diff options
Diffstat (limited to 'src/vnet/devices')
| -rw-r--r-- | src/vnet/devices/af_packet/FEATURE.yaml | 16 | ||||
| -rw-r--r-- | src/vnet/devices/af_packet/af_packet.api | 192 | ||||
| -rw-r--r-- | src/vnet/devices/af_packet/af_packet.c | 879 | ||||
| -rw-r--r-- | src/vnet/devices/af_packet/af_packet.h | 179 | ||||
| -rw-r--r-- | src/vnet/devices/af_packet/af_packet_api.c | 253 | ||||
| -rw-r--r-- | src/vnet/devices/af_packet/cli.c | 295 | ||||
| -rw-r--r-- | src/vnet/devices/af_packet/device.c | 836 | ||||
| -rw-r--r-- | src/vnet/devices/af_packet/dir.dox | 29 | ||||
| -rw-r--r-- | src/vnet/devices/af_packet/node.c | 845 |
9 files changed, 0 insertions, 3524 deletions
diff --git a/src/vnet/devices/af_packet/FEATURE.yaml b/src/vnet/devices/af_packet/FEATURE.yaml deleted file mode 100644 index 4a11ea2beb5..00000000000 --- a/src/vnet/devices/af_packet/FEATURE.yaml +++ /dev/null @@ -1,16 +0,0 @@ ---- -name: host-interface Device AF_PACKET -maintainer: Damjan Marion <damarion@cisco.com> -features: - - L4 checksum offload - - GSO offload -description: "Create a host interface that will attach to a linux AF_PACKET - interface, one side of a veth pair. The veth pair must - already exist. Once created, a new host interface will - exist in VPP with the name 'host-<ifname>', where '<ifname>' - is the name of the specified veth pair. Use the 'show interface' - command to display host interface details." -missing: - - API dump details beyond sw_if_index and name -state: production -properties: [API, CLI, STATS, MULTITHREAD] diff --git a/src/vnet/devices/af_packet/af_packet.api b/src/vnet/devices/af_packet/af_packet.api deleted file mode 100644 index a12da37796a..00000000000 --- a/src/vnet/devices/af_packet/af_packet.api +++ /dev/null @@ -1,192 +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. - */ - -option version = "2.0.0"; - -import "vnet/interface_types.api"; -import "vnet/ethernet/ethernet_types.api"; - -/** \brief Create host-interface - @param client_index - opaque cookie to identify the sender - @param context - sender context, to match reply w/ request - @param hw_addr - interface MAC - @param use_random_hw_addr - use random generated MAC - @param host_if_name - interface name -*/ -define af_packet_create -{ - u32 client_index; - u32 context; - - vl_api_mac_address_t hw_addr; - bool use_random_hw_addr; - string host_if_name[64]; -}; - -/** \brief Create host-interface response - @param context - sender context, to match reply w/ request - @param retval - return value for request -*/ -define af_packet_create_reply -{ - u32 context; - i32 retval; - vl_api_interface_index_t sw_if_index; -}; - -/** \brief Create host-interface - @param client_index - opaque cookie to identify the sender - @param context - sender context, to match reply w/ request - @param hw_addr - interface MAC - @param use_random_hw_addr - use random generated MAC - @param host_if_name - interface name - @param rx_frame_size - frame size for RX - @param tx_frame_size - frame size for TX - @param rx_frames_per_block - frames per block for RX - @param tx_frames_per_block - frames per block for TX - @param flags - flags for the af_packet interface creation - @param num_rx_queues - number of rx queues -*/ -define af_packet_create_v2 -{ - u32 client_index; - u32 context; - - vl_api_mac_address_t hw_addr; - bool use_random_hw_addr; - string host_if_name[64]; - u32 rx_frame_size; - u32 tx_frame_size; - u32 rx_frames_per_block; - u32 tx_frames_per_block; - u32 flags; - u16 num_rx_queues [default=1]; -}; - -/** \brief Create host-interface response - @param context - sender context, to match reply w/ request - @param retval - return value for request -*/ -define af_packet_create_v2_reply -{ - u32 context; - i32 retval; - vl_api_interface_index_t sw_if_index; -}; - -enum af_packet_mode { - AF_PACKET_API_MODE_ETHERNET = 1, /* mode ethernet */ - AF_PACKET_API_MODE_IP = 2, /* mode ip */ -}; - -enum af_packet_flags { - AF_PACKET_API_FLAG_QDISC_BYPASS = 1, /* enable the qdisc bypass */ - AF_PACKET_API_FLAG_CKSUM_GSO = 2, /* enable checksum/gso */ - AF_PACKET_API_FLAG_VERSION_2 = 8 [backwards_compatible], /* af packet v2, default is v3 */ -}; - -/** \brief Create host-interface - @param client_index - opaque cookie to identify the sender - @param context - sender context, to match reply w/ request - @param mode - 1 - Ethernet, 2 - IP - @param hw_addr - interface MAC - @param use_random_hw_addr - use random generated MAC - @param host_if_name - interface name - @param rx_frame_size - frame size for RX - @param tx_frame_size - frame size for TX - @param rx_frames_per_block - frames per block for RX - @param tx_frames_per_block - frames per block for TX - @param flags - flags for the af_packet interface creation - @param num_rx_queues - number of rx queues - @param num_tx_queues - number of tx queues -*/ -define af_packet_create_v3 -{ - u32 client_index; - u32 context; - - vl_api_af_packet_mode_t mode; - vl_api_mac_address_t hw_addr; - bool use_random_hw_addr; - string host_if_name[64]; - u32 rx_frame_size; - u32 tx_frame_size; - u32 rx_frames_per_block; - u32 tx_frames_per_block; - vl_api_af_packet_flags_t flags; - u16 num_rx_queues [default=1]; - u16 num_tx_queues [default=1]; -}; - -/** \brief Create host-interface response - @param context - sender context, to match reply w/ request - @param retval - return value for request -*/ -define af_packet_create_v3_reply -{ - u32 context; - i32 retval; - vl_api_interface_index_t sw_if_index; -}; - -/** \brief Delete host-interface - @param client_index - opaque cookie to identify the sender - @param context - sender context, to match reply w/ request - @param host_if_name - interface name -*/ -autoreply define af_packet_delete -{ - u32 client_index; - u32 context; - - string host_if_name[64]; -}; - -/** \brief Set l4 offload checksum calculation - @param client_index - opaque cookie to identify the sender - @param context - sender context, to match reply w/ request -*/ -autoreply define af_packet_set_l4_cksum_offload -{ - u32 client_index; - u32 context; - - vl_api_interface_index_t sw_if_index; - bool set; -}; - -/** \brief Dump af_packet interfaces request */ -define af_packet_dump -{ - u32 client_index; - u32 context; -}; - -/** \brief Reply for af_packet dump request - @param sw_if_index - software index of af_packet interface - @param host_if_name - interface name -*/ -define af_packet_details -{ - u32 context; - vl_api_interface_index_t sw_if_index; - string host_if_name[64]; -}; - -/* - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ diff --git a/src/vnet/devices/af_packet/af_packet.c b/src/vnet/devices/af_packet/af_packet.c deleted file mode 100644 index f5493dd088e..00000000000 --- a/src/vnet/devices/af_packet/af_packet.c +++ /dev/null @@ -1,879 +0,0 @@ -/* - *------------------------------------------------------------------ - * af_packet.c - linux kernel packet interface - * - * 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 <linux/if_ether.h> -#include <linux/if_packet.h> -#include <sys/ioctl.h> -#include <net/if.h> -#include <dirent.h> -#include <sys/stat.h> -#include <sys/types.h> -#include <fcntl.h> - -#include <vppinfra/linux/sysfs.h> -#include <vlib/vlib.h> -#include <vlib/unix/unix.h> -#include <vnet/ip/ip.h> -#include <vnet/devices/netlink.h> -#include <vnet/ethernet/ethernet.h> -#include <vnet/interface/rx_queue_funcs.h> -#include <vnet/interface/tx_queue_funcs.h> - -#include <vnet/devices/af_packet/af_packet.h> - -af_packet_main_t af_packet_main; - -VNET_HW_INTERFACE_CLASS (af_packet_ip_device_hw_interface_class, static) = { - .name = "af-packet-ip-device", - .flags = VNET_HW_INTERFACE_CLASS_FLAG_P2P, -}; - -#define AF_PACKET_DEFAULT_TX_FRAMES_PER_BLOCK 1024 -#define AF_PACKET_DEFAULT_TX_FRAME_SIZE (2048 * 33) // GSO packet of 64KB -#define AF_PACKET_TX_BLOCK_NR 1 - -#define AF_PACKET_DEFAULT_RX_FRAMES_PER_BLOCK_V2 1024 -#define AF_PACKET_DEFAULT_RX_FRAME_SIZE_V2 (2048 * 33) // GSO packet of 64KB -#define AF_PACKET_RX_BLOCK_NR_V2 1 - -#define AF_PACKET_DEFAULT_RX_FRAMES_PER_BLOCK 32 -#define AF_PACKET_DEFAULT_RX_FRAME_SIZE 2048 -#define AF_PACKET_RX_BLOCK_NR 160 - -/*defined in net/if.h but clashes with dpdk headers */ -unsigned int if_nametoindex (const char *ifname); - -static clib_error_t * -af_packet_eth_set_max_frame_size (vnet_main_t *vnm, vnet_hw_interface_t *hi, - u32 frame_size) -{ - clib_error_t *error, *rv; - af_packet_main_t *apm = &af_packet_main; - af_packet_if_t *apif = pool_elt_at_index (apm->interfaces, hi->dev_instance); - - error = vnet_netlink_set_link_mtu (apif->host_if_index, - frame_size + hi->frame_overhead); - - if (error) - { - vlib_log_err (apm->log_class, "netlink failed to change MTU: %U", - format_clib_error, error); - rv = vnet_error (VNET_ERR_SYSCALL_ERROR_1, "netlink error: %U", - format_clib_error, error); - clib_error_free (error); - return rv; - } - else - apif->host_mtu = frame_size + hi->frame_overhead; - return 0; -} - -static int -af_packet_read_mtu (af_packet_if_t *apif) -{ - af_packet_main_t *apm = &af_packet_main; - clib_error_t *error; - error = vnet_netlink_get_link_mtu (apif->host_if_index, &apif->host_mtu); - if (error) - { - vlib_log_err (apm->log_class, "netlink failed to get MTU: %U", - format_clib_error, error); - clib_error_free (error); - return VNET_API_ERROR_SYSCALL_ERROR_1; - } - return 0; -} - -static clib_error_t * -af_packet_fd_read_ready (clib_file_t * uf) -{ - vnet_main_t *vnm = vnet_get_main (); - - /* Schedule the rx node */ - vnet_hw_if_rx_queue_set_int_pending (vnm, uf->private_data); - return 0; -} - -static int -is_bridge (const u8 * host_if_name) -{ - u8 *s; - DIR *dir = NULL; - - s = format (0, "/sys/class/net/%s/bridge%c", host_if_name, 0); - dir = opendir ((char *) s); - vec_free (s); - - if (dir) - { - closedir (dir); - return 0; - } - - return -1; -} - -static void -af_packet_set_rx_queues (vlib_main_t *vm, af_packet_if_t *apif) -{ - vnet_main_t *vnm = vnet_get_main (); - af_packet_queue_t *rx_queue; - - vnet_hw_if_set_input_node (vnm, apif->hw_if_index, - af_packet_input_node.index); - - vec_foreach (rx_queue, apif->rx_queues) - { - rx_queue->queue_index = vnet_hw_if_register_rx_queue ( - vnm, apif->hw_if_index, rx_queue->queue_id, VNET_HW_IF_RXQ_THREAD_ANY); - - { - clib_file_t template = { 0 }; - template.read_function = af_packet_fd_read_ready; - template.file_descriptor = rx_queue->fd; - template.private_data = rx_queue->queue_index; - template.flags = UNIX_FILE_EVENT_EDGE_TRIGGERED; - template.description = - format (0, "%U queue %u", format_af_packet_device_name, - apif->dev_instance, rx_queue->queue_id); - rx_queue->clib_file_index = clib_file_add (&file_main, &template); - } - vnet_hw_if_set_rx_queue_file_index (vnm, rx_queue->queue_index, - rx_queue->clib_file_index); - vnet_hw_if_set_rx_queue_mode (vnm, rx_queue->queue_index, - VNET_HW_IF_RX_MODE_INTERRUPT); - rx_queue->mode = VNET_HW_IF_RX_MODE_INTERRUPT; - } - vnet_hw_if_update_runtime_data (vnm, apif->hw_if_index); -} - -static void -af_packet_set_tx_queues (vlib_main_t *vm, af_packet_if_t *apif) -{ - vnet_main_t *vnm = vnet_get_main (); - af_packet_main_t *apm = &af_packet_main; - af_packet_queue_t *tx_queue; - - vec_foreach (tx_queue, apif->tx_queues) - { - tx_queue->queue_index = vnet_hw_if_register_tx_queue ( - vnm, apif->hw_if_index, tx_queue->queue_id); - } - - if (apif->num_txqs == 0) - { - vlib_log_err (apm->log_class, "Interface %U has 0 txq", - format_vnet_hw_if_index_name, vnm, apif->hw_if_index); - return; - } - - for (u32 j = 0; j < vlib_get_n_threads (); j++) - { - u32 qi = apif->tx_queues[j % apif->num_txqs].queue_index; - vnet_hw_if_tx_queue_assign_thread (vnm, qi, j); - } - - vnet_hw_if_update_runtime_data (vnm, apif->hw_if_index); -} - -static int -create_packet_sock (int host_if_index, tpacket_req_u_t *rx_req, - tpacket_req_u_t *tx_req, int *fd, af_packet_ring_t *ring, - u32 fanout_id, af_packet_if_flags_t *flags, int ver) -{ - af_packet_main_t *apm = &af_packet_main; - struct sockaddr_ll sll; - socklen_t req_sz = sizeof (tpacket_req3_t); - int ret; - u32 ring_sz = 0; - - if ((*fd = socket (AF_PACKET, SOCK_RAW, htons (ETH_P_ALL))) < 0) - { - vlib_log_err (apm->log_class, - "Failed to create AF_PACKET socket: %s (errno %d)", - strerror (errno), errno); - ret = VNET_API_ERROR_SYSCALL_ERROR_1; - goto error; - } - - /* bind before rx ring is cfged so we don't receive packets from other interfaces */ - clib_memset (&sll, 0, sizeof (sll)); - sll.sll_family = PF_PACKET; - sll.sll_protocol = htons (ETH_P_ALL); - sll.sll_ifindex = host_if_index; - if (bind (*fd, (struct sockaddr *) &sll, sizeof (sll)) < 0) - { - vlib_log_err (apm->log_class, - "Failed to bind rx packet socket: %s (errno %d)", - strerror (errno), errno); - ret = VNET_API_ERROR_SYSCALL_ERROR_1; - goto error; - } - - if (setsockopt (*fd, SOL_PACKET, PACKET_VERSION, &ver, sizeof (ver)) < 0) - { - vlib_log_err (apm->log_class, - "Failed to set rx packet interface version: %s (errno %d)", - strerror (errno), errno); - ret = VNET_API_ERROR_SYSCALL_ERROR_1; - goto error; - } - - int opt = 1; - if (setsockopt (*fd, SOL_PACKET, PACKET_LOSS, &opt, sizeof (opt)) < 0) - { - vlib_log_err ( - apm->log_class, - "Failed to set packet tx ring error handling option: %s (errno %d)", - strerror (errno), errno); - ret = VNET_API_ERROR_SYSCALL_ERROR_1; - goto error; - } - - if (*flags & AF_PACKET_IF_FLAGS_CKSUM_GSO) - { - - int opt2 = 1; - if (setsockopt (*fd, SOL_PACKET, PACKET_VNET_HDR, &opt2, sizeof (opt2)) < - 0) - { - // remove the flag - *flags &= ~AF_PACKET_IF_FLAGS_CKSUM_GSO; - vlib_log_debug (apm->log_class, - "Failed to set packet vnet hdr error handling " - "option: %s (errno %d)", - strerror (errno), errno); - } - } - -#if defined(PACKET_QDISC_BYPASS) - if (*flags & AF_PACKET_IF_FLAGS_QDISC_BYPASS) - /* Introduced with Linux 3.14 so the ifdef should eventually be removed */ - if (setsockopt (*fd, SOL_PACKET, PACKET_QDISC_BYPASS, &opt, sizeof (opt)) < - 0) - { - // remove the flag - *flags &= ~AF_PACKET_IF_FLAGS_QDISC_BYPASS; - vlib_log_debug (apm->log_class, - "Failed to set qdisc bypass error " - "handling option: %s (errno %d)", - strerror (errno), errno); - } -#endif - - if (rx_req) - { - if (*flags & AF_PACKET_IF_FLAGS_FANOUT) - { - int fanout = ((fanout_id & 0xffff) | ((PACKET_FANOUT_HASH) << 16)); - if (setsockopt (*fd, SOL_PACKET, PACKET_FANOUT, &fanout, - sizeof (fanout)) < 0) - { - // remove the flag - *flags &= ~AF_PACKET_IF_FLAGS_FANOUT; - vlib_log_err (apm->log_class, - "Failed to set fanout options: %s (errno %d)", - strerror (errno), errno); - ret = VNET_API_ERROR_SYSCALL_ERROR_1; - goto error; - } - } - if (ver == TPACKET_V2) - { - req_sz = sizeof (tpacket_req_t); - ring_sz += rx_req->req.tp_block_size * rx_req->req.tp_block_nr; - } - else - ring_sz += rx_req->req3.tp_block_size * rx_req->req3.tp_block_nr; - if (setsockopt (*fd, SOL_PACKET, PACKET_RX_RING, rx_req, req_sz) < 0) - { - vlib_log_err (apm->log_class, - "Failed to set packet rx ring options: %s (errno %d)", - strerror (errno), errno); - ret = VNET_API_ERROR_SYSCALL_ERROR_1; - goto error; - } - } - - if (tx_req) - { - if (ver == TPACKET_V2) - { - req_sz = sizeof (tpacket_req_t); - ring_sz += tx_req->req.tp_block_size * tx_req->req.tp_block_nr; - } - else - ring_sz += tx_req->req3.tp_block_size * tx_req->req3.tp_block_nr; - if (setsockopt (*fd, SOL_PACKET, PACKET_TX_RING, tx_req, req_sz) < 0) - { - vlib_log_err (apm->log_class, - "Failed to set packet tx ring options: %s (errno %d)", - strerror (errno), errno); - ret = VNET_API_ERROR_SYSCALL_ERROR_1; - goto error; - } - } - ring->ring_start_addr = mmap (NULL, ring_sz, PROT_READ | PROT_WRITE, - MAP_SHARED | MAP_LOCKED, *fd, 0); - if (ring->ring_start_addr == MAP_FAILED) - { - vlib_log_err (apm->log_class, "mmap failure: %s (errno %d)", - strerror (errno), errno); - ret = VNET_API_ERROR_SYSCALL_ERROR_1; - goto error; - } - - ring->ring_size = ring_sz; - - return 0; -error: - if (*fd >= 0) - { - close (*fd); - *fd = -1; - } - return ret; -} - -int -af_packet_queue_init (vlib_main_t *vm, af_packet_if_t *apif, - af_packet_create_if_arg_t *arg, - af_packet_queue_t *rx_queue, af_packet_queue_t *tx_queue, - u8 queue_id) -{ - af_packet_main_t *apm = &af_packet_main; - tpacket_req_u_t *rx_req = 0; - tpacket_req_u_t *tx_req = 0; - int ret, fd = -1; - af_packet_ring_t ring = { 0 }; - u8 *ring_addr = 0; - u32 rx_frames_per_block, tx_frames_per_block; - u32 rx_frame_size, tx_frame_size; - u32 i = 0; - - if (rx_queue) - { - rx_frames_per_block = arg->rx_frames_per_block ? - arg->rx_frames_per_block : - ((apif->version == TPACKET_V3) ? - AF_PACKET_DEFAULT_RX_FRAMES_PER_BLOCK : - AF_PACKET_DEFAULT_RX_FRAMES_PER_BLOCK_V2); - - rx_frame_size = - arg->rx_frame_size ? - arg->rx_frame_size : - ((apif->version == TPACKET_V3) ? AF_PACKET_DEFAULT_RX_FRAME_SIZE : - AF_PACKET_DEFAULT_RX_FRAME_SIZE_V2); - vec_validate (rx_queue->rx_req, 0); - rx_queue->rx_req->req.tp_block_size = - rx_frame_size * rx_frames_per_block; - rx_queue->rx_req->req.tp_frame_size = rx_frame_size; - rx_queue->rx_req->req.tp_block_nr = (apif->version == TPACKET_V3) ? - AF_PACKET_RX_BLOCK_NR : - AF_PACKET_RX_BLOCK_NR_V2; - rx_queue->rx_req->req.tp_frame_nr = - rx_queue->rx_req->req.tp_block_nr * rx_frames_per_block; - if (apif->version == TPACKET_V3) - { - rx_queue->rx_req->req3.tp_retire_blk_tov = 1; // 1 ms block timout - rx_queue->rx_req->req3.tp_feature_req_word = 0; - rx_queue->rx_req->req3.tp_sizeof_priv = 0; - } - rx_req = rx_queue->rx_req; - } - if (tx_queue) - { - tx_frames_per_block = arg->tx_frames_per_block ? - arg->tx_frames_per_block : - AF_PACKET_DEFAULT_TX_FRAMES_PER_BLOCK; - tx_frame_size = arg->tx_frame_size ? arg->tx_frame_size : - AF_PACKET_DEFAULT_TX_FRAME_SIZE; - - vec_validate (tx_queue->tx_req, 0); - tx_queue->tx_req->req.tp_block_size = - tx_frame_size * tx_frames_per_block; - tx_queue->tx_req->req.tp_frame_size = tx_frame_size; - tx_queue->tx_req->req.tp_block_nr = AF_PACKET_TX_BLOCK_NR; - tx_queue->tx_req->req.tp_frame_nr = - AF_PACKET_TX_BLOCK_NR * tx_frames_per_block; - if (apif->version == TPACKET_V3) - { - tx_queue->tx_req->req3.tp_retire_blk_tov = 0; - tx_queue->tx_req->req3.tp_sizeof_priv = 0; - tx_queue->tx_req->req3.tp_feature_req_word = 0; - } - tx_req = tx_queue->tx_req; - } - - if (rx_queue || tx_queue) - { - ret = - create_packet_sock (apif->host_if_index, rx_req, tx_req, &fd, &ring, - apif->dev_instance, &arg->flags, apif->version); - - if (ret != 0) - goto error; - - vec_add1 (apif->rings, ring); - ring_addr = ring.ring_start_addr; - } - - if (rx_queue) - { - rx_queue->fd = fd; - vec_validate (rx_queue->rx_ring, rx_queue->rx_req->req.tp_block_nr - 1); - vec_foreach_index (i, rx_queue->rx_ring) - { - rx_queue->rx_ring[i] = - ring_addr + i * rx_queue->rx_req->req.tp_block_size; - } - - rx_queue->next_rx_block = 0; - rx_queue->queue_id = queue_id; - rx_queue->is_rx_pending = 0; - ring_addr = ring_addr + rx_queue->rx_req->req.tp_block_size * - rx_queue->rx_req->req.tp_block_nr; - } - - if (tx_queue) - { - tx_queue->fd = fd; - vec_validate (tx_queue->tx_ring, tx_queue->tx_req->req.tp_block_nr - 1); - vec_foreach_index (i, tx_queue->tx_ring) - { - tx_queue->tx_ring[i] = - ring_addr + i * tx_queue->tx_req->req.tp_block_size; - } - - tx_queue->next_tx_frame = 0; - tx_queue->queue_id = queue_id; - tx_queue->is_tx_pending = 0; - clib_spinlock_init (&tx_queue->lockp); - } - - return 0; -error: - vlib_log_err (apm->log_class, "Failed to set queue %u error", queue_id); - if (rx_queue) - vec_free (rx_queue->rx_req); - if (tx_queue) - vec_free (tx_queue->tx_req); - return ret; -} - -int -af_packet_device_init (vlib_main_t *vm, af_packet_if_t *apif, - af_packet_create_if_arg_t *args) -{ - af_packet_main_t *apm = &af_packet_main; - af_packet_queue_t *rx_queue = 0; - af_packet_queue_t *tx_queue = 0; - u16 nq = clib_min (args->num_rxqs, args->num_txqs); - u16 i = 0; - int ret = 0; - - // enable fanout feature for multi-rxqs - if (args->num_rxqs > 1) - args->flags |= AF_PACKET_IF_FLAGS_FANOUT; - - vec_validate (apif->rx_queues, args->num_rxqs - 1); - vec_validate (apif->tx_queues, args->num_txqs - 1); - - for (; i < nq; i++) - { - rx_queue = vec_elt_at_index (apif->rx_queues, i); - tx_queue = vec_elt_at_index (apif->tx_queues, i); - ret = af_packet_queue_init (vm, apif, args, rx_queue, tx_queue, i); - if (ret != 0) - goto error; - } - - if (args->num_rxqs > args->num_txqs) - { - for (; i < args->num_rxqs; i++) - { - rx_queue = vec_elt_at_index (apif->rx_queues, i); - ret = af_packet_queue_init (vm, apif, args, rx_queue, 0, i); - if (ret != 0) - goto error; - } - } - else if (args->num_txqs > args->num_rxqs) - { - for (; i < args->num_txqs; i++) - { - tx_queue = vec_elt_at_index (apif->tx_queues, i); - ret = af_packet_queue_init (vm, apif, args, 0, tx_queue, i); - if (ret != 0) - goto error; - } - } - - apif->num_rxqs = args->num_rxqs; - apif->num_txqs = args->num_txqs; - - return 0; -error: - vlib_log_err (apm->log_class, "Failed to init device error"); - return ret; -} - -int -af_packet_create_if (af_packet_create_if_arg_t *arg) -{ - af_packet_main_t *apm = &af_packet_main; - vlib_main_t *vm = vlib_get_main (); - int fd2 = -1; - struct ifreq ifr; - af_packet_if_t *apif = 0; - u8 hw_addr[6]; - vnet_sw_interface_t *sw; - vnet_main_t *vnm = vnet_get_main (); - vnet_hw_if_caps_t caps = VNET_HW_IF_CAP_INT_MODE; - uword *p; - uword if_index; - u8 *host_if_name_dup = 0; - int host_if_index = -1; - int ret = 0; - - p = mhash_get (&apm->if_index_by_host_if_name, arg->host_if_name); - if (p) - { - apif = vec_elt_at_index (apm->interfaces, p[0]); - arg->sw_if_index = apif->sw_if_index; - return VNET_API_ERROR_IF_ALREADY_EXISTS; - } - - host_if_name_dup = vec_dup (arg->host_if_name); - - /* - * make sure host side of interface is 'UP' before binding AF_PACKET - * socket on it. - */ - if ((fd2 = socket (AF_UNIX, SOCK_DGRAM, 0)) < 0) - { - vlib_log_debug (apm->log_class, - "Failed to create AF_UNIX socket: %s (errno %d)", - strerror (errno), errno); - ret = VNET_API_ERROR_SYSCALL_ERROR_1; - goto error; - } - - clib_memcpy (ifr.ifr_name, (const char *) arg->host_if_name, - vec_len (arg->host_if_name)); - if (ioctl (fd2, SIOCGIFINDEX, &ifr) < 0) - { - vlib_log_debug ( - apm->log_class, - "Failed to retrieve the interface (%s) index: %s (errno %d)", - arg->host_if_name, strerror (errno), errno); - ret = VNET_API_ERROR_INVALID_INTERFACE; - goto error; - } - - host_if_index = ifr.ifr_ifindex; - if (ioctl (fd2, SIOCGIFFLAGS, &ifr) < 0) - { - vlib_log_debug (apm->log_class, - "Failed to get the active flag: %s (errno %d)", - strerror (errno), errno); - ret = VNET_API_ERROR_SYSCALL_ERROR_1; - goto error; - } - - if (!(ifr.ifr_flags & IFF_UP)) - { - ifr.ifr_flags |= IFF_UP; - if (ioctl (fd2, SIOCSIFFLAGS, &ifr) < 0) - { - vlib_log_debug (apm->log_class, - "Failed to set the active flag: %s (errno %d)", - strerror (errno), errno); - ret = VNET_API_ERROR_SYSCALL_ERROR_1; - goto error; - } - } - - if (fd2 > -1) - { - close (fd2); - fd2 = -1; - } - - ret = is_bridge (arg->host_if_name); - if (ret == 0) /* is a bridge, ignore state */ - host_if_index = -1; - - /* So far everything looks good, let's create interface */ - pool_get (apm->interfaces, apif); - if_index = apif - apm->interfaces; - - apif->dev_instance = if_index; - apif->host_if_index = host_if_index; - apif->host_if_name = host_if_name_dup; - apif->per_interface_next_index = ~0; - apif->mode = arg->mode; - - if (arg->is_v2) - apif->version = TPACKET_V2; - else - apif->version = TPACKET_V3; - - ret = af_packet_device_init (vm, apif, arg); - if (ret != 0) - goto error; - - ret = af_packet_read_mtu (apif); - if (ret != 0) - goto error; - - - if (apif->mode != AF_PACKET_IF_MODE_IP) - { - vnet_eth_interface_registration_t eir = {}; - /*use configured or generate random MAC address */ - if (arg->hw_addr) - clib_memcpy (hw_addr, arg->hw_addr, 6); - else - { - f64 now = vlib_time_now (vm); - u32 rnd; - rnd = (u32) (now * 1e6); - rnd = random_u32 (&rnd); - - clib_memcpy (hw_addr + 2, &rnd, sizeof (rnd)); - hw_addr[0] = 2; - hw_addr[1] = 0xfe; - } - - eir.dev_class_index = af_packet_device_class.index; - eir.dev_instance = apif->dev_instance; - eir.address = hw_addr; - eir.cb.set_max_frame_size = af_packet_eth_set_max_frame_size; - apif->hw_if_index = vnet_eth_register_interface (vnm, &eir); - } - else - { - apif->hw_if_index = vnet_register_interface ( - vnm, af_packet_device_class.index, apif->dev_instance, - af_packet_ip_device_hw_interface_class.index, apif->dev_instance); - } - - sw = vnet_get_hw_sw_interface (vnm, apif->hw_if_index); - apif->sw_if_index = sw->sw_if_index; - - af_packet_set_rx_queues (vm, apif); - af_packet_set_tx_queues (vm, apif); - - if (arg->flags & AF_PACKET_IF_FLAGS_FANOUT) - apif->is_fanout_enabled = 1; - - apif->is_qdisc_bypass_enabled = - (arg->flags & AF_PACKET_IF_FLAGS_QDISC_BYPASS); - - if (arg->flags & AF_PACKET_IF_FLAGS_CKSUM_GSO) - apif->is_cksum_gso_enabled = 1; - - if (apif->is_cksum_gso_enabled) - caps |= VNET_HW_IF_CAP_TCP_GSO | VNET_HW_IF_CAP_TX_IP4_CKSUM | - VNET_HW_IF_CAP_TX_TCP_CKSUM | VNET_HW_IF_CAP_TX_UDP_CKSUM; - - vnet_hw_if_set_caps (vnm, apif->hw_if_index, caps); - vnet_hw_interface_set_flags (vnm, apif->hw_if_index, - VNET_HW_INTERFACE_FLAG_LINK_UP); - - mhash_set_mem (&apm->if_index_by_host_if_name, host_if_name_dup, &if_index, - 0); - arg->sw_if_index = apif->sw_if_index; - - return 0; - -error: - if (fd2 > -1) - { - close (fd2); - fd2 = -1; - } - vec_free (host_if_name_dup); - if (apif) - { - memset (apif, 0, sizeof (*apif)); - pool_put (apm->interfaces, apif); - } - return ret; -} - -static int -af_packet_rx_queue_free (af_packet_if_t *apif, af_packet_queue_t *rx_queue) -{ - clib_file_del_by_index (&file_main, rx_queue->clib_file_index); - close (rx_queue->fd); - rx_queue->fd = -1; - rx_queue->rx_ring = NULL; - vec_free (rx_queue->rx_req); - rx_queue->rx_req = NULL; - return 0; -} - -static int -af_packet_tx_queue_free (af_packet_if_t *apif, af_packet_queue_t *tx_queue) -{ - close (tx_queue->fd); - tx_queue->fd = -1; - clib_spinlock_free (&tx_queue->lockp); - tx_queue->tx_ring = NULL; - vec_free (tx_queue->tx_req); - tx_queue->tx_req = NULL; - return 0; -} - -static int -af_packet_ring_free (af_packet_if_t *apif, af_packet_ring_t *ring) -{ - af_packet_main_t *apm = &af_packet_main; - - if (ring) - { - // FIXME: unmap the memory - if (munmap (ring->ring_start_addr, ring->ring_size)) - vlib_log_warn (apm->log_class, - "Host interface %s could not free ring %p of size %u", - apif->host_if_name, ring->ring_start_addr, - ring->ring_size); - else - ring->ring_start_addr = 0; - } - - return 0; -} - -int -af_packet_delete_if (u8 *host_if_name) -{ - vnet_main_t *vnm = vnet_get_main (); - af_packet_main_t *apm = &af_packet_main; - af_packet_if_t *apif; - af_packet_queue_t *rx_queue; - af_packet_queue_t *tx_queue; - af_packet_ring_t *ring; - uword *p; - - p = mhash_get (&apm->if_index_by_host_if_name, host_if_name); - if (p == NULL) - { - vlib_log_warn (apm->log_class, "Host interface %s does not exist", - host_if_name); - return VNET_API_ERROR_SYSCALL_ERROR_1; - } - apif = pool_elt_at_index (apm->interfaces, p[0]); - - /* bring down the interface */ - vnet_hw_interface_set_flags (vnm, apif->hw_if_index, 0); - if (apif->mode != AF_PACKET_IF_MODE_IP) - ethernet_delete_interface (vnm, apif->hw_if_index); - else - vnet_delete_hw_interface (vnm, apif->hw_if_index); - - /* clean up */ - vec_foreach (rx_queue, apif->rx_queues) - af_packet_rx_queue_free (apif, rx_queue); - vec_foreach (tx_queue, apif->tx_queues) - af_packet_tx_queue_free (apif, tx_queue); - vec_foreach (ring, apif->rings) - af_packet_ring_free (apif, ring); - - vec_free (apif->rx_queues); - apif->rx_queues = NULL; - vec_free (apif->tx_queues); - apif->tx_queues = NULL; - vec_free (apif->rings); - apif->rings = NULL; - - vec_free (apif->host_if_name); - apif->host_if_name = NULL; - apif->host_if_index = -1; - - mhash_unset (&apm->if_index_by_host_if_name, host_if_name, p); - - memset (apif, 0, sizeof (*apif)); - pool_put (apm->interfaces, apif); - - return 0; -} - -int -af_packet_set_l4_cksum_offload (u32 sw_if_index, u8 set) -{ - // deprecated ... - return 0; -} - -int -af_packet_dump_ifs (af_packet_if_detail_t ** out_af_packet_ifs) -{ - af_packet_main_t *apm = &af_packet_main; - af_packet_if_t *apif; - af_packet_if_detail_t *r_af_packet_ifs = NULL; - af_packet_if_detail_t *af_packet_if = NULL; - - pool_foreach (apif, apm->interfaces) - { - vec_add2 (r_af_packet_ifs, af_packet_if, 1); - af_packet_if->sw_if_index = apif->sw_if_index; - if (apif->host_if_name) - { - clib_memcpy (af_packet_if->host_if_name, apif->host_if_name, - MIN (ARRAY_LEN (af_packet_if->host_if_name) - 1, - strlen ((const char *) apif->host_if_name))); - } - } - - *out_af_packet_ifs = r_af_packet_ifs; - - return 0; -} - -static clib_error_t * -af_packet_init (vlib_main_t * vm) -{ - af_packet_main_t *apm = &af_packet_main; - vlib_thread_main_t *tm = vlib_get_thread_main (); - - clib_memset (apm, 0, sizeof (af_packet_main_t)); - - mhash_init_vec_string (&apm->if_index_by_host_if_name, sizeof (uword)); - - vec_validate_aligned (apm->rx_buffers, tm->n_vlib_mains - 1, - CLIB_CACHE_LINE_BYTES); - - apm->log_class = vlib_log_register_class ("af_packet", 0); - vlib_log_debug (apm->log_class, "initialized"); - - return 0; -} - -VLIB_INIT_FUNCTION (af_packet_init); - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ diff --git a/src/vnet/devices/af_packet/af_packet.h b/src/vnet/devices/af_packet/af_packet.h deleted file mode 100644 index 7aa5e6d5b9a..00000000000 --- a/src/vnet/devices/af_packet/af_packet.h +++ /dev/null @@ -1,179 +0,0 @@ -/* - *------------------------------------------------------------------ - * af_packet.h - linux kernel packet interface header file - * - * 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 <linux/if_packet.h> - -#include <vppinfra/lock.h> -#include <vlib/log.h> - -typedef struct tpacket_block_desc block_desc_t; -typedef struct tpacket_req tpacket_req_t; -typedef struct tpacket_req3 tpacket_req3_t; -typedef struct tpacket2_hdr tpacket2_hdr_t; -typedef struct tpacket3_hdr tpacket3_hdr_t; - -typedef union _tpacket_req_u -{ - tpacket_req_t req; - tpacket_req3_t req3; -} tpacket_req_u_t; - -typedef enum -{ - AF_PACKET_IF_MODE_ETHERNET = 1, - AF_PACKET_IF_MODE_IP = 2 -} af_packet_if_mode_t; - -typedef enum -{ - AF_PACKET_IF_FLAGS_QDISC_BYPASS = 1, - AF_PACKET_IF_FLAGS_CKSUM_GSO = 2, - AF_PACKET_IF_FLAGS_FANOUT = 4, - AF_PACKET_IF_FLAGS_VERSION_2 = 8, -} af_packet_if_flags_t; - -typedef struct -{ - u32 sw_if_index; - u8 host_if_name[64]; -} af_packet_if_detail_t; - -typedef struct -{ - u8 *ring_start_addr; - u32 ring_size; -} af_packet_ring_t; - -typedef struct -{ - CLIB_CACHE_LINE_ALIGN_MARK (cacheline0); - clib_spinlock_t lockp; - int fd; - union - { - tpacket_req_u_t *rx_req; - tpacket_req_u_t *tx_req; - }; - - union - { - u8 **rx_ring; - u8 **tx_ring; - }; - - union - { - u32 next_rx_block; - u32 next_rx_frame; - u32 next_tx_frame; - }; - - u16 queue_id; - u32 queue_index; - - u32 clib_file_index; - - u32 rx_frame_offset; - u16 num_rx_pkts; - u8 is_rx_pending; - u8 is_tx_pending; - vnet_hw_if_rx_mode mode; -} af_packet_queue_t; - -typedef struct -{ - CLIB_CACHE_LINE_ALIGN_MARK (cacheline0); - u32 hw_if_index; - u32 sw_if_index; - u32 per_interface_next_index; - af_packet_if_mode_t mode; - u8 is_admin_up; - u8 is_cksum_gso_enabled; - u8 version; - af_packet_queue_t *rx_queues; - af_packet_queue_t *tx_queues; - - u8 num_rxqs; - u8 num_txqs; - - u8 *host_if_name; - int host_if_index; - - u32 host_mtu; - u32 dev_instance; - - af_packet_ring_t *rings; - u8 is_qdisc_bypass_enabled; - u8 is_fanout_enabled; -} af_packet_if_t; - -typedef struct -{ - CLIB_CACHE_LINE_ALIGN_MARK (cacheline0); - af_packet_if_t *interfaces; - - u32 polling_count; - /* rx buffer cache */ - u32 **rx_buffers; - - /* hash of host interface names */ - mhash_t if_index_by_host_if_name; - - /** log class */ - vlib_log_class_t log_class; -} af_packet_main_t; - -typedef struct -{ - u8 *host_if_name; - u8 *hw_addr; - u32 rx_frame_size; - u32 tx_frame_size; - u32 rx_frames_per_block; - u32 tx_frames_per_block; - u8 num_rxqs; - u8 num_txqs; - u8 is_v2; - af_packet_if_mode_t mode; - af_packet_if_flags_t flags; - - /* return */ - u32 sw_if_index; -} af_packet_create_if_arg_t; - -extern af_packet_main_t af_packet_main; -extern vnet_device_class_t af_packet_device_class; -extern vlib_node_registration_t af_packet_input_node; - -int af_packet_create_if (af_packet_create_if_arg_t *arg); -int af_packet_delete_if (u8 *host_if_name); -int af_packet_set_l4_cksum_offload (u32 sw_if_index, u8 set); -int af_packet_dump_ifs (af_packet_if_detail_t ** out_af_packet_ifs); - -format_function_t format_af_packet_device_name; - -#define MIN(x,y) (((x)<(y))?(x):(y)) - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ diff --git a/src/vnet/devices/af_packet/af_packet_api.c b/src/vnet/devices/af_packet/af_packet_api.c deleted file mode 100644 index 6ca79f9705e..00000000000 --- a/src/vnet/devices/af_packet/af_packet_api.c +++ /dev/null @@ -1,253 +0,0 @@ -/* - *------------------------------------------------------------------ - * af_packet_api.c - af-packet api - * - * 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/devices/af_packet/af_packet.h> - -#include <vnet/format_fns.h> -#include <vnet/devices/af_packet/af_packet.api_enum.h> -#include <vnet/devices/af_packet/af_packet.api_types.h> - -#define REPLY_MSG_ID_BASE msg_id_base -#include <vlibapi/api_helper_macros.h> - -static u16 msg_id_base; - -static void -vl_api_af_packet_create_t_handler (vl_api_af_packet_create_t * mp) -{ - af_packet_create_if_arg_t _arg, *arg = &_arg; - vl_api_af_packet_create_reply_t *rmp; - int rv = 0; - - clib_memset (arg, 0, sizeof (*arg)); - - arg->host_if_name = format (0, "%s", mp->host_if_name); - vec_add1 (arg->host_if_name, 0); - - arg->hw_addr = mp->use_random_hw_addr ? 0 : mp->hw_addr; - arg->mode = AF_PACKET_IF_MODE_ETHERNET; - // Default flags - arg->flags = AF_PACKET_IF_FLAGS_QDISC_BYPASS | AF_PACKET_IF_FLAGS_CKSUM_GSO; - rv = af_packet_create_if (arg); - - vec_free (arg->host_if_name); - - REPLY_MACRO2 (VL_API_AF_PACKET_CREATE_REPLY, ({ - rmp->sw_if_index = clib_host_to_net_u32 (arg->sw_if_index); - })); -} - -static void -vl_api_af_packet_create_v2_t_handler (vl_api_af_packet_create_v2_t *mp) -{ - af_packet_create_if_arg_t _arg, *arg = &_arg; - vl_api_af_packet_create_v2_reply_t *rmp; - int rv = 0; - - clib_memset (arg, 0, sizeof (*arg)); - - arg->host_if_name = format (0, "%s", mp->host_if_name); - vec_add1 (arg->host_if_name, 0); - - // Default number of rx/tx queue(s) - arg->num_rxqs = 1; - arg->num_txqs = 1; - arg->rx_frame_size = clib_net_to_host_u32 (mp->rx_frame_size); - arg->tx_frame_size = clib_net_to_host_u32 (mp->tx_frame_size); - arg->rx_frames_per_block = clib_net_to_host_u32 (mp->rx_frames_per_block); - arg->tx_frames_per_block = clib_net_to_host_u32 (mp->tx_frames_per_block); - arg->hw_addr = mp->use_random_hw_addr ? 0 : mp->hw_addr; - arg->mode = AF_PACKET_IF_MODE_ETHERNET; - // Default flags - arg->flags = AF_PACKET_IF_FLAGS_QDISC_BYPASS | AF_PACKET_IF_FLAGS_CKSUM_GSO; - - if (mp->num_rx_queues > 1) - arg->num_rxqs = clib_net_to_host_u16 (mp->num_rx_queues); - - rv = af_packet_create_if (arg); - - vec_free (arg->host_if_name); - REPLY_MACRO2 (VL_API_AF_PACKET_CREATE_V2_REPLY, ({ - rmp->sw_if_index = clib_host_to_net_u32 (arg->sw_if_index); - })); -} - -static void -vl_api_af_packet_create_v3_t_handler (vl_api_af_packet_create_v3_t *mp) -{ - af_packet_create_if_arg_t _arg, *arg = &_arg; - vl_api_af_packet_create_v3_reply_t *rmp; - int rv = 0; - - clib_memset (arg, 0, sizeof (*arg)); - - arg->host_if_name = format (0, "%s", mp->host_if_name); - vec_add1 (arg->host_if_name, 0); - - // Default number of rx/tx queue(s) - arg->num_rxqs = 1; - arg->num_txqs = 1; - arg->rx_frame_size = clib_net_to_host_u32 (mp->rx_frame_size); - arg->tx_frame_size = clib_net_to_host_u32 (mp->tx_frame_size); - arg->rx_frames_per_block = clib_net_to_host_u32 (mp->rx_frames_per_block); - arg->tx_frames_per_block = clib_net_to_host_u32 (mp->tx_frames_per_block); - arg->hw_addr = mp->use_random_hw_addr ? 0 : mp->hw_addr; - - switch (clib_net_to_host_u32 (mp->mode)) - { - case AF_PACKET_API_MODE_ETHERNET: - arg->mode = AF_PACKET_IF_MODE_ETHERNET; - break; - case AF_PACKET_API_MODE_IP: - arg->mode = AF_PACKET_IF_MODE_IP; - break; - default: - arg->sw_if_index = ~0; - rv = VNET_ERR_INVALID_VALUE; - goto error; - } - - STATIC_ASSERT (((int) AF_PACKET_API_FLAG_QDISC_BYPASS == - (int) AF_PACKET_IF_FLAGS_QDISC_BYPASS), - "af-packet qdisc-bypass api flag mismatch"); - STATIC_ASSERT ( - ((int) AF_PACKET_API_FLAG_CKSUM_GSO == (int) AF_PACKET_IF_FLAGS_CKSUM_GSO), - "af-packet checksum/gso offload api flag mismatch"); - - STATIC_ASSERT ( - ((int) AF_PACKET_API_FLAG_VERSION_2 == (int) AF_PACKET_IF_FLAGS_VERSION_2), - "af-packet version 2 api flag mismatch"); - - // Default flags - arg->flags = clib_net_to_host_u32 (mp->flags); - - if (clib_net_to_host_u16 (mp->num_rx_queues) > 1) - arg->num_rxqs = clib_net_to_host_u16 (mp->num_rx_queues); - - if (clib_net_to_host_u16 (mp->num_tx_queues) > 1) - arg->num_txqs = clib_net_to_host_u16 (mp->num_tx_queues); - - arg->is_v2 = (arg->flags & AF_PACKET_API_FLAG_VERSION_2) ? 1 : 0; - rv = af_packet_create_if (arg); - -error: - vec_free (arg->host_if_name); - REPLY_MACRO2 (VL_API_AF_PACKET_CREATE_V3_REPLY, ({ - rmp->sw_if_index = clib_host_to_net_u32 (arg->sw_if_index); - })); -} - -static void -vl_api_af_packet_delete_t_handler (vl_api_af_packet_delete_t * mp) -{ - vl_api_af_packet_delete_reply_t *rmp; - int rv = 0; - u8 *host_if_name = NULL; - - host_if_name = format (0, "%s", mp->host_if_name); - vec_add1 (host_if_name, 0); - - rv = af_packet_delete_if (host_if_name); - - vec_free (host_if_name); - - REPLY_MACRO (VL_API_AF_PACKET_DELETE_REPLY); -} - -static void - vl_api_af_packet_set_l4_cksum_offload_t_handler - (vl_api_af_packet_set_l4_cksum_offload_t * mp) -{ - vl_api_af_packet_delete_reply_t *rmp; - int rv = 0; - - rv = af_packet_set_l4_cksum_offload (ntohl (mp->sw_if_index), mp->set); - REPLY_MACRO (VL_API_AF_PACKET_SET_L4_CKSUM_OFFLOAD_REPLY); -} - -static void -af_packet_send_details (vpe_api_main_t * am, - vl_api_registration_t * reg, - af_packet_if_detail_t * af_packet_if, u32 context) -{ - vl_api_af_packet_details_t *mp; - mp = vl_msg_api_alloc (sizeof (*mp)); - clib_memset (mp, 0, sizeof (*mp)); - mp->_vl_msg_id = htons (REPLY_MSG_ID_BASE + VL_API_AF_PACKET_DETAILS); - mp->sw_if_index = htonl (af_packet_if->sw_if_index); - clib_memcpy (mp->host_if_name, af_packet_if->host_if_name, - MIN (ARRAY_LEN (mp->host_if_name) - 1, - strlen ((const char *) af_packet_if->host_if_name))); - - mp->context = context; - vl_api_send_msg (reg, (u8 *) mp); -} - - -static void -vl_api_af_packet_dump_t_handler (vl_api_af_packet_dump_t * mp) -{ - int rv; - vpe_api_main_t *am = &vpe_api_main; - vl_api_registration_t *reg; - af_packet_if_detail_t *out_af_packet_ifs = NULL; - af_packet_if_detail_t *af_packet_if = NULL; - - reg = vl_api_client_index_to_registration (mp->client_index); - if (!reg) - return; - - rv = af_packet_dump_ifs (&out_af_packet_ifs); - if (rv) - return; - - vec_foreach (af_packet_if, out_af_packet_ifs) - { - af_packet_send_details (am, reg, af_packet_if, mp->context); - } - - vec_free (out_af_packet_ifs); -} - -#include <vnet/devices/af_packet/af_packet.api.c> -static clib_error_t * -af_packet_api_hookup (vlib_main_t * vm) -{ - /* - * Set up the (msg_name, crc, message-id) table - */ - REPLY_MSG_ID_BASE = setup_message_id_table (); - - return 0; -} - -VLIB_API_INIT_FUNCTION (af_packet_api_hookup); - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ diff --git a/src/vnet/devices/af_packet/cli.c b/src/vnet/devices/af_packet/cli.c deleted file mode 100644 index d20ef61a09d..00000000000 --- a/src/vnet/devices/af_packet/cli.c +++ /dev/null @@ -1,295 +0,0 @@ -/* - *------------------------------------------------------------------ - * af_packet.c - linux kernel packet interface - * - * 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 <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 <vlib/vlib.h> -#include <vlib/unix/unix.h> -#include <vnet/ip/ip.h> -#include <vnet/ethernet/ethernet.h> - -#include <vnet/devices/af_packet/af_packet.h> - -/** - * @file - * @brief CLI for Host Interface Device Driver. - * - * This file contains the source code for CLI for the host interface. - */ - -static clib_error_t * -af_packet_create_command_fn (vlib_main_t * vm, unformat_input_t * input, - vlib_cli_command_t * cmd) -{ - unformat_input_t _line_input, *line_input = &_line_input; - af_packet_create_if_arg_t _arg, *arg = &_arg; - clib_error_t *error = NULL; - u8 hwaddr[6]; - int r; - - clib_memset (arg, 0, sizeof (*arg)); - - // Default mode - arg->mode = AF_PACKET_IF_MODE_ETHERNET; - - // Default number of rx/tx queue(s) - arg->num_rxqs = 1; - arg->num_txqs = 1; - - // Default flags - arg->flags = AF_PACKET_IF_FLAGS_QDISC_BYPASS | AF_PACKET_IF_FLAGS_CKSUM_GSO; - - /* Get a line of input. */ - 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, "name %s", &arg->host_if_name)) - ; - else if (unformat (line_input, "rx-size %u", &arg->rx_frame_size)) - ; - else if (unformat (line_input, "tx-size %u", &arg->tx_frame_size)) - ; - else if (unformat (line_input, "rx-per-block %u", - &arg->rx_frames_per_block)) - ; - else if (unformat (line_input, "tx-per-block %u", - &arg->tx_frames_per_block)) - ; - else if (unformat (line_input, "num-rx-queues %u", &arg->num_rxqs)) - ; - else if (unformat (line_input, "num-tx-queues %u", &arg->num_txqs)) - ; - else if (unformat (line_input, "qdisc-bypass-disable")) - arg->flags &= ~AF_PACKET_IF_FLAGS_QDISC_BYPASS; - else if (unformat (line_input, "cksum-gso-disable")) - arg->flags &= ~AF_PACKET_IF_FLAGS_CKSUM_GSO; - else if (unformat (line_input, "mode ip")) - arg->mode = AF_PACKET_IF_MODE_IP; - else if (unformat (line_input, "v2")) - arg->is_v2 = 1; - else if (unformat (line_input, "hw-addr %U", unformat_ethernet_address, - hwaddr)) - arg->hw_addr = hwaddr; - else - { - error = clib_error_return (0, "unknown input `%U'", - format_unformat_error, line_input); - goto done; - } - } - - if (arg->host_if_name == NULL) - { - error = clib_error_return (0, "missing host interface name"); - goto done; - } - - r = af_packet_create_if (arg); - - if (r == VNET_API_ERROR_SYSCALL_ERROR_1) - { - error = clib_error_return (0, "%s (errno %d)", strerror (errno), errno); - goto done; - } - - if (r == VNET_API_ERROR_INVALID_INTERFACE) - { - error = clib_error_return (0, "Invalid interface name"); - goto done; - } - - if (r == VNET_API_ERROR_SUBIF_ALREADY_EXISTS) - { - error = clib_error_return (0, "Interface already exists"); - goto done; - } - - vlib_cli_output (vm, "%U\n", format_vnet_sw_if_index_name, vnet_get_main (), - arg->sw_if_index); - -done: - vec_free (arg->host_if_name); - unformat_free (line_input); - - return error; -} - -/*? - * Create a host interface that will attach to a linux AF_PACKET - * interface, one side of a veth pair. The veth pair must already - * exist. Once created, a new host interface will exist in VPP - * with the name '<em>host-<ifname></em>', where '<em><ifname></em>' - * is the name of the specified veth pair. Use the - * '<em>show interface</em>' command to display host interface details. - * - * This command has the following optional parameters: - * - * - <b>hw-addr <mac-addr></b> - Optional ethernet address, can be in either - * X:X:X:X:X:X unix or X.X.X cisco format. - * - * @cliexpar - * Example of how to create a host interface tied to one side of an - * existing linux veth pair named vpp1: - * @cliexstart{create host-interface name vpp1} - * host-vpp1 - * @cliexend - * Once the host interface is created, enable the interface using: - * @cliexcmd{set interface state host-vpp1 up} -?*/ -VLIB_CLI_COMMAND (af_packet_create_command, static) = { - .path = "create host-interface", - .short_help = "create host-interface [v2] name <ifname> [num-rx-queues <n>] " - "[num-tx-queues <n>] [hw-addr <mac-addr>] [mode ip] " - "[qdisc-bypass-disable] [cksum-gso-disable]", - .function = af_packet_create_command_fn, -}; - -static clib_error_t * -af_packet_delete_command_fn (vlib_main_t * vm, unformat_input_t * input, - vlib_cli_command_t * cmd) -{ - unformat_input_t _line_input, *line_input = &_line_input; - u8 *host_if_name = NULL; - clib_error_t *error = NULL; - - /* Get a line of input. */ - 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, "name %s", &host_if_name)) - ; - else - { - error = clib_error_return (0, "unknown input `%U'", - format_unformat_error, line_input); - goto done; - } - } - - if (host_if_name == NULL) - { - error = clib_error_return (0, "missing host interface name"); - goto done; - } - - af_packet_delete_if (host_if_name); - -done: - vec_free (host_if_name); - unformat_free (line_input); - - return error; -} - -/*? - * Delete a host interface. Use the linux interface name to identify - * the host interface to be deleted. In VPP, host interfaces are - * named as '<em>host-<ifname></em>', where '<em><ifname></em>' - * is the name of the linux interface. - * - * @cliexpar - * Example of how to delete a host interface named host-vpp1: - * @cliexcmd{delete host-interface name vpp1} -?*/ -VLIB_CLI_COMMAND (af_packet_delete_command, static) = { - .path = "delete host-interface", - .short_help = "delete host-interface name <ifname>", - .function = af_packet_delete_command_fn, -}; - -static clib_error_t * -af_packet_set_l4_cksum_offload_command_fn (vlib_main_t * vm, - unformat_input_t * input, - vlib_cli_command_t * cmd) -{ - unformat_input_t _line_input, *line_input = &_line_input; - u8 set = 0; - clib_error_t *error = NULL; - vnet_main_t *vnm = vnet_get_main (); - u32 sw_if_index; - - 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, "%U", unformat_vnet_sw_interface, vnm, - &sw_if_index)) - ; - else if (unformat (line_input, "on")) - set = 1; - else if (unformat (line_input, "off")) - set = 0; - else - { - error = clib_error_return (0, "unknown input '%U'", - format_unformat_error, line_input); - goto done; - } - } - - if (af_packet_set_l4_cksum_offload (sw_if_index, set) < 0) - error = clib_error_return (0, "not an af_packet interface"); - -done: - unformat_free (line_input); - return error; -} - -/*? - * Set TCP/UDP offload checksum calculation. Use interface - * name to identify the interface to set TCP/UDP offload checksum - * calculation. - * - * @cliexpar - * Example of how to set TCP/UDP offload checksum calculation on host-vpp0: - * @cliexcmd{set host-interface l4-cksum-offload host-vpp0 off} - * @cliexcmd{set host-interface l4-cksum-offload host-vpp0 on} -?