int tipc_cfg_init(void)
{
struct tipc_name_seq seq;
int res;
memset(&mng, 0, sizeof(mng));
INIT_LIST_HEAD(&mng.link_subscribers);
res = tipc_attach(&mng.user_ref, NULL, NULL);
if (res)
goto failed;
res = tipc_createport(mng.user_ref, NULL, TIPC_CRITICAL_IMPORTANCE,
NULL, NULL, NULL,
NULL, cfg_named_msg_event, NULL,
NULL, &mng.port_ref);
if (res)
goto failed;
seq.type = TIPC_CFG_SRV;
seq.lower = seq.upper = tipc_own_addr;
res = tipc_nametbl_publish_rsv(mng.port_ref, TIPC_ZONE_SCOPE, &seq);
if (res)
goto failed;
return 0;
failed:
err("Unable to create configuration service\n");
tipc_detach(mng.user_ref);
mng.user_ref = 0;
return res;
}
int tipc_cfg_init(void)
{
struct tipc_name_seq seq;
int res;
res = tipc_createport(NULL, TIPC_CRITICAL_IMPORTANCE,
NULL, NULL, NULL,
NULL, cfg_named_msg_event, NULL,
NULL, &config_port_ref);
if (res)
goto failed;
seq.type = TIPC_CFG_SRV;
seq.lower = seq.upper = tipc_own_addr;
res = tipc_publish(config_port_ref, TIPC_ZONE_SCOPE, &seq);
if (res)
goto failed;
return 0;
failed:
err("Unable to create configuration service\n");
return res;
}
static void cfg_cmd_event(struct tipc_cmd_msg *msg,
char *data,
u32 sz,
struct tipc_portid const *orig)
{
int rv = -EINVAL;
struct tipc_cmd_result_msg rmsg;
struct iovec msg_sect[2];
int *arg;
msg->cmd = ntohl(msg->cmd);
cfg_prepare_res_msg(msg->cmd, msg->usr_handle, rv, &rmsg, msg_sect,
data, 0);
if (ntohl(msg->magic) != TIPC_MAGIC)
goto exit;
switch (msg->cmd) {
case TIPC_CREATE_LINK:
if (!cfg_check_connection(orig))
rv = disc_create_link(&msg->argv.create_link);
break;
case TIPC_LINK_SUBSCRIBE:
{
struct subscr_data *sub;
if (mng.link_subscriptions > 64)
break;
sub = kmalloc(sizeof(*sub),
GFP_ATOMIC);
if (sub == NULL) {
warn("Memory squeeze; dropped remote link subscription\n");
break;
}
INIT_LIST_HEAD(&sub->subd_list);
tipc_createport(mng.user_ref,
(void *)sub,
TIPC_HIGH_IMPORTANCE,
0,
0,
(tipc_conn_shutdown_event)cfg_linksubscr_cancel,
0,
0,
(tipc_conn_msg_event)cfg_linksubscr_cancel,
0,
&sub->port_ref);
if (!sub->port_ref) {
kfree(sub);
break;
}
memcpy(sub->usr_handle,msg->usr_handle,
sizeof(sub->usr_handle));
sub->domain = msg->argv.domain;
list_add_tail(&sub->subd_list, &mng.link_subscribers);
tipc_connect2port(sub->port_ref, orig);
rmsg.retval = TIPC_OK;
tipc_send(sub->port_ref, 2u, msg_sect);
mng.link_subscriptions++;
return;
}
default:
rv = tipc_cfg_cmd(msg, data, sz, (u32 *)&msg_sect[1].iov_len, orig);
}
exit:
rmsg.result_len = htonl(msg_sect[1].iov_len);
rmsg.retval = htonl(rv);
tipc_cfg_respond(msg_sect, 2u, orig);
}