
+ vlib_add_trace (vm, node, b1, sizeof (*tr));
+ tr->next_index = next1;
+ tr->error = error1;
+ tr->tunnel_index = t1 == 0 ? ~0 : t1 - vxm->tunnels;
+ tr->vni = vxlan_gbp_get_vni (vxlan_gbp1);
+ tr->sclass = vxlan_gbp_get_sclass (vxlan_gbp1);
+ }
+
+ vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
+ to_next, n_left_to_next,
+ bi0, bi1, next0, next1);
+ }
+
+ while (n_left_from > 0 && n_left_to_next > 0)
+ {
+ u32 bi0 = to_next[0] = from[0];
+ from += 1;
+ to_next += 1;
+ n_left_from -= 1;
+ n_left_to_next -= 1;
+
+ vlib_buffer_t *b0 = vlib_get_buffer (vm, bi0);
+
+ /* udp leaves current_data pointing at the vxlan_gbp header */
+ void *cur0 = vlib_buffer_get_current (b0);
+ vxlan_gbp_header_t *vxlan_gbp0 = cur0;
+ ip4_header_t *ip4_0;
+ ip6_header_t *ip6_0;
+ if (is_ip4)
+ ip4_0 = cur0 - sizeof (udp_header_t) - sizeof (ip4_header_t);
+ else
+ ip6_0 = cur0 - sizeof (udp_header_t) - sizeof (ip6_header_t);
+
+ /* pop (ip, udp, vxlan_gbp) */
+ vlib_buffer_advance (b0, sizeof (*vxlan_gbp0));
+
+ u32 fi0 = buf_fib_index (b0, is_ip4);
+
+ vxlan_gbp_tunnel_t *t0, *stats_t0 = 0;
+ if (is_ip4)
+ t0 =
+ vxlan4_gbp_find_tunnel (vxm, &last4, fi0, ip4_0, vxlan_gbp0,
+ &stats_t0);
+ else
+ t0 =
+ vxlan6_gbp_find_tunnel (vxm, &last6, fi0, ip6_0, vxlan_gbp0,
+ &stats_t0);
+
+ uword len0 = vlib_buffer_length_in_chain (vm, b0);
+
+ u32 next0;
+ u8 error0 = 0;
+ u8 flags0 = vxlan_gbp_get_flags (vxlan_gbp0);
+ /* Validate VXLAN_GBP tunnel encap-fib index agaist packet */
+ if (PREDICT_FALSE
+ (t0 == 0 || flags0 != (VXLAN_GBP_FLAGS_I | VXLAN_GBP_FLAGS_G)))
+ {
+ next0 = VXLAN_GBP_INPUT_NEXT_DROP;
+
+ if (t0 != 0
+ && flags0 != (VXLAN_GBP_FLAGS_I | VXLAN_GBP_FLAGS_G))
+ {
+ error0 = VXLAN_GBP_ERROR_BAD_FLAGS;
+ vlib_increment_combined_counter
+ (drop_counter, thread_index, stats_t0->sw_if_index, 1,
+ len0);
+ }
+ else
+ error0 = VXLAN_GBP_ERROR_NO_SUCH_TUNNEL;
+ b0->error = node->errors[error0];
+ }
+ else
+ {
+ next0 = t0->decap_next_index;
+ vnet_buffer2 (b0)->gbp.flags =
+ vxlan_gbp_get_gpflags (vxlan_gbp0);
+ vnet_buffer2 (b0)->gbp.src_epg =
+ vxlan_gbp_get_sclass (vxlan_gbp0);
+
+
+ /* Required to make the l2 tag push / pop code work on l2 subifs */
+ if (PREDICT_TRUE (next0 == VXLAN_GBP_INPUT_NEXT_L2_INPUT))
+ vnet_update_l2_len (b0);
+
+ /* Set packet input sw_if_index to unicast VXLAN_GBP tunnel for learning */
+ vnet_buffer (b0)->sw_if_index[VLIB_RX] = t0->sw_if_index;
+ pkts_decapsulated++;
+
+ vlib_increment_combined_counter
+ (rx_counter, thread_index, stats_t0->sw_if_index, 1, len0);
+ }
+
+ if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ vxlan_gbp_rx_trace_t *tr
+ = vlib_add_trace (vm, node, b0, sizeof (*tr));
+ tr->next_index = next0;
+ tr->error = error0;
+ tr->tunnel_index = t0 == 0 ? ~0 : t0 - vxm->tunnels;
+ tr->vni = vxlan_gbp_get_vni (vxlan_gbp0);
+ tr->sclass = vxlan_gbp_get_sclass (vxlan_gbp0);
+ }
+ vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
+ to_next, n_left_to_next,
+ bi0, next0);
+ }
+
+ vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ }
+ /* Do we still need this now that tunnel tx stats is kept? */
+ u32 node_idx =
+ is_ip4 ? vxlan4_gbp_input_node.index : vxlan6_gbp_input_node.index;
+ vlib_node_increment_counter (vm, node_idx, VXLAN_GBP_ERROR_DECAPSULATED,
+ pkts_decapsulated);
+
+ return from_frame->n_vectors;
+}
+
+static uword
+vxlan4_gbp_input (vlib_main_t * vm,
+ vlib_node_runtime_t * node, vlib_frame_t * from_frame)
+{
+ return vxlan_gbp_input (vm, node, from_frame, /* is_ip4 */ 1);
+}
+
+static uword
+vxlan6_gbp_input (vlib_main_t * vm,
+ vlib_node_runtime_t * node, vlib_frame_t * from_frame)
+{
+ return vxlan_gbp_input (vm, node, from_frame, /* is_ip4 */ 0);
+}
+
+static char *vxlan_gbp_error_strings[] = {
+#define vxlan_gbp_error(n,s) s,
+#include <vnet/vxlan-gbp/vxlan_gbp_error.def>
+#undef vxlan_gbp_error
+#undef _
+};
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (vxlan4_gbp_input_node) =
+{
+ .function = vxlan4_gbp_input,
+ .name = "vxlan4-gbp-input",
+ .vector_size = sizeof (u32),
+ .n_errors = VXLAN_GBP_N_ERROR,
+ .error_strings = vxlan_gbp_error_strings,
+ .n_next_nodes = VXLAN_GBP_INPUT_N_NEXT,
+ .format_trace = format_vxlan_gbp_rx_trace,
+ .next_nodes = {
+#define _(s,n) [VXLAN_GBP_INPUT_NEXT_##s] = n,
+ foreach_vxlan_gbp_input_next
+#undef _
+ },
+};
+VLIB_NODE_FUNCTION_MULTIARCH (vxlan4_gbp_input_node, vxlan4_gbp_input)
+
+VLIB_REGISTER_NODE (vxlan6_gbp_input_node) =
+{
+ .function = vxlan6_gbp_input,
+ .name = "vxlan6-gbp-input",
+ .vector_size = sizeof (u32),
+ .n_errors = VXLAN_GBP_N_ERROR,
+ .error_strings = vxlan_gbp_error_strings,
+ .n_next_nodes = VXLAN_GBP_INPUT_N_NEXT,
+ .next_nodes = {
+#define _(s,n) [VXLAN_GBP_INPUT_NEXT_##s] = n,
+ foreach_vxlan_gbp_input_next
+#undef _
+ },
+ .format_trace = format_vxlan_gbp_rx_trace,
+};
+VLIB_NODE_FUNCTION_MULTIARCH (vxlan6_gbp_input_node, vxlan6_gbp_input)
+/* *INDENT-ON* */
+
+typedef enum
+{
+ IP_VXLAN_GBP_BYPASS_NEXT_DROP,
+ IP_VXLAN_GBP_BYPASS_NEXT_VXLAN_GBP,
+ IP_VXLAN_GBP_BYPASS_N_NEXT,
+} ip_vxan_gbp_bypass_next_t;
+
+always_inline uword
+ip_vxlan_gbp_bypass_inline (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame, u32 is_ip4)
+{
+ vxlan_gbp_main_t *vxm = &vxlan_gbp_main;
+ u32 *from, *to_next, n_left_from, n_left_to_next, next_index;
+ vlib_node_runtime_t *error_node =
+ vlib_node_get_runtime (vm, ip4_input_node.index);
+ ip4_address_t addr4; /* last IPv4 address matching a local VTEP address */
+ ip6_address_t addr6; /* last IPv6 address matching a local VTEP address */
+
+ from = vlib_frame_vector_args (frame);
+ n_left_from = frame->n_vectors;
+ next_index = node->cached_next_index;
+
+ if (node->flags & VLIB_NODE_FLAG_TRACE)
+ ip4_forward_next_trace (vm, node, frame, VLIB_TX);
+
+ if (is_ip4)
+ addr4.data_u32 = ~0;
+ else
+ ip6_address_set_zero (&addr6);
+
+ while (n_left_from > 0)
+ {
+ vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
+
+ while (n_left_from >= 4 && n_left_to_next >= 2)
+ {
+ vlib_buffer_t *b0, *b1;
+ ip4_header_t *ip40, *ip41;
+ ip6_header_t *ip60, *ip61;
+ udp_header_t *udp0, *udp1;
+ u32 bi0, ip_len0, udp_len0, flags0, next0;
+ u32 bi1, ip_len1, udp_len1, flags1, next1;
+ i32 len_diff0, len_diff1;
+ u8 error0, good_udp0, proto0;
+ u8 error1, good_udp1, proto1;
+
+ /* Prefetch next iteration. */
+ {
+ vlib_buffer_t *p2, *p3;
+
+ p2 = vlib_get_buffer (vm, from[2]);
+ p3 = vlib_get_buffer (vm, from[3]);
+
+ vlib_prefetch_buffer_header (p2, LOAD);
+ vlib_prefetch_buffer_header (p3, LOAD);
+
+ CLIB_PREFETCH (p2->data, 2 * CLIB_CACHE_LINE_BYTES, LOAD);
+ CLIB_PREFETCH (p3->data, 2 * CLIB_CACHE_LINE_BYTES, LOAD);
+ }
+
+ bi0 = to_next[0] = from[0];
+ bi1 = to_next[1] = from[1];
+ from += 2;
+ n_left_from -= 2;
+ to_next += 2;
+ n_left_to_next -= 2;
+
+ b0 = vlib_get_buffer (vm, bi0);
+ b1 = vlib_get_buffer (vm, bi1);
+ if (is_ip4)
+ {
+ ip40 = vlib_buffer_get_current (b0);
+ ip41 = vlib_buffer_get_current (b1);
+ }
+ else
+ {
+ ip60 = vlib_buffer_get_current (b0);
+ ip61 = vlib_buffer_get_current (b1);
+ }
+
+ /* Setup packet for next IP feature */
+ vnet_feature_next (&next0, b0);
+ vnet_feature_next (&next1, b1);
+
+ if (is_ip4)
+ {
+ /* Treat IP frag packets as "experimental" protocol for now
+ until support of IP frag reassembly is implemented */
+ proto0 = ip4_is_fragment (ip40) ? 0xfe : ip40->protocol;
+ proto1 = ip4_is_fragment (ip41) ? 0xfe : ip41->protocol;
+ }
+ else
+ {
+ proto0 = ip60->protocol;
+ proto1 = ip61->protocol;
+ }
+
+ /* Process packet 0 */
+ if (proto0 != IP_PROTOCOL_UDP)
+ goto exit0; /* not UDP packet */
+
+ if (is_ip4)
+ udp0 = ip4_next_header (ip40);
+ else
+ udp0 = ip6_next_header (ip60);
+
+ if (udp0->dst_port != clib_host_to_net_u16 (UDP_DST_PORT_vxlan_gbp))
+ goto exit0; /* not VXLAN_GBP packet */
+
+ /* Validate DIP against VTEPs */
+ if (is_ip4)
+ {
+ if (addr4.as_u32 != ip40->dst_address.as_u32)
+ {
+ if (!hash_get (vxm->vtep4, ip40->dst_address.as_u32))
+ goto exit0; /* no local VTEP for VXLAN_GBP packet */
+ addr4 = ip40->dst_address;
+ }
+ }
+ else
+ {
+ if (!ip6_address_is_equal (&addr6, &ip60->dst_address))
+ {
+ if (!hash_get_mem (vxm->vtep6, &ip60->dst_address))
+ goto exit0; /* no local VTEP for VXLAN_GBP packet */
+ addr6 = ip60->dst_address;
+ }
+ }
+
+ flags0 = b0->flags;
+ good_udp0 = (flags0 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;
+
+ /* Don't verify UDP checksum for packets with explicit zero checksum. */
+ good_udp0 |= udp0->checksum == 0;
+
+ /* Verify UDP length */
+ if (is_ip4)
+ ip_len0 = clib_net_to_host_u16 (ip40->length);
+ else
+ ip_len0 = clib_net_to_host_u16 (ip60->payload_length);
+ udp_len0 = clib_net_to_host_u16 (udp0->length);
+ len_diff0 = ip_len0 - udp_len0;
+
+ /* Verify UDP checksum */
+ if (PREDICT_FALSE (!good_udp0))
+ {
+ if ((flags0 & VNET_BUFFER_F_L4_CHECKSUM_COMPUTED) == 0)
+ {
+ if (is_ip4)
+ flags0 = ip4_tcp_udp_validate_checksum (vm, b0);
+ else
+ flags0 = ip6_tcp_udp_icmp_validate_checksum (vm, b0);
+ good_udp0 =
+ (flags0 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;
+ }
+ }
+
+ if (is_ip4)
+ {
+ error0 = good_udp0 ? 0 : IP4_ERROR_UDP_CHECKSUM;
+ error0 = (len_diff0 >= 0) ? error0 : IP4_ERROR_UDP_LENGTH;
+ }
+ else
+ {
+ error0 = good_udp0 ? 0 : IP6_ERROR_UDP_CHECKSUM;
+ error0 = (len_diff0 >= 0) ? error0 : IP6_ERROR_UDP_LENGTH;
+ }
+
+ next0 = error0 ?
+ IP_VXLAN_GBP_BYPASS_NEXT_DROP :
+ IP_VXLAN_GBP_BYPASS_NEXT_VXLAN_GBP;
+ b0->error = error0 ? error_node->errors[error0] : 0;
+
+ /* vxlan-gbp-input node expect current at VXLAN_GBP header */
+ if (is_ip4)
+ vlib_buffer_advance (b0,
+ sizeof (ip4_header_t) +
+ sizeof (udp_header_t));
+ else
+ vlib_buffer_advance (b0,
+ sizeof (ip6_header_t) +
+ sizeof (udp_header_t));
+
+ exit0:
+ /* Process packet 1 */
+ if (proto1 != IP_PROTOCOL_UDP)
+ goto exit1; /* not UDP packet */
+
+ if (is_ip4)
+ udp1 = ip4_next_header (ip41);
+ else
+ udp1 = ip6_next_header (ip61);
+
+ if (udp1->dst_port != clib_host_to_net_u16 (UDP_DST_PORT_vxlan_gbp))
+ goto exit1; /* not VXLAN_GBP packet */
+
+ /* Validate DIP against VTEPs */
+ if (is_ip4)
+ {
+ if (addr4.as_u32 != ip41->dst_address.as_u32)
+ {
+ if (!hash_get (vxm->vtep4, ip41->dst_address.as_u32))
+ goto exit1; /* no local VTEP for VXLAN_GBP packet */
+ addr4 = ip41->dst_address;
+ }
+ }
+ else
+ {
+ if (!ip6_address_is_equal (&addr6, &ip61->dst_address))
+ {
+ if (!hash_get_mem (vxm->vtep6, &ip61->dst_address))
+ goto exit1; /* no local VTEP for VXLAN_GBP packet */
+ addr6 = ip61->dst_address;
+ }
+ }
+
+ flags1 = b1->flags;
+ good_udp1 = (flags1 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;
+
+ /* Don't verify UDP checksum for packets with explicit zero checksum. */
+ good_udp1 |= udp1->checksum == 0;
+
+ /* Verify UDP length */
+ if (is_ip4)
+ ip_len1 = clib_net_to_host_u16 (ip41->length);
+ else
+ ip_len1 = clib_net_to_host_u16 (ip61->payload_length);
+ udp_len1 = clib_net_to_host_u16 (udp1->length);
+ len_diff1 = ip_len1 - udp_len1;
+
+ /* Verify UDP checksum */
+ if (PREDICT_FALSE (!good_udp1))
+ {
+ if ((flags1 & VNET_BUFFER_F_L4_CHECKSUM_COMPUTED) == 0)
+ {
+ if (is_ip4)
+ flags1 = ip4_tcp_udp_validate_checksum (vm, b1);
+ else
+ flags1 = ip6_tcp_udp_icmp_validate_checksum (vm, b1);
+ good_udp1 =
+ (flags1 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;
+ }
+ }
+
+ if (is_ip4)
+ {
+ error1 = good_udp1 ? 0 : IP4_ERROR_UDP_CHECKSUM;
+ error1 = (len_diff1 >= 0) ? error1 : IP4_ERROR_UDP_LENGTH;
+ }
+ else
+ {
+ error1 = good_udp1 ? 0 : IP6_ERROR_UDP_CHECKSUM;
+ error1 = (len_diff1 >= 0) ? error1 : IP6_ERROR_UDP_LENGTH;
+ }
+
+ next1 = error1 ?
+ IP_VXLAN_GBP_BYPASS_NEXT_DROP :
+ IP_VXLAN_GBP_BYPASS_NEXT_VXLAN_GBP;
+ b1->error = error1 ? error_node->errors[error1] : 0;
+
+ /* vxlan_gbp-input node expect current at VXLAN_GBP header */
+ if (is_ip4)
+ vlib_buffer_advance (b1,
+ sizeof (ip4_header_t) +
+ sizeof (udp_header_t));
+ else
+ vlib_buffer_advance (b1,
+ sizeof (ip6_header_t) +
+ sizeof (udp_header_t));
+
+ exit1:
+ vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
+ to_next, n_left_to_next,
+ bi0, bi1, next0, next1);
+ }
+
+ while (n_left_from > 0 && n_left_to_next > 0)
+ {
+ vlib_buffer_t *b0;
+ ip4_header_t *ip40;
+ ip6_header_t *ip60;
+ udp_header_t *udp0;
+ u32 bi0, ip_len0, udp_len0, flags0, next0;
+ i32 len_diff0;
+ u8 error0, good_udp0, proto0;
+
+ bi0 = to_next[0] = from[0];
+ from += 1;
+ n_left_from -= 1;
+ to_next += 1;
+ n_left_to_next -= 1;
+
+ b0 = vlib_get_buffer (vm, bi0);
+ if (is_ip4)
+ ip40 = vlib_buffer_get_current (b0);
+ else
+ ip60 = vlib_buffer_get_current (b0);
+
+ /* Setup packet for next IP feature */
+ vnet_feature_next (&next0, b0);
+
+ if (is_ip4)
+ /* Treat IP4 frag packets as "experimental" protocol for now
+ until support of IP frag reassembly is implemented */
+ proto0 = ip4_is_fragment (ip40) ? 0xfe : ip40->protocol;
+ else
+ proto0 = ip60->protocol;
+
+ if (proto0 != IP_PROTOCOL_UDP)
+ goto exit; /* not UDP packet */
+
+ if (is_ip4)
+ udp0 = ip4_next_header (ip40);
+ else
+ udp0 = ip6_next_header (ip60);
+
+ if (udp0->dst_port != clib_host_to_net_u16 (UDP_DST_PORT_vxlan_gbp))
+ goto exit; /* not VXLAN_GBP packet */
+
+ /* Validate DIP against VTEPs */
+ if (is_ip4)
+ {
+ if (addr4.as_u32 != ip40->dst_address.as_u32)
+ {
+ if (!hash_get (vxm->vtep4, ip40->dst_address.as_u32))
+ goto exit; /* no local VTEP for VXLAN_GBP packet */
+ addr4 = ip40->dst_address;
+ }
+ }
+ else
+ {
+ if (!ip6_address_is_equal (&addr6, &ip60->dst_address))
+ {
+ if (!hash_get_mem (vxm->vtep6, &ip60->dst_address))
+ goto exit; /* no local VTEP for VXLAN_GBP packet */
+ addr6 = ip60->dst_address;
+ }
+ }
+
+ flags0 = b0->flags;
+ good_udp0 = (flags0 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;
+
+ /* Don't verify UDP checksum for packets with explicit zero checksum. */
+ good_udp0 |= udp0->checksum == 0;
+
+ /* Verify UDP length */
+ if (is_ip4)
+ ip_len0 = clib_net_to_host_u16 (ip40->length);
+ else
+ ip_len0 = clib_net_to_host_u16 (ip60->payload_length);
+ udp_len0 = clib_net_to_host_u16 (udp0->length);
+ len_diff0 = ip_len0 - udp_len0;
+
+ /* Verify UDP checksum */
+ if (PREDICT_FALSE (!good_udp0))
+ {
+ if ((flags0 & VNET_BUFFER_F_L4_CHECKSUM_COMPUTED) == 0)
+ {
+ if (is_ip4)
+ flags0 = ip4_tcp_udp_validate_checksum (vm, b0);
+ else
+ flags0 = ip6_tcp_udp_icmp_validate_checksum (vm, b0);
+ good_udp0 =
+ (flags0 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;
+ }
+ }
+
+ if (is_ip4)
+ {
+ error0 = good_udp0 ? 0 : IP4_ERROR_UDP_CHECKSUM;
+ error0 = (len_diff0 >= 0) ? error0 : IP4_ERROR_UDP_LENGTH;
+ }
+ else
+ {
+ error0 = good_udp0 ? 0 : IP6_ERROR_UDP_CHECKSUM;
+ error0 = (len_diff0 >= 0) ? error0 : IP6_ERROR_UDP_LENGTH;
+ }
+
+ next0 = error0 ?
+ IP_VXLAN_GBP_BYPASS_NEXT_DROP :
+ IP_VXLAN_GBP_BYPASS_NEXT_VXLAN_GBP;
+ b0->error = error0 ? error_node->errors[error0] : 0;
+
+ /* vxlan_gbp-input node expect current at VXLAN_GBP header */
+ if (is_ip4)
+ vlib_buffer_advance (b0,
+ sizeof (ip4_header_t) +
+ sizeof (udp_header_t));
+ else
+ vlib_buffer_advance (b0,
+ sizeof (ip6_header_t) +
+ sizeof (udp_header_t));
+
+ exit:
+ vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
+ to_next, n_left_to_next,
+ bi0, next0);
+ }
+
+ vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ }
+
+ return frame->n_vectors;
+}
+
+static uword
+ip4_vxlan_gbp_bypass (vlib_main_t * vm,
+ vlib_node_runtime_t * node, vlib_frame_t * frame)
+{
+ return ip_vxlan_gbp_bypass_inline (vm, node, frame, /* is_ip4 */ 1);
+}
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (ip4_vxlan_gbp_bypass_node) =
+{
+ .function = ip4_vxlan_gbp_bypass,
+ .name = "ip4-vxlan-gbp-bypass",
+ .vector_size = sizeof (u32),
+ .n_next_nodes = IP_VXLAN_GBP_BYPASS_N_NEXT,
+ .next_nodes = {
+ [IP_VXLAN_GBP_BYPASS_NEXT_DROP] = "error-drop",
+ [IP_VXLAN_GBP_BYPASS_NEXT_VXLAN_GBP] = "vxlan4-gbp-input",
+ },
+ .format_buffer = format_ip4_header,
+ .format_trace = format_ip4_forward_next_trace,
+};
+
+VLIB_NODE_FUNCTION_MULTIARCH (ip4_vxlan_gbp_bypass_node, ip4_vxlan_gbp_bypass)
+/* *INDENT-ON* */
+
+/* Dummy init function to get us linked in. */
+clib_error_t *
+ip4_vxlan_gbp_bypass_init (vlib_main_t * vm)
+{
+ return 0;
+}
+
+VLIB_INIT_FUNCTION (ip4_vxlan_gbp_bypass_init);
+
+static uword
+ip6_vxlan_gbp_bypass (vlib_main_t * vm,
+ vlib_node_runtime_t * node, vlib_frame_t * frame)
+{
+ return ip_vxlan_gbp_bypass_inline (vm, node, frame, /* is_ip4 */ 0);
+}
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (ip6_vxlan_gbp_bypass_node) =
+{
+ .function = ip6_vxlan_gbp_bypass,
+ .name = "ip6-vxlan-gbp-bypass",
+ .vector_size = sizeof (u32),
+ .n_next_nodes = IP_VXLAN_GBP_BYPASS_N_NEXT,
+ .next_nodes = {
+ [IP_VXLAN_GBP_BYPASS_NEXT_DROP] = "error-drop",
+ [IP_VXLAN_GBP_BYPASS_NEXT_VXLAN_GBP] = "vxlan6-gbp-input",
+ },
+ .format_buffer = format_ip6_header,
+ .format_trace = format_ip6_forward_next_trace,
+};
+
+VLIB_NODE_FUNCTION_MULTIARCH (ip6_vxlan_gbp_bypass_node, ip6_vxlan_gbp_bypass)
+/* *INDENT-ON* */
+
+/* Dummy init function to get us linked in. */
+clib_error_t *
+ip6_vxlan_gbp_bypass_init (vlib_main_t * vm)
+{
+ return 0;
+}
+
+VLIB_INIT_FUNCTION (ip6_vxlan_gbp_bypass_init);
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
--- /dev/null
+/*
+ * 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.
+ */
+
+/**
+@dir
+@brief VXLAN-GBP Code.
+
+This directory contains source code to support VXLAN-GBP.
+
+*/
+/*? %%clicmd:group_label VXLAN-GBP CLI %% ?*/
--- /dev/null
+/*
+ * 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.
+ */
+#include <vppinfra/error.h>
+#include <vppinfra/hash.h>
+#include <vnet/vnet.h>
+#include <vnet/ip/ip.h>
+#include <vnet/ethernet/ethernet.h>
+#include <vnet/vxlan-gbp/vxlan_gbp.h>
+#include <vnet/qos/qos_types.h>
+#include <vnet/adj/rewrite.h>
+
+/* Statistics (not all errors) */
+#define foreach_vxlan_gbp_encap_error \
+_(ENCAPSULATED, "good packets encapsulated")
+
+static char *vxlan_gbp_encap_error_strings[] = {
+#define _(sym,string) string,
+ foreach_vxlan_gbp_encap_error
+#undef _
+};
+
+typedef enum
+{
+#define _(sym,str) VXLAN_GBP_ENCAP_ERROR_##sym,
+ foreach_vxlan_gbp_encap_error
+#undef _
+ VXLAN_GBP_ENCAP_N_ERROR,
+} vxlan_gbp_encap_error_t;
+
+typedef enum
+{
+ VXLAN_GBP_ENCAP_NEXT_DROP,
+ VXLAN_GBP_ENCAP_N_NEXT,
+} vxlan_gbp_encap_next_t;
+
+typedef struct
+{
+ u32 tunnel_index;
+ u32 vni;
+ u16 sclass;
+} vxlan_gbp_encap_trace_t;
+
+u8 *
+format_vxlan_gbp_encap_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 *);
+ vxlan_gbp_encap_trace_t *t = va_arg (*args, vxlan_gbp_encap_trace_t *);
+
+ s = format (s, "VXLAN_GBP encap to vxlan_gbp_tunnel%d vni %d sclass %d",
+ t->tunnel_index, t->vni, t->sclass);
+ return s;
+}
+
+always_inline uword
+vxlan_gbp_encap_inline (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * from_frame, u8 is_ip4, u8 csum_offload)
+{
+ u32 n_left_from, next_index, *from, *to_next;
+ vxlan_gbp_main_t *vxm = &vxlan_gbp_main;
+ vnet_main_t *vnm = vxm->vnet_main;
+ vnet_interface_main_t *im = &vnm->interface_main;
+ vlib_combined_counter_main_t *tx_counter =
+ im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_TX;
+ u32 pkts_encapsulated = 0;
+ u32 thread_index = vlib_get_thread_index ();
+ u32 sw_if_index0 = 0, sw_if_index1 = 0;
+ u32 next0 = 0, next1 = 0;
+ vxlan_gbp_tunnel_t *t0 = NULL, *t1 = NULL;
+ index_t dpoi_idx0 = INDEX_INVALID, dpoi_idx1 = INDEX_INVALID;
+
+ from = vlib_frame_vector_args (from_frame);
+ n_left_from = from_frame->n_vectors;
+
+ next_index = node->cached_next_index;
+
+ STATIC_ASSERT_SIZEOF (ip6_vxlan_gbp_header_t, 56);
+ STATIC_ASSERT_SIZEOF (ip4_vxlan_gbp_header_t, 36);
+
+ u8 const underlay_hdr_len = is_ip4 ?
+ sizeof (ip4_vxlan_gbp_header_t) : sizeof (ip6_vxlan_gbp_header_t);
+ u8 const rw_hdr_offset = sizeof t0->rewrite_data - underlay_hdr_len;
+ u16 const l3_len = is_ip4 ? sizeof (ip4_header_t) : sizeof (ip6_header_t);
+ u32 const csum_flags = is_ip4 ?
