blob: 4f966fc323bdf7782951e234d92d667d185bc965 [file] [log] [blame]
Ed Warnickecb9cada2015-12-08 15:45:58 -07001/*
2 * Copyright (c) 2015 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15#include <vnet/vxlan/vxlan.h>
Chris Luke99cb3352016-04-26 10:49:53 -040016#include <vnet/ip/format.h>
John Loc42912d2016-11-07 18:30:47 -050017#include <vnet/fib/fib_entry.h>
18#include <vnet/fib/fib_table.h>
Neale Ranns32e1c012016-11-22 17:07:28 +000019#include <vnet/mfib/mfib_table.h>
20#include <vnet/adj/adj_mcast.h>
eyal bari82e21d72018-04-26 13:14:55 +030021#include <vnet/adj/rewrite.h>
Eyal Bari3212c572017-03-06 11:47:50 +020022#include <vnet/interface.h>
Hongjun Nibeb4bf72016-11-25 00:03:46 +080023#include <vlib/vlib.h>
Ed Warnickecb9cada2015-12-08 15:45:58 -070024
Billy McFallc5d9cda2016-09-14 10:39:58 -040025/**
26 * @file
27 * @brief VXLAN.
28 *
29 * VXLAN provides the features needed to allow L2 bridge domains (BDs)
30 * to span multiple servers. This is done by building an L2 overlay on
31 * top of an L3 network underlay using VXLAN tunnels.
32 *
33 * This makes it possible for servers to be co-located in the same data
34 * center or be separated geographically as long as they are reachable
35 * through the underlay L3 network.
36 *
37 * You can refer to this kind of L2 overlay bridge domain as a VXLAN
38 * (Virtual eXtensible VLAN) segment.
39 */
40
41
Ed Warnickecb9cada2015-12-08 15:45:58 -070042vxlan_main_t vxlan_main;
43
Eyal Bari8f576482018-05-07 10:13:44 +030044static u8 *
45format_decap_next (u8 * s, va_list * args)
Hongjun Nibeb4bf72016-11-25 00:03:46 +080046{
47 u32 next_index = va_arg (*args, u32);
48
John Lo4478d8e2018-01-12 17:15:25 -050049 if (next_index == VXLAN_INPUT_NEXT_DROP)
50 return format (s, "drop");
51 else
52 return format (s, "index %d", next_index);
Hongjun Nibeb4bf72016-11-25 00:03:46 +080053 return s;
54}
55
Eyal Bari8f576482018-05-07 10:13:44 +030056u8 *
57format_vxlan_tunnel (u8 * s, va_list * args)
Ed Warnickecb9cada2015-12-08 15:45:58 -070058{
Eyal Bari8f576482018-05-07 10:13:44 +030059 vxlan_tunnel_t *t = va_arg (*args, vxlan_tunnel_t *);
Jon Loeliger3d460bd2018-02-01 16:36:12 -060060
61 s = format (s,
62 "[%d] instance %d src %U dst %U vni %d fib-idx %d sw-if-idx %d ",
John Lo25d417f2018-02-15 15:47:53 -050063 t->dev_instance, t->user_instance,
Eyal Bari8f576482018-05-07 10:13:44 +030064 format_ip46_address, &t->src, IP46_TYPE_ANY,
65 format_ip46_address, &t->dst, IP46_TYPE_ANY,
66 t->vni, t->encap_fib_index, t->sw_if_index);
John Lo56912c82016-12-08 16:10:02 -050067
John Lo4478d8e2018-01-12 17:15:25 -050068 s = format (s, "encap-dpo-idx %d ", t->next_dpo.dpoi_index);
John Lo56912c82016-12-08 16:10:02 -050069
John Lo4478d8e2018-01-12 17:15:25 -050070 if (PREDICT_FALSE (t->decap_next_index != VXLAN_INPUT_NEXT_L2_INPUT))
71 s = format (s, "decap-next-%U ", format_decap_next, t->decap_next_index);
72
73 if (PREDICT_FALSE (ip46_address_is_multicast (&t->dst)))
74 s = format (s, "mcast-sw-if-idx %d ", t->mcast_sw_if_index);
75
Ed Warnickecb9cada2015-12-08 15:45:58 -070076 return s;
77}
78
Eyal Bari8f576482018-05-07 10:13:44 +030079static u8 *
80format_vxlan_name (u8 * s, va_list * args)
Ed Warnickecb9cada2015-12-08 15:45:58 -070081{
82 u32 dev_instance = va_arg (*args, u32);
Eyal Bari8f576482018-05-07 10:13:44 +030083 vxlan_main_t *vxm = &vxlan_main;
Jon Loeliger3d460bd2018-02-01 16:36:12 -060084 vxlan_tunnel_t *t;
85
86 if (dev_instance == ~0)
Eyal Bari8f576482018-05-07 10:13:44 +030087 return format (s, "<cached-unused>");
Jon Loeliger3d460bd2018-02-01 16:36:12 -060088
Eyal Bari8f576482018-05-07 10:13:44 +030089 if (dev_instance >= vec_len (vxm->tunnels))
90 return format (s, "<improperly-referenced>");
Jon Loeliger3d460bd2018-02-01 16:36:12 -060091
Eyal Bari8f576482018-05-07 10:13:44 +030092 t = pool_elt_at_index (vxm->tunnels, dev_instance);
Jon Loeliger3d460bd2018-02-01 16:36:12 -060093
94 return format (s, "vxlan_tunnel%d", t->user_instance);
Ed Warnickecb9cada2015-12-08 15:45:58 -070095}
96
Pavel Kotucek988a7c42016-02-29 15:03:08 +010097static clib_error_t *
98vxlan_interface_admin_up_down (vnet_main_t * vnm, u32 hw_if_index, u32 flags)
99{
Eyal Baria93ea422017-02-01 13:36:15 +0200100 u32 hw_flags = (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) ?
101 VNET_HW_INTERFACE_FLAG_LINK_UP : 0;
102 vnet_hw_interface_set_flags (vnm, hw_if_index, hw_flags);
Pavel Kotucek988a7c42016-02-29 15:03:08 +0100103
104 return /* no error */ 0;
105}
106
Eyal Bari8f576482018-05-07 10:13:44 +0300107/* *INDENT-OFF* */
108VNET_DEVICE_CLASS (vxlan_device_class, static) = {
Ed Warnickecb9cada2015-12-08 15:45:58 -0700109 .name = "VXLAN",
110 .format_device_name = format_vxlan_name,
111 .format_tx_trace = format_vxlan_encap_trace,
Pavel Kotucek988a7c42016-02-29 15:03:08 +0100112 .admin_up_down_function = vxlan_interface_admin_up_down,
Ed Warnickecb9cada2015-12-08 15:45:58 -0700113};
Eyal Bari8f576482018-05-07 10:13:44 +0300114/* *INDENT-ON* */
Ed Warnickecb9cada2015-12-08 15:45:58 -0700115
Eyal Bari8f576482018-05-07 10:13:44 +0300116static u8 *
117format_vxlan_header_with_length (u8 * s, va_list * args)
Ed Warnickecb9cada2015-12-08 15:45:58 -0700118{
119 u32 dev_instance = va_arg (*args, u32);
120 s = format (s, "unimplemented dev %u", dev_instance);
121 return s;
122}
123
Eyal Bari8f576482018-05-07 10:13:44 +0300124/* *INDENT-OFF* */
Ed Warnickecb9cada2015-12-08 15:45:58 -0700125VNET_HW_INTERFACE_CLASS (vxlan_hw_class) = {
126 .name = "VXLAN",
127 .format_header = format_vxlan_header_with_length,
Neale Rannsb80c5362016-10-08 13:03:40 +0100128 .build_rewrite = default_build_rewrite,
Ed Warnickecb9cada2015-12-08 15:45:58 -0700129};
Eyal Bari8f576482018-05-07 10:13:44 +0300130/* *INDENT-ON* */
Ed Warnickecb9cada2015-12-08 15:45:58 -0700131
Eyal Baric5b13602016-11-24 19:42:43 +0200132static void
Eyal Bari8f576482018-05-07 10:13:44 +0300133vxlan_tunnel_restack_dpo (vxlan_tunnel_t * t)
Eyal Baric5b13602016-11-24 19:42:43 +0200134{
Eyal Bari8f576482018-05-07 10:13:44 +0300135 u8 is_ip4 = ip46_address_is_ip4 (&t->dst);
Eyal Bari99ed4862018-04-25 13:50:57 +0300136 dpo_id_t dpo = DPO_INVALID;
137 fib_forward_chain_type_t forw_type = is_ip4 ?