*/ -VLIB_CLI_COMMAND (af_packet_set_l4_cksum_offload_command, static) = { - .path = "set host-interface l4-cksum-offload", - .short_help = "set host-interface l4-cksum-offload <host-if-name> <on|off>", - .function = af_packet_set_l4_cksum_offload_command_fn, -}; - -clib_error_t * -af_packet_cli_init (vlib_main_t * vm) -{ - return 0; -} - -VLIB_INIT_FUNCTION (af_packet_cli_init); - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ diff --git a/src/vnet/devices/af_packet/device.c b/src/vnet/devices/af_packet/device.c deleted file mode 100644 index 17291f76b71..00000000000 --- a/src/vnet/devices/af_packet/device.c +++ /dev/null @@ -1,836 +0,0 @@ -/* - *------------------------------------------------------------------ - * af_packet.c - linux kernel packet interface - * - * 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 <linux/if_packet.h> -#include <sys/socket.h> -#include <sys/ioctl.h> -#include <net/if.h> -#include <net/if_arp.h> - -#include <vlib/vlib.h> -#include <vlib/unix/unix.h> -#include <vnet/ip/ip.h> -#include <vnet/ethernet/ethernet.h> -#include <vnet/ip/ip4_packet.h> -#include <vnet/ip/ip6_packet.h> -#include <vnet/ip/ip_psh_cksum.h> -#include <vnet/tcp/tcp_packet.h> -#include <vnet/udp/udp_packet.h> - -#include <vnet/devices/af_packet/af_packet.h> -#include <vnet/devices/virtio/virtio_std.h> - -#define foreach_af_packet_tx_func_error \ -_(FRAME_NOT_READY, "tx frame not ready") \ -_(TXRING_EAGAIN, "tx sendto temporary failure") \ -_(TXRING_FATAL, "tx sendto fatal failure") \ -_(TXRING_OVERRUN, "tx ring overrun") - -typedef enum -{ -#define _(f,s) AF_PACKET_TX_ERROR_##f, - foreach_af_packet_tx_func_error -#undef _ - AF_PACKET_TX_N_ERROR, -} af_packet_tx_func_error_t; - -static char *af_packet_tx_func_error_strings[] = { -#define _(n,s) s, - foreach_af_packet_tx_func_error -#undef _ -}; - -typedef struct -{ - u32 buffer_index; - u32 hw_if_index; - u16 queue_id; - u8 is_v2; - union - { - tpacket2_hdr_t tph2; - tpacket3_hdr_t tph3; - }; - vnet_virtio_net_hdr_t vnet_hdr; - vlib_buffer_t buffer; -} af_packet_tx_trace_t; - -#ifndef CLIB_MARCH_VARIANT -u8 * -format_af_packet_device_name (u8 * s, va_list * args) -{ - u32 i = va_arg (*args, u32); - af_packet_main_t *apm = &af_packet_main; - af_packet_if_t *apif = pool_elt_at_index (apm->interfaces, i); - - s = format (s, "host-%s", apif->host_if_name); - return s; -} -#endif /* CLIB_MARCH_VARIANT */ - -static u8 * -format_af_packet_device (u8 * s, va_list * args) -{ - u32 dev_instance = va_arg (*args, u32); - u32 indent = format_get_indent (s); - int __clib_unused verbose = va_arg (*args, int); - - af_packet_main_t *apm = &af_packet_main; - af_packet_if_t *apif = pool_elt_at_index (apm->interfaces, dev_instance); - af_packet_queue_t *rx_queue = 0; - af_packet_queue_t *tx_queue = 0; - - s = format (s, "Linux PACKET socket interface %s", - (apif->version == TPACKET_V2) ? "v2" : "v3"); - s = format (s, "\n%UFEATURES:", format_white_space, indent); - if (apif->is_qdisc_bypass_enabled) - s = format (s, "\n%Uqdisc-bpass-enabled", format_white_space, indent + 2); - if (apif->is_cksum_gso_enabled) - s = format (s, "\n%Ucksum-gso-enabled", format_white_space, indent + 2); - if (apif->is_fanout_enabled) - s = format (s, "\n%Ufanout-enabled", format_white_space, indent + 2); - - vec_foreach (rx_queue, apif->rx_queues) - { - u32 rx_block_size = rx_queue->rx_req->req.tp_block_size; - u32 rx_frame_size = rx_queue->rx_req->req.tp_frame_size; - u32 rx_frame_nr = rx_queue->rx_req->req.tp_frame_nr; - u32 rx_block_nr = rx_queue->rx_req->req.tp_block_nr; - - s = format (s, "\n%URX Queue %u:", format_white_space, indent, - rx_queue->queue_id); - s = format (s, "\n%Ublock size:%d nr:%d frame size:%d nr:%d", - format_white_space, indent + 2, rx_block_size, rx_block_nr, - rx_frame_size, rx_frame_nr); - if (apif->version == TPACKET_V2) - s = format (s, " next frame:%d", rx_queue->next_rx_frame); - else - s = format (s, " next block:%d", rx_queue->next_rx_block); - if (rx_queue->is_rx_pending) - { - s = format ( - s, "\n%UPending Request: num-rx-pkts:%d next-frame-offset:%d", - format_white_space, indent + 2, rx_queue->num_rx_pkts, - rx_queue->rx_frame_offset); - } - } - - vec_foreach (tx_queue, apif->tx_queues) - { - clib_spinlock_lock (&tx_queue->lockp); - u32 tx_block_sz = tx_queue->tx_req->req.tp_block_size; - u32 tx_frame_sz = tx_queue->tx_req->req.tp_frame_size; - u32 tx_frame_nr = tx_queue->tx_req->req.tp_frame_nr; - u32 tx_block_nr = tx_queue->tx_req->req.tp_block_nr; - int block = 0; - int n_send_req = 0, n_avail = 0, n_sending = 0, n_tot = 0, n_wrong = 0; - u8 *tx_block_start = tx_queue->tx_ring[block]; - u32 tx_frame = tx_queue->next_tx_frame; - tpacket3_hdr_t *tph3; - tpacket2_hdr_t *tph2; - - s = format (s, "\n%UTX Queue %u:", format_white_space, indent, - tx_queue->queue_id); - s = format (s, "\n%Ublock size:%d nr:%d frame size:%d nr:%d", - format_white_space, indent + 2, tx_block_sz, tx_block_nr, - tx_frame_sz, tx_frame_nr); - s = format (s, " next frame:%d", tx_queue->next_tx_frame); - if (apif->version & TPACKET_V3) - do - { - tph3 = - (tpacket3_hdr_t *) (tx_block_start + tx_frame * tx_frame_sz); - tx_frame = (tx_frame + 1) % tx_frame_nr; - if (tph3->tp_status == 0) - n_avail++; - else if (tph3->tp_status & TP_STATUS_SEND_REQUEST) - n_send_req++; - else if (tph3->tp_status & TP_STATUS_SENDING) - n_sending++; - else - n_wrong++; - n_tot++; - } - while (tx_frame != tx_queue->next_tx_frame); - else - do - { - tph2 = - (tpacket2_hdr_t *) (tx_block_start + tx_frame * tx_frame_sz); - tx_frame = (tx_frame + 1) % tx_frame_nr; - if (tph2->tp_status == 0) - n_avail++; - else if (tph2->tp_status & TP_STATUS_SEND_REQUEST) - n_send_req++; - else if (tph2->tp_status & TP_STATUS_SENDING) - n_sending++; - else - n_wrong++; - n_tot++; - } - while (tx_frame != tx_queue->next_tx_frame); - s = - format (s, "\n%Uavailable:%d request:%d sending:%d wrong:%d total:%d", - format_white_space, indent + 2, n_avail, n_send_req, n_sending, - n_wrong, n_tot); - clib_spinlock_unlock (&tx_queue->lockp); - } - return s; -} - -static u8 * -format_af_packet_tx_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 *); - af_packet_tx_trace_t *t = va_arg (*va, af_packet_tx_trace_t *); - u32 indent = format_get_indent (s); - - s = format (s, "af_packet: hw_if_index %u tx-queue %u", t->hw_if_index, - t->queue_id); - - if (t->is_v2) - { - s = format ( - s, - "\n%Utpacket2_hdr:\n%Ustatus 0x%x len %u snaplen %u mac %u net %u" - "\n%Usec 0x%x nsec 0x%x vlan %U" -#ifdef TP_STATUS_VLAN_TPID_VALID - " vlan_tpid %u" -#endif - , - format_white_space, indent + 2, format_white_space, indent + 4, - t->tph2.tp_status, t->tph2.tp_len, t->tph2.tp_snaplen, t->tph2.tp_mac, - t->tph2.tp_net, format_white_space, indent + 4, t->tph2.tp_sec, - t->tph2.tp_nsec, format_ethernet_vlan_tci, t->tph2.tp_vlan_tci -#ifdef TP_STATUS_VLAN_TPID_VALID - , - t->tph2.tp_vlan_tpid -#endif - ); - } - else - { - s = format ( - s, - "\n%Utpacket3_hdr:\n%Ustatus 0x%x len %u snaplen %u mac %u net %u" - "\n%Usec 0x%x nsec 0x%x vlan %U" -#ifdef TP_STATUS_VLAN_TPID_VALID - " vlan_tpid %u" -#endif - , - format_white_space, indent + 2, format_white_space, indent + 4, - t->tph3.tp_status, t->tph3.tp_len, t->tph3.tp_snaplen, t->tph3.tp_mac, - t->tph3.tp_net, format_white_space, indent + 4, t->tph3.tp_sec, - t->tph3.tp_nsec, format_ethernet_vlan_tci, t->tph3.hv1.tp_vlan_tci -#ifdef TP_STATUS_VLAN_TPID_VALID - , - t->tph3.hv1.tp_vlan_tpid -#endif - ); - } - s = format (s, - "\n%Uvnet-hdr:\n%Uflags 0x%02x gso_type 0x%02x hdr_len %u" - "\n%Ugso_size %u csum_start %u csum_offset %u", - format_white_space, indent + 2, format_white_space, indent + 4, - t->vnet_hdr.flags, t->vnet_hdr.gso_type, t->vnet_hdr.hdr_len, - format_white_space, indent + 4, t->vnet_hdr.gso_size, - t->vnet_hdr.csum_start, t->vnet_hdr.csum_offset); - - s = format (s, "\n%Ubuffer 0x%x:\n%U%U", format_white_space, indent + 2, - t->buffer_index, format_white_space, indent + 4, - format_vnet_buffer_no_chain, &t->buffer); - s = format (s, "\n%U%U", format_white_space, indent + 2, - format_ethernet_header_with_length, t->buffer.pre_data, - sizeof (t->buffer.pre_data)); - return s; -} - -static void -af_packet_tx_trace (vlib_main_t *vm, vlib_node_runtime_t *node, - vlib_buffer_t *b0, u32 bi, void *tph, - vnet_virtio_net_hdr_t *vnet_hdr, u32 hw_if_index, - u16 queue_id, u8 is_v2) -{ - af_packet_tx_trace_t *t; - t = vlib_add_trace (vm, node, b0, sizeof (t[0])); - t->hw_if_index = hw_if_index; - t->queue_id = queue_id; - t->buffer_index = bi; - t->is_v2 = is_v2; - - if (is_v2) - clib_memcpy_fast (&t->tph2, (tpacket2_hdr_t *) tph, - sizeof (tpacket2_hdr_t)); - else - clib_memcpy_fast (&t->tph3, (tpacket3_hdr_t *) tph, - sizeof (tpacket3_hdr_t)); - clib_memcpy_fast (&t->vnet_hdr, vnet_hdr, sizeof (*vnet_hdr)); - clib_memcpy_fast (&t->buffer, b0, sizeof (*b0) - sizeof (b0->pre_data)); - clib_memcpy_fast (t->buffer.pre_data, vlib_buffer_get_current (b0), - sizeof (t->buffer.pre_data)); -} - -static_always_inline void -fill_gso_offload (vlib_buffer_t *b0, vnet_virtio_net_hdr_t *vnet_hdr) -{ - vnet_buffer_oflags_t oflags = vnet_buffer (b0)->oflags; - i16 l4_hdr_offset = vnet_buffer (b0)->l4_hdr_offset - b0->current_data; - if (b0->flags & VNET_BUFFER_F_IS_IP4) - { - ip4_header_t *ip4; - vnet_hdr->gso_type = VIRTIO_NET_HDR_GSO_TCPV4; - vnet_hdr->gso_size = vnet_buffer2 (b0)->gso_size; - vnet_hdr->hdr_len = l4_hdr_offset + vnet_buffer2 (b0)->gso_l4_hdr_sz; - vnet_hdr->flags = VIRTIO_NET_HDR_F_NEEDS_CSUM; - vnet_hdr->csum_start = l4_hdr_offset; // 0x22; - vnet_hdr->csum_offset = STRUCT_OFFSET_OF (tcp_header_t, checksum); - ip4 = (ip4_header_t *) (b0->data + vnet_buffer (b0)->l3_hdr_offset); - if (oflags & VNET_BUFFER_OFFLOAD_F_IP_CKSUM) - ip4->checksum = ip4_header_checksum (ip4); - tcp_header_t *tcp = - (tcp_header_t *) (b0->data + vnet_buffer (b0)->l4_hdr_offset); - tcp->checksum = ip4_pseudo_header_cksum (ip4); - } - else if (b0->flags & VNET_BUFFER_F_IS_IP6) - { - ip6_header_t *ip6; - vnet_hdr->gso_type = VIRTIO_NET_HDR_GSO_TCPV6; - vnet_hdr->gso_size = vnet_buffer2 (b0)->gso_size; - vnet_hdr->hdr_len = l4_hdr_offset + vnet_buffer2 (b0)->gso_l4_hdr_sz; - vnet_hdr->flags = VIRTIO_NET_HDR_F_NEEDS_CSUM; - vnet_hdr->csum_start = l4_hdr_offset; // 0x36; - vnet_hdr->csum_offset = STRUCT_OFFSET_OF (tcp_header_t, checksum); - ip6 = (ip6_header_t *) (b0->data + vnet_buffer (b0)->l3_hdr_offset); - tcp_header_t *tcp = - (tcp_header_t *) (b0->data + vnet_buffer (b0)->l4_hdr_offset); - tcp->checksum = ip6_pseudo_header_cksum (ip6); - } -} - -static_always_inline void -fill_cksum_offload (vlib_buffer_t *b0, vnet_virtio_net_hdr_t *vnet_hdr) -{ - vnet_buffer_oflags_t oflags = vnet_buffer (b0)->oflags; - i16 l4_hdr_offset = vnet_buffer (b0)->l4_hdr_offset - b0->current_data; - if (b0->flags & VNET_BUFFER_F_IS_IP4) - { - ip4_header_t *ip4; - ip4 = (ip4_header_t *) (b0->data + vnet_buffer (b0)->l3_hdr_offset); - if (oflags & VNET_BUFFER_OFFLOAD_F_IP_CKSUM) - ip4->checksum = ip4_header_checksum (ip4); - vnet_hdr->flags = VIRTIO_NET_HDR_F_NEEDS_CSUM; - vnet_hdr->csum_start = l4_hdr_offset; - if (oflags & VNET_BUFFER_OFFLOAD_F_TCP_CKSUM) - { - tcp_header_t *tcp = - (tcp_header_t *) (b0->data + vnet_buffer (b0)->l4_hdr_offset); - tcp->checksum = ip4_pseudo_header_cksum (ip4); - vnet_hdr->csum_offset = STRUCT_OFFSET_OF (tcp_header_t, checksum); - } - else if (oflags & VNET_BUFFER_OFFLOAD_F_UDP_CKSUM) - { - udp_header_t *udp = - (udp_header_t *) (b0->data + vnet_buffer (b0)->l4_hdr_offset); - udp->checksum = ip4_pseudo_header_cksum (ip4); - vnet_hdr->csum_offset = STRUCT_OFFSET_OF (udp_header_t, checksum); - } - } - else if (b0->flags & VNET_BUFFER_F_IS_IP6) - { - ip6_header_t *ip6; - vnet_hdr->flags = VIRTIO_NET_HDR_F_NEEDS_CSUM; - vnet_hdr->csum_start = l4_hdr_offset; - ip6 = (ip6_header_t *) (b0->data + vnet_buffer (b0)->l3_hdr_offset); - if (oflags & VNET_BUFFER_OFFLOAD_F_TCP_CKSUM) - { - tcp_header_t *tcp = - (tcp_header_t *) (b0->data + vnet_buffer (b0)->l4_hdr_offset); - tcp->checksum = ip6_pseudo_header_cksum (ip6); - vnet_hdr->csum_offset = STRUCT_OFFSET_OF (tcp_header_t, checksum); - } - else if (oflags & VNET_BUFFER_OFFLOAD_F_UDP_CKSUM) - { - udp_header_t *udp = - (udp_header_t *) (b0->data + vnet_buffer (b0)->l4_hdr_offset); - udp->checksum = ip6_pseudo_header_cksum (ip6); - vnet_hdr->csum_offset = STRUCT_OFFSET_OF (udp_header_t, checksum); - } - } -} - -VNET_DEVICE_CLASS_TX_FN (af_packet_device_class) (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * frame) -{ - af_packet_main_t *apm = &af_packet_main; - vnet_hw_if_tx_frame_t *tf = vlib_frame_scalar_args (frame); - u32 *buffers = vlib_frame_vector_args (frame); - u32 n_left = frame->n_vectors; - u32 n_sent = 0; - vnet_interface_output_runtime_t *rd = (void *) node->runtime_data; - af_packet_if_t *apif = - pool_elt_at_index (apm->interfaces, rd->dev_instance); - u16 queue_id = tf->queue_id; - af_packet_queue_t *tx_queue = vec_elt_at_index (apif->tx_queues, queue_id); - u32 block = 0, frame_size = 0, frame_num = 0, tx_frame = 0; - u8 *block_start = 0; - tpacket3_hdr_t *tph3 = 0; - tpacket2_hdr_t *tph2 = 0; - u32 frame_not_ready = 0; - u8 is_cksum_gso_enabled = (apif->is_cksum_gso_enabled == 1) ? 1 : 0; - u32 tpacket_align = 0; - u8 is_v2 = (apif->version == TPACKET_V2) ? 1 : 0; - - if (tf->shared_queue) - clib_spinlock_lock (&tx_queue->lockp); - - frame_size = tx_queue->tx_req->req.tp_frame_size; - frame_num = tx_queue->tx_req->req.tp_frame_nr; - block_start = tx_queue->tx_ring[block]; - tx_frame = tx_queue->next_tx_frame; - if (is_v2) - { - tpacket_align = TPACKET_ALIGN (sizeof (tpacket2_hdr_t)); - while (n_left) - { - u32 len; - vnet_virtio_net_hdr_t *vnet_hdr = 0; - u32 offset = 0; - vlib_buffer_t *b0 = 0, *b0_first = 0; - u32 bi, bi_first; - - bi = bi_first = buffers[0]; - n_left--; - buffers++; - - tph2 = (tpacket2_hdr_t *) (block_start + tx_frame * frame_size); - if (PREDICT_FALSE (tph2->tp_status & - (TP_STATUS_SEND_REQUEST | TP_STATUS_SENDING))) - { - frame_not_ready++; - goto nextv2; - } - - b0_first = b0 = vlib_get_buffer (vm, bi); - - if (PREDICT_TRUE (is_cksum_gso_enabled)) - { - vnet_hdr = - (vnet_virtio_net_hdr_t *) ((u8 *) tph2 + tpacket_align); - - clib_memset_u8 (vnet_hdr, 0, sizeof (vnet_virtio_net_hdr_t)); - offset = sizeof (vnet_virtio_net_hdr_t); - - if (b0->flags & VNET_BUFFER_F_GSO) - fill_gso_offload (b0, vnet_hdr); - else if (b0->flags & VNET_BUFFER_F_OFFLOAD) - fill_cksum_offload (b0, vnet_hdr); - } - - len = b0->current_length; - clib_memcpy_fast ((u8 *) tph2 + tpacket_align + offset, - vlib_buffer_get_current (b0), len); - offset += len; - - while (b0->flags & VLIB_BUFFER_NEXT_PRESENT) - { - b0 = vlib_get_buffer (vm, b0->next_buffer); - len = b0->current_length; - clib_memcpy_fast ((u8 *) tph2 + tpacket_align + offset, - vlib_buffer_get_current (b0), len); - offset += len; - } - - tph2->tp_len = tph2->tp_snaplen = offset; - tph2->tp_status = TP_STATUS_SEND_REQUEST; - n_sent++; - - if (PREDICT_FALSE (b0_first->flags & VLIB_BUFFER_IS_TRACED)) - { - if (PREDICT_TRUE (is_cksum_gso_enabled)) - af_packet_tx_trace (vm, node, b0_first, bi_first, tph2, - vnet_hdr, apif->hw_if_index, queue_id, 1); - else - { - vnet_virtio_net_hdr_t vnet_hdr2 = {}; - af_packet_tx_trace (vm, node, b0_first, bi_first, tph2, - &vnet_hdr2, apif->hw_if_index, queue_id, - 1); - } - } - tx_frame = (tx_frame + 1) % frame_num; - - nextv2: - /* check if we've exhausted the ring */ - if (PREDICT_FALSE (frame_not_ready + n_sent == frame_num)) - break; - } - } - else - { - tpacket_align = TPACKET_ALIGN (sizeof (tpacket3_hdr_t)); - - while (n_left) - { - u32 len; - vnet_virtio_net_hdr_t *vnet_hdr = 0; - u32 offset = 0; - vlib_buffer_t *b0 = 0, *b0_first = 0; - u32 bi, bi_first; - - bi = bi_first = buffers[0]; - n_left--; - buffers++; - - tph3 = (tpacket3_hdr_t *) (block_start + tx_frame * frame_size); - if (PREDICT_FALSE (tph3->tp_status & - (TP_STATUS_SEND_REQUEST | TP_STATUS_SENDING))) - { - frame_not_ready++; - goto nextv3; - } - - b0_first = b0 = vlib_get_buffer (vm, bi); - - if (PREDICT_TRUE (is_cksum_gso_enabled)) - { - vnet_hdr = - (vnet_virtio_net_hdr_t *) ((u8 *) tph3 + tpacket_align); - - clib_memset_u8 (vnet_hdr, 0, sizeof (vnet_virtio_net_hdr_t)); - offset = sizeof (vnet_virtio_net_hdr_t); - - if (b0->flags & VNET_BUFFER_F_GSO) - fill_gso_offload (b0, vnet_hdr); - else if (b0->flags & VNET_BUFFER_F_OFFLOAD) - fill_cksum_offload (b0, vnet_hdr); - } - - len = b0->current_length; - clib_memcpy_fast ((u8 *) tph3 + tpacket_align + offset, - vlib_buffer_get_current (b0), len); - offset += len; - - while (b0->flags & VLIB_BUFFER_NEXT_PRESENT) - { - b0 = vlib_get_buffer (vm, b0->next_buffer); - len = b0->current_length; - clib_memcpy_fast ((u8 *) tph3 + tpacket_align + offset, - vlib_buffer_get_current (b0), len); - offset += len; - } - - tph3->tp_len = tph3->tp_snaplen = offset; - tph3->tp_status = TP_STATUS_SEND_REQUEST; - n_sent++; - - if (PREDICT_FALSE (b0_first->flags & VLIB_BUFFER_IS_TRACED)) - { - if (PREDICT_TRUE (is_cksum_gso_enabled)) - af_packet_tx_trace (vm, node, b0_first, bi_first, tph3, - vnet_hdr, apif->hw_if_index, queue_id, 0); - else - { - vnet_virtio_net_hdr_t vnet_hdr2 = {}; - af_packet_tx_trace (vm, node, b0_first, bi_first, tph3, - &vnet_hdr2, apif->hw_if_index, queue_id, - 0); - } - } - tx_frame = (tx_frame + 1) % frame_num; - - nextv3: - /* check if we've exhausted the ring */ - if (PREDICT_FALSE (frame_not_ready + n_sent == frame_num)) - break; - } - } - CLIB_MEMORY_BARRIER (); - - if (PREDICT_TRUE (n_sent || tx_queue->is_tx_pending)) - { - tx_queue->next_tx_frame = tx_frame; - tx_queue->is_tx_pending = 0; - - if (PREDICT_FALSE ( - sendto (tx_queue->fd, NULL, 0, MSG_DONTWAIT, NULL, 0) == -1)) - { - /* Uh-oh, drop & move on, but count whether it was fatal or not. - * Note that we have no reliable way to properly determine the - * disposition of the packets we just enqueued for delivery. - */ - uword counter; - - if (unix_error_is_fatal (errno)) - { - counter = AF_PACKET_TX_ERROR_TXRING_FATAL; - } - else - { - counter = AF_PACKET_TX_ERROR_TXRING_EAGAIN; - /* non-fatal error: kick again next time - * note that you could still end up in a deadlock: if you do not - * try to send new packets (ie reschedule this tx node), eg. - * because your peer is waiting for the unsent packets to reply - * to you but your waiting for its reply etc., you are not going - * to kick again, and everybody is waiting for the other to talk - * 1st... */ - tx_queue->is_tx_pending = 1; - } - - vlib_error_count (vm, node->node_index, counter, 1); - } - } - - if (tf->shared_queue) - clib_spinlock_unlock (&tx_queue->lockp); - - if (PREDICT_FALSE (frame_not_ready)) - vlib_error_count (vm, node->node_index, - AF_PACKET_TX_ERROR_FRAME_NOT_READY, frame_not_ready); - - if (PREDICT_FALSE (frame_not_ready + n_sent == frame_num)) - vlib_error_count (vm, node->node_index, AF_PACKET_TX_ERROR_TXRING_OVERRUN, - n_left); - - vlib_buffer_free (vm, vlib_frame_vector_args (frame), frame->n_vectors); - return frame->n_vectors; -} - -static void -af_packet_set_interface_next_node (vnet_main_t * vnm, u32 hw_if_index, - u32 node_index) -{ - af_packet_main_t *apm = &af_packet_main; - vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, hw_if_index); - af_packet_if_t *apif = - pool_elt_at_index (apm->interfaces, hw->dev_instance); - - /* Shut off redirection */ - if (node_index == ~0) - { - apif->per_interface_next_index = node_index; - return; - } - - apif->per_interface_next_index = - vlib_node_add_next (vlib_get_main (), af_packet_input_node.index, - node_index); -} - -static void -af_packet_clear_hw_interface_counters (u32 instance) -{ - /* Nothing for now */ -} - -static clib_error_t * -af_packet_interface_admin_up_down (vnet_main_t * vnm, u32 hw_if_index, - u32 flags) -{ - af_packet_main_t *apm = &af_packet_main; - vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, hw_if_index); - af_packet_if_t *apif = - pool_elt_at_index (apm->interfaces, hw->dev_instance); - u32 hw_flags; - int rv, fd = socket (AF_UNIX, SOCK_DGRAM, 0); - struct ifreq ifr; - - if (0 > fd) - { - vlib_log_warn (apm->log_class, "af_packet_%s could not open socket", - apif->host_if_name); - return 0; - } - - /* if interface is a bridge ignore */ - if (apif->host_if_index < 0) - goto error; /* no error */ - - /* use host_if_index in case host name has changed */ - ifr.ifr_ifindex = apif->host_if_index; - if ((rv = ioctl (fd, SIOCGIFNAME, &ifr)) < 0) - { - vlib_log_warn (apm->log_class, - "af_packet_%s ioctl could not retrieve eth name", - apif->host_if_name); - goto error; - } - - apif->is_admin_up = (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) != 0; - - if ((rv = ioctl (fd, SIOCGIFFLAGS, &ifr)) < 0) - { - vlib_log_warn (apm->log_class, "af_packet_%s error: %d", - apif->is_admin_up ? "up" : "down", rv); - goto error; - } - - if (apif->is_admin_up) - { - hw_flags = VNET_HW_INTERFACE_FLAG_LINK_UP; - ifr.ifr_flags |= IFF_UP; - } - else - { - hw_flags = 0; - ifr.ifr_flags &= ~IFF_UP; - } - - if ((rv = ioctl (fd, SIOCSIFFLAGS, &ifr)) < 0) - { - vlib_log_warn (apm->log_class, "af_packet_%s error: %d", - apif->is_admin_up ? "up" : "down", rv); - goto error; - } - - vnet_hw_interface_set_flags (vnm, hw_if_index, hw_flags); - -error: - if (0 <= fd) - close (fd); - - return 0; /* no error */ -} - -static clib_error_t * -af_packet_subif_add_del_function (vnet_main_t * vnm, - u32 hw_if_index, - struct vnet_sw_interface_t *st, int is_add) -{ - /* Nothing for now */ - return 0; -} - -static clib_error_t *af_packet_set_mac_address_function - (struct vnet_hw_interface_t *hi, const u8 * old_address, const u8 * address) -{ - af_packet_main_t *apm = &af_packet_main; - af_packet_if_t *apif = - pool_elt_at_index (apm->interfaces, hi->dev_instance); - int rv, fd; - struct ifreq ifr; - - if (apif->mode == AF_PACKET_IF_MODE_IP) - { - vlib_log_warn (apm->log_class, "af_packet_%s interface is in IP mode", - apif->host_if_name); - return clib_error_return (0, - " MAC update failed, interface is in IP mode"); - } - - fd = socket (AF_UNIX, SOCK_DGRAM, 0); - if (0 > fd) - { - vlib_log_warn (apm->log_class, "af_packet_%s could not open socket", - apif->host_if_name); - return 0; - } - - /* if interface is a bridge ignore */ - if (apif->host_if_index < 0) - goto error; /* no error */ - - /* use host_if_index in case host name has changed */ - ifr.ifr_ifindex = apif->host_if_index; - if ((rv = ioctl (fd, SIOCGIFNAME, &ifr)) < 0) - { - vlib_log_warn - (apm->log_class, - "af_packet_%s ioctl could not retrieve eth name, error: %d", - apif->host_if_name, rv); - goto error; - } - - clib_memcpy (ifr.ifr_hwaddr.sa_data, address, 6); - ifr.ifr_hwaddr.sa_family = ARPHRD_ETHER; - - if ((rv = ioctl (fd, SIOCSIFHWADDR, &ifr)) < 0) - { - vlib_log_warn (apm->log_class, - "af_packet_%s ioctl could not set mac, error: %d", - apif->host_if_name, rv); - goto error; - } - -error: - - if (0 <= fd) - close (fd); - - return 0; /* no error */ -} - -static clib_error_t * -af_packet_interface_rx_mode_change (vnet_main_t *vnm, u32 hw_if_index, u32 qid, - vnet_hw_if_rx_mode mode) -{ - af_packet_main_t *apm = &af_packet_main; - vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, hw_if_index); - af_packet_if_t *apif; - - apif = vec_elt_at_index (apm->interfaces, hw->dev_instance); - - if (mode == VNET_HW_IF_RX_MODE_ADAPTIVE) - { - vlib_log_err (apm->log_class, - "af_packet_%s adaptive mode is not supported", - apif->host_if_name); - return clib_error_return ( - 0, "af_packet_%s adaptive mode is not supported", apif->host_if_name); - } - - af_packet_queue_t *rx_queue = vec_elt_at_index (apif->rx_queues, qid); - - if (rx_queue->mode != mode) - { - rx_queue->mode = mode; - - if (mode == VNET_HW_IF_RX_MODE_POLLING) - apm->polling_count++; - else if (mode == VNET_HW_IF_RX_MODE_INTERRUPT && apm->polling_count > 0) - apm->polling_count--; - } - - return 0; -} - -VNET_DEVICE_CLASS (af_packet_device_class) = { - .name = "af-packet", - .format_device_name = format_af_packet_device_name, - .format_device = format_af_packet_device, - .format_tx_trace = format_af_packet_tx_trace, - .tx_function_n_errors = AF_PACKET_TX_N_ERROR, - .tx_function_error_strings = af_packet_tx_func_error_strings, - .rx_redirect_to_node = af_packet_set_interface_next_node, - .clear_counters = af_packet_clear_hw_interface_counters, - .admin_up_down_function = af_packet_interface_admin_up_down, - .subif_add_del_function = af_packet_subif_add_del_function, - .mac_addr_change_function = af_packet_set_mac_address_function, - .rx_mode_change_function = af_packet_interface_rx_mode_change, -}; - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ diff --git a/src/vnet/devices/af_packet/dir.dox b/src/vnet/devices/af_packet/dir.dox deleted file mode 100644 index 78991c6d97f..00000000000 --- a/src/vnet/devices/af_packet/dir.dox +++ /dev/null @@ -1,29 +0,0 @@ -/* - * 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. - */ - -/* Doxygen directory documentation */ - -/** -@dir -@brief Host Interface Implementation. - -This directory contains the source code for Host Interface driver. The -Host Interface driver leverages the DPDK AF_PACKET driver. - - -*/ -/*? %%clicmd:group_label Host Interface %% ?*/ -/*? %%syscfg:group_label Host Interface %% ?*/ diff --git a/src/vnet/devices/af_packet/node.c b/src/vnet/devices/af_packet/node.c deleted file mode 100644 index 724924f5f4b..00000000000 --- a/src/vnet/devices/af_packet/node.c +++ /dev/null @@ -1,845 +0,0 @@ -/* - *------------------------------------------------------------------ - * af_packet.c - linux kernel packet interface - * - * 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 <linux/if_packet.h> - -#include <vlib/vlib.h> -#include <vlib/unix/unix.h> -#include <vnet/ip/ip.h> -#include <vnet/ethernet/ethernet.h> -#include <vnet/interface/rx_queue_funcs.h> -#include <vnet/feature/feature.h> -#include <vnet/ethernet/packet.h> - -#include <vnet/devices/af_packet/af_packet.h> -#include <vnet/devices/virtio/virtio_std.h> - -#define foreach_af_packet_input_error \ - _ (PARTIAL_PKT, "partial packet") \ - _ (TIMEDOUT_BLK, "timed out block") \ - _ (TOTAL_RECV_BLK, "total received block") -typedef enum -{ -#define _(f,s) AF_PACKET_INPUT_ERROR_##f, - foreach_af_packet_input_error -#undef _ - AF_PACKET_INPUT_N_ERROR, -} af_packet_input_error_t; - -static char *af_packet_input_error_strings[] = { -#define _(n,s) s, - foreach_af_packet_input_error -#undef _ -}; - -typedef struct -{ - u32 next_index; - u32 hw_if_index; - u16 queue_id; - int block; - u32 pkt_num; - void *block_start; - block_desc_t bd; - union - { - tpacket3_hdr_t tph3; - tpacket2_hdr_t tph2; - }; - vnet_virtio_net_hdr_t vnet_hdr; - u8 is_v3; -} af_packet_input_trace_t; - -static u8 * -format_af_packet_input_trace (u8 * s, va_list * args) -{ - CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *); - CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *); - af_packet_input_trace_t *t = va_arg (*args, af_packet_input_trace_t *); - u32 indent = format_get_indent (s); - - s = format (s, "af_packet: hw_if_index %d rx-queue %u next-index %d", - t->hw_if_index, t->queue_id, t->next_index); - - if (t->is_v3) - { - s = format ( - s, "\n%Ublock %u:\n%Uaddress %p version %u seq_num %lu pkt_num %u", - format_white_space, indent + 2, t->block, format_white_space, - indent + 4, t->block_start, t->bd.version, t->bd.hdr.bh1.seq_num, - t->pkt_num); - s = format ( - s, - "\n%Utpacket3_hdr:\n%Ustatus 0x%x len %u snaplen %u mac %u net %u" - "\n%Usec 0x%x nsec 0x%x vlan %U" -#ifdef TP_STATUS_VLAN_TPID_VALID - " vlan_tpid %u" -#endif - , - format_white_space, indent + 2, format_white_space, indent + 4, - t->tph3.tp_status, t->tph3.tp_len, t->tph3.tp_snaplen, t->tph3.tp_mac, - t->tph3.tp_net, format_white_space, indent + 4, t->tph3.tp_sec, - t->tph3.tp_nsec, format_ethernet_vlan_tci, t->tph3.hv1.tp_vlan_tci -#ifdef TP_STATUS_VLAN_TPID_VALID - , - t->tph3.hv1.tp_vlan_tpid -#endif - ); - } - else - { - s = format ( - s, - "\n%Utpacket2_hdr:\n%Ustatus 0x%x len %u snaplen %u mac %u net %u" - "\n%Usec 0x%x nsec 0x%x vlan %U" -#ifdef TP_STATUS_VLAN_TPID_VALID - " vlan_tpid %u" -#endif - , - format_white_space, indent + 2, format_white_space, indent + 4, - t->tph2.tp_status, t->tph2.tp_len, t->tph2.tp_snaplen, t->tph2.tp_mac, - t->tph2.tp_net, format_white_space, indent + 4, t->tph2.tp_sec, - t->tph2.tp_nsec, format_ethernet_vlan_tci, t->tph2.tp_vlan_tci -#ifdef TP_STATUS_VLAN_TPID_VALID - , - t->tph2.tp_vlan_tpid -#endif - ); - } - - s = format (s, - "\n%Uvnet-hdr:\n%Uflags 0x%02x gso_type 0x%02x hdr_len %u" - "\n%Ugso_size %u csum_start %u csum_offset %u", - format_white_space, indent + 2, format_white_space, indent + 4, - t->vnet_hdr.flags, t->vnet_hdr.gso_type, t->vnet_hdr.hdr_len, - format_white_space, indent + 4, t->vnet_hdr.gso_size, - t->vnet_hdr.csum_start, t->vnet_hdr.csum_offset); - return s; -} - -always_inline void -buffer_add_to_chain (vlib_buffer_t *b, vlib_buffer_t *first_b, - vlib_buffer_t *prev_b, u32 bi) -{ - /* update first buffer */ - first_b->total_length_not_including_first_buffer += b->current_length; - - /* update previous buffer */ - prev_b->next_buffer = bi; - prev_b->flags |= VLIB_BUFFER_NEXT_PRESENT; - - /* update current buffer */ - b->next_buffer = ~0; -} - -static_always_inline void -fill_gso_offload (vlib_buffer_t *b, u32 gso_size, u8 l4_hdr_sz) -{ - b->flags |= VNET_BUFFER_F_GSO; - vnet_buffer2 (b)->gso_size = gso_size; - vnet_buffer2 (b)->gso_l4_hdr_sz = l4_hdr_sz; -} - -static_always_inline void -fill_cksum_offload (vlib_buffer_t *b, u8 *l4_hdr_sz, u8 is_ip) -{ - vnet_buffer_oflags_t oflags = 0; - u16 l2hdr_sz = 0; - u16 ethertype = 0; - u8 l4_proto = 0; - - if (is_ip) - { - switch (b->data[0] & 0xf0) - { - case 0x40: - ethertype = ETHERNET_TYPE_IP4; - break; - case 0x60: - ethertype = ETHERNET_TYPE_IP6; - break; - } - } - else - { - ethernet_header_t *eth = (ethernet_header_t *) b->data; - ethertype = clib_net_to_host_u16 (eth->type); - l2hdr_sz = sizeof (ethernet_header_t); - if (ethernet_frame_is_tagged (ethertype)) - { - ethernet_vlan_header_t *vlan = (ethernet_vlan_header_t *) (eth + 1); - - ethertype = clib_net_to_host_u16 (vlan->type); - l2hdr_sz += sizeof (*vlan); - if (ethertype == ETHERNET_TYPE_VLAN) - { - vlan++; - ethertype = clib_net_to_host_u16 (vlan->type); - l2hdr_sz += sizeof (*vlan); - } - } - } - - vnet_buffer (b)->l2_hdr_offset = 0; - vnet_buffer (b)->l3_hdr_offset = l2hdr_sz; - - if (ethertype == ETHERNET_TYPE_IP4) - { - ip4_header_t *ip4 = (ip4_header_t *) (b->data + l2hdr_sz); - vnet_buffer (b)->l4_hdr_offset = l2hdr_sz + ip4_header_bytes (ip4); - b->flags |= (VNET_BUFFER_F_IS_IP4 | VNET_BUFFER_F_L2_HDR_OFFSET_VALID | - VNET_BUFFER_F_L3_HDR_OFFSET_VALID | - VNET_BUFFER_F_L4_HDR_OFFSET_VALID); - - l4_proto = ip4->protocol; - } - else if (ethertype == ETHERNET_TYPE_IP6) - { - ip6_header_t *ip6 = (ip6_header_t *) (b->data + l2hdr_sz); - b->flags |= (VNET_BUFFER_F_IS_IP6 | VNET_BUFFER_F_L2_HDR_OFFSET_VALID | - VNET_BUFFER_F_L3_HDR_OFFSET_VALID | - VNET_BUFFER_F_L4_HDR_OFFSET_VALID); - u16 ip6_hdr_len = sizeof (ip6_header_t); - - if (ip6_ext_hdr (ip6->protocol)) - { - ip6_ext_header_t *p = (void *) (ip6 + 1); - ip6_hdr_len += ip6_ext_header_len (p); - while (ip6_ext_hdr (p->next_hdr)) - { - ip6_hdr_len += ip6_ext_header_len (p); - p = ip6_ext_next_header (p); - } - l4_proto = p->next_hdr; - } - else - l4_proto = ip6->protocol; - vnet_buffer (b)->l4_hdr_offset = l2hdr_sz + ip6_hdr_len; - } - - if (l4_proto == IP_PROTOCOL_TCP) - { - oflags |= VNET_BUFFER_OFFLOAD_F_TCP_CKSUM; - tcp_header_t *tcp = - (tcp_header_t *) (b->data + vnet_buffer (b)->l4_hdr_offset); - *l4_hdr_sz = tcp_header_bytes (tcp); - } - else if (l4_proto == IP_PROTOCOL_UDP) - { - oflags |= VNET_BUFFER_OFFLOAD_F_UDP_CKSUM; - *l4_hdr_sz = sizeof (udp_header_t); - } - - if (oflags) - vnet_buffer_offload_flags_set (b, oflags); -} - -always_inline uword -af_packet_v3_device_input_fn (vlib_main_t *vm, vlib_node_runtime_t *node, - vlib_frame_t *frame, af_packet_if_t *apif, - u16 queue_id, u8 is_cksum_gso_enabled) -{ - af_packet_main_t *apm = &af_packet_main; - af_packet_queue_t *rx_queue = vec_elt_at_index (apif->rx_queues, queue_id); - tpacket3_hdr_t *tph; - u32 next_index; - u32 n_free_bufs; - u32 n_rx_packets = 0; - u32 n_rx_bytes = 0; - u32 timedout_blk = 0; - u32 total = 0; - u32 *to_next = 0; - u32 block = rx_queue->next_rx_block; - u32 block_nr = rx_queue->rx_req->req3.tp_block_nr; - u8 *block_start = 0; - uword n_trace = vlib_get_trace_count (vm, node); - u32 thread_index = vm->thread_index; - u32 n_buffer_bytes = vlib_buffer_get_default_data_size (vm); - u32 min_bufs = rx_queue->rx_req->req3.tp_frame_size / n_buffer_bytes; - u32 num_pkts = 0; - u32 rx_frame_offset = 0; - block_desc_t *bd = 0; - vlib_buffer_t bt = {}; - u8 is_ip = (apif->mode == AF_PACKET_IF_MODE_IP); - - if (is_ip) - next_index = VNET_DEVICE_INPUT_NEXT_IP4_INPUT; - else - { - next_index = VNET_DEVICE_INPUT_NEXT_ETHERNET_INPUT; - if (PREDICT_FALSE (apif->per_interface_next_index != ~0)) - next_index = apif->per_interface_next_index; - - /* redirect if feature path enabled */ - vnet_feature_start_device_input_x1 (apif->sw_if_index, &next_index, &bt); - } - - if ((((block_desc_t *) (block_start = rx_queue->rx_ring[block])) - ->hdr.bh1.block_status & - TP_STATUS_USER) != 0) - { - u32 n_required = 0; - bd = (block_desc_t *) block_start; - - if (PREDICT_FALSE (rx_queue->is_rx_pending)) - { - num_pkts = rx_queue->num_rx_pkts; - rx_frame_offset = rx_queue->rx_frame_offset; - rx_queue->is_rx_pending = 0; - } - else - { - num_pkts = bd->hdr.bh1.num_pkts; - rx_frame_offset = sizeof (block_desc_t); - total++; - - if (TP_STATUS_BLK_TMO & bd->hdr.bh1.block_status) - timedout_blk++; - } - - n_required = clib_max (num_pkts, VLIB_FRAME_SIZE); - n_free_bufs = vec_len (apm->rx_buffers[thread_index]); - if (PREDICT_FALSE (n_free_bufs < n_required)) - { - vec_validate (apm->rx_buffers[thread_index], - n_required + n_free_bufs - 1); - n_free_bufs += vlib_buffer_alloc ( - vm, &apm->rx_buffers[thread_index][n_free_bufs], n_required); - vec_set_len (apm->rx_buffers[thread_index], n_free_bufs); - } - - while (num_pkts && (n_free_bufs >= min_bufs)) - { - u32 next0 = next_index; - u32 n_left_to_next; - - vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); - - while (num_pkts && n_left_to_next && (n_free_bufs >= min_bufs)) - { - tph = (tpacket3_hdr_t *) (block_start + rx_frame_offset); - - if (num_pkts > 1) - CLIB_PREFETCH (block_start + rx_frame_offset + - tph->tp_next_offset, - 2 * CLIB_CACHE_LINE_BYTES, LOAD); - - vlib_buffer_t *b0 = 0, *first_b0 = 0, *prev_b0 = 0; - vnet_virtio_net_hdr_t *vnet_hdr = 0; - u32 data_len = tph->tp_snaplen; - u32 offset = 0; - u32 bi0 = ~0, first_bi0 = ~0; - u8 l4_hdr_sz = 0; - - if (is_cksum_gso_enabled) - vnet_hdr = - (vnet_virtio_net_hdr_t *) ((u8 *) tph + tph->tp_mac - - sizeof (vnet_virtio_net_hdr_t)); - - // save current state and return - if (PREDICT_FALSE (((data_len / n_buffer_bytes) + 1) > - vec_len (apm->rx_buffers[thread_index]))) - { - rx_queue->rx_frame_offset = rx_frame_offset; - rx_queue->num_rx_pkts = num_pkts; - rx_queue->is_rx_pending = 1; - vlib_put_next_frame (vm, node, next_index, n_left_to_next); - goto done; - } - - while (data_len) - { - /* grab free buffer */ - u32 last_empty_buffer = - vec_len (apm->rx_buffers[thread_index]) - 1; - bi0 = apm->rx_buffers[thread_index][last_empty_buffer]; - vec_set_len (apm->rx_buffers[thread_index], - last_empty_buffer); - n_free_bufs--; - - /* copy data */ - u32 bytes_to_copy = - data_len > n_buffer_bytes ? n_buffer_bytes : data_len; - u32 vlan_len = 0; - u32 bytes_copied = 0; - - b0 = vlib_get_buffer (vm, bi0); - b0->current_data = 0; - - /* Kernel removes VLAN headers, so reconstruct VLAN */ - if (PREDICT_FALSE (tph->tp_status & TP_STATUS_VLAN_VALID)) - { - if (PREDICT_TRUE (offset == 0)) - { - clib_memcpy_fast (vlib_buffer_get_current (b0), - (u8 *) tph + tph->tp_mac, - sizeof (ethernet_header_t)); - ethernet_header_t *eth = - vlib_buffer_get_current (b0); - ethernet_vlan_header_t *vlan = - (ethernet_vlan_header_t *) (eth + 1); - vlan->priority_cfi_and_id = - clib_host_to_net_u16 (tph->hv1.tp_vlan_tci); - vlan->type = eth->type; - eth->type = - clib_host_to_net_u16 (ETHERNET_TYPE_VLAN); - vlan_len = sizeof (ethernet_vlan_header_t); - bytes_copied = sizeof (ethernet_header_t); - } - } - clib_memcpy_fast (((u8 *) vlib_buffer_get_current (b0)) + - bytes_copied + vlan_len, - (u8 *) tph + tph->tp_mac + offset + - bytes_copied, - (bytes_to_copy - bytes_copied)); - - /* fill buffer header */ - b0->current_length = bytes_to_copy + vlan_len; - - if (offset == 0) - { - b0->total_length_not_including_first_buffer = 0; - b0->flags = VLIB_BUFFER_TOTAL_LENGTH_VALID; - vnet_buffer (b0)->sw_if_index[VLIB_RX] = - apif->sw_if_index; - vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~0; - first_b0 = b0; - first_bi0 = bi0; - if (is_cksum_gso_enabled) - { - if (vnet_hdr->flags & VIRTIO_NET_HDR_F_NEEDS_CSUM) - fill_cksum_offload (first_b0, &l4_hdr_sz, is_ip); - if (vnet_hdr->gso_type & (VIRTIO_NET_HDR_GSO_TCPV4 | - VIRTIO_NET_HDR_GSO_TCPV6)) - fill_gso_offload (first_b0, vnet_hdr->gso_size, - l4_hdr_sz); - } - } - else - buffer_add_to_chain (b0, first_b0, prev_b0, bi0); - - prev_b0 = b0; - offset += bytes_to_copy; - data_len -= bytes_to_copy; - } - n_rx_packets++; - n_rx_bytes += tph->tp_snaplen; - to_next[0] = first_bi0; - to_next += 1; - n_left_to_next--; - - /* drop partial packets */ - if (PREDICT_FALSE (tph->tp_len != tph->tp_snaplen)) - { - next0 = VNET_DEVICE_INPUT_NEXT_DROP; - first_b0->error = - node->errors[AF_PACKET_INPUT_ERROR_PARTIAL_PKT]; - } - else - { - if (PREDICT_FALSE (apif->mode == AF_PACKET_IF_MODE_IP)) - { - switch (first_b0->data[0] & 0xf0) - { - case 0x40: - next0 = VNET_DEVICE_INPUT_NEXT_IP4_INPUT; - break; - case 0x60: - next0 = VNET_DEVICE_INPUT_NEXT_IP6_INPUT; - break; - default: - next0 = VNET_DEVICE_INPUT_NEXT_DROP; - break; - } - if (PREDICT_FALSE (apif->per_interface_next_index != ~0)) - next0 = apif->per_interface_next_index; - } - else - { - /* copy feature arc data from template */ - first_b0->current_config_index = bt.current_config_index; - vnet_buffer (first_b0)->feature_arc_index = - vnet_buffer (&bt)->feature_arc_index; - } - } - - /* trace */ - if (PREDICT_FALSE (n_trace > 0 && - vlib_trace_buffer (vm, node, next0, first_b0, - /* follow_chain */ 0))) - { - af_packet_input_trace_t *tr; - vlib_set_trace_count (vm, node, --n_trace); - tr = vlib_add_trace (vm, node, first_b0, sizeof (*tr)); - tr->is_v3 = 1; - tr->next_index = next0; - tr->hw_if_index = apif->hw_if_index; - tr->queue_id = queue_id; - tr->block = block; - tr->block_start = bd; - tr->pkt_num = bd->hdr.bh1.num_pkts - num_pkts; - clib_memcpy_fast (&tr->bd, bd, sizeof (block_desc_t)); - clib_memcpy_fast (&tr->tph3, tph, sizeof (tpacket3_hdr_t)); - if (is_cksum_gso_enabled) - clib_memcpy_fast (&tr->vnet_hdr, vnet_hdr, - sizeof (vnet_virtio_net_hdr_t)); - else - clib_memset_u8 (&tr->vnet_hdr, 0, - sizeof (vnet_virtio_net_hdr_t)); - } - - /* enque and take next packet */ - vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next, - n_left_to_next, first_bi0, - next0); - - /* next packet */ - num_pkts--; - rx_frame_offset += tph->tp_next_offset; - } - - vlib_put_next_frame (vm, node, next_index, n_left_to_next); - } - - if (PREDICT_TRUE (num_pkts == 0)) - { - bd->hdr.bh1.block_status = TP_STATUS_KERNEL; - block = (block + 1) % block_nr; - } - else - { - rx_queue->rx_frame_offset = rx_frame_offset; - rx_queue->num_rx_pkts = num_pkts; - rx_queue->is_rx_pending = 1; - } - } - - rx_queue->next_rx_block = block; - -done: - - if (apm->polling_count == 0) - { - if ((((block_desc_t *) (block_start = rx_queue->rx_ring[block])) - ->hdr.bh1.block_status & - TP_STATUS_USER) != 0) - vlib_node_set_state (vm, node->node_index, VLIB_NODE_STATE_POLLING); - else - vlib_node_set_state (vm, node->node_index, VLIB_NODE_STATE_INTERRUPT); - } - - vlib_error_count (vm, node->node_index, AF_PACKET_INPUT_ERROR_TOTAL_RECV_BLK, - total); - vlib_error_count (vm, node->node_index, AF_PACKET_INPUT_ERROR_TIMEDOUT_BLK, - timedout_blk); - - vlib_increment_combined_counter - (vnet_get_main ()->interface_main.combined_sw_if_counters - + VNET_INTERFACE_COUNTER_RX, - vlib_get_thread_index (), apif->hw_if_index, n_rx_packets, n_rx_bytes); - - vnet_device_increment_rx_packets (thread_index, n_rx_packets); - return n_rx_packets; -} - -always_inline uword -af_packet_v2_device_input_fn (vlib_main_t *vm, vlib_node_runtime_t *node, - vlib_frame_t *frame, af_packet_if_t *apif, - u16 queue_id, u8 is_cksum_gso_enabled) -{ - af_packet_main_t *apm = &af_packet_main; - af_packet_queue_t *rx_queue = vec_elt_at_index (apif->rx_queues, queue_id); - tpacket2_hdr_t *tph; - u32 next_index; - u32 block = 0; - u32 rx_frame; - u32 n_free_bufs; - u32 n_rx_packets = 0; - u32 n_rx_bytes = 0; - u32 *to_next = 0; - u32 frame_size = rx_queue->rx_req->req.tp_frame_size; - u32 frame_num = rx_queue->rx_req->req.tp_frame_nr; - u8 *block_start = rx_queue->rx_ring[block]; - uword n_trace = vlib_get_trace_count (vm, node); - u32 thread_index = vm->thread_index; - u32 n_buffer_bytes = vlib_buffer_get_default_data_size (vm); - u32 min_bufs = rx_queue->rx_req->req.tp_frame_size / n_buffer_bytes; - u8 is_ip = (apif->mode == AF_PACKET_IF_MODE_IP); - vlib_buffer_t bt = {}; - - if (is_ip) - { - next_index = VNET_DEVICE_INPUT_NEXT_IP4_INPUT; - } - else - { - next_index = VNET_DEVICE_INPUT_NEXT_ETHERNET_INPUT; - if (PREDICT_FALSE (apif->per_interface_next_index != ~0)) - next_index = apif->per_interface_next_index; - - /* redirect if feature path enabled */ - vnet_feature_start_device_input_x1 (apif->sw_if_index, &next_index, &bt); - } - - n_free_bufs = vec_len (apm->rx_buffers[thread_index]); - if (PREDICT_FALSE (n_free_bufs < VLIB_FRAME_SIZE)) - { - vec_validate (apm->rx_buffers[thread_index], - VLIB_FRAME_SIZE + n_free_bufs - 1); - n_free_bufs += vlib_buffer_alloc ( - vm, &apm->rx_buffers[thread_index][n_free_bufs], VLIB_FRAME_SIZE); - vec_set_len (apm->rx_buffers[thread_index], n_free_bufs); - } - - rx_frame = rx_queue->next_rx_frame; - tph = (tpacket2_hdr_t *) (block_start + rx_frame * frame_size); - while ((tph->tp_status & TP_STATUS_USER) && (n_free_bufs > min_bufs)) - { - vlib_buffer_t *b0 = 0, *first_b0 = 0, *prev_b0 = 0; - u32 next0 = next_index; - - u32 n_left_to_next; - vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); - while ((tph->tp_status & TP_STATUS_USER) && (n_free_bufs > min_bufs) && - n_left_to_next) - { - vnet_virtio_net_hdr_t *vnet_hdr = 0; - u32 data_len = tph->tp_snaplen; - u32 offset = 0; - u32 bi0 = 0, first_bi0 = 0; - u8 l4_hdr_sz = 0; - - if (is_cksum_gso_enabled) - vnet_hdr = - (vnet_virtio_net_hdr_t *) ((u8 *) tph + tph->tp_mac - - sizeof (vnet_virtio_net_hdr_t)); - while (data_len) - { - /* grab free buffer */ - u32 last_empty_buffer = - vec_len (apm->rx_buffers[thread_index]) - 1; - bi0 = apm->rx_buffers[thread_index][last_empty_buffer]; - b0 = vlib_get_buffer (vm, bi0); - vec_set_len (apm->rx_buffers[thread_index], last_empty_buffer); - n_free_bufs--; - - /* copy data */ - u32 bytes_to_copy = - data_len > n_buffer_bytes ? n_buffer_bytes : data_len; - u32 vlan_len = 0; - u32 bytes_copied = 0; - b0->current_data = 0; - /* Kernel removes VLAN headers, so reconstruct VLAN */ - if (PREDICT_FALSE (tph->tp_status & TP_STATUS_VLAN_VALID)) - { - if (PREDICT_TRUE (offset == 0)) - { - clib_memcpy_fast (vlib_buffer_get_current (b0), - (u8 *) tph + tph->tp_mac, - sizeof (ethernet_header_t)); - ethernet_header_t *eth = vlib_buffer_get_current (b0); - ethernet_vlan_header_t *vlan = - (ethernet_vlan_header_t *) (eth + 1); - vlan->priority_cfi_and_id = - clib_host_to_net_u16 (tph->tp_vlan_tci); - vlan->type = eth->type; - eth->type = clib_host_to_net_u16 (ETHERNET_TYPE_VLAN); - vlan_len = sizeof (ethernet_vlan_header_t); - bytes_copied = sizeof (ethernet_header_t); - } - } - clib_memcpy_fast (((u8 *) vlib_buffer_get_current (b0)) + - bytes_copied + vlan_len, - (u8 *) tph + tph->tp_mac + offset + - bytes_copied, - (bytes_to_copy - bytes_copied)); - - /* fill buffer header */ - b0->current_length = bytes_to_copy + vlan_len; - - if (offset == 0) - { - b0->total_length_not_including_first_buffer = 0; - b0->flags = VLIB_BUFFER_TOTAL_LENGTH_VALID; - vnet_buffer (b0)->sw_if_index[VLIB_RX] = apif->sw_if_index; - vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~0; - first_bi0 = bi0; - first_b0 = vlib_get_buffer (vm, first_bi0); - - if (is_cksum_gso_enabled) - { - if (vnet_hdr->flags & VIRTIO_NET_HDR_F_NEEDS_CSUM) - fill_cksum_offload (first_b0, &l4_hdr_sz, is_ip); - if (vnet_hdr->gso_type & (VIRTIO_NET_HDR_GSO_TCPV4 | - VIRTIO_NET_HDR_GSO_TCPV6)) - fill_gso_offload (first_b0, vnet_hdr->gso_size, - l4_hdr_sz); - } - } - else - buffer_add_to_chain (b0, first_b0, prev_b0, bi0); - - prev_b0 = b0; - offset += bytes_to_copy; - data_len -= bytes_to_copy; - } - n_rx_packets++; - n_rx_bytes += tph->tp_snaplen; - to_next[0] = first_bi0; - to_next += 1; - n_left_to_next--; - - /* drop partial packets */ - if (PREDICT_FALSE (tph->tp_len != tph->tp_snaplen)) - { - next0 = VNET_DEVICE_INPUT_NEXT_DROP; - first_b0->error = - node->errors[AF_PACKET_INPUT_ERROR_PARTIAL_PKT]; - } - else - { - if (PREDICT_FALSE (is_ip)) - { - switch (first_b0->data[0] & 0xf0) - { - case 0x40: - next0 = VNET_DEVICE_INPUT_NEXT_IP4_INPUT; - break; - case 0x60: - next0 = VNET_DEVICE_INPUT_NEXT_IP6_INPUT; - break; - default: - next0 = VNET_DEVICE_INPUT_NEXT_DROP; - break; - } - if (PREDICT_FALSE (apif->per_interface_next_index != ~0)) - next0 = apif->per_interface_next_index; - } - else - { - /* copy feature arc data from template */ - first_b0->current_config_index = bt.current_config_index; - vnet_buffer (first_b0)->feature_arc_index = - vnet_buffer (&bt)->feature_arc_index; - } - } - - /* trace */ - if (PREDICT_FALSE (n_trace > 0 && - vlib_trace_buffer (vm, node, next0, first_b0, - /* follow_chain */ 0))) - { - af_packet_input_trace_t *tr; - vlib_set_trace_count (vm, node, --n_trace); - tr = vlib_add_trace (vm, node, first_b0, sizeof (*tr)); - tr->is_v3 = 0; - tr->next_index = next0; - tr->hw_if_index = apif->hw_if_index; - tr->queue_id = queue_id; - clib_memcpy_fast (&tr->tph2, tph, sizeof (struct tpacket2_hdr)); - if (is_cksum_gso_enabled) - clib_memcpy_fast (&tr->vnet_hdr, vnet_hdr, - sizeof (vnet_virtio_net_hdr_t)); - else - clib_memset_u8 (&tr->vnet_hdr, 0, - sizeof (vnet_virtio_net_hdr_t)); - } - - /* enque and take next packet */ - vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next, - n_left_to_next, first_bi0, next0); - - /* next packet */ - tph->tp_status = TP_STATUS_KERNEL; - rx_frame = (rx_frame + 1) % frame_num; - tph = (struct tpacket2_hdr *) (block_start + rx_frame * frame_size); - } - - vlib_put_next_frame (vm, node, next_index, n_left_to_next); - } - - rx_queue->next_rx_frame = rx_frame; - - vlib_increment_combined_counter ( - vnet_get_main ()->interface_main.combined_sw_if_counters + - VNET_INTERFACE_COUNTER_RX, - vlib_get_thread_index (), apif->hw_if_index, n_rx_packets, n_rx_bytes); - - vnet_device_increment_rx_packets (thread_index, n_rx_packets); - return n_rx_packets; -} - -always_inline uword -af_packet_device_input_fn (vlib_main_t *vm, vlib_node_runtime_t *node, - vlib_frame_t *frame, af_packet_if_t *apif, - u16 queue_id, u8 is_cksum_gso_enabled) - -{ - if (apif->version == TPACKET_V3) - return af_packet_v3_device_input_fn (vm, node, frame, apif, queue_id, - is_cksum_gso_enabled); - else - return af_packet_v2_device_input_fn (vm, node, frame, apif, queue_id, - is_cksum_gso_enabled); -} - -VLIB_NODE_FN (af_packet_input_node) (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * frame) -{ - u32 n_rx_packets = 0; - af_packet_main_t *apm = &af_packet_main; - vnet_hw_if_rxq_poll_vector_t *pv; - pv = vnet_hw_if_get_rxq_poll_vector (vm, node); - for (int i = 0; i < vec_len (pv); i++) - { - af_packet_if_t *apif; - apif = vec_elt_at_index (apm->interfaces, pv[i].dev_instance); - if (apif->is_admin_up) - { - if (apif->is_cksum_gso_enabled) - n_rx_packets += af_packet_device_input_fn (vm, node, frame, apif, - pv[i].queue_id, 1); - else - n_rx_packets += af_packet_device_input_fn (vm, node, frame, apif, - pv[i].queue_id, 0); - } - } - return n_rx_packets; -} - -VLIB_REGISTER_NODE (af_packet_input_node) = { - .name = "af-packet-input", - .flags = VLIB_NODE_FLAG_TRACE_SUPPORTED, - .sibling_of = "device-input", - .format_trace = format_af_packet_input_trace, - .type = VLIB_NODE_TYPE_INPUT, - .state = VLIB_NODE_STATE_INTERRUPT, - .n_errors = AF_PACKET_INPUT_N_ERROR, - .error_strings = af_packet_input_error_strings, -}; - - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ |