/**
* Allocate new cache manager
* @arg sk Netlink socket or NULL to auto allocate
* @arg protocol Netlink protocol this manager is used for
* @arg flags Flags (\c NL_AUTO_PROVIDE)
* @arg result Result pointer
*
* Allocates a new cache manager for the specified netlink protocol.
*
* 1. If sk is not specified (\c NULL) a netlink socket matching the
* specified protocol will be automatically allocated.
*
* 2. The socket will be put in non-blocking mode and sequence checking
* will be disabled regardless of whether the socket was provided by
* the caller or automatically allocated.
*
* 3. The socket will be connected.
*
* If the flag \c NL_AUTO_PROVIDE is specified, any cache added to the
* manager will automatically be made available to other users using
* nl_cache_mngt_provide().
*
* @note If the socket is provided by the caller, it is NOT recommended
* to use the socket for anything else besides receiving netlink
* notifications.
*
* @return 0 on success or a negative error code.
*/
int nl_cache_mngr_alloc(struct nl_sock *sk, int protocol, int flags,
struct nl_cache_mngr **result)
{
struct nl_cache_mngr *mngr;
int err = -NLE_NOMEM;
/* Catch abuse of flags */
if (flags & NL_ALLOCATED_SOCK)
BUG();
mngr = calloc(1, sizeof(*mngr));
if (!mngr)
return -NLE_NOMEM;
if (!sk) {
if (!(sk = nl_socket_alloc()))
goto errout;
flags |= NL_ALLOCATED_SOCK;
}
mngr->cm_sock = sk;
mngr->cm_nassocs = NASSOC_INIT;
mngr->cm_protocol = protocol;
mngr->cm_flags = flags;
mngr->cm_assocs = calloc(mngr->cm_nassocs,
sizeof(struct nl_cache_assoc));
if (!mngr->cm_assocs)
goto errout;
/* Required to receive async event notifications */
nl_socket_disable_seq_check(mngr->cm_sock);
if ((err = nl_connect(mngr->cm_sock, protocol)) < 0)
goto errout;
if ((err = nl_socket_set_nonblocking(mngr->cm_sock)) < 0)
goto errout;
/* Create and allocate socket for sync cache fills */
mngr->cm_sync_sock = nl_socket_alloc();
if (!mngr->cm_sync_sock) {
err = -NLE_NOMEM;
goto errout;
}
if ((err = nl_connect(mngr->cm_sync_sock, protocol)) < 0)
goto errout_free_sync_sock;
NL_DBG(1, "Allocated cache manager %p, protocol %d, %d caches\n",
mngr, protocol, mngr->cm_nassocs);
*result = mngr;
return 0;
errout_free_sync_sock:
nl_socket_free(mngr->cm_sync_sock);
errout:
nl_cache_mngr_free(mngr);
return err;
}
void
ind_ovs_port_finish(void)
{
ind_soc_socket_unregister(nl_cache_mngr_get_fd(route_cache_mngr));
nl_cache_mngr_free(route_cache_mngr);
nl_socket_free(route_cache_sock);
}
int main(int argc, char *argv[])
{
struct nl_cache_mngr *mngr;
struct nl_cache *cache;
int err, i;
dp.dp_fd = stdout;
signal(SIGINT, sigint);
err = nl_cache_mngr_alloc(NULL, NETLINK_ROUTE, NL_AUTO_PROVIDE, &mngr);
if (err < 0)
nl_cli_fatal(err, "Unable to allocate cache manager: %s",
nl_geterror(err));
for (i = 1; i < argc; i++) {
err = nl_cache_mngr_add(mngr, argv[i], &change_cb, NULL, &cache);
if (err < 0)
nl_cli_fatal(err, "Unable to add cache %s: %s",
argv[i], nl_geterror(err));
}
while (!quit) {
int err = nl_cache_mngr_poll(mngr, 1000);
if (err < 0 && err != -NLE_INTR)
nl_cli_fatal(err, "Polling failed: %s", nl_geterror(err));
nl_cache_mngr_info(mngr, &dp);
}
nl_cache_mngr_free(mngr);
return 0;
}
int main(int argc, char *argv[])
{
struct nl_cache_mngr *mngr;
struct nl_sock *sock;
struct nl_cache *ct;
sock = nlt_socket_alloc();
mngr = nl_cache_mngr_alloc(sock, NETLINK_NETFILTER, NL_AUTO_PROVIDE);
if (!mngr) {
nl_perror("nl_cache_mngr_alloc");
return -1;
}
ct = nl_cache_mngr_add(mngr, "netfilter/ct", &change_cb);
if (ct == NULL) {
nl_perror("nl_cache_mngr_add(netfilter/ct)");
return -1;
}
for (;;) {
int err = nl_cache_mngr_poll(mngr, 5000);
if (err < 0) {
nl_perror("nl_cache_mngr_poll()");
return -1;
}
}
nl_cache_mngr_free(mngr);
return 0;
}
static void
_g_water_nl_source_finalize(GSource *source)
{
GWaterNlSource *self = (GWaterNlSource *)source;
if ( self->owned )
{
nl_socket_free(self->sock);
nl_cache_mngr_free(self->cache_mngr);
}
}
netlink_wrapper::~netlink_wrapper()
{
nl_logdbg( "---> netlink_route_listener DTOR");
nl_cache_mngr_free(m_mngr);
nl_cache_free(m_cache_link);
nl_cache_free(m_cache_neigh);
nl_cache_free(m_cache_route);
nl_handle_destroy(m_handle);
subject_map_iter iter = m_subjects_map.begin();
while (iter != m_subjects_map.end()) {
delete iter->second;
iter = iter++;
}
nl_logdbg( "<--- netlink_route_listener DTOR");
}
/**
* Allocate new cache manager
* @arg sk Netlink socket.
* @arg protocol Netlink Protocol this manager is used for
* @arg flags Flags
* @arg result Result pointer
*
* @return 0 on success or a negative error code.
*/
int nl_cache_mngr_alloc(struct nl_sock *sk, int protocol, int flags,
struct nl_cache_mngr **result)
{
struct nl_cache_mngr *mngr;
int err = -NLE_NOMEM;
if (sk == NULL)
BUG();
mngr = calloc(1, sizeof(*mngr));
if (!mngr)
goto errout;
mngr->cm_handle = sk;
mngr->cm_nassocs = 32;
mngr->cm_protocol = protocol;
mngr->cm_flags = flags;
mngr->cm_assocs = calloc(mngr->cm_nassocs,
sizeof(struct nl_cache_assoc));
if (!mngr->cm_assocs)
goto errout;
nl_socket_modify_cb(mngr->cm_handle, NL_CB_VALID, NL_CB_CUSTOM,
event_input, mngr);
/* Required to receive async event notifications */
nl_socket_disable_seq_check(mngr->cm_handle);
if ((err = nl_connect(mngr->cm_handle, protocol) < 0))
goto errout;
if ((err = nl_socket_set_nonblocking(mngr->cm_handle) < 0))
goto errout;
NL_DBG(1, "Allocated cache manager %p, protocol %d, %d caches\n",
mngr, protocol, mngr->cm_nassocs);
*result = mngr;
return 0;
errout:
nl_cache_mngr_free(mngr);
return err;
}
int main(int argc, char *argv[])
{
struct nl_cache_mngr *mngr;
struct nl_cache *lc, *nc, *ac, *rc;
struct nl_sock *sock;
int err;
signal(SIGINT, sigint);
sock = nlt_alloc_socket();
err = nl_cache_mngr_alloc(sock, NETLINK_ROUTE, NL_AUTO_PROVIDE, &mngr);
if (err < 0)
fatal(err, "Unable to allocate cache manager: %s",
nl_geterror(err));
if ((err = nl_cache_mngr_add(mngr, "route/link", &change_cb, &lc)) < 0)
fatal(err, "Unable to add cache route/link: %s",
nl_geterror(err));
if ((err = nl_cache_mngr_add(mngr, "route/neigh", &change_cb, &nc)) < 0)
fatal(err, "Unable to add cache route/neigh: %s",
nl_geterror(err));
if ((err = nl_cache_mngr_add(mngr, "route/addr", &change_cb, &ac)) < 0)
fatal(err, "Unable to add cache route/addr: %s",
nl_geterror(err));
if ((err = nl_cache_mngr_add(mngr, "route/route", &change_cb, &rc)) < 0)
fatal(err, "Unable to add cache route/route: %s",
nl_geterror(err));
while (!quit) {
int err = nl_cache_mngr_poll(mngr, 5000);
if (err < 0 && err != -NLE_INTR)
fatal(err, "Polling failed: %s", nl_geterror(err));
}
nl_cache_mngr_free(mngr);
nl_socket_free(sock);
return 0;
}