Eyal Bari8f576482018-05-07 10:13:44 +0300138 FIB_FORW_CHAIN_TYPE_UNICAST_IP4 : FIB_FORW_CHAIN_TYPE_UNICAST_IP6;
Eyal Baric5b13602016-11-24 19:42:43 +0200139
Eyal Bari99ed4862018-04-25 13:50:57 +0300140 fib_entry_contribute_forwarding (t->fib_entry_index, forw_type, &dpo);
141
142 /* vxlan uses the payload hash as the udp source port
143 * hence the packet's hash is unknown
144 * skip single bucket load balance dpo's */
145 while (DPO_LOAD_BALANCE == dpo.dpoi_type)
146 {
147 load_balance_t *lb = load_balance_get (dpo.dpoi_index);
148 if (lb->lb_n_buckets > 1)
Eyal Bari8f576482018-05-07 10:13:44 +0300149 break;
Eyal Bari99ed4862018-04-25 13:50:57 +0300150
151 dpo_copy (&dpo, load_balance_get_bucket_i (lb, 0));
152 }
153
154 u32 encap_index = is_ip4 ?
Eyal Bari8f576482018-05-07 10:13:44 +0300155 vxlan4_encap_node.index : vxlan6_encap_node.index;
Eyal Bari99ed4862018-04-25 13:50:57 +0300156 dpo_stack_from_node (encap_index, &t->next_dpo, &dpo);
Eyal Bari8f576482018-05-07 10:13:44 +0300157 dpo_reset (&dpo);
Eyal Baric5b13602016-11-24 19:42:43 +0200158}
John Loc42912d2016-11-07 18:30:47 -0500159
160static vxlan_tunnel_t *
Eyal Bari8f576482018-05-07 10:13:44 +0300161vxlan_tunnel_from_fib_node (fib_node_t * node)
John Loc42912d2016-11-07 18:30:47 -0500162{
Eyal Bari8f576482018-05-07 10:13:44 +0300163 ASSERT (FIB_NODE_TYPE_VXLAN_TUNNEL == node->fn_type);
164 return ((vxlan_tunnel_t *) (((char *) node) -
165 STRUCT_OFFSET_OF (vxlan_tunnel_t, node)));
John Loc42912d2016-11-07 18:30:47 -0500166}
167
168/**
169 * Function definition to backwalk a FIB node -
170 * Here we will restack the new dpo of VXLAN DIP to encap node.
171 */
172static fib_node_back_walk_rc_t
Eyal Bari8f576482018-05-07 10:13:44 +0300173vxlan_tunnel_back_walk (fib_node_t * node, fib_node_back_walk_ctx_t * ctx)
John Loc42912d2016-11-07 18:30:47 -0500174{
Eyal Bari8f576482018-05-07 10:13:44 +0300175 vxlan_tunnel_restack_dpo (vxlan_tunnel_from_fib_node (node));
176 return (FIB_NODE_BACK_WALK_CONTINUE);
John Loc42912d2016-11-07 18:30:47 -0500177}
178
179/**
180 * Function definition to get a FIB node from its index
181 */
Eyal Bari8f576482018-05-07 10:13:44 +0300182static fib_node_t *
John Loc42912d2016-11-07 18:30:47 -0500183vxlan_tunnel_fib_node_get (fib_node_index_t index)
184{
Eyal Bari8f576482018-05-07 10:13:44 +0300185 vxlan_tunnel_t *t;
186 vxlan_main_t *vxm = &vxlan_main;
John Loc42912d2016-11-07 18:30:47 -0500187
Eyal Bari8f576482018-05-07 10:13:44 +0300188 t = pool_elt_at_index (vxm->tunnels, index);
John Loc42912d2016-11-07 18:30:47 -0500189
Eyal Bari8f576482018-05-07 10:13:44 +0300190 return (&t->node);
John Loc42912d2016-11-07 18:30:47 -0500191}
192
193/**
194 * Function definition to inform the FIB node that its last lock has gone.
195 */
196static void
Eyal Bari8f576482018-05-07 10:13:44 +0300197vxlan_tunnel_last_lock_gone (fib_node_t * node)
John Loc42912d2016-11-07 18:30:47 -0500198{
Eyal Bari8f576482018-05-07 10:13:44 +0300199 /*
200 * The VXLAN tunnel is a root of the graph. As such
201 * it never has children and thus is never locked.
202 */
203 ASSERT (0);
John Loc42912d2016-11-07 18:30:47 -0500204}
205
206/*
207 * Virtual function table registered by VXLAN tunnels
208 * for participation in the FIB object graph.
209 */
210const static fib_node_vft_t vxlan_vft = {
Eyal Bari8f576482018-05-07 10:13:44 +0300211 .fnv_get = vxlan_tunnel_fib_node_get,
212 .fnv_last_lock = vxlan_tunnel_last_lock_gone,
213 .fnv_back_walk = vxlan_tunnel_back_walk,
John Loc42912d2016-11-07 18:30:47 -0500214};
215
216
Ed Warnickecb9cada2015-12-08 15:45:58 -0700217#define foreach_copy_field \
Ed Warnickecb9cada2015-12-08 15:45:58 -0700218_(vni) \
Eyal Baric5b13602016-11-24 19:42:43 +0200219_(mcast_sw_if_index) \
220_(encap_fib_index) \
Hongjun Nibeb4bf72016-11-25 00:03:46 +0800221_(decap_next_index) \
Eyal Baric5b13602016-11-24 19:42:43 +0200222_(src) \
223_(dst)
Chris Luke99cb3352016-04-26 10:49:53 -0400224
Eyal Bari554075a2018-02-13 15:17:17 +0200225static void
Eyal Baria93ea422017-02-01 13:36:15 +0200226vxlan_rewrite (vxlan_tunnel_t * t, bool is_ip6)
Ed Warnickecb9cada2015-12-08 15:45:58 -0700227{
Eyal Bari8f576482018-05-07 10:13:44 +0300228 union
229 {
eyal bari82e21d72018-04-26 13:14:55 +0300230 ip4_vxlan_header_t h4;
231 ip6_vxlan_header_t h6;
Matthew Smithec8aea12018-05-02 09:55:01 -0500232 } h;
eyal bari82e21d72018-04-26 13:14:55 +0300233 int len = is_ip6 ? sizeof h.h6 : sizeof h.h4;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700234
Eyal Bari8f576482018-05-07 10:13:44 +0300235 udp_header_t *udp;
236 vxlan_header_t *vxlan;
Eyal Baria93ea422017-02-01 13:36:15 +0200237 /* Fixed portion of the (outer) ip header */
Matthew Smithec8aea12018-05-02 09:55:01 -0500238
Eyal Bari8f576482018-05-07 10:13:44 +0300239 memset (&h, 0, sizeof (h));
240 if (!is_ip6)
Hongjun Nibeb4bf72016-11-25 00:03:46 +0800241 {
Eyal Bari8f576482018-05-07 10:13:44 +0300242 ip4_header_t *ip = &h.h4.ip4;
eyal bari82e21d72018-04-26 13:14:55 +0300243 udp = &h.h4.udp, vxlan = &h.h4.vxlan;
Eyal Baria93ea422017-02-01 13:36:15 +0200244 ip->ip_version_and_header_length = 0x45;
245 ip->ttl = 254;
246 ip->protocol = IP_PROTOCOL_UDP;
Eyal Bari8f576482018-05-07 10:13:44 +0300247
Eyal Baria93ea422017-02-01 13:36:15 +0200248 ip->src_address = t->src.ip4;
249 ip->dst_address = t->dst.ip4;
250
251 /* we fix up the ip4 header length and checksum after-the-fact */
252 ip->checksum = ip4_header_checksum (ip);
Hongjun Nibeb4bf72016-11-25 00:03:46 +0800253 }
254 else
255 {
Eyal Bari8f576482018-05-07 10:13:44 +0300256 ip6_header_t *ip = &h.h6.ip6;
eyal bari82e21d72018-04-26 13:14:55 +0300257 udp = &h.h6.udp, vxlan = &h.h6.vxlan;
Eyal Bari8f576482018-05-07 10:13:44 +0300258 ip->ip_version_traffic_class_and_flow_label =
259 clib_host_to_net_u32 (6 << 28);
Eyal Baria93ea422017-02-01 13:36:15 +0200260 ip->hop_limit = 255;
261 ip->protocol = IP_PROTOCOL_UDP;
Eyal Bari8f576482018-05-07 10:13:44 +0300262
Eyal Baria93ea422017-02-01 13:36:15 +0200263 ip->src_address = t->src.ip6;
264 ip->dst_address = t->dst.ip6;
Hongjun Nibeb4bf72016-11-25 00:03:46 +0800265 }
266
Eyal Baria93ea422017-02-01 13:36:15 +0200267 /* UDP header, randomize src port on something, maybe? */
268 udp->src_port = clib_host_to_net_u16 (4789);
269 udp->dst_port = clib_host_to_net_u16 (UDP_DST_PORT_vxlan);
270
271 /* VXLAN header */
Eyal Bari8f576482018-05-07 10:13:44 +0300272 vnet_set_vni_and_flags (vxlan, t->vni);
eyal bari82e21d72018-04-26 13:14:55 +0300273 vnet_rewrite_set_data (*t, &h, len);
Eyal Baria93ea422017-02-01 13:36:15 +0200274}
275
276static bool
Eyal Bari8f576482018-05-07 10:13:44 +0300277vxlan_decap_next_is_valid (vxlan_main_t * vxm, u32 is_ip6,
278 u32 decap_next_index)
Eyal Baria93ea422017-02-01 13:36:15 +0200279{
Eyal Bari8f576482018-05-07 10:13:44 +0300280 vlib_main_t *vm = vxm->vlib_main;
281 u32 input_idx = (!is_ip6) ?
