diff options
Diffstat (limited to 'src/vnet/unix')
| -rw-r--r-- | src/vnet/unix/tap.api | 121 | ||||
| -rw-r--r-- | src/vnet/unix/tap_api.c | 283 | ||||
| -rw-r--r-- | src/vnet/unix/tapcli.c | 1552 | ||||
| -rw-r--r-- | src/vnet/unix/tapcli.h | 62 |
4 files changed, 0 insertions, 2018 deletions
diff --git a/src/vnet/unix/tap.api b/src/vnet/unix/tap.api deleted file mode 100644 index 00a1d08ac25..00000000000 --- a/src/vnet/unix/tap.api +++ /dev/null @@ -1,121 +0,0 @@ -/* - * Copyright (c) 2015-2016 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. - */ - -/** \file - - This file defines vpe control-plane API messages for - the Linux kernel TAP device driver -*/ - -option version = "1.0.0"; - -/** \brief Initialize a new tap interface with the given parameters - @param client_index - opaque cookie to identify the sender - @param context - sender context, to match reply w/ request - @param use_random_mac - let the system generate a unique mac address - @param tap_name - name to associate with the new interface - @param mac_address - mac addr to assign to the interface if use_random not set -*/ -define tap_connect -{ - u32 client_index; - u32 context; - u8 use_random_mac; - u8 tap_name[64]; - u8 mac_address[6]; - u8 renumber; - u32 custom_dev_instance; - u8 ip4_address_set; - u8 ip4_address[4]; - u8 ip4_mask_width; - u8 ip6_address_set; - u8 ip6_address[16]; - u8 ip6_mask_width; - u8 tag[64]; -}; - -/** \brief Reply for tap connect request - @param context - returned sender context, to match reply w/ request - @param retval - return code - @param sw_if_index - software index allocated for the new tap interface -*/ -define tap_connect_reply -{ - u32 context; - i32 retval; - u32 sw_if_index; -}; - -/** \brief Modify a tap interface with the given parameters - @param client_index - opaque cookie to identify the sender - @param context - sender context, to match reply w/ request - @param sw_if_index - interface index of existing tap interface - @param use_random_mac - let the system generate a unique mac address - @param tap_name - name to associate with the new interface - @param mac_address - mac addr to assign to the interface if use_random not set -*/ -define tap_modify -{ - u32 client_index; - u32 context; - u32 sw_if_index; - u8 use_random_mac; - u8 tap_name[64]; - u8 mac_address[6]; - u8 renumber; - u32 custom_dev_instance; -}; - -/** \brief Reply for tap modify request - @param context - returned sender context, to match reply w/ request - @param retval - return code - @param sw_if_index - software index if the modified tap interface -*/ -define tap_modify_reply -{ - u32 context; - i32 retval; - u32 sw_if_index; -}; - -/** \brief Delete tap interface - @param client_index - opaque cookie to identify the sender - @param context - sender context, to match reply w/ request - @param sw_if_index - interface index of existing tap interface -*/ -autoreply define tap_delete -{ - u32 client_index; - u32 context; - u32 sw_if_index; -}; - -/** \brief Dump tap interfaces request */ -define sw_interface_tap_dump -{ - u32 client_index; - u32 context; -}; - -/** \brief Reply for tap dump request - @param sw_if_index - software index of tap interface - @param dev_name - Linux tap device name -*/ -define sw_interface_tap_details -{ - u32 context; - u32 sw_if_index; - u8 dev_name[64]; -}; diff --git a/src/vnet/unix/tap_api.c b/src/vnet/unix/tap_api.c deleted file mode 100644 index 8437c6a270b..00000000000 --- a/src/vnet/unix/tap_api.c +++ /dev/null @@ -1,283 +0,0 @@ -/* - *------------------------------------------------------------------ - * tap_api.c - vnet tap device driver API support - * - * Copyright (c) 2016 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 <vnet/vnet.h> -#include <vlibmemory/api.h> - -#include <vnet/interface.h> -#include <vnet/api_errno.h> -#include <vnet/ethernet/ethernet.h> -#include <vnet/ip/ip.h> -#include <vnet/unix/tuntap.h> -#include <vnet/unix/tapcli.h> - -#include <vnet/vnet_msg_enum.h> - -#define vl_typedefs /* define message structures */ -#include <vnet/vnet_all_api_h.h> -#undef vl_typedefs - -#define vl_endianfun /* define message structures */ -#include <vnet/vnet_all_api_h.h> -#undef vl_endianfun - -/* instantiate all the print functions we know about */ -#define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__) -#define vl_printfun -#include <vnet/vnet_all_api_h.h> -#undef vl_printfun - -#include <vlibapi/api_helper_macros.h> - -#define foreach_tap_api_msg \ -_(TAP_CONNECT, tap_connect) \ -_(TAP_MODIFY, tap_modify) \ -_(TAP_DELETE, tap_delete) \ -_(SW_INTERFACE_TAP_DUMP, sw_interface_tap_dump) - -#define vl_msg_name_crc_list -#include <vnet/unix/tap.api.h> -#undef vl_msg_name_crc_list - -/* - * WARNING: replicated pending api refactor completion - */ -static void -send_sw_interface_event_deleted (vpe_api_main_t * am, - vl_api_registration_t * reg, u32 sw_if_index) -{ - vl_api_sw_interface_event_t *mp; - - mp = vl_msg_api_alloc (sizeof (*mp)); - clib_memset (mp, 0, sizeof (*mp)); - mp->_vl_msg_id = ntohs (VL_API_SW_INTERFACE_EVENT); - mp->sw_if_index = ntohl (sw_if_index); - - mp->admin_up_down = 0; - mp->link_up_down = 0; - mp->deleted = 1; - vl_api_send_msg (reg, (u8 *) mp); -} - -static void -vl_api_tap_connect_t_handler (vl_api_tap_connect_t * mp) -{ - vlib_main_t *vm = vlib_get_main (); - int rv; - vl_api_tap_connect_reply_t *rmp; - vnet_main_t *vnm = vnet_get_main (); - vl_api_registration_t *reg; - u32 sw_if_index = (u32) ~ 0; - u8 *tag; - vnet_tap_connect_args_t _a, *ap = &_a; - - clib_memset (ap, 0, sizeof (*ap)); - - ap->intfc_name = mp->tap_name; - if (!mp->use_random_mac) - ap->hwaddr_arg = mp->mac_address; - ap->renumber = mp->renumber; - ap->sw_if_indexp = &sw_if_index; - ap->custom_dev_instance = ntohl (mp->custom_dev_instance); - if (mp->ip4_address_set) - { - ap->ip4_address = (ip4_address_t *) mp->ip4_address; - ap->ip4_mask_width = mp->ip4_mask_width; - ap->ip4_address_set = 1; - } - if (mp->ip6_address_set) - { - ap->ip6_address = (ip6_address_t *) mp->ip6_address; - ap->ip6_mask_width = mp->ip6_mask_width; - ap->ip6_address_set = 1; - } - - rv = vnet_tap_connect_renumber (vm, ap); - - /* Add tag if supplied */ - if (rv == 0 && mp->tag[0]) - { - mp->tag[ARRAY_LEN (mp->tag) - 1] = 0; - tag = format (0, "%s%c", mp->tag, 0); - vnet_set_sw_interface_tag (vnm, tag, sw_if_index); - } - - reg = vl_api_client_index_to_registration (mp->client_index); - if (!reg) - return; - - rmp = vl_msg_api_alloc (sizeof (*rmp)); - rmp->_vl_msg_id = ntohs (VL_API_TAP_CONNECT_REPLY); - rmp->context = mp->context; - rmp->retval = ntohl (rv); - rmp->sw_if_index = ntohl (sw_if_index); - - vl_api_send_msg (reg, (u8 *) rmp); -} - -static void -vl_api_tap_modify_t_handler (vl_api_tap_modify_t * mp) -{ - int rv; - vl_api_tap_modify_reply_t *rmp; - vl_api_registration_t *reg; - u32 sw_if_index = (u32) ~ 0; - vlib_main_t *vm = vlib_get_main (); - vnet_tap_connect_args_t _a, *ap = &_a; - - clib_memset (ap, 0, sizeof (*ap)); - - ap->orig_sw_if_index = ntohl (mp->sw_if_index); - ap->intfc_name = mp->tap_name; - if (!mp->use_random_mac) - ap->hwaddr_arg = mp->mac_address; - ap->sw_if_indexp = &sw_if_index; - ap->renumber = mp->renumber; - ap->custom_dev_instance = ntohl (mp->custom_dev_instance); - - rv = vnet_tap_modify (vm, ap); - - reg = vl_api_client_index_to_registration (mp->client_index); - if (!reg) - return; - - rmp = vl_msg_api_alloc (sizeof (*rmp)); - rmp->_vl_msg_id = ntohs (VL_API_TAP_MODIFY_REPLY); - rmp->context = mp->context; - rmp->retval = ntohl (rv); - rmp->sw_if_index = ntohl (sw_if_index); - - vl_api_send_msg (reg, (u8 *) rmp); -} - -static void -vl_api_tap_delete_t_handler (vl_api_tap_delete_t * mp) -{ - vlib_main_t *vm = vlib_get_main (); - int rv; - vpe_api_main_t *vam = &vpe_api_main; - vl_api_tap_delete_reply_t *rmp; - vl_api_registration_t *reg; - u32 sw_if_index = ntohl (mp->sw_if_index); - - rv = vnet_tap_delete (vm, sw_if_index); - if (!rv) - { - vnet_main_t *vnm = vnet_get_main (); - vnet_clear_sw_interface_tag (vnm, sw_if_index); - } - - reg = vl_api_client_index_to_registration (mp->client_index); - if (!reg) - return; - - rmp = vl_msg_api_alloc (sizeof (*rmp)); - rmp->_vl_msg_id = ntohs (VL_API_TAP_DELETE_REPLY); - rmp->context = mp->context; - rmp->retval = ntohl (rv); - - vl_api_send_msg (reg, (u8 *) rmp); - - if (!rv) - send_sw_interface_event_deleted (vam, reg, sw_if_index); -} - -static void -send_sw_interface_tap_details (vpe_api_main_t * am, - vl_api_registration_t * reg, - tapcli_interface_details_t * tap_if, - u32 context) -{ - vl_api_sw_interface_tap_details_t *mp; - mp = vl_msg_api_alloc (sizeof (*mp)); - clib_memset (mp, 0, sizeof (*mp)); - mp->_vl_msg_id = ntohs (VL_API_SW_INTERFACE_TAP_DETAILS); - mp->sw_if_index = ntohl (tap_if->sw_if_index); - strncpy ((char *) mp->dev_name, - (char *) tap_if->dev_name, ARRAY_LEN (mp->dev_name) - 1); - mp->context = context; - - vl_api_send_msg (reg, (u8 *) mp); -} - -static void -vl_api_sw_interface_tap_dump_t_handler (vl_api_sw_interface_tap_dump_t * mp) -{ - int rv = 0; - vpe_api_main_t *am = &vpe_api_main; - vl_api_registration_t *reg; - tapcli_interface_details_t *tapifs = NULL; - tapcli_interface_details_t *tap_if = NULL; - - reg = vl_api_client_index_to_registration (mp->client_index); - if (!reg) - return; - - rv = vnet_tap_dump_ifs (&tapifs); - if (rv) - return; - - vec_foreach (tap_if, tapifs) - { - send_sw_interface_tap_details (am, reg, tap_if, mp->context); - } - - vec_free (tapifs); -} - -static void -setup_message_id_table (api_main_t * am) -{ -#define _(id,n,crc) vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id); - foreach_vl_msg_name_crc_tap; -#undef _ -} - -static clib_error_t * -tap_api_hookup (vlib_main_t * vm) -{ - api_main_t *am = &api_main; - -#define _(N,n) \ - vl_msg_api_set_handlers(VL_API_##N, #n, \ - vl_api_##n##_t_handler, \ - vl_noop_handler, \ - vl_api_##n##_t_endian, \ - vl_api_##n##_t_print, \ - sizeof(vl_api_##n##_t), 1); - foreach_tap_api_msg; -#undef _ - - /* - * Set up the (msg_name, crc, message-id) table - */ - setup_message_id_table (am); - - return 0; -} - -VLIB_API_INIT_FUNCTION (tap_api_hookup); - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ diff --git a/src/vnet/unix/tapcli.c b/src/vnet/unix/tapcli.c deleted file mode 100644 index b4df8e84fe4..00000000000 --- a/src/vnet/unix/tapcli.c +++ /dev/null @@ -1,1552 +0,0 @@ -/* - *------------------------------------------------------------------ - * tapcli.c - dynamic tap interface hookup - * - * Copyright (c) 2009 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. - *------------------------------------------------------------------ - */ -/** - * @file - * @brief dynamic tap interface hookup - */ - -#include <fcntl.h> /* for open */ -#include <sys/ioctl.h> -#include <sys/socket.h> -#include <sys/stat.h> -#include <sys/types.h> -#include <sys/uio.h> /* for iovec */ -#include <netinet/in.h> - -#include <linux/if_arp.h> -#include <linux/if_tun.h> - -#include <vlib/vlib.h> -#include <vlib/unix/unix.h> - -#include <vnet/ip/ip.h> - -#include <vnet/ethernet/ethernet.h> - -#include <vnet/feature/feature.h> -#include <vnet/devices/devices.h> -#include <vnet/unix/tuntap.h> -#include <vnet/unix/tapcli.h> - -static vnet_device_class_t tapcli_dev_class; -static vnet_hw_interface_class_t tapcli_interface_class; -static vlib_node_registration_t tapcli_rx_node; - -static void tapcli_nopunt_frame (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * frame); -/** - * @brief Struct for the tapcli interface - */ -typedef struct -{ - u32 unix_fd; - u32 clib_file_index; - u32 provision_fd; - /** For counters */ - u32 sw_if_index; - u32 hw_if_index; - u32 is_promisc; - struct ifreq ifr; - u32 per_interface_next_index; - /** for delete */ - u8 active; -} tapcli_interface_t; - -/** - * @brief Struct for RX trace - */ -typedef struct -{ - u16 sw_if_index; -} tapcli_rx_trace_t; - -/** - * @brief Function to format TAP CLI trace - * - * @param *s - u8 - formatting string - * @param *va - va_list - * - * @return *s - u8 - formatted string - * - */ -u8 * -format_tapcli_rx_trace (u8 * s, va_list * va) -{ - CLIB_UNUSED (vlib_main_t * vm) = va_arg (*va, vlib_main_t *); - CLIB_UNUSED (vlib_node_t * node) = va_arg (*va, vlib_node_t *); - vnet_main_t *vnm = vnet_get_main (); - tapcli_rx_trace_t *t = va_arg (*va, tapcli_rx_trace_t *); - s = format (s, "%U", format_vnet_sw_if_index_name, vnm, t->sw_if_index); - return s; -} - -/** - * @brief TAPCLI per thread struct - */ -typedef struct -{ - /** Vector of VLIB rx buffers to use. We allocate them in blocks - of VLIB_FRAME_SIZE (256). */ - u32 *rx_buffers; - - /** Vector of iovecs for readv/writev calls. */ - struct iovec *iovecs; -} tapcli_per_thread_t; - -/** - * @brief TAPCLI main state struct - */ -typedef struct -{ - /** per thread variables */ - tapcli_per_thread_t *threads; - - /** tap device destination MAC address. Required, or Linux drops pkts */ - u8 ether_dst_mac[6]; - - /** Interface MTU in bytes and # of default sized buffers. */ - u32 mtu_bytes, mtu_buffers; - - /** Vector of tap interfaces */ - tapcli_interface_t *tapcli_interfaces; - - /** Vector of deleted tap interfaces */ - u32 *tapcli_inactive_interfaces; - - /** Bitmap of tap interfaces with pending reads */ - uword *pending_read_bitmap; - - /** Hash table to find tapcli interface given hw_if_index */ - uword *tapcli_interface_index_by_sw_if_index; - - /** Hash table to find tapcli interface given unix fd */ - uword *tapcli_interface_index_by_unix_fd; - - /** renumbering table */ - u32 *show_dev_instance_by_real_dev_instance; - - /** 1 => disable CLI */ - int is_disabled; - - /** convenience - vlib_main_t */ - vlib_main_t *vlib_main; - /** convenience - vnet_main_t */ - vnet_main_t *vnet_main; -} tapcli_main_t; - -static tapcli_main_t tapcli_main; - -/** - * @brief tapcli TX node function - * @node tap-cli-tx - * - * Output node, writes the buffers comprising the incoming frame - * to the tun/tap device, aka hands them to the Linux kernel stack. - * - * @param *vm - vlib_main_t - * @param *node - vlib_node_runtime_t - * @param *frame - vlib_frame_t - * - * @return n_packets - uword - * - */ -static uword -tapcli_tx (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) -{ - u32 *buffers = vlib_frame_vector_args (frame); - uword n_packets = frame->n_vectors; - tapcli_main_t *tm = &tapcli_main; - tapcli_interface_t *ti; - int i; - u16 thread_index = vm->thread_index; - - for (i = 0; i < n_packets; i++) - { - struct iovec *iov; - vlib_buffer_t *b; - uword l; - vnet_hw_interface_t *hw; - uword *p; - u32 tx_sw_if_index; - - b = vlib_get_buffer (vm, buffers[i]); - - tx_sw_if_index = vnet_buffer (b)->sw_if_index[VLIB_TX]; - if (tx_sw_if_index == (u32) ~ 0) - tx_sw_if_index = vnet_buffer (b)->sw_if_index[VLIB_RX]; - - ASSERT (tx_sw_if_index != (u32) ~ 0); - - /* Use the sup intfc to finesse vlan subifs */ - hw = vnet_get_sup_hw_interface (tm->vnet_main, tx_sw_if_index); - tx_sw_if_index = hw->sw_if_index; - - p = hash_get (tm->tapcli_interface_index_by_sw_if_index, - tx_sw_if_index); - if (p == 0) - { - clib_warning ("sw_if_index %d unknown", tx_sw_if_index); - /* $$$ leak, but this should never happen... */ - continue; - } - else - ti = vec_elt_at_index (tm->tapcli_interfaces, p[0]); - - /* Re-set iovecs if present. */ - if (tm->threads[thread_index].iovecs) - _vec_len (tm->threads[thread_index].iovecs) = 0; - - /* VLIB buffer chain -> Unix iovec(s). */ - vec_add2 (tm->threads[thread_index].iovecs, iov, 1); - iov->iov_base = b->data + b->current_data; - iov->iov_len = l = b->current_length; - - if (PREDICT_FALSE (b->flags & VLIB_BUFFER_NEXT_PRESENT)) - { - do - { - b = vlib_get_buffer (vm, b->next_buffer); - - vec_add2 (tm->threads[thread_index].iovecs, iov, 1); - - iov->iov_base = b->data + b->current_data; - iov->iov_len = b->current_length; - l += b->current_length; - } - while (b->flags & VLIB_BUFFER_NEXT_PRESENT); - } - - if (writev (ti->unix_fd, tm->threads[thread_index].iovecs, - vec_len (tm->threads[thread_index].iovecs)) < l) - clib_unix_warning ("writev"); - } - - vlib_buffer_free (vm, vlib_frame_vector_args (frame), frame->n_vectors); - - return n_packets; -} - -/* *INDENT-OFF* */ -VLIB_REGISTER_NODE (tapcli_tx_node,static) = { - .function = tapcli_tx, - .name = "tapcli-tx", - .type = VLIB_NODE_TYPE_INTERNAL, - .vector_size = 4, -}; -/* *INDENT-ON* */ - -/** - * @brief Dispatch tapcli RX node function for node tap_cli_rx - * - * - * @param *vm - vlib_main_t - * @param *node - vlib_node_runtime_t - * @param *ti - tapcli_interface_t - * - * @return n_packets - uword - * - */ -static uword -tapcli_rx_iface (vlib_main_t * vm, - vlib_node_runtime_t * node, tapcli_interface_t * ti) -{ - tapcli_main_t *tm = &tapcli_main; - const uword buffer_size = VLIB_BUFFER_DATA_SIZE; - u32 n_trace = vlib_get_trace_count (vm, node); - u8 set_trace = 0; - u16 thread_index = vm->thread_index; - vnet_main_t *vnm; - vnet_sw_interface_t *si; - u8 admin_down; - u32 next = VNET_DEVICE_INPUT_NEXT_ETHERNET_INPUT; - u32 n_left_to_next, next_index; - u32 *to_next; - - vnm = vnet_get_main (); - si = vnet_get_sw_interface (vnm, ti->sw_if_index); - admin_down = !(si->flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP); - - vlib_get_next_frame (vm, node, next, to_next, n_left_to_next); - - while (n_left_to_next) - { // Fill at most one vector - vlib_buffer_t *b_first, *b, *prev; - u32 bi_first, bi; - word n_bytes_in_packet; - int j, n_bytes_left; - - if (PREDICT_FALSE (vec_len (tm->threads[thread_index].rx_buffers) < - tm->mtu_buffers)) - { - uword len = vec_len (tm->threads[thread_index].rx_buffers); - _vec_len (tm->threads[thread_index].rx_buffers) += - vlib_buffer_alloc (vm, &tm->threads[thread_index].rx_buffers[len], - VLIB_FRAME_SIZE - len); - if (PREDICT_FALSE - (vec_len (tm->threads[thread_index].rx_buffers) < - tm->mtu_buffers)) - { - vlib_node_increment_counter (vm, tapcli_rx_node.index, - TAPCLI_ERROR_BUFFER_ALLOC, - tm->mtu_buffers - - vec_len (tm->threads - [thread_index]. - rx_buffers)); - break; - } - } - - uword i_rx = vec_len (tm->threads[thread_index].rx_buffers) - 1; - - /* Allocate RX buffers from end of rx_buffers. - Turn them into iovecs to pass to readv. */ - vec_validate (tm->threads[thread_index].iovecs, tm->mtu_buffers - 1); - for (j = 0; j < tm->mtu_buffers; j++) - { - b = - vlib_get_buffer (vm, - tm->threads[thread_index].rx_buffers[i_rx - j]); - tm->threads[thread_index].iovecs[j].iov_base = b->data; - tm->threads[thread_index].iovecs[j].iov_len = buffer_size; - } - - n_bytes_left = readv (ti->unix_fd, tm->threads[thread_index].iovecs, - tm->mtu_buffers); - n_bytes_in_packet = n_bytes_left; - if (n_bytes_left <= 0) - { - if (errno != EAGAIN) - { - vlib_node_increment_counter (vm, tapcli_rx_node.index, - TAPCLI_ERROR_READ, 1); - } - break; - } - - bi_first = tm->threads[thread_index].rx_buffers[i_rx]; - b = b_first = vlib_get_buffer (vm, - tm->threads[thread_index]. - rx_buffers[i_rx]); - prev = NULL; - - while (1) - { - b->current_length = - n_bytes_left < buffer_size ? n_bytes_left : buffer_size; - n_bytes_left -= buffer_size; - - if (prev) - { - prev->next_buffer = bi; - prev->flags |= VLIB_BUFFER_NEXT_PRESENT; - } - prev = b; - - /* last segment */ - if (n_bytes_left <= 0) - break; - - i_rx--; - bi = tm->threads[thread_index].rx_buffers[i_rx]; - b = vlib_get_buffer (vm, bi); - } - - _vec_len (tm->threads[thread_index].rx_buffers) = i_rx; - - b_first->total_length_not_including_first_buffer = - (n_bytes_in_packet > - buffer_size) ? n_bytes_in_packet - buffer_size : 0; - b_first->flags |= VLIB_BUFFER_TOTAL_LENGTH_VALID; - - VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b_first); - - vnet_buffer (b_first)->sw_if_index[VLIB_RX] = ti->sw_if_index; - vnet_buffer (b_first)->sw_if_index[VLIB_TX] = (u32) ~ 0; - - b_first->error = node->errors[TAPCLI_ERROR_NONE]; - next_index = VNET_DEVICE_INPUT_NEXT_ETHERNET_INPUT; - next_index = (ti->per_interface_next_index != ~0) ? - ti->per_interface_next_index : next_index; - next_index = admin_down ? VNET_DEVICE_INPUT_NEXT_DROP : next_index; - - to_next[0] = bi_first; - to_next++; - n_left_to_next--; - - vnet_feature_start_device_input_x1 (ti->sw_if_index, &next_index, - b_first); - - vlib_validate_buffer_enqueue_x1 (vm, node, next, - to_next, n_left_to_next, - bi_first, next_index); - - /* Interface counters for tapcli interface. */ - if (PREDICT_TRUE (!admin_down)) - { - vlib_increment_combined_counter (vnet_main.interface_main. - combined_sw_if_counters + - VNET_INTERFACE_COUNTER_RX, - thread_index, ti->sw_if_index, 1, - n_bytes_in_packet); - - if (PREDICT_FALSE (n_trace > 0)) - { - vlib_trace_buffer (vm, node, next_index, - b_first, /* follow_chain */ 1); - n_trace--; - set_trace = 1; - tapcli_rx_trace_t *t0 = - vlib_add_trace (vm, node, b_first, sizeof (*t0)); - t0->sw_if_index = si->sw_if_index; - } - } - } - vlib_put_next_frame (vm, node, next, n_left_to_next); - if (set_trace) - vlib_set_trace_count (vm, node, n_trace); - return VLIB_FRAME_SIZE - n_left_to_next; -} - -/** - * @brief tapcli RX node function - * @node tap-cli-rx - * - * Input node from the Kernel tun/tap device - * - * @param *vm - vlib_main_t - * @param *node - vlib_node_runtime_t - * @param *frame - vlib_frame_t - * - * @return n_packets - uword - * - */ -static uword -tapcli_rx (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) -{ - tapcli_main_t *tm = &tapcli_main; - static u32 *ready_interface_indices; - tapcli_interface_t *ti; - int i; - u32 total_count = 0; - - vec_reset_length (ready_interface_indices); - /* *INDENT-OFF* */ - clib_bitmap_foreach (i, tm->pending_read_bitmap, - ({ - vec_add1 (ready_interface_indices, i); - })); - /* *INDENT-ON* */ - - if (vec_len (ready_interface_indices) == 0) - return 0; - - for (i = 0; i < vec_len (ready_interface_indices); i++) - { - tm->pending_read_bitmap = - clib_bitmap_set (tm->pending_read_bitmap, - ready_interface_indices[i], 0); - - ti = - vec_elt_at_index (tm->tapcli_interfaces, ready_interface_indices[i]); - total_count += tapcli_rx_iface (vm, node, ti); - } - return total_count; //This might return more than 256. -} - -/** TAPCLI error strings */ -static char *tapcli_rx_error_strings[] = { -#define _(sym,string) string, - foreach_tapcli_error -#undef _ -}; - -/* *INDENT-OFF* */ -VLIB_REGISTER_NODE (tapcli_rx_node, static) = { - .function = tapcli_rx, - .name = "tapcli-rx", - .sibling_of = "device-input", - .type = VLIB_NODE_TYPE_INPUT, - .state = VLIB_NODE_STATE_INTERRUPT, - .vector_size = 4, - .n_errors = TAPCLI_N_ERROR, - .error_strings = tapcli_rx_error_strings, - .format_trace = format_tapcli_rx_trace, -}; -/* *INDENT-ON* */ - - -/** - * @brief Gets called when file descriptor is ready from epoll. - * - * @param *uf - clib_file_t - * - * @return error - clib_error_t - * - */ -static clib_error_t * -tapcli_read_ready (clib_file_t * uf) -{ - vlib_main_t *vm = vlib_get_main (); - tapcli_main_t *tm = &tapcli_main; - uword *p; - - /** Schedule the rx node */ - vlib_node_set_interrupt_pending (vm, tapcli_rx_node.index); - - p = hash_get (tm->tapcli_interface_index_by_unix_fd, uf->file_descriptor); - - /** Mark the specific tap interface ready-to-read */ - if (p) - tm->pending_read_bitmap = clib_bitmap_set (tm->pending_read_bitmap, - p[0], 1); - else - clib_warning ("fd %d not in hash table", uf->file_descriptor); - - return 0; -} - -/** - * @brief CLI function for TAPCLI configuration - * - * @param *vm - vlib_main_t - * @param *input - unformat_input_t - * - * @return error - clib_error_t - * - */ -static clib_error_t * -tapcli_config (vlib_main_t * vm, unformat_input_t * input) -{ - tapcli_main_t *tm = &tapcli_main; - const uword buffer_size = VLIB_BUFFER_DATA_SIZE; - - while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) - { - if (unformat (input, "mtu %d", &tm->mtu_bytes)) - ; - else if (unformat (input, "disable")) - tm->is_disabled = 1; - else - return clib_error_return (0, "unknown input `%U'", - format_unformat_error, input); - } - - if (tm->is_disabled) - return 0; - - if (geteuid ()) - { - clib_warning ("tapcli disabled: must be superuser"); - tm->is_disabled = 1; - return 0; - } - - tm->mtu_buffers = (tm->mtu_bytes + (buffer_size - 1)) / buffer_size; - - return 0; -} - -/** - * @brief Renumber TAPCLI interface - * - * @param *hi - vnet_hw_interface_t - * @param new_dev_instance - u32 - * - * @return rc - int - * - */ -static int -tap_name_renumber (vnet_hw_interface_t * hi, u32 new_dev_instance) -{ - tapcli_main_t *tm = &tapcli_main; - - vec_validate_init_empty (tm->show_dev_instance_by_real_dev_instance, - hi->dev_instance, ~0); - - tm->show_dev_instance_by_real_dev_instance[hi->dev_instance] = - new_dev_instance; - - return 0; -} - -VLIB_CONFIG_FUNCTION (tapcli_config, "tapcli"); - -/** - * @brief Free "no punt" frame - * - * @param *vm - vlib_main_t - * @param *node - vlib_node_runtime_t - * @param *frame - vlib_frame_t - * - */ -static void -tapcli_nopunt_frame (vlib_main_t * vm, - vlib_node_runtime_t * node, vlib_frame_t * frame) -{ - u32 *buffers = vlib_frame_vector_args (frame); - uword n_packets = frame->n_vectors; - vlib_buffer_free (vm, buffers, n_packets); - vlib_frame_free (vm, node, frame); -} - -/* *INDENT-OFF* */ -VNET_HW_INTERFACE_CLASS (tapcli_interface_class,static) = { - .name = "tapcli", - .flags = VNET_HW_INTERFACE_CLASS_FLAG_P2P, -}; -/* *INDENT-ON* */ - -/** - * @brief Formatter for TAPCLI interface name - * - * @param *s - formatter string - * @param *args - va_list - * - * @return *s - formatted string - * - */ -static u8 * -format_tapcli_interface_name (u8 * s, va_list * args) -{ - u32 i = va_arg (*args, u32); - u32 show_dev_instance = ~0; - tapcli_main_t *tm = &tapcli_main; - - if (i < vec_len (tm->show_dev_instance_by_real_dev_instance)) - show_dev_instance = tm->show_dev_instance_by_real_dev_instance[i]; - - if (show_dev_instance != ~0) - i = show_dev_instance; - - s = format (s, "tapcli-%d", i); - return s; -} - -/** - * @brief Modify interface flags for TAPCLI interface - * - * @param *vnm - vnet_main_t - * @param *hw - vnet_hw_interface_t - * @param flags - u32 - * - * @return rc - u32 - * - */ -static u32 -tapcli_flag_change (vnet_main_t * vnm, vnet_hw_interface_t * hw, u32 flags) -{ - tapcli_main_t *tm = &tapcli_main; - tapcli_interface_t *ti; - - ti = vec_elt_at_index (tm->tapcli_interfaces, hw->dev_instance); - - if (flags & ETHERNET_INTERFACE_FLAG_MTU) - { - const uword buffer_size = VLIB_BUFFER_DATA_SIZE; - tm->mtu_bytes = hw->max_packet_bytes; - tm->mtu_buffers = (tm->mtu_bytes + (buffer_size - 1)) / buffer_size; - } - else - { - struct ifreq ifr; - u32 want_promisc; - - memcpy (&ifr, &ti->ifr, sizeof (ifr)); - - /* get flags, modify to bring up interface... */ - if (ioctl (ti->provision_fd, SIOCGIFFLAGS, &ifr) < 0) - { - clib_unix_warning ("Couldn't get interface flags for %s", hw->name); - return 0; - } - - want_promisc = (flags & ETHERNET_INTERFACE_FLAG_ACCEPT_ALL) != 0; - - if (want_promisc == ti->is_promisc) - return 0; - - if (flags & ETHERNET_INTERFACE_FLAG_ACCEPT_ALL) - ifr.ifr_flags |= IFF_PROMISC; - else - ifr.ifr_flags &= ~(IFF_PROMISC); - - /* get flags, modify to bring up interface... */ - if (ioctl (ti->provision_fd, SIOCSIFFLAGS, &ifr) < 0) - { - clib_unix_warning ("Couldn't set interface flags for %s", hw->name); - return 0; - } - - ti->is_promisc = want_promisc; - } - - return 0; -} - -/** - * @brief Setting the TAP interface's next processing node - * - * @param *vnm - vnet_main_t - * @param hw_if_index - u32 - * @param node_index - u32 - * - */ -static void -tapcli_set_interface_next_node (vnet_main_t * vnm, - u32 hw_if_index, u32 node_index) -{ - tapcli_main_t *tm = &tapcli_main; - tapcli_interface_t *ti; - vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, hw_if_index); - - ti = vec_elt_at_index (tm->tapcli_interfaces, hw->dev_instance); - - /** Shut off redirection */ - if (node_index == ~0) - { - ti->per_interface_next_index = node_index; - return; - } - - ti->per_interface_next_index = - vlib_node_add_next (tm->vlib_main, tapcli_rx_node.index, node_index); -} - -/** - * @brief Set link_state == admin_state otherwise things like ip6 neighbor discovery breaks - * - * @param *vnm - vnet_main_t - * @param hw_if_index - u32 - * @param flags - u32 - * - * @return error - clib_error_t - */ -static clib_error_t * -tapcli_interface_admin_up_down (vnet_main_t * vnm, u32 hw_if_index, u32 flags) -{ - uword is_admin_up = (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) != 0; - u32 hw_flags; - - if (is_admin_up) - hw_flags = VNET_HW_INTERFACE_FLAG_LINK_UP; - else - hw_flags = 0; - - vnet_hw_interface_set_flags (vnm, hw_if_index, hw_flags); - return 0; -} - -/* *INDENT-OFF* */ -VNET_DEVICE_CLASS (tapcli_dev_class,static) = { - .name = "tapcli", - .tx_function = tapcli_tx, - .format_device_name = format_tapcli_interface_name, - .rx_redirect_to_node = tapcli_set_interface_next_node, - .name_renumber = tap_name_renumber, - .admin_up_down_function = tapcli_interface_admin_up_down, -}; -/* *INDENT-ON* */ - -/** - * @brief Dump TAP interfaces - * - * @param **out_tapids - tapcli_interface_details_t - * - * @return rc - int - * - */ -int -vnet_tap_dump_ifs (tapcli_interface_details_t ** out_tapids) -{ - tapcli_main_t *tm = &tapcli_main; - tapcli_interface_t *ti; - - tapcli_interface_details_t *r_tapids = NULL; - tapcli_interface_details_t *tapid = NULL; - - vec_foreach (ti, tm->tapcli_interfaces) - { - if (!ti->active) - continue; - vec_add2 (r_tapids, tapid, 1); - tapid->sw_if_index = ti->sw_if_index; - strncpy ((char *) tapid->dev_name, ti->ifr.ifr_name, - sizeof (ti->ifr.ifr_name) - 1); - } - - *out_tapids = r_tapids; - - return 0; -} - -/** - * @brief Get tap interface from inactive interfaces or create new - * - * @return interface - tapcli_interface_t - * - */ -static tapcli_interface_t * -tapcli_get_new_tapif () -{ - tapcli_main_t *tm = &tapcli_main; - tapcli_interface_t *ti = NULL; - - int inactive_cnt = vec_len (tm->tapcli_inactive_interfaces); - // if there are any inactive ifaces - if (inactive_cnt > 0) - { - // take last - u32 