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authorLinus Torvalds <torvalds@linux-foundation.org>2012-10-10 23:52:35 +0900
committerLinus Torvalds <torvalds@linux-foundation.org>2012-10-10 23:52:35 +0900
commitdf632d3ce7eacf92ad9b642301c7b53a1d95b8d8 (patch)
tree848c39ed4f7cfdb582bf2e0a0a03147efaa5198d /net/sunrpc
parent2474542f64432398f503373f53bdf620491bcfa8 (diff)
parentaf283885b70248268617955a5ea5476647bd556b (diff)
downloadop-kernel-dev-df632d3ce7eacf92ad9b642301c7b53a1d95b8d8.zip
op-kernel-dev-df632d3ce7eacf92ad9b642301c7b53a1d95b8d8.tar.gz
Merge tag 'nfs-for-3.7-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull NFS client updates from Trond Myklebust: "Features include: - Remove CONFIG_EXPERIMENTAL dependency from NFSv4.1 Aside from the issues discussed at the LKS, distros are shipping NFSv4.1 with all the trimmings. - Fix fdatasync()/fsync() for the corner case of a server reboot. - NFSv4 OPEN access fix: finally distinguish correctly between open-for-read and open-for-execute permissions in all situations. - Ensure that the TCP socket is closed when we're in CLOSE_WAIT - More idmapper bugfixes - Lots of pNFS bugfixes and cleanups to remove unnecessary state and make the code easier to read. - In cases where a pNFS read or write fails, allow the client to resume trying layoutgets after two minutes of read/write- through-mds. - More net namespace fixes to the NFSv4 callback code. - More net namespace fixes to the NFSv3 locking code. - More NFSv4 migration preparatory patches. Including patches to detect network trunking in both NFSv4 and NFSv4.1 - pNFS block updates to optimise LAYOUTGET calls." * tag 'nfs-for-3.7-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (113 commits) pnfsblock: cleanup nfs4_blkdev_get NFS41: send real read size in layoutget NFS41: send real write size in layoutget NFS: track direct IO left bytes NFSv4.1: Cleanup ugliness in pnfs_layoutgets_blocked() NFSv4.1: Ensure that the layout sequence id stays 'close' to the current NFSv4.1: Deal with seqid wraparound in the pNFS return-on-close code NFSv4 set open access operation call flag in nfs4_init_opendata_res NFSv4.1: Remove the dependency on CONFIG_EXPERIMENTAL NFSv4 reduce attribute requests for open reclaim NFSv4: nfs4_open_done first must check that GETATTR decoded a file type NFSv4.1: Deal with wraparound when updating the layout "barrier" seqid NFSv4.1: Deal with wraparound issues when updating the layout stateid NFSv4.1: Always set the layout stateid if this is the first layoutget NFSv4.1: Fix another refcount issue in pnfs_find_alloc_layout NFSv4: don't put ACCESS in OPEN compound if O_EXCL NFSv4: don't check MAY_WRITE access bit in OPEN NFS: Set key construction data for the legacy upcall NFSv4.1: don't do two EXCHANGE_IDs on mount NFS: nfs41_walk_client_list(): re-lock before iterating ...
Diffstat (limited to 'net/sunrpc')
-rw-r--r--net/sunrpc/auth_gss/auth_gss.c58
-rw-r--r--net/sunrpc/clnt.c105
-rw-r--r--net/sunrpc/rpc_pipe.c8
-rw-r--r--net/sunrpc/sched.c2
-rw-r--r--net/sunrpc/xdr.c21
-rw-r--r--net/sunrpc/xprt.c8
-rw-r--r--net/sunrpc/xprtrdma/transport.c22
-rw-r--r--net/sunrpc/xprtsock.c40
8 files changed, 139 insertions, 125 deletions
diff --git a/net/sunrpc/auth_gss/auth_gss.c b/net/sunrpc/auth_gss/auth_gss.c
index 34c5220..909dc0c 100644
--- a/net/sunrpc/auth_gss/auth_gss.c
+++ b/net/sunrpc/auth_gss/auth_gss.c
@@ -239,7 +239,7 @@ gss_fill_context(const void *p, const void *end, struct gss_cl_ctx *ctx, struct
}
return q;
err:
- dprintk("RPC: gss_fill_context returning %ld\n", -PTR_ERR(p));
+ dprintk("RPC: %s returning %ld\n", __func__, -PTR_ERR(p));
return p;
}
@@ -301,10 +301,10 @@ __gss_find_upcall(struct rpc_pipe *pipe, uid_t uid)
if (pos->uid != uid)
continue;
atomic_inc(&pos->count);
- dprintk("RPC: gss_find_upcall found msg %p\n", pos);
+ dprintk("RPC: %s found msg %p\n", __func__, pos);
