void TunManager::addRemoveSourceRouteRule(
RouterID rid, folly::IPAddress addr, bool add) {
struct {
struct nlmsghdr n;
struct rtmsg r;
char buf[256];
} req;
memset(&req, 0, sizeof(req));
req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct rtmsg));
req.n.nlmsg_flags = NLM_F_REQUEST;
if (add) {
req.n.nlmsg_type = RTM_NEWRULE;
req.n.nlmsg_flags |= NLM_F_CREATE|NLM_F_REPLACE;
} else {
req.n.nlmsg_type = RTM_DELRULE;
}
req.r.rtm_family = addr.family();
req.r.rtm_protocol = RTPROT_FBOSS;
req.r.rtm_scope = RT_SCOPE_UNIVERSE;
req.r.rtm_type = RTN_UNICAST;
req.r.rtm_flags = 0;
// from addr
addattr_l(&req.n, sizeof(req), FRA_SRC, addr.bytes(), addr.byteCount());
req.r.rtm_src_len = addr.bitCount(); // match the exact address
// table rid
req.r.rtm_table = getTableId(rid);
auto ret = rtnl_talk(&rth_, &req.n, 0, 0, nullptr);
sysCheckError(ret, "Failed to ", add ? "add" : "remove",
" rule for address ", addr,
" to lookup table ", getTableId(rid),
" for router ", rid);
LOG(INFO) << (add ? "Added" : "Removed") << " rule for address " << addr
<< " to lookup table " << getTableId(rid) << " for router " << rid;
}
Interface::Addresses::const_iterator Interface::getAddressToReach(
const folly::IPAddress& dest) const {
for (auto iter = getAddresses().begin();
iter != getAddresses().end();
iter ++) {
if (dest.inSubnet(iter->first, iter->second)) {
return iter;
}
}
return getAddresses().end();
}
void TunManager::addRemoveTunAddress(
const std::string& name, uint32_t ifIndex,
folly::IPAddress addr, uint8_t mask, bool add) {
struct {
struct nlmsghdr n;
struct ifaddrmsg ifa;
char buf[256];
} req;
memset(&req, 0, sizeof(req));
req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifaddrmsg));
if (add) {
req.n.nlmsg_flags = NLM_F_REQUEST|NLM_F_CREATE|NLM_F_EXCL;
req.n.nlmsg_type = RTM_NEWADDR;
} else {
req.n.nlmsg_flags = NLM_F_REQUEST;
req.n.nlmsg_type = RTM_DELADDR;
}
if (addr.isV4()) {
req.ifa.ifa_family = AF_INET;
addattr_l(&req.n, sizeof(req), IFA_LOCAL, addr.asV4().bytes(),
folly::IPAddressV4::byteCount());
} else {
req.ifa.ifa_family = AF_INET6;
addattr_l(&req.n, sizeof(req), IFA_LOCAL, addr.asV6().bytes(),
folly::IPAddressV6::byteCount());
}
req.ifa.ifa_prefixlen = mask;
req.ifa.ifa_index = ifIndex;
auto ret = rtnl_talk(&rth_, &req.n, 0, 0, nullptr);
sysCheckError(ret, "Failed to ", add ? "add" : "remove",
" address ", addr, "/", static_cast<int>(mask),
" to interface ", name, " @ index ", ifIndex);
LOG(INFO) << (add ? "Added" : "Removed") << " address " << addr.str() << "/"
<< static_cast<int>(mask) << " on interface " << name
<< " @ index " << ifIndex;
}
bool BcmRoute::deleteLpmRoute(int unitNumber,
opennsl_vrf_t vrf,
const folly::IPAddress& prefix,
uint8_t prefixLength) {
opennsl_l3_route_t rt;
initL3RouteFromArgs(&rt, vrf, prefix, prefixLength);
auto rc = opennsl_l3_route_delete(unitNumber, &rt);
if (OPENNSL_FAILURE(rc)) {
LOG(ERROR) << "Failed to delete a route entry for " << prefix << "/"
<< static_cast<int>(prefixLength)
<< " Error: " << opennsl_errmsg(rc);
return false;
} else {
VLOG(3) << "deleted a route entry for " << prefix.str() << "/"
<< static_cast<int>(prefixLength);
}
return true;
}