ti_idx = tm->tapcli_inactive_interfaces[inactive_cnt - 1]; - if (vec_len (tm->tapcli_interfaces) > ti_idx) - { - ti = vec_elt_at_index (tm->tapcli_interfaces, ti_idx); - clib_warning ("reusing tap interface"); - } - // "remove" from inactive list - _vec_len (tm->tapcli_inactive_interfaces) -= 1; - } - - // ti was not retrieved from inactive ifaces - create new - if (!ti) - vec_add2 (tm->tapcli_interfaces, ti, 1); - - return ti; -} - -typedef struct -{ - ip6_address_t addr; - u32 mask_width; - unsigned int ifindex; -} ip6_ifreq_t; - -/** - * @brief Connect a TAP interface - * - * @param vm - vlib_main_t - * @param ap - vnet_tap_connect_args_t - * - * @return rc - int - * - */ -int -vnet_tap_connect (vlib_main_t * vm, vnet_tap_connect_args_t * ap) -{ - tapcli_main_t *tm = &tapcli_main; - tapcli_interface_t *ti = NULL; - struct ifreq ifr; - int flags; - int dev_net_tun_fd; - int dev_tap_fd = -1; - clib_error_t *error; - u8 hwaddr[6]; - int rv = 0; - - if (tm->is_disabled) - { - return VNET_API_ERROR_FEATURE_DISABLED; - } - - flags = IFF_TAP | IFF_NO_PI; - - if ((dev_net_tun_fd = open ("/dev/net/tun", O_RDWR)) < 0) - return VNET_API_ERROR_SYSCALL_ERROR_1; - - clib_memset (&ifr, 0, sizeof (ifr)); - strncpy (ifr.ifr_name, (char *) ap->intfc_name, sizeof (ifr.ifr_name) - 1); - ifr.ifr_flags = flags; - if (ioctl (dev_net_tun_fd, TUNSETIFF, (void *) &ifr) < 0) - { - rv = VNET_API_ERROR_SYSCALL_ERROR_2; - goto error; - } - - /* Open a provisioning socket */ - if ((dev_tap_fd = socket (PF_PACKET, SOCK_RAW, htons (ETH_P_ALL))) < 0) - { - rv = VNET_API_ERROR_SYSCALL_ERROR_3; - goto error; - } - - /* Find the interface index. */ - { - struct ifreq ifr; - struct sockaddr_ll sll; - - clib_memset (&ifr, 0, sizeof (ifr)); - strncpy (ifr.ifr_name, (char *) ap->intfc_name, - sizeof (ifr.ifr_name) - 1); - if (ioctl (dev_tap_fd, SIOCGIFINDEX, &ifr) < 0) - { - rv = VNET_API_ERROR_SYSCALL_ERROR_4; - goto error; - } - - /* Bind the provisioning socket to the interface. */ - clib_memset (&sll, 0, sizeof (sll)); - sll.sll_family = AF_PACKET; - sll.sll_ifindex = ifr.ifr_ifindex; - sll.sll_protocol = htons (ETH_P_ALL); - - if (bind (dev_tap_fd, (struct sockaddr *) &sll, sizeof (sll)) < 0) - { - rv = VNET_API_ERROR_SYSCALL_ERROR_5; - goto error; - } - } - - /* non-blocking I/O on /dev/tapX */ - { - int one = 1; - if (ioctl (dev_net_tun_fd, FIONBIO, &one) < 0) - { - rv = VNET_API_ERROR_SYSCALL_ERROR_6; - goto error; - } - } - ifr.ifr_mtu = tm->mtu_bytes; - if (ioctl (dev_tap_fd, SIOCSIFMTU, &ifr) < 0) - { - rv = VNET_API_ERROR_SYSCALL_ERROR_7; - goto error; - } - - /* get flags, modify to bring up interface... */ - if (ioctl (dev_tap_fd, SIOCGIFFLAGS, &ifr) < 0) - { - rv = VNET_API_ERROR_SYSCALL_ERROR_8; - goto error; - } - - ifr.ifr_flags |= (IFF_UP | IFF_RUNNING); - - if (ioctl (dev_tap_fd, SIOCSIFFLAGS, &ifr) < 0) - { - rv = VNET_API_ERROR_SYSCALL_ERROR_9; - goto error; - } - - if (ap->ip4_address_set) - { - struct sockaddr_in sin; - /* ip4: mask defaults to /24 */ - u32 mask = clib_host_to_net_u32 (0xFFFFFF00); - - clib_memset (&sin, 0, sizeof (sin)); - sin.sin_family = AF_INET; - /* sin.sin_port = 0; */ - sin.sin_addr.s_addr = ap->ip4_address->as_u32; - memcpy (&ifr.ifr_ifru.ifru_addr, &sin, sizeof (sin)); - - if (ioctl (dev_tap_fd, SIOCSIFADDR, &ifr) < 0) - { - rv = VNET_API_ERROR_SYSCALL_ERROR_10; - goto error; - } - - if (ap->ip4_mask_width > 0 && ap->ip4_mask_width < 33) - { - mask = ~0; - mask <<= (32 - ap->ip4_mask_width); - } - - mask = clib_host_to_net_u32 (mask); - sin.sin_family = AF_INET; - sin.sin_port = 0; - sin.sin_addr.s_addr = mask; - memcpy (&ifr.ifr_ifru.ifru_addr, &sin, sizeof (sin)); - - if (ioctl (dev_tap_fd, SIOCSIFNETMASK, &ifr) < 0) - { - rv = VNET_API_ERROR_SYSCALL_ERROR_10; - goto error; - } - } - - if (ap->ip6_address_set) - { - struct ifreq ifr2; - ip6_ifreq_t ifr6; - int sockfd6; - - sockfd6 = socket (AF_INET6, SOCK_DGRAM, IPPROTO_IP); - if (sockfd6 < 0) - { - rv = VNET_API_ERROR_SYSCALL_ERROR_10; - goto error; - } - - clib_memset (&ifr2, 0, sizeof (ifr)); - strncpy (ifr2.ifr_name, (char *) ap->intfc_name, - sizeof (ifr2.ifr_name) - 1); - if (ioctl (sockfd6, SIOCGIFINDEX, &ifr2) < 0) - { - close (sockfd6); - rv = VNET_API_ERROR_SYSCALL_ERROR_4; - goto error; - } - - memcpy (&ifr6.addr, ap->ip6_address, sizeof (ip6_address_t)); - ifr6.mask_width = ap->ip6_mask_width; - ifr6.ifindex = ifr2.ifr_ifindex; - - if (ioctl (sockfd6, SIOCSIFADDR, &ifr6) < 0) - { - close (sockfd6); - clib_unix_warning ("ifr6"); - rv = VNET_API_ERROR_SYSCALL_ERROR_10; - goto error; - } - close (sockfd6); - } - - ti = tapcli_get_new_tapif (); - ti->per_interface_next_index = ~0; - - if (ap->hwaddr_arg != 0) - clib_memcpy (hwaddr, ap->hwaddr_arg, 6); - else - { - f64 now = vlib_time_now (vm); - u32 rnd; - rnd = (u32) (now * 1e6); - rnd = random_u32 (&rnd); - - memcpy (hwaddr + 2, &rnd, sizeof (rnd)); - hwaddr[0] = 2; - hwaddr[1] = 0xfe; - } - - error = ethernet_register_interface - (tm->vnet_main, - tapcli_dev_class.index, - ti - tm->tapcli_interfaces /* device instance */ , - hwaddr /* ethernet address */ , - &ti->hw_if_index, tapcli_flag_change); - - if (error) - { - clib_error_report (error); - rv = VNET_API_ERROR_INVALID_REGISTRATION; - goto error; - } - - { - clib_file_t template = { 0 }; - template.read_function = tapcli_read_ready; - template.file_descriptor = dev_net_tun_fd; - ti->clib_file_index = clib_file_add (&file_main, &template); - ti->unix_fd = dev_net_tun_fd; - ti->provision_fd = dev_tap_fd; - clib_memcpy (&ti->ifr, &ifr, sizeof (ifr)); - } - - { - vnet_hw_interface_t *hw; - hw = vnet_get_hw_interface (tm->vnet_main, ti->hw_if_index); - hw->min_supported_packet_bytes = TAP_MTU_MIN; - hw->max_supported_packet_bytes = TAP_MTU_MAX; - vnet_sw_interface_set_mtu (tm->vnet_main, hw->sw_if_index, 9000); - ti->sw_if_index = hw->sw_if_index; - if (ap->sw_if_indexp) - *(ap->sw_if_indexp) = hw->sw_if_index; - } - - ti->active = 1; - - hash_set (tm->tapcli_interface_index_by_sw_if_index, ti->sw_if_index, - ti - tm->tapcli_interfaces); - - hash_set (tm->tapcli_interface_index_by_unix_fd, ti->unix_fd, - ti - tm->tapcli_interfaces); - - return rv; - -error: - close (dev_net_tun_fd); - if (dev_tap_fd >= 0) - close (dev_tap_fd); - - return rv; -} - -/** - * @brief Renumber a TAP interface - * - * @param *vm - vlib_main_t - * @param *intfc_name - u8 - * @param *hwaddr_arg - u8 - * @param *sw_if_indexp - u32 - * @param renumber - u8 - * @param custom_dev_instance - u32 - * - * @return rc - int - * - */ -int -vnet_tap_connect_renumber (vlib_main_t * vm, vnet_tap_connect_args_t * ap) -{ - int rv = vnet_tap_connect (vm, ap); - - if (!rv && ap->renumber) - vnet_interface_name_renumber (*(ap->sw_if_indexp), - ap->custom_dev_instance); - - return rv; -} - -/** - * @brief Disconnect TAP CLI interface - * - * @param *ti - tapcli_interface_t - * - * @return rc - int - * - */ -static int -tapcli_tap_disconnect (tapcli_interface_t * ti) -{ - int rv = 0; - vnet_main_t *vnm = vnet_get_main (); - tapcli_main_t *tm = &tapcli_main; - u32 sw_if_index = ti->sw_if_index; - - // bring interface down - vnet_sw_interface_set_flags (vnm, sw_if_index, 0); - - if (ti->clib_file_index != ~0) - { - clib_file_del (&file_main, file_main.file_pool + ti->clib_file_index); - ti->clib_file_index = ~0; - } - else - close (ti->unix_fd); - - hash_unset (tm->tapcli_interface_index_by_unix_fd, ti->unix_fd); - hash_unset (tm->tapcli_interface_index_by_sw_if_index, ti->sw_if_index); - close (ti->provision_fd); - ti->unix_fd = -1; - ti->provision_fd = -1; - - return rv; -} - -/** - * @brief Delete TAP interface - * - * @param *vm - vlib_main_t - * @param sw_if_index - u32 - * - * @return rc - int - * - */ -int -vnet_tap_delete (vlib_main_t * vm, u32 sw_if_index) -{ - int rv = 0; - tapcli_main_t *tm = &tapcli_main; - tapcli_interface_t *ti; - uword *p = NULL; - - p = hash_get (tm->tapcli_interface_index_by_sw_if_index, sw_if_index); - if (p == 0) - { - clib_warning ("sw_if_index %d unknown", sw_if_index); - return VNET_API_ERROR_INVALID_SW_IF_INDEX; - } - ti = vec_elt_at_index (tm->tapcli_interfaces, p[0]); - - // inactive - ti->active = 0; - tapcli_tap_disconnect (ti); - // add to inactive list - vec_add1 (tm->tapcli_inactive_interfaces, ti - tm->tapcli_interfaces); - - // reset renumbered iface - if (p[0] < vec_len (tm->show_dev_instance_by_real_dev_instance)) - tm->show_dev_instance_by_real_dev_instance[p[0]] = ~0; - - ethernet_delete_interface (tm->vnet_main, ti->hw_if_index); - return rv; -} - -/** - * @brief CLI function to delete TAP interface - * - * @param *vm - vlib_main_t - * @param *input - unformat_input_t - * @param *cmd - vlib_cli_command_t - * - * @return error - clib_error_t - * - */ -static clib_error_t * -tap_delete_command_fn (vlib_main_t * vm, - unformat_input_t * input, vlib_cli_command_t * cmd) -{ - tapcli_main_t *tm = &tapcli_main; - u32 sw_if_index = ~0; - - if (tm->is_disabled) - { - return clib_error_return (0, "device disabled..."); - } - - if (unformat (input, "%U", unformat_vnet_sw_interface, tm->vnet_main, - &sw_if_index)) - ; - else - return clib_error_return (0, "unknown input `%U'", - format_unformat_error, input); - - - int rc = vnet_tap_delete (vm, sw_if_index); - - if (!rc) - { - vlib_cli_output (vm, "Deleted."); - } - else - { - vlib_cli_output (vm, "Error during deletion of tap interface. (rc: %d)", - rc); - } - - return 0; -} - -/* *INDENT-OFF* */ -VLIB_CLI_COMMAND (tap_delete_command, static) = { - .path = "tap delete", - .short_help = "tap delete <vpp-tap-intfc-name>", - .function = tap_delete_command_fn, -}; -/* *INDENT-ON* */ - -/** - * @brief Modifies tap interface - can result in new interface being created - * - * @param *vm - vlib_main_t - * @param orig_sw_if_index - u32 - * @param *intfc_name - u8 - * @param *hwaddr_arg - u8 - * @param *sw_if_indexp - u32 - * @param renumber - u8 - * @param custom_dev_instance - u32 - * - * @return rc - int - * - */ -int -vnet_tap_modify (vlib_main_t * vm, vnet_tap_connect_args_t * ap) -{ - int rv = vnet_tap_delete (vm, ap->orig_sw_if_index); - - if (rv) - return rv; - - rv = vnet_tap_connect_renumber (vm, ap); - - return rv; -} - -/** - * @brief CLI function to modify TAP interface - * - * @param *vm - vlib_main_t - * @param *input - unformat_input_t - * @param *cmd - vlib_cli_command_t - * - * @return error - clib_error_t - * - */ -static clib_error_t * -tap_modify_command_fn (vlib_main_t * vm, - unformat_input_t * input, vlib_cli_command_t * cmd) -{ - u8 *intfc_name; - tapcli_main_t *tm = &tapcli_main; - u32 sw_if_index = ~0; - u32 new_sw_if_index = ~0; - int user_hwaddr = 0; - u8 hwaddr[6]; - vnet_tap_connect_args_t _a, *ap = &_a; - - if (tm->is_disabled) - { - return clib_error_return (0, "device disabled..."); - } - - if (unformat (input, "%U", unformat_vnet_sw_interface, tm->vnet_main, - &sw_if_index)) - ; - else - return clib_error_return (0, "unknown input `%U'", - format_unformat_error, input); - - if (unformat (input, "%s", &intfc_name)) - ; - else - return clib_error_return (0, "unknown input `%U'", - format_unformat_error, input); - - if (unformat (input, "hwaddr %U", unformat_ethernet_address, &hwaddr)) - user_hwaddr = 1; - - - clib_memset (ap, 0, sizeof (*ap)); - ap->orig_sw_if_index = sw_if_index; - ap->intfc_name = intfc_name; - ap->sw_if_indexp = &new_sw_if_index; - if (user_hwaddr) - ap->hwaddr_arg = hwaddr; - - int rc = vnet_tap_modify (vm, ap); - - if (!rc) - { - vlib_cli_output (vm, "Modified %U for Linux tap '%s'", - format_vnet_sw_if_index_name, tm->vnet_main, - *(ap->sw_if_indexp), ap->intfc_name); - } - else - { - vlib_cli_output (vm, - "Error during modification of tap interface. (rc: %d)", - rc); - } - - return 0; -} - -/* *INDENT-OFF* */ -VLIB_CLI_COMMAND (tap_modify_command, static) = { - .path = "tap modify", - .short_help = "tap modify <vpp-tap-intfc-name> <linux-intfc-name> [hwaddr <addr>]", - .function = tap_modify_command_fn, -}; -/* *INDENT-ON* */ - -/** - * @brief CLI function to connect TAP interface - * - * @param *vm - vlib_main_t - * @param *input - unformat_input_t - * @param *cmd - vlib_cli_command_t - * - * @return error - clib_error_t - * - */ -static clib_error_t * -tap_connect_command_fn (vlib_main_t * vm, - unformat_input_t * input, vlib_cli_command_t * cmd) -{ - u8 *intfc_name = 0; - unformat_input_t _line_input, *line_input = &_line_input; - vnet_tap_connect_args_t _a, *ap = &_a; - tapcli_main_t *tm = &tapcli_main; - u8 hwaddr[6]; - u8 *hwaddr_arg = 0; - u32 sw_if_index; - ip4_address_t ip4_address; - int ip4_address_set = 0; - ip6_address_t ip6_address; - int ip6_address_set = 0; - u32 ip4_mask_width = 0; - u32 ip6_mask_width = 0; - clib_error_t *error = NULL; - - if (tm->is_disabled) - return clib_error_return (0, "device disabled..."); - - if (!unformat_user (input, unformat_line_input, line_input)) - return 0; - - while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) - { - if (unformat (line_input, "hwaddr %U", unformat_ethernet_address, - &hwaddr)) - hwaddr_arg = hwaddr; - - /* It is here for backward compatibility */ - else if (unformat (line_input, "hwaddr random")) - ; - - else if (unformat (line_input, "address %U/%d", - unformat_ip4_address, &ip4_address, &ip4_mask_width)) - ip4_address_set = 1; - - else if (unformat (line_input, "address %U/%d", - unformat_ip6_address, &ip6_address, &ip6_mask_width)) - ip6_address_set = 1; - - else if (unformat (line_input, "%s", &intfc_name)) - ; - else - { - error = clib_error_return (0, "unknown input `%U'", - format_unformat_error, line_input); - goto done; - } - } - - if (intfc_name == 0) - { - error = clib_error_return (0, "interface name must be specified"); - goto done; - } - - clib_memset (ap, 0, sizeof (*ap)); - - ap->intfc_name = intfc_name; - ap->hwaddr_arg = hwaddr_arg; - if (ip4_address_set) - { - ap->ip4_address = &ip4_address; - ap->ip4_mask_width = ip4_mask_width; - ap->ip4_address_set = 1; - } - if (ip6_address_set) - { - ap->ip6_address = &ip6_address; - ap->ip6_mask_width = ip6_mask_width; - ap->ip6_address_set = 1; - } - - ap->sw_if_indexp = &sw_if_index; - - int rv = vnet_tap_connect (vm, ap); - - switch (rv) - { - case VNET_API_ERROR_SYSCALL_ERROR_1: - error = clib_error_return (0, "Couldn't open /dev/net/tun"); - goto done; - - case VNET_API_ERROR_SYSCALL_ERROR_2: - error = - clib_error_return (0, "Error setting flags on '%s'", intfc_name); - goto done; - - case VNET_API_ERROR_SYSCALL_ERROR_3: - error = clib_error_return (0, "Couldn't open provisioning socket"); - goto done; - - case VNET_API_ERROR_SYSCALL_ERROR_4: - error = clib_error_return (0, "Couldn't get if_index"); - goto done; - - case VNET_API_ERROR_SYSCALL_ERROR_5: - error = clib_error_return (0, "Couldn't bind provisioning socket"); - goto done; - - case VNET_API_ERROR_SYSCALL_ERROR_6: - error = clib_error_return (0, "Couldn't set device non-blocking flag"); - goto done; - - case VNET_API_ERROR_SYSCALL_ERROR_7: - error = clib_error_return (0, "Couldn't set device MTU"); - goto done; - - case VNET_API_ERROR_SYSCALL_ERROR_8: - error = clib_error_return (0, "Couldn't get interface flags"); - goto done; - - case VNET_API_ERROR_SYSCALL_ERROR_9: - error = clib_error_return (0, "Couldn't set intfc admin state up"); - goto done; - - case VNET_API_ERROR_SYSCALL_ERROR_10: - error = clib_error_return (0, "Couldn't set intfc address/mask"); - goto done; - - case VNET_API_ERROR_INVALID_REGISTRATION: - error = clib_error_return (0, "Invalid registration"); - goto done; - - case 0: - break; - - default: - error = clib_error_return (0, "Unknown error: %d", rv); - goto done; - } - - vlib_cli_output (vm, "%U\n", format_vnet_sw_if_index_name, - vnet_get_main (), sw_if_index); - -done: - unformat_free (line_input); - - return error; -} - -/* *INDENT-OFF* */ -VLIB_CLI_COMMAND (tap_connect_command, static) = { - .path = "tap connect", - .short_help = - "tap connect <intfc-name> [address <ip-addr>/mw] [hwaddr <addr>]", - .function = tap_connect_command_fn, -}; -/* *INDENT-ON* */ - -/** - * @brief TAPCLI main init - * - * @param *vm - vlib_main_t - * - * @return error - clib_error_t - * - */ -clib_error_t * -tapcli_init (vlib_main_t * vm) -{ - tapcli_main_t *tm = &tapcli_main; - vlib_thread_main_t *m = vlib_get_thread_main (); - tapcli_per_thread_t *thread; - - tm->vlib_main = vm; - tm->vnet_main = vnet_get_main (); - tm->mtu_bytes = TAP_MTU_DEFAULT; - tm->tapcli_interface_index_by_sw_if_index = hash_create (0, sizeof (uword)); - tm->tapcli_interface_index_by_unix_fd = hash_create (0, sizeof (uword)); - vm->os_punt_frame = tapcli_nopunt_frame; - vec_validate_aligned (tm->threads, m->n_vlib_mains - 1, - CLIB_CACHE_LINE_BYTES); - vec_foreach (thread, tm->threads) - { - thread->iovecs = 0; - thread->rx_buffers = 0; - vec_alloc (thread->rx_buffers, VLIB_FRAME_SIZE); - vec_reset_length (thread->rx_buffers); - } - - return 0; -} - -VLIB_INIT_FUNCTION (tapcli_init); - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ diff --git a/src/vnet/unix/tapcli.h b/src/vnet/unix/tapcli.h deleted file mode 100644 index 55a5a152b9c..00000000000 --- a/src/vnet/unix/tapcli.h +++ /dev/null @@ -1,62 +0,0 @@ -/* - * tapcli.h : tap support - * - * Copyright (c) 2013 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. - */ -/** - * @file - * @brief TAPCLI definitions - */ - -#ifndef __included_tapcli_h__ -#define __included_tapcli_h__ - -/** TAP CLI errors */ -#define foreach_tapcli_error \ - /* Must be first. */ \ - _(NONE, "no error") \ - _(READ, "read error") \ - _(BUFFER_ALLOC, "buffer allocation error") \ - _(UNKNOWN, "unknown error") - -typedef enum -{ -#define _(sym,str) TAPCLI_ERROR_##sym, - foreach_tapcli_error -#undef _ - TAPCLI_N_ERROR, -} tapcli_error_t; - -/** TAP CLI interface details struct */ -typedef struct -{ - u32 sw_if_index; - u8 dev_name[64]; -} tapcli_interface_details_t; - -int vnet_tap_dump_ifs (tapcli_interface_details_t ** out_tapids); - -#define TAP_MTU_MIN 68 -#define TAP_MTU_MAX 65535 -#define TAP_MTU_DEFAULT 1500 - -#endif /* __included_tapcli_h__ */ - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ |