/* get interface MTU */
void if_get_mtu(struct interface *ifp)
{
struct ifreq ifreq;
ifreq_set_name(&ifreq, ifp);
#if defined(SIOCGIFMTU)
if (vrf_if_ioctl(SIOCGIFMTU, (caddr_t)&ifreq, ifp->vrf_id) < 0) {
zlog_info("Can't lookup mtu by ioctl(SIOCGIFMTU)");
ifp->mtu6 = ifp->mtu = -1;
return;
}
#ifdef SUNOS_5
ifp->mtu6 = ifp->mtu = ifreq.ifr_metric;
#else
ifp->mtu6 = ifp->mtu = ifreq.ifr_mtu;
#endif /* SUNOS_5 */
/* propogate */
zebra_interface_up_update(ifp);
#else
zlog_info("Can't lookup mtu on this system");
ifp->mtu6 = ifp->mtu = -1;
#endif
}
/* get interface MTU */
void
if_get_mtu (struct interface *ifp)
{
struct ifreq ifreq;
ifreq_set_name (&ifreq, ifp);
#if defined(SIOCGIFMTU)
if (if_ioctl (SIOCGIFMTU, (caddr_t) & ifreq) < 0)
{
zlog_info ("Can't lookup mtu by ioctl(SIOCGIFMTU)");
ifp->mtu = -1;
return;
}
#ifdef SUNOS_5
ifp->mtu = ifreq.ifr_metric;
#else
ifp->mtu = ifreq.ifr_mtu;
#endif /* SUNOS_5 */
#else
zlog (NULL, LOG_INFO, "Can't lookup mtu on this system");
ifp->mtu = -1;
#endif
}
/* Set up interface's address, netmask (and broadcas? ). Linux or
Solaris uses ifname:number semantics to set IP address aliases. */
int
if_set_prefix (struct interface *ifp, struct connected *ifc)
{
int ret;
struct ifreq ifreq;
struct sockaddr_in addr;
struct sockaddr_in broad;
struct sockaddr_in mask;
struct prefix_ipv4 ifaddr;
struct prefix_ipv4 *p;
p = (struct prefix_ipv4 *) ifc->address;
ifaddr = *p;
ifreq_set_name (&ifreq, ifp);
addr.sin_addr = p->prefix;
addr.sin_family = p->family;
memcpy (&ifreq.ifr_addr, &addr, sizeof (struct sockaddr_in));
ret = if_ioctl (SIOCSIFADDR, (caddr_t) &ifreq);
if (ret < 0)
return ret;
/* We need mask for make broadcast addr. */
masklen2ip (p->prefixlen, &mask.sin_addr);
if (if_is_broadcast (ifp))
{
apply_mask_ipv4 (&ifaddr);
addr.sin_addr = ifaddr.prefix;
broad.sin_addr.s_addr = (addr.sin_addr.s_addr | ~mask.sin_addr.s_addr);
broad.sin_family = p->family;
memcpy (&ifreq.ifr_broadaddr, &broad, sizeof (struct sockaddr_in));
ret = if_ioctl (SIOCSIFBRDADDR, (caddr_t) &ifreq);
if (ret < 0)
return ret;
}
mask.sin_family = p->family;
#ifdef SUNOS_5
memcpy (&mask, &ifreq.ifr_addr, sizeof (mask));
#else
memcpy (&ifreq.ifr_netmask, &mask, sizeof (struct sockaddr_in));
#endif /* SUNOS5 */
ret = if_ioctl (SIOCSIFNETMASK, (caddr_t) &ifreq);
if (ret < 0)
return ret;
return 0;
}
/*
* get interface metric
* -- if value is not avaliable set -1
*/
void if_get_metric(struct interface *ifp)
{
#ifdef SIOCGIFMETRIC
struct ifreq ifreq;
ifreq_set_name(&ifreq, ifp);
if (vrf_if_ioctl(SIOCGIFMETRIC, (caddr_t)&ifreq, ifp->vrf_id) < 0)
return;
ifp->metric = ifreq.ifr_metric;
if (ifp->metric == 0)
ifp->metric = 1;
#else /* SIOCGIFMETRIC */
ifp->metric = -1;
#endif /* SIOCGIFMETRIC */
}
/* get interface flags */
void if_get_flags (struct interface *ifp)
{
int ret = 0;
struct ifreq ifreq;
ifreq_set_name (&ifreq, ifp);
ret = if_ioctl (SIOCGIFFLAGS, (caddr_t) &ifreq);
if (ret < 0)
{
zlog_err("if_ioctl(SIOCGIFFLAGS) failed: %s", safe_strerror(errno));
return;
}
if_flags_update (ifp, (ifreq.ifr_flags & 0x0000ffff));
}
/* get interface flags */
void if_get_flags(struct interface *ifp)
{
int ret;
struct ifreq ifreq;
#ifdef HAVE_BSD_LINK_DETECT
struct ifmediareq ifmr;
#endif /* HAVE_BSD_LINK_DETECT */
ifreq_set_name(&ifreq, ifp);
ret = vrf_if_ioctl(SIOCGIFFLAGS, (caddr_t)&ifreq, ifp->vrf_id);
if (ret < 0) {
flog_err_sys(EC_LIB_SYSTEM_CALL,
"vrf_if_ioctl(SIOCGIFFLAGS) failed: %s",
safe_strerror(errno));
return;
}
#ifdef HAVE_BSD_LINK_DETECT /* Detect BSD link-state at start-up */
/* Per-default, IFF_RUNNING is held high, unless link-detect says
* otherwise - we abuse IFF_RUNNING inside zebra as a link-state flag,
* following practice on Linux and Solaris kernels
*/
SET_FLAG(ifreq.ifr_flags, IFF_RUNNING);
if (CHECK_FLAG(ifp->status, ZEBRA_INTERFACE_LINKDETECTION)) {
(void)memset(&ifmr, 0, sizeof(ifmr));
strlcpy(ifmr.ifm_name, ifp->name, sizeof(ifmr.ifm_name));
/* Seems not all interfaces implement this ioctl */
if (if_ioctl(SIOCGIFMEDIA, (caddr_t)&ifmr) == -1 &&
errno != EINVAL)
flog_err_sys(EC_LIB_SYSTEM_CALL,
"if_ioctl(SIOCGIFMEDIA) failed: %s",
safe_strerror(errno));
else if (ifmr.ifm_status & IFM_AVALID) /* Link state is valid */
{
if (ifmr.ifm_status & IFM_ACTIVE)
SET_FLAG(ifreq.ifr_flags, IFF_RUNNING);
else
UNSET_FLAG(ifreq.ifr_flags, IFF_RUNNING);
}
}
#endif /* HAVE_BSD_LINK_DETECT */
if_flags_update(ifp, (ifreq.ifr_flags & 0x0000ffff));
}
/* Get interface's index by ioctl. */
int
if_get_index (struct interface_FOO *ifp)
{
#if defined(HAVE_IF_NAMETOINDEX)
/* Modern systems should have if_nametoindex(3). */
ifp->ifindex = if_nametoindex(ifp->name);
#elif defined(SIOCGIFINDEX) && !defined(HAVE_BROKEN_ALIASES)
/* Fall-back for older linuxes. */
int ret;
struct ifreq ifreq;
static int if_fake_index;
ifreq_set_name (&ifreq, ifp);
ret = if_ioctl (SIOCGIFINDEX, (caddr_t) &ifreq);
if (ret < 0)
{
/* Linux 2.0.X does not have interface index. */
ifp->ifindex = if_fake_index++;
return ifp->ifindex;
}
/* OK we got interface index. */
#ifdef ifr_ifindex
ifp->ifindex = ifreq.ifr_ifindex;
#else
ifp->ifindex = ifreq.ifr_index;
#endif
#else
/* Linux 2.2.X does not provide individual interface index
for aliases and we know it. For others issue a warning. */
#if !defined(HAVE_BROKEN_ALIASES)
#ifndef _MSC_VER
#warning "Using if_fake_index. You may want to add appropriate"
#endif
#ifndef _MSC_VER
#warning "mapping from ifname to ifindex for your system..."
#endif
#endif
/* This branch probably won't provide usable results, but anyway... */
static int if_fake_index = 1;
ifp->ifindex = if_fake_index++;
#endif
return ifp->ifindex;
}
/*
* get interface metric
* -- if value is not avaliable set -1
*/
void if_get_metric (struct interface *ifp)
{
struct ifreq ifreq;
ifreq_set_name (&ifreq, ifp);
if (if_ioctl (SIOCGIFMETRIC, (caddr_t) &ifreq) < 0)
{
return;
}
ifp->metric = ifreq.ifr_metric;
if (ifp->metric == 0)
{
ifp->metric = 1;
}
return;
}
/* get interface flags */
void
if_get_flags (struct interface *ifp)
{
int ret;
struct ifreq ifreq;
ifreq_set_name (&ifreq, ifp);
ret = if_ioctl (SIOCGIFFLAGS, (caddr_t) &ifreq);
if (ret < 0)
{
perror ("ioctl");
return;
}
ifp->flags = ifreq.ifr_flags & 0x0000ffff;
}
/* get interface MTU */
void if_get_mtu (struct interface *ifp)
{
struct ifreq ifreq;
ifreq_set_name (&ifreq, ifp);
if (if_ioctl (SIOCGIFMTU, (caddr_t) & ifreq) < 0)
{
zlog_info ("Can't lookup mtu by ioctl(SIOCGIFMTU)");
ifp->mtu6 = ifp->mtu = -1;
return;
}
ifp->mtu6 = ifp->mtu = ifreq.ifr_mtu;
/* propogate */
zebra_interface_up_update(ifp);
}
/* Unset interface's flag. */
int if_unset_flags(struct interface *ifp, uint64_t flags)
{
int ret;
struct ifreq ifreq;
memset(&ifreq, 0, sizeof(struct ifreq));
ifreq_set_name(&ifreq, ifp);
ifreq.ifr_flags = ifp->flags;
ifreq.ifr_flags &= ~flags;
ret = vrf_if_ioctl(SIOCSIFFLAGS, (caddr_t)&ifreq, ifp->vrf_id);
if (ret < 0) {
zlog_info("can't unset interface flags");
return ret;
}
return 0;
}
/* Unset interface's flag. */
int
if_unset_flags (struct interface *ifp, unsigned long flags)
{
int ret;
struct ifreq ifreq;
ifreq_set_name (&ifreq, ifp);
ifreq.ifr_flags = ifp->flags;
ifreq.ifr_flags &= ~flags;
ret = if_ioctl (SIOCSIFFLAGS, (caddr_t) &ifreq);
if (ret < 0)
{
zlog_info ("can't unset interface flags");
return ret;
}
return 0;
}
/* Set up interface's address, netmask (and broadcas? ). Linux or
Solaris uses ifname:number semantics to set IP address aliases. */
int
if_unset_prefix (struct interface *ifp, struct connected *ifc)
{
int ret;
struct ifreq ifreq;
struct sockaddr_in addr;
struct prefix_ipv4 *p;
p = (struct prefix_ipv4 *) ifc->address;
ifreq_set_name (&ifreq, ifp);
memset (&addr, 0, sizeof (struct sockaddr_in));
addr.sin_family = p->family;
memcpy (&ifreq.ifr_addr, &addr, sizeof (struct sockaddr_in));
ret = if_ioctl (SIOCSIFADDR, (caddr_t) &ifreq);
if (ret < 0)
return ret;
return 0;
}
/* Get interface's index by ioctl. */
int
if_get_index (struct interface *ifp)
{
static int if_fake_index = 1;
#ifdef HAVE_BROKEN_ALIASES
/* Linux 2.2.X does not provide individual interface index for aliases. */
ifp->ifindex = if_fake_index++;
return ifp->ifindex;
#else
#ifdef SIOCGIFINDEX
int ret;
struct ifreq ifreq;
ifreq_set_name (&ifreq, ifp);
ret = if_ioctl (SIOCGIFINDEX, (caddr_t) &ifreq);
if (ret < 0)
{
/* Linux 2.0.X does not have interface index. */
ifp->ifindex = if_fake_index++;
return ifp->ifindex;
}
/* OK we got interface index. */
#ifdef ifr_ifindex
ifp->ifindex = ifreq.ifr_ifindex;
#else
ifp->ifindex = ifreq.ifr_index;
#endif
return ifp->ifindex;
#else
ifp->ifindex = if_fake_index++;
return ifp->ifindex;
#endif /* SIOCGIFINDEX */
#endif /* HAVE_BROKEN_ALIASES */
}
