/* *------------------------------------------------------------------ * Copyright (c) 2017 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. *------------------------------------------------------------------ */ #define _GNU_SOURCE #include <stdint.h> #include <net/if.h> #include <sys/types.h> #include <fcntl.h> #include <sys/ioctl.h> #include <sys/socket.h> #include <sys/un.h> #include <sys/uio.h> #include <sys/mman.h> #include <sys/prctl.h> #include <sys/eventfd.h> #include <inttypes.h> #include <limits.h> #include <vlib/vlib.h> #include <vlib/unix/unix.h> #include <vppinfra/linux/syscall.h> #include <vnet/plugin/plugin.h> #include <vnet/ethernet/ethernet.h> #include <vpp/app/version.h> #include <memif/memif.h> #include <memif/private.h> memif_main_t memif_main; static u32 memif_eth_flag_change (vnet_main_t * vnm, vnet_hw_interface_t * hi, u32 flags) { /* nothing for now */ return 0; } static void memif_queue_intfd_close (memif_queue_t * mq) { if (mq->int_clib_file_index != ~0) { memif_file_del_by_index (mq->int_clib_file_index); mq->int_clib_file_index = ~0; mq->int_fd = -1; } else if (mq->int_fd > -1) { close (mq->int_fd); mq->int_fd = -1; } } void memif_disconnect (memif_if_t * mif, clib_error_t * err) { memif_main_t *mm = &memif_main; vnet_main_t *vnm = vnet_get_main (); memif_region_t *mr; memif_queue_t *mq; int i; if (mif == 0) return; DBG ("disconnect %u (%v)", mif->dev_instance, err ? err->what : 0); if (err) { clib_error_t *e = 0; mif->local_disc_string = vec_dup (err->what); if (mif->sock && clib_socket_is_connected (mif->sock)) e = memif_msg_send_disconnect (mif, err); clib_error_free (e); } /* set interface down */ mif->flags &= ~(MEMIF_IF_FLAG_CONNECTED | MEMIF_IF_FLAG_CONNECTING); if (mif->hw_if_index != ~0) vnet_hw_interface_set_flags (vnm, mif->hw_if_index, 0); /* close connection socket */ if (mif->sock && mif->sock->fd) { memif_socket_file_t *msf = vec_elt_at_index (mm->socket_files, mif->socket_file_index); hash_unset (msf->dev_instance_by_fd, mif->sock->fd); memif_socket_close (&mif->sock); } else if (mif->sock) { clib_error_t *err; err = clib_socket_close (mif->sock); if (err) clib_error_report (err); clib_mem_free (mif->sock); } vec_foreach_index (i, mif->rx_queues) { mq = vec_elt_at_index (mif->rx_queues, i); if (mq->ring) { int rv; rv = vnet_hw_interface_unassign_rx_thread (vnm, mif->hw_if_index, i); if (rv) DBG ("Warning: unable to unassign interface %d, " "queue %d: rc=%d", mif->hw_if_index, i, rv); mq->ring = 0; } } /* free tx and rx queues */ vec_foreach (mq, mif->rx_queues) memif_queue_intfd_close (mq); vec_free (mif->rx_queues); vec_foreach (mq, mif->tx_queues) memif_queue_intfd_close (mq); vec_free (mif->tx_queues); /* free memory regions */ vec_foreach (mr, mif->regions) { int rv; if ((rv = munmap (mr->shm, mr->region_size))) clib_warning ("munmap failed, rv = %d", rv); if (mr->fd > -1) close (mr->fd); } vec_free (mif->regions); vec_free (mif->remote_name); vec_free (mif->remote_if_name); clib_fifo_free (mif->msg_queue); } static clib_error_t * memif_int_fd_read_ready (clib_file_t * uf) { memif_main_t *mm = &memif_main; vnet_main_t *vnm = vnet_get_main (); u16 qid = uf->private_data & 0xFFFF; memif_if_t *mif = vec_elt_at_index (mm->interfaces, uf->private_data >> 16); memif_queue_t *mq = vec_elt_at_index (mif->rx_queues, qid); u64 b; ssize_t size; size = read (uf->file_descriptor, &b, sizeof (b)); if (size < 0) { DBG_UNIX_LOG ("Failed to read from socket"); return 0; } vnet_device_input_set_interrupt_pending (vnm, mif->hw_if_index, qid); mq->int_count++; return 0; } clib_error_t * memif_connect (memif_if_t * mif) { vnet_main_t *vnm = vnet_get_main (); clib_file_t template = { 0 }; memif_region_t *mr; int i; DBG ("connect %u", mif->dev_instance); vec_free (mif->local_disc_string); vec_free (mif->remote_disc_string); vec_foreach (mr, mif->regions) { if (mr->shm) continue; if (mr->fd < 0) clib_error_return (0, "no memory region fd"); if ((mr->shm = mmap (NULL, mr->region_size, PROT_READ | PROT_WRITE, MAP_SHARED, mr->fd, 0)) == MAP_FAILED) return clib_error_return_unix (0, "mmap"); } template.read_function = memif_int_fd_read_ready; vec_foreach_index (i, mif->tx_queues) { memif_queue_t *mq = vec_elt_at_index (mif->tx_queues, i); mq->ring = mif->regions[mq->region].shm + mq->offset; if (mq->ring->cookie != MEMIF_COOKIE) return clib_error_return (0, "wrong cookie on tx ring %u", i); } vec_foreach_index (i, mif->rx_queues) { memif_queue_t *mq = vec_elt_at_index (mif->rx_queues, i); int rv; mq->ring = mif->regions[mq->region].shm + mq->offset; if (mq->ring->cookie != MEMIF_COOKIE) return clib_error_return (0, "wrong cookie on tx ring %u", i); if (mq->int_fd > -1) { template.file_descriptor = mq->int_fd; template.private_data = (mif->dev_instance << 16) | (i & 0xFFFF); template.description = format (0, "%U rx %u int", format_memif_device_name, mif->dev_instance, i); memif_file_add (&mq->int_clib_file_index, &template); } vnet_hw_interface_assign_rx_thread (vnm, mif->hw_if_index, i, ~0); rv = vnet_hw_interface_set_rx_mode (vnm, mif->hw_if_index, i, VNET_HW_INTERFACE_RX_MODE_DEFAULT); if (rv) clib_warning ("Warning: unable to set rx mode for interface %d queue %d: " "rc=%d", mif->hw_if_index, i, rv); else { vnet_hw_interface_rx_mode rxmode; vnet_hw_interface_get_rx_mode (vnm, mif->hw_if_index, i, &rxmode); if (rxmode == VNET_HW_INTERFACE_RX_MODE_POLLING) mq->ring->flags |= MEMIF_RING_FLAG_MASK_INT; } } mif->flags &= ~MEMIF_IF_FLAG_CONNECTING; mif->flags |= MEMIF_IF_FLAG_CONNECTED; vnet_hw_interface_set_flags (vnm, mif->hw_if_index, VNET_HW_INTERFACE_FLAG_LINK_UP); return 0; } static_always_inline memif_ring_t * memif_get_ring (memif_if_t * mif, memif_ring_type_t type, u16 ring_num) { if (vec_len (mif->regions) == 0) return NULL; void *p = mif->regions[0].shm; int ring_size = sizeof (memif_ring_t) + sizeof (memif_desc_t) * (1 << mif->run.log2_ring_size); p += (ring_num + type * mif->run.num_s2m_rings) * ring_size; return (memif_ring_t *) p; } clib_error_t * memif_init_regions_and_queues (memif_if_t * mif) { memif_ring_t *ring = NULL; int i, j; u64 buffer_offset; memif_region_t *r; clib_mem_vm_alloc_t alloc = { 0 }; clib_error_t *err; vec_validate_aligned (mif->regions, 0, CLIB_CACHE_LINE_BYTES); r = vec_elt_at_index (mif->regions, 0); buffer_offset = (mif->run.num_s2m_rings + mif->run.num_m2s_rings) * (sizeof (memif_ring_t) + sizeof (memif_desc_t) * (1 << mif->run.log2_ring_size)); r->region_size = buffer_offset + mif->run.buffer_size * (1 << mif->run.log2_ring_size) * (mif->run.num_s2m_rings + mif->run.num_m2s_rings); alloc.name = "memif region"; alloc.size = r->region_size; alloc.flags = CLIB_MEM_VM_F_SHARED; err = clib_mem_vm_ext_alloc (&alloc); if (err) return err; r->fd = alloc.fd; r->shm = alloc.addr; for (i = 0; i < mif->run.num_s2m_rings; i++) { ring = memif_get_ring (mif, MEMIF_RING_S2M, i); ring->head = ring->tail = 0; ring->cookie = MEMIF_COOKIE; for (j = 0; j < (1 << mif->run.log2_ring_size); j++) { u16 slot = i * (1 << mif->run.log2_ring_size) + j; ring->desc[j].region = 0; ring->desc[j].offset = buffer_offset + (u32) (slot * mif->run.buffer_size); ring->desc[j].buffer_length = mif->run.buffer_size; } } for (i = 0; i < mif->run.num_m2s_rings; i++) { ring = memif_get_ring (mif, MEMIF_RING_M2S, i); ring->head = ring->tail = 0; ring->cookie = MEMIF_COOKIE; for (j = 0; j < (1 << mif->run.log2_ring_size); j++) { u16 slot = (i + mif->run.num_s2m_rings) * (1 << mif->run.log2_ring_size) + j; ring->desc[j].region = 0; ring->desc[j].offset = buffer_offset + (u32) (slot * mif->run.buffer_size); ring->desc[j].buffer_length = mif->run.buffer_size; } } ASSERT (mif->tx_queues == 0); vec_validate_aligned (mif->tx_queues, mif->run.num_s2m_rings - 1, CLIB_CACHE_LINE_BYTES); vec_foreach_index (i, mif->tx_queues) { memif_queue_t *mq = vec_elt_at_index (mif->tx_queues, i); if ((mq->int_fd = eventfd (0, EFD_NONBLOCK)) < 0) return clib_error_return_unix (0, "eventfd[tx queue %u]", i); mq->int_clib_file_index = ~0; mq->ring = memif_get_ring (mif, MEMIF_RING_S2M, i); mq->log2_ring_size = mif->cfg.log2_ring_size; mq->region = 0; mq->offset = (void *) mq->ring - (void *) mif->regions[mq->region].shm; mq->last_head = 0; mq->type = MEMIF_RING_S2M; } ASSERT (mif->rx_queues == 0); vec_validate_aligned (mif->rx_queues, mif->run.num_m2s_rings - 1, CLIB_CACHE_LINE_BYTES); vec_foreach_index (i, mif->rx_queues) { memif_queue_t *mq = vec_elt_at_index (mif->rx_queues, i); if ((mq->int_fd = eventfd (0, EFD_NONBLOCK)) < 0) return clib_error_return_unix (0, "eventfd[rx queue %u]", i); mq->int_clib_file_index = ~0; mq->ring = memif_get_ring (mif, MEMIF_RING_M2S, i); mq->log2_ring_size = mif->cfg.log2_ring_size; mq->region = 0; mq->offset = (void *) mq->ring - (void *) mif->regions[mq->region].shm; mq->last_head = 0; mq->type = MEMIF_RING_M2S; } return 0; } static uword memif_process (vlib_main_t * vm, vlib_node_runtime_t * rt, vlib_frame_t * f) { memif_main_t *mm = &memif_main; memif_if_t *mif; clib_socket_t *sock; uword *event_data = 0, event_type; u8 enabled = 0; f64 start_time, last_run_duration = 0, now; clib_error_t *err; sock = clib_mem_alloc (sizeof (clib_socket_t)); memset (sock, 0, sizeof (clib_socket_t)); while (1) { if (enabled) vlib_process_wait_for_event_or_clock (vm, (f64) 3 - last_run_duration); else vlib_process_wait_for_event (vm); event_type = vlib_process_get_events (vm, &event_data); vec_reset_length (event_data); switch (event_type) { case ~0: break; case MEMIF_PROCESS_EVENT_START: enabled = 1; break; case MEMIF_PROCESS_EVENT_STOP: enabled = 0; continue; default: ASSERT (0); } last_run_duration = start_time = vlib_time_now (vm); /* *INDENT-OFF* */ pool_foreach (mif, mm->interfaces, ({ memif_socket_file_t * msf = vec_elt_at_index (mm->socket_files, mif->socket_file_index); /* Allow no more than 10us without a pause */ now = vlib_time_now (vm); if (now > start_time + 10e-6) { vlib_process_suspend (vm, 100e-6); /* suspend for 100 us */ start_time = vlib_time_now (vm); } if ((mif->flags & MEMIF_IF_FLAG_ADMIN_UP) == 0) continue; if (mif->flags & MEMIF_IF_FLAG_CONNECTING) continue; if (mif->flags & MEMIF_IF_FLAG_CONNECTED) continue; if (mif->flags & MEMIF_IF_FLAG_IS_SLAVE) { memset (sock, 0, sizeof(clib_socket_t)); sock->config = (char *) msf->filename; sock->flags = CLIB_SOCKET_F_IS_CLIENT| CLIB_SOCKET_F_SEQPACKET; if ((err = clib_socket_init (sock))) { clib_error_free (err); } else { clib_file_t t = { 0 }; t.read_function = memif_slave_conn_fd_read_ready; t.write_function = memif_slave_conn_fd_write_ready; t.error_function = memif_slave_conn_fd_error; t.file_descriptor = sock->fd; t.private_data = mif->dev_instance; memif_file_add (&sock->private_data, &t); t.description = format (0, "%U ctl", format_memif_device_name, mif->dev_instance); hash_set (msf->dev_instance_by_fd, sock->fd, mif->dev_instance); mif->flags |= MEMIF_IF_FLAG_CONNECTING; mif->sock = sock; sock = clib_mem_alloc (sizeof(clib_socket_t)); } } })); /* *INDENT-ON* */ last_run_duration = vlib_time_now (vm) - last_run_duration; } return 0; } /* *INDENT-OFF* */ VLIB_REGISTER_NODE (memif_process_node,static) = { .function = memif_process, .type = VLIB_NODE_TYPE_PROCESS, .name = "memif-process", }; /* *INDENT-ON* */ static int memif_add_socket_file (u32 sock_id, u8 * socket_filename) { memif_main_t *mm = &memif_main; uword *p; memif_socket_file_t *msf; p = hash_get (mm->socket_file_index_by_sock_id, sock_id); if (p) { msf = pool_elt_at_index (mm->socket_files, *p); if (strcmp ((char *) msf->filename, (char *) socket_filename) == 0) { /* Silently accept identical "add". */ return 0; } /* But don't allow a direct add of a different filename. */ return VNET_API_ERROR_ENTRY_ALREADY_EXISTS; } DBG ("creating socket file (uninitialized) %s", msf->filename); pool_get (mm->socket_files, msf); memset (msf, 0, sizeof (memif_socket_file_t)); msf->filename = socket_filename; msf->socket_id = sock_id; hash_set (mm->socket_file_index_by_sock_id, sock_id, msf - mm->socket_files); return 0; } static int memif_delete_socket_file (u32 sock_id) { memif_main_t *mm = &memif_main; uword *p; memif_socket_file_t *msf; p = hash_get (mm->socket_file_index_by_sock_id, sock_id); if (!p) { /* Don't delete non-existent entries. */ return VNET_API_ERROR_INVALID_ARGUMENT; } msf = pool_elt_at_index (mm->socket_files, *p); if (msf->ref_cnt > 0) { return VNET_API_ERROR_UNEXPECTED_INTF_STATE; } vec_free (msf->filename); pool_put (mm->socket_files, msf); hash_unset (mm->socket_file_index_by_sock_id, sock_id); return 0; } int memif_socket_filename_add_del (u8 is_add, u32 sock_id, u8 * sock_filename) { if (sock_id == 0 || sock_id == ~0) { return VNET_API_ERROR_INVALID_ARGUMENT; } if (is_add == 0) { return memif_delete_socket_file (sock_id); } if (sock_filename == 0 || sock_filename[0] == 0) { return VNET_API_ERROR_INVALID_ARGUMENT; } if (sock_filename[0] != '/') { clib_error_t *error; error = vlib_unix_recursive_mkdir (vlib_unix_get_runtime_dir ()); if (error) { clib_error_free (error); return VNET_API_ERROR_SYSCALL_ERROR_1; } sock_filename = format (0, "%s/%s%c", vlib_unix_get_runtime_dir (), sock_filename, 0); } else { sock_filename = vec_dup (sock_filename); } return memif_add_socket_file (sock_id, sock_filename); } int memif_delete_if (vlib_main_t * vm, memif_if_t * mif) { vnet_main_t *vnm = vnet_get_main (); memif_main_t *mm = &memif_main; memif_socket_file_t *msf = vec_elt_at_index (mm->socket_files, mif->socket_file_index); clib_error_t *err; mif->flags |= MEMIF_IF_FLAG_DELETING; vec_free (mif->local_disc_string); vec_free (mif->remote_disc_string); /* bring down the interface */ vnet_hw_interface_set_flags (vnm, mif->hw_if_index, 0); vnet_sw_interface_set_flags (vnm, mif->sw_if_index, 0); err = clib_error_return (0, "interface deleted"); memif_disconnect (mif, err); clib_error_free (err); if (mif->hw_if_index != ~0) { /* remove the interface */ if (mif->mode == MEMIF_INTERFACE_MODE_IP) vnet_delete_hw_interface (vnm, mif->hw_if_index); else ethernet_delete_interface (vnm, mif->hw_if_index); mif->hw_if_index = ~0; } /* free interface data structures */ clib_spinlock_free (&mif->lockp); mhash_unset (&msf->dev_instance_by_id, &mif->id, 0); /* remove socket file */ if (--(msf->ref_cnt) == 0) { if (msf->is_listener) { int i; vec_foreach_index (i, msf->pending_clients) { memif_socket_close (msf->pending_clients + i); } memif_socket_close (&msf->sock); vec_free (msf->pending_clients); } mhash_free (&msf->dev_instance_by_id); hash_free (msf->dev_instance_by_fd); if (msf->sock) { err = clib_socket_close (msf->sock); if (err) clib_error_report (err); clib_mem_free (msf->sock); } } memset (mif, 0, sizeof (*mif)); pool_put (mm->interfaces, mif); if (pool_elts (mm->interfaces) == 0) vlib_process_signal_event (vm, memif_process_node.index, MEMIF_PROCESS_EVENT_STOP, 0); return 0; } /* *INDENT-OFF* */ VNET_HW_INTERFACE_CLASS (memif_ip_hw_if_class, static) = { .name = "memif-ip", .flags = VNET_HW_INTERFACE_CLASS_FLAG_P2P, }; /* *INDENT-ON* */ int memif_create_if (vlib_main_t * vm, memif_create_if_args_t * args) { memif_main_t *mm = &memif_main; vlib_thread_main_t *tm = vlib_get_thread_main (); vnet_main_t *vnm = vnet_get_main (); memif_if_t *mif = 0; vnet_sw_interface_t *sw; clib_error_t *error = 0; int ret = 0; uword *p; vnet_hw_interface_t *hw; memif_socket_file_t *msf = 0; int rv = 0; p = hash_get (mm->socket_file_index_by_sock_id, args->socket_id); if (p == 0) { rv = VNET_API_ERROR_INVALID_ARGUMENT; goto done; } msf = vec_elt_at_index (mm->socket_files, p[0]); /* existing socket file can be either master or slave but cannot be both */ if (msf->ref_cnt > 0) { if ((!msf->is_listener != !args->is_master)) { rv = VNET_API_ERROR_SUBIF_ALREADY_EXISTS; goto done; } p = mhash_get (&msf->dev_instance_by_id, &args->id); if (p) { rv = VNET_API_ERROR_SUBIF_ALREADY_EXISTS; goto done; } } /* Create new socket file */ if (msf->ref_cnt == 0) { struct stat file_stat; /* If we are creating listener make sure file doesn't exist or if it * exists thn delete it if it is old socket file */ if (args->is_master && (stat ((char *) msf->filename, &file_stat) == 0)) { if (S_ISSOCK (file_stat.st_mode)) { unlink ((char *) msf->filename); } else { error = clib_error_return (0, "File exists for %s", msf->filename); clib_error_report (error); rv = VNET_API_ERROR_VALUE_EXIST; goto done; } } mhash_init (&msf->dev_instance_by_id, sizeof (uword), sizeof (memif_interface_id_t)); msf->dev_instance_by_fd = hash_create (0, sizeof (uword)); msf->is_listener = (args->is_master != 0); DBG ("initializing socket file %s", msf->filename); } pool_get (mm->interfaces, mif); memset (mif, 0, sizeof (*mif)); mif->dev_instance = mif - mm->interfaces; mif->socket_file_index = msf - mm->socket_files; mif->id = args->id; mif->sw_if_index = mif->hw_if_index = mif->per_interface_next_index = ~0; mif->mode = args->mode; if (args->secret) mif->secret = vec_dup (args->secret); if (tm->n_vlib_mains > 1) clib_spinlock_init (&mif->lockp); if (mif->mode == MEMIF_INTERFACE_MODE_ETHERNET) { if (!args->hw_addr_set) { f64 now = vlib_time_now (vm); u32 rnd; rnd = (u32) (now * 1e6); rnd = random_u32 (&rnd); memcpy (args->hw_addr + 2, &rnd, sizeof (rnd)); args->hw_addr[0] = 2; args->hw_addr[1] = 0xfe; } error = ethernet_register_interface (vnm, memif_device_class.index, mif->dev_instance, args->hw_addr, &mif->hw_if_index, memif_eth_flag_change); } else if (mif->mode == MEMIF_INTERFACE_MODE_IP) { mif->hw_if_index = vnet_register_interface (vnm, memif_device_class.index, mif->dev_instance, memif_ip_hw_if_class.index, mif->dev_instance); } else error = clib_error_return (0, "unsupported interface mode"); if (error) { clib_error_report (error); ret = VNET_API_ERROR_SYSCALL_ERROR_2; goto error; } sw = vnet_get_hw_sw_interface (vnm, mif->hw_if_index); mif->sw_if_index = sw->sw_if_index; mif->cfg.log2_ring_size = args->log2_ring_size; mif->cfg.buffer_size = args->buffer_size; mif->cfg.num_s2m_rings = args->is_master ? args->rx_queues : args->tx_queues; mif->cfg.num_m2s_rings = args->is_master ? args->tx_queues : args->rx_queues; args->sw_if_index = mif->sw_if_index; /* If this is new one, start listening */ if (msf->is_listener && msf->ref_cnt == 0) { struct stat file_stat; clib_socket_t *s = clib_mem_alloc (sizeof (clib_socket_t)); ASSERT (msf->sock == 0); msf->sock = s; memset (s, 0, sizeof (clib_socket_t)); s->config = (char *) msf->filename; s->flags = CLIB_SOCKET_F_IS_SERVER | CLIB_SOCKET_F_ALLOW_GROUP_WRITE | CLIB_SOCKET_F_SEQPACKET | CLIB_SOCKET_F_PASSCRED; if ((error = clib_socket_init (s))) { clib_error_report (error); ret = VNET_API_ERROR_SYSCALL_ERROR_4; goto error; } if (stat ((char *) msf->filename, &file_stat) == -1) { ret = VNET_API_ERROR_SYSCALL_ERROR_8; goto error; } clib_file_t template = { 0 }; template.read_function = memif_conn_fd_accept_ready; template.file_descriptor = msf->sock->fd; template.private_data = mif->socket_file_index; template.description = format (0, "memif listener %s", msf->filename); memif_file_add (&msf->sock->private_data, &template); } msf->ref_cnt++; if (args->is_master == 0) mif->flags |= MEMIF_IF_FLAG_IS_SLAVE; hw = vnet_get_hw_interface (vnm, mif->hw_if_index); hw->flags |= VNET_HW_INTERFACE_FLAG_SUPPORTS_INT_MODE; vnet_hw_interface_set_input_node (vnm, mif->hw_if_index, memif_input_node.index); mhash_set (&msf->dev_instance_by_id, &mif->id, mif->dev_instance, 0); if (pool_elts (mm->interfaces) == 1) { vlib_process_signal_event (vm, memif_process_node.index, MEMIF_PROCESS_EVENT_START, 0); } goto done; error: if (mif->hw_if_index != ~0) { if (mif->mode == MEMIF_INTERFACE_MODE_IP) vnet_delete_hw_interface (vnm, mif->hw_if_index); else ethernet_delete_interface (vnm, mif->hw_if_index); mif->hw_if_index = ~0; } memif_delete_if (vm, mif); return ret; done: return rv; } static clib_error_t * memif_init (vlib_main_t * vm) { memif_main_t *mm = &memif_main; vlib_thread_main_t *tm = vlib_get_thread_main (); u8 *filename; memset (mm, 0, sizeof (memif_main_t)); /* initialize binary API */ memif_plugin_api_hookup (vm); /* * Pre-stuff socket filename pool with a non-modifieable mapping * for socket-id 0 to MEMIF_DEFAULT_SOCKET_FILENAME in the * default run-time directory. */ filename = format (0, "%s/%s%c", vlib_unix_get_runtime_dir (), MEMIF_DEFAULT_SOCKET_FILENAME, 0); memif_add_socket_file (0, filename); vec_validate_aligned (mm->rx_buffers, tm->n_vlib_mains - 1, CLIB_CACHE_LINE_BYTES); return 0; } VLIB_INIT_FUNCTION (memif_init); /* *INDENT-OFF* */ VLIB_PLUGIN_REGISTER () = { .version = VPP_BUILD_VER, .description = "Packet Memory Interface (experimetal)", }; /* *INDENT-ON* */ /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */