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Diffstat (limited to 'vnet/vnet/devices/af_packet/af_packet.c')
-rw-r--r--vnet/vnet/devices/af_packet/af_packet.c366
1 files changed, 0 insertions, 366 deletions
diff --git a/vnet/vnet/devices/af_packet/af_packet.c b/vnet/vnet/devices/af_packet/af_packet.c
deleted file mode 100644
index 91c3988b439..00000000000
--- a/vnet/vnet/devices/af_packet/af_packet.c
+++ /dev/null
@@ -1,366 +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 <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)
-{
- vlib_main_t *vm = vlib_get_main ();
- af_packet_main_t *apm = &af_packet_main;
- u32 idx = uf->private_data;
-
- apm->pending_input_bitmap =
- clib_bitmap_set (apm->pending_input_bitmap, idx, 1);
-
- /* Schedule the rx node */
- vlib_node_set_interrupt_pending (vm, af_packet_input_node.index);
-
- 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;
- 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;
-
- {
- 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_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:
- */