740feaf349
rte_driver->name has the driver name and all physical and virtual devices has access to it. Previously it was not possible for virtual ethernet devices to access rte_driver->name field (because eth_dev used to keep only pci_dev), and it was required to save driver name in the device private struct. After re-works on bus and vdev, it is possible for all bus types to access rte_driver. It is able to remove the driver name from ethdev device private data and use eth_dev->device->driver->name. Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com> Acked-by: Shreyansh Jain <shreyansh.jain@nxp.com> Acked-by: Jan Blunck <jblunck@infradead.org>
1564 lines
40 KiB
C
1564 lines
40 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright(c) 2016-2017 Intel Corporation. All rights reserved.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <rte_atomic.h>
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#include <rte_branch_prediction.h>
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#include <rte_byteorder.h>
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#include <rte_common.h>
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#include <rte_mbuf.h>
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#include <rte_ethdev.h>
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#include <rte_ethdev_vdev.h>
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#include <rte_malloc.h>
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#include <rte_vdev.h>
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#include <rte_kvargs.h>
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#include <rte_net.h>
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#include <rte_debug.h>
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#include <rte_ip.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/socket.h>
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#include <sys/ioctl.h>
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#include <sys/utsname.h>
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#include <sys/mman.h>
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#include <errno.h>
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#include <signal.h>
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#include <stdint.h>
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#include <sys/uio.h>
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#include <unistd.h>
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#include <arpa/inet.h>
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#include <net/if.h>
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#include <linux/if_tun.h>
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#include <linux/if_ether.h>
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#include <linux/version.h>
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#include <fcntl.h>
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#include <rte_eth_tap.h>
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#include <tap_flow.h>
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#include <tap_netlink.h>
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#include <tap_tcmsgs.h>
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/* Linux based path to the TUN device */
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#define TUN_TAP_DEV_PATH "/dev/net/tun"
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#define DEFAULT_TAP_NAME "dtap"
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#define ETH_TAP_IFACE_ARG "iface"
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#define ETH_TAP_SPEED_ARG "speed"
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#define ETH_TAP_REMOTE_ARG "remote"
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#define ETH_TAP_MAC_ARG "mac"
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#define ETH_TAP_MAC_FIXED "fixed"
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#define FLOWER_KERNEL_VERSION KERNEL_VERSION(4, 2, 0)
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#define FLOWER_VLAN_KERNEL_VERSION KERNEL_VERSION(4, 9, 0)
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static struct rte_vdev_driver pmd_tap_drv;
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static const char *valid_arguments[] = {
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ETH_TAP_IFACE_ARG,
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ETH_TAP_SPEED_ARG,
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ETH_TAP_REMOTE_ARG,
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ETH_TAP_MAC_ARG,
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NULL
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};
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static int tap_unit;
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static volatile uint32_t tap_trigger; /* Rx trigger */
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static struct rte_eth_link pmd_link = {
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.link_speed = ETH_SPEED_NUM_10G,
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.link_duplex = ETH_LINK_FULL_DUPLEX,
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.link_status = ETH_LINK_DOWN,
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.link_autoneg = ETH_LINK_SPEED_AUTONEG
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};
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static void
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tap_trigger_cb(int sig __rte_unused)
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{
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/* Valid trigger values are nonzero */
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tap_trigger = (tap_trigger + 1) | 0x80000000;
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}
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/* Specifies on what netdevices the ioctl should be applied */
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enum ioctl_mode {
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LOCAL_AND_REMOTE,
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LOCAL_ONLY,
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REMOTE_ONLY,
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};
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static int tap_intr_handle_set(struct rte_eth_dev *dev, int set);
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/* Tun/Tap allocation routine
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*
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* name is the number of the interface to use, unless NULL to take the host
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* supplied name.
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*/
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static int
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tun_alloc(struct pmd_internals *pmd)
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{
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struct ifreq ifr;
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#ifdef IFF_MULTI_QUEUE
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unsigned int features;
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#endif
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int fd;
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memset(&ifr, 0, sizeof(struct ifreq));
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/*
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* Do not set IFF_NO_PI as packet information header will be needed
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* to check if a received packet has been truncated.
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*/
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ifr.ifr_flags = IFF_TAP;
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snprintf(ifr.ifr_name, IFNAMSIZ, "%s", pmd->name);
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RTE_LOG(DEBUG, PMD, "ifr_name '%s'\n", ifr.ifr_name);
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fd = open(TUN_TAP_DEV_PATH, O_RDWR);
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if (fd < 0) {
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RTE_LOG(ERR, PMD, "Unable to create TAP interface");
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goto error;
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}
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#ifdef IFF_MULTI_QUEUE
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/* Grab the TUN features to verify we can work multi-queue */
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if (ioctl(fd, TUNGETFEATURES, &features) < 0) {
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RTE_LOG(ERR, PMD, "TAP unable to get TUN/TAP features\n");
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goto error;
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}
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RTE_LOG(DEBUG, PMD, " TAP Features %08x\n", features);
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if (features & IFF_MULTI_QUEUE) {
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RTE_LOG(DEBUG, PMD, " Multi-queue support for %d queues\n",
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RTE_PMD_TAP_MAX_QUEUES);
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ifr.ifr_flags |= IFF_MULTI_QUEUE;
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} else
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#endif
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{
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ifr.ifr_flags |= IFF_ONE_QUEUE;
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RTE_LOG(DEBUG, PMD, " Single queue only support\n");
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}
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/* Set the TUN/TAP configuration and set the name if needed */
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if (ioctl(fd, TUNSETIFF, (void *)&ifr) < 0) {
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RTE_LOG(WARNING, PMD,
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"Unable to set TUNSETIFF for %s\n",
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ifr.ifr_name);
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perror("TUNSETIFF");
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goto error;
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}
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/* Always set the file descriptor to non-blocking */
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if (fcntl(fd, F_SETFL, O_NONBLOCK) < 0) {
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RTE_LOG(WARNING, PMD,
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"Unable to set %s to nonblocking\n",
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ifr.ifr_name);
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perror("F_SETFL, NONBLOCK");
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goto error;
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}
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/* Set up trigger to optimize empty Rx bursts */
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errno = 0;
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do {
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struct sigaction sa;
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int flags = fcntl(fd, F_GETFL);
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if (flags == -1 || sigaction(SIGIO, NULL, &sa) == -1)
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break;
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if (sa.sa_handler != tap_trigger_cb) {
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/*
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* Make sure SIGIO is not already taken. This is done
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* as late as possible to leave the application a
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* chance to set up its own signal handler first.
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*/
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if (sa.sa_handler != SIG_IGN &&
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sa.sa_handler != SIG_DFL) {
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errno = EBUSY;
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break;
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}
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sa = (struct sigaction){
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.sa_flags = SA_RESTART,
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.sa_handler = tap_trigger_cb,
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};
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if (sigaction(SIGIO, &sa, NULL) == -1)
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break;
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}
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/* Enable SIGIO on file descriptor */
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fcntl(fd, F_SETFL, flags | O_ASYNC);
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fcntl(fd, F_SETOWN, getpid());
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} while (0);
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if (errno) {
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/* Disable trigger globally in case of error */
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tap_trigger = 0;
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RTE_LOG(WARNING, PMD, "Rx trigger disabled: %s\n",
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strerror(errno));
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}
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return fd;
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error:
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if (fd > 0)
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close(fd);
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return -1;
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}
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static void
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tap_verify_csum(struct rte_mbuf *mbuf)
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{
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uint32_t l2 = mbuf->packet_type & RTE_PTYPE_L2_MASK;
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uint32_t l3 = mbuf->packet_type & RTE_PTYPE_L3_MASK;
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uint32_t l4 = mbuf->packet_type & RTE_PTYPE_L4_MASK;
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unsigned int l2_len = sizeof(struct ether_hdr);
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unsigned int l3_len;
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uint16_t cksum = 0;
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void *l3_hdr;
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void *l4_hdr;
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if (l2 == RTE_PTYPE_L2_ETHER_VLAN)
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l2_len += 4;
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else if (l2 == RTE_PTYPE_L2_ETHER_QINQ)
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l2_len += 8;
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/* Don't verify checksum for packets with discontinuous L2 header */
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if (unlikely(l2_len + sizeof(struct ipv4_hdr) >
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rte_pktmbuf_data_len(mbuf)))
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return;
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l3_hdr = rte_pktmbuf_mtod_offset(mbuf, void *, l2_len);
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if (l3 == RTE_PTYPE_L3_IPV4 || l3 == RTE_PTYPE_L3_IPV4_EXT) {
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struct ipv4_hdr *iph = l3_hdr;
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/* ihl contains the number of 4-byte words in the header */
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l3_len = 4 * (iph->version_ihl & 0xf);
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if (unlikely(l2_len + l3_len > rte_pktmbuf_data_len(mbuf)))
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return;
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cksum = ~rte_raw_cksum(iph, l3_len);
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mbuf->ol_flags |= cksum ?
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PKT_RX_IP_CKSUM_BAD :
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PKT_RX_IP_CKSUM_GOOD;
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} else if (l3 == RTE_PTYPE_L3_IPV6) {
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l3_len = sizeof(struct ipv6_hdr);
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} else {
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/* IPv6 extensions are not supported */
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return;
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}
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if (l4 == RTE_PTYPE_L4_UDP || l4 == RTE_PTYPE_L4_TCP) {
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l4_hdr = rte_pktmbuf_mtod_offset(mbuf, void *, l2_len + l3_len);
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/* Don't verify checksum for multi-segment packets. */
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if (mbuf->nb_segs > 1)
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return;
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if (l3 == RTE_PTYPE_L3_IPV4)
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cksum = ~rte_ipv4_udptcp_cksum(l3_hdr, l4_hdr);
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else if (l3 == RTE_PTYPE_L3_IPV6)
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cksum = ~rte_ipv6_udptcp_cksum(l3_hdr, l4_hdr);
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mbuf->ol_flags |= cksum ?
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PKT_RX_L4_CKSUM_BAD :
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PKT_RX_L4_CKSUM_GOOD;
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}
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}
|
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|
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/* Callback to handle the rx burst of packets to the correct interface and
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* file descriptor(s) in a multi-queue setup.
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*/
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static uint16_t
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pmd_rx_burst(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
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{
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struct rx_queue *rxq = queue;
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uint16_t num_rx;
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unsigned long num_rx_bytes = 0;
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uint32_t trigger = tap_trigger;
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|
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if (trigger == rxq->trigger_seen)
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return 0;
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if (trigger)
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rxq->trigger_seen = trigger;
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rte_compiler_barrier();
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for (num_rx = 0; num_rx < nb_pkts; ) {
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struct rte_mbuf *mbuf = rxq->pool;
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struct rte_mbuf *seg = NULL;
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struct rte_mbuf *new_tail = NULL;
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uint16_t data_off = rte_pktmbuf_headroom(mbuf);
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int len;
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len = readv(rxq->fd, *rxq->iovecs,
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1 + (rxq->rxmode->enable_scatter ?
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rxq->nb_rx_desc : 1));
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if (len < (int)sizeof(struct tun_pi))
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break;
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|
|
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/* Packet couldn't fit in the provided mbuf */
|
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if (unlikely(rxq->pi.flags & TUN_PKT_STRIP)) {
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rxq->stats.ierrors++;
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continue;
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}
|
|
|
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len -= sizeof(struct tun_pi);
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|
|
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mbuf->pkt_len = len;
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mbuf->port = rxq->in_port;
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while (1) {
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struct rte_mbuf *buf = rte_pktmbuf_alloc(rxq->mp);
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|
|
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if (unlikely(!buf)) {
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rxq->stats.rx_nombuf++;
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/* No new buf has been allocated: do nothing */
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if (!new_tail || !seg)
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goto end;
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seg->next = NULL;
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rte_pktmbuf_free(mbuf);
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|
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goto end;
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}
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seg = seg ? seg->next : mbuf;
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if (rxq->pool == mbuf)
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rxq->pool = buf;
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if (new_tail)
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new_tail->next = buf;
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new_tail = buf;
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new_tail->next = seg->next;
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|
|
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/* iovecs[0] is reserved for packet info (pi) */
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(*rxq->iovecs)[mbuf->nb_segs].iov_len =
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buf->buf_len - data_off;
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(*rxq->iovecs)[mbuf->nb_segs].iov_base =
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(char *)buf->buf_addr + data_off;
|
|
|
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seg->data_len = RTE_MIN(seg->buf_len - data_off, len);
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seg->data_off = data_off;
|
|
|
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len -= seg->data_len;
|
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if (len <= 0)
|
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break;
