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author | J. Bruce Fields <bfields@citi.umich.edu> | 2009-02-24 05:42:10 (GMT) |
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committer | J. Bruce Fields <bfields@citi.umich.edu> | 2009-04-29 20:45:03 (GMT) |
commit | 3cef9ab266a932899e756f7e1ea7a988a97bf3b2 (patch) | |
tree | a1fff617c936214a9e95bdec760904a28859126b /fs/nfsd/nfs4callback.c | |
parent | ecdd03b7914c91ef849e49c4d466c87f4981b5cd (diff) | |
download | linux-3cef9ab266a932899e756f7e1ea7a988a97bf3b2.tar.xz |
nfsd4: lookup up callback cred only once
Lookup the callback cred once and then use it for all subsequent
callbacks.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Diffstat (limited to 'fs/nfsd/nfs4callback.c')
-rw-r--r-- | fs/nfsd/nfs4callback.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c index 711c628..cc10ed3 100644 --- a/fs/nfsd/nfs4callback.c +++ b/fs/nfsd/nfs4callback.c @@ -415,6 +415,22 @@ static void warn_no_callback_path(struct nfs4_client *clp, int reason) (int)clp->cl_name.len, clp->cl_name.data, reason); } +static struct rpc_cred *lookup_cb_cred(struct nfs4_callback *cb) +{ + struct auth_cred acred = { + .machine_cred = 1 + }; + + /* + * Note in the gss case this doesn't actually have to wait for a + * gss upcall (or any calls to the client); this just creates a + * non-uptodate cred which the rpc state machine will fill in with + * a refresh_upcall later. + */ + return rpcauth_lookup_credcache(cb->cb_client->cl_auth, &acred, + RPCAUTH_LOOKUP_NEW); +} + static int do_probe_callback(void *data) { struct nfs4_client *clp = data; @@ -423,9 +439,18 @@ static int do_probe_callback(void *data) .rpc_proc = &nfs4_cb_procedures[NFSPROC4_CLNT_CB_NULL], .rpc_argp = clp, }; + struct rpc_cred *cred; int status; + cred = lookup_cb_cred(cb); + if (IS_ERR(cred)) { + status = PTR_ERR(cred); + goto out; + } + cb->cb_cred = cred; + msg.rpc_cred = cb->cb_cred; status = rpc_call_sync(cb->cb_client, &msg, RPC_TASK_SOFT); +out: if (status) warn_no_callback_path(clp, status); else @@ -475,6 +500,7 @@ nfsd4_cb_recall(struct nfs4_delegation *dp) struct rpc_message msg = { .rpc_proc = &nfs4_cb_procedures[NFSPROC4_CLNT_CB_RECALL], .rpc_argp = cbr, + .rpc_cred = clp->cl_callback.cb_cred }; int retries = 1; int status = 0; |