From 963d8fe53339128ee46a7701f2e36305f0ccff8c Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 3 Jan 2006 09:55:04 +0100 Subject: RPC: Clean up RPC task structure Shrink the RPC task structure. Instead of storing separate pointers for task->tk_exit and task->tk_release, put them in a structure. Also pass the user data pointer as a parameter instead of passing it via task->tk_calldata. This enables us to nest callbacks. Signed-off-by: Trond Myklebust --- include/linux/sunrpc/clnt.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux/sunrpc/clnt.h') diff --git a/include/linux/sunrpc/clnt.h b/include/linux/sunrpc/clnt.h index ab151bbb66d..b0ab959eca6 100644 --- a/include/linux/sunrpc/clnt.h +++ b/include/linux/sunrpc/clnt.h @@ -126,7 +126,8 @@ int rpc_register(u32, u32, int, unsigned short, int *); void rpc_call_setup(struct rpc_task *, struct rpc_message *, int); int rpc_call_async(struct rpc_clnt *clnt, struct rpc_message *msg, - int flags, rpc_action callback, void *clntdata); + int flags, const struct rpc_call_ops *tk_ops, + void *calldata); int rpc_call_sync(struct rpc_clnt *clnt, struct rpc_message *msg, int flags); void rpc_restart_call(struct rpc_task *); -- cgit v1.2.3-70-g09d2 From 35f5a422ce1af836007f811b613c440d0e348e06 Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Tue, 3 Jan 2006 09:55:50 +0100 Subject: SUNRPC: new interface to force an RPC rebind We'd like to hide fields in rpc_xprt and rpc_clnt from upper layer protocols. Start by creating an API to force RPC rebind, replacing logic that simply sets cl_port to zero. Test-plan: Destructive testing (unplugging the network temporarily). Connectathon with UDP and TCP. NFSv2/3 and NFSv4 mounting should be carefully checked. Probably need to rig a server where certain services aren't running, or that returns an error for some typical operation. Signed-off-by: Chuck Lever Signed-off-by: Trond Myklebust --- fs/lockd/host.c | 4 ++-- include/linux/sunrpc/clnt.h | 1 + net/sunrpc/clnt.c | 21 +++++++++++++++------ 3 files changed, 18 insertions(+), 8 deletions(-) (limited to 'include/linux/sunrpc/clnt.h') diff --git a/fs/lockd/host.c b/fs/lockd/host.c index c4c8601096e..82f7a0b1d8a 100644 --- a/fs/lockd/host.c +++ b/fs/lockd/host.c @@ -177,7 +177,7 @@ nlm_bind_host(struct nlm_host *host) if ((clnt = host->h_rpcclnt) != NULL) { xprt = clnt->cl_xprt; if (time_after_eq(jiffies, host->h_nextrebind)) { - clnt->cl_port = 0; + rpc_force_rebind(clnt); host->h_nextrebind = jiffies + NLM_HOST_REBIND; dprintk("lockd: next rebind in %ld jiffies\n", host->h_nextrebind - jiffies); @@ -217,7 +217,7 @@ nlm_rebind_host(struct nlm_host *host) { dprintk("lockd: rebind host %s\n", host->h_name); if (host->h_rpcclnt && time_after_eq(jiffies, host->h_nextrebind)) { - host->h_rpcclnt->cl_port = 0; + rpc_force_rebind(host->h_rpcclnt); host->h_nextrebind = jiffies + NLM_HOST_REBIND; } } diff --git a/include/linux/sunrpc/clnt.h b/include/linux/sunrpc/clnt.h index b0ab959eca6..3d605765f84 100644 --- a/include/linux/sunrpc/clnt.h +++ b/include/linux/sunrpc/clnt.h @@ -135,6 +135,7 @@ void rpc_clnt_sigmask(struct rpc_clnt *clnt, sigset_t *oldset); void rpc_clnt_sigunmask(struct rpc_clnt *clnt, sigset_t *oldset); void rpc_setbufsize(struct rpc_clnt *, unsigned int, unsigned