/* Set up interface's address, netmask (and broadcas? ). Linux or
Solaris uses ifname:number semantics to set IP address aliases. */
int if_set_prefix_ctx(const struct zebra_dplane_ctx *ctx)
{
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 *)dplane_ctx_get_intf_addr(ctx);
ifaddr = *p;
strlcpy(ifreq.ifr_name, dplane_ctx_get_ifname(ctx),
sizeof(ifreq.ifr_name));
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 (dplane_ctx_intf_is_broadcast(ctx)) {
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_addr, &mask, sizeof(struct sockaddr_in));
#endif /* SUNOS5 */
ret = if_ioctl(SIOCSIFNETMASK, (caddr_t)&ifreq);
if (ret < 0)
return ret;
return 0;
}
/* Set up interface's address, netmask (and broadcast? ).
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;
strncpy(ifreq.ifr_name, ifp->name, IFNAMSIZ);
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 /* SUNOS_5 */
ret = if_ioctl(SIOCSIFNETMASK, (caddr_t)&ifreq);
return ((ret < 0) ? ret : 0);
}
static int
if_get_hwaddr (struct interface *ifp)
{
int ret;
struct ifreq ifreq;
int i;
strncpy (ifreq.ifr_name, ifp->name, IFNAMSIZ);
ifreq.ifr_addr.sa_family = AF_INET;
/* Fetch Hardware address if available. */
ret = if_ioctl (SIOCGIFHWADDR, (caddr_t) &ifreq);
if (ret < 0)
ifp->hw_addr_len = 0;
else
{
memcpy (ifp->hw_addr, ifreq.ifr_hwaddr.sa_data, 6);
for (i = 0; i < 6; i++)
if (ifp->hw_addr[i] != 0)
break;
if (i == 6)
ifp->hw_addr_len = 0;
else
ifp->hw_addr_len = 6;
}
return 0;
}
/* Set up interface's IP address, netmask (and broadcas? ). *BSD may
has ifaliasreq structure. */
int
if_unset_prefix (struct interface *ifp, struct connected *ifc)
{
int ret;
struct ifaliasreq addreq;
struct sockaddr_in addr;
struct sockaddr_in mask;
struct prefix_ipv4 *p;
p = (struct prefix_ipv4 *)ifc->address;
memset (&addreq, 0, sizeof addreq);
strncpy ((char *)&addreq.ifra_name, ifp->name, sizeof addreq.ifra_name);
memset (&addr, 0, sizeof (struct sockaddr_in));
addr.sin_addr = p->prefix;
addr.sin_family = p->family;
#ifdef HAVE_SIN_LEN
addr.sin_len = sizeof (struct sockaddr_in);
#endif
memcpy (&addreq.ifra_addr, &addr, sizeof (struct sockaddr_in));
memset (&mask, 0, sizeof (struct sockaddr_in));
masklen2ip (p->prefixlen, &mask.sin_addr);
mask.sin_family = p->family;
#ifdef HAVE_SIN_LEN
mask.sin_len = sizeof (struct sockaddr_in);
#endif
memcpy (&addreq.ifra_mask, &mask, sizeof (struct sockaddr_in));
ret = if_ioctl (SIOCDIFADDR, (caddr_t) &addreq);
if (ret < 0)
return ret;
return 0;
}
/* 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
}
/* 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 = if_ioctl (SIOCGIFFLAGS, (caddr_t) &ifreq);
if (ret < 0)
{
zlog_err("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 kroute as a link-state flag,
* following practice on Linux and Solaris kernels
*/
SET_FLAG(ifreq.ifr_flags, IFF_RUNNING);
if (CHECK_FLAG (ifp->status, KROUTE_INTERFACE_LINKDETECTION))
{
(void) memset(&ifmr, 0, sizeof(ifmr));
strncpy (ifmr.ifm_name, ifp->name, IFNAMSIZ);
/* Seems not all interfaces implement this ioctl */
if (if_ioctl(SIOCGIFMEDIA, (caddr_t) &ifmr) < 0)
zlog_err("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 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'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;
}
/*
