csit - Integration tests

Age	Commit message (Expand)	Author	Files	Lines
2016-02-08	New version of RF tests.	Stefan Kobza	1	-0/+5

/* *------------------------------------------------------------------ * 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 <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> #define AF_PACKET_DEBUG_SOCKET 0 #define AF_PACKET_TX_FRAMES_PER_BLOCK 1024 #define AF_PACKET_TX_FRAME_SIZE (2048 * 5) #define AF_PACKET_TX_BLOCK_NR 1 #define AF_PACKET_TX_FRAME_NR (AF_PACKET_TX_BLOCK_NR * \ AF_PACKET_TX_FRAMES_PER_BLOCK) #define AF_PACKET_TX_BLOCK_SIZE (AF_PACKET_TX_FRAME_SIZE * \ AF_PACKET_TX_FRAMES_PER_BLOCK) #define AF_PACKET_RX_FRAMES_PER_BLOCK 1024 #define AF_PACKET_RX_FRAME_SIZE (2048 * 5) #define AF_PACKET_RX_BLOCK_NR 1 #define AF_PACKET_RX_FRAME_NR (AF_PACKET_RX_BLOCK_NR * \ AF_PACKET_RX_FRAMES_PER_BLOCK) #define AF_PACKET_RX_BLOCK_SIZE (AF_PACKET_RX_FRAME_SIZE * \ AF_PACKET_RX_FRAMES_PER_BLOCK) #if AF_PACKET_DEBUG_SOCKET == 1 #define DBG_SOCK(args...) clib_warning(args); #else #define DBG_SOCK(args...) #endif /*defined in net/if.h but clashes with dpdk headers */ unsigned int if_nametoindex (const char *ifname); typedef struct tpacket_req tpacket_req_t; static u32 af_packet_eth_flag_change (vnet_main_t * vnm, vnet_hw_interface_t * hi, u32 flags) { /* nothing for now */ return 0; } static clib_error_t * af_packet_fd_read_ready (unix_file_t * uf) { af_packet_main_t *apm = &af_packet_main; vnet_main_t *vnm = vnet_get_main (); u32 idx = uf->private_data; af_packet_if_t *apif = pool_elt_at_index (apm->interfaces, idx); apm->pending_input_bitmap = clib_bitmap_set (apm->pending_input_bitmap, idx, 1); /* Schedule the rx node */ vnet_device_input_set_interrupt_pending (vnm, apif->hw_if_index, 0); return 0; } static int create_packet_v2_sock (u8 * name, tpacket_req_t * rx_req, tpacket_req_t * tx_req, int *fd, u8 ** ring) { int ret, err; struct sockaddr_ll sll; uint host_if_index; int ver = TPACKET_V2; socklen_t req_sz = sizeof (struct tpacket_req); u32 ring_sz = rx_req->tp_block_size * rx_req->tp_block_nr + tx_req->tp_block_size * tx_req->tp_block_nr; host_if_index = if_nametoindex ((const char *) name); if (!host_if_index) { DBG_SOCK ("Wrong host interface name"); ret = VNET_API_ERROR_INVALID_INTERFACE; goto error; } if ((*fd = socket (AF_PACKET, SOCK_RAW, htons (ETH_P_ALL))) < 0) { DBG_SOCK ("Failed to create socket"); ret = VNET_API_ERROR_SYSCALL_ERROR_1; goto error; } if ((err = setsockopt (*fd, SOL_PACKET, PACKET_VERSION, &ver, sizeof (ver))) < 0) { DBG_SOCK ("Failed to set rx packet interface version"); ret = VNET_API_ERROR_SYSCALL_ERROR_1; goto error; } int opt = 1; if ((err = setsockopt (*fd, SOL_PACKET, PACKET_LOSS, &opt, sizeof (opt))) < 0) { DBG_SOCK ("Failed to set packet tx ring error handling option"); ret = VNET_API_ERROR_SYSCALL_ERROR_1; goto error; } if ((err = setsockopt (*fd, SOL_PACKET, PACKET_RX_RING, rx_req, req_sz)) < 0) { DBG_SOCK ("Failed to set packet rx ring options"); ret = VNET_API_ERROR_SYSCALL_ERROR_1; goto error; } if ((err = setsockopt (*fd, SOL_PACKET, PACKET_TX_RING, tx_req, req_sz)) < 0) { DBG_SOCK ("Failed to set packet rx ring options"); ret = VNET_API_ERROR_SYSCALL_ERROR_1; goto error; } *ring = mmap (NULL, ring_sz, PROT_READ | PROT_WRITE, MAP_SHARED | MAP_LOCKED, *fd, 0); if (*ring == MAP_FAILED) { DBG_SOCK ("mmap failure"); ret = VNET_API_ERROR_SYSCALL_ERROR_1; goto error; } memset (&sll, 0, sizeof (sll)); sll.sll_family = PF_PACKET; sll.sll_protocol = htons (ETH_P_ALL); sll.sll_ifindex = host_if_index; if ((err = bind (*fd, (struct sockaddr *) &sll, sizeof (sll))) < 0) { DBG_SOCK ("Failed to bind rx packet socket (error %d)", err); ret = VNET_API_ERROR_SYSCALL_ERROR_1; goto error; } return 0; error: if (*fd >= 0) close (*fd); *fd = -1; return ret; } int af_packet_create_if (vlib_main_t * vm, u8 * host_if_name, u8 * hw_addr_set, u32 * sw_if_index) { af_packet_main_t *apm = &af_packet_main; int ret, fd = -1; struct tpacket_req *rx_req = 0; struct tpacket_req *tx_req = 0; u8 *ring = 0; af_packet_if_t *apif = 0; u8 hw_addr[6]; clib_error_t *error; vnet_sw_interface_t *sw; vlib_thread_main_t *tm = vlib_get_thread_main (); vnet_main_t *vnm = vnet_get_main (); uword *p; uword if_index; u8 *host_if_name_dup = vec_dup (host_if_name); p = mhash_get (&apm->if_index_by_host_if_name, host_if_name); if (p) { return VNET_API_ERROR_SUBIF_ALREADY_EXISTS; } vec_validate (rx_req, 0); rx_req->tp_block_size = AF_PACKET_RX_BLOCK_SIZE; rx_req->tp_frame_size = AF_PACKET_RX_FRAME_SIZE; rx_req->tp_block_nr = AF_PACKET_RX_BLOCK_NR; rx_req->tp_frame_nr = AF_PACKET_RX_FRAME_NR; vec_validate (tx_req, 0); tx_req->tp_block_size = AF_PACKET_TX_BLOCK_SIZE; tx_req->tp_frame_size = AF_PACKET_TX_FRAME_SIZE; tx_req->tp_block_nr = AF_PACKET_TX_BLOCK_NR; tx_req->tp_frame_nr = AF_PACKET_TX_FRAME_NR; ret = create_packet_v2_sock (host_if_name, rx_req, tx_req, &fd, &ring); if (ret != 0) goto error; /* So far everything looks good, let's create interface */ pool_get (apm->interfaces, apif); if_index = apif - apm->interfaces; apif->fd = fd; apif->rx_ring = ring; apif->tx_ring = ring + rx_req->tp_block_size * rx_req->tp_block_nr; apif->rx_req = rx_req; apif->tx_req = tx_req; apif->host_if_name = host_if_name_dup; apif->per_interface_next_index = ~0; apif->next_tx_frame = 0; apif->next_rx_frame = 0; if (tm->n_vlib_mains > 1) { apif->lockp = clib_mem_alloc_aligned (CLIB_CACHE_LINE_BYTES, CLIB_CACHE_LINE_BYTES); memset ((void *) apif->lockp, 0, CLIB_CACHE_LINE_BYTES); } { unix_file_t template = { 0 }; template.read_function = af_packet_fd_read_ready; template.file_descriptor = fd; template.private_data = if_index; template.flags = UNIX_FILE_EVENT_EDGE_TRIGGERED; apif->unix_file_index = unix_file_add (&unix_main, &template); } /*use configured or generate random MAC address */ if (hw_addr_set) clib_memcpy (hw_addr, hw_addr_set, 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; } error = ethernet_register_interface (vnm, af_packet_device_class.index, if_index, hw_addr, &apif->hw_if_index, af_packet_eth_flag_change); if (error) { memset (apif, 0, sizeof (*apif)); pool_put (apm->interfaces, apif); clib_error_report (error); ret = VNET_API_ERROR_SYSCALL_ERROR_1; goto error; } sw = vnet_get_hw_sw_interface (vnm, apif->hw_if_index); apif->sw_if_index = sw->sw_if_index; vnet_set_device_input_node (apif->hw_if_index, af_packet_input_node.index); vnet_device_input_assign_thread (apif->hw_if_index, 0, /* queue */ ~0 /* any cpu */ ); 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); if (sw_if_index) *sw_if_index = apif->sw_if_index; return 0; error: vec_free (host_if_name_dup); vec_free (rx_req); vec_free (tx_req); return ret; } int af_packet_delete_if (vlib_main_t * vm, u8 * host_if_name) { vnet_main_t *vnm = vnet_get_main (); af_packet_main_t *apm = &af_packet_main; af_packet_if_t *apif; uword *p; uword if_index; u32 ring_sz; p = mhash_get (&apm->if_index_by_host_if_name, host_if_name); if (p == NULL) { clib_warning ("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]); if_index = apif - apm->interfaces; /* bring down the interface */ vnet_hw_interface_set_flags (vnm, apif->hw_if_index, 0); /* clean up */ if (apif->unix_file_index != ~0) { unix_file_del (&unix_main, unix_main.file_pool + apif->unix_file_index); apif->unix_file_index = ~0; } else close (apif->fd); ring_sz = apif->rx_req->tp_block_size * apif->rx_req->tp_block_nr + apif->tx_req->tp_block_size * apif->tx_req->tp_block_nr; if (munmap (apif->rx_ring, ring_sz)) clib_warning ("Host interface %s could not free rx/tx ring", host_if_name); apif->rx_ring = NULL; apif->tx_ring = NULL; apif->fd = -1; vec_free (apif->rx_req); apif->rx_req = NULL; vec_free (apif->tx_req); apif->tx_req = NULL; vec_free (apif->host_if_name); apif->host_if_name = NULL; mhash_unset (&apm->if_index_by_host_if_name, host_if_name, &if_index); ethernet_delete_interface (vnm, apif->hw_if_index); pool_put (apm->interfaces, apif); 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 (); 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); return 0; } VLIB_INIT_FUNCTION (af_packet_init); /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */