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LOCKD: Convert to use new rpc_create() API

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Replace xprt_create_proto/rpc_create_client with new rpc_create()
interface in the Network Lock Manager.

Note that the semantics of NLM transports is now "hard" instead of "soft"
to provide a better guarantee that lock requests will get to the server.

Test plan:
Repeated runs of Connectathon locking suite.  Check network trace to ensure
NLM requests are working correctly.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Chuck Lever 2006-08-22 20:06:20 -04:00 committed by Trond Myklebust
parent c2866763b4
commit e1ec78928b
2 changed files with 42 additions and 45 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

48
fs/lockd/host.c
View File

@ -166,7 +166,6 @@ struct rpc_clnt *
nlm_bind_host(struct nlm_host *host)
{
struct rpc_clnt *clnt;
struct rpc_xprt *xprt;
dprintk("lockd: nlm_bind_host(%08x)\n",
(unsigned)ntohl(host->h_addr.sin_addr.s_addr));
@ -178,7 +177,6 @@ nlm_bind_host(struct nlm_host *host)
* RPC rebind is required
*/
if ((clnt = host->h_rpcclnt) != NULL) {
xprt = clnt->cl_xprt;
if (time_after_eq(jiffies, host->h_nextrebind)) {
rpc_force_rebind(clnt);
host->h_nextrebind = jiffies + NLM_HOST_REBIND;
@ -186,31 +184,37 @@ nlm_bind_host(struct nlm_host *host)
host->h_nextrebind - jiffies);
}
} else {
xprt = xprt_create_proto(host->h_proto, &host->h_addr, NULL);
if (IS_ERR(xprt))
goto forgetit;
unsigned long increment = nlmsvc_timeout * HZ;
struct rpc_timeout timeparms = {
.to_initval = increment,
.to_increment = increment,
.to_maxval = increment * 6UL,
.to_retries = 5U,
};
struct rpc_create_args args = {
.protocol = host->h_proto,
.address = (struct sockaddr *)&host->h_addr,
.addrsize = sizeof(host->h_addr),
.timeout = &timeparms,
.servername = host->h_name,
.program = &nlm_program,
.version = host->h_version,
.authflavor = RPC_AUTH_UNIX,
.flags = (RPC_CLNT_CREATE_HARDRTRY |
RPC_CLNT_CREATE_AUTOBIND),
};
xprt_set_timeout(&xprt->timeout, 5, nlmsvc_timeout);
xprt->resvport = 1; /* NLM requires a reserved port */
/* Existing NLM servers accept AUTH_UNIX only */
clnt = rpc_new_client(xprt, host->h_name, &nlm_program,
host->h_version, RPC_AUTH_UNIX);
if (IS_ERR(clnt))
goto forgetit;
clnt->cl_autobind = 1; /* turn on pmap queries */
clnt->cl_softrtry = 1; /* All queries are soft */
host->h_rpcclnt = clnt;
clnt = rpc_create(&args);
if (!IS_ERR(clnt))
host->h_rpcclnt = clnt;
else {
printk("lockd: couldn't create RPC handle for %s\n", host->h_name);
clnt = NULL;
}
}
mutex_unlock(&host->h_mutex);
return clnt;
forgetit:
printk("lockd: couldn't create RPC handle for %s\n", host->h_name);
mutex_unlock(&host->h_mutex);
return NULL;
}
/*

39
fs/lockd/mon.c
View File

@ -109,30 +109,23 @@ nsm_unmonitor(struct nlm_host *host)
static struct rpc_clnt *
nsm_create(void)
{
struct rpc_xprt *xprt;
struct rpc_clnt *clnt;
struct sockaddr_in sin;
struct sockaddr_in sin = {
.sin_family = AF_INET,
.sin_addr.s_addr = htonl(INADDR_LOOPBACK),
.sin_port = 0,
};
struct rpc_create_args args = {
.protocol = IPPROTO_UDP,
.address = (struct sockaddr *)&sin,
.addrsize = sizeof(sin),
.servername = "localhost",
.program = &nsm_program,
.version = SM_VERSION,
.authflavor = RPC_AUTH_NULL,
.flags = (RPC_CLNT_CREATE_ONESHOT),
};
sin.sin_family = AF_INET;
sin.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
sin.sin_port = 0;
xprt = xprt_create_proto(IPPROTO_UDP, &sin, NULL);
if (IS_ERR(xprt))
return (struct rpc_clnt *)xprt;
xprt->resvport = 1; /* NSM requires a reserved port */
clnt = rpc_create_client(xprt, "localhost",
&nsm_program, SM_VERSION,
RPC_AUTH_NULL);
if (IS_ERR(clnt))
goto out_err;
clnt->cl_softrtry = 1;
clnt->cl_oneshot = 1;
return clnt;
out_err:
return clnt;
return rpc_create(&args);
}
/*