282 vxlan4_input_node.index : vxlan6_input_node.index;
Eyal Baria93ea422017-02-01 13:36:15 +0200283 vlib_node_runtime_t *r = vlib_node_get_runtime (vm, input_idx);
284
285 return decap_next_index < r->n_next_nodes;
Hongjun Nibeb4bf72016-11-25 00:03:46 +0800286}
287
Eyal Barifff67c82016-12-21 12:45:47 +0200288static uword
Eyal Bari8f576482018-05-07 10:13:44 +0300289vtep_addr_ref (ip46_address_t * ip)
Eyal Barifff67c82016-12-21 12:45:47 +0200290{
Eyal Bari8f576482018-05-07 10:13:44 +0300291 uword *vtep = ip46_address_is_ip4 (ip) ?
292 hash_get (vxlan_main.vtep4, ip->ip4.as_u32) :
293 hash_get_mem (vxlan_main.vtep6, &ip->ip6);
294 if (vtep)
295 return ++(*vtep);
296 ip46_address_is_ip4 (ip) ?
297 hash_set (vxlan_main.vtep4, ip->ip4.as_u32, 1) :
298 hash_set_mem_alloc (&vxlan_main.vtep6, &ip->ip6, 1);
299 return 1;
Eyal Barifff67c82016-12-21 12:45:47 +0200300}
301
302static uword
Eyal Bari8f576482018-05-07 10:13:44 +0300303vtep_addr_unref (ip46_address_t * ip)
Eyal Barifff67c82016-12-21 12:45:47 +0200304{
Eyal Bari8f576482018-05-07 10:13:44 +0300305 uword *vtep = ip46_address_is_ip4 (ip) ?
306 hash_get (vxlan_main.vtep4, ip->ip4.as_u32) :
307 hash_get_mem (vxlan_main.vtep6, &ip->ip6);
308 ASSERT (vtep);
309 if (--(*vtep) != 0)
310 return *vtep;
311 ip46_address_is_ip4 (ip) ?
312 hash_unset (vxlan_main.vtep4, ip->ip4.as_u32) :
313 hash_unset_mem_free (&vxlan_main.vtep6, &ip->ip6);
314 return 0;
Eyal Barifff67c82016-12-21 12:45:47 +0200315}
316
Eyal Bari8f576482018-05-07 10:13:44 +0300317/* *INDENT-OFF* */
318typedef CLIB_PACKED(union
319{
320 struct
321 {
Neale Ranns32e1c012016-11-22 17:07:28 +0000322 fib_node_index_t mfib_entry_index;
Eyal Bari0ded8512017-01-19 17:01:09 +0200323 adj_index_t mcast_adj_index;
324 };
325 u64 as_u64;
326}) mcast_shared_t;
Eyal Bari8f576482018-05-07 10:13:44 +0300327/* *INDENT-ON* */
Eyal Bari0ded8512017-01-19 17:01:09 +0200328
329static inline mcast_shared_t
Eyal Bari8f576482018-05-07 10:13:44 +0300330mcast_shared_get (ip46_address_t * ip)
Eyal Barifff67c82016-12-21 12:45:47 +0200331{
Eyal Bari8f576482018-05-07 10:13:44 +0300332 ASSERT (ip46_address_is_multicast (ip));
333 uword *p = hash_get_mem (vxlan_main.mcast_shared, ip);
334 ASSERT (p);
335 mcast_shared_t ret = {.as_u64 = *p };
336 return ret;
Eyal Barifff67c82016-12-21 12:45:47 +0200337}
338
Eyal Bari0ded8512017-01-19 17:01:09 +0200339static inline void
Eyal Bari8f576482018-05-07 10:13:44 +0300340mcast_shared_add (ip46_address_t * dst, fib_node_index_t mfei, adj_index_t ai)
Neale Ranns32e1c012016-11-22 17:07:28 +0000341{
Eyal Bari8f576482018-05-07 10:13:44 +0300342 mcast_shared_t new_ep = {
343 .mcast_adj_index = ai,
344 .mfib_entry_index = mfei,
345 };
Neale Ranns32e1c012016-11-22 17:07:28 +0000346
Eyal Bari8f576482018-05-07 10:13:44 +0300347 hash_set_mem_alloc (&vxlan_main.mcast_shared, dst, new_ep.as_u64);
Neale Ranns32e1c012016-11-22 17:07:28 +0000348}
349
350static inline void
Eyal Bari8f576482018-05-07 10:13:44 +0300351mcast_shared_remove (ip46_address_t * dst)
Neale Ranns32e1c012016-11-22 17:07:28 +0000352{
Eyal Bari8f576482018-05-07 10:13:44 +0300353 mcast_shared_t ep = mcast_shared_get (dst);
Neale Ranns32e1c012016-11-22 17:07:28 +0000354
Eyal Bari8f576482018-05-07 10:13:44 +0300355 adj_unlock (ep.mcast_adj_index);
356 mfib_table_entry_delete_index (ep.mfib_entry_index, MFIB_SOURCE_VXLAN);
Neale Ranns32e1c012016-11-22 17:07:28 +0000357
Eyal Bari8f576482018-05-07 10:13:44 +0300358 hash_unset_mem_free (&vxlan_main.mcast_shared, dst);
Eyal Barifff67c82016-12-21 12:45:47 +0200359}
360
Eyal Bari8f576482018-05-07 10:13:44 +0300361int vnet_vxlan_add_del_tunnel
362 (vnet_vxlan_add_del_tunnel_args_t * a, u32 * sw_if_indexp)
Ed Warnickecb9cada2015-12-08 15:45:58 -0700363{
Eyal Bari8f576482018-05-07 10:13:44 +0300364 vxlan_main_t *vxm = &vxlan_main;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700365 vxlan_tunnel_t *t = 0;
Eyal Bari8f576482018-05-07 10:13:44 +0300366 vnet_main_t *vnm = vxm->vnet_main;
367 uword *p;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700368 u32 sw_if_index = ~0;
Chris Luke99cb3352016-04-26 10:49:53 -0400369 vxlan4_tunnel_key_t key4;
370 vxlan6_tunnel_key_t key6;
John Loc42912d2016-11-07 18:30:47 -0500371 u32 is_ip6 = a->is_ip6;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700372
John Lo56912c82016-12-08 16:10:02 -0500373 if (!is_ip6)
374 {
Eyal Bari8f576482018-05-07 10:13:44 +0300375 key4.src = a->dst.ip4.as_u32; /* decap src in key is encap dst in config */
John Lo56912c82016-12-08 16:10:02 -0500376 key4.vni = clib_host_to_net_u32 (a->vni << 8);
377 p = hash_get (vxm->vxlan4_tunnel_by_key, key4.as_u64);
Eyal Bari8f576482018-05-07 10:13:44 +0300378 }
379 else
John Lo56912c82016-12-08 16:10:02 -0500380 {
Eyal Bari0765c6e2017-01-29 12:40:50 +0200381 key6.src = a->dst.ip6;
John Lo56912c82016-12-08 16:10:02 -0500382 key6.vni = clib_host_to_net_u32 (a->vni << 8);
383 p = hash_get_mem (vxm->vxlan6_tunnel_by_key, &key6);
John Lo56912c82016-12-08 16:10:02 -0500384 }
Jon Loeliger3d460bd2018-02-01 16:36:12 -0600385
Ed Warnickecb9cada2015-12-08 15:45:58 -0700386 if (a->is_add)
387 {
Eyal Bari8f576482018-05-07 10:13:44 +0300388 l2input_main_t *l2im = &l2input_main;
Jon Loeliger3d460bd2018-02-01 16:36:12 -0600389 u32 dev_instance; /* real dev instance tunnel index */
390 u32 user_instance; /* request and actual instance number */
John Loc42912d2016-11-07 18:30:47 -0500391
Ed Warnickecb9cada2015-12-08 15:45:58 -0700392 /* adding a tunnel: tunnel must not already exist */
393 if (p)
Eyal Bari8f576482018-05-07 10:13:44 +0300394 return VNET_API_ERROR_TUNNEL_EXIST;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700395
Hongjun Nibeb4bf72016-11-25 00:03:46 +0800396 /*if not set explicitly, default to l2 */
Eyal Bari8f576482018-05-07 10:13:44 +0300397 if (a->decap_next_index == ~0)
Hongjun Nibeb4bf72016-11-25 00:03:46 +0800398 a->decap_next_index = VXLAN_INPUT_NEXT_L2_INPUT;
Eyal Bari8f576482018-05-07 10:13:44 +0300399 if (!vxlan_decap_next_is_valid (vxm, is_ip6, a->decap_next_index))
400 return VNET_API_ERROR_INVALID_DECAP_NEXT;
Hongjun Nibeb4bf72016-11-25 00:03:46 +0800401
Ed Warnickecb9cada2015-12-08 15:45:58 -0700402 pool_get_aligned (vxm->tunnels, t, CLIB_CACHE_LINE_BYTES);
Eyal Bari8f576482018-05-07 10:13:44 +0300403 memset (t, 0, sizeof (*t));
Jon Loeliger3d460bd2018-02-01 16:36:12 -0600404 dev_instance = t - vxm->tunnels;
405
Ed Warnickecb9cada2015-12-08 15:45:58 -0700406 /* copy from arg structure */
407#define _(x) t->x = a->x;
408 foreach_copy_field;
409#undef _
Chris Luke99cb3352016-04-26 10:49:53 -0400410
Eyal Bari554075a2018-02-13 15:17:17 +0200411 vxlan_rewrite (t, is_ip6);
Jon Loeliger3d460bd2018-02-01 16:36:12 -0600412 /*
413 * Reconcile the real dev_instance and a possible requested instance.
