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 vnet_interface_main_t *im = &vnm->interface_main;
101 ((u64) (hi->sw_if_index) << 32) | (u64) p2pe_subif_id;
102 u64 *kp = clib_mem_alloc (sizeof (*kp));
104 *kp = sup_and_sub_key;
105 hash_set (hi->sub_interface_sw_if_index_by_id, p2pe_subif_id,
107 hash_set_mem (im->sw_if_index_by_sup_and_sub, kp, p2pe_sw_if_index);
109 p2p_key_t *p_p2pe_key;
110 p_p2pe_key = clib_mem_alloc (sizeof (*p_p2pe_key));
111 create_p2pe_key (p_p2pe_key, parent_if_index, client_mac);
112 hash_set_mem (p2pm->p2p_ethernet_by_key, p_p2pe_key,
116 *p2pe_if_index = p2pe_sw_if_index;
118 vec_validate (p2pm->p2p_ethernet_by_sw_if_index, parent_if_index);
119 if (p2pm->p2p_ethernet_by_sw_if_index[parent_if_index] == 0)
121 vnet_feature_enable_disable ("device-input",
122 "p2p-ethernet-input",
123 parent_if_index, 1, 0, 0);
124 /* Set promiscuous mode on the l2 interface */
125 ethernet_set_flags (vnm, parent_if_index,
126 ETHERNET_INTERFACE_FLAG_ACCEPT_ALL);
129 p2pm->p2p_ethernet_by_sw_if_index[parent_if_index]++;
130 /* set the interface mode */
131 set_int_l2_mode (vm, vnm, MODE_L3, p2pe_subif_id, 0, 0, 0, 0);
134 return VNET_API_ERROR_SUBIF_ALREADY_EXISTS;
138 if (p2pe_sw_if_index == ~0)
139 return VNET_API_ERROR_SUBIF_DOESNT_EXIST;
143 rv = vnet_delete_sub_interface (p2pe_sw_if_index);
146 vec_validate (p2pm->p2p_ethernet_by_sw_if_index,
148 if (p2pm->p2p_ethernet_by_sw_if_index[parent_if_index] == 1)
150 vnet_feature_enable_disable ("device-input",
151 "p2p-ethernet-input",
152 parent_if_index, 0, 0, 0);
153 /* Disable promiscuous mode on the l2 interface */
154 ethernet_set_flags (vnm, parent_if_index, 0);
156 p2pm->p2p_ethernet_by_sw_if_index[parent_if_index]--;
158 /* Remove p2p_ethernet from hash map */
159 p2p_key_t *p_p2pe_key;
160 p_p2pe_key = clib_mem_alloc (sizeof (*p_p2pe_key));
161 create_p2pe_key (p_p2pe_key, parent_if_index, client_mac);
162 hash_unset_mem (p2pm->p2p_ethernet_by_key, p_p2pe_key);
169 static clib_error_t *
170 vnet_p2p_ethernet_add_del (vlib_main_t * vm, unformat_input_t * input,
171 vlib_cli_command_t * cmd)
173 vnet_main_t *vnm = vnet_get_main ();
177 u32 hw_if_index = ~0;
181 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
184 (input, "%U", unformat_vnet_hw_interface, vnm, &hw_if_index))
186 else if (unformat (input, "%U", unformat_ethernet_address, &client_mac))
188 else if (unformat (input, "sub-id %d", &sub_id))
190 else if (unformat (input, "del"))
196 if (hw_if_index == ~0)
197 return clib_error_return (0, "Please specify parent interface ...");
199 return clib_error_return (0, "Please specify client MAC address ...");
200 if (sub_id == ~0 && is_add)
201 return clib_error_return (0, "Please specify sub-interface id ...");
204 rv = p2p_ethernet_add_del (vm, hw_if_index, client_mac, sub_id, is_add, 0);
207 case VNET_API_ERROR_BOND_SLAVE_NOT_ALLOWED:
208 return clib_error_return (0,
209 "not allowed as parent interface belongs to a BondEthernet interface");
211 return clib_error_return (0,
212 "p2p ethernet for given parent interface and client mac already exists");
214 return clib_error_return (0,
215 "couldn't create p2p ethernet subinterface");
217 return clib_error_return (0,
218 "p2p ethernet for given parent interface and client mac doesn't exist");
225 VLIB_CLI_COMMAND (p2p_ethernet_add_del_command, static) =
227 .path = "p2p_ethernet ",.function = vnet_p2p_ethernet_add_del,.short_help =
228 "p2p_ethernet <intfc> <mac-address> [sub-id <id> | del]",};
230 static clib_error_t *
231 p2p_ethernet_init (vlib_main_t * vm)
233 p2p_ethernet_main_t *p2pm = &p2p_main;
235 p2pm->vlib_main = vm;
236 p2pm->vnet_main = vnet_get_main ();
237 p2pm->p2p_ethernet_by_key =
238 hash_create_mem (0, sizeof (p2p_key_t), sizeof (uword));
243 VLIB_INIT_FUNCTION (p2p_ethernet_init);
246 * fd.io coding-style-patch-verification: ON
249 * eval: (c-set-style "gnu")