svc: Move the authinfo cache to svc_xprt.
Move the authinfo cache to svc_xprt. This allows both the TCP and RDMA
transports to share this logic. A flag bit is used to determine if
auth information is to be cached or not. Previously, this code looked
at the transport protocol.
I've also changed the spin_lock/unlock logic so that a lock is not taken for
transports that are not caching auth info.
Signed-off-by: Tom Tucker <tom@opengridcomputing.com>
Acked-by: Neil Brown <neilb@suse.de>
Reviewed-by: Chuck Lever <chuck.lever@oracle.com>
Reviewed-by: Greg Banks <gnb@sgi.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
diff --git a/net/sunrpc/svcauth_unix.c b/net/sunrpc/svcauth_unix.c
index 41147941..6815157 100644
--- a/net/sunrpc/svcauth_unix.c
+++ b/net/sunrpc/svcauth_unix.c
@@ -384,41 +384,45 @@
static inline struct ip_map *
ip_map_cached_get(struct svc_rqst *rqstp)
{
- struct ip_map *ipm;
- struct svc_sock *svsk = rqstp->rq_sock;
- spin_lock(&svsk->sk_lock);
- ipm = svsk->sk_info_authunix;
- if (ipm != NULL) {
- if (!cache_valid(&ipm->h)) {
- /*
- * The entry has been invalidated since it was
- * remembered, e.g. by a second mount from the
- * same IP address.
- */
- svsk->sk_info_authunix = NULL;
- spin_unlock(&svsk->sk_lock);
- cache_put(&ipm->h, &ip_map_cache);
- return NULL;
+ struct ip_map *ipm = NULL;
+ struct svc_xprt *xprt = rqstp->rq_xprt;
+
+ if (test_bit(XPT_CACHE_AUTH, &xprt->xpt_flags)) {
+ spin_lock(&xprt->xpt_lock);
+ ipm = xprt->xpt_auth_cache;
+ if (ipm != NULL) {
+ if (!cache_valid(&ipm->h)) {
+ /*
+ * The entry has been invalidated since it was
+ * remembered, e.g. by a second mount from the
+ * same IP address.
+ */
+ xprt->xpt_auth_cache = NULL;
+ spin_unlock(&xprt->xpt_lock);
+ cache_put(&ipm->h, &ip_map_cache);
+ return NULL;
+ }
+ cache_get(&ipm->h);
}
- cache_get(&ipm->h);
+ spin_unlock(&xprt->xpt_lock);
}
- spin_unlock(&svsk->sk_lock);
return ipm;
}
static inline void
ip_map_cached_put(struct svc_rqst *rqstp, struct ip_map *ipm)
{
- struct svc_sock *svsk = rqstp->rq_sock;
+ struct svc_xprt *xprt = rqstp->rq_xprt;
- spin_lock(&svsk->sk_lock);
- if (svsk->sk_sock->type == SOCK_STREAM &&
- svsk->sk_info_authunix == NULL) {
- /* newly cached, keep the reference */
- svsk->sk_info_authunix = ipm;
- ipm = NULL;
+ if (test_bit(XPT_CACHE_AUTH, &xprt->xpt_flags)) {
+ spin_lock(&xprt->xpt_lock);
+ if (xprt->xpt_auth_cache == NULL) {
+ /* newly cached, keep the reference */
+ xprt->xpt_auth_cache = ipm;
+ ipm = NULL;
+ }
+ spin_unlock(&xprt->xpt_lock);
}
- spin_unlock(&svsk->sk_lock);
if (ipm)
cache_put(&ipm->h, &ip_map_cache);
}