414 */
415 user_instance = a->instance;
Eyal Bari8f576482018-05-07 10:13:44 +0300416 if (user_instance == ~0)
Jon Loeliger3d460bd2018-02-01 16:36:12 -0600417 user_instance = dev_instance;
418 if (hash_get (vxm->instance_used, user_instance))
419 {
420 pool_put (vxm->tunnels, t);
421 return VNET_API_ERROR_INSTANCE_IN_USE;
422 }
423 hash_set (vxm->instance_used, user_instance, 1);
424
Eyal Bari8f576482018-05-07 10:13:44 +0300425 t->dev_instance = dev_instance; /* actual */
426 t->user_instance = user_instance; /* name */
Jon Loeliger3d460bd2018-02-01 16:36:12 -0600427
Eyal Bari5ac9bf52017-01-02 14:29:21 +0200428 /* copy the key */
429 if (is_ip6)
Eyal Bari8f576482018-05-07 10:13:44 +0300430 hash_set_mem_alloc (&vxm->vxlan6_tunnel_by_key, &key6, dev_instance);
Chris Luke99cb3352016-04-26 10:49:53 -0400431 else
Eyal Bari8f576482018-05-07 10:13:44 +0300432 hash_set (vxm->vxlan4_tunnel_by_key, key4.as_u64, dev_instance);
Eyal Barifff67c82016-12-21 12:45:47 +0200433
Eyal Bari554075a2018-02-13 15:17:17 +0200434 t->hw_if_index = vnet_register_interface
Eyal Bari8f576482018-05-07 10:13:44 +0300435 (vnm, vxlan_device_class.index, dev_instance,
436 vxlan_hw_class.index, dev_instance);
437 vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, t->hw_if_index);
John Loe5453d02018-01-23 19:21:34 -0500438
439 /* Set vxlan tunnel output node */
440 u32 encap_index = !is_ip6 ?
Eyal Bari8f576482018-05-07 10:13:44 +0300441 vxlan4_encap_node.index : vxlan6_encap_node.index;
Eyal Bari554075a2018-02-13 15:17:17 +0200442 vnet_set_interface_output_node (vnm, t->hw_if_index, encap_index);
John Loe5453d02018-01-23 19:21:34 -0500443
Ed Warnickecb9cada2015-12-08 15:45:58 -0700444 t->sw_if_index = sw_if_index = hi->sw_if_index;
John Loe5453d02018-01-23 19:21:34 -0500445
Eyal Bari8f576482018-05-07 10:13:44 +0300446 vec_validate_init_empty (vxm->tunnel_index_by_sw_if_index, sw_if_index,
447 ~0);
Jon Loeliger3d460bd2018-02-01 16:36:12 -0600448 vxm->tunnel_index_by_sw_if_index[sw_if_index] = dev_instance;
Dave Wallace60231f32015-12-17 21:04:30 -0500449
John Loc42912d2016-11-07 18:30:47 -0500450 /* setup l2 input config with l2 feature and bd 0 to drop packet */
451 vec_validate (l2im->configs, sw_if_index);
452 l2im->configs[sw_if_index].feature_bitmap = L2INPUT_FEAT_DROP;
453 l2im->configs[sw_if_index].bd_index = 0;
John Loe5453d02018-01-23 19:21:34 -0500454
Eyal Bari8f576482018-05-07 10:13:44 +0300455 vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, sw_if_index);
Eyal Bari3212c572017-03-06 11:47:50 +0200456 si->flags &= ~VNET_SW_INTERFACE_FLAG_HIDDEN;
John Loe5453d02018-01-23 19:21:34 -0500457 vnet_sw_interface_set_flags (vnm, sw_if_index,
Eyal Bari8f576482018-05-07 10:13:44 +0300458 VNET_SW_INTERFACE_FLAG_ADMIN_UP);
Eyal Bari3212c572017-03-06 11:47:50 +0200459
Eyal Bari8f576482018-05-07 10:13:44 +0300460 fib_node_init (&t->node, FIB_NODE_TYPE_VXLAN_TUNNEL);
Eyal Baric5b13602016-11-24 19:42:43 +0200461 fib_prefix_t tun_dst_pfx;
Eyal Baric5b13602016-11-24 19:42:43 +0200462 vnet_flood_class_t flood_class = VNET_FLOOD_CLASS_TUNNEL_NORMAL;
John Loc42912d2016-11-07 18:30:47 -0500463
Eyal Bari8f576482018-05-07 10:13:44 +0300464 fib_prefix_from_ip46_addr (&t->dst, &tun_dst_pfx);
465 if (!ip46_address_is_multicast (&t->dst))
466 {
467 /* Unicast tunnel -
468 * source the FIB entry for the tunnel's destination
469 * and become a child thereof. The tunnel will then get poked
470 * when the forwarding for the entry updates, and the tunnel can
471 * re-stack accordingly
472 */
473 vtep_addr_ref (&t->src);
474 t->fib_entry_index = fib_table_entry_special_add
475 (t->encap_fib_index, &tun_dst_pfx, FIB_SOURCE_RR,
Neale Rannsa0558302017-04-13 00:44:52 -0700476 FIB_ENTRY_FLAG_NONE);
Eyal Bari8f576482018-05-07 10:13:44 +0300477 t->sibling_index = fib_entry_child_add
478 (t->fib_entry_index, FIB_NODE_TYPE_VXLAN_TUNNEL, dev_instance);
479 vxlan_tunnel_restack_dpo (t);
480 }
Eyal Barifff67c82016-12-21 12:45:47 +0200481 else
Eyal Bari8f576482018-05-07 10:13:44 +0300482 {
483 /* Multicast tunnel -
John Lo56912c82016-12-08 16:10:02 -0500484 * as the same mcast group can be used for mutiple mcast tunnels
485 * with different VNIs, create the output fib adjecency only if
486 * it does not already exist
487 */
Eyal Bari8f576482018-05-07 10:13:44 +0300488 fib_protocol_t fp = fib_ip_proto (is_ip6);
Eyal Baric5b13602016-11-24 19:42:43 +0200489
Eyal Bari8f576482018-05-07 10:13:44 +0300490 if (vtep_addr_ref (&t->dst) == 1)
491 {
492 fib_node_index_t mfei;
493 adj_index_t ai;
494 fib_route_path_t path = {
495 .frp_proto = fib_proto_to_dpo (fp),
496 .frp_addr = zero_addr,
497 .frp_sw_if_index = 0xffffffff,
498 .frp_fib_index = ~0,
499 .frp_weight = 0,
500 .frp_flags = FIB_ROUTE_PATH_LOCAL,
501 };
502 const mfib_prefix_t mpfx = {
503 .fp_proto = fp,
504 .fp_len = (is_ip6 ? 128 : 32),
505 .fp_grp_addr = tun_dst_pfx.fp_addr,
506 };
Eyal Barifff67c82016-12-21 12:45:47 +0200507
Eyal Bari8f576482018-05-07 10:13:44 +0300508 /*
509 * Setup the (*,G) to receive traffic on the mcast group
510 * - the forwarding interface is for-us
511 * - the accepting interface is that from the API
512 */
513 mfib_table_entry_path_update (t->encap_fib_index,
514 &mpfx,
515 MFIB_SOURCE_VXLAN,
516 &path, MFIB_ITF_FLAG_FORWARD);
Neale Ranns32e1c012016-11-22 17:07:28 +0000517
Eyal Bari8f576482018-05-07 10:13:44 +0300518 path.frp_sw_if_index = a->mcast_sw_if_index;
519 path.frp_flags = FIB_ROUTE_PATH_FLAG_NONE;
520 mfei = mfib_table_entry_path_update (t->encap_fib_index,
521 &mpfx,
522 MFIB_SOURCE_VXLAN,
523 &path,
524 MFIB_ITF_FLAG_ACCEPT);
Neale Ranns32e1c012016-11-22 17:07:28 +0000525
Eyal Bari8f576482018-05-07 10:13:44 +0300526 /*
527 * Create the mcast adjacency to send traffic to the group
528 */
529 ai = adj_mcast_add_or_lock (fp,
530 fib_proto_to_link (fp),
531 a->mcast_sw_if_index);
Neale Ranns32e1c012016-11-22 17:07:28 +0000532
Eyal Bari8f576482018-05-07 10:13:44 +0300533 /*
534 * create a new end-point
535 */
536 mcast_shared_add (&t->dst, mfei, ai);
537 }
Neale Ranns32e1c012016-11-22 17:07:28 +0000538
Eyal Bari8f576482018-05-07 10:13:44 +0300539 dpo_id_t dpo = DPO_INVALID;
540 mcast_shared_t ep = mcast_shared_get (&t->dst);
Neale Ranns32e1c012016-11-22 17:07:28 +0000541
Eyal Bari8f576482018-05-07 10:13:44 +0300542 /* Stack shared mcast dst mac addr rewrite on encap */
543 dpo_set (&dpo, DPO_ADJACENCY_MCAST,
544 fib_proto_to_dpo (fp), ep.mcast_adj_index);
Neale Ranns32e1c012016-11-22 17:07:28 +0000545
Eyal Bari8f576482018-05-07 10:13:44 +0300546 dpo_stack_from_node (encap_index, &t->next_dpo, &dpo);
547 dpo_reset (&dpo);
Eyal Barifff67c82016-12-21 12:45:47 +0200548 flood_class = VNET_FLOOD_CLASS_TUNNEL_MASTER;
John Lo56912c82016-12-08 16:10:02 -0500549 }
550
Eyal Bari8f576482018-05-07 10:13:44 +0300551 vnet_get_sw_interface (vnet_get_main (), sw_if_index)->flood_class =
552 flood_class;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700553 }
554 else
555 {
556 /* deleting a tunnel: tunnel must exist */
John Lo37682e12016-11-30 12:51:39 -0500557 if (!p)
Eyal Bari8f576482018-05-07 10:13:44 +0300558 return VNET_API_ERROR_NO_SUCH_ENTRY;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700559
Jon Loeliger3d460bd2018-02-01 16:36:12 -0600560 u32 instance = p[0];
561 t = pool_elt_at_index (vxm->tunnels, instance);
Ed Warnickecb9cada2015-12-08 15:45:58 -0700562
Eyal Baribc799c92017-04-06 03:26:59 +0300563 sw_if_index = t->sw_if_index;
Eyal Bari8f576482018-05-07 10:13:44 +0300564 vnet_sw_interface_set_flags (vnm, sw_if_index, 0 /* down */ );
Ed Warnickecb9cada2015-12-08 15:45:58 -0700565
Jon Loeliger3d460bd2018-02-01 16:36:12 -0600566 vxm->tunnel_index_by_sw_if_index[sw_if_index] = ~0;
Dave Wallace60231f32015-12-17 21:04:30 -0500567
John Loc42912d2016-11-07 18:30:47 -0500568 if (!is_ip6)
Eyal Bari8f576482018-05-07 10:13:44 +0300569 hash_unset (vxm->vxlan4_tunnel_by_key, key4.as_u64);
Chris Luke99cb3352016-04-26 10:49:53 -0400570 else
John Loe6bfeab2018-01-04 16:39:42 -0500571 hash_unset_mem_free (&vxm->vxlan6_tunnel_by_key, &key6);
Eyal Barifff67c82016-12-21 12:45:47 +0200572
Eyal Bari8f576482018-05-07 10:13:44 +0300573 if (!ip46_address_is_multicast (&t->dst))
574 {
575 vtep_addr_unref (&t->src);
576 fib_entry_child_remove (t->fib_entry_index, t->sibling_index);
577 fib_table_entry_delete_index (t->fib_entry_index, FIB_SOURCE_RR);
578 }
579 else if (vtep_addr_unref (&t->dst) == 0)
580 {
581 mcast_shared_remove (&t->dst);
582 }
Eyal Barifff67c82016-12-21 12:45:47 +0200583
Eyal Bari554075a2018-02-13 15:17:17 +0200584 vnet_delete_hw_interface (vnm, t->hw_if_index);
Jon Loeliger25ef2b52018-02-23 17:02:41 -0600585 hash_unset (vxm->instance_used, t->user_instance);
Jon Loeliger3d460bd2018-02-01 16:36:12 -0600586
Eyal Bari8f576482018-05-07 10:13:44 +0300587 fib_node_deinit (&t->node);
Ed Warnickecb9cada2015-12-08 15:45:58 -0700588 pool_put (vxm->tunnels, t);
589 }
590
591 if (sw_if_indexp)
Eyal Bari8f576482018-05-07 10:13:44 +0300592 *sw_if_indexp = sw_if_index;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700593
594 return 0;
595}
596
Eyal Bari8f576482018-05-07 10:13:44 +0300597static uword
598get_decap_next_for_node (u32 node_index, u32 ipv4_set)
Hongjun Nibeb4bf72016-11-25 00:03:46 +0800599{
Eyal Bari8f576482018-05-07 10:13:44 +0300600 vxlan_main_t *vxm = &vxlan_main;
601 vlib_main_t *vm = vxm->vlib_main;
Eyal Bari0765c6e2017-01-29 12:40:50 +0200602 uword input_node = (ipv4_set) ? vxlan4_input_node.index :
603 vxlan6_input_node.index;
Hongjun Nibeb4bf72016-11-25 00:03:46 +0800604
Eyal Bari0765c6e2017-01-29 12:40:50 +0200605 return vlib_node_add_next (vm, input_node, node_index);
Hongjun Nibeb4bf72016-11-25 00:03:46 +0800606}
607
Eyal Bari8f576482018-05-07 10:13:44 +0300608static uword
609unformat_decap_next (unformat_input_t * input, va_list * args)
Ed Warnickecb9cada2015-12-08 15:45:58 -0700610{
Eyal Bari8f576482018-05-07 10:13:44 +0300611 u32 *result = va_arg (*args, u32 *);
Hongjun Nibeb4bf72016-11-25 00:03:46 +0800612 u32 ipv4_set = va_arg (*args, int);
Eyal Bari8f576482018-05-07 10:13:44 +0300613 vxlan_main_t *vxm = &vxlan_main;
614 vlib_main_t *vm = vxm->vlib_main;
Hongjun Nibeb4bf72016-11-25 00:03:46 +0800615 u32 node_index;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700616 u32 tmp;
Hongjun Nibeb4bf72016-11-25 00:03:46 +0800617
Ed Warnickecb9cada2015-12-08 15:45:58 -0700618 if (unformat (input, "l2"))
619 *result = VXLAN_INPUT_NEXT_L2_INPUT;
Hongjun Nibeb4bf72016-11-25 00:03:46 +0800620 else if (unformat (input, "node %U", unformat_vlib_node, vm, &node_index))
Eyal Bari8f576482018-05-07 10:13:44 +0300621 *result = get_decap_next_for_node (node_index, ipv4_set);
Ed Warnickecb9cada2015-12-08 15:45:58 -0700622 else if (unformat (input, "%d", &tmp))
623 *result = tmp;
624 else
625 return 0;
626 return 1;
627}
628
629static clib_error_t *
630vxlan_add_del_tunnel_command_fn (vlib_main_t * vm,
Eyal Bari8f576482018-05-07 10:13:44 +0300631 unformat_input_t * input,
632 vlib_cli_command_t * cmd)
Ed Warnickecb9cada2015-12-08 15:45:58 -0700633{
Eyal Bari8f576482018-05-07 10:13:44 +0300634 unformat_input_t _line_input, *line_input = &_line_input;
635 ip46_address_t src = ip46_address_initializer, dst =
636 ip46_address_initializer;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700637 u8 is_add = 1;
638 u8 src_set = 0;
639 u8 dst_set = 0;
Eyal Baric5b13602016-11-24 19:42:43 +0200640 u8 grp_set = 0;
Chris Luke99cb3352016-04-26 10:49:53 -0400641 u8 ipv4_set = 0;
642 u8 ipv6_set = 0;
Jon Loeliger3d460bd2018-02-01 16:36:12 -0600643 u32 instance = ~0;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700644 u32 encap_fib_index = 0;
Eyal Baric5b13602016-11-24 19:42:43 +0200645 u32 mcast_sw_if_index = ~0;
Hongjun Nibeb4bf72016-11-25 00:03:46 +0800646 u32 decap_next_index = VXLAN_INPUT_NEXT_L2_INPUT;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700647 u32 vni = 0;
Eyal Bariaa0180b2018-03-27 11:43:57 +0300648 u32 table_id;
Billy McFalla9a20e72017-02-15 11:39:12 -0500649 clib_error_t *error = NULL;
Eyal Baric5b13602016-11-24 19:42:43 +0200650
Ed Warnickecb9cada2015-12-08 15:45:58 -0700651 /* Get a line of input. */
Eyal Bari8f576482018-05-07 10:13:44 +0300652 if (!unformat_user (input, unformat_line_input, line_input))
Ed Warnickecb9cada2015-12-08 15:45:58 -0700653 return 0;
