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/* -*- mode: c; c-file-style: "openbsd" -*- */
/*
* Copyright (c) 2013 Vincent Bernat <bernat@luffy.cx>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include "lldpd.h"
#include <unistd.h>
#include <sys/sockio.h>
#include <net/if_types.h>
/* Solaris comes with libdladm which seems to be handy to get all the necessary
* information. Unfortunately, this library needs a special device file and a
* Unix socket to a daemon. This is a bit difficult to use it in a
* privilege-separated daemon. Therefore, we keep using ioctl(). This should
* also improve compatibility with older versions of Solaris.
*/
static void
ifsolaris_extract(struct lldpd *cfg, struct interfaces_device_list *interfaces,
struct interfaces_address_list *addresses, struct lifreq *lifr)
{
int flags = 0;
int index = 0;
struct interfaces_address *address = NULL;
struct interfaces_device *device = NULL;
sa_family_t lifr_af = lifr->lifr_addr.ss_family;
struct lifreq lifrl = { .lifr_name = {} };
strlcpy(lifrl.lifr_name, lifr->lifr_name, sizeof(lifrl.lifr_name));
/* Flags */
if (ioctl(cfg->g_sock, SIOCGLIFFLAGS, (caddr_t)&lifrl) < 0) {
log_warn("interfaces", "unable to get flags for %s", lifrl.lifr_name);
return;
}
flags = lifrl.lifr_flags;
/* Index */
if (ioctl(cfg->g_sock, SIOCGLIFINDEX, (caddr_t)&lifrl) < 0) {
log_warn("interfaces", "unable to get index for %s", lifrl.lifr_name);
return;
}
index = lifrl.lifr_index;
/* Record the address */
if ((address = malloc(sizeof(struct interfaces_address))) == NULL) {
log_warn("interfaces", "not enough memory for a new IP address on %s",
lifrl.lifr_name);
return;
}
address->flags = flags;
address->index = index;
memcpy(&address->address, &lifr->lifr_addr,
(lifr_af == AF_INET) ? sizeof(struct sockaddr_in) :
sizeof(struct sockaddr_in6));
TAILQ_INSERT_TAIL(addresses, address, next);
/* Hardware address */
if (ioctl(cfg->g_sock, SIOCGLIFHWADDR, (caddr_t)&lifrl) < 0) {
log_debug("interfaces", "unable to get hardware address for %s",
lifrl.lifr_name);
return;
}
struct sockaddr_dl *saddrdl = (struct sockaddr_dl *)&lifrl.lifr_addr;
if (saddrdl->sdl_type != 4) {
log_debug("interfaces", "skip %s: not an ethernet device (%d)",
lifrl.lifr_name, saddrdl->sdl_type);
return;
}
/* Handle the interface */
if ((device = calloc(1, sizeof(struct interfaces_device))) == NULL) {
log_warn("interfaces", "unable to allocate memory for %s",
lifrl.lifr_name);
return;
}
device->name = strdup(lifrl.lifr_name);
device->flags = flags;
device->index = index;
device->type = IFACE_PHYSICAL_T;
device->address = malloc(ETHER_ADDR_LEN);
if (device->address) memcpy(device->address, LLADDR(saddrdl), ETHER_ADDR_LEN);
/* MTU */
if (ioctl(cfg->g_sock, SIOCGLIFMTU, (caddr_t)&lifrl) < 0) {
log_debug("interfaces", "unable to get MTU for %s", lifrl.lifr_name);
} else
device->mtu = lifrl.lifr_mtu;
TAILQ_INSERT_TAIL(interfaces, device, next);
}
extern struct lldpd_ops bpf_ops;
void
interfaces_update(struct lldpd *cfg)
{
struct lldpd_hardware *hardware;
caddr_t buffer = NULL;
struct interfaces_device_list *interfaces;
struct interfaces_address_list *addresses;
interfaces = malloc(sizeof(struct interfaces_device_list));
addresses = malloc(sizeof(struct interfaces_address_list));
if (interfaces == NULL || addresses == NULL) {
log_warnx("interfaces", "unable to allocate memory");
goto end;
}
TAILQ_INIT(interfaces);
TAILQ_INIT(addresses);
struct lifnum lifn = { .lifn_family = AF_UNSPEC, .lifn_flags = LIFC_ENABLED };
if (ioctl(cfg->g_sock, SIOCGLIFNUM, &lifn) < 0) {
log_warn("interfaces", "unable to get the number of interfaces");
goto end;
}
size_t bufsize = lifn.lifn_count * sizeof(struct lifreq);
if ((buffer = malloc(bufsize)) == NULL) {
log_warn("interfaces", "unable to allocate buffer to get interfaces");
goto end;
}
struct lifconf lifc = { .lifc_family = AF_UNSPEC,
.lifc_flags = LIFC_ENABLED,
.lifc_len = bufsize,
.lifc_buf = buffer };
if (ioctl(cfg->g_sock, SIOCGLIFCONF, (char *)&lifc) < 0) {
log_warn("interfaces", "unable to get the network interfaces");
goto end;
}
int num = lifc.lifc_len / sizeof(struct lifreq);
if (num > lifn.lifn_count) num = lifn.lifn_count;
log_debug("interfaces", "got %d interfaces", num);
struct lifreq *lifrp = (struct lifreq *)buffer;
for (int n = 0; n < num; n++, lifrp++)
ifsolaris_extract(cfg, interfaces, addresses, lifrp);
interfaces_helper_allowlist(cfg, interfaces);
interfaces_helper_physical(cfg, interfaces, &bpf_ops, ifbpf_phys_init);
interfaces_helper_mgmt(cfg, addresses, interfaces);
interfaces_helper_chassis(cfg, interfaces);
/* Mac/PHY */
TAILQ_FOREACH (hardware, &cfg->g_hardware, h_entries) {
if (!hardware->h_flags) continue;
/* TODO: mac/phy for Solaris */
interfaces_helper_promisc(cfg, hardware);
}
end:
free(buffer);
interfaces_free_devices(interfaces);
interfaces_free_addresses(addresses);
}
void
interfaces_cleanup(struct lldpd *cfg)
{
}
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