+ VNET_BUFFER_F_OFFLOAD_IP_CKSUM | VNET_BUFFER_F_IS_IP4 |
+ VNET_BUFFER_F_OFFLOAD_UDP_CKSUM : VNET_BUFFER_F_OFFLOAD_UDP_CKSUM;
+
+ while (n_left_from > 0)
+ {
+ u32 n_left_to_next;
+
+ vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
+
+ while (n_left_from >= 4 && n_left_to_next >= 2)
+ {
+ /* Prefetch next iteration. */
+ {
+ vlib_buffer_t *p2, *p3;
+
+ p2 = vlib_get_buffer (vm, from[2]);
+ p3 = vlib_get_buffer (vm, from[3]);
+
+ vlib_prefetch_buffer_header (p2, LOAD);
+ vlib_prefetch_buffer_header (p3, LOAD);
+
+ CLIB_PREFETCH (p2->data, 2 * CLIB_CACHE_LINE_BYTES, LOAD);
+ CLIB_PREFETCH (p3->data, 2 * CLIB_CACHE_LINE_BYTES, LOAD);
+ }
+
+ u32 bi0 = to_next[0] = from[0];
+ u32 bi1 = to_next[1] = from[1];
+ from += 2;
+ to_next += 2;
+ n_left_to_next -= 2;
+ n_left_from -= 2;
+
+ vlib_buffer_t *b0 = vlib_get_buffer (vm, bi0);
+ vlib_buffer_t *b1 = vlib_get_buffer (vm, bi1);
+ u32 flow_hash0 = vnet_l2_compute_flow_hash (b0);
+ u32 flow_hash1 = vnet_l2_compute_flow_hash (b1);
+
+ /* Get next node index and adj index from tunnel next_dpo */
+ if (sw_if_index0 != vnet_buffer (b0)->sw_if_index[VLIB_TX])
+ {
+ sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_TX];
+ vnet_hw_interface_t *hi0 =
+ vnet_get_sup_hw_interface (vnm, sw_if_index0);
+ t0 = &vxm->tunnels[hi0->dev_instance];
+ /* Note: change to always set next0 if it may set to drop */
+ next0 = t0->next_dpo.dpoi_next_node;
+ dpoi_idx0 = t0->next_dpo.dpoi_index;
+ }
+
+ /* Get next node index and adj index from tunnel next_dpo */
+ if (sw_if_index1 != vnet_buffer (b1)->sw_if_index[VLIB_TX])
+ {
+ if (sw_if_index0 == vnet_buffer (b1)->sw_if_index[VLIB_TX])
+ {
+ sw_if_index1 = sw_if_index0;
+ t1 = t0;
+ next1 = next0;
+ dpoi_idx1 = dpoi_idx0;
+ }
+ else
+ {
+ sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_TX];
+ vnet_hw_interface_t *hi1 =
+ vnet_get_sup_hw_interface (vnm, sw_if_index1);
+ t1 = &vxm->tunnels[hi1->dev_instance];
+ /* Note: change to always set next1 if it may set to drop */
+ next1 = t1->next_dpo.dpoi_next_node;
+ dpoi_idx1 = t1->next_dpo.dpoi_index;
+ }
+ }
+
+ vnet_buffer (b0)->ip.adj_index[VLIB_TX] = dpoi_idx0;
+ vnet_buffer (b1)->ip.adj_index[VLIB_TX] = dpoi_idx1;
+
+ ASSERT (t0->rewrite_header.data_bytes == underlay_hdr_len);
+ ASSERT (t1->rewrite_header.data_bytes == underlay_hdr_len);
+
+ vlib_buffer_advance (b0, -underlay_hdr_len);
+ vlib_buffer_advance (b1, -underlay_hdr_len);
+
+ u32 len0 = vlib_buffer_length_in_chain (vm, b0);
+ u32 len1 = vlib_buffer_length_in_chain (vm, b1);
+ u16 payload_l0 = clib_host_to_net_u16 (len0 - l3_len);
+ u16 payload_l1 = clib_host_to_net_u16 (len1 - l3_len);
+
+ void *underlay0 = vlib_buffer_get_current (b0);
+ void *underlay1 = vlib_buffer_get_current (b1);
+
+ /* vnet_rewrite_two_header writes only in (uword) 8 bytes chunks
+ * and discards the first 4 bytes of the (36 bytes ip4 underlay) rewrite
+ * use memcpy as a workaround */
+ clib_memcpy (underlay0, t0->rewrite_header.data + rw_hdr_offset,
+ underlay_hdr_len);
+ clib_memcpy (underlay1, t1->rewrite_header.data + rw_hdr_offset,
+ underlay_hdr_len);
+
+ ip4_header_t *ip4_0, *ip4_1;
+ qos_bits_t ip4_0_tos = 0, ip4_1_tos = 0;
+ ip6_header_t *ip6_0, *ip6_1;
+ udp_header_t *udp0, *udp1;
+ vxlan_gbp_header_t *vxlan_gbp0, *vxlan_gbp1;
+ u8 *l3_0, *l3_1;
+ if (is_ip4)
+ {
+ ip4_vxlan_gbp_header_t *hdr0 = underlay0;
+ ip4_vxlan_gbp_header_t *hdr1 = underlay1;
+
+ /* Fix the IP4 checksum and length */
+ ip4_0 = &hdr0->ip4;
+ ip4_1 = &hdr1->ip4;
+ ip4_0->length = clib_host_to_net_u16 (len0);
+ ip4_1->length = clib_host_to_net_u16 (len1);
+
+ if (PREDICT_FALSE (b0->flags & VNET_BUFFER_F_QOS_DATA_VALID))
+ {
+ ip4_0_tos = vnet_buffer2 (b0)->qos.bits;
+ ip4_0->tos = ip4_0_tos;
+ }
+ if (PREDICT_FALSE (b1->flags & VNET_BUFFER_F_QOS_DATA_VALID))
+ {
+ ip4_1_tos = vnet_buffer2 (b1)->qos.bits;
+ ip4_1->tos = ip4_1_tos;
+ }
+
+ l3_0 = (u8 *) ip4_0;
+ l3_1 = (u8 *) ip4_1;
+ udp0 = &hdr0->udp;
+ udp1 = &hdr1->udp;
+ vxlan_gbp0 = &hdr0->vxlan_gbp;
+ vxlan_gbp1 = &hdr1->vxlan_gbp;
+ }
+ else /* ipv6 */
+ {
+ ip6_vxlan_gbp_header_t *hdr0 = underlay0;
+ ip6_vxlan_gbp_header_t *hdr1 = underlay1;
+
+ /* Fix IP6 payload length */
+ ip6_0 = &hdr0->ip6;
+ ip6_1 = &hdr1->ip6;
+ ip6_0->payload_length = payload_l0;
+ ip6_1->payload_length = payload_l1;
+
+ l3_0 = (u8 *) ip6_0;
+ l3_1 = (u8 *) ip6_1;
+ udp0 = &hdr0->udp;
+ udp1 = &hdr1->udp;
+ vxlan_gbp0 = &hdr0->vxlan_gbp;
+ vxlan_gbp1 = &hdr1->vxlan_gbp;
+ }
+
+ /* Fix UDP length and set source port */
+ udp0->length = payload_l0;
+ udp0->src_port = flow_hash0;
+ udp1->length = payload_l1;
+ udp1->src_port = flow_hash1;
+
+ /* set source class and gpflags */
+ vxlan_gbp0->gpflags = vnet_buffer2 (b0)->gbp.flags;
+ vxlan_gbp1->gpflags = vnet_buffer2 (b1)->gbp.flags;
+ vxlan_gbp0->sclass =
+ clib_host_to_net_u16 (vnet_buffer2 (b0)->gbp.src_epg);
+ vxlan_gbp1->sclass =
+ clib_host_to_net_u16 (vnet_buffer2 (b1)->gbp.src_epg);
+
+ if (csum_offload)
+ {
+ b0->flags |= csum_flags;
+ vnet_buffer (b0)->l3_hdr_offset = l3_0 - b0->data;
+ vnet_buffer (b0)->l4_hdr_offset = (u8 *) udp0 - b0->data;
+ b1->flags |= csum_flags;
+ vnet_buffer (b1)->l3_hdr_offset = l3_1 - b1->data;
+ vnet_buffer (b1)->l4_hdr_offset = (u8 *) udp1 - b1->data;
+ }
+ /* IPv4 UDP checksum only if checksum offload is used */
+ else if (is_ip4)
+ {
+ ip_csum_t sum0 = ip4_0->checksum;
+ sum0 = ip_csum_update (sum0, 0, ip4_0->length, ip4_header_t,
+ length /* changed member */ );
+ if (PREDICT_FALSE (ip4_0_tos))
+ {
+ sum0 = ip_csum_update (sum0, 0, ip4_0_tos, ip4_header_t,
+ tos /* changed member */ );
+ }
+ ip4_0->checksum = ip_csum_fold (sum0);
+ ip_csum_t sum1 = ip4_1->checksum;
+ sum1 = ip_csum_update (sum1, 0, ip4_1->length, ip4_header_t,
+ length /* changed member */ );
+ if (PREDICT_FALSE (ip4_1_tos))
+ {
+ sum1 = ip_csum_update (sum1, 0, ip4_1_tos, ip4_header_t,
+ tos /* changed member */ );
+ }
+ ip4_1->checksum = ip_csum_fold (sum1);
+ }
+ /* IPv6 UDP checksum is mandatory */
+ else
+ {
+ int bogus = 0;
+
+ udp0->checksum = ip6_tcp_udp_icmp_compute_checksum
+ (vm, b0, ip6_0, &bogus);
+ ASSERT (bogus == 0);
+ if (udp0->checksum == 0)
+ udp0->checksum = 0xffff;
+ udp1->checksum = ip6_tcp_udp_icmp_compute_checksum
+ (vm, b1, ip6_1, &bogus);
+ ASSERT (bogus == 0);
+ if (udp1->checksum == 0)
+ udp1->checksum = 0xffff;
+ }
+
+ vlib_increment_combined_counter (tx_counter, thread_index,
+ sw_if_index0, 1, len0);
+ vlib_increment_combined_counter (tx_counter, thread_index,
+ sw_if_index1, 1, len1);
+ pkts_encapsulated += 2;
+
+ if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ vxlan_gbp_encap_trace_t *tr =
+ vlib_add_trace (vm, node, b0, sizeof (*tr));
+ tr->tunnel_index = t0 - vxm->tunnels;
+ tr->vni = t0->vni;
+ tr->sclass = vnet_buffer2 (b0)->gbp.src_epg;
+ }
+
+ if (PREDICT_FALSE (b1->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ vxlan_gbp_encap_trace_t *tr =
+ vlib_add_trace (vm, node, b1, sizeof (*tr));
+ tr->tunnel_index = t1 - vxm->tunnels;
+ tr->vni = t1->vni;
+ tr->sclass = vnet_buffer2 (b1)->gbp.src_epg;
+ }
+
+ vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
+ to_next, n_left_to_next,
+ bi0, bi1, next0, next1);
+ }
+
+ while (n_left_from > 0 && n_left_to_next > 0)
+ {
+ u32 bi0 = to_next[0] = from[0];
+ from += 1;
+ to_next += 1;
+ n_left_from -= 1;
+ n_left_to_next -= 1;
+
+ vlib_buffer_t *b0 = vlib_get_buffer (vm, bi0);
+ u32 flow_hash0 = vnet_l2_compute_flow_hash (b0);
+
+ /* Get next node index and adj index from tunnel next_dpo */
+ if (sw_if_index0 != vnet_buffer (b0)->sw_if_index[VLIB_TX])
+ {
+ sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_TX];
+ vnet_hw_interface_t *hi0 =
+ vnet_get_sup_hw_interface (vnm, sw_if_index0);
+ t0 = &vxm->tunnels[hi0->dev_instance];
+ /* Note: change to always set next0 if it may be set to drop */
+ next0 = t0->next_dpo.dpoi_next_node;
+ dpoi_idx0 = t0->next_dpo.dpoi_index;
+ }
+ vnet_buffer (b0)->ip.adj_index[VLIB_TX] = dpoi_idx0;
+
+ ASSERT (t0->rewrite_header.data_bytes == underlay_hdr_len);
+
+ vlib_buffer_advance (b0, -underlay_hdr_len);
+ void *underlay0 = vlib_buffer_get_current (b0);
+
+ /* vnet_rewrite_one_header writes only in (uword) 8 bytes chunks
+ * and discards the first 4 bytes of the (36 bytes ip4 underlay) rewrite
+ * use memcpy as a workaround */
+ clib_memcpy (underlay0, t0->rewrite_header.data + rw_hdr_offset,
+ underlay_hdr_len);
+
+ u32 len0 = vlib_buffer_length_in_chain (vm, b0);
+ u16 payload_l0 = clib_host_to_net_u16 (len0 - l3_len);
+
+ vxlan_gbp_header_t *vxlan_gbp0;
+ udp_header_t *udp0;
+ ip4_header_t *ip4_0;
+ qos_bits_t ip4_0_tos = 0;
+ ip6_header_t *ip6_0;
+ u8 *l3_0;
+ if (is_ip4)
+ {
+ ip4_vxlan_gbp_header_t *hdr = underlay0;
+
+ /* Fix the IP4 checksum and length */
+ ip4_0 = &hdr->ip4;
+ ip4_0->length = clib_host_to_net_u16 (len0);
+
+ if (PREDICT_FALSE (b0->flags & VNET_BUFFER_F_QOS_DATA_VALID))
+ {
+ ip4_0_tos = vnet_buffer2 (b0)->qos.bits;
+ ip4_0->tos = ip4_0_tos;
+ }
+
+ l3_0 = (u8 *) ip4_0;
+ udp0 = &hdr->udp;
+ vxlan_gbp0 = &hdr->vxlan_gbp;
+ }
+ else /* ip6 path */
+ {
+ ip6_vxlan_gbp_header_t *hdr = underlay0;
+
+ /* Fix IP6 payload length */
+ ip6_0 = &hdr->ip6;
+ ip6_0->payload_length = payload_l0;
+
+ l3_0 = (u8 *) ip6_0;
+ udp0 = &hdr->udp;
+ vxlan_gbp0 = &hdr->vxlan_gbp;
+ }
+
+ /* Fix UDP length and set source port */
+ udp0->length = payload_l0;
+ udp0->src_port = flow_hash0;
+
+ /* set source class and gpflags */
+ vxlan_gbp0->gpflags = vnet_buffer2 (b0)->gbp.flags;
+ vxlan_gbp0->sclass =
+ clib_host_to_net_u16 (vnet_buffer2 (b0)->gbp.src_epg);
+
+ if (csum_offload)
+ {
+ b0->flags |= csum_flags;
+ vnet_buffer (b0)->l3_hdr_offset = l3_0 - b0->data;
+ vnet_buffer (b0)->l4_hdr_offset = (u8 *) udp0 - b0->data;
+ }
+ /* IPv4 UDP checksum only if checksum offload is used */
+ else if (is_ip4)
+ {
+ ip_csum_t sum0 = ip4_0->checksum;
+ sum0 = ip_csum_update (sum0, 0, ip4_0->length, ip4_header_t,
+ length /* changed member */ );
+ if (PREDICT_FALSE (ip4_0_tos))
+ {
+ sum0 = ip_csum_update (sum0, 0, ip4_0_tos, ip4_header_t,
+ tos /* changed member */ );
+ }
+ ip4_0->checksum = ip_csum_fold (sum0);
+ }
+ /* IPv6 UDP checksum is mandatory */
+ else
+ {
+ int bogus = 0;
+
+ udp0->checksum = ip6_tcp_udp_icmp_compute_checksum
+ (vm, b0, ip6_0, &bogus);
+ ASSERT (bogus == 0);
+ if (udp0->checksum == 0)
+ udp0->checksum = 0xffff;
+ }
+
+ vlib_increment_combined_counter (tx_counter, thread_index,
+ sw_if_index0, 1, len0);
+ pkts_encapsulated++;
+
+ if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ vxlan_gbp_encap_trace_t *tr =
+ vlib_add_trace (vm, node, b0, sizeof (*tr));
+ tr->tunnel_index = t0 - vxm->tunnels;
+ tr->vni = t0->vni;
+ tr->sclass = vnet_buffer2 (b0)->gbp.src_epg;
+ }
+ vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
+ to_next, n_left_to_next,
+ bi0, next0);
+ }
+
+ vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ }
+
+ /* Do we still need this now that tunnel tx stats is kept? */
+ vlib_node_increment_counter (vm, node->node_index,
+ VXLAN_GBP_ENCAP_ERROR_ENCAPSULATED,
+ pkts_encapsulated);
+
+ return from_frame->n_vectors;
+}
+
+static uword
+vxlan4_gbp_encap (vlib_main_t * vm,
+ vlib_node_runtime_t * node, vlib_frame_t * from_frame)
+{
+ /* Disable chksum offload as setup overhead in tx node is not worthwhile
+ for ip4 header checksum only, unless udp checksum is also required */
+ return vxlan_gbp_encap_inline (vm, node, from_frame, /* is_ip4 */ 1,
+ /* csum_offload */ 0);
+}
+
+static uword
+vxlan6_gbp_encap (vlib_main_t * vm,
+ vlib_node_runtime_t * node, vlib_frame_t * from_frame)
+{
+ /* Enable checksum offload for ip6 as udp checksum is mandatory, */
+ return vxlan_gbp_encap_inline (vm, node, from_frame, /* is_ip4 */ 0,
+ /* csum_offload */ 1);
+}
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (vxlan4_gbp_encap_node) =
+{
+ .function = vxlan4_gbp_encap,
+ .name = "vxlan4-gbp-encap",
+ .vector_size = sizeof (u32),
+ .format_trace = format_vxlan_gbp_encap_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+ .n_errors = ARRAY_LEN (vxlan_gbp_encap_error_strings),
+ .error_strings = vxlan_gbp_encap_error_strings,
+ .n_next_nodes = VXLAN_GBP_ENCAP_N_NEXT,
+ .next_nodes = {
+ [VXLAN_GBP_ENCAP_NEXT_DROP] = "error-drop",
+ },
+};
+
+VLIB_NODE_FUNCTION_MULTIARCH (vxlan4_gbp_encap_node, vxlan4_gbp_encap)
+
+VLIB_REGISTER_NODE (vxlan6_gbp_encap_node) =
+{
+ .function = vxlan6_gbp_encap,
+ .name = "vxlan6-gbp-encap",
+ .vector_size = sizeof (u32),
+ .format_trace = format_vxlan_gbp_encap_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+ .n_errors = ARRAY_LEN (vxlan_gbp_encap_error_strings),
+ .error_strings = vxlan_gbp_encap_error_strings,
+ .n_next_nodes = VXLAN_GBP_ENCAP_N_NEXT,
+ .next_nodes = {
+ [VXLAN_GBP_ENCAP_NEXT_DROP] = "error-drop",
+ },
+};
+
+VLIB_NODE_FUNCTION_MULTIARCH (vxlan6_gbp_encap_node, vxlan6_gbp_encap)
+/* *INDENT-ON* */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
--- /dev/null
+/*
+ * 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.
+ */
+
+option version = "1.0.0";
+
+/** \brief Create or delete a VXLAN-GBP tunnel
+ @param client_index - opaque cookie to identify the sender
+ @param context - sender context, to match reply w/ request
+ @param is_add - Use 1 to create the tunnel, 0 to remove it
+ @param is_ipv6 - Use 0 for IPv4, 1 for IPv6
+ @param instance - optional unique custom device instance, else ~0.
+ @param src_address - Source IP address
+ @param dst_address - Destination IP address, can be multicast
+ @param mcast_sw_if_index - Interface for multicast destination
+ @param encap_vrf_id - Encap route table FIB index
+ @param decap_next_index - Name of decap next graph node
+ @param vni - The VXLAN Network Identifier, uint24
+ @param sclass - The policy group id
+*/
+define vxlan_gbp_add_del_tunnel
+{
+ u32 client_index;
+ u32 context;
+ u8 is_add;
+ u8 is_ipv6;
+ u32 instance; /* If non-~0, specifies a custom dev instance */
+ u8 src_address[16];
+ u8 dst_address[16];
+ u32 mcast_sw_if_index;
+ u32 encap_vrf_id;
+ u32 decap_next_index;
+ u32 vni;
+ u16 sclass;
+};
+
+define vxlan_gbp_add_del_tunnel_reply
+{
+ u32 context;
+ i32 retval;
+ u32 sw_if_index;
+};
+
+define vxlan_gbp_tunnel_dump
+{
+ u32 client_index;
+ u32 context;
+ u32 sw_if_index;
+};
+
+define vxlan_gbp_tunnel_details
+{
+ u32 context;
+ u32 sw_if_index;
+ u32 instance;
+ u8 src_address[16];
+ u8 dst_address[16];
+ u32 mcast_sw_if_index;
+ u32 encap_vrf_id;
+ u32 decap_next_index;
+ u32 vni;
+ u16 sclass;
+ u8 is_ipv6;
+};
+
+/** \brief Interface set vxlan-bypass request
+ @param client_index - opaque cookie to identify the sender
+ @param context - sender context, to match reply w/ request
+ @param sw_if_index - interface used to reach neighbor
+ @param is_ipv6 - if non-zero, enable ipv6-vxlan-bypass, else ipv4-vxlan-bypass
+ @param enable - if non-zero enable, else disable
+*/
+autoreply define sw_interface_set_vxlan_gbp_bypass
+{
+ u32 client_index;
+ u32 context;
+ u32 sw_if_index;
+ u8 is_ipv6;
+ u8 enable;
+};
+
--- /dev/null
+/*
+ * 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.
+ */
+#include <vnet/vxlan-gbp/vxlan_gbp.h>
+#include <vnet/ip/format.h>
+#include <vnet/fib/fib_entry.h>
+#include <vnet/fib/fib_table.h>
+#include <vnet/mfib/mfib_table.h>
+#include <vnet/adj/adj_mcast.h>
+#include <vnet/adj/rewrite.h>
+#include <vnet/interface.h>
+#include <vlib/vlib.h>
+
+/**
+ * @file
+ * @brief VXLAN GBP.
+ *
+ * VXLAN GBP provides the features of vxlan and carry group policy id.
+ */
+
+
+vxlan_gbp_main_t vxlan_gbp_main;
+
+static u8 *
+format_decap_next (u8 * s, va_list * args)
+{
+ u32 next_index = va_arg (*args, u32);
+
+ if (next_index == VXLAN_GBP_INPUT_NEXT_DROP)
+ return format (s, "drop");
+ else
+ return format (s, "index %d", next_index);
+ return s;
+}
+
+u8 *
+format_vxlan_gbp_tunnel (u8 * s, va_list * args)
+{
+ vxlan_gbp_tunnel_t *t = va_arg (*args, vxlan_gbp_tunnel_t *);
+
+ s = format (s,
+ "[%d] instance %d src %U dst %U vni %d fib-idx %d"
+ " sw-if-idx %d ",
+ t->dev_instance, t->user_instance,
+ format_ip46_address, &t->src, IP46_TYPE_ANY,
+ format_ip46_address, &t->dst, IP46_TYPE_ANY,
+ t->vni, t->encap_fib_index, t->sw_if_index);
+
+ s = format (s, "encap-dpo-idx %d ", t->next_dpo.dpoi_index);
+
+ if (PREDICT_FALSE (t->decap_next_index != VXLAN_GBP_INPUT_NEXT_L2_INPUT))
+ s = format (s, "decap-next-%U ", format_decap_next, t->decap_next_index);
+
+ if (PREDICT_FALSE (ip46_address_is_multicast (&t->dst)))
+ s = format (s, "mcast-sw-if-idx %d ", t->mcast_sw_if_index);
+
+ return s;
+}
+
+static u8 *
+format_vxlan_gbp_name (u8 * s, va_list * args)
+{
+ u32 dev_instance = va_arg (*args, u32);
+ vxlan_gbp_main_t *vxm = &vxlan_gbp_main;
+ vxlan_gbp_tunnel_t *t;
+
+ if (dev_instance == ~0)
+ return format (s, "<cached-unused>");
+
+ if (dev_instance >= vec_len (vxm->tunnels))
+ return format (s, "<improperly-referenced>");
+
+ t = pool_elt_at_index (vxm->tunnels, dev_instance);
+
+ return format (s, "vxlan_gbp_tunnel%d", t->user_instance);
+}
+
+static clib_error_t *
+vxlan_gbp_interface_admin_up_down (vnet_main_t * vnm, u32 hw_if_index,
+ u32 flags)
+{
+ u32 hw_flags = (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) ?
+ VNET_HW_INTERFACE_FLAG_LINK_UP : 0;
+ vnet_hw_interface_set_flags (vnm, hw_if_index, hw_flags);
+
+ return /* no error */ 0;
+}
+
+/* *INDENT-OFF* */
+VNET_DEVICE_CLASS (vxlan_gbp_device_class, static) = {
+ .name = "VXLAN-GBP",
+ .format_device_name = format_vxlan_gbp_name,
+ .format_tx_trace = format_vxlan_gbp_encap_trace,
+ .admin_up_down_function = vxlan_gbp_interface_admin_up_down,
+};
+/* *INDENT-ON* */
+
+static u8 *
+format_vxlan_gbp_header_with_length (u8 * s, va_list * args)
+{
+ u32 dev_instance = va_arg (*args, u32);
+ s = format (s, "unimplemented dev %u", dev_instance);
+ return s;
+}
+
+/* *INDENT-OFF* */
+VNET_HW_INTERFACE_CLASS (vxlan_gbp_hw_class) = {
+ .name = "VXLAN-GBP",
+ .format_header = format_vxlan_gbp_header_with_length,
+ .build_rewrite = default_build_rewrite,
+};
+/* *INDENT-ON* */
+
+static void
+vxlan_gbp_tunnel_restack_dpo (vxlan_gbp_tunnel_t * t)
+{
+ u8 is_ip4 = ip46_address_is_ip4 (&t->dst);
+ dpo_id_t dpo = DPO_INVALID;
+ fib_forward_chain_type_t forw_type = is_ip4 ?
+ FIB_FORW_CHAIN_TYPE_UNICAST_IP4 : FIB_FORW_CHAIN_TYPE_UNICAST_IP6;
+
+ fib_entry_contribute_forwarding (t->fib_entry_index, forw_type, &dpo);
+
+ /* vxlan_gbp uses the payload hash as the udp source port
+ * hence the packet's hash is unknown
+ * skip single bucket load balance dpo's */
+ while (DPO_LOAD_BALANCE == dpo.dpoi_type)
+ {
+ load_balance_t *lb = load_balance_get (dpo.dpoi_index);
+ if (lb->lb_n_buckets > 1)
+ break;
+
+ dpo_copy (&dpo, load_balance_get_bucket_i (lb, 0));
+ }
+
+ u32 encap_index = is_ip4 ?
+ vxlan4_gbp_encap_node.index : vxlan6_gbp_encap_node.index;
+ dpo_stack_from_node (encap_index, &t->next_dpo, &dpo);
+ dpo_reset (&dpo);
+}
+
+static vxlan_gbp_tunnel_t *
+vxlan_gbp_tunnel_from_fib_node (fib_node_t * node)
+{
+ ASSERT (FIB_NODE_TYPE_VXLAN_GBP_TUNNEL == node->fn_type);
+ return ((vxlan_gbp_tunnel_t *) (((char *) node) -
+ STRUCT_OFFSET_OF (vxlan_gbp_tunnel_t,
+ node)));
+}
+
+/**
+ * Function definition to backwalk a FIB node -
+ * Here we will restack the new dpo of VXLAN DIP to encap node.
+ */
+static fib_node_back_walk_rc_t
+vxlan_gbp_tunnel_back_walk (fib_node_t * node, fib_node_back_walk_ctx_t * ctx)
+{
+ vxlan_gbp_tunnel_restack_dpo (vxlan_gbp_tunnel_from_fib_node (node));
+ return (FIB_NODE_BACK_WALK_CONTINUE);
+}
+
+/**
+ * Function definition to get a FIB node from its index
+ */
+static fib_node_t *
+vxlan_gbp_tunnel_fib_node_get (fib_node_index_t index)
+{
+ vxlan_gbp_tunnel_t *t;
+ vxlan_gbp_main_t *vxm = &vxlan_gbp_main;
+
+ t = pool_elt_at_index (vxm->tunnels, index);
+
+ return (&t->node);
+}
+
+/**
+ * Function definition to inform the FIB node that its last lock has gone.
+ */
+static void
+vxlan_gbp_tunnel_last_lock_gone (fib_node_t * node)
+{
+ /*
+ * The VXLAN GBP tunnel is a root of the graph. As such
+ * it never has children and thus is never locked.
+ */
+ ASSERT (0);
+}
+
+/*
+ * Virtual function table registered by VXLAN GBP tunnels
+ * for participation in the FIB object graph.
+ */
+const static fib_node_vft_t vxlan_gbp_vft = {
+ .fnv_get = vxlan_gbp_tunnel_fib_node_get,
+ .fnv_last_lock = vxlan_gbp_tunnel_last_lock_gone,
+ .fnv_back_walk = vxlan_gbp_tunnel_back_walk,
+};
+
+
+#define foreach_copy_field \
+_(vni) \
+_(mcast_sw_if_index) \
+_(encap_fib_index) \
+_(decap_next_index) \
+_(src) \
+_(dst)
+
+static void
+vxlan_gbp_rewrite (vxlan_gbp_tunnel_t * t, bool is_ip6)
+{
+ union
+ {
+ ip4_vxlan_gbp_header_t h4;
+ ip6_vxlan_gbp_header_t h6;
+ } h;
+ int len = is_ip6 ? sizeof h.h6 : sizeof h.h4;
+
+ udp_header_t *udp;
+ vxlan_gbp_header_t *vxlan_gbp;
+ /* Fixed portion of the (outer) ip header */
+
+ memset (&h, 0, sizeof (h));
+ if (!is_ip6)
+ {
+ ip4_header_t *ip = &h.h4.ip4;
+ udp = &h.h4.udp, vxlan_gbp = &h.h4.vxlan_gbp;
+ ip->ip_version_and_header_length = 0x45;
+ ip->ttl = 254;
+ ip->protocol = IP_PROTOCOL_UDP;
+
+ ip->src_address = t->src.ip4;
+ ip->dst_address = t->dst.ip4;
+
+ /* we fix up the ip4 header length and checksum after-the-fact */
+ ip->checksum = ip4_header_checksum (ip);
+ }
+ else
+ {
+ ip6_header_t *ip = &h.h6.ip6;
+ udp = &h.h6.udp, vxlan_gbp = &h.h6.vxlan_gbp;
+ ip->ip_version_traffic_class_and_flow_label =
+ clib_host_to_net_u32 (6 << 28);
+ ip->hop_limit = 255;
+ ip->protocol = IP_PROTOCOL_UDP;
+
+ ip->src_address = t->src.ip6;
+ ip->dst_address = t->dst.ip6;
+ }
+
+ /* UDP header, randomize src port on something, maybe? */
+ udp->src_port = clib_host_to_net_u16 (47789);
+ udp->dst_port = clib_host_to_net_u16 (UDP_DST_PORT_vxlan_gbp);
+
+ /* VXLAN header */
+ vxlan_gbp_set_header (vxlan_gbp, t->vni);
+ vnet_rewrite_set_data (*t, &h, len);
+}
+
+static bool
+vxlan_gbp_decap_next_is_valid (vxlan_gbp_main_t * vxm, u32 is_ip6,
+ u32 decap_next_index)
+{
+ vlib_main_t *vm = vxm->vlib_main;
+ u32 input_idx = (!is_ip6) ?
+ vxlan4_gbp_input_node.index : vxlan6_gbp_input_node.index;
+ vlib_node_runtime_t *r = vlib_node_get_runtime (vm, input_idx);
+
+ return decap_next_index < r->n_next_nodes;
+}
+
+static uword
+vtep_addr_ref (ip46_address_t * ip)
+{
+ uword *vtep = ip46_address_is_ip4 (ip) ?
+ hash_get (vxlan_gbp_main.vtep4, ip->ip4.as_u32) :
+ hash_get_mem (vxlan_gbp_main.vtep6, &ip->ip6);
+ if (vtep)
+ return ++(*vtep);
+ ip46_address_is_ip4 (ip) ?
+ hash_set (vxlan_gbp_main.vtep4, ip->ip4.as_u32, 1) :
+ hash_set_mem_alloc (&vxlan_gbp_main.vtep6, &ip->ip6, 1);
+ return 1;
+}
+
+static uword
+vtep_addr_unref (ip46_address_t * ip)
+{
+ uword *vtep = ip46_address_is_ip4 (ip) ?
+ hash_get (vxlan_gbp_main.vtep4, ip->ip4.as_u32) :
+ hash_get_mem (vxlan_gbp_main.vtep6, &ip->ip6);
+ ASSERT (vtep);
+ if (--(*vtep) != 0)
+ return *vtep;
+ ip46_address_is_ip4 (ip) ?
+ hash_unset (vxlan_gbp_main.vtep4, ip->ip4.as_u32) :
+ hash_unset_mem_free (&vxlan_gbp_main.vtep6, &ip->ip6);
+ return 0;
+}
+
+/* *INDENT-OFF* */
+typedef CLIB_PACKED(union
+{
+ struct
+ {
+ fib_node_index_t mfib_entry_index;
+ adj_index_t mcast_adj_index;
+ };
+ u64 as_u64;
+}) mcast_shared_t;
+/* *INDENT-ON* */
+
+static inline mcast_shared_t
+mcast_shared_get (ip46_address_t * ip)
+{
+ ASSERT (ip46_address_is_multicast (ip));
+ uword *p = hash_get_mem (vxlan_gbp_main.mcast_shared, ip);
+ ASSERT (p);
+ mcast_shared_t ret = {.as_u64 = *p };
+ return ret;
+}
+
+static inline void
+mcast_shared_add (ip46_address_t * dst, fib_node_index_t mfei, adj_index_t ai)
+{
+ mcast_shared_t new_ep = {
+ .mcast_adj_index = ai,
+ .mfib_entry_index = mfei,
+ };
+
+ hash_set_mem_alloc (&vxlan_gbp_main.mcast_shared, dst, new_ep.as_u64);
+}
+
+static inline void
+mcast_shared_remove (ip46_address_t * dst)
+{
+ mcast_shared_t ep = mcast_shared_get (dst);
+
+ adj_unlock (ep.mcast_adj_index);
+ mfib_table_entry_delete_index (ep.mfib_entry_index, MFIB_SOURCE_VXLAN_GBP);
+
+ hash_unset_mem_free (&vxlan_gbp_main.mcast_shared, dst);
+}
+
+int vnet_vxlan_gbp_add_del_tunnel
+ (vnet_vxlan_gbp_add_del_tunnel_args_t * a, u32 * sw_if_indexp)
+{
+ vxlan_gbp_main_t *vxm = &vxlan_gbp_main;
+ vxlan_gbp_tunnel_t *t = 0;
+ vnet_main_t *vnm = vxm->vnet_main;
+ u64 *p;
+ u32 sw_if_index = ~0;
+ vxlan4_gbp_tunnel_key_t key4;
+ vxlan6_gbp_tunnel_key_t key6;
+ u32 is_ip6 = a->is_ip6;
+
+ int not_found;
+ if (!is_ip6)
+ {
+ key4.key[0] = a->dst.ip4.as_u32;
+ key4.key[1] = (((u64) a->encap_fib_index) << 32)
+ | clib_host_to_net_u32 (a->vni << 8);
+ not_found =
+ clib_bihash_search_inline_16_8 (&vxm->vxlan4_gbp_tunnel_by_key,
+ &key4);
+ p = &key4.value;
+ }
+ else
+ {
+ key6.key[0] = a->dst.ip6.as_u64[0];
+ key6.key[1] = a->dst.ip6.as_u64[1];
+ key6.key[2] = (((u64) a->encap_fib_index) << 32)
+ | clib_host_to_net_u32 (a->vni << 8);
+ not_found =
+ clib_bihash_search_inline_24_8 (&vxm->vxlan6_gbp_tunnel_by_key,
+ &key6);
+ p = &key6.value;
+ }
+
+ if (not_found)
+ p = 0;
+
+ if (a->is_add)
+ {
+ l2input_main_t *l2im = &l2input_main;
+ u32 dev_instance; /* real dev instance tunnel index */
+ u32 user_instance; /* request and actual instance number */
+
+ /* adding a tunnel: tunnel must not already exist */
+ if (p)
+ return VNET_API_ERROR_TUNNEL_EXIST;
+
+ /* if not set explicitly, default to l2 */
+ if (a->decap_next_index == ~0)
+ a->decap_next_index = VXLAN_GBP_INPUT_NEXT_L2_INPUT;
+ if (!vxlan_gbp_decap_next_is_valid (vxm, is_ip6, a->decap_next_index))
+ return VNET_API_ERROR_INVALID_DECAP_NEXT;
+
+ pool_get_aligned (vxm->tunnels, t, CLIB_CACHE_LINE_BYTES);
+ memset (t, 0, sizeof (*t));
+ dev_instance = t - vxm->tunnels;
+
+ /* copy from arg structure */
+#define _(x) t->x = a->x;
+ foreach_copy_field;
+#undef _
+
+ vxlan_gbp_rewrite (t, is_ip6);
+ /*
+ * Reconcile the real dev_instance and a possible requested instance.
+ */
+ user_instance = a->instance;
+ if (user_instance == ~0)
+ user_instance = dev_instance;
+ if (hash_get (vxm->instance_used, user_instance))
+ {
+ pool_put (vxm->tunnels, t);
+ return VNET_API_ERROR_INSTANCE_IN_USE;
+ }
+ hash_set (vxm->instance_used, user_instance, 1);
+
+ t->dev_instance = dev_instance; /* actual */
+ t->user_instance = user_instance; /* name */
+
+ /* copy the key */
+ int add_failed;
+ if (is_ip6)
+ {
+ key6.value = (u64) dev_instance;
+ add_failed =
+ clib_bihash_add_del_24_8 (&vxm->vxlan6_gbp_tunnel_by_key, &key6,
+ 1 /*add */ );
+ }
+ else
+ {
+ key4.value = (u64) dev_instance;
+ add_failed =
+ clib_bihash_add_del_16_8 (&vxm->vxlan4_gbp_tunnel_by_key, &key4,
+ 1 /*add */ );
+ }
+
+ if (add_failed)
+ {
+ pool_put (vxm->tunnels, t);
+ return VNET_API_ERROR_INVALID_REGISTRATION;
+ }
+
+ t->hw_if_index = vnet_register_interface
+ (vnm, vxlan_gbp_device_class.index, dev_instance,
+ vxlan_gbp_hw_class.index, dev_instance);
+ vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, t->hw_if_index);
+
+ /* Set vxlan_gbp tunnel output node */
+ u32 encap_index = !is_ip6 ?
+ vxlan4_gbp_encap_node.index : vxlan6_gbp_encap_node.index;
+ vnet_set_interface_output_node (vnm, t->hw_if_index, encap_index);
+
+ t->sw_if_index = sw_if_index = hi->sw_if_index;
+
+ vec_validate_init_empty (vxm->tunnel_index_by_sw_if_index, sw_if_index,
+ ~0);
+ vxm->tunnel_index_by_sw_if_index[sw_if_index] = dev_instance;
+
+ /* setup l2 input config with l2 feature and bd 0 to drop packet */
+ vec_validate (l2im->configs, sw_if_index);
+ l2im->configs[sw_if_index].feature_bitmap = L2INPUT_FEAT_DROP;
+ l2im->configs[sw_if_index].bd_index = 0;
+
+ vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, sw_if_index);
+ si->flags &= ~VNET_SW_INTERFACE_FLAG_HIDDEN;
+ vnet_sw_interface_set_flags (vnm, sw_if_index,
+ VNET_SW_INTERFACE_FLAG_ADMIN_UP);
+
+ fib_node_init (&t->node, FIB_NODE_TYPE_VXLAN_GBP_TUNNEL);
+ fib_prefix_t tun_dst_pfx;
+ vnet_flood_class_t flood_class = VNET_FLOOD_CLASS_TUNNEL_NORMAL;
+
+ fib_prefix_from_ip46_addr (&t->dst, &tun_dst_pfx);
+ if (!ip46_address_is_multicast (&t->dst))
+ {
+ /* Unicast tunnel -
+ * source the FIB entry for the tunnel's destination
+ * and become a child thereof. The tunnel will then get poked
+ * when the forwarding for the entry updates, and the tunnel can
+ * re-stack accordingly
+ */
+ vtep_addr_ref (&t->src);
+ t->fib_entry_index = fib_table_entry_special_add
+ (t->encap_fib_index, &tun_dst_pfx, FIB_SOURCE_RR,
+ FIB_ENTRY_FLAG_NONE);
+ t->sibling_index = fib_entry_child_add
+ (t->fib_entry_index, FIB_NODE_TYPE_VXLAN_GBP_TUNNEL,
+ dev_instance);
+ vxlan_gbp_tunnel_restack_dpo (t);
+ }
+ else
+ {
+ /* Multicast tunnel -
+ * as the same mcast group can be used for mutiple mcast tunnels
+ * with different VNIs, create the output fib adjecency only if
+ * it does not already exist
+ */
+ fib_protocol_t fp = fib_ip_proto (is_ip6);
+
+ if (vtep_addr_ref (&t->dst) == 1)
+ {
+ fib_node_index_t mfei;
+ adj_index_t ai;
+ fib_route_path_t path = {
+ .frp_proto = fib_proto_to_dpo (fp),
+ .frp_addr = zero_addr,
+ .frp_sw_if_index = 0xffffffff,
+ .frp_fib_index = ~0,
+ .frp_weight = 0,
+ .frp_flags = FIB_ROUTE_PATH_LOCAL,
+ };
+ const mfib_prefix_t mpfx = {
+ .fp_proto = fp,
+ .fp_len = (is_ip6 ? 128 : 32),
+ .fp_grp_addr = tun_dst_pfx.fp_addr,
+ };
+
+ /*
+ * Setup the (*,G) to receive traffic on the mcast group
+ * - the forwarding interface is for-us
+ * - the accepting interface is that from the API
+ */
+ mfib_table_entry_path_update (t->encap_fib_index,
+ &mpfx,
+ MFIB_SOURCE_VXLAN_GBP,
+ &path, MFIB_ITF_FLAG_FORWARD);
+
+ path.frp_sw_if_index = a->mcast_sw_if_index;
+ path.frp_flags = FIB_ROUTE_PATH_FLAG_NONE;
+ mfei = mfib_table_entry_path_update (t->encap_fib_index,
+ &mpfx,
+ MFIB_SOURCE_VXLAN_GBP,
+ &path,
+ MFIB_ITF_FLAG_ACCEPT);
+
+ /*
+ * Create the mcast adjacency to send traffic to the group
+ */
+ ai = adj_mcast_add_or_lock (fp,
+ fib_proto_to_link (fp),
+ a->mcast_sw_if_index);
+
+ /*
+ * create a new end-point
+ */
+ mcast_shared_add (&t->dst, mfei, ai);
+ }
+
+ dpo_id_t dpo = DPO_INVALID;
+ mcast_shared_t ep = mcast_shared_get (&t->dst);
+
+ /* Stack shared mcast dst mac addr rewrite on encap */
+ dpo_set (&dpo, DPO_ADJACENCY_MCAST,
+ fib_proto_to_dpo (fp), ep.mcast_adj_index);
+
+ dpo_stack_from_node (encap_index, &t->next_dpo, &dpo);
+ dpo_reset (&dpo);
+ flood_class = VNET_FLOOD_CLASS_TUNNEL_MASTER;
+ }
+
+ vnet_get_sw_interface (vnet_get_main (), sw_if_index)->flood_class =
+ flood_class;
+ }
+ else
+ {
+ /* deleting a tunnel: tunnel must exist */
+ if (!p)
+ return VNET_API_ERROR_NO_SUCH_ENTRY;
+
+ u32 instance = p[0];
+ t = pool_elt_at_index (vxm->tunnels, instance);
+
+ sw_if_index = t->sw_if_index;
+ vnet_sw_interface_set_flags (vnm, sw_if_index, 0 /* down */ );
+
+ vxm->tunnel_index_by_sw_if_index[sw_if_index] = ~0;
+
+ if (!is_ip6)
+ clib_bihash_add_del_16_8 (&vxm->vxlan4_gbp_tunnel_by_key, &key4,
+ 0 /*del */ );
+ else
+ clib_bihash_add_del_24_8 (&vxm->vxlan6_gbp_tunnel_by_key, &key6,
+ 0 /*del */ );
+
+ if (!ip46_address_is_multicast (&t->dst))
+ {
+ vtep_addr_unref (&t->src);
+ fib_entry_child_remove (t->fib_entry_index, t->sibling_index);
+ fib_table_entry_delete_index (t->fib_entry_index, FIB_SOURCE_RR);
+ }
+ else if (vtep_addr_unref (&t->dst) == 0)
+ {
+ mcast_shared_remove (&t->dst);
+ }
+
+ vnet_delete_hw_interface (vnm, t->hw_if_index);
+ hash_unset (vxm->instance_used, t->user_instance);
+
+ fib_node_deinit (&t->node);
+ pool_put (vxm->tunnels, t);
+ }
+
+ if (sw_if_indexp)
+ *sw_if_indexp = sw_if_index;
+
+ return 0;
+}
+
+static uword
+get_decap_next_for_node (u32 node_index, u32 ipv4_set)
+{
+ vxlan_gbp_main_t *vxm = &vxlan_gbp_main;
+ vlib_main_t *vm = vxm->vlib_main;
+ uword input_node = (ipv4_set) ? vxlan4_gbp_input_node.index :
+ vxlan6_gbp_input_node.index;
+
+ return vlib_node_add_next (vm, input_node, node_index);
+}
+
+static uword
+unformat_decap_next (unformat_input_t * input, va_list * args)
+{
+ u32 *result = va_arg (*args, u32 *);
+ u32 ipv4_set = va_arg (*args, int);
+ vxlan_gbp_main_t *vxm = &vxlan_gbp_main;
+ vlib_main_t *vm = vxm->vlib_main;
+ u32 node_index;
+ u32 tmp;
+
+ if (unformat (input, "l2"))
+ *result = VXLAN_GBP_INPUT_NEXT_L2_INPUT;
+ else if (unformat (input, "node %U", unformat_vlib_node, vm, &node_index))
+ *result = get_decap_next_for_node (node_index, ipv4_set);
+ else if (unformat (input, "%d", &tmp))
+ *result = tmp;
+ else
+ return 0;
+ return 1;
+}
+
+static clib_error_t *
+vxlan_gbp_add_del_tunnel_command_fn (vlib_main_t * vm,
+ unformat_input_t * input,
+ vlib_cli_command_t * cmd)
+{
+ unformat_input_t _line_input, *line_input = &_line_input;
+ ip46_address_t src = ip46_address_initializer, dst =
+ ip46_address_initializer;
+ u8 is_add = 1;
+ u8 src_set = 0;
+ u8 dst_set = 0;
+ u8 grp_set = 0;
+ u8 ipv4_set = 0;
+ u8 ipv6_set = 0;
+ u32 instance = ~0;
+ u32 encap_fib_index = 0;
+ u32 mcast_sw_if_index = ~0;
+ u32 decap_next_index = VXLAN_GBP_INPUT_NEXT_L2_INPUT;
+ u32 vni = 0;
+ u32 table_id;
+ clib_error_t *parse_error = NULL;
+
+ /* Get a line of input. */
+ if (!unformat_user (input, unformat_line_input, line_input))
+ return 0;
+
+ while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (line_input, "del"))
+ {
+ is_add = 0;
+ }
+ else if (unformat (line_input, "instance %d", &instance))
+ ;
+ else if (unformat (line_input, "src %U",
+ unformat_ip46_address, &src, IP46_TYPE_ANY))
+ {
+ src_set = 1;
+ ip46_address_is_ip4 (&src) ? (ipv4_set = 1) : (ipv6_set = 1);
+ }
+ else if (unformat (line_input, "dst %U",
+ unformat_ip46_address, &dst, IP46_TYPE_ANY))
+ {
+ dst_set = 1;
+ ip46_address_is_ip4 (&dst) ? (ipv4_set = 1) : (ipv6_set = 1);
+ }
+ else if (unformat (line_input, "group %U %U",
+ unformat_ip46_address, &dst, IP46_TYPE_ANY,
+ unformat_vnet_sw_interface,
+ vnet_get_main (), &mcast_sw_if_index))
+ {
+ grp_set = dst_set = 1;
+ ip46_address_is_ip4 (&dst) ? (ipv4_set = 1) : (ipv6_set = 1);
+ }
+ else if (unformat (line_input, "encap-vrf-id %d", &table_id))
+ {
+ encap_fib_index =
+ fib_table_find (fib_ip_proto (ipv6_set), table_id);
+ }
+ else if (unformat (line_input, "decap-next %U", unformat_decap_next,
+ &decap_next_index, ipv4_set))
+ ;
+ else if (unformat (line_input, "vni %d", &vni))
+ ;
+ else
+ {
+ parse_error = clib_error_return (0, "parse error: '%U'",
+ format_unformat_error, line_input);
+ break;
+ }
+ }
+
+ unformat_free (line_input);
+
+ if (parse_error)
+ return parse_error;
+
+ if (encap_fib_index == ~0)
+ return clib_error_return (0, "nonexistent encap-vrf-id %d", table_id);
+
+ if (src_set == 0)
+ return clib_error_return (0, "tunnel src address not specified");
+
+ if (dst_set == 0)
+ return clib_error_return (0, "tunnel dst address not specified");
+
+ if (grp_set && !ip46_address_is_multicast (&dst))
+ return clib_error_return (0, "tunnel group address not multicast");
+
+ if (grp_set == 0 && ip46_address_is_multicast (&dst))
+ return clib_error_return (0, "dst address must be unicast");
+
+ if (grp_set && mcast_sw_if_index == ~0)
+ return clib_error_return (0, "tunnel nonexistent multicast device");
+
+ if (ipv4_set && ipv6_set)
+ return clib_error_return (0, "both IPv4 and IPv6 addresses specified");
+
+ if (ip46_address_cmp (&src, &dst) == 0)
+ return clib_error_return (0, "src and dst addresses are identical");
+
+ if (decap_next_index == ~0)
+ return clib_error_return (0, "next node not found");
+
+ if (vni == 0)
+ return clib_error_return (0, "vni not specified");
+
+ if (vni >> 24)
+ return clib_error_return (0, "vni %d out of range", vni);
+
+ vnet_vxlan_gbp_add_del_tunnel_args_t a = {
+ .is_add = is_add,
+ .is_ip6 = ipv6_set,
+ .instance = instance,
+#define _(x) .x = x,
+ foreach_copy_field
+#undef _
+ };
+
+ u32 tunnel_sw_if_index;
+ int rv = vnet_vxlan_gbp_add_del_tunnel (&a, &tunnel_sw_if_index);
+
+ switch (rv)
+ {
+ case 0:
+ if (is_add)
+ vlib_cli_output (vm, "%U\n", format_vnet_sw_if_index_name,
+ vnet_get_main (), tunnel_sw_if_index);
+ break;
+
+ case VNET_API_ERROR_TUNNEL_EXIST:
+ return clib_error_return (0, "tunnel already exists...");
+
+ case VNET_API_ERROR_NO_SUCH_ENTRY:
+ return clib_error_return (0, "tunnel does not exist...");
+
+ case VNET_API_ERROR_INSTANCE_IN_USE:
+ return clib_error_return (0, "Instance is in use");
+
+ default:
+ return clib_error_return
+ (0, "vnet_vxlan_gbp_add_del_tunnel returned %d", rv);
+ }
+
+ return 0;
+}
+
+/*?
+ * Add or delete a VXLAN Tunnel.
+ *
+ * VXLAN provides the features needed to allow L2 bridge domains (BDs)
+ * to span multiple servers. This is done by building an L2 overlay on
+ * top of an L3 network underlay using VXLAN tunnels.
+ *
+ * This makes it possible for servers to be co-located in the same data
+ * center or be separated geographically as long as they are reachable
+ * through the underlay L3 network.
+ *
+ * You can refer to this kind of L2 overlay bridge domain as a VXLAN
+ * (Virtual eXtensible VLAN) segment.
+ *
+ * @cliexpar
+ * Example of how to create a VXLAN Tunnel:
+ * @cliexcmd{create vxlan_gbp tunnel src 10.0.3.1 dst 10.0.3.3 vni 13 encap-vrf-id 7}
+ * Example of how to create a VXLAN Tunnel with a known name, vxlan_gbp_tunnel42:
+ * @cliexcmd{create vxlan_gbp tunnel src 10.0.3.1 dst 10.0.3.3 instance 42}
+ * Example of how to create a multicast VXLAN Tunnel with a known name, vxlan_gbp_tunnel23:
+ * @cliexcmd{create vxlan_gbp tunnel src 10.0.3.1 group 239.1.1.1 GigabitEtherner0/8/0 instance 23}
+ * Example of how to delete a VXLAN Tunnel:
+ * @cliexcmd{create vxlan_gbp tunnel src 10.0.3.1 dst 10.0.3.3 vni 13 del}
+ ?*/
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (create_vxlan_gbp_tunnel_command, static) = {
+ .path = "create vxlan-gbp tunnel",
+ .short_help =
+ "create vxlan-gbp tunnel src <local-vtep-addr>"
+ " {dst <remote-vtep-addr>|group <mcast-vtep-addr> <intf-name>} vni <nn>"
+ " [instance <id>]"
+ " [encap-vrf-id <nn>] [decap-next [l2|node <name>]] [del]",
+ .function = vxlan_gbp_add_del_tunnel_command_fn,
+};
+/* *INDENT-ON* */
+
+static clib_error_t *
+show_vxlan_gbp_tunnel_command_fn (vlib_main_t * vm,
+ unformat_input_t * input,
+ vlib_cli_command_t * cmd)
+{
+ vxlan_gbp_main_t *vxm = &vxlan_gbp_main;
+ vxlan_gbp_tunnel_t *t;
+ int raw = 0;
+
+ while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (input, "raw"))
+ raw = 1;
+ else
+ return clib_error_return (0, "parse error: '%U'",
+ format_unformat_error, input);
+ }
+
+ if (pool_elts (vxm->tunnels) == 0)
+ vlib_cli_output (vm, "No vxlan-gbp tunnels configured...");
+
+/* *INDENT-OFF* */
+ pool_foreach (t, vxm->tunnels,
+ ({
+ vlib_cli_output (vm, "%U", format_vxlan_gbp_tunnel, t);
+ }));
+/* *INDENT-ON* */
+
+ if (raw)
+ {
+ vlib_cli_output (vm, "Raw IPv4 Hash Table:\n%U\n",
+ format_bihash_16_8, &vxm->vxlan4_gbp_tunnel_by_key,
+ 1 /* verbose */ );
+ vlib_cli_output (vm, "Raw IPv6 Hash Table:\n%U\n",
+ format_bihash_24_8, &vxm->vxlan6_gbp_tunnel_by_key,
+ 1 /* verbose */ );
+ }
+
+ return 0;
+}
+
+/*?
+ * Display all the VXLAN Tunnel entries.
+ *
+ * @cliexpar
+ * Example of how to display the VXLAN Tunnel entries:
+ * @cliexstart{show vxlan_gbp tunnel}
+ * [0] src 10.0.3.1 dst 10.0.3.3 vni 13 encap_fib_index 0 sw_if_index 5 decap_next l2
+ * @cliexend
+ ?*/
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (show_vxlan_gbp_tunnel_command, static) = {
+ .path = "show vxlan-gbp tunnel",
+ .short_help = "show vxlan-gbp tunnel [raw]",
+ .function = show_vxlan_gbp_tunnel_command_fn,
+};
+/* *INDENT-ON* */
+
+
+void
+vnet_int_vxlan_gbp_bypass_mode (u32 sw_if_index, u8 is_ip6, u8 is_enable)
+{
+ if (is_ip6)
+ vnet_feature_enable_disable ("ip6-unicast", "ip6-vxlan-gbp-bypass",
+ sw_if_index, is_enable, 0, 0);
+ else
+ vnet_feature_enable_disable ("ip4-unicast", "ip4-vxlan-gbp-bypass",
+ sw_if_index, is_enable, 0, 0);
+}
+
+
+static clib_error_t *
+set_ip_vxlan_gbp_bypass (u32 is_ip6,
+ unformat_input_t * input, vlib_cli_command_t * cmd)
+{
+ unformat_input_t _line_input, *line_input = &_line_input;
+ vnet_main_t *vnm = vnet_get_main ();
+ clib_error_t *error = 0;
+ u32 sw_if_index, is_enable;
+
+ sw_if_index = ~0;
+ is_enable = 1;
+
+ if (!unformat_user (input, unformat_line_input, line_input))
+ return 0;
+
+ while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat_user
+ (line_input, unformat_vnet_sw_interface, vnm, &sw_if_index))
+ ;
+ else if (unformat (line_input, "del"))
+ is_enable = 0;
+ else
+ {
+ error = unformat_parse_error (line_input);
+ goto done;
+ }
+ }
+
+ if (~0 == sw_if_index)
+ {
+ error = clib_error_return (0, "unknown interface `%U'",
+ format_unformat_error, line_input);
+ goto done;
+ }
+
+ vnet_int_vxlan_gbp_bypass_mode (sw_if_index, is_ip6, is_enable);
+
+done:
+ unformat_free (line_input);
+
+ return error;
+}
+
+static clib_error_t *
+set_ip4_vxlan_gbp_bypass (vlib_main_t * vm,
+ unformat_input_t * input, vlib_cli_command_t * cmd)
+{
+ return set_ip_vxlan_gbp_bypass (0, input, cmd);
+}
+
+/*?
+ * This command adds the 'ip4-vxlan-gbp-bypass' graph node for a given interface.
+ * By adding the IPv4 vxlan_gbp-bypass graph node to an interface, the node checks
+ * for and validate input vxlan_gbp packet and bypass ip4-lookup, ip4-local,
+ * ip4-udp-lookup nodes to speedup vxlan_gbp packet forwarding. This node will
+ * cause extra overhead to for non-vxlan_gbp packets which is kept at a minimum.
+ *
+ * @cliexpar
+ * @parblock
+ * Example of graph node before ip4-vxlan_gbp-bypass is enabled:
+ * @cliexstart{show vlib graph ip4-vxlan_gbp-bypass}
+ * Name Next Previous
+ * ip4-vxlan-gbp-bypass error-drop [0]
+ * vxlan4-gbp-input [1]
+ * ip4-lookup [2]
+ * @cliexend
+ *
+ * Example of how to enable ip4-vxlan-gbp-bypass on an interface:
+ * @cliexcmd{set interface ip vxlan-gbp-bypass GigabitEthernet2/0/0}
+ *
+ * Example of graph node after ip4-vxlan-gbp-bypass is enabled:
+ * @cliexstart{show vlib graph ip4-vxlan-gbp-bypass}
+ * Name Next Previous
+ * ip4-vxlan-gbp-bypass error-drop [0] ip4-input
+ * vxlan4-gbp-input [1] ip4-input-no-checksum
+ * ip4-lookup [2]
+ * @cliexend
+ *
+ * Example of how to display the feature enabed on an interface:
+ * @cliexstart{show ip interface features GigabitEthernet2/0/0}
+ * IP feature paths configured on GigabitEthernet2/0/0...
+ * ...
+ * ipv4 unicast:
+ * ip4-vxlan-gbp-bypass
+ * ip4-lookup
+ * ...
+ * @cliexend
+ *
+ * Example of how to disable ip4-vxlan-gbp-bypass on an interface:
+ * @cliexcmd{set interface ip vxlan-gbp-bypass GigabitEthernet2/0/0 del}
+ * @endparblock
+?*/
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (set_interface_ip_vxlan_gbp_bypass_command, static) = {
+ .path = "set interface ip vxlan-gbp-bypass",
+ .function = set_ip4_vxlan_gbp_bypass,
+ .short_help = "set interface ip vxlan-gbp-bypass <interface> [del]",
+};
+/* *INDENT-ON* */
+
+static clib_error_t *
+set_ip6_vxlan_gbp_bypass (vlib_main_t * vm,
+ unformat_input_t * input, vlib_cli_command_t * cmd)
+{
+ return set_ip_vxlan_gbp_bypass (1, input, cmd);
+}
+
+/*?
+ * This command adds the 'ip6-vxlan-gbp-bypass' graph node for a given interface.
+ * By adding the IPv6 vxlan-gbp-bypass graph node to an interface, the node checks
+ * for and validate input vxlan_gbp packet and bypass ip6-lookup, ip6-local,
+ * ip6-udp-lookup nodes to speedup vxlan_gbp packet forwarding. This node will
+ * cause extra overhead to for non-vxlan packets which is kept at a minimum.
+ *
+ * @cliexpar
+ * @parblock
+ * Example of graph node before ip6-vxlan-gbp-bypass is enabled:
+ * @cliexstart{show vlib graph ip6-vxlan-gbp-bypass}
+ * Name Next Previous
+ * ip6-vxlan-gbp-bypass error-drop [0]
+ * vxlan6-gbp-input [1]
+ * ip6-lookup [2]
+ * @cliexend
+ *
+ * Example of how to enable ip6-vxlan-gbp-bypass on an interface:
+ * @cliexcmd{set interface ip6 vxlan-gbp-bypass GigabitEthernet2/0/0}
+ *
+ * Example of graph node after ip6-vxlan-gbp-bypass is enabled:
+ * @cliexstart{show vlib graph ip6-vxlan-gbp-bypass}
+ * Name Next Previous
+ * ip6-vxlan-gbp-bypass error-drop [0] ip6-input
+ * vxlan6-gbp-input [1] ip4-input-no-checksum
+ * ip6-lookup [2]
+ * @cliexend
+ *
+ * Example of how to display the feature enabed on an interface:
+ * @cliexstart{show ip interface features GigabitEthernet2/0/0}
+ * IP feature paths configured on GigabitEthernet2/0/0...
+ * ...
+ * ipv6 unicast:
+ * ip6-vxlan-gbp-bypass
+ * ip6-lookup
+ * ...
+ * @cliexend
+ *
+ * Example of how to disable ip6-vxlan-gbp-bypass on an interface:
+ * @cliexcmd{set interface ip6 vxlan-gbp-bypass GigabitEthernet2/0/0 del}
+ * @endparblock
+?*/
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (set_interface_ip6_vxlan_gbp_bypass_command, static) = {
+ .path = "set interface ip6 vxlan-gbp-bypass",
+ .function = set_ip6_vxlan_gbp_bypass,
+ .short_help = "set interface ip vxlan-gbp-bypass <interface> [del]",
+};
+/* *INDENT-ON* */
+
+#define VXLAN_GBP_HASH_NUM_BUCKETS (2 * 1024)
+#define VXLAN_GBP_HASH_MEMORY_SIZE (1 << 20)
+
+clib_error_t *
+vxlan_gbp_init (vlib_main_t * vm)
+{
+ vxlan_gbp_main_t *vxm = &vxlan_gbp_main;
+
+ vxm->vnet_main = vnet_get_main ();
+ vxm->vlib_main = vm;
+
+ /* initialize the ip6 hash */
+ clib_bihash_init_16_8 (&vxm->vxlan4_gbp_tunnel_by_key, "vxlan4-gbp",
+ VXLAN_GBP_HASH_NUM_BUCKETS,
+ VXLAN_GBP_HASH_MEMORY_SIZE);
+ clib_bihash_init_24_8 (&vxm->vxlan6_gbp_tunnel_by_key, "vxlan6-gbp",
+ VXLAN_GBP_HASH_NUM_BUCKETS,
+ VXLAN_GBP_HASH_MEMORY_SIZE);
+ vxm->vtep6 = hash_create_mem (0, sizeof (ip6_address_t), sizeof (uword));
+ vxm->mcast_shared = hash_create_mem (0,
+ sizeof (ip46_address_t),
+ sizeof (mcast_shared_t));
+
+ udp_register_dst_port (vm, UDP_DST_PORT_vxlan_gbp,
+ vxlan4_gbp_input_node.index, /* is_ip4 */ 1);
+ udp_register_dst_port (vm, UDP_DST_PORT_vxlan6_gbp,
+ vxlan6_gbp_input_node.index, /* is_ip4 */ 0);
+
+ fib_node_register_type (FIB_NODE_TYPE_VXLAN_GBP_TUNNEL, &vxlan_gbp_vft);
+
+ return 0;
+}
+
+VLIB_INIT_FUNCTION (vxlan_gbp_init);
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
--- /dev/null
+/*
+ * 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 included_vnet_vxlan_gbp_h
+#define included_vnet_vxlan_gbp_h
+
+#include <vppinfra/error.h>
+#include <vppinfra/hash.h>
+#include <vppinfra/bihash_16_8.h>
+#include <vppinfra/bihash_24_8.h>
+#include <vnet/vnet.h>
+#include <vnet/ip/ip.h>
+#include <vnet/l2/l2_input.h>
+#include <vnet/l2/l2_output.h>
+#include <vnet/l2/l2_bd.h>
+#include <vnet/ethernet/ethernet.h>
+#include <vnet/vxlan-gbp/vxlan_gbp_packet.h>
+#include <vnet/ip/ip4_packet.h>
+#include <vnet/ip/ip6_packet.h>
+#include <vnet/udp/udp.h>
+#include <vnet/dpo/dpo.h>
+#include <vnet/adj/adj_types.h>
+
+/* *INDENT-OFF* */
+typedef CLIB_PACKED (struct {
+ ip4_header_t ip4; /* 20 bytes */
+ udp_header_t udp; /* 8 bytes */
+ vxlan_gbp_header_t vxlan_gbp; /* 8 bytes */
+}) ip4_vxlan_gbp_header_t;
+
+typedef CLIB_PACKED (struct {
+ ip6_header_t ip6; /* 40 bytes */
+ udp_header_t udp; /* 8 bytes */
+ vxlan_gbp_header_t vxlan_gbp; /* 8 bytes */
+}) ip6_vxlan_gbp_header_t;
+/* *INDENT-ON* */
+
+/*
+* Key fields: remote ip, vni on incoming VXLAN packet
+* all fields in NET byte order
+*/
+typedef clib_bihash_kv_16_8_t vxlan4_gbp_tunnel_key_t;
+
+/*
+* Key fields: remote ip, vni and fib index on incoming VXLAN packet
+* ip, vni fields in NET byte order
+* fib index field in host byte order
+*/
+typedef clib_bihash_kv_24_8_t vxlan6_gbp_tunnel_key_t;
+
+typedef struct
+{
+ /* Required for pool_get_aligned */
+ CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
+
+ /* FIB DPO for IP forwarding of VXLAN encap packet */
+ dpo_id_t next_dpo;
+
+ /* Group Policy ID */
+ u16 sclass;
+
+ /* flags */
+ u16 flags;
+
+ /* vxlan VNI in HOST byte order */
+ u32 vni;
+
+ /* tunnel src and dst addresses */
+ ip46_address_t src;
+ ip46_address_t dst;
+
+ /* mcast packet output intfc index (used only if dst is mcast) */
+ u32 mcast_sw_if_index;
+
+ /* decap next index */
+ u32 decap_next_index;
+
+ /* The FIB index for src/dst addresses */
+ u32 encap_fib_index;
+
+ /* vnet intfc index */
+ u32 sw_if_index;
+ u32 hw_if_index;
+
+ /** Next node after VxLAN-GBP encap */
+ uword encap_next_node;
+
+ /**
+ * Linkage into the FIB object graph
+ */
+ fib_node_t node;
+
+ /*
+ * The FIB entry for (depending on VXLAN-GBP tunnel is unicast or mcast)
+ * sending unicast VXLAN-GBP encap packets or receiving mcast VXLAN-GBP packets
+ */
+ fib_node_index_t fib_entry_index;
+ adj_index_t mcast_adj_index;
+
+ /**
+ * The tunnel is a child of the FIB entry for its destintion. This is
+ * so it receives updates when the forwarding information for that entry
+ * changes.
+ * The tunnels sibling index on the FIB entry's dependency list.
+ */
+ u32 sibling_index;
+
+ u32 dev_instance; /* Real device instance in tunnel vector */
+ u32 user_instance; /* Instance name being shown to user */
+
+ vnet_declare_rewrite (VLIB_BUFFER_PRE_DATA_SIZE);
+} vxlan_gbp_tunnel_t;
+
+#define foreach_vxlan_gbp_input_next \
+_(DROP, "error-drop") \
+_(L2_INPUT, "l2-input")
+
+typedef enum
+{
+#define _(s,n) VXLAN_GBP_INPUT_NEXT_##s,
+ foreach_vxlan_gbp_input_next
+#undef _
+ VXLAN_GBP_INPUT_N_NEXT,
+} vxlan_gbp_input_next_t;
+
+typedef enum
+{
+#define vxlan_gbp_error(n,s) VXLAN_GBP_ERROR_##n,
+#include <vnet/vxlan-gbp/vxlan_gbp_error.def>
+#undef vxlan_gbp_error
+ VXLAN_GBP_N_ERROR,
+} vxlan_gbp_input_error_t;
+
+typedef struct
+{
+ /* vector of encap tunnel instances */
+ vxlan_gbp_tunnel_t *tunnels;
+
+ /* lookup tunnel by key */
+ clib_bihash_16_8_t vxlan4_gbp_tunnel_by_key; /* keyed on ipv4.dst + fib + vni */
+ clib_bihash_24_8_t vxlan6_gbp_tunnel_by_key; /* keyed on ipv6.dst + fib + vni */
+
+ /* local VTEP IPs ref count used by vxlan-bypass node to check if
+ received VXLAN packet DIP matches any local VTEP address */
+ uword *vtep4; /* local ip4 VTEPs keyed on their ip4 addr */
+ uword *vtep6; /* local ip6 VTEPs keyed on their ip6 addr */
+
+ /* mcast shared info */
+ uword *mcast_shared; /* keyed on mcast ip46 addr */
+
+ /* Mapping from sw_if_index to tunnel index */
+ u32 *tunnel_index_by_sw_if_index;
+
+ /* convenience */
+ vlib_main_t *vlib_main;
+ vnet_main_t *vnet_main;
+
+ /* Record used instances */
+ uword *instance_used;
+} vxlan_gbp_main_t;
+
+extern vxlan_gbp_main_t vxlan_gbp_main;
+
+extern vlib_node_registration_t vxlan4_gbp_input_node;
+extern vlib_node_registration_t vxlan6_gbp_input_node;
+extern vlib_node_registration_t vxlan4_gbp_encap_node;
+extern vlib_node_registration_t vxlan6_gbp_encap_node;
+
+u8 *format_vxlan_gbp_encap_trace (u8 * s, va_list * args);
+
+typedef struct
+{
+ u8 is_add;
+ u8 is_ip6;
+ u32 instance;
+ ip46_address_t src, dst;
+ u16 sclass;
+ u32 mcast_sw_if_index;
+ u32 encap_fib_index;
+ u32 decap_next_index;
+ u32 vni;
+} vnet_vxlan_gbp_add_del_tunnel_args_t;
+
+int vnet_vxlan_gbp_add_del_tunnel
+ (vnet_vxlan_gbp_add_del_tunnel_args_t * a, u32 * sw_if_indexp);
+
+void vnet_int_vxlan_gbp_bypass_mode (u32 sw_if_index, u8 is_ip6,
+ u8 is_enable);
+
+u32 vnet_vxlan_gbp_get_tunnel_index (u32 sw_if_index);
+#endif /* included_vnet_vxlan_gbp_h */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
--- /dev/null
+/*
+ *------------------------------------------------------------------
+ * vxlan_gbp_api.c - vxlan gbp api
+ *
+ * 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.
+ *------------------------------------------------------------------
+ */
+
+#include <vnet/vnet.h>
+#include <vlibmemory/api.h>
+
+#include <vnet/interface.h>
+#include <vnet/api_errno.h>
+#include <vnet/feature/feature.h>
+#include <vnet/vxlan-gbp/vxlan_gbp.h>
+#include <vnet/fib/fib_table.h>
+
+#include <vnet/vnet_msg_enum.h>
+
+#define vl_typedefs /* define message structures */
+#include <vnet/vnet_all_api_h.h>
+#undef vl_typedefs
+
+#define vl_endianfun /* define message structures */
+#include <vnet/vnet_all_api_h.h>
+#undef vl_endianfun
+
+/* instantiate all the print functions we know about */
+#define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__)
+#define vl_printfun
+#include <vnet/vnet_all_api_h.h>
+#undef vl_printfun
+
+#include <vlibapi/api_helper_macros.h>
+
+#define foreach_vpe_api_msg \
+_(SW_INTERFACE_SET_VXLAN_GBP_BYPASS, sw_interface_set_vxlan_gbp_bypass) \
+_(VXLAN_GBP_ADD_DEL_TUNNEL, vxlan_gbp_add_del_tunnel) \
+_(VXLAN_GBP_TUNNEL_DUMP, vxlan_gbp_tunnel_dump)
+
+static void
+ vl_api_sw_interface_set_vxlan_gbp_bypass_t_handler
+ (vl_api_sw_interface_set_vxlan_gbp_bypass_t * mp)
+{
+ vl_api_sw_interface_set_vxlan_gbp_bypass_reply_t *rmp;
+ int rv = 0;
+ u32 sw_if_index = ntohl (mp->sw_if_index);
+
+ VALIDATE_SW_IF_INDEX (mp);
+
+ vnet_int_vxlan_gbp_bypass_mode (sw_if_index, mp->is_ipv6, mp->enable);
+ BAD_SW_IF_INDEX_LABEL;
+
+ REPLY_MACRO (VL_API_SW_INTERFACE_SET_VXLAN_GBP_BYPASS_REPLY);
+}
+
+static void vl_api_vxlan_gbp_add_del_tunnel_t_handler
+ (vl_api_vxlan_gbp_add_del_tunnel_t * mp)
+{
+ vl_api_vxlan_gbp_add_del_tunnel_reply_t *rmp;
+ int rv = 0;
+ u32 fib_index;
+
+ fib_index = fib_table_find (fib_ip_proto (mp->is_ipv6),
+ ntohl (mp->encap_vrf_id));
+ if (fib_index == ~0)
+ {
+ rv = VNET_API_ERROR_NO_SUCH_FIB;
+ goto out;
+ }
+
+ vnet_vxlan_gbp_add_del_tunnel_args_t a = {
+ .is_add = mp->is_add,
+ .is_ip6 = mp->is_ipv6,
+ .instance = ntohl (mp->instance),
+ .mcast_sw_if_index = ntohl (mp->mcast_sw_if_index),
+ .encap_fib_index = fib_index,
+ .decap_next_index = ntohl (mp->decap_next_index),
+ .vni = ntohl (mp->vni),
+ .sclass = ntohs (mp->sclass),
+ .dst = to_ip46 (mp->is_ipv6, mp->dst_address),
+ .src = to_ip46 (mp->is_ipv6, mp->src_address),
+ };
+
+ /* Check src & dst are different */
+ if (ip46_address_cmp (&a.dst, &a.src) == 0)
+ {
+ rv = VNET_API_ERROR_SAME_SRC_DST;
+ goto out;
+ }
+ if (ip46_address_is_multicast (&a.dst) &&
+ !vnet_sw_if_index_is_api_valid (a.mcast_sw_if_index))
+ {
+ rv = VNET_API_ERROR_INVALID_SW_IF_INDEX;
+ goto out;
+ }
+
+ u32 sw_if_index = ~0;
+ rv = vnet_vxlan_gbp_add_del_tunnel (&a, &sw_if_index);
+
+out:
+ /* *INDENT-OFF* */
+ REPLY_MACRO2(VL_API_VXLAN_GBP_ADD_DEL_TUNNEL_REPLY,
+ ({
+ rmp->sw_if_index = ntohl (sw_if_index);
+ }));
+ /* *INDENT-ON* */
+}
+
+static void send_vxlan_gbp_tunnel_details
+ (vxlan_gbp_tunnel_t * t, vl_api_registration_t * reg, u32 context)
+{
+ vl_api_vxlan_gbp_tunnel_details_t *rmp;
+ ip4_main_t *im4 = &ip4_main;
+ ip6_main_t *im6 = &ip6_main;
+ u8 is_ipv6 = !ip46_address_is_ip4 (&t->dst);
+
+ rmp = vl_msg_api_alloc (sizeof (*rmp));
+ memset (rmp, 0, sizeof (*rmp));
+ rmp->_vl_msg_id = ntohs (VL_API_VXLAN_GBP_TUNNEL_DETAILS);
+ if (is_ipv6)
+ {
+ memcpy (rmp->src_address, t->src.ip6.as_u8, 16);
+ memcpy (rmp->dst_address, t->dst.ip6.as_u8, 16);
+ rmp->encap_vrf_id = htonl (im6->fibs[t->encap_fib_index].ft_table_id);
+ }
+ else
+ {
+ memcpy (rmp->src_address, t->src.ip4.as_u8, 4);
+ memcpy (rmp->dst_address, t->dst.ip4.as_u8, 4);
+ rmp->encap_vrf_id = htonl (im4->fibs[t->encap_fib_index].ft_table_id);
+ }
+
+ rmp->instance = htonl (t->user_instance);
+ rmp->mcast_sw_if_index = htonl (t->mcast_sw_if_index);
+ rmp->vni = htonl (t->vni);
+ rmp->sclass = htons (t->sclass);
+ rmp->decap_next_index = htonl (t->decap_next_index);
+ rmp->sw_if_index = htonl (t->sw_if_index);
+ rmp->is_ipv6 = is_ipv6;
+ rmp->context = context;
+
+ vl_api_send_msg (reg, (u8 *) rmp);
+}
+
+static void vl_api_vxlan_gbp_tunnel_dump_t_handler
+ (vl_api_vxlan_gbp_tunnel_dump_t * mp)
+{
+ vl_api_registration_t *reg;
+ vxlan_gbp_main_t *vxm = &vxlan_gbp_main;
+ vxlan_gbp_tunnel_t *t;
+ u32 sw_if_index;
+
+ reg = vl_api_client_index_to_registration (mp->client_index);
+ if (!reg)
+ return;
+
+ sw_if_index = ntohl (mp->sw_if_index);
+
+ if (~0 == sw_if_index)
+ {
+ /* *INDENT-OFF* */
+ pool_foreach (t, vxm->tunnels,
+ ({
+ send_vxlan_gbp_tunnel_details(t, reg, mp->context);
+ }));
+ /* *INDENT-ON* */
+ }
+ else
+ {
+ if ((sw_if_index >= vec_len (vxm->tunnel_index_by_sw_if_index)) ||
+ (~0 == vxm->tunnel_index_by_sw_if_index[sw_if_index]))
+ {
+ return;
+ }
+ t = &vxm->tunnels[vxm->tunnel_index_by_sw_if_index[sw_if_index]];
+ send_vxlan_gbp_tunnel_details (t, reg, mp->context);
+ }
+}
+
+/*
+ * vpe_api_hookup
+ * Add vpe's API message handlers to the table.
+ * vlib has alread mapped shared memory and
+ * added the client registration handlers.
+ * See .../vlib-api/vlibmemory/memclnt_vlib.c:memclnt_process()
+ */
+#define vl_msg_name_crc_list
+#include <vnet/vnet_all_api_h.h>
+#undef vl_msg_name_crc_list
+
+static void
+setup_message_id_table (api_main_t * am)
+{
+#define _(id,n,crc) vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id);
+ foreach_vl_msg_name_crc_vxlan_gbp;
+#undef _
+}
+
+static clib_error_t *
+vxlan_gbp_api_hookup (vlib_main_t * vm)
+{
+ api_main_t *am = &api_main;
+
+#define _(N,n) \
+ vl_msg_api_set_handlers(VL_API_##N, #n, \
+ vl_api_##n##_t_handler, \
+ vl_noop_handler, \
+ vl_api_##n##_t_endian, \
+ vl_api_##n##_t_print, \
+ sizeof(vl_api_##n##_t), 1);
+ foreach_vpe_api_msg;
+#undef _
+
+ /*
+ * Set up the (msg_name, crc, message-id) table
+ */
+ setup_message_id_table (am);
+
+ return 0;
+}
+
+VLIB_API_INIT_FUNCTION (vxlan_gbp_api_hookup);
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
--- /dev/null
+/*
+ * 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.
+ */
+vxlan_gbp_error (DECAPSULATED, "good packets decapsulated")
+vxlan_gbp_error (NO_SUCH_TUNNEL, "no such tunnel packets")
+vxlan_gbp_error (BAD_FLAGS, "packets with bad flags field in vxlan gbp header")
--- /dev/null
+/*
+ * 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 __included_vxlan_gbp_packet_h__
+#define __included_vxlan_gbp_packet_h__ 1
+
+/*
+ * From draft-smith-vxlan-group-policy-04.txt
+ *
+ * 0 1 2 3
+ * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * |G|R|R|R|I|R|R|R|R|D|E|S|A|R|R|R| Group Policy ID |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | VXLAN Network Identifier (VNI) | Reserved |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ *
+ * G bit: Bit 0 of the initial word is defined as the G (Group Based
+ * Policy Extension) bit.
+ *
+ * I bit: where the I flag MUST be set to 1 for a valid
+ * VXLAN Network ID (VNI).
+ *
+ * D bit: Bit 9 of the initial word is defined as the Don't Learn bit.
+ * When set, this bit indicates that the egress VTEP MUST NOT learn the
+ * source address of the encapsulated frame.
+ *
+ * E bit: Bit 10 of the initial word is defined as the bounce packet.
+ * When set, this bit indicates that packet is bounced and must be
+ * dropped.
+ *
+ * S bit: Bit 11 of the initial word is defined as the source policy
+ * applied bit.
+ *
+ * A bit: Bit 12 of the initial word is defined as the A (Policy
+ * Applied) bit. This bit is only defined as the A bit when the G bit
+ * is set to 1.
+ *
+ * A = 1 indicates that the group policy has already been applied to
+ * this packet. Policies MUST NOT be applied by devices when the A
+ * bit is set.
+ *
+ * A = 0 indicates that the group policy has not been applied to this
+ * packet. Group policies MUST be applied by devices when the A bit
+ * is set to 0 and the destination Group has been determined.
+ * Devices that apply the Group policy MUST set the A bit to 1 after
+ * the policy has been applied.
+ *
+ * Group Policy ID: 16 bit identifier that indicates the source TSI
+ * Group membership being encapsulated by VXLAN. Its value is source
+ * class id.
+ *
+ */
+
+typedef struct
+{
+ union
+ {
+ struct
+ {
+ union
+ {
+ struct
+ {
+ u8 flag_g_i;
+ u8 gpflags;
+ };
+ u16 flags;
+ };
+ u16 sclass;
+ };
+ u32 flags_sclass_as_u32;
+ };
+ u32 vni_reserved;
+} vxlan_gbp_header_t;
+
+#define VXLAN_GBP_FLAGS_G 0x80
+#define VXLAN_GBP_FLAGS_I 0x08
+
+#define foreach_vxlan_gbp_gpflags \
+_ (0x40, D) \
+_ (0x20, E) \
+_ (0x10, S) \
+_ (0x08, A)
+
+typedef enum
+{
+#define _(n,f) VXLAN_GBP_GPFLAGS_##f = n,
+ foreach_vxlan_gbp_gpflags
+#undef _
+} vxlan_gbp_gpflag_t;
+
+static inline u32
+vxlan_gbp_get_vni (vxlan_gbp_header_t * h)
+{
+ u32 vni_reserved_host_byte_order;
+
+ vni_reserved_host_byte_order = clib_net_to_host_u32 (h->vni_reserved);
+ return vni_reserved_host_byte_order >> 8;
+}
+
+static inline u16
+vxlan_gbp_get_sclass (vxlan_gbp_header_t * h)
+{
+ u16 sclass_host_byte_order;
+
+ sclass_host_byte_order = clib_net_to_host_u16 (h->sclass);
+ return sclass_host_byte_order;
+}
+
+static inline u8
+vxlan_gbp_get_gpflags (vxlan_gbp_header_t * h)
+{
+ return h->gpflags;
+}
+
+static inline u8
+vxlan_gbp_get_flags (vxlan_gbp_header_t * h)
+{
+ return h->flag_g_i;
+}
+
+static inline void
+vxlan_gbp_set_header (vxlan_gbp_header_t * h, u32 vni)
+{
+ h->vni_reserved = clib_host_to_net_u32 (vni << 8);
+ h->flags_sclass_as_u32 = 0;
+ h->flag_g_i = VXLAN_GBP_FLAGS_I | VXLAN_GBP_FLAGS_G;
+}
+
+#endif /* __included_vxlan_gbp_packet_h__ */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
+bind_layers(UDP, VXLAN, dport=4790) # RFC standard vxlan-gpe port
bind_layers(UDP, VXLAN, dport=6633) # New IANA assigned port for use with NSH
bind_layers(UDP, VXLAN, dport=8472) # Linux implementation port
++bind_layers(UDP, VXLAN, dport=48879) # RFC standard vxlan-gbp port
bind_layers(VXLAN, Ether, {'flags': 0x8})
--- /dev/null
+diff --git a/scapy/layers/vxlan.py b/scapy/layers/vxlan.py
+index 03c3a5a..ee30f28 100644
+--- a/scapy/layers/vxlan.py
++++ b/scapy/layers/vxlan.py
+@@ -69,6 +69,7 @@ bind_layers(UDP, VXLAN, dport=4789) # RFC standard vxlan port
+ bind_layers(UDP, VXLAN, dport=4790) # RFC standard vxlan-gpe port
+ bind_layers(UDP, VXLAN, dport=6633) # New IANA assigned port for use with NSH
+ bind_layers(UDP, VXLAN, dport=8472) # Linux implementation port
++bind_layers(UDP, VXLAN, dport=48879) # iVXLAN port
+ bind_layers(UDP, VXLAN, sport=4789)
+ bind_layers(UDP, VXLAN, sport=4790)
+ bind_layers(UDP, VXLAN, sport=6633)
self.address_n,
self.address_len,
sw_if_index=self.sw_if_index if self.sw_if_index else 0xffffffff,
- epg_id=self.epg if self.epg else 0xffffffff,
+ epg_id=self.epg if self.epg else 0xffff,
is_ip6=self.is_ip6)
self._test.registry.register(self, self._test.logger)
--- /dev/null
+#!/usr/bin/env python
+
+import socket
+from util import ip4n_range, ip4_range
+import unittest
+from framework import VppTestCase, VppTestRunner
+from template_bd import BridgeDomain
+
+from scapy.layers.l2 import Ether, Raw
+from scapy.layers.inet import IP, UDP
+from scapy.layers.vxlan import VXLAN
+from scapy.utils import atol
+
+import StringIO
+
+
+def reassemble(listoffragments):
+ buffer = StringIO.StringIO()
+ first = listoffragments[0]
+ buffer.seek(20)
+ for pkt in listoffragments:
+ buffer.seek(pkt[IP].frag*8)
+ buffer.write(pkt[IP].payload)
+ first.len = len(buffer.getvalue()) + 20
+ first.flags = 0
+ del(first.chksum)
+ header = str(first[Ether])[:34]
+ return first[Ether].__class__(header + buffer.getvalue())
+
+
+class TestVxlanGbp(VppTestCase):
+ """ VXLAN GBP Test Case """
+
+ @property
+ def frame_request(self):
+ """ Ethernet frame modeling a generic request """
+ return (Ether(src='00:00:00:00:00:01', dst='00:00:00:00:00:02') /
+ IP(src='1.2.3.4', dst='4.3.2.1') /
+ UDP(sport=10000, dport=20000) /
+ Raw('\xa5' * 100))
+
+ @property
+ def frame_reply(self):
+ """ Ethernet frame modeling a generic reply """
+ return (Ether(src='00:00:00:00:00:02', dst='00:00:00:00:00:01') /
+ IP(src='4.3.2.1', dst='1.2.3.4') /
+ UDP(sport=20000, dport=10000) /
+ Raw('\xa5' * 100))
+
+ def encapsulate(self, pkt, vni):
+ """
+ Encapsulate the original payload frame by adding VXLAN GBP header with
+ its UDP, IP and Ethernet fields
+ """
+ return (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+ IP(src=self.pg0.remote_ip4, dst=self.pg0.local_ip4) /
+ UDP(sport=self.dport, dport=self.dport, chksum=0) /
+ VXLAN(vni=vni, flags=self.flags, gpflags=self.gpflags,
+ gpid=self.sclass) / pkt)
+
+ def ip_range(self, start, end):
+ """ range of remote ip's """
+ return ip4_range(self.pg0.remote_ip4, start, end)
+
+ def decapsulate(self, pkt):
+ """
+ Decapsulate the original payload frame by removing VXLAN header
+ """
+ # check if is set G and I flag
+ self.assertEqual(pkt[VXLAN].flags, int('0x88', 16))
+ return pkt[VXLAN].payload
+
+ # Method for checking VXLAN GBP encapsulation.
+ #
+ def check_encapsulation(self, pkt, vni, local_only=False, mcast_pkt=False):
+ # TODO: add error messages
+ # Verify source MAC is VPP_MAC and destination MAC is MY_MAC resolved
+ # by VPP using ARP.
+ self.assertEqual(pkt[Ether].src, self.pg0.local_mac)
+ if not local_only:
+ if not mcast_pkt:
+ self.assertEqual(pkt[Ether].dst, self.pg0.remote_mac)
+ else:
+ self.assertEqual(pkt[Ether].dst, type(self).mcast_mac)
+ # Verify VXLAN GBP tunnel source IP is VPP_IP and destination IP is
+ # MY_IP.
+ self.assertEqual(pkt[IP].src, self.pg0.local_ip4)
+ if not local_only:
+ if not mcast_pkt:
+ self.assertEqual(pkt[IP].dst, self.pg0.remote_ip4)
+ else:
+ self.assertEqual(pkt[IP].dst, type(self).mcast_ip4)
+ # Verify UDP destination port is VXLAN GBP 48879, source UDP port could
+ # be arbitrary.
+ self.assertEqual(pkt[UDP].dport, type(self).dport)
+ # TODO: checksum check
+ # Verify VNI
+ # pkt.show()
+ self.assertEqual(pkt[VXLAN].vni, vni)
+ # Verify Source Class
+ self.assertEqual(pkt[VXLAN].gpid, 0)
+
+ @classmethod
+ def create_vxlan_gbp_flood_test_bd(cls, vni, n_ucast_tunnels):
+ # Create 2 ucast vxlan tunnels under bd
+ ip_range_start = 10
+ ip_range_end = ip_range_start + n_ucast_tunnels
+ next_hop_address = cls.pg0.remote_ip4n
+ for dest_ip4n in ip4n_range(next_hop_address, ip_range_start,
+ ip_range_end):
+ # add host route so dest_ip4n will not be resolved
+ cls.vapi.ip_add_del_route(dest_ip4n, 32, next_hop_address)
+ r = cls.vapi.vxlan_gbp_add_del_tunnel(
+ src_addr=cls.pg0.local_ip4n,
+ dst_addr=dest_ip4n,
+ vni=vni)
+ cls.vapi.sw_interface_set_l2_bridge(r.sw_if_index, bd_id=vni)
+
+ # Class method to start the VXLAN GBP test case.
+ # Overrides setUpClass method in VppTestCase class.
+ # Python try..except statement is used to ensure that the tear down of
+ # the class will be executed even if exception is raised.
+ # @param cls The class pointer.
+ @classmethod
+ def setUpClass(cls):
+ super(TestVxlanGbp, cls).setUpClass()
+
+ try:
+ cls.dport = 48879
+ cls.flags = 0x88
+ cls.gpflags = 0x0
+ cls.sclass = 0
+
+ # Create 2 pg interfaces.
+ cls.create_pg_interfaces(range(4))
+ for pg in cls.pg_interfaces:
+ pg.admin_up()
+
+ # Configure IPv4 addresses on VPP pg0.
+ cls.pg0.config_ip4()
+
+ # Resolve MAC address for VPP's IP address on pg0.
+ cls.pg0.resolve_arp()
+
+ # Create VXLAN GBP VTEP on VPP pg0, and put vxlan_gbp_tunnel0 and
+ # pg1 into BD.
+ cls.single_tunnel_bd = 1
+ r = cls.vapi.vxlan_gbp_add_del_tunnel(
+ src_addr=cls.pg0.local_ip4n,
+ dst_addr=cls.pg0.remote_ip4n,
+ vni=cls.single_tunnel_bd)
+ cls.vapi.sw_interface_set_l2_bridge(r.sw_if_index,
+ bd_id=cls.single_tunnel_bd)
+ cls.vapi.sw_interface_set_l2_bridge(cls.pg1.sw_if_index,
+ bd_id=cls.single_tunnel_bd)
+
+ # Setup vni 2 to test multicast flooding
+ cls.n_ucast_tunnels = 2
+ # Setup vni 3 to test unicast flooding
+ cls.ucast_flood_bd = 3
+ cls.create_vxlan_gbp_flood_test_bd(cls.ucast_flood_bd,
+ cls.n_ucast_tunnels)
+ cls.vapi.sw_interface_set_l2_bridge(cls.pg3.sw_if_index,
+ bd_id=cls.ucast_flood_bd)
+ except Exception:
+ super(TestVxlanGbp, cls).tearDownClass()
+ raise
+
+ def assert_eq_pkts(self, pkt1, pkt2):
+ """ Verify the Ether, IP, UDP, payload are equal in both
+ packets
+ """
+ self.assertEqual(pkt1[Ether].src, pkt2[Ether].src)
+ self.assertEqual(pkt1[Ether].dst, pkt2[Ether].dst)
+ self.assertEqual(pkt1[IP].src, pkt2[IP].src)
+ self.assertEqual(pkt1[IP].dst, pkt2[IP].dst)
+ self.assertEqual(pkt1[UDP].sport, pkt2[UDP].sport)
+ self.assertEqual(pkt1[UDP].dport, pkt2[UDP].dport)
+ self.assertEqual(pkt1[Raw], pkt2[Raw])
+
+ def test_decap(self):
+ """ Decapsulation test
+ Send encapsulated frames from pg0
+ Verify receipt of decapsulated frames on pg1
+ """
+ encapsulated_pkt = self.encapsulate(self.frame_request,
+ self.single_tunnel_bd)
+
+ self.pg0.add_stream([encapsulated_pkt, ])
+
+ self.pg1.enable_capture()
+
+ self.pg_start()
+
+ # Pick first received frame and check if it's the non-encapsulated
+ # frame
+ out = self.pg1.get_capture(1)
+ pkt = out[0]
+ self.assert_eq_pkts(pkt, self.frame_request)
+
+ def test_encap(self):
+ """ Encapsulation test
+ Send frames from pg1
+ Verify receipt of encapsulated frames on pg0
+ """
+ self.pg1.add_stream([self.frame_reply])
+
+ self.pg0.enable_capture()
+
+ self.pg_start()
+
+ # Pick first received frame and check if it's corectly encapsulated.
+ out = self.pg0.get_capture(1)
+ pkt = out[0]
+ self.check_encapsulation(pkt, self.single_tunnel_bd)
+
+ payload = self.decapsulate(pkt)
+ self.assert_eq_pkts(payload, self.frame_reply)
+
+ def test_ucast_flood(self):
+ """ Unicast flood test
+ Send frames from pg3
+ Verify receipt of encapsulated frames on pg0
+ """
+ self.pg3.add_stream([self.frame_reply])
+
+ self.pg0.enable_capture()
+
+ self.pg_start()
+
+ # Get packet from each tunnel and assert it's corectly encapsulated.
+ out = self.pg0.get_capture(self.n_ucast_tunnels)
+ for pkt in out:
+ self.check_encapsulation(pkt, self.ucast_flood_bd, True)
+ payload = self.decapsulate(pkt)
+ self.assert_eq_pkts(payload, self.frame_reply)
+
+ def test_encap_big_packet(self):
+ """ Encapsulation test send big frame from pg1
+ Verify receipt of encapsulated frames on pg0
+ """
+
+ self.vapi.sw_interface_set_mtu(self.pg0.sw_if_index, [1500, 0, 0, 0])
+
+ frame = (Ether(src='00:00:00:00:00:02', dst='00:00:00:00:00:01') /
+ IP(src='4.3.2.1', dst='1.2.3.4') /
+ UDP(sport=20000, dport=10000) /
+ Raw('\xa5' * 1450))
+
+ self.pg1.add_stream([frame])
+
+ self.pg0.enable_capture()
+
+ self.pg_start()
+
+ # Pick first received frame and check if it's correctly encapsulated.
+ out = self.pg0.get_capture(2)
+ pkt = reassemble(out)
+ self.check_encapsulation(pkt, self.single_tunnel_bd)
+
+ payload = self.decapsulate(pkt)
+ self.assert_eq_pkts(payload, frame)
+
+# Method to define VPP actions before tear down of the test case.
+# Overrides tearDown method in VppTestCase class.
+# @param self The object pointer.
+ def tearDown(self):
+ super(TestVxlanGbp, self).tearDown()
+ if not self.vpp_dead:
+ self.logger.info(self.vapi.cli("show bridge-domain 1 detail"))
+ self.logger.info(self.vapi.cli("show bridge-domain 3 detail"))
+ self.logger.info(self.vapi.cli("show vxlan-gbp tunnel"))
+ self.logger.info(self.vapi.cli("show error"))
+
+
+if __name__ == '__main__':
+ unittest.main(testRunner=VppTestRunner)
'protocol': protocol,
'vni': vni})
+ def vxlan_gbp_add_del_tunnel(
+ self,
+ src_addr,
+ dst_addr,
+ mcast_sw_if_index=0xFFFFFFFF,
+ is_add=1,
+ is_ipv6=0,
+ encap_vrf_id=0,
+ decap_next_index=0xFFFFFFFF,
+ vni=0,
+ instance=0xFFFFFFFF):
+ """
+
+ :param dst_addr:
+ :param src_addr:
+ :param is_add: (Default value = 1)
+ :param is_ipv6: (Default value = 0)
+ :param encap_vrf_id: (Default value = 0)
+ :param decap_next_index: (Default value = 0xFFFFFFFF)
+ :param mcast_sw_if_index: (Default value = 0xFFFFFFFF)
+ :param vni: (Default value = 0)
+ :param instance: (Default value = 0xFFFFFFFF)
+
+ """
+ return self.api(self.papi.vxlan_gbp_add_del_tunnel,
+ {'is_add': is_add,
+ 'is_ipv6': is_ipv6,
+ 'src_address': src_addr,
+ 'dst_address': dst_addr,
+ 'mcast_sw_if_index': mcast_sw_if_index,
+ 'encap_vrf_id': encap_vrf_id,
+ 'decap_next_index': decap_next_index,
+ 'vni': vni,
+ 'instance': instance})
+
def pppoe_add_del_session(
self,
client_ip,
is_internal,
addr, addr_len,
sw_if_index=0xffffffff,
- epg_id=0xffffffff,
+ epg_id=0xffff,
is_ip6=False):
""" GBP Subnet Add/Del """
return self.api(self.papi.gbp_subnet_add_del,
Code Review / vpp.git / commitdiff