diff options
Diffstat (limited to 'fs/nfs/client.c')
| -rw-r--r-- | fs/nfs/client.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/fs/nfs/client.c b/fs/nfs/client.c index 7a15832369e9..685c43f810c1 100644 --- a/fs/nfs/client.c +++ b/fs/nfs/client.c @@ -276,6 +276,41 @@ struct nfs_client *nfs_find_client(const struct sockaddr *addr, u32 nfsversion) } /* + * Find a client by IP address and protocol version + * - returns NULL if no such client + */ +struct nfs_client *nfs_find_client_next(struct nfs_client *clp) +{ + struct sockaddr *sap = (struct sockaddr *)&clp->cl_addr; + u32 nfsvers = clp->rpc_ops->version; + + spin_lock(&nfs_client_lock); + list_for_each_entry_continue(clp, &nfs_client_list, cl_share_link) { + struct sockaddr *clap = (struct sockaddr *)&clp->cl_addr; + + /* Don't match clients that failed to initialise properly */ + if (clp->cl_cons_state != NFS_CS_READY) + continue; + + /* Different NFS versions cannot share the same nfs_client */ + if (clp->rpc_ops->version != nfsvers) + continue; + + if (sap->sa_family != clap->sa_family) + continue; + /* Match only the IP address, not the port number */ + if (!nfs_sockaddr_match_ipaddr(sap, clap)) + continue; + + atomic_inc(&clp->cl_count); + spin_unlock(&nfs_client_lock); + return clp; + } + spin_unlock(&nfs_client_lock); + return NULL; +} + +/* * Find an nfs_client on the list that matches the initialisation data * that is supplied. */ |