/* * p2p_ethernet.c: p2p ethernet * * Copyright (c) 2012 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/bihash_16_8.h> #include <vnet/vnet.h> #include <vnet/ethernet/p2p_ethernet.h> #include <vnet/l2/l2_input.h> p2p_ethernet_main_t p2p_main; static void create_p2pe_key (p2p_key_t * p2pe_key, u32 parent_if_index, u8 * client_mac) { clib_memcpy (p2pe_key->mac, client_mac, 6); p2pe_key->pad1 = 0; p2pe_key->hw_if_index = parent_if_index; p2pe_key->pad2 = 0; } u32 p2p_ethernet_lookup (u32 parent_if_index, u8 * client_mac) { p2p_ethernet_main_t *p2pm = &p2p_main; p2p_key_t p2pe_key; uword *p; create_p2pe_key (&p2pe_key, parent_if_index, client_mac); p = hash_get_mem (p2pm->p2p_ethernet_by_key, &p2pe_key); if (p) return p[0]; return ~0; } int p2p_ethernet_add_del (vlib_main_t * vm, u32 parent_if_index, u8 * client_mac, u32 p2pe_subif_id, int is_add, u32 * p2pe_if_index) { vnet_main_t *vnm = vnet_get_main (); p2p_ethernet_main_t *p2pm = &p2p_main; vnet_interface_main_t *im = &vnm->interface_main; u32 p2pe_sw_if_index = ~0; p2pe_sw_if_index = p2p_ethernet_lookup (parent_if_index, client_mac); if (p2pe_if_index) *p2pe_if_index = ~0; if (is_add) { if (p2pe_sw_if_index == ~0) { vnet_hw_interface_t *hi; hi = vnet_get_hw_interface (vnm, parent_if_index); if (hi->bond_info == VNET_HW_INTERFACE_BOND_INFO_SLAVE) return VNET_API_ERROR_BOND_SLAVE_NOT_ALLOWED; u64 sup_and_sub_key = ((u64) (hi->sw_if_index) << 32) | (u64) p2pe_subif_id; uword *p; p = hash_get_mem (im->sw_if_index_by_sup_and_sub, &sup_and_sub_key); if (p) { if (CLIB_DEBUG > 0) clib_warning ("p2p ethernet sub-interface on sw_if_index %d with sub id %d already exists\n", hi->sw_if_index, p2pe_subif_id); return VNET_API_ERROR_SUBIF_ALREADY_EXISTS; } vnet_sw_interface_t template = { .type = VNET_SW_INTERFACE_TYPE_P2P, .flood_class = VNET_FLOOD_CLASS_NORMAL, .sup_sw_if_index = hi->sw_if_index, .sub.id = p2pe_subif_id }; clib_memcpy (template.p2p.client_mac, client_mac, sizeof (template.p2p.client_mac)); if (vnet_create_sw_interface (vnm, &template, &p2pe_sw_if_index)) return VNET_API_ERROR_SUBIF_CREATE_FAILED; /* Allocate counters for this interface. */ { u32 i; vnet_interface_counter_lock (im); for (i = 0; i < vec_len (im->sw_if_counters); i++) { vlib_validate_simple_counter (&im->sw_if_counters[i], p2pe_sw_if_index); vlib_zero_simple_counter (&im->sw_if_counters[i], p2pe_sw_if_index); } for (i = 0; i < vec_len (im->combined_sw_if_counters); i++) { vlib_validate_combined_counter (&im->combined_sw_if_counters [i], p2pe_sw_if_index); vlib_zero_combined_counter (&im->combined_sw_if_counters[i], p2pe_sw_if_index); } vnet_interface_counter_unlock (im); } vnet_interface_main_t *im = &vnm->interface_main; sup_and_sub_key = ((u64) (hi->sw_if_index) << 32) | (u64) p2pe_subif_id; u64 *kp = clib_mem_alloc (sizeof (*kp)); *kp = sup_and_sub_key; hash_set (hi->sub_interface_sw_if_index_by_id, p2pe_subif_id, p2pe_sw_if_index); hash_set_mem (im->sw_if_index_by_sup_and_sub, kp, p2pe_sw_if_index); p2p_key_t *p_p2pe_key; p_p2pe_key = clib_mem_alloc (sizeof (*p_p2pe_key)); create_p2pe_key (p_p2pe_key, parent_if_index, client_mac); hash_set_mem (p2pm->p2p_ethernet_by_key, p_p2pe_key, p2pe_sw_if_index); if (p2pe_if_index) *p2pe_if_index = p2pe_sw_if_index; vec_validate (p2pm->p2p_ethernet_by_sw_if_index, parent_if_index); if (p2pm->p2p_ethernet_by_sw_if_index[parent_if_index] == 0) { vnet_feature_enable_disable ("device-input", "p2p-ethernet-input", parent_if_index, 1, 0, 0); /* Set promiscuous mode on the l2 interface */ ethernet_set_flags (vnm, parent_if_index, ETHERNET_INTERFACE_FLAG_ACCEPT_ALL); } p2pm->p2p_ethernet_by_sw_if_index[parent_if_index]++; /* set the interface mode */ set_int_l2_mode (vm, vnm, MODE_L3, p2pe_subif_id, 0, 0, 0, 0); return 0; } return VNET_API_ERROR_SUBIF_ALREADY_EXISTS; } else { if (p2pe_sw_if_index == ~0) return VNET_API_ERROR_SUBIF_DOESNT_EXIST; else { int rv = 0; rv = vnet_delete_sub_interface (p2pe_sw_if_index); if (!rv) { vec_validate (p2pm->p2p_ethernet_by_sw_if_index, parent_if_index); if (p2pm->p2p_ethernet_by_sw_if_index[parent_if_index] == 1) { vnet_feature_enable_disable ("device-input", "p2p-ethernet-input", parent_if_index, 0, 0, 0); /* Disable promiscuous mode on the l2 interface */ ethernet_set_flags (vnm, parent_if_index, 0); } p2pm->p2p_ethernet_by_sw_if_index[parent_if_index]--; /* Remove p2p_ethernet from hash map */ p2p_key_t *p_p2pe_key; p_p2pe_key = clib_mem_alloc (sizeof (*p_p2pe_key)); create_p2pe_key (p_p2pe_key, parent_if_index, client_mac); hash_unset_mem (p2pm->p2p_ethernet_by_key, p_p2pe_key); } return rv; } } } static clib_error_t * vnet_p2p_ethernet_add_del (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { vnet_main_t *vnm = vnet_get_main (); int is_add = 1; int remote_mac = 0; u32 hw_if_index = ~0; u32 sub_id = ~0; u8 client_mac[6]; while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) { if (unformat (input, "%U", unformat_vnet_hw_interface, vnm, &hw_if_index)) ; else if (unformat (input, "%U", unformat_ethernet_address, &client_mac)) remote_mac = 1; else if (unformat (input, "sub-id %d", &sub_id)) ; else if (unformat (input, "del")) is_add = 0; else break; } if (hw_if_index == ~0) return clib_error_return (0, "Please specify parent interface ..."); if (!remote_mac) return clib_error_return (0, "Please specify client MAC address ..."); if (sub_id == ~0 && is_add) return clib_error_return (0, "Please specify sub-interface id ..."); u32 rv; rv = p2p_ethernet_add_del (vm, hw_if_index, client_mac, sub_id, is_add, 0); switch (rv) { case VNET_API_ERROR_BOND_SLAVE_NOT_ALLOWED: return clib_error_return (0, "not allowed as parent interface belongs to a BondEthernet interface"); case -1: return clib_error_return (0, "p2p ethernet for given parent interface and client mac already exists"); case -2: return clib_error_return (0, "couldn't create p2p ethernet subinterface"); case -3: return clib_error_return (0, "p2p ethernet for given parent interface and client mac doesn't exist"); default: break; } return 0; } VLIB_CLI_COMMAND (p2p_ethernet_add_del_command, static) = { .path = "p2p_ethernet ",.function = vnet_p2p_ethernet_add_del,.short_help = "p2p_ethernet <intfc> <mac-address> [sub-id <id> | del]",}; static clib_error_t * p2p_ethernet_init (vlib_main_t * vm) { p2p_ethernet_main_t *p2pm = &p2p_main; p2pm->vlib_main = vm; p2pm->vnet_main = vnet_get_main (); p2pm->p2p_ethernet_by_key = hash_create_mem (0, sizeof (p2p_key_t), sizeof (uword)); return 0; } VLIB_INIT_FUNCTION (p2p_ethernet_init); /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */