Line data Source code
1 : /*
2 : * p2p_ethernet.c: p2p ethernet
3 : *
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:
8 : *
9 : * http://www.apache.org/licenses/LICENSE-2.0
10 : *
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.
16 : */
17 :
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>
22 :
23 : p2p_ethernet_main_t p2p_main;
24 :
25 : static void
26 4204 : create_p2pe_key (p2p_key_t * p2pe_key, u32 parent_if_index, u8 * client_mac)
27 : {
28 4204 : clib_memcpy (p2pe_key->mac, client_mac, 6);
29 4204 : p2pe_key->pad1 = 0;
30 4204 : p2pe_key->hw_if_index = parent_if_index;
31 4204 : p2pe_key->pad2 = 0;
32 4204 : }
33 :
34 : u32
35 3160 : p2p_ethernet_lookup (u32 parent_if_index, u8 * client_mac)
36 : {
37 3160 : p2p_ethernet_main_t *p2pm = &p2p_main;
38 : p2p_key_t p2pe_key;
39 : uword *p;
40 :
41 3160 : create_p2pe_key (&p2pe_key, parent_if_index, client_mac);
42 3160 : p = hash_get_mem (p2pm->p2p_ethernet_by_key, &p2pe_key);
43 3160 : if (p)
44 1107 : return p[0];
45 :
46 2053 : return ~0;
47 : }
48 :
49 : int
50 1044 : p2p_ethernet_add_del (vlib_main_t * vm, u32 parent_if_index,
51 : u8 * client_mac, u32 p2pe_subif_id, int is_add,
52 : u32 * p2pe_if_index)
53 : {
54 1044 : vnet_main_t *vnm = vnet_get_main ();
55 1044 : p2p_ethernet_main_t *p2pm = &p2p_main;
56 1044 : vnet_interface_main_t *im = &vnm->interface_main;
57 :
58 1044 : u32 p2pe_sw_if_index = ~0;
59 1044 : p2pe_sw_if_index = p2p_ethernet_lookup (parent_if_index, client_mac);
60 :
61 1044 : if (p2pe_if_index)
62 1023 : *p2pe_if_index = ~0;
63 :
64 1044 : if (is_add)
65 : {
66 1023 : if (p2pe_sw_if_index == ~0)
67 : {
68 : vnet_hw_interface_t *hi;
69 :
70 1023 : hi = vnet_get_hw_interface (vnm, parent_if_index);
71 1023 : if (hi->bond_info == VNET_HW_INTERFACE_BOND_INFO_SLAVE)
72 0 : return VNET_API_ERROR_BOND_SLAVE_NOT_ALLOWED;
73 :
74 1023 : u64 sup_and_sub_key =
75 1023 : ((u64) (hi->sw_if_index) << 32) | (u64) p2pe_subif_id;
76 : uword *p;
77 1023 : p = hash_get_mem (im->sw_if_index_by_sup_and_sub, &sup_and_sub_key);
78 1023 : if (p)
79 : {
80 : if (CLIB_DEBUG > 0)
81 0 : clib_warning
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 0 : return VNET_API_ERROR_SUBIF_ALREADY_EXISTS;
85 : }
86 1023 : vnet_sw_interface_t template = {
87 : .type = VNET_SW_INTERFACE_TYPE_P2P,
88 : .flood_class = VNET_FLOOD_CLASS_NORMAL,
89 1023 : .sup_sw_if_index = hi->sw_if_index,
90 : .sub.id = p2pe_subif_id
91 : };
92 :
93 1023 : clib_memcpy (template.p2p.client_mac, client_mac,
94 : sizeof (template.p2p.client_mac));
95 :
96 1023 : if (vnet_create_sw_interface (vnm, &template, &p2pe_sw_if_index))
97 0 : return VNET_API_ERROR_SUBIF_CREATE_FAILED;
98 :
99 : /* Allocate counters for this interface. */
100 : {
101 : u32 i;
102 :
103 1023 : vnet_interface_counter_lock (im);
104 :
105 10230 : for (i = 0; i < vec_len (im->sw_if_counters); i++)
106 : {