int); size_t rpc_max_payload(struct rpc_clnt *); +void rpc_force_rebind(struct rpc_clnt *); int rpc_ping(struct rpc_clnt *clnt, int flags); static __inline__ diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c index 25cba94c568..2789d3083fe 100644 --- a/net/sunrpc/clnt.c +++ b/net/sunrpc/clnt.c @@ -538,6 +538,18 @@ size_t rpc_max_payload(struct rpc_clnt *clnt) } EXPORT_SYMBOL(rpc_max_payload); +/** + * rpc_force_rebind - force transport to check that remote port is unchanged + * @clnt: client to rebind + * + */ +void rpc_force_rebind(struct rpc_clnt *clnt) +{ + if (clnt->cl_autobind) + clnt->cl_port = 0; +} +EXPORT_SYMBOL(rpc_force_rebind); + /* * Restart an (async) RPC call. Usually called from within the * exit handler. @@ -853,8 +865,7 @@ call_connect_status(struct rpc_task *task) } /* Something failed: remote service port may have changed */ - if (clnt->cl_autobind) - clnt->cl_port = 0; + rpc_force_rebind(clnt); switch (status) { case -ENOTCONN: @@ -935,8 +946,7 @@ call_status(struct rpc_task *task) break; case -ECONNREFUSED: case -ENOTCONN: - if (clnt->cl_autobind) - clnt->cl_port = 0; + rpc_force_rebind(clnt); task->tk_action = call_bind; break; case -EAGAIN: @@ -995,8 +1005,7 @@ call_timeout(struct rpc_task *task) printk(KERN_NOTICE "%s: server %s not responding, still trying\n", clnt->cl_protname, clnt->cl_server); } - if (clnt->cl_autobind) - clnt->cl_port = 0; + rpc_force_rebind(clnt); retry: clnt->cl_stats->rpcretrans++; -- cgit v1.2.3-70-g09d2 From f518e35aec984036903c1003e867f833747a9d79 Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Tue, 3 Jan 2006 09:55:52 +0100 Subject: SUNRPC: get rid of cl_chatty Clean up: Every ULP that uses the in-kernel RPC client, except the NLM client, sets cl_chatty. There's no reason why NLM shouldn't set it, so just get rid of cl_chatty and always be verbose. Test-plan: Compile with CONFIG_NFS enabled. Signed-off-by: Chuck Lever Signed-off-by: Trond Myklebust --- fs/lockd/clntproc.c | 3 +-- fs/lockd/mon.c | 1 - fs/nfs/inode.c | 2 -- fs/nfs/mount_clnt.c | 1 - fs/nfsd/nfs4callback.c | 1 - include/linux/sunrpc/clnt.h | 1 - net/sunrpc/clnt.c | 10 ++++------ net/sunrpc/pmap_clnt.c | 1 - 8 files changed, 5 insertions(+), 15 deletions(-) (limited to 'include/linux/sunrpc/clnt.h') diff --git a/fs/lockd/clntproc.c b/fs/lockd/clntproc.c index 816333cd377..14552403957 100644 --- a/fs/lockd/clntproc.c +++ b/fs/lockd/clntproc.c @@ -222,8 +222,7 @@ nlmclnt_proc(struct inode *inode, int cmd, struct file_lock *fl) goto done; } clnt->cl_softrtry = nfssrv->client->cl_softrtry; - clnt->cl_intr = nfssrv->client->cl_intr; - clnt->cl_chatty = nfssrv->client->cl_chatty; + clnt->cl_intr = nfssrv->client->cl_intr; } /* Keep the old signal mask */ diff --git a/fs/lockd/mon.c b/fs/lockd/mon.c index 2d144abe84a..0edc03e6796 100644 --- a/fs/lockd/mon.c +++ b/fs/lockd/mon.c @@ -123,7 +123,6 @@ nsm_create(void) if (IS_ERR(clnt)) goto out_err; clnt->cl_softrtry = 1; - clnt->cl_chatty = 1; clnt->cl_oneshot = 1; return clnt; diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index 648cb1aef3b..4625479a6b6 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -413,7 +413,6 @@ nfs_create_client(struct nfs_server *server, const struct nfs_mount_data *data) clnt->cl_intr = 1; clnt->cl_softrtry = 1; - clnt->cl_chatty = 1; return clnt; @@ -1838,7 +1837,6 @@ static int nfs4_fill_super(struct super_block *sb, struct nfs4_mount_data *data, } clnt->cl_intr = 1; clnt->cl_softrtry = 1; - clnt->cl_chatty = 1; clp->cl_rpcclient = clnt; memcpy(clp->cl_ipaddr, server->ip_addr, sizeof(clp->cl_ipaddr)); nfs_idmap_new(clp); diff --git a/fs/nfs/mount_clnt.c b/fs/nfs/mount_clnt.c index 0e82617f2de..db99b8f678f 100644 --- a/fs/nfs/mount_clnt.c +++ b/fs/nfs/mount_clnt.c @@ -82,7 +82,6 @@ mnt_create(char *hostname, struct sockaddr_in *srvaddr, int version, RPC_AUTH_UNIX); if (!IS_ERR(clnt)) { clnt->cl_softrtry = 1; - clnt->cl_chatty = 1; clnt->cl_oneshot = 1; clnt->cl_intr = 1; } diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c index cf92008f219..d828662d737 100644 --- a/fs/nfsd/nfs4callback.c +++ b/fs/nfsd/nfs4callback.c @@ -431,7 +431,6 @@ nfsd4_probe_callback(struct nfs4_client *clp) } clnt->cl_intr = 0; clnt->cl_softrtry = 1; - clnt->cl_chatty = 1; /* Kick rpciod, put the call on the wire. */ diff --git a/include/linux/sunrpc/clnt.h b/include/linux/sunrpc/clnt.h index 3d605765f84..f147e6b8433 100644 --- a/include/linux/sunrpc/clnt.h +++ b/include/linux/sunrpc/clnt.h @@ -49,7 +49,6 @@ struct rpc_clnt { unsigned int cl_softrtry : 1,/* soft timeouts */ cl_intr : 1,/* interruptible */ - cl_chatty : 1,/* be verbose */ cl_autobind : 1,/* use getport() */ cl_oneshot : 1,/* dispose after use */ cl_dead : 1;/* abandoned */ diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c index 2789d3083fe..5530ac8c6df 100644 --- a/net/sunrpc/clnt.c +++ b/net/sunrpc/clnt.c @@ -957,8 +957,7 @@ call_status(struct rpc_task *task) rpc_exit(task, status); break; default: - if (clnt->cl_chatty) - printk("%s: RPC call returned error %d\n", + printk("%s: RPC call returned error %d\n", clnt->cl_protname, -status); rpc_exit(task, status); break; @@ -993,14 +992,13 @@ call_timeout(struct rpc_task *task) dprintk("RPC: %4d call_timeout (major)\n", task->tk_pid); if (RPC_IS_SOFT(task)) { - if (clnt->cl_chatty) - printk(KERN_NOTICE "%s: server %s not responding, timed out\n", + printk(KERN_NOTICE "%s: server %s not responding, timed out\n", clnt->cl_protname, clnt->cl_server); rpc_exit(task, -EIO); return; } - if (clnt->cl_chatty && !(task->tk_flags & RPC_CALL_MAJORSEEN)) { + if (!(task->tk_flags & RPC_CALL_MAJORSEEN)) { task->tk_flags |= RPC_CALL_MAJORSEEN; printk(KERN_NOTICE "%s: server %s not responding, still trying\n", clnt->cl_protname, clnt->cl_server); @@ -1027,7 +1025,7 @@ call_decode(struct rpc_task *task) dprintk("RPC: %4d call_decode (status %d)\n", task->tk_pid, task->tk_status); - if (clnt->cl_chatty && (task->tk_flags & RPC_CALL_MAJORSEEN)) { + if (task->tk_flags & RPC_CALL_MAJORSEEN) { printk(KERN_NOTICE "%s: server %s OK\n", clnt->cl_protname, clnt->cl_server); task->tk_flags &= ~RPC_CALL_MAJORSEEN; diff --git a/net/sunrpc/pmap_clnt.c b/net/sunrpc/pmap_clnt.c index 0935adb91b3..8139ce68e91 100644 --- a/net/sunrpc/pmap_clnt.c +++ b/net/sunrpc/pmap_clnt.c @@ -217,7 +217,6 @@ pmap_create(char *hostname, struct sockaddr_in *srvaddr, int proto, int privileg RPC_AUTH_UNIX); if (!IS_ERR(clnt)) { clnt->cl_softrtry = 1; - clnt->cl_chatty = 1; clnt->cl_oneshot = 1; } return clnt; -- cgit v1.2.3-70-g09d2