int nfs4_proc_bind_conn_to_session(struct nfs_client *clp, struct rpc_cred *cred)
{
int status;
+ struct nfs41_bind_conn_to_session_args args = {
+ .client = clp,
+ .dir = NFS4_CDFC4_FORE_OR_BOTH,
+ };
struct nfs41_bind_conn_to_session_res res;
struct rpc_message msg = {
.rpc_proc =
&nfs4_procedures[NFSPROC4_CLNT_BIND_CONN_TO_SESSION],
- .rpc_argp = clp,
+ .rpc_argp = &args,
.rpc_resp = &res,
.rpc_cred = cred,
};
dprintk("--> %s\n", __func__);
- res.session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS);
- if (unlikely(res.session == NULL)) {
- status = -ENOMEM;
- goto out;
- }
+ nfs4_copy_sessionid(&args.sessionid, &clp->cl_session->sess_id);
+ if (!(clp->cl_session->flags & SESSION4_BACK_CHAN))
+ args.dir = NFS4_CDFC4_FORE;
status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
trace_nfs4_bind_conn_to_session(clp, status);
if (status == 0) {
- if (memcmp(res.session->sess_id.data,
+ if (memcmp(res.sessionid.data,
clp->cl_session->sess_id.data, NFS4_MAX_SESSIONID_LEN)) {
dprintk("NFS: %s: Session ID mismatch\n", __func__);
status = -EIO;
- goto out_session;
+ goto out;
}
- if (res.dir != NFS4_CDFS4_BOTH) {
+ if ((res.dir & args.dir) != res.dir || res.dir == 0) {
dprintk("NFS: %s: Unexpected direction from server\n",
__func__);
status = -EIO;
- goto out_session;
+ goto out;
}
- if (res.use_conn_in_rdma_mode) {
+ if (res.use_conn_in_rdma_mode != args.use_conn_in_rdma_mode) {
dprintk("NFS: %s: Server returned RDMA mode = true\n",
__func__);
status = -EIO;
- goto out_session;
+ goto out;
}
}
-out_session:
- kfree(res.session);
out:
dprintk("<-- %s status= %d\n", __func__, status);
return status;
args->bc_attrs.max_reqs);
}
-static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session)
+static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args,
+ struct nfs41_create_session_res *res)
{
struct nfs4_channel_attrs *sent = &args->fc_attrs;
- struct nfs4_channel_attrs *rcvd = &session->fc_attrs;
+ struct nfs4_channel_attrs *rcvd = &res->fc_attrs;
if (rcvd->max_resp_sz > sent->max_resp_sz)
return -EINVAL;
return 0;
}
-static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session)
+static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args,
+ struct nfs41_create_session_res *res)
{
struct nfs4_channel_attrs *sent = &args->bc_attrs;
- struct nfs4_channel_attrs *rcvd = &session->bc_attrs;
+ struct nfs4_channel_attrs *rcvd = &res->bc_attrs;
+ if (!(res->flags & SESSION4_BACK_CHAN))
+ goto out;
if (rcvd->max_rqst_sz > sent->max_rqst_sz)
return -EINVAL;
if (rcvd->max_resp_sz < sent->max_resp_sz)
return -EINVAL;
if (rcvd->max_reqs != sent->max_reqs)
return -EINVAL;
+out:
return 0;
}
static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args,
- struct nfs4_session *session)
+ struct nfs41_create_session_res *res)
{
int ret;
- ret = nfs4_verify_fore_channel_attrs(args, session);
+ ret = nfs4_verify_fore_channel_attrs(args, res);
if (ret)
return ret;
- return nfs4_verify_back_channel_attrs(args, session);
+ return nfs4_verify_back_channel_attrs(args, res);
+}
+
+static void nfs4_update_session(struct nfs4_session *session,
+ struct nfs41_create_session_res *res)
+{
+ nfs4_copy_sessionid(&session->sess_id, &res->sessionid);
+ session->flags = res->flags;
+ memcpy(&session->fc_attrs, &res->fc_attrs, sizeof(session->fc_attrs));
+ if (res->flags & SESSION4_BACK_CHAN)
+ memcpy(&session->bc_attrs, &res->bc_attrs,
+ sizeof(session->bc_attrs));
}
static int _nfs4_proc_create_session(struct nfs_client *clp,
struct nfs4_session *session = clp->cl_session;
struct nfs41_create_session_args args = {
.client = clp,
+ .clientid = clp->cl_clientid,
+ .seqid = clp->cl_seqid,
.cb_program = NFS4_CALLBACK,
};
- struct nfs41_create_session_res res = {
- .client = clp,
- };
+ struct nfs41_create_session_res res;
+
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION],
.rpc_argp = &args,
if (!status) {
/* Verify the session's negotiated channel_attrs values */
- status = nfs4_verify_channel_attrs(&args, session);
+ status = nfs4_verify_channel_attrs(&args, &res);
/* Increment the clientid slot sequence id */
- clp->cl_seqid++;
+ if (clp->cl_seqid == res.seqid)
+ clp->cl_seqid++;
+ if (status)
+ goto out;
+ nfs4_update_session(session, &res);
}
-
+out:
return status;
}