|
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mbuf->nb_segs++;
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/* First segment has headroom, not the others */
|
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data_off = 0;
|
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}
|
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seg->next = NULL;
|
|
mbuf->packet_type = rte_net_get_ptype(mbuf, NULL,
|
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RTE_PTYPE_ALL_MASK);
|
|
if (rxq->rxmode->hw_ip_checksum)
|
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tap_verify_csum(mbuf);
|
|
|
|
/* account for the receive frame */
|
|
bufs[num_rx++] = mbuf;
|
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num_rx_bytes += mbuf->pkt_len;
|
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}
|
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end:
|
|
rxq->stats.ipackets += num_rx;
|
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rxq->stats.ibytes += num_rx_bytes;
|
|
|
|
return num_rx;
|
|
}
|
|
|
|
static void
|
|
tap_tx_offload(char *packet, uint64_t ol_flags, unsigned int l2_len,
|
|
unsigned int l3_len)
|
|
{
|
|
void *l3_hdr = packet + l2_len;
|
|
|
|
if (ol_flags & (PKT_TX_IP_CKSUM | PKT_TX_IPV4)) {
|
|
struct ipv4_hdr *iph = l3_hdr;
|
|
uint16_t cksum;
|
|
|
|
iph->hdr_checksum = 0;
|
|
cksum = rte_raw_cksum(iph, l3_len);
|
|
iph->hdr_checksum = (cksum == 0xffff) ? cksum : ~cksum;
|
|
}
|
|
if (ol_flags & PKT_TX_L4_MASK) {
|
|
uint16_t l4_len;
|
|
uint32_t cksum;
|
|
uint16_t *l4_cksum;
|
|
void *l4_hdr;
|
|
|
|
l4_hdr = packet + l2_len + l3_len;
|
|
if ((ol_flags & PKT_TX_L4_MASK) == PKT_TX_UDP_CKSUM)
|
|
l4_cksum = &((struct udp_hdr *)l4_hdr)->dgram_cksum;
|
|
else if ((ol_flags & PKT_TX_L4_MASK) == PKT_TX_TCP_CKSUM)
|
|
l4_cksum = &((struct tcp_hdr *)l4_hdr)->cksum;
|
|
else
|
|
return;
|
|
*l4_cksum = 0;
|
|
if (ol_flags & PKT_TX_IPV4) {
|
|
struct ipv4_hdr *iph = l3_hdr;
|
|
|
|
l4_len = rte_be_to_cpu_16(iph->total_length) - l3_len;
|
|
cksum = rte_ipv4_phdr_cksum(l3_hdr, 0);
|
|
} else {
|
|
struct ipv6_hdr *ip6h = l3_hdr;
|
|
|
|
/* payload_len does not include ext headers */
|
|
l4_len = rte_be_to_cpu_16(ip6h->payload_len) -
|
|
l3_len + sizeof(struct ipv6_hdr);
|
|
cksum = rte_ipv6_phdr_cksum(l3_hdr, 0);
|
|
}
|
|
cksum += rte_raw_cksum(l4_hdr, l4_len);
|
|
cksum = ((cksum & 0xffff0000) >> 16) + (cksum & 0xffff);
|
|
cksum = (~cksum) & 0xffff;
|
|
if (cksum == 0)
|
|
cksum = 0xffff;
|
|
*l4_cksum = cksum;
|
|
}
|
|
}
|
|
|
|
/* Callback to handle sending packets from the tap interface
|
|
*/
|
|
static uint16_t
|
|
pmd_tx_burst(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
|
|
{
|
|
struct tx_queue *txq = queue;
|
|
uint16_t num_tx = 0;
|
|
unsigned long num_tx_bytes = 0;
|
|
uint32_t max_size;
|
|
int i;
|
|
|
|
if (unlikely(nb_pkts == 0))
|
|
return 0;
|
|
|
|
max_size = *txq->mtu + (ETHER_HDR_LEN + ETHER_CRC_LEN + 4);
|
|
for (i = 0; i < nb_pkts; i++) {
|
|
struct rte_mbuf *mbuf = bufs[num_tx];
|
|
struct iovec iovecs[mbuf->nb_segs + 1];
|
|
struct tun_pi pi = { .flags = 0 };
|
|
struct rte_mbuf *seg = mbuf;
|
|
char m_copy[mbuf->data_len];
|
|
int n;
|
|
int j;
|
|
|
|
/* stats.errs will be incremented */
|
|
if (rte_pktmbuf_pkt_len(mbuf) > max_size)
|
|
break;
|
|
|
|
iovecs[0].iov_base = π
|
|
iovecs[0].iov_len = sizeof(pi);
|
|
for (j = 1; j <= mbuf->nb_segs; j++) {
|
|
iovecs[j].iov_len = rte_pktmbuf_data_len(seg);
|
|
iovecs[j].iov_base =
|
|
rte_pktmbuf_mtod(seg, void *);
|
|
seg = seg->next;
|
|
}
|
|
if (mbuf->ol_flags & (PKT_TX_IP_CKSUM | PKT_TX_IPV4) ||
|
|
(mbuf->ol_flags & PKT_TX_L4_MASK) == PKT_TX_UDP_CKSUM ||
|
|
(mbuf->ol_flags & PKT_TX_L4_MASK) == PKT_TX_TCP_CKSUM) {
|
|
/* Support only packets with all data in the same seg */
|
|
if (mbuf->nb_segs > 1)
|
|
break;
|
|
/* To change checksums, work on a copy of data. */
|
|
rte_memcpy(m_copy, rte_pktmbuf_mtod(mbuf, void *),
|
|
rte_pktmbuf_data_len(mbuf));
|
|
tap_tx_offload(m_copy, mbuf->ol_flags,
|
|
mbuf->l2_len, mbuf->l3_len);
|
|
iovecs[1].iov_base = m_copy;
|
|
}
|
|
/* copy the tx frame data */
|
|
n = writev(txq->fd, iovecs, mbuf->nb_segs + 1);
|
|
if (n <= 0)
|
|
break;
|
|
|
|
num_tx++;
|
|
num_tx_bytes += mbuf->pkt_len;
|
|
rte_pktmbuf_free(mbuf);
|
|
}
|
|
|
|
txq->stats.opackets += num_tx;
|
|
txq->stats.errs += nb_pkts - num_tx;
|
|
txq->stats.obytes += num_tx_bytes;
|
|
|
|
return num_tx;
|
|
}
|
|
|
|
static const char *
|
|
tap_ioctl_req2str(unsigned long request)
|
|
{
|
|
switch (request) {
|
|
case SIOCSIFFLAGS:
|
|
return "SIOCSIFFLAGS";
|
|
case SIOCGIFFLAGS:
|
|
return "SIOCGIFFLAGS";
|
|
case SIOCGIFHWADDR:
|
|
return "SIOCGIFHWADDR";
|
|
case SIOCSIFHWADDR:
|
|
return "SIOCSIFHWADDR";
|
|
case SIOCSIFMTU:
|
|
return "SIOCSIFMTU";
|
|
}
|
|
return "UNKNOWN";
|
|
}
|
|
|
|
static int
|
|
tap_ioctl(struct pmd_internals *pmd, unsigned long request,
|
|
struct ifreq *ifr, int set, enum ioctl_mode mode)
|
|
{
|
|
short req_flags = ifr->ifr_flags;
|
|
int remote = pmd->remote_if_index &&
|
|
(mode == REMOTE_ONLY || mode == LOCAL_AND_REMOTE);
|
|
|
|
if (!pmd->remote_if_index && mode == REMOTE_ONLY)
|
|
return 0;
|
|
/*
|
|
* If there is a remote netdevice, apply ioctl on it, then apply it on
|
|
* the tap netdevice.
|
|
*/
|
|
apply:
|
|
if (remote)
|
|
snprintf(ifr->ifr_name, IFNAMSIZ, "%s", pmd->remote_iface);
|
|
else if (mode == LOCAL_ONLY || mode == LOCAL_AND_REMOTE)
|
|
snprintf(ifr->ifr_name, IFNAMSIZ, "%s", pmd->name);
|
|
switch (request) {
|
|
case SIOCSIFFLAGS:
|
|
/* fetch current flags to leave other flags untouched */
|
|
if (ioctl(pmd->ioctl_sock, SIOCGIFFLAGS, ifr) < 0)
|
|
goto error;
|
|
if (set)
|
|
ifr->ifr_flags |= req_flags;
|
|
else
|
|
ifr->ifr_flags &= ~req_flags;
|
|
break;
|
|
case SIOCGIFFLAGS:
|
|
case SIOCGIFHWADDR:
|
|
case SIOCSIFHWADDR:
|
|
case SIOCSIFMTU:
|
|
break;
|
|
default:
|
|
RTE_ASSERT(!"unsupported request type: must not happen");
|
|
}
|
|
if (ioctl(pmd->ioctl_sock, request, ifr) < 0)
|
|
goto error;
|
|
if (remote-- && mode == LOCAL_AND_REMOTE)
|
|
goto apply;
|
|
return 0;
|
|
|
|
error:
|
|
RTE_LOG(DEBUG, PMD, "%s: %s(%s) failed: %s(%d)\n", ifr->ifr_name,
|
|
__func__, tap_ioctl_req2str(request), strerror(errno), errno);
|
|
return -errno;
|
|
}
|
|
|
|
static int
|
|
tap_link_set_down(struct rte_eth_dev *dev)
|
|
{
|
|
struct pmd_internals *pmd = dev->data->dev_private;
|
|
struct ifreq ifr = { .ifr_flags = IFF_UP };
|
|
|
|
dev->data->dev_link.link_status = ETH_LINK_DOWN;
|
|
return tap_ioctl(pmd, SIOCSIFFLAGS, &ifr, 0, LOCAL_AND_REMOTE);
|
|
}
|
|
|
|
static int
|
|
tap_link_set_up(struct rte_eth_dev *dev)
|
|
{
|
|
struct pmd_internals *pmd = dev->data->dev_private;
|
|
struct ifreq ifr = { .ifr_flags = IFF_UP };
|
|
|
|
dev->data->dev_link.link_status = ETH_LINK_UP;
|
|
return tap_ioctl(pmd, SIOCSIFFLAGS, &ifr, 1, LOCAL_AND_REMOTE);
|
|
}
|
|
|
|
static int
|
|
tap_dev_start(struct rte_eth_dev *dev)
|
|
{
|
|
int err;
|
|
|
|
err = tap_intr_handle_set(dev, 1);
|
|
if (err)
|
|
return err;
|
|
return tap_link_set_up(dev);
|
|
}
|
|
|
|
/* This function gets called when the current port gets stopped.
|
|
*/
|
|
static void
|
|
tap_dev_stop(struct rte_eth_dev *dev)
|
|
{
|
|
tap_intr_handle_set(dev, 0);
|
|
tap_link_set_down(dev);
|
|
}
|
|
|
|
static int
|
|
tap_dev_configure(struct rte_eth_dev *dev __rte_unused)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static uint32_t
|
|
tap_dev_speed_capa(void)
|
|
{
|
|
uint32_t speed = pmd_link.link_speed;
|
|
uint32_t capa = 0;
|
|
|
|
if (speed >= ETH_SPEED_NUM_10M)
|
|
capa |= ETH_LINK_SPEED_10M;
|
|
if (speed >= ETH_SPEED_NUM_100M)
|
|
capa |= ETH_LINK_SPEED_100M;
|
|
if (speed >= ETH_SPEED_NUM_1G)
|
|
capa |= ETH_LINK_SPEED_1G;
|
|
if (speed >= ETH_SPEED_NUM_5G)
|
|
capa |= ETH_LINK_SPEED_2_5G;
|
|
if (speed >= ETH_SPEED_NUM_5G)
|
|
capa |= ETH_LINK_SPEED_5G;
|
|
if (speed >= ETH_SPEED_NUM_10G)
|
|
capa |= ETH_LINK_SPEED_10G;
|
|
if (speed >= ETH_SPEED_NUM_20G)
|
|
capa |= ETH_LINK_SPEED_20G;
|
|
if (speed >= ETH_SPEED_NUM_25G)
|
|
capa |= ETH_LINK_SPEED_25G;
|
|
if (speed >= ETH_SPEED_NUM_40G)
|
|
capa |= ETH_LINK_SPEED_40G;
|
|
if (speed >= ETH_SPEED_NUM_50G)
|
|
capa |= ETH_LINK_SPEED_50G;
|
|
if (speed >= ETH_SPEED_NUM_56G)
|
|
capa |= ETH_LINK_SPEED_56G;
|
|
if (speed >= ETH_SPEED_NUM_100G)
|
|
capa |= ETH_LINK_SPEED_100G;
|
|
|
|
return capa;
|
|
}
|
|
|
|
static void
|
|
tap_dev_info(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
|
|
{
|
|
struct pmd_internals *internals = dev->data->dev_private;
|
|
|
|
dev_info->if_index = internals->if_index;
|
|
dev_info->max_mac_addrs = 1;
|
|
dev_info->max_rx_pktlen = (uint32_t)ETHER_MAX_VLAN_FRAME_LEN;
|
|
dev_info->max_rx_queues = internals->nb_queues;
|
|
dev_info->max_tx_queues = internals->nb_queues;
|
|
dev_info->min_rx_bufsize = 0;
|
|
dev_info->pci_dev = NULL;
|
|
dev_info->speed_capa = tap_dev_speed_capa();
|
|
dev_info->rx_offload_capa = (DEV_RX_OFFLOAD_IPV4_CKSUM |
|
|
DEV_RX_OFFLOAD_UDP_CKSUM |
|
|
DEV_RX_OFFLOAD_TCP_CKSUM);
|
|
dev_info->tx_offload_capa =
|
|
(DEV_TX_OFFLOAD_IPV4_CKSUM |
|
|
DEV_TX_OFFLOAD_UDP_CKSUM |
|
|
DEV_TX_OFFLOAD_TCP_CKSUM);
|
|
}
|
|
|
|
static void
|
|
tap_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *tap_stats)
|
|
{
|
|
unsigned int i, imax;
|
|
unsigned long rx_total = 0, tx_total = 0, tx_err_total = 0;
|
|
unsigned long rx_bytes_total = 0, tx_bytes_total = 0;
|
|
unsigned long rx_nombuf = 0, ierrors = 0;
|
|
const struct pmd_internals *pmd = dev->data->dev_private;
|
|
|
|
imax = (pmd->nb_queues < RTE_ETHDEV_QUEUE_STAT_CNTRS) ?
|
|
pmd->nb_queues : RTE_ETHDEV_QUEUE_STAT_CNTRS;
|
|
|
|
for (i = 0; i < imax; i++) {
|
|
tap_stats->q_ipackets[i] = pmd->rxq[i].stats.ipackets;
|
|
tap_stats->q_ibytes[i] = pmd->rxq[i].stats.ibytes;
|
|
rx_total += tap_stats->q_ipackets[i];
|
|
rx_bytes_total += tap_stats->q_ibytes[i];
|
|
rx_nombuf += pmd->rxq[i].stats.rx_nombuf;
|
|
ierrors += pmd->rxq[i].stats.ierrors;
|
|
|
|
tap_stats->q_opackets[i] = pmd->txq[i].stats.opackets;
|
|
tap_stats->q_errors[i] = pmd->txq[i].stats.errs;
|
|
tap_stats->q_obytes[i] = pmd->txq[i].stats.obytes;
|
|
tx_total += tap_stats->q_opackets[i];
|
|
tx_err_total += tap_stats->q_errors[i];
|
|
tx_bytes_total += tap_stats->q_obytes[i];
|
|
}
|
|
|
|
tap_stats->ipackets = rx_total;
|
|
tap_stats->ibytes = rx_bytes_total;
|
|
tap_stats->ierrors = ierrors;
|
|
tap_stats->rx_nombuf = rx_nombuf;
|
|
tap_stats->opackets = tx_total;
|
|
tap_stats->oerrors = tx_err_total;
|
|
tap_stats->obytes = tx_bytes_total;
|
|
}
|
|
|
|
static void
|
|
tap_stats_reset(struct rte_eth_dev *dev)
|
|
{
|
|
int i;
|
|
struct pmd_internals *pmd = dev->data->dev_private;
|
|
|
|
for (i = 0; i < pmd->nb_queues; i++) {
|
|
pmd->rxq[i].stats.ipackets = 0;
|
|
pmd->rxq[i].stats.ibytes = 0;
|
|
pmd->rxq[i].stats.ierrors = 0;
|
|
pmd->rxq[i].stats.rx_nombuf = 0;
|
|
|
|
pmd->txq[i].stats.opackets = 0;
|
|
pmd->txq[i].stats.errs = 0;
|
|
pmd->txq[i].stats.obytes = 0;
|
|
}
|
|
}
|
|
|
|
static void
|
|
tap_dev_close(struct rte_eth_dev *dev)
|
|
{
|
|
int i;
|
|
struct pmd_internals *internals = dev->data->dev_private;
|
|
|
|
tap_link_set_down(dev);
|
|
tap_flow_flush(dev, NULL);
|
|
tap_flow_implicit_flush(internals, NULL);
|
|
|
|
for (i = 0; i < internals->nb_queues; i++) {
|
|
if (internals->rxq[i].fd != -1)
|
|
close(internals->rxq[i].fd);
|
|
internals->rxq[i].fd = -1;
|
|
internals->txq[i].fd = -1;
|
|
}
|
|
}
|
|
|
|
static void
|
|
tap_rx_queue_release(void *queue)
|
|
{
|
|
struct rx_queue *rxq = queue;
|
|
|
|
if (rxq && (rxq->fd > 0)) {
|
|
close(rxq->fd);
|
|
rxq->fd = -1;
|
|
rte_pktmbuf_free(rxq->pool);
|
|
rte_free(rxq->iovecs);
|
|
rxq->pool = NULL;
|
|
rxq->iovecs = NULL;
|
|
}
|
|
}
|
|
|
|
static void
|
|
tap_tx_queue_release(void *queue)
|
|
{
|
|
struct tx_queue *txq = queue;
|
|
|
|
if (txq && (txq->fd > 0)) {
|
|
close(txq->fd);
|
|
txq->fd = -1;
|
|
}
|
|
}
|
|
|
|
static int
|
|
tap_link_update(struct rte_eth_dev *dev, int wait_to_complete __rte_unused)
|
|
{
|
|
struct rte_eth_link *dev_link = &dev->data->dev_link;
|
|
struct pmd_internals *pmd = dev->data->dev_private;
|
|
struct ifreq ifr = { .ifr_flags = 0 };
|
|
|
|
if (pmd->remote_if_index) {
|
|
tap_ioctl(pmd, SIOCGIFFLAGS, &ifr, 0, REMOTE_ONLY);
|
|
if (!(ifr.ifr_flags & IFF_UP) ||
|
|
!(ifr.ifr_flags & IFF_RUNNING)) {
|
|
dev_link->link_status = ETH_LINK_DOWN;
|
|
return 0;
|
|
}
|
|
}
|
|
tap_ioctl(pmd, SIOCGIFFLAGS, &ifr, 0, LOCAL_ONLY);
|
|
dev_link->link_status =
|
|
((ifr.ifr_flags & IFF_UP) && (ifr.ifr_flags & IFF_RUNNING) ?
|
|
ETH_LINK_UP :
|
|
ETH_LINK_DOWN);
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
tap_promisc_enable(struct rte_eth_dev *dev)
|
|
{
|
|
struct pmd_internals *pmd = dev->data->dev_private;
|
|
struct ifreq ifr = { .ifr_flags = IFF_PROMISC };
|
|
|
|
dev->data->promiscuous = 1;
|
|
tap_ioctl(pmd, SIOCSIFFLAGS, &ifr, 1, LOCAL_AND_REMOTE);
|
|
if (pmd->remote_if_index)
|
|
tap_flow_implicit_create(pmd, TAP_REMOTE_PROMISC);
|
|
}
|
|
|
|
static void
|
|
tap_promisc_disable(struct rte_eth_dev *dev)
|
|
{
|
|
struct pmd_internals *pmd = dev->data->dev_private;
|
|
struct ifreq ifr = { .ifr_flags = IFF_PROMISC };
|
|
|
|
dev->data->promiscuous = 0;
|
|
tap_ioctl(pmd, SIOCSIFFLAGS, &ifr, 0, LOCAL_AND_REMOTE);
|
|
if (pmd->remote_if_index)
|
|
tap_flow_implicit_destroy(pmd, TAP_REMOTE_PROMISC);
|
|
}
|
|
|
|
static void
|
|
tap_allmulti_enable(struct rte_eth_dev *dev)
|
|
{
|
|
struct pmd_internals *pmd = dev->data->dev_private;
|
|
struct ifreq ifr = { .ifr_flags = IFF_ALLMULTI };
|
|
|
|
dev->data->all_multicast = 1;
|
|
tap_ioctl(pmd, SIOCSIFFLAGS, &ifr, 1, LOCAL_AND_REMOTE);
|
|
if (pmd->remote_if_index)
|
|
tap_flow_implicit_create(pmd, TAP_REMOTE_ALLMULTI);
|
|
}
|
|
|
|
static void
|
|
tap_allmulti_disable(struct rte_eth_dev *dev)
|
|
{
|
|
struct pmd_internals *pmd = dev->data->dev_private;
|
|
struct ifreq ifr = { .ifr_flags = IFF_ALLMULTI };
|
|
|
|
dev->data->all_multicast = 0;
|
|
tap_ioctl(pmd, SIOCSIFFLAGS, &ifr, 0, LOCAL_AND_REMOTE);
|
|
if (pmd->remote_if_index)
|
|
tap_flow_implicit_destroy(pmd, TAP_REMOTE_ALLMULTI);
|
|
}
|
|
|
|
static void
|
|
tap_mac_set(struct rte_eth_dev *dev, struct ether_addr *mac_addr)
|
|
{
|
|
struct pmd_internals *pmd = dev->data->dev_private;
|
|
enum ioctl_mode mode = LOCAL_ONLY;
|
|
struct ifreq ifr;
|
|
|
|
if (is_zero_ether_addr(mac_addr)) {
|
|
RTE_LOG(ERR, PMD, "%s: can't set an empty MAC address\n",
|
|
dev->data->name);
|
|
return;
|
|
}
|
|
/* Check the actual current MAC address on the tap netdevice */
|
|
if (tap_ioctl(pmd, SIOCGIFHWADDR, &ifr, 0, LOCAL_ONLY) < 0)
|
|
return;
|
|
if (is_same_ether_addr((struct ether_addr *)&ifr.ifr_hwaddr.sa_data,
|
|
mac_addr))
|
|
return;
|
|
/* Check the current MAC address on the remote */
|
|
if (tap_ioctl(pmd, SIOCGIFHWADDR, &ifr, 0, REMOTE_ONLY) < 0)
|
|
return;
|
|
if (!is_same_ether_addr((struct ether_addr *)&ifr.ifr_hwaddr.sa_data,
|
|
mac_addr))
|
|
mode = LOCAL_AND_REMOTE;
|
|
ifr.ifr_hwaddr.sa_family = AF_LOCAL;
|
|
rte_memcpy(ifr.ifr_hwaddr.sa_data, mac_addr, ETHER_ADDR_LEN);
|
|
if (tap_ioctl(pmd, SIOCSIFHWADDR, &ifr, 1, mode) < 0)
|
|
return;
|
|
rte_memcpy(&pmd->eth_addr, mac_addr, ETHER_ADDR_LEN);
|
|
if (pmd->remote_if_index) {
|
|
/* Replace MAC redirection rule after a MAC change */
|
|
if (tap_flow_implicit_destroy(pmd, TAP_REMOTE_LOCAL_MAC) < 0) {
|
|
RTE_LOG(ERR, PMD,
|
|
"%s: Couldn't delete MAC redirection rule\n",
|
|
dev->data->name);
|
|
return;
|
|
}
|
|
if (tap_flow_implicit_create(pmd, TAP_REMOTE_LOCAL_MAC) < 0)
|
|
RTE_LOG(ERR, PMD,
|
|
"%s: Couldn't add MAC redirection rule\n",
|
|
dev->data->name);
|
|
}
|
|
}
|
|
|
|
static int
|
|
tap_setup_queue(struct rte_eth_dev *dev,
|
|
struct pmd_internals *internals,
|
|
uint16_t qid)
|
|
{
|
|
struct pmd_internals *pmd = dev->data->dev_private;
|
|
struct rx_queue *rx = &internals->rxq[qid];
|
|
struct tx_queue *tx = &internals->txq[qid];
|
|
int fd = rx->fd == -1 ? tx->fd : rx->fd;
|
|
|
|
if (fd == -1) {
|
|
RTE_LOG(INFO, PMD, "Add queue to TAP %s for qid %d\n",
|
|
pmd->name, qid);
|
|
fd = tun_alloc(pmd);
|
|
if (fd < 0) {
|
|
RTE_LOG(ERR, PMD, "%s: tun_alloc() failed.\n",
|
|
pmd->name);
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
rx->fd = fd;
|
|
tx->fd = fd;
|
|
tx->mtu = &dev->data->mtu;
|
|
rx->rxmode = &dev->data->dev_conf.rxmode;
|
|
|
|
return fd;
|
|
}
|
|
|
|
static int
|
|
tap_rx_queue_setup(struct rte_eth_dev *dev,
|
|
uint16_t rx_queue_id,
|
|
uint16_t nb_rx_desc,
|
|
unsigned int socket_id,
|
|
const struct rte_eth_rxconf *rx_conf __rte_unused,
|
|
struct rte_mempool *mp)
|
|
{
|
|
struct pmd_internals *internals = dev->data->dev_private;
|
|
struct rx_queue *rxq = &internals->rxq[rx_queue_id];
|
|
struct rte_mbuf **tmp = &rxq->pool;
|
|
long iov_max = sysconf(_SC_IOV_MAX);
|
|
uint16_t nb_desc = RTE_MIN(nb_rx_desc, iov_max - 1);
|
|
struct iovec (*iovecs)[nb_desc + 1];
|
|
int data_off = RTE_PKTMBUF_HEADROOM;
|
|
int ret = 0;
|
|
int fd;
|
|
int i;
|
|
|
|
if ((rx_queue_id >= internals->nb_queues) || !mp) {
|
|
RTE_LOG(WARNING, PMD,
|
|
"nb_queues %d too small or mempool NULL\n",
|
|
internals->nb_queues);
|
|
return -1;
|
|
}
|
|
|
|
rxq->mp = mp;
|
|
rxq->trigger_seen = 1; /* force initial burst */
|
|
rxq->in_port = dev->data->port_id;
|
|
rxq->nb_rx_desc = nb_desc;
|
|
iovecs = rte_zmalloc_socket(dev->data->name, sizeof(*iovecs), 0,
|
|
socket_id);
|
|
if (!iovecs) {
|
|
RTE_LOG(WARNING, PMD,
|
|
"%s: Couldn't allocate %d RX descriptors\n",
|
|
dev->data->name, nb_desc);
|
|
return -ENOMEM;
|
|
}
|
|
rxq->iovecs = iovecs;
|
|
|
|
dev->data->rx_queues[rx_queue_id] = rxq;
|
|
fd = tap_setup_queue(dev, internals, rx_queue_id);
|
|
if (fd == -1) {
|
|
ret = fd;
|
|
goto error;
|
|
}
|
|
|
|
(*rxq->iovecs)[0].iov_len = sizeof(struct tun_pi);
|
|
(*rxq->iovecs)[0].iov_base = &rxq->pi;
|
|
|
|
for (i = 1; i <= nb_desc; i++) {
|
|
*tmp = rte_pktmbuf_alloc(rxq->mp);
|
|
if (!*tmp) {
|
|
RTE_LOG(WARNING, PMD,
|
|
"%s: couldn't allocate memory for queue %d\n",
|
|
dev->data->name, rx_queue_id);
|
|
ret = -ENOMEM;
|
|
goto error;
|
|
}
|
|
(*rxq->iovecs)[i].iov_len = (*tmp)->buf_len - data_off;
|
|
(*rxq->iovecs)[i].iov_base =
|
|
(char *)(*tmp)->buf_addr + data_off;
|
|
data_off = 0;
|
|
tmp = &(*tmp)->next;
|
|
}
|
|
|
|
RTE_LOG(DEBUG, PMD, " RX TAP device name %s, qid %d on fd %d\n",
|
|
internals->name, rx_queue_id, internals->rxq[rx_queue_id].fd);
|
|
|
|
return 0;
|
|
|
|
error:
|
|
rte_pktmbuf_free(rxq->pool);
|
|
rxq->pool = NULL;
|
|
rte_free(rxq->iovecs);
|
|
rxq->iovecs = NULL;
|
|
return ret;
|
|
}
|
|
|
|
static int
|
|
tap_tx_queue_setup(struct rte_eth_dev *dev,
|
|
uint16_t tx_queue_id,
|
|
uint16_t nb_tx_desc __rte_unused,
|
|
unsigned int socket_id __rte_unused,
|
|
const struct rte_eth_txconf *tx_conf __rte_unused)
|
|
{
|
|
struct pmd_internals *internals = dev->data->dev_private;
|
|
int ret;
|
|
|
|
if (tx_queue_id >= internals->nb_queues)
|
|
return -1;
|
|
|
|
dev->data->tx_queues[tx_queue_id] = &internals->txq[tx_queue_id];
|
|
ret = tap_setup_queue(dev, internals, tx_queue_id);
|
|
if (ret == -1)
|
|
return -1;
|
|
|
|
RTE_LOG(DEBUG, PMD, " TX TAP device name %s, qid %d on fd %d\n",
|
|
internals->name, tx_queue_id, internals->txq[tx_queue_id].fd);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
tap_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
|
|
{
|
|
struct pmd_internals *pmd = dev->data->dev_private;
|
|
struct ifreq ifr = { .ifr_mtu = mtu };
|
|
int err = 0;
|
|
|
|
err = tap_ioctl(pmd, SIOCSIFMTU, &ifr, 1, LOCAL_AND_REMOTE);
|
|
if (!err)
|
|
dev->data->mtu = mtu;
|
|
|
|
return err;
|
|
}
|
|
|
|
static int
|
|
tap_set_mc_addr_list(struct rte_eth_dev *dev __rte_unused,
|
|
struct ether_addr *mc_addr_set __rte_unused,
|
|
uint32_t nb_mc_addr __rte_unused)
|
|
{
|
|
/*
|
|
* Nothing to do actually: the tap has no filtering whatsoever, every
|
|
* packet is received.
|
|
*/
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
tap_nl_msg_handler(struct nlmsghdr *nh, void *arg)
|
|
{
|
|
struct rte_eth_dev *dev = arg;
|
|
struct pmd_internals *pmd = dev->data->dev_private;
|
|
struct ifinfomsg *info = NLMSG_DATA(nh);
|
|
|
|
if (nh->nlmsg_type != RTM_NEWLINK ||
|
|
(info->ifi_index != pmd->if_index &&
|
|
info->ifi_index != pmd->remote_if_index))
|
|
return 0;
|
|
return tap_link_update(dev, 0);
|
|
}
|
|
|
|
static void
|
|
tap_dev_intr_handler(void *cb_arg)
|
|
{
|
|
struct rte_eth_dev *dev = cb_arg;
|
|
struct pmd_internals *pmd = dev->data->dev_private;
|
|
|
|
nl_recv(pmd->intr_handle.fd, tap_nl_msg_handler, dev);
|
|
}
|
|
|
|
static int
|
|
tap_intr_handle_set(struct rte_eth_dev *dev, int set)
|
|
{
|
|
struct pmd_internals *pmd = dev->data->dev_private;
|
|
|
|
/* In any case, disable interrupt if the conf is no longer there. */
|
|
if (!dev->data->dev_conf.intr_conf.lsc) {
|
|
if (pmd->intr_handle.fd != -1)
|
|
nl_final(pmd->intr_handle.fd);
|
|
rte_intr_callback_unregister(
|
|
&pmd->intr_handle, tap_dev_intr_handler, dev);
|
|
return 0;
|
|
}
|
|
if (set) {
|
|
pmd->intr_handle.fd = nl_init(RTMGRP_LINK);
|
|
if (unlikely(pmd->intr_handle.fd == -1))
|
|
return -EBADF;
|
|
return rte_intr_callback_register(
|
|
&pmd->intr_handle, tap_dev_intr_handler, dev);
|
|
}
|
|
nl_final(pmd->intr_handle.fd);
|
|
return rte_intr_callback_unregister(&pmd->intr_handle,
|
|
tap_dev_intr_handler, dev);
|
|
}
|
|
|
|
static const uint32_t*
|
|
tap_dev_supported_ptypes_get(struct rte_eth_dev *dev __rte_unused)
|
|
{
|
|
static const uint32_t ptypes[] = {
|
|
RTE_PTYPE_INNER_L2_ETHER,
|
|
RTE_PTYPE_INNER_L2_ETHER_VLAN,
|
|
RTE_PTYPE_INNER_L2_ETHER_QINQ,
|
|
RTE_PTYPE_INNER_L3_IPV4,
|
|
RTE_PTYPE_INNER_L3_IPV4_EXT,
|
|
RTE_PTYPE_INNER_L3_IPV6,
|
|
RTE_PTYPE_INNER_L3_IPV6_EXT,
|
|
RTE_PTYPE_INNER_L4_FRAG,
|
|
RTE_PTYPE_INNER_L4_UDP,
|
|
RTE_PTYPE_INNER_L4_TCP,
|
|
RTE_PTYPE_INNER_L4_SCTP,
|
|
RTE_PTYPE_L2_ETHER,
|
|
RTE_PTYPE_L2_ETHER_VLAN,
|
|
RTE_PTYPE_L2_ETHER_QINQ,
|
|
RTE_PTYPE_L3_IPV4,
|
|
RTE_PTYPE_L3_IPV4_EXT,
|
|
RTE_PTYPE_L3_IPV6_EXT,
|
|
RTE_PTYPE_L3_IPV6,
|
|
RTE_PTYPE_L4_FRAG,
|
|
RTE_PTYPE_L4_UDP,
|
|
RTE_PTYPE_L4_TCP,
|
|
RTE_PTYPE_L4_SCTP,
|
|
};
|
|
|
|
return ptypes;
|
|
}
|
|
|
|
static int
|
|
tap_flow_ctrl_get(struct rte_eth_dev *dev __rte_unused,
|
|
struct rte_eth_fc_conf *fc_conf)
|
|
{
|
|
fc_conf->mode = RTE_FC_NONE;
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
tap_flow_ctrl_set(struct rte_eth_dev *dev __rte_unused,
|
|
struct rte_eth_fc_conf *fc_conf)
|
|
{
|
|
if (fc_conf->mode != RTE_FC_NONE)
|
|
return -ENOTSUP;
|
|
return 0;
|
|
}
|
|
|
|
static const struct eth_dev_ops ops = {
|
|
.dev_start = tap_dev_start,
|
|
.dev_stop = tap_dev_stop,
|
|
.dev_close = tap_dev_close,
|
|
.dev_configure = tap_dev_configure,
|
|
.dev_infos_get = tap_dev_info,
|
|
.rx_queue_setup = tap_rx_queue_setup,
|
|
.tx_queue_setup = tap_tx_queue_setup,
|
|
.rx_queue_release = tap_rx_queue_release,
|
|
.tx_queue_release = tap_tx_queue_release,
|
|
.flow_ctrl_get = tap_flow_ctrl_get,
|
|
.flow_ctrl_set = tap_flow_ctrl_set,
|
|
.link_update = tap_link_update,
|
|
.dev_set_link_up = tap_link_set_up,
|
|
.dev_set_link_down = tap_link_set_down,
|
|
.promiscuous_enable = tap_promisc_enable,
|
|
.promiscuous_disable = tap_promisc_disable,
|
|
.allmulticast_enable = tap_allmulti_enable,
|
|
.allmulticast_disable = tap_allmulti_disable,
|
|
.mac_addr_set = tap_mac_set,
|
|
.mtu_set = tap_mtu_set,
|
|
.set_mc_addr_list = tap_set_mc_addr_list,
|
|
.stats_get = tap_stats_get,
|
|
.stats_reset = tap_stats_reset,
|
|
.dev_supported_ptypes_get = tap_dev_supported_ptypes_get,
|
|
.filter_ctrl = tap_dev_filter_ctrl,
|
|
};
|
|
|
|
static int
|
|
tap_kernel_support(struct pmd_internals *pmd)
|
|
{
|
|
struct utsname utsname;
|
|
int ver[3];
|
|
|
|
if (uname(&utsname) == -1 ||
|
|
sscanf(utsname.release, "%d.%d.%d",
|
|
&ver[0], &ver[1], &ver[2]) != 3)
|
|
return 0;
|
|
if (KERNEL_VERSION(ver[0], ver[1], ver[2]) >= FLOWER_KERNEL_VERSION)
|
|
pmd->flower_support = 1;
|
|
if (KERNEL_VERSION(ver[0], ver[1], ver[2]) >=
|
|
FLOWER_VLAN_KERNEL_VERSION)
|
|
pmd->flower_vlan_support = 1;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
eth_dev_tap_create(struct rte_vdev_device *vdev, char *tap_name,
|
|
char *remote_iface, int fixed_mac_type)
|
|
{
|
|
int numa_node = rte_socket_id();
|
|
struct rte_eth_dev *dev;
|
|
struct pmd_internals *pmd;
|
|
struct rte_eth_dev_data *data;
|
|
struct ifreq ifr;
|
|
int i;
|
|
|
|
RTE_LOG(DEBUG, PMD, " TAP device on numa %u\n", rte_socket_id());
|
|
|
|
data = rte_zmalloc_socket(tap_name, sizeof(*data), 0, numa_node);
|
|
if (!data) {
|
|
RTE_LOG(ERR, PMD, "TAP Failed to allocate data\n");
|
|
goto error_exit;
|
|
}
|
|
|
|
dev = rte_eth_vdev_allocate(vdev, sizeof(*pmd));
|
|
if (!dev) {
|
|
RTE_LOG(ERR, PMD, "TAP Unable to allocate device struct\n");
|
|
goto error_exit;
|
|
}
|
|
|
|
pmd = dev->data->dev_private;
|
|
snprintf(pmd->name, sizeof(pmd->name), "%s", tap_name);
|
|
pmd->nb_queues = RTE_PMD_TAP_MAX_QUEUES;
|
|
|
|
pmd->ioctl_sock = socket(AF_INET, SOCK_DGRAM, 0);
|
|
if (pmd->ioctl_sock == -1) {
|
|
RTE_LOG(ERR, PMD,
|
|
"TAP Unable to get a socket for management: %s\n",
|
|
strerror(errno));
|
|
goto error_exit;
|
|
}
|
|
|
|
/* Setup some default values */
|
|
rte_memcpy(data, dev->data, sizeof(*data));
|
|
data->dev_private = pmd;
|
|
data->dev_flags = RTE_ETH_DEV_DETACHABLE | RTE_ETH_DEV_INTR_LSC;
|
|
data->numa_node = numa_node;
|
|
|
|
data->dev_link = pmd_link;
|
|
data->mac_addrs = &pmd->eth_addr;
|
|
data->nb_rx_queues = pmd->nb_queues;
|
|
data->nb_tx_queues = pmd->nb_queues;
|
|
|
|
dev->data = data;
|
|
dev->dev_ops = &ops;
|
|
dev->rx_pkt_burst = pmd_rx_burst;
|
|
dev->tx_pkt_burst = pmd_tx_burst;
|
|
|
|
pmd->intr_handle.type = RTE_INTR_HANDLE_EXT;
|
|
pmd->intr_handle.fd = -1;
|
|
|
|
/* Presetup the fds to -1 as being not valid */
|
|
for (i = 0; i < RTE_PMD_TAP_MAX_QUEUES; i++) {
|
|
pmd->rxq[i].fd = -1;
|
|
pmd->txq[i].fd = -1;
|
|
}
|
|
|
|
if (fixed_mac_type) {
|
|
/* fixed mac = 00:64:74:61:70:<iface_idx> */
|
|
static int iface_idx;
|
|
char mac[ETHER_ADDR_LEN] = "\0dtap";
|
|
|
|
mac[ETHER_ADDR_LEN - 1] = iface_idx++;
|
|
rte_memcpy(&pmd->eth_addr, mac, ETHER_ADDR_LEN);
|
|
} else {
|
|
eth_random_addr((uint8_t *)&pmd->eth_addr);
|
|
}
|
|
|
|
/* Immediately create the netdevice (this will create the 1st queue). */
|
|
if (tap_setup_queue(dev, pmd, 0) == -1)
|
|
goto error_exit;
|
|
|
|
ifr.ifr_mtu = dev->data->mtu;
|
|
if (tap_ioctl(pmd, SIOCSIFMTU, &ifr, 1, LOCAL_AND_REMOTE) < 0)
|
|
goto error_exit;
|
|
|
|
memset(&ifr, 0, sizeof(struct ifreq));
|
|
ifr.ifr_hwaddr.sa_family = AF_LOCAL;
|
|
rte_memcpy(ifr.ifr_hwaddr.sa_data, &pmd->eth_addr, ETHER_ADDR_LEN);
|
|
if (tap_ioctl(pmd, SIOCSIFHWADDR, &ifr, 0, LOCAL_ONLY) < 0)
|
|
goto error_exit;
|
|
|
|
tap_kernel_support(pmd);
|
|
if (!pmd->flower_support) {
|
|
if (remote_iface[0]) {
|
|
RTE_LOG(ERR, PMD,
|
|
"%s: kernel does not support TC rules, required for remote feature.",
|
|
pmd->name);
|
|
goto error_exit;
|
|
} else {
|
|
RTE_LOG(INFO, PMD,
|
|
"%s: kernel too old for Flow API support.\n",
|
|
pmd->name);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Set up everything related to rte_flow:
|
|
* - netlink socket
|
|
* - tap / remote if_index
|
|
* - mandatory QDISCs
|
|
* - rte_flow actual/implicit lists
|
|
* - implicit rules
|
|
*/
|
|
pmd->nlsk_fd = nl_init(0);
|
|
if (pmd->nlsk_fd == -1) {
|
|
RTE_LOG(WARNING, PMD, "%s: failed to create netlink socket.",
|
|
pmd->name);
|
|
goto disable_rte_flow;
|
|
}
|
|
pmd->if_index = if_nametoindex(pmd->name);
|
|
if (!pmd->if_index) {
|
|
RTE_LOG(ERR, PMD, "%s: failed to get if_index.", pmd->name);
|
|
goto disable_rte_flow;
|
|
}
|
|
if (qdisc_create_multiq(pmd->nlsk_fd, pmd->if_index) < 0) {
|
|
RTE_LOG(ERR, PMD, "%s: failed to create multiq qdisc.",
|
|
pmd->name);
|
|
goto disable_rte_flow;
|
|
}
|
|
if (qdisc_create_ingress(pmd->nlsk_fd, pmd->if_index) < 0) {
|
|
RTE_LOG(ERR, PMD, "%s: failed to create ingress qdisc.",
|
|
pmd->name);
|
|
goto disable_rte_flow;
|
|
}
|
|
LIST_INIT(&pmd->flows);
|
|
|
|
if (strlen(remote_iface)) {
|
|
pmd->remote_if_index = if_nametoindex(remote_iface);
|
|
if (!pmd->remote_if_index) {
|
|
RTE_LOG(ERR, PMD, "%s: failed to get %s if_index.",
|
|
pmd->name, remote_iface);
|
|
goto error_remote;
|
|
}
|
|
snprintf(pmd->remote_iface, RTE_ETH_NAME_MAX_LEN,
|
|
"%s", remote_iface);
|
|
if (tap_ioctl(pmd, SIOCGIFHWADDR, &ifr, 0, REMOTE_ONLY) < 0) {
|
|
RTE_LOG(ERR, PMD, "%s: failed to get %s MAC address.",
|
|
pmd->name, pmd->remote_iface);
|
|
goto error_remote;
|
|
}
|
|
rte_memcpy(&pmd->eth_addr, ifr.ifr_hwaddr.sa_data,
|
|
ETHER_ADDR_LEN);
|
|
/* The desired MAC is already in ifreq after SIOCGIFHWADDR. */
|
|
if (tap_ioctl(pmd, SIOCSIFHWADDR, &ifr, 0, LOCAL_ONLY) < 0) {
|
|
RTE_LOG(ERR, PMD, "%s: failed to get %s MAC address.",
|
|
pmd->name, remote_iface);
|
|
goto error_remote;
|
|
}
|
|
|
|
/*
|
|
* Flush usually returns negative value because it tries to
|
|
* delete every QDISC (and on a running device, one QDISC at
|
|
* least is needed). Ignore negative return value.
|
|
*/
|
|
qdisc_flush(pmd->nlsk_fd, pmd->remote_if_index);
|
|
if (qdisc_create_ingress(pmd->nlsk_fd,
|
|
pmd->remote_if_index) < 0) {
|
|
RTE_LOG(ERR, PMD, "%s: failed to create ingress qdisc.",
|
|
pmd->remote_iface);
|
|
goto error_remote;
|
|
}
|
|
LIST_INIT(&pmd->implicit_flows);
|
|
if (tap_flow_implicit_create(pmd, TAP_REMOTE_TX) < 0 ||
|
|
tap_flow_implicit_create(pmd, TAP_REMOTE_LOCAL_MAC) < 0 ||
|
|
tap_flow_implicit_create(pmd, TAP_REMOTE_BROADCAST) < 0 ||
|
|
tap_flow_implicit_create(pmd, TAP_REMOTE_BROADCASTV6) < 0) {
|
|
RTE_LOG(ERR, PMD,
|
|
"%s: failed to create implicit rules.",
|
|
pmd->name);
|
|
goto error_remote;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
|
|
disable_rte_flow:
|
|
RTE_LOG(ERR, PMD, " Disabling rte flow support: %s(%d)\n",
|
|
strerror(errno), errno);
|
|
if (strlen(remote_iface)) {
|
|
RTE_LOG(ERR, PMD, "Remote feature requires flow support.\n");
|
|
goto error_exit;
|
|
}
|
|
pmd->flower_support = 0;
|
|
return 0;
|
|
|
|
error_remote:
|
|
RTE_LOG(ERR, PMD, " Can't set up remote feature: %s(%d)\n",
|
|
strerror(errno), errno);
|
|
tap_flow_implicit_flush(pmd, NULL);
|
|
|
|
error_exit:
|
|
RTE_LOG(ERR, PMD, "TAP Unable to initialize %s\n",
|
|
rte_vdev_device_name(vdev));
|
|
|
|
rte_free(data);
|
|
return -EINVAL;
|
|
}
|
|
|
|
static int
|
|
set_interface_name(const char *key __rte_unused,
|
|
const char *value,
|
|
void *extra_args)
|
|
{
|
|
char *name = (char *)extra_args;
|
|
|
|
if (value)
|
|
snprintf(name, RTE_ETH_NAME_MAX_LEN - 1, "%s", value);
|
|
else
|
|
snprintf(name, RTE_ETH_NAME_MAX_LEN - 1, "%s%d",
|
|
DEFAULT_TAP_NAME, (tap_unit - 1));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
set_interface_speed(const char *key __rte_unused,
|
|
const char *value,
|
|
void *extra_args)
|
|
{
|
|
*(int *)extra_args = (value) ? atoi(value) : ETH_SPEED_NUM_10G;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
set_remote_iface(const char *key __rte_unused,
|
|
const char *value,
|
|
void *extra_args)
|
|
{
|
|
char *name = (char *)extra_args;
|
|
|
|
if (value)
|
|
snprintf(name, RTE_ETH_NAME_MAX_LEN, "%s", value);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
set_mac_type(const char *key __rte_unused,
|
|
const char *value,
|
|
void *extra_args)
|
|
{
|
|
if (value &&
|
|
!strncasecmp(ETH_TAP_MAC_FIXED, value, strlen(ETH_TAP_MAC_FIXED)))
|
|
*(int *)extra_args = 1;
|
|
return 0;
|
|
}
|
|
|
|
/* Open a TAP interface device.
|
|
*/
|
|
static int
|
|
rte_pmd_tap_probe(struct rte_vdev_device *dev)
|
|
{
|
|
const char *name, *params;
|
|
int ret;
|
|
struct rte_kvargs *kvlist = NULL;
|
|
int speed;
|
|
char tap_name[RTE_ETH_NAME_MAX_LEN];
|
|
char remote_iface[RTE_ETH_NAME_MAX_LEN];
|
|
int fixed_mac_type = 0;
|
|
|
|
name = rte_vdev_device_name(dev);
|
|
params = rte_vdev_device_args(dev);
|
|
|
|
speed = ETH_SPEED_NUM_10G;
|
|
snprintf(tap_name, sizeof(tap_name), "%s%d",
|
|
DEFAULT_TAP_NAME, tap_unit++);
|
|
memset(remote_iface, 0, RTE_ETH_NAME_MAX_LEN);
|
|
|
|
if (params && (params[0] != '\0')) {
|
|
RTE_LOG(DEBUG, PMD, "paramaters (%s)\n", params);
|
|
|
|
kvlist = rte_kvargs_parse(params, valid_arguments);
|
|
if (kvlist) {
|
|
if (rte_kvargs_count(kvlist, ETH_TAP_SPEED_ARG) == 1) {
|
|
ret = rte_kvargs_process(kvlist,
|
|
ETH_TAP_SPEED_ARG,
|
|
&set_interface_speed,
|
|
&speed);
|
|
if (ret == -1)
|
|
goto leave;
|
|
}
|
|
|
|
if (rte_kvargs_count(kvlist, ETH_TAP_IFACE_ARG) == 1) {
|
|
ret = rte_kvargs_process(kvlist,
|
|
ETH_TAP_IFACE_ARG,
|
|
&set_interface_name,
|
|
tap_name);
|
|
if (ret == -1)
|
|
goto leave;
|
|
}
|
|
|
|
if (rte_kvargs_count(kvlist, ETH_TAP_REMOTE_ARG) == 1) {
|
|
ret = rte_kvargs_process(kvlist,
|
|
ETH_TAP_REMOTE_ARG,
|
|
&set_remote_iface,
|
|
remote_iface);
|
|
if (ret == -1)
|
|
goto leave;
|
|
}
|
|
|
|
if (rte_kvargs_count(kvlist, ETH_TAP_MAC_ARG) == 1) {
|
|
ret = rte_kvargs_process(kvlist,
|
|
ETH_TAP_MAC_ARG,
|
|
&set_mac_type,
|
|
&fixed_mac_type);
|
|
if (ret == -1)
|
|
goto leave;
|
|
}
|
|
}
|
|
}
|
|
pmd_link.link_speed = speed;
|
|
|
|
RTE_LOG(NOTICE, PMD, "Initializing pmd_tap for %s as %s\n",
|
|
name, tap_name);
|
|
|
|
ret = eth_dev_tap_create(dev, tap_name, remote_iface, fixed_mac_type);
|
|
|
|
leave:
|
|
if (ret == -1) {
|
|
RTE_LOG(ERR, PMD, "Failed to create pmd for %s as %s\n",
|
|
name, tap_name);
|
|
tap_unit--; /* Restore the unit number */
|
|
}
|
|
rte_kvargs_free(kvlist);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* detach a TAP device.
|
|
*/
|
|
static int
|
|
rte_pmd_tap_remove(struct rte_vdev_device *dev)
|
|
{
|
|
struct rte_eth_dev *eth_dev = NULL;
|
|
struct pmd_internals *internals;
|
|
int i;
|
|
|
|
RTE_LOG(DEBUG, PMD, "Closing TUN/TAP Ethernet device on numa %u\n",
|
|
rte_socket_id());
|
|
|
|
/* find the ethdev entry */
|
|
eth_dev = rte_eth_dev_allocated(rte_vdev_device_name(dev));
|
|
if (!eth_dev)
|
|
return 0;
|
|
|
|
internals = eth_dev->data->dev_private;
|
|
if (internals->flower_support && internals->nlsk_fd) {
|
|
tap_flow_flush(eth_dev, NULL);
|
|
tap_flow_implicit_flush(internals, NULL);
|
|
nl_final(internals->nlsk_fd);
|
|
}
|
|
for (i = 0; i < internals->nb_queues; i++)
|
|
if (internals->rxq[i].fd != -1)
|
|
close(internals->rxq[i].fd);
|
|
|
|
close(internals->ioctl_sock);
|
|
rte_free(eth_dev->data->dev_private);
|
|
rte_free(eth_dev->data);
|
|
|
|
rte_eth_dev_release_port(eth_dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct rte_vdev_driver pmd_tap_drv = {
|
|
.probe = rte_pmd_tap_probe,
|
|
.remove = rte_pmd_tap_remove,
|
|
};
|
|
RTE_PMD_REGISTER_VDEV(net_tap, pmd_tap_drv);
|
|
RTE_PMD_REGISTER_ALIAS(net_tap, eth_tap);
|
|
RTE_PMD_REGISTER_PARAM_STRING(net_tap,
|
|
ETH_TAP_IFACE_ARG "=<string> "
|
|
ETH_TAP_SPEED_ARG "=<int> "
|
|
ETH_TAP_MAC_ARG "=" ETH_TAP_MAC_FIXED " "
|
|
ETH_TAP_REMOTE_ARG "=<string>");
|