NFSv4: parse and display server implementation ids
Shows the implementation ids in /proc/self/mountstats. This doesn't break the nfs-utils mountstats tool. Signed-off-by: Weston Andros Adamson <dros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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9edbd953f8
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7d2ed9ac22
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@ -304,6 +304,7 @@ static void nfs_free_client(struct nfs_client *clp)
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put_net(clp->net);
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kfree(clp->cl_hostname);
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kfree(clp->server_scope);
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kfree(clp->impl_id);
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kfree(clp);
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dprintk("<-- nfs_free_client()\n");
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@ -4950,10 +4950,23 @@ int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred)
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goto out;
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}
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res.impl_id = kzalloc(sizeof(struct nfs41_impl_id), GFP_KERNEL);
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if (unlikely(!res.impl_id)) {
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status = -ENOMEM;
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goto out_server_scope;
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}
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status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
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if (!status)
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status = nfs4_check_cl_exchange_flags(clp->cl_exchange_flags);
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if (!status) {
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/* use the most recent implementation id */
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kfree(clp->impl_id);
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clp->impl_id = res.impl_id;
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} else
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kfree(res.impl_id);
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if (!status) {
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if (clp->server_scope &&
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!nfs41_same_server_scope(clp->server_scope,
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@ -4970,8 +4983,16 @@ int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred)
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goto out;
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}
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}
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out_server_scope:
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kfree(res.server_scope);
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out:
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if (clp->impl_id)
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dprintk("%s: Server Implementation ID: "
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"domain: %s, name: %s, date: %llu,%u\n",
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__func__, clp->impl_id->domain, clp->impl_id->name,
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clp->impl_id->date.seconds,
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clp->impl_id->date.nseconds);
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dprintk("<-- %s status= %d\n", __func__, status);
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return status;
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}
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@ -291,7 +291,11 @@ static int nfs4_stat_to_errno(int);
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/* eir_server_scope<> */ \
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XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
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1 /* eir_server_impl_id array length */ + \
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0 /* ignored eir_server_impl_id contents */)
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1 /* nii_domain */ + \
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XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
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1 /* nii_name */ + \
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XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
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3 /* nii_date */)
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#define encode_channel_attrs_maxsz (6 + 1 /* ca_rdma_ird.len (0) */)
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#define decode_channel_attrs_maxsz (6 + \
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1 /* ca_rdma_ird.len */ + \
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@ -5256,6 +5260,7 @@ static int decode_exchange_id(struct xdr_stream *xdr,
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char *dummy_str;
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int status;
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struct nfs_client *clp = res->client;
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uint32_t impl_id_count;
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status = decode_op_hdr(xdr, OP_EXCHANGE_ID);
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if (status)
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@ -5297,11 +5302,38 @@ static int decode_exchange_id(struct xdr_stream *xdr,
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memcpy(res->server_scope->server_scope, dummy_str, dummy);
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res->server_scope->server_scope_sz = dummy;
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/* Throw away Implementation id array */
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status = decode_opaque_inline(xdr, &dummy, &dummy_str);
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if (unlikely(status))
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return status;
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/* Implementation Id */
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p = xdr_inline_decode(xdr, 4);
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if (unlikely(!p))
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goto out_overflow;
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impl_id_count = be32_to_cpup(p++);
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if (impl_id_count) {
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/* nii_domain */
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status = decode_opaque_inline(xdr, &dummy, &dummy_str);
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if (unlikely(status))
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return status;
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if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
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return -EIO;
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memcpy(res->impl_id->domain, dummy_str, dummy);
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/* nii_name */
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status = decode_opaque_inline(xdr, &dummy, &dummy_str);
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if (unlikely(status))
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return status;
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if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
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return -EIO;
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memcpy(res->impl_id->name, dummy_str, dummy);
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/* nii_date */
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p = xdr_inline_decode(xdr, 12);
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if (unlikely(!p))
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goto out_overflow;
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p = xdr_decode_hyper(p, &res->impl_id->date.seconds);
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res->impl_id->date.nseconds = be32_to_cpup(p);
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/* if there's more than one entry, ignore the rest */
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}
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return 0;
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out_overflow:
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print_overflow_msg(__func__, xdr);
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@ -809,6 +809,14 @@ static int nfs_show_stats(struct seq_file *m, struct dentry *root)
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seq_printf(m, "\n\tage:\t%lu", (jiffies - nfss->mount_time) / HZ);
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if (nfss->nfs_client && nfss->nfs_client->impl_id) {
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struct nfs41_impl_id *impl_id = nfss->nfs_client->impl_id;
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seq_printf(m, "\n\timpl_id:\tname='%s',domain='%s',"
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"date='%llu,%u'",
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impl_id->name, impl_id->domain,
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impl_id->date.seconds, impl_id->date.nseconds);
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}
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seq_printf(m, "\n\tcaps:\t");
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seq_printf(m, "caps=0x%x", nfss->caps);
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seq_printf(m, ",wtmult=%u", nfss->wtmult);
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@ -18,6 +18,7 @@ struct nfs4_sequence_res;
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struct nfs_server;
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struct nfs4_minor_version_ops;
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struct server_scope;
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struct nfs41_impl_id;
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/*
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* The nfs_client identifies our client state to the server.
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@ -86,6 +87,7 @@ struct nfs_client {
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#endif
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struct server_scope *server_scope; /* from exchange_id */
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struct nfs41_impl_id *impl_id; /* from exchange_id */
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struct net *net;
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};
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@ -1054,14 +1054,6 @@ struct nfstime4 {
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};
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#ifdef CONFIG_NFS_V4_1
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struct nfs_impl_id4 {
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u32 domain_len;
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char *domain;
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u32 name_len;
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char *name;
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struct nfstime4 date;
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};
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#define NFS4_EXCHANGE_ID_LEN (48)
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struct nfs41_exchange_id_args {
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struct nfs_client *client;
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@ -1082,10 +1074,17 @@ struct server_scope {
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char server_scope[NFS4_OPAQUE_LIMIT];
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};
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struct nfs41_impl_id {
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char domain[NFS4_OPAQUE_LIMIT + 1];
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char name[NFS4_OPAQUE_LIMIT + 1];
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struct nfstime4 date;
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};
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struct nfs41_exchange_id_res {
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struct nfs_client *client;
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u32 flags;
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struct server_scope *server_scope;
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struct nfs41_impl_id *impl_id;
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};
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struct nfs41_create_session_args {
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