2 * p2p_ethernet.c: p2p ethernet
4 * Copyright (c) 2012 Cisco and/or its affiliates.
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at:
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
18 #include <vppinfra/bihash_16_8.h>
19 #include <vnet/vnet.h>
20 #include <vnet/ethernet/p2p_ethernet.h>
21 #include <vnet/l2/l2_input.h>
23 p2p_ethernet_main_t p2p_main;
26 create_p2pe_key (p2p_key_t * p2pe_key, u32 parent_if_index, u8 * client_mac)
28 clib_memcpy (p2pe_key->mac, client_mac, 6);
30 p2pe_key->hw_if_index = parent_if_index;
35 p2p_ethernet_lookup (u32 parent_if_index, u8 * client_mac)
37 p2p_ethernet_main_t *p2pm = &p2p_main;
41 create_p2pe_key (&p2pe_key, parent_if_index, client_mac);
42 p = hash_get_mem (p2pm->p2p_ethernet_by_key, &p2pe_key);
50 p2p_ethernet_add_del (vlib_main_t * vm, u32 parent_if_index,
51 u8 * client_mac, u32 p2pe_subif_id, int is_add,
54 vnet_main_t *vnm = vnet_get_main ();
55 p2p_ethernet_main_t *p2pm = &p2p_main;
56 vnet_interface_main_t *im = &vnm->interface_main;
58 u32 p2pe_sw_if_index = ~0;
59 p2pe_sw_if_index = p2p_ethernet_lookup (parent_if_index, client_mac);
66 if (p2pe_sw_if_index == ~0)
68 vnet_hw_interface_t *hi;
70 hi = vnet_get_hw_interface (vnm, parent_if_index);
71 if (hi->bond_info == VNET_HW_INTERFACE_BOND_INFO_SLAVE)
72 return VNET_API_ERROR_BOND_SLAVE_NOT_ALLOWED;
75 ((u64) (hi->sw_if_index) << 32) | (u64) p2pe_subif_id;
77 p = hash_get_mem (im->sw_if_index_by_sup_and_sub, &sup_and_sub_key);
82 ("p2p ethernet sub-interface on sw_if_index %d with sub id %d already exists\n",
83 hi->sw_if_index, p2pe_subif_id);
84 return VNET_API_ERROR_SUBIF_ALREADY_EXISTS;
86 vnet_sw_interface_t template = {
87 .type = VNET_SW_INTERFACE_TYPE_P2P,
88 .flood_class = VNET_FLOOD_CLASS_NORMAL,
89 .sup_sw_if_index = hi->sw_if_index,
90 .sub.id = p2pe_subif_id
93 clib_memcpy (template.p2p.client_mac, client_mac,
94 sizeof (template.p2p.client_mac));
96 if (vnet_create_sw_interface (vnm, &template, &p2pe_sw_if_index))
97 return VNET_API_ERROR_SUBIF_CREATE_FAILED;
99 /* Allocate counters for this interface. */
103 vnet_interface_counter_lock (im);
105 for (i = 0; i < vec_len (im->sw_if_counters); i++)
107 vlib_validate_simple_counter (&im->sw_if_counters[i],
109 vlib_zero_simple_counter (&im->sw_if_counters[i],
113 for (i = 0; i < vec_len (im->combined_sw_if_counters); i++)
115 vlib_validate_combined_counter (&im->combined_sw_if_counters
116 [i], p2pe_sw_if_index);
117 vlib_zero_combined_counter (&im->combined_sw_if_counters[i],
121 vnet_interface_counter_unlock (im);
124 vnet_interface_main_t *im = &vnm->interface_main;
126 ((u64) (hi->sw_if_index) << 32) | (u64) p2pe_subif_id;
127 u64 *kp = clib_mem_alloc (sizeof (*kp));
129 *kp = sup_and_sub_key;
130 hash_set (hi->sub_interface_sw_if_index_by_id, p2pe_subif_id,
132 hash_set_mem (im->sw_if_index_by_sup_and_sub, kp, p2pe_sw_if_index);
134 p2p_key_t *p_p2pe_key;
135 p_p2pe_key = clib_mem_alloc (sizeof (*p_p2pe_key));
136 create_p2pe_key (p_p2pe_key, parent_if_index, client_mac);
137 hash_set_mem (p2pm->p2p_ethernet_by_key, p_p2pe_key,
141 *p2pe_if_index = p2pe_sw_if_index;
143 vec_validate (p2pm->p2p_ethernet_by_sw_if_index, parent_if_index);
144 if (p2pm->p2p_ethernet_by_sw_if_index[parent_if_index] == 0)
146 vnet_feature_enable_disable ("device-input",
147 "p2p-ethernet-input",
148 parent_if_index, 1, 0, 0);
149 vnet_feature_enable_disable ("port-rx-eth", "p2p-ethernet-input",
150 parent_if_index, 1, 0, 0);
151 /* Set promiscuous mode on the l2 interface */
152 ethernet_set_flags (vnm, parent_if_index,
153 ETHERNET_INTERFACE_FLAG_ACCEPT_ALL);
156 p2pm->p2p_ethernet_by_sw_if_index[parent_if_index]++;
157 /* set the interface mode */
158 set_int_l2_mode (vm, vnm, MODE_L3, p2pe_sw_if_index, 0,
159 L2_BD_PORT_TYPE_NORMAL, 0, 0);
162 return VNET_API_ERROR_SUBIF_ALREADY_EXISTS;
166 if (p2pe_sw_if_index == ~0)
167 return VNET_API_ERROR_SUBIF_DOESNT_EXIST;
171 rv = vnet_delete_sub_interface (p2pe_sw_if_index);
174 vec_validate (p2pm->p2p_ethernet_by_sw_if_index,
176 if (p2pm->p2p_ethernet_by_sw_if_index[parent_if_index] == 1)
178 vnet_feature_enable_disable ("device-input",
179 "p2p-ethernet-input",
180 parent_if_index, 0, 0, 0);
181 vnet_feature_enable_disable ("port-rx-eth",
182 "p2p-ethernet-input",
183 parent_if_index, 0, 0, 0);
184 /* Disable promiscuous mode on the l2 interface */
185 ethernet_set_flags (vnm, parent_if_index, 0);
187 p2pm->p2p_ethernet_by_sw_if_index[parent_if_index]--;
189 /* Remove p2p_ethernet from hash map */
190 p2p_key_t *p_p2pe_key;
191 p_p2pe_key = clib_mem_alloc (sizeof (*p_p2pe_key));
192 create_p2pe_key (p_p2pe_key, parent_if_index, client_mac);
193 hash_unset_mem (p2pm->p2p_ethernet_by_key, p_p2pe_key);
200 static clib_error_t *
201 vnet_p2p_ethernet_add_del (vlib_main_t * vm, unformat_input_t * input,
202 vlib_cli_command_t * cmd)
204 vnet_main_t *vnm = vnet_get_main ();
208 u32 hw_if_index = ~0;
212 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
215 (input, "%U", unformat_vnet_hw_interface, vnm, &hw_if_index))
217 else if (unformat (input, "%U", unformat_ethernet_address, &client_mac))
219 else if (unformat (input, "sub-id %d", &sub_id))
221 else if (unformat (input, "del"))
227 if (hw_if_index == ~0)
228 return clib_error_return (0, "Please specify parent interface ...");
230 return clib_error_return (0, "Please specify client MAC address ...");
231 if (sub_id == ~0 && is_add)
232 return clib_error_return (0, "Please specify sub-interface id ...");
235 rv = p2p_ethernet_add_del (vm, hw_if_index, client_mac, sub_id, is_add, 0);
238 case VNET_API_ERROR_BOND_SLAVE_NOT_ALLOWED:
239 return clib_error_return (0,
240 "not allowed as parent interface belongs to a BondEthernet interface");
242 return clib_error_return (0,
243 "p2p ethernet for given parent interface and client mac already exists");
245 return clib_error_return (0,
246 "couldn't create p2p ethernet subinterface");
248 return clib_error_return (0,
249 "p2p ethernet for given parent interface and client mac doesn't exist");
256 VLIB_CLI_COMMAND (p2p_ethernet_add_del_command, static) = {
257 .path = "p2p_ethernet",
258 .function = vnet_p2p_ethernet_add_del,
259 .short_help = "p2p_ethernet <intfc> <mac-address> [sub-id <id>|del]",
262 static clib_error_t *
263 p2p_ethernet_init (vlib_main_t * vm)
265 p2p_ethernet_main_t *p2pm = &p2p_main;
267 p2pm->vlib_main = vm;
268 p2pm->vnet_main = vnet_get_main ();
269 p2pm->p2p_ethernet_by_key =
270 hash_create_mem (0, sizeof (p2p_key_t), sizeof (uword));
275 VLIB_INIT_FUNCTION (p2p_ethernet_init);
278 * fd.io coding-style-patch-verification: ON
281 * eval: (c-set-style "gnu")