neigh_entry* neigh_table_mgr::create_new_entry(neigh_key neigh_key, const observer* new_observer)
{
observer * tmp = const_cast<observer *>(new_observer);
const neigh_observer * dst = dynamic_cast<const neigh_observer *>(tmp) ;
BULLSEYE_EXCLUDE_BLOCK_START
if (dst == NULL) {
//TODO: Need to add handling of this case
neigh_mgr_logpanic("dynamic_casr failed, new_observer type is not neigh_observer");
}
BULLSEYE_EXCLUDE_BLOCK_END
transport_type_t transport = dst->get_obs_transport_type();
if (transport == VMA_TRANSPORT_IB) {
if(IS_BROADCAST_N(neigh_key.get_in_addr())){
neigh_mgr_logdbg("Creating new neigh_ib_broadcast");
return (new neigh_ib_broadcast(neigh_key));
}
neigh_mgr_logdbg("Creating new neigh_ib");
return (new neigh_ib(neigh_key));
}
else if (transport == VMA_TRANSPORT_ETH) {
neigh_mgr_logdbg("Creating new neigh_eth");
return (new neigh_eth(neigh_key));
}
else {
neigh_mgr_logdbg("Cannot create new entry, transport type is UNKNOWN");
return NULL;
}
}
neigh_table_mgr::neigh_table_mgr():m_neigh_cma_event_channel(NULL)
{
// Creating cma_event_channel
m_neigh_cma_event_channel = rdma_create_event_channel();
BULLSEYE_EXCLUDE_BLOCK_START
if (m_neigh_cma_event_channel == NULL) {
neigh_mgr_logdbg("Failed to create neigh_cma_event_channel (errno=%d %m)", errno);
} else {
neigh_mgr_logdbg("Creation of neigh_cma_event_channel on fd=%d", m_neigh_cma_event_channel->fd);
}
BULLSEYE_EXCLUDE_BLOCK_END
start_garbage_collector(DEFAULT_GARBAGE_COLLECTOR_TIME);
}
void neigh_table_mgr::notify_cb(event *ev)
{
neigh_mgr_logdbg("");
// Got event from netlink
neigh_nl_event* nl_ev = dynamic_cast <neigh_nl_event*> (ev);
BULLSEYE_EXCLUDE_BLOCK_START
if (nl_ev == NULL) {
neigh_mgr_logdbg("Non neigh_nl_event type");
return;
}
BULLSEYE_EXCLUDE_BLOCK_END
const netlink_neigh_info* nl_info = nl_ev->get_neigh_info();
struct in_addr in;
if (1 != inet_pton(AF_INET, (const char *)(nl_info->dst_addr_str.c_str()), &in)) {
neigh_mgr_logdbg("Ignoring netlink neigh event neigh for IP = %s, not a valid IP", nl_info->dst_addr_str.c_str());
return;
}
in_addr_t neigh_ip = in.s_addr;
// Search for this neigh ip in cache_table
m_lock.lock();
net_device_val* p_ndev = g_p_net_device_table_mgr->get_net_device_val(nl_info->ifindex);
//find all neigh entries with an appropriate peer_ip and net_device
if (p_ndev) {
neigh_entry *p_ne = dynamic_cast <neigh_entry *>(get_entry(neigh_key(ip_address(neigh_ip), p_ndev)));
if (p_ne) {
// Call the relevant neigh_entry to handle the event
p_ne->handle_neigh_event(nl_ev);
} else {
neigh_mgr_logdbg("Ignoring netlink neigh event for IP = %s if:%s, index=%d, p_ndev=%p", nl_info->dst_addr_str.c_str(), p_ndev->to_str().c_str(), nl_info->ifindex, p_ndev);
}
} else {
neigh_mgr_logdbg("could not find ndv_val for ifindex=%d", nl_info->ifindex);
}
m_lock.unlock();
return;
}
bool neigh_table_mgr::register_observer(neigh_key key,
const cache_observer *new_observer,
cache_entry_subject<neigh_key, class neigh_val*> **cache_entry)
{
//Register to netlink event handler only if this is the first entry
if (get_cache_tbl_size() == 0) {
g_p_netlink_handler->register_event(nlgrpNEIGH, this);
neigh_mgr_logdbg("Registered to g_p_netlink_handler");
}
return cache_table_mgr<neigh_key, class neigh_val*>::register_observer(key, new_observer, cache_entry);
}
neigh_entry* neigh_table_mgr::create_new_entry(neigh_key neigh_key, const observer* new_observer)
{
observer * tmp = const_cast<observer *>(new_observer);
const neigh_observer * dst = dynamic_cast<const neigh_observer *>(tmp) ;
BULLSEYE_EXCLUDE_BLOCK_START
if (dst == NULL) {
//TODO: Need to add handling of this case
neigh_mgr_logpanic("dynamic_casr failed, new_observer type is not neigh_observer");
}
BULLSEYE_EXCLUDE_BLOCK_END
transport_type_t transport = dst->get_obs_transport_type();
//Register to netlink event handler only if this is the first entry
if (get_cache_tbl_size() == 0) {
g_p_netlink_handler->register_event(nlgrpNEIGH, this);
neigh_mgr_logdbg("Registered to g_p_netlink_handler");
}
if (transport == VMA_TRANSPORT_IB) {
if(IS_BROADCAST_N(neigh_key.get_in_addr())){
neigh_mgr_logdbg("Creating new neigh_ib_broadcast");
return (new neigh_ib_broadcast(neigh_key));
}
neigh_mgr_logdbg("Creating new neigh_ib");
return (new neigh_ib(neigh_key));
}
else if (transport == VMA_TRANSPORT_ETH) {
neigh_mgr_logdbg("Creating new neigh_eth");
return (new neigh_eth(neigh_key));
}
else {
neigh_mgr_logdbg("Cannot create new entry, transport type is UNKNOWN");
return NULL;
}
}
void neigh_table_mgr::notify_cb(event *ev)
{
neigh_mgr_logdbg("");
// Got event from netlink
neigh_nl_event* nl_ev = dynamic_cast <neigh_nl_event*> (ev);
BULLSEYE_EXCLUDE_BLOCK_START
if (nl_ev == NULL) {
neigh_mgr_logdbg("Non neigh_nl_event type");
return;
}
BULLSEYE_EXCLUDE_BLOCK_END
const netlink_neigh_info* nl_info = nl_ev->get_neigh_info();
struct in_addr in;
if (1 != inet_pton(AF_INET, (const char *)(nl_info->dst_addr_str.c_str()), &in)) {
neigh_mgr_logdbg("Ignoring netlink neigh event neigh for IP = %s, not a valid IP", nl_info->dst_addr_str.c_str());
return;
}
in_addr_t neigh_ip = in.s_addr;
// Search for this neigh ip in cache_table
m_lock.lock();
net_dev_lst_t* p_ndv_val_lst = g_p_net_device_table_mgr->get_net_device_val_lst_from_index(nl_info->ifindex);
//find all neigh entries with an appropriate peer_ip and net_device
if (p_ndv_val_lst) {
net_dev_lst_t::iterator itr;
for (itr = p_ndv_val_lst->begin(); itr != p_ndv_val_lst->end(); ++itr) {
net_device_val* p_ndev = dynamic_cast <net_device_val *>(*itr);
if (p_ndev) {
std::tr1::unordered_map< neigh_key, cache_entry_subject<neigh_key,neigh_val*> *>::iterator cache_itr;
cache_itr = m_cache_tbl.find(neigh_key(ip_address(neigh_ip), p_ndev));
if (cache_itr == m_cache_tbl.end()) {
neigh_mgr_logdbg("Ignoring netlink neigh event for IP = %s if:%s, index=%d, p_ndev=%p", nl_info->dst_addr_str.c_str(), p_ndev->to_str().c_str(), nl_info->ifindex, p_ndev);
}
else {
neigh_entry *p_ne = dynamic_cast <neigh_entry *>(cache_itr->second);
if (p_ne) {
// Call the relevant neigh_entry to handle the event
p_ne->handle_neigh_event(nl_ev);
}
}
} else {
neigh_mgr_logdbg("could not find ndv_val for ifindex=%d", nl_info->ifindex);
}
}
} else {
neigh_mgr_logdbg("could not find ndv_val list for ifindex=%d", nl_info->ifindex);
}
m_lock.unlock();
return;
}
