static void nlm_gc_hosts(void);
static struct nsm_handle * __nsm_find(const struct sockaddr_in *,
const char *, int, int);
-
-/*
- * Find an NLM server handle in the cache. If there is none, create it.
- */
-struct nlm_host *
-nlmclnt_lookup_host(const struct sockaddr_in *sin, int proto, int version,
- const char *hostname, int hostname_len)
-{
- return nlm_lookup_host(0, sin, proto, version,
- hostname, hostname_len);
-}
-
-/*
- * Find an NLM client handle in the cache. If there is none, create it.
- */
-struct nlm_host *
-nlmsvc_lookup_host(struct svc_rqst *rqstp,
- const char *hostname, int hostname_len)
-{
- return nlm_lookup_host(1, &rqstp->rq_addr,
- rqstp->rq_prot, rqstp->rq_vers,
- hostname, hostname_len);
-}
+static struct nsm_handle * nsm_find(const struct sockaddr_in *sin,
+ const char *hostname,
+ int hostname_len);
/*
* Common host lookup routine for server & client
*/
-struct nlm_host *
+static struct nlm_host *
nlm_lookup_host(int server, const struct sockaddr_in *sin,
int proto, int version,
const char *hostname,
continue;
/* See if we have an NSM handle for this client */
- if (!nsm && (nsm = host->h_nsmhandle) != 0)
- atomic_inc(&nsm->sm_count);
+ if (!nsm)
+ nsm = host->h_nsmhandle;
if (host->h_proto != proto)
continue;
nlm_get_host(host);
goto out;
}
+ if (nsm)
+ atomic_inc(&nsm->sm_count);
host = NULL;
kfree(host);
}
+/*
+ * Find an NLM server handle in the cache. If there is none, create it.
+ */
struct nlm_host *
-nlm_find_client(void)
+nlmclnt_lookup_host(const struct sockaddr_in *sin, int proto, int version,
+ const char *hostname, int hostname_len)
{
- struct hlist_head *chain;
- struct hlist_node *pos;
-
- /* find a nlm_host for a client for which h_killed == 0.
- * and return it
- */
- mutex_lock(&nlm_host_mutex);
- for (chain = nlm_hosts; chain < nlm_hosts + NLM_HOST_NRHASH; ++chain) {
- struct nlm_host *host;
+ return nlm_lookup_host(0, sin, proto, version,
+ hostname, hostname_len);
+}
- hlist_for_each_entry(host, pos, chain, h_hash) {
- if (host->h_server &&
- host->h_killed == 0) {
- nlm_get_host(host);
- mutex_unlock(&nlm_host_mutex);
- return host;
- }
- }
- }
- mutex_unlock(&nlm_host_mutex);
- return NULL;
+/*
+ * Find an NLM client handle in the cache. If there is none, create it.
+ */
+struct nlm_host *
+nlmsvc_lookup_host(struct svc_rqst *rqstp,
+ const char *hostname, int hostname_len)
+{
+ return nlm_lookup_host(1, &rqstp->rq_addr,
+ rqstp->rq_prot, rqstp->rq_vers,
+ hostname, hostname_len);
}
-
/*
* Create the NLM RPC client for an NLM peer
*/
* Manage NSM handles
*/
static LIST_HEAD(nsm_handles);
-static DECLARE_MUTEX(nsm_sema);
+static DEFINE_MUTEX(nsm_mutex);
static struct nsm_handle *
__nsm_find(const struct sockaddr_in *sin,
return NULL;
}
- down(&nsm_sema);
+ mutex_lock(&nsm_mutex);
list_for_each(pos, &nsm_handles) {
nsm = list_entry(pos, struct nsm_handle, sm_link);
- if (!nlm_cmp_addr(&nsm->sm_addr, sin))
+ if (hostname && nsm_use_hostnames) {
+ if (strlen(nsm->sm_name) != hostname_len
+ || memcmp(nsm->sm_name, hostname, hostname_len))
+ continue;
+ } else if (!nlm_cmp_addr(&nsm->sm_addr, sin))
continue;
atomic_inc(&nsm->sm_count);
goto out;
list_add(&nsm->sm_link, &nsm_handles);
}
-out: up(&nsm_sema);
+out:
+ mutex_unlock(&nsm_mutex);
return nsm;
}
-struct nsm_handle *
+static struct nsm_handle *
nsm_find(const struct sockaddr_in *sin, const char *hostname, int hostname_len)
{
return __nsm_find(sin, hostname, hostname_len, 1);
if (!nsm)
return;
if (atomic_dec_and_test(&nsm->sm_count)) {
- down(&nsm_sema);
+ mutex_lock(&nsm_mutex);
if (atomic_read(&nsm->sm_count) == 0) {
list_del(&nsm->sm_link);
kfree(nsm);
}
- up(&nsm_sema);
+ mutex_unlock(&nsm_mutex);
}
}