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tipc: refactor name table updates out of named packet receive routine

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We need to perform the same actions when processing deferred name
table updates, so this functionality is moved to a separate
function.

Signed-off-by: Erik Hugne <erik.hugne@ericsson.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Acked-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Erik Hugne 2014-08-28 09:08:46 +02:00 committed by David S. Miller
parent 1764bcd9fe
commit f4ad8a4b8b
1 changed files with 38 additions and 36 deletions
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74
net/tipc/name_distr.c
View File

@ -262,53 +262,55 @@ static void named_purge_publ(struct publication *publ)
kfree(p);
}
/**
* tipc_update_nametbl - try to process a nametable update and notify
* subscribers
*
* tipc_nametbl_lock must be held.
* Returns the publication item if successful, otherwise NULL.
*/
struct publication *tipc_update_nametbl(struct distr_item *i, u32 node,
u32 dtype)
{
struct publication *publ = NULL;
if (dtype == PUBLICATION) {
publ = tipc_nametbl_insert_publ(ntohl(i->type), ntohl(i->lower),
ntohl(i->upper),
TIPC_CLUSTER_SCOPE, node,
ntohl(i->ref), ntohl(i->key));
if (publ) {
tipc_nodesub_subscribe(&publ->subscr, node, publ,
(net_ev_handler)
named_purge_publ);
}
} else if (dtype == WITHDRAWAL) {
publ = tipc_nametbl_remove_publ(ntohl(i->type), ntohl(i->lower),
node, ntohl(i->ref),
ntohl(i->key));
if (publ) {
tipc_nodesub_unsubscribe(&publ->subscr);
kfree(publ);
}
} else {
pr_warn("Unrecognized name table message received\n");
}
return publ;
}
/**
* tipc_named_rcv - process name table update message sent by another node
*/
void tipc_named_rcv(struct sk_buff *buf)
{
struct publication *publ;
struct tipc_msg *msg = buf_msg(buf);
struct distr_item *item = (struct distr_item *)msg_data(msg);
u32 count = msg_data_sz(msg) / ITEM_SIZE;
write_lock_bh(&tipc_nametbl_lock);
while (count--) {
if (msg_type(msg) == PUBLICATION) {
publ = tipc_nametbl_insert_publ(ntohl(item->type),
ntohl(item->lower),
ntohl(item->upper),
TIPC_CLUSTER_SCOPE,
msg_orignode(msg),
ntohl(item->ref),
ntohl(item->key));
if (publ) {
tipc_nodesub_subscribe(&publ->subscr,
msg_orignode(msg),
publ,
(net_ev_handler)
named_purge_publ);
}
} else if (msg_type(msg) == WITHDRAWAL) {
publ = tipc_nametbl_remove_publ(ntohl(item->type),
ntohl(item->lower),
msg_orignode(msg),
ntohl(item->ref),
ntohl(item->key));
if (publ) {
tipc_nodesub_unsubscribe(&publ->subscr);
kfree(publ);
} else {
pr_err("Unable to remove publication by node 0x%x\n"
" (type=%u, lower=%u, ref=%u, key=%u)\n",
msg_orignode(msg), ntohl(item->type),
ntohl(item->lower), ntohl(item->ref),
ntohl(item->key));
}
} else {
pr_warn("Unrecognized name table message received\n");
}
tipc_update_nametbl(item, msg_orignode(msg),
msg_type(msg));
item++;
}
write_unlock_bh(&tipc_nametbl_lock);