NFS: Expand server address storage in nfs_client struct

Prepare for managing larger addresses in the NFS client by widening the
nfs_client struct's cl_addr field.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Cc: Aurelien Charbon <aurelien.charbon@ext.bull.net>
(Modified to work with the new parameters for nfs_alloc_client)
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

diff --git a/fs/nfs/client.c b/fs/nfs/client.c
index 876162c..44fe7fd 100644 (file)
--- a/fs/nfs/client.c
+++ b/fs/nfs/client.c
@@ -98,6 +98,7 @@ struct rpc_program            nfsacl_program = {
 struct nfs_client_initdata {
        const char *hostname;
        const struct sockaddr_in *addr;
+       size_t addrlen;
        const struct nfs_rpc_ops *rpc_ops;
 };
 
@@ -125,7 +126,8 @@ static struct nfs_client *nfs_alloc_client(const struct nfs_client_initdata *cl_
        atomic_set(&clp->cl_count, 1);
        clp->cl_cons_state = NFS_CS_INITING;
 
-       memcpy(&clp->cl_addr, cl_init->addr, sizeof(clp->cl_addr));
+       memcpy(&clp->cl_addr, cl_init->addr, cl_init->addrlen);
+       clp->cl_addrlen = cl_init->addrlen;
 
        if (cl_init->hostname) {
                clp->cl_hostname = kstrdup(cl_init->hostname, GFP_KERNEL);
@@ -425,7 +427,7 @@ static int nfs_create_rpc_client(struct nfs_client *clp, int proto,
        struct rpc_create_args args = {
                .protocol       = proto,
                .address        = (struct sockaddr *)&clp->cl_addr,
-               .addrsize       = sizeof(clp->cl_addr),
+               .addrsize       = clp->cl_addrlen,
                .timeout        = &timeparms,
                .servername     = clp->cl_hostname,
                .program        = &nfs_program,
@@ -585,6 +587,7 @@ static int nfs_init_server(struct nfs_server *server,
        struct nfs_client_initdata cl_init = {
                .hostname = data->nfs_server.hostname,
                .addr = &data->nfs_server.address,
+               .addrlen = sizeof(data->nfs_server.address),
                .rpc_ops = &nfs_v2_clientops,
        };
        struct nfs_client *clp;
@@ -938,6 +941,7 @@ static int nfs4_set_client(struct nfs_server *server,
        struct nfs_client_initdata cl_init = {
                .hostname = hostname,
                .addr = addr,
+               .addrlen = sizeof(*addr),
                .rpc_ops = &nfs_v4_clientops,
        };
        struct nfs_client *clp;

diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h
index 0b3dcba..912cfe8 100644 (file)
--- a/include/linux/nfs_fs_sb.h
+++ b/include/linux/nfs_fs_sb.h
@@ -21,7 +21,8 @@ struct nfs_client {
 #define NFS_CS_CALLBACK                1               /* - callback started */
 #define NFS_CS_IDMAP           2               /* - idmap started */
 #define NFS_CS_RENEWD          3               /* - renewd started */
-       struct sockaddr_in      cl_addr;        /* server identifier */
+       struct sockaddr_storage cl_addr;        /* server identifier */
+       size_t                  cl_addrlen;
        char *                  cl_hostname;    /* hostname of server */
        struct list_head        cl_share_link;  /* link in global client list */
        struct list_head        cl_superblocks; /* List of nfs_server structs */