* Helper for interface-addr install, non-netlink
*/
static int if_set_prefix_ctx(const struct zebra_dplane_ctx *ctx)
{
int ret;
struct ifaliasreq addreq;
struct sockaddr_in addr, mask, peer;
struct prefix_ipv4 *p;
p = (struct prefix_ipv4 *)dplane_ctx_get_intf_addr(ctx);
memset(&addreq, 0, sizeof(addreq));
strlcpy((char *)&addreq.ifra_name, dplane_ctx_get_ifname(ctx),
sizeof(addreq.ifra_name));
memset(&addr, 0, sizeof(struct sockaddr_in));
addr.sin_addr = p->prefix;
addr.sin_family = p->family;
#ifdef HAVE_STRUCT_SOCKADDR_IN_SIN_LEN
addr.sin_len = sizeof(struct sockaddr_in);
#endif
memcpy(&addreq.ifra_addr, &addr, sizeof(struct sockaddr_in));
if (dplane_ctx_intf_is_connected(ctx)) {
p = (struct prefix_ipv4 *)dplane_ctx_get_intf_dest(ctx);
memset(&mask, 0, sizeof(struct sockaddr_in));
peer.sin_addr = p->prefix;
peer.sin_family = p->family;
#ifdef HAVE_STRUCT_SOCKADDR_IN_SIN_LEN
peer.sin_len = sizeof(struct sockaddr_in);
#endif
memcpy(&addreq.ifra_broadaddr, &peer,
sizeof(struct sockaddr_in));
}
memset(&mask, 0, sizeof(struct sockaddr_in));
masklen2ip(p->prefixlen, &mask.sin_addr);
mask.sin_family = p->family;
#ifdef HAVE_STRUCT_SOCKADDR_IN_SIN_LEN
mask.sin_len = sizeof(struct sockaddr_in);
#endif
memcpy(&addreq.ifra_mask, &mask, sizeof(struct sockaddr_in));
ret = if_ioctl(SIOCAIFADDR, (caddr_t)&addreq);
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 (if_ioctl (SIOCGIFMETRIC, (caddr_t) &ifreq) < 0)
return;
ifp->metric = ifreq.ifr_metric;
if (ifp->metric == 0)
ifp->metric = 1;
#else /* SIOCGIFMETRIC */
ifp->metric = -1;
#endif /* SIOCGIFMETRIC */
}
/*
* 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, 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;
}
/* Unset interface's flag. */
int if_unset_flags (struct interface *ifp, uint64_t flags)
{
int ret = 0;
struct ifreq ifreq;
memset (&ifreq, 0, sizeof(struct 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;
}
/* Set up interface's address, netmask (and broadcas? ). Linux or
Solaris uses ifname:number semantics to set IP address aliases. */
int if_unset_prefix_ctx(const struct zebra_dplane_ctx *ctx)
{
int ret;
struct ifreq ifreq;
struct sockaddr_in addr;
struct prefix_ipv4 *p;
p = (struct prefix_ipv4 *)dplane_ctx_get_intf_addr(ctx);
strlcpy(ifreq.ifr_name, dplane_ctx_get_ifname(ctx),
sizeof(ifreq.ifr_name));
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 */
}
/* Interface address lookup by ioctl. This function only looks up
IPv4 address. */
int
if_get_addr (struct interface *ifp)
{
int ret;
struct ifreq ifreq;
struct sockaddr_in addr;
struct sockaddr_in mask;
struct sockaddr_in dest;
struct in_addr *dest_pnt;
u_char prefixlen;
/* Interface's name and address family. */
strncpy (ifreq.ifr_name, ifp->name, IFNAMSIZ);
ifreq.ifr_addr.sa_family = AF_INET;
/* Interface's address. */
ret = if_ioctl (SIOCGIFADDR, (caddr_t) &ifreq);
if (ret < 0)
{
if (errno != EADDRNOTAVAIL)
{
zlog_warn ("SIOCGIFADDR fail: %s", safe_strerror (errno));
return ret;
}
return 0;
}
memcpy (&addr, &ifreq.ifr_addr, sizeof (struct sockaddr_in));
/* Interface's network mask. */
ret = if_ioctl (SIOCGIFNETMASK, (caddr_t) &ifreq);
if (ret < 0)
{
if (errno != EADDRNOTAVAIL)
{
zlog_warn ("SIOCGIFNETMASK fail: %s", safe_strerror (errno));
return ret;
}
return 0;
}
#ifdef ifr_netmask
memcpy (&mask, &ifreq.ifr_netmask, sizeof (struct sockaddr_in));
#else
memcpy (&mask, &ifreq.ifr_addr, sizeof (struct sockaddr_in));
#endif /* ifr_netmask */
prefixlen = ip_masklen (mask.sin_addr);
/* Point to point or borad cast address pointer init. */
dest_pnt = NULL;
if (ifp->flags & IFF_POINTOPOINT)
{
ret = if_ioctl (SIOCGIFDSTADDR, (caddr_t) &ifreq);
if (ret < 0)
{
if (errno != EADDRNOTAVAIL)
{
zlog_warn ("SIOCGIFDSTADDR fail: %s", safe_strerror (errno));
return ret;
}
return 0;
}
memcpy (&dest, &ifreq.ifr_dstaddr, sizeof (struct sockaddr_in));
dest_pnt = &dest.sin_addr;
}
if (ifp->flags & IFF_BROADCAST)
{
ret = if_ioctl (SIOCGIFBRDADDR, (caddr_t) &ifreq);
if (ret < 0)
{
if (errno != EADDRNOTAVAIL)
{
zlog_warn ("SIOCGIFBRDADDR fail: %s", safe_strerror (errno));
return ret;
}
return 0;
}
memcpy (&dest, &ifreq.ifr_broadaddr, sizeof (struct sockaddr_in));
dest_pnt = &dest.sin_addr;
}
/* Set address to the interface. */
connected_add_ipv4 (ifp, 0, &addr.sin_addr, prefixlen, dest_pnt, NULL);
return 0;
}
int vrf_if_ioctl(unsigned long request, caddr_t buffer, vrf_id_t vrf_id)
{
return if_ioctl(request, buffer);
}
/* Retrieve address information for the given ifp */
static int
if_get_addr (struct interface *ifp, struct sockaddr *addr, const char *label)
{
int ret;
struct lifreq lifreq;
struct sockaddr_storage mask, dest;
char *dest_pnt = NULL;
u_char prefixlen = 0;
afi_t af;
int flags = 0;
/* Interface's name and address family.
* We need to use the logical interface name / label, if we've been
* given one, in order to get the right address
*/
strncpy (lifreq.lifr_name, (label ? label : ifp->name), IFNAMSIZ);
/* Interface's address. */
memcpy (&lifreq.lifr_addr, addr, ADDRLEN (addr));
af = addr->sa_family;
/* Point to point or broad cast address pointer init. */
dest_pnt = NULL;
if (AF_IOCTL (af, SIOCGLIFDSTADDR, (caddr_t) & lifreq) >= 0)
{
memcpy (&dest, &lifreq.lifr_dstaddr, ADDRLEN (addr));
if (af == AF_INET)
dest_pnt = (char *) &(SIN (&dest)->sin_addr);
else
dest_pnt = (char *) &(SIN6 (&dest)->sin6_addr);
flags = ZEBRA_IFA_PEER;
}
if (af == AF_INET)
{
ret = if_ioctl (SIOCGLIFNETMASK, (caddr_t) & lifreq);
if (ret < 0)
{
if (errno != EADDRNOTAVAIL)
{
zlog_warn ("SIOCGLIFNETMASK (%s) fail: %s", ifp->name,
safe_strerror (errno));
return ret;
}
return 0;
}
memcpy (&mask, &lifreq.lifr_addr, ADDRLEN (addr));
prefixlen = ip_masklen (SIN (&mask)->sin_addr);
if (!dest_pnt && (if_ioctl (SIOCGLIFBRDADDR, (caddr_t) & lifreq) >= 0))
{
memcpy (&dest, &lifreq.lifr_broadaddr, sizeof (struct sockaddr_in));
dest_pnt = (char *) &SIN (&dest)->sin_addr;
}
}
#ifdef HAVE_IPV6
else if (af == AF_INET6)
{
if (if_ioctl_ipv6 (SIOCGLIFSUBNET, (caddr_t) & lifreq) < 0)
{
if (ifp->flags & IFF_POINTOPOINT)
prefixlen = IPV6_MAX_BITLEN;
else
zlog_warn ("SIOCGLIFSUBNET (%s) fail: %s",
ifp->name, safe_strerror (errno));
}
else
{
prefixlen = lifreq.lifr_addrlen;
}
}
#endif /* HAVE_IPV6 */
/* Set address to the interface. */
if (af == AF_INET)
connected_add_ipv4 (ifp, flags, &SIN (addr)->sin_addr, prefixlen,
(struct in_addr *) dest_pnt, label);
#ifdef HAVE_IPV6
else if (af == AF_INET6)
connected_add_ipv6 (ifp, flags, &SIN6 (addr)->sin6_addr, prefixlen,
(struct in6_addr *) dest_pnt, label);
#endif /* HAVE_IPV6 */
return 0;
}
