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Commit 382a62e7 authored by Stanislav Kinsbursky's avatar Stanislav Kinsbursky Committed by J. Bruce Fields
Browse files

nfsd: make conf_name_tree per net 



This tree holds nfs4_clients info, which are network namespace aware.
So let's make it per network namespace.

Signed-off-by: default avatarStanislav Kinsbursky <skinsbursky@parallels.com>
Signed-off-by: default avatarJ. Bruce Fields <bfields@redhat.com>
parent 8daae4dc

fs/nfsd/netns.h

+4 −0
Original line number Diff line number Diff line
@@ -47,10 +47,14 @@ struct nfsd_net { 
	/*

	 * reclaim_str_hashtbl[] holds known client info from previous reset/reboot

	 * used in reboot/reset lease grace period processing

	 *

	 * conf_id_hashtbl[], and conf_name_tree hold confirmed

	 * setclientid_confirmed info.

	 */

	struct list_head *reclaim_str_hashtbl;

	int reclaim_str_hashtbl_size;

	struct list_head *conf_id_hashtbl;

	struct rb_root conf_name_tree;

};



extern int nfsd_net_id;

fs/nfsd/nfs4state.c

+16 −15
Original line number Diff line number Diff line
@@ -404,9 +404,6 @@ static unsigned int clientstr_hashval(const char *name) 
}



/*

 * conf_id_hashtbl[], and conf_name_tree hold confirmed

 * setclientid_confirmed info.

 *

 * unconf_id_hashtbl[] and unconf_name_tree hold unconfirmed

 * setclientid info.

 *
@@ -419,7 +416,6 @@ static unsigned int clientstr_hashval(const char *name) 
 * All of the above fields are protected by the client_mutex.

 */

static struct list_head	unconf_id_hashtbl[CLIENT_HASH_SIZE];

static struct rb_root conf_name_tree;

static struct rb_root unconf_name_tree;

static struct list_head client_lru;

static struct list_head close_lru;
@@ -1114,6 +1110,7 @@ destroy_client(struct nfs4_client *clp) 
	struct nfs4_openowner *oo;

	struct nfs4_delegation *dp;

	struct list_head reaplist;

	struct nfsd_net *nn = net_generic(clp->net, nfsd_net_id);



	INIT_LIST_HEAD(&reaplist);

	spin_lock(&recall_lock);
@@ -1136,7 +1133,7 @@ destroy_client(struct nfs4_client *clp) 
		svc_xprt_put(clp->cl_cb_conn.cb_xprt);

	list_del(&clp->cl_idhash);

	if (test_bit(NFSD4_CLIENT_CONFIRMED, &clp->cl_flags))

		rb_erase(&clp->cl_namenode, &conf_name_tree);

		rb_erase(&clp->cl_namenode, &nn->conf_name_tree);

	else

		rb_erase(&clp->cl_namenode, &unconf_name_tree);

	spin_lock(&client_lock);
@@ -1389,7 +1386,7 @@ move_to_confirmed(struct nfs4_client *clp) 
	dprintk("NFSD: move_to_confirm nfs4_client %p\n", clp);

	list_move(&clp->cl_idhash, &nn->conf_id_hashtbl[idhashval]);

	rb_erase(&clp->cl_namenode, &unconf_name_tree);

	add_clp_to_name_tree(clp, &conf_name_tree);

	add_clp_to_name_tree(clp, &nn->conf_name_tree);

	set_bit(NFSD4_CLIENT_CONFIRMED, &clp->cl_flags);

	renew_client(clp);

}
@@ -1433,9 +1430,9 @@ static bool clp_used_exchangeid(struct nfs4_client *clp) 
} 



static struct nfs4_client *

find_confirmed_client_by_name(struct xdr_netobj *name)

find_confirmed_client_by_name(struct xdr_netobj *name, struct nfsd_net *nn)

{

	return find_clp_in_name_tree(name, &conf_name_tree);

	return find_clp_in_name_tree(name, &nn->conf_name_tree);

}



static struct nfs4_client *
@@ -1635,7 +1632,7 @@ nfsd4_exchange_id(struct svc_rqst *rqstp, 


	/* Cases below refer to rfc 5661 section 18.35.4: */

	nfs4_lock_state();

	conf = find_confirmed_client_by_name(&exid->clname);

	conf = find_confirmed_client_by_name(&exid->clname, nn);

	if (conf) {

		bool creds_match = same_creds(&conf->cl_cred, &rqstp->rq_cred);

		bool verfs_match = same_verf(&verf, &conf->cl_verifier);
@@ -1829,7 +1826,7 @@ nfsd4_create_session(struct svc_rqst *rqstp, 
			status = nfserr_seq_misordered;

			goto out_free_conn;

		}

		old = find_confirmed_client_by_name(&unconf->cl_name);

		old = find_confirmed_client_by_name(&unconf->cl_name, nn);

		if (old)

			expire_client(old);

		move_to_confirmed(unconf);
@@ -2227,7 +2224,7 @@ nfsd4_setclientid(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 


	/* Cases below refer to rfc 3530 section 14.2.33: */

	nfs4_lock_state();

	conf = find_confirmed_client_by_name(&clname);

	conf = find_confirmed_client_by_name(&clname, nn);

	if (conf) {

		/* case 0: */

		status = nfserr_clid_inuse;
@@ -2309,7 +2306,7 @@ nfsd4_setclientid_confirm(struct svc_rqst *rqstp, 
		nfsd4_probe_callback(conf);

		expire_client(unconf);

	} else { /* case 3: normal case; new or rebooted client */

		conf = find_confirmed_client_by_name(&unconf->cl_name);

		conf = find_confirmed_client_by_name(&unconf->cl_name, nn);

		if (conf)

			expire_client(conf);

		move_to_confirmed(unconf);
@@ -4726,7 +4723,6 @@ nfs4_state_init(void) 
	for (i = 0; i < CLIENT_HASH_SIZE; i++) {

		INIT_LIST_HEAD(&unconf_id_hashtbl[i]);

	}

	conf_name_tree = RB_ROOT;

	unconf_name_tree = RB_ROOT;

	for (i = 0; i < SESSION_HASH_SIZE; i++)

		INIT_LIST_HEAD(&sessionid_hashtbl[i]);
@@ -4772,12 +4768,17 @@ static int nfs4_state_start_net(struct net *net) 
	nn->conf_id_hashtbl = kmalloc(sizeof(struct list_head) *

			CLIENT_HASH_SIZE, GFP_KERNEL);

	if (!nn->conf_id_hashtbl)

		return -ENOMEM;

		goto err;



	for (i = 0; i < CLIENT_HASH_SIZE; i++)

	for (i = 0; i < CLIENT_HASH_SIZE; i++) {

		INIT_LIST_HEAD(&nn->conf_id_hashtbl[i]);

	}

	nn->conf_name_tree = RB_ROOT;



	return 0;



err:

	return -ENOMEM;

}



static void