107 9207 : vlib_validate_simple_counter (&im->sw_if_counters[i],
108 : p2pe_sw_if_index);
109 9207 : vlib_zero_simple_counter (&im->sw_if_counters[i],
110 : p2pe_sw_if_index);
111 : }
112 :
113 9207 : for (i = 0; i < vec_len (im->combined_sw_if_counters); i++)
114 : {
115 8184 : vlib_validate_combined_counter (&im->combined_sw_if_counters
116 8184 : [i], p2pe_sw_if_index);
117 8184 : vlib_zero_combined_counter (&im->combined_sw_if_counters[i],
118 : p2pe_sw_if_index);
119 : }
120 :
121 1023 : vnet_interface_counter_unlock (im);
122 : }
123 :
124 1023 : vnet_interface_main_t *im = &vnm->interface_main;
125 1023 : sup_and_sub_key =
126 1023 : ((u64) (hi->sw_if_index) << 32) | (u64) p2pe_subif_id;
127 1023 : u64 *kp = clib_mem_alloc (sizeof (*kp));
128 :
129 1023 : *kp = sup_and_sub_key;
130 1023 : hash_set (hi->sub_interface_sw_if_index_by_id, p2pe_subif_id,
131 : p2pe_sw_if_index);
132 2046 : hash_set_mem (im->sw_if_index_by_sup_and_sub, kp, p2pe_sw_if_index);
133 :
134 : p2p_key_t *p_p2pe_key;
135 1023 : p_p2pe_key = clib_mem_alloc (sizeof (*p_p2pe_key));
136 1023 : create_p2pe_key (p_p2pe_key, parent_if_index, client_mac);
137 2046 : hash_set_mem (p2pm->p2p_ethernet_by_key, p_p2pe_key,
138 : p2pe_sw_if_index);
139 :
140 1023 : if (p2pe_if_index)
141 1023 : *p2pe_if_index = p2pe_sw_if_index;
142 :
143 1023 : vec_validate (p2pm->p2p_ethernet_by_sw_if_index, parent_if_index);
144 1023 : if (p2pm->p2p_ethernet_by_sw_if_index[parent_if_index] == 0)
145 : {
146 12 : vnet_feature_enable_disable ("device-input",
147 : "p2p-ethernet-input",
148 : parent_if_index, 1, 0, 0);
149 : /* Set promiscuous mode on the l2 interface */
150 12 : ethernet_set_flags (vnm, parent_if_index,
151 : ETHERNET_INTERFACE_FLAG_ACCEPT_ALL);
152 :
153 : }
154 1023 : p2pm->p2p_ethernet_by_sw_if_index[parent_if_index]++;
155 : /* set the interface mode */
156 1023 : set_int_l2_mode (vm, vnm, MODE_L3, p2pe_sw_if_index, 0,
157 : L2_BD_PORT_TYPE_NORMAL, 0, 0);
158 1023 : return 0;
159 : }
160 0 : return VNET_API_ERROR_SUBIF_ALREADY_EXISTS;
161 : }
162 : else
163 : {
164 21 : if (p2pe_sw_if_index == ~0)
165 0 : return VNET_API_ERROR_SUBIF_DOESNT_EXIST;
166 : else
167 : {
168 21 : int rv = 0;
169 21 : rv = vnet_delete_sub_interface (p2pe_sw_if_index);
170 21 : if (!rv)
171 : {
172 21 : vec_validate (p2pm->p2p_ethernet_by_sw_if_index,
173 : parent_if_index);
174 21 : if (p2pm->p2p_ethernet_by_sw_if_index[parent_if_index] == 1)
175 : {
176 10 : vnet_feature_enable_disable ("device-input",
177 : "p2p-ethernet-input",
178 : parent_if_index, 0, 0, 0);
179 : /* Disable promiscuous mode on the l2 interface */
180 10 : ethernet_set_flags (vnm, parent_if_index, 0);
181 : }
182 21 : p2pm->p2p_ethernet_by_sw_if_index[parent_if_index]--;
183 :
184 : /* Remove p2p_ethernet from hash map */
185 : p2p_key_t *p_p2pe_key;
186 21 : p_p2pe_key = clib_mem_alloc (sizeof (*p_p2pe_key));
187 21 : create_p2pe_key (p_p2pe_key, parent_if_index, client_mac);
188 21 : hash_unset_mem (p2pm->p2p_ethernet_by_key, p_p2pe_key);
189 : }
190 21 : return rv;
191 : }
192 : }
193 : }
194 :
195 : static clib_error_t *
196 0 : vnet_p2p_ethernet_add_del (vlib_main_t * vm, unformat_input_t * input,
197 : vlib_cli_command_t * cmd)
198 : {
199 0 : vnet_main_t *vnm = vnet_get_main ();
200 :
201 0 : int is_add = 1;
202 0 : int remote_mac = 0;
203 0 : u32 hw_if_index = ~0;
204 0 : u32 sub_id = ~0;
205 : u8 client_mac[6];
206 :
207 0 : while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
208 : {
209 0 : if (unformat
210 : (input, "%U", unformat_vnet_hw_interface, vnm, &hw_if_index))
211 : ;
212 0 : else if (unformat (input, "%U", unformat_ethernet_address, &client_mac))
213 0 : remote_mac = 1;
214 0 : else if (unformat (input, "sub-id %d", &sub_id))
215 : ;
216 0 : else if (unformat (input, "del"))
217 0 : is_add = 0;
218 : else
219 0 : break;
220 : }
221 :
222 0 : if (hw_if_index == ~0)
223 0 : return clib_error_return (0, "Please specify parent interface ...");
224 0 : if (!remote_mac)
225 0 : return clib_error_return (0, "Please specify client MAC address ...");
226 0 : if (sub_id == ~0 && is_add)
227 0 : return clib_error_return (0, "Please specify sub-interface id ...");
228 :
229 : u32 rv;
230 0 : rv = p2p_ethernet_add_del (vm, hw_if_index, client_mac, sub_id, is_add, 0);
231 0 : switch (rv)
232 : {
233 0 : case VNET_API_ERROR_BOND_SLAVE_NOT_ALLOWED:
234 0 : return clib_error_return (0,
235 : "not allowed as parent interface belongs to a BondEthernet interface");
236 0 : case -1:
237 0 : return clib_error_return (0,
238 : "p2p ethernet for given parent interface and client mac already exists");
239 0 : case -2:
240 0 : return clib_error_return (0,
241 : "couldn't create p2p ethernet subinterface");
242 0 : case -3:
243 0 : return clib_error_return (0,
244 : "p2p ethernet for given parent interface and client mac doesn't exist");
245 0 : default:
246 0 : break;
247 : }
248 0 : return 0;
249 : }
250 :
251 272887 : VLIB_CLI_COMMAND (p2p_ethernet_add_del_command, static) = {
252 : .path = "p2p_ethernet",
253 : .function = vnet_p2p_ethernet_add_del,
254 : .short_help = "p2p_ethernet <intfc> <mac-address> [sub-id <id>|del]",
255 : };
256 :
257 : static clib_error_t *
258 559 : p2p_ethernet_init (vlib_main_t * vm)
259 : {
260 559 : p2p_ethernet_main_t *p2pm = &p2p_main;
261 :
262 559 : p2pm->vlib_main = vm;
263 559 : p2pm->vnet_main = vnet_get_main ();
264 559 : p2pm->p2p_ethernet_by_key =
265 559 : hash_create_mem (0, sizeof (p2p_key_t), sizeof (uword));
266 :
267 559 : return 0;
268 : }
269 :
270 13999 : VLIB_INIT_FUNCTION (p2p_ethernet_init);
271 :
272 : /*
273 : * fd.io coding-style-patch-verification: ON
274 : *
275 : * Local Variables:
276 : * eval: (c-set-style "gnu")
277 : * End:
278 : */
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