742bde12f3
Rename the macro to make things shorter and more comprehensible. For both meson and make builds, keep the old macro around for backward compatibility. Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
103 lines
1.6 KiB
C
103 lines
1.6 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright(c) 2010-2018 Intel Corporation
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*/
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#include <netinet/in.h>
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#ifdef RTE_EXEC_ENV_LINUX
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#include <linux/if.h>
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#include <linux/if_tun.h>
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#endif
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#include <sys/ioctl.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <rte_string_fns.h>
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#include "tap.h"
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#define TAP_DEV "/dev/net/tun"
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static struct tap_list tap_list;
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int
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tap_init(void)
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{
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TAILQ_INIT(&tap_list);
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return 0;
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}
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struct tap *
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tap_find(const char *name)
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{
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struct tap *tap;
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if (name == NULL)
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return NULL;
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TAILQ_FOREACH(tap, &tap_list, node)
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if (strcmp(tap->name, name) == 0)
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return tap;
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return NULL;
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}
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#ifndef RTE_EXEC_ENV_LINUX
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struct tap *
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tap_create(const char *name __rte_unused)
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{
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return NULL;
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}
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#else
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struct tap *
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tap_create(const char *name)
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{
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struct tap *tap;
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struct ifreq ifr;
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int fd, status;
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/* Check input params */
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if ((name == NULL) ||
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tap_find(name))
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return NULL;
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/* Resource create */
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fd = open(TAP_DEV, O_RDWR | O_NONBLOCK);
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if (fd < 0)
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return NULL;
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memset(&ifr, 0, sizeof(ifr));
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ifr.ifr_flags = IFF_TAP | IFF_NO_PI; /* No packet information */
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snprintf(ifr.ifr_name, IFNAMSIZ, "%s", name);
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status = ioctl(fd, TUNSETIFF, (void *) &ifr);
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if (status < 0) {
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close(fd);
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return NULL;
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}
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/* Node allocation */
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tap = calloc(1, sizeof(struct tap));
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if (tap == NULL) {
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close(fd);
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return NULL;
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}
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/* Node fill in */
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strlcpy(tap->name, name, sizeof(tap->name));
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tap->fd = fd;
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/* Node add to list */
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TAILQ_INSERT_TAIL(&tap_list, tap, node);
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return tap;
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}
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#endif
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