654
Eyal Bari8f576482018-05-07 10:13:44 +0300655 while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
656 {
657 if (unformat (line_input, "del"))
658 {
659 is_add = 0;
660 }
661 else if (unformat (line_input, "instance %d", &instance))
662 ;
663 else if (unformat (line_input, "src %U",
664 unformat_ip46_address, &src, IP46_TYPE_ANY))
665 {
666 src_set = 1;
667 ip46_address_is_ip4 (&src) ? (ipv4_set = 1) : (ipv6_set = 1);
668 }
669 else if (unformat (line_input, "dst %U",
670 unformat_ip46_address, &dst, IP46_TYPE_ANY))
671 {
672 dst_set = 1;
673 ip46_address_is_ip4 (&dst) ? (ipv4_set = 1) : (ipv6_set = 1);
674 }
675 else if (unformat (line_input, "group %U %U",
676 unformat_ip46_address, &dst, IP46_TYPE_ANY,
677 unformat_vnet_sw_interface,
678 vnet_get_main (), &mcast_sw_if_index))
679 {
680 grp_set = dst_set = 1;
681 ip46_address_is_ip4 (&dst) ? (ipv4_set = 1) : (ipv6_set = 1);
682 }
683 else if (unformat (line_input, "encap-vrf-id %d", &table_id))
684 {
685 encap_fib_index =
686 fib_table_find (fib_ip_proto (ipv6_set), table_id);
687 if (encap_fib_index == ~0)
688 {
689 error =
690 clib_error_return (0, "nonexistent encap-vrf-id %d",
691 table_id);
692 break;
693 }
694 }
695 else if (unformat (line_input, "decap-next %U", unformat_decap_next,
696 &decap_next_index, ipv4_set))
697 ;
698 else if (unformat (line_input, "vni %d", &vni))
699 ;
700 else
701 {
702 error = clib_error_return (0, "parse error: '%U'",
703 format_unformat_error, line_input);
704 break;
705 }
706 }
Ed Warnickecb9cada2015-12-08 15:45:58 -0700707
Eyal Bariaa0180b2018-03-27 11:43:57 +0300708 unformat_free (line_input);
709
710 if (error)
711 return error;
712
Ed Warnickecb9cada2015-12-08 15:45:58 -0700713 if (src_set == 0)
Eyal Bariaa0180b2018-03-27 11:43:57 +0300714 return clib_error_return (0, "tunnel src address not specified");
Ed Warnickecb9cada2015-12-08 15:45:58 -0700715
716 if (dst_set == 0)
Eyal Bariaa0180b2018-03-27 11:43:57 +0300717 return clib_error_return (0, "tunnel dst address not specified");
Ed Warnickecb9cada2015-12-08 15:45:58 -0700718
Eyal Bari8f576482018-05-07 10:13:44 +0300719 if (grp_set && !ip46_address_is_multicast (&dst))
Eyal Bariaa0180b2018-03-27 11:43:57 +0300720 return clib_error_return (0, "tunnel group address not multicast");
Eyal Baric5b13602016-11-24 19:42:43 +0200721
Eyal Bari8f576482018-05-07 10:13:44 +0300722 if (grp_set == 0 && ip46_address_is_multicast (&dst))
Eyal Bariaa0180b2018-03-27 11:43:57 +0300723 return clib_error_return (0, "dst address must be unicast");
John Lo56912c82016-12-08 16:10:02 -0500724
Eyal Baric5b13602016-11-24 19:42:43 +0200725 if (grp_set && mcast_sw_if_index == ~0)
Eyal Bariaa0180b2018-03-27 11:43:57 +0300726 return clib_error_return (0, "tunnel nonexistent multicast device");
Eyal Baric5b13602016-11-24 19:42:43 +0200727
Chris Luke99cb3352016-04-26 10:49:53 -0400728 if (ipv4_set && ipv6_set)
Eyal Bariaa0180b2018-03-27 11:43:57 +0300729 return clib_error_return (0, "both IPv4 and IPv6 addresses specified");
Chris Luke99cb3352016-04-26 10:49:53 -0400730
Eyal Bari8f576482018-05-07 10:13:44 +0300731 if (ip46_address_cmp (&src, &dst) == 0)
Eyal Bariaa0180b2018-03-27 11:43:57 +0300732 return clib_error_return (0, "src and dst addresses are identical");
Chris Luke99cb3352016-04-26 10:49:53 -0400733
Hongjun Nibeb4bf72016-11-25 00:03:46 +0800734 if (decap_next_index == ~0)
Eyal Bariaa0180b2018-03-27 11:43:57 +0300735 return clib_error_return (0, "next node not found");
Hongjun Nibeb4bf72016-11-25 00:03:46 +0800736
Ed Warnickecb9cada2015-12-08 15:45:58 -0700737 if (vni == 0)
Eyal Bariaa0180b2018-03-27 11:43:57 +0300738 return clib_error_return (0, "vni not specified");
Ed Warnickecb9cada2015-12-08 15:45:58 -0700739
Eyal Bari8f576482018-05-07 10:13:44 +0300740 if (vni >> 24)
Eyal Bariaa0180b2018-03-27 11:43:57 +0300741 return clib_error_return (0, "vni %d out of range", vni);
Ed Warnickecb9cada2015-12-08 15:45:58 -0700742
Eyal Bariaa0180b2018-03-27 11:43:57 +0300743 vnet_vxlan_add_del_tunnel_args_t a = {
Eyal Bari8f576482018-05-07 10:13:44 +0300744 .is_add = is_add,
745 .is_ip6 = ipv6_set,
746 .instance = instance,
Eyal Bariaa0180b2018-03-27 11:43:57 +0300747#define _(x) .x = x,
Eyal Bari8f576482018-05-07 10:13:44 +0300748 foreach_copy_field
Ed Warnickecb9cada2015-12-08 15:45:58 -0700749#undef _
Eyal Bariaa0180b2018-03-27 11:43:57 +0300750 };
Jon Loeliger3d460bd2018-02-01 16:36:12 -0600751
Eyal Bariaa0180b2018-03-27 11:43:57 +0300752 u32 tunnel_sw_if_index;
753 int rv = vnet_vxlan_add_del_tunnel (&a, &tunnel_sw_if_index);
Ed Warnickecb9cada2015-12-08 15:45:58 -0700754
Eyal Bari8f576482018-05-07 10:13:44 +0300755 switch (rv)
Ed Warnickecb9cada2015-12-08 15:45:58 -0700756 {
757 case 0:
Pierre Pfister78ea9c22016-05-23 12:51:54 +0100758 if (is_add)
Eyal Bari8f576482018-05-07 10:13:44 +0300759 vlib_cli_output (vm, "%U\n", format_vnet_sw_if_index_name,
760 vnet_get_main (), tunnel_sw_if_index);
Ed Warnickecb9cada2015-12-08 15:45:58 -0700761 break;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700762
763 case VNET_API_ERROR_TUNNEL_EXIST:
Eyal Bariaa0180b2018-03-27 11:43:57 +0300764 return clib_error_return (0, "tunnel already exists...");
Ed Warnickecb9cada2015-12-08 15:45:58 -0700765
766 case VNET_API_ERROR_NO_SUCH_ENTRY:
Eyal Bariaa0180b2018-03-27 11:43:57 +0300767 return clib_error_return (0, "tunnel does not exist...");
Ed Warnickecb9cada2015-12-08 15:45:58 -0700768
Jon Loeliger3d460bd2018-02-01 16:36:12 -0600769 case VNET_API_ERROR_INSTANCE_IN_USE:
Eyal Bariaa0180b2018-03-27 11:43:57 +0300770 return clib_error_return (0, "Instance is in use");
Jon Loeliger3d460bd2018-02-01 16:36:12 -0600771
Ed Warnickecb9cada2015-12-08 15:45:58 -0700772 default:
Eyal Bariaa0180b2018-03-27 11:43:57 +0300773 return clib_error_return
Eyal Bari8f576482018-05-07 10:13:44 +0300774 (0, "vnet_vxlan_add_del_tunnel returned %d", rv);
Ed Warnickecb9cada2015-12-08 15:45:58 -0700775 }
776
Billy McFalla9a20e72017-02-15 11:39:12 -0500777 return error;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700778}
779
Billy McFallc5d9cda2016-09-14 10:39:58 -0400780/*?
781 * Add or delete a VXLAN Tunnel.
782 *
783 * VXLAN provides the features needed to allow L2 bridge domains (BDs)
784 * to span multiple servers. This is done by building an L2 overlay on
785 * top of an L3 network underlay using VXLAN tunnels.
786 *
787 * This makes it possible for servers to be co-located in the same data
788 * center or be separated geographically as long as they are reachable
789 * through the underlay L3 network.
790 *
791 * You can refer to this kind of L2 overlay bridge domain as a VXLAN
792 * (Virtual eXtensible VLAN) segment.
793 *
794 * @cliexpar
795 * Example of how to create a VXLAN Tunnel:
John Loc42912d2016-11-07 18:30:47 -0500796 * @cliexcmd{create vxlan tunnel src 10.0.3.1 dst 10.0.3.3 vni 13 encap-vrf-id 7}
Jon Loeliger3d460bd2018-02-01 16:36:12 -0600797 * Example of how to create a VXLAN Tunnel with a known name, vxlan_tunnel42:
798 * @cliexcmd{create vxlan tunnel src 10.0.3.1 dst 10.0.3.3 instance 42}
Billy McFallc5d9cda2016-09-14 10:39:58 -0400799 * Example of how to delete a VXLAN Tunnel:
800 * @cliexcmd{create vxlan tunnel src 10.0.3.1 dst 10.0.3.3 vni 13 del}
801 ?*/
802/* *INDENT-OFF* */
Ed Warnickecb9cada2015-12-08 15:45:58 -0700803VLIB_CLI_COMMAND (create_vxlan_tunnel_command, static) = {
804 .path = "create vxlan tunnel",
Eyal Bari8f576482018-05-07 10:13:44 +0300805 .short_help =
Eyal Baric5b13602016-11-24 19:42:43 +0200806 "create vxlan tunnel src <local-vtep-addr>"
807 " {dst <remote-vtep-addr>|group <mcast-vtep-addr> <intf-name>} vni <nn>"
Jon Loeliger3d460bd2018-02-01 16:36:12 -0600808 " [instance <id>]"
Hongjun Nibeb4bf72016-11-25 00:03:46 +0800809 " [encap-vrf-id <nn>] [decap-next [l2|node <name>]] [del]",
Ed Warnickecb9cada2015-12-08 15:45:58 -0700810 .function = vxlan_add_del_tunnel_command_fn,
811};
Billy McFallc5d9cda2016-09-14 10:39:58 -0400812/* *INDENT-ON* */
Ed Warnickecb9cada2015-12-08 15:45:58 -0700813
814static clib_error_t *
815show_vxlan_tunnel_command_fn (vlib_main_t * vm,
Eyal Bari8f576482018-05-07 10:13:44 +0300816 unformat_input_t * input,
817 vlib_cli_command_t * cmd)
Ed Warnickecb9cada2015-12-08 15:45:58 -0700818{
Eyal Bari8f576482018-05-07 10:13:44 +0300819 vxlan_main_t *vxm = &vxlan_main;
820 vxlan_tunnel_t *t;
821
Ed Warnickecb9cada2015-12-08 15:45:58 -0700822 if (pool_elts (vxm->tunnels) == 0)
823 vlib_cli_output (vm, "No vxlan tunnels configured...");
824
Eyal Bari8f576482018-05-07 10:13:44 +0300825/* *INDENT-OFF* */
Ed Warnickecb9cada2015-12-08 15:45:58 -0700826 pool_foreach (t, vxm->tunnels,
827 ({
828 vlib_cli_output (vm, "%U", format_vxlan_tunnel, t);
829 }));
Eyal Bari8f576482018-05-07 10:13:44 +0300830/* *INDENT-ON* */
831
Ed Warnickecb9cada2015-12-08 15:45:58 -0700832 return 0;
833}
834
Billy McFallc5d9cda2016-09-14 10:39:58 -0400835/*?
836 * Display all the VXLAN Tunnel entries.
837 *
838 * @cliexpar
839 * Example of how to display the VXLAN Tunnel entries:
840 * @cliexstart{show vxlan tunnel}
Hongjun Nibeb4bf72016-11-25 00:03:46 +0800841 * [0] src 10.0.3.1 dst 10.0.3.3 vni 13 encap_fib_index 0 sw_if_index 5 decap_next l2
Billy McFallc5d9cda2016-09-14 10:39:58 -0400842 * @cliexend
843 ?*/
844/* *INDENT-OFF* */
Ed Warnickecb9cada2015-12-08 15:45:58 -0700845VLIB_CLI_COMMAND (show_vxlan_tunnel_command, static) = {
846 .path = "show vxlan tunnel",
Billy McFallc5d9cda2016-09-14 10:39:58 -0400847 .short_help = "show vxlan tunnel",
Ed Warnickecb9cada2015-12-08 15:45:58 -0700848 .function = show_vxlan_tunnel_command_fn,
849};
Billy McFallc5d9cda2016-09-14 10:39:58 -0400850/* *INDENT-ON* */
Ed Warnickecb9cada2015-12-08 15:45:58 -0700851
Chris Luke99cb3352016-04-26 10:49:53 -0400852
Eyal Bari8f576482018-05-07 10:13:44 +0300853void
854vnet_int_vxlan_bypass_mode (u32 sw_if_index, u8 is_ip6, u8 is_enable)
John Lo2b81eb82017-01-30 13:12:10 -0500855{
856 if (is_ip6)
857 vnet_feature_enable_disable ("ip6-unicast", "ip6-vxlan-bypass",
858 sw_if_index, is_enable, 0, 0);
859 else
860 vnet_feature_enable_disable ("ip4-unicast", "ip4-vxlan-bypass",
861 sw_if_index, is_enable, 0, 0);
862}
863
864
865static clib_error_t *
866set_ip_vxlan_bypass (u32 is_ip6,
Eyal Bari8f576482018-05-07 10:13:44 +0300867 unformat_input_t * input, vlib_cli_command_t * cmd)
John Lo2b81eb82017-01-30 13:12:10 -0500868{
Eyal Bari8f576482018-05-07 10:13:44 +0300869 unformat_input_t _line_input, *line_input = &_line_input;
870 vnet_main_t *vnm = vnet_get_main ();
871 clib_error_t *error = 0;
John Lo2b81eb82017-01-30 13:12:10 -0500872 u32 sw_if_index, is_enable;
873
874 sw_if_index = ~0;
875 is_enable = 1;
876
Eyal Bari8f576482018-05-07 10:13:44 +0300877 if (!unformat_user (input, unformat_line_input, line_input))
John Lo2b81eb82017-01-30 13:12:10 -0500878 return 0;
879
880 while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
881 {
Eyal Bari8f576482018-05-07 10:13:44 +0300882 if (unformat_user
883 (line_input, unformat_vnet_sw_interface, vnm, &sw_if_index))
884 ;
John Lo2b81eb82017-01-30 13:12:10 -0500885 else if (unformat (line_input, "del"))
Eyal Bari8f576482018-05-07 10:13:44 +0300886 is_enable = 0;
John Lo2b81eb82017-01-30 13:12:10 -0500887 else
Eyal Bari8f576482018-05-07 10:13:44 +0300888 {
John Lo2b81eb82017-01-30 13:12:10 -0500889 error = unformat_parse_error (line_input);
890 goto done;
891 }
892 }
893
894 if (~0 == sw_if_index)
895 {
896 error = clib_error_return (0, "unknown interface `%U'",
897 format_unformat_error, line_input);
898 goto done;
899 }
900
901 vnet_int_vxlan_bypass_mode (sw_if_index, is_ip6, is_enable);
902
Eyal Bari8f576482018-05-07 10:13:44 +0300903done:
Billy McFalla9a20e72017-02-15 11:39:12 -0500904 unformat_free (line_input);
905
John Lo2b81eb82017-01-30 13:12:10 -0500906 return error;
907}
908
909static clib_error_t *
910set_ip4_vxlan_bypass (vlib_main_t * vm,
Eyal Bari8f576482018-05-07 10:13:44 +0300911 unformat_input_t * input, vlib_cli_command_t * cmd)
John Lo2b81eb82017-01-30 13:12:10 -0500912{
913 return set_ip_vxlan_bypass (0, input, cmd);
914}
915
916/*?
Eyal Bari8f576482018-05-07 10:13:44 +0300917 * This command adds the 'ip4-vxlan-bypass' graph node for a given interface.
John Lo2b81eb82017-01-30 13:12:10 -0500918 * By adding the IPv4 vxlan-bypass graph node to an interface, the node checks
Eyal Bari8f576482018-05-07 10:13:44 +0300919 * for and validate input vxlan packet and bypass ip4-lookup, ip4-local,
920 * ip4-udp-lookup nodes to speedup vxlan packet forwarding. This node will
John Lo2b81eb82017-01-30 13:12:10 -0500921 * cause extra overhead to for non-vxlan packets which is kept at a minimum.
922 *
923 * @cliexpar
924 * @parblock
925 * Example of graph node before ip4-vxlan-bypass is enabled:
926 * @cliexstart{show vlib graph ip4-vxlan-bypass}
927 * Name Next Previous
928 * ip4-vxlan-bypass error-drop [0]
929 * vxlan4-input [1]
Eyal Bari8f576482018-05-07 10:13:44 +0300930 * ip4-lookup [2]
John Lo2b81eb82017-01-30 13:12:10 -0500931 * @cliexend
932 *
933 * Example of how to enable ip4-vxlan-bypass on an interface:
934 * @cliexcmd{set interface ip vxlan-bypass GigabitEthernet2/0/0}
935 *
936 * Example of graph node after ip4-vxlan-bypass is enabled:
937 * @cliexstart{show vlib graph ip4-vxlan-bypass}
Eyal Bari8f576482018-05-07 10:13:44 +0300938 * Name Next Previous
939 * ip4-vxlan-bypass error-drop [0] ip4-input
940 * vxlan4-input [1] ip4-input-no-checksum
941 * ip4-lookup [2]
John Lo2b81eb82017-01-30 13:12:10 -0500942 * @cliexend
943 *
944 * Example of how to display the feature enabed on an interface:
945 * @cliexstart{show ip interface features GigabitEthernet2/0/0}
946 * IP feature paths configured on GigabitEthernet2/0/0...
947 * ...
948 * ipv4 unicast:
949 * ip4-vxlan-bypass
950 * ip4-lookup
951 * ...
952 * @cliexend
953 *
954 * Example of how to disable ip4-vxlan-bypass on an interface:
955 * @cliexcmd{set interface ip vxlan-bypass GigabitEthernet2/0/0 del}
956 * @endparblock
957?*/
958/* *INDENT-OFF* */
959VLIB_CLI_COMMAND (set_interface_ip_vxlan_bypass_command, static) = {
960 .path = "set interface ip vxlan-bypass",
961 .function = set_ip4_vxlan_bypass,
962 .short_help = "set interface ip vxlan-bypass <interface> [del]",
963};
964/* *INDENT-ON* */
965
966static clib_error_t *
967set_ip6_vxlan_bypass (vlib_main_t * vm,
Eyal Bari8f576482018-05-07 10:13:44 +0300968 unformat_input_t * input, vlib_cli_command_t * cmd)
John Lo2b81eb82017-01-30 13:12:10 -0500969{
970 return set_ip_vxlan_bypass (1, input, cmd);
971}
972
973/*?
Eyal Bari8f576482018-05-07 10:13:44 +0300974 * This command adds the 'ip6-vxlan-bypass' graph node for a given interface.
John Lo2b81eb82017-01-30 13:12:10 -0500975 * By adding the IPv6 vxlan-bypass graph node to an interface, the node checks
Eyal Bari8f576482018-05-07 10:13:44 +0300976 * for and validate input vxlan packet and bypass ip6-lookup, ip6-local,
977 * ip6-udp-lookup nodes to speedup vxlan packet forwarding. This node will
John Lo2b81eb82017-01-30 13:12:10 -0500978 * cause extra overhead to for non-vxlan packets which is kept at a minimum.
979 *
980 * @cliexpar
981 * @parblock
982 * Example of graph node before ip6-vxlan-bypass is enabled:
983 * @cliexstart{show vlib graph ip6-vxlan-bypass}
984 * Name Next Previous
985 * ip6-vxlan-bypass error-drop [0]
986 * vxlan6-input [1]
Eyal Bari8f576482018-05-07 10:13:44 +0300987 * ip6-lookup [2]
John Lo2b81eb82017-01-30 13:12:10 -0500988 * @cliexend
989 *
990 * Example of how to enable ip6-vxlan-bypass on an interface:
991 * @cliexcmd{set interface ip6 vxlan-bypass GigabitEthernet2/0/0}
992 *
993 * Example of graph node after ip6-vxlan-bypass is enabled:
994 * @cliexstart{show vlib graph ip6-vxlan-bypass}
Eyal Bari8f576482018-05-07 10:13:44 +0300995 * Name Next Previous
996 * ip6-vxlan-bypass error-drop [0] ip6-input
997 * vxlan6-input [1] ip4-input-no-checksum
998 * ip6-lookup [2]
John Lo2b81eb82017-01-30 13:12:10 -0500999 * @cliexend
1000 *
1001 * Example of how to display the feature enabed on an interface:
1002 * @cliexstart{show ip interface features GigabitEthernet2/0/0}
1003 * IP feature paths configured on GigabitEthernet2/0/0...
1004 * ...
1005 * ipv6 unicast:
1006 * ip6-vxlan-bypass
1007 * ip6-lookup
1008 * ...
1009 * @cliexend
1010 *
1011 * Example of how to disable ip6-vxlan-bypass on an interface:
1012 * @cliexcmd{set interface ip6 vxlan-bypass GigabitEthernet2/0/0 del}
1013 * @endparblock
1014?*/
1015/* *INDENT-OFF* */
1016VLIB_CLI_COMMAND (set_interface_ip6_vxlan_bypass_command, static) = {
1017 .path = "set interface ip6 vxlan-bypass",
1018 .function = set_ip6_vxlan_bypass,
1019 .short_help = "set interface ip vxlan-bypass <interface> [del]",
1020};
1021/* *INDENT-ON* */
1022
Eyal Bari8f576482018-05-07 10:13:44 +03001023clib_error_t *
1024vxlan_init (vlib_main_t * vm)
Ed Warnickecb9cada2015-12-08 15:45:58 -07001025{
Eyal Bari8f576482018-05-07 10:13:44 +03001026 vxlan_main_t *vxm = &vxlan_main;
1027
1028 vxm->vnet_main = vnet_get_main ();
Ed Warnickecb9cada2015-12-08 15:45:58 -07001029 vxm->vlib_main = vm;
1030
Chris Luke99cb3352016-04-26 10:49:53 -04001031 /* initialize the ip6 hash */
Eyal Bari8f576482018-05-07 10:13:44 +03001032 vxm->vxlan6_tunnel_by_key = hash_create_mem (0,
1033 sizeof (vxlan6_tunnel_key_t),
1034 sizeof (uword));
1035 vxm->vtep6 = hash_create_mem (0, sizeof (ip6_address_t), sizeof (uword));
1036 vxm->mcast_shared = hash_create_mem (0,
1037 sizeof (ip46_address_t),
1038 sizeof (mcast_shared_t));
Chris Luke99cb3352016-04-26 10:49:53 -04001039
Eyal Bari8f576482018-05-07 10:13:44 +03001040 udp_register_dst_port (vm, UDP_DST_PORT_vxlan,
1041 vxlan4_input_node.index, /* is_ip4 */ 1);
Chris Luke99cb3352016-04-26 10:49:53 -04001042 udp_register_dst_port (vm, UDP_DST_PORT_vxlan6,
Eyal Bari8f576482018-05-07 10:13:44 +03001043 vxlan6_input_node.index, /* is_ip4 */ 0);
John Loc42912d2016-11-07 18:30:47 -05001044
Eyal Bari8f576482018-05-07 10:13:44 +03001045 fib_node_register_type (FIB_NODE_TYPE_VXLAN_TUNNEL, &vxlan_vft);
John Loc42912d2016-11-07 18:30:47 -05001046
Ed Warnickecb9cada2015-12-08 15:45:58 -07001047 return 0;
1048}
1049
Eyal Bari8f576482018-05-07 10:13:44 +03001050VLIB_INIT_FUNCTION (vxlan_init);
Jon Loeliger3d460bd2018-02-01 16:36:12 -06001051
1052/*
Eyal Bari8f576482018-05-07 10:13:44 +03001053 * fd.io coding-style-patch-verification: ON
1054 *
Jon Loeliger3d460bd2018-02-01 16:36:12 -06001055 * Local Variables:
1056 * eval: (c-set-style "gnu")
1057 * End:
1058 */