return pos;
}
- dprintk("RPC: gss_find_upcall found nothing\n");
+ dprintk("RPC: %s found nothing\n", __func__);
return NULL;
}
@@ -507,8 +507,8 @@ gss_refresh_upcall(struct rpc_task *task)
struct rpc_pipe *pipe;
int err = 0;
- dprintk("RPC: %5u gss_refresh_upcall for uid %u\n", task->tk_pid,
- cred->cr_uid);
+ dprintk("RPC: %5u %s for uid %u\n",
+ task->tk_pid, __func__, cred->cr_uid);
gss_msg = gss_setup_upcall(task->tk_client, gss_auth, cred);
if (PTR_ERR(gss_msg) == -EAGAIN) {
/* XXX: warning on the first, under the assumption we
@@ -539,8 +539,8 @@ gss_refresh_upcall(struct rpc_task *task)
spin_unlock(&pipe->lock);
gss_release_msg(gss_msg);
out:
- dprintk("RPC: %5u gss_refresh_upcall for uid %u result %d\n",
- task->tk_pid, cred->cr_uid, err);
+ dprintk("RPC: %5u %s for uid %u result %d\n",
+ task->tk_pid, __func__, cred->cr_uid, err);
return err;
}
@@ -553,7 +553,7 @@ gss_create_upcall(struct gss_auth *gss_auth, struct gss_cred *gss_cred)
DEFINE_WAIT(wait);
int err = 0;
- dprintk("RPC: gss_upcall for uid %u\n", cred->cr_uid);
+ dprintk("RPC: %s for uid %u\n", __func__, cred->cr_uid);
retry:
gss_msg = gss_setup_upcall(gss_auth->client, gss_auth, cred);
if (PTR_ERR(gss_msg) == -EAGAIN) {
@@ -594,8 +594,8 @@ out_intr:
finish_wait(&gss_msg->waitqueue, &wait);
gss_release_msg(gss_msg);
out:
- dprintk("RPC: gss_create_upcall for uid %u result %d\n",
- cred->cr_uid, err);
+ dprintk("RPC: %s for uid %u result %d\n",
+ __func__, cred->cr_uid, err);
return err;
}
@@ -681,7 +681,7 @@ err_put_ctx:
err:
kfree(buf);
out:
- dprintk("RPC: gss_pipe_downcall returning %Zd\n", err);
+ dprintk("RPC: %s returning %Zd\n", __func__, err);
return err;
}
@@ -747,8 +747,8 @@ gss_pipe_destroy_msg(struct rpc_pipe_msg *msg)
struct gss_upcall_msg *gss_msg = container_of(msg, struct gss_upcall_msg, msg);
if (msg->errno < 0) {
- dprintk("RPC: gss_pipe_destroy_msg releasing msg %p\n",
- gss_msg);
+ dprintk("RPC: %s releasing msg %p\n",
+ __func__, gss_msg);
atomic_inc(&gss_msg->count);
gss_unhash_msg(gss_msg);
if (msg->errno == -ETIMEDOUT)
@@ -976,7 +976,7 @@ gss_destroying_context(struct rpc_cred *cred)
static void
gss_do_free_ctx(struct gss_cl_ctx *ctx)
{
- dprintk("RPC: gss_free_ctx\n");
+ dprintk("RPC: %s\n", __func__);
gss_delete_sec_context(&ctx->gc_gss_ctx);
kfree(ctx->gc_wire_ctx.data);
@@ -999,7 +999,7 @@ gss_free_ctx(struct gss_cl_ctx *ctx)
static void
gss_free_cred(struct gss_cred *gss_cred)
{
- dprintk("RPC: gss_free_cred %p\n", gss_cred);
+ dprintk("RPC: %s cred=%p\n", __func__, gss_cred);
kfree(gss_cred);
}
@@ -1049,8 +1049,8 @@ gss_create_cred(struct rpc_auth *auth, struct auth_cred *acred, int flags)
struct gss_cred *cred = NULL;
int err = -ENOMEM;
- dprintk("RPC: gss_create_cred for uid %d, flavor %d\n",
- acred->uid, auth->au_flavor);
+ dprintk("RPC: %s for uid %d, flavor %d\n",
+ __func__, acred->uid, auth->au_flavor);
if (!(cred = kzalloc(sizeof(*cred), GFP_NOFS)))
goto out_err;
@@ -1069,7 +1069,7 @@ gss_create_cred(struct rpc_auth *auth, struct auth_cred *acred, int flags)
return &cred->gc_base;
out_err:
- dprintk("RPC: gss_create_cred failed with error %d\n", err);
+ dprintk("RPC: %s failed with error %d\n", __func__, err);
return ERR_PTR(err);
}
@@ -1127,7 +1127,7 @@ gss_marshal(struct rpc_task *task, __be32 *p)
struct kvec iov;
struct xdr_buf verf_buf;
- dprintk("RPC: %5u gss_marshal\n", task->tk_pid);
+ dprintk("RPC: %5u %s\n", task->tk_pid, __func__);
*p++ = htonl(RPC_AUTH_GSS);
cred_len = p++;
@@ -1253,7 +1253,7 @@ gss_validate(struct rpc_task *task, __be32 *p)
u32 flav,len;
u32 maj_stat;
- dprintk("RPC: %5u gss_validate\n", task->tk_pid);
+ dprintk("RPC: %5u %s\n", task->tk_pid, __func__);
flav = ntohl(*p++);
if ((len = ntohl(*p++)) > RPC_MAX_AUTH_SIZE)
@@ -1271,20 +1271,20 @@ gss_validate(struct rpc_task *task, __be32 *p)
if (maj_stat == GSS_S_CONTEXT_EXPIRED)
clear_bit(RPCAUTH_CRED_UPTODATE, &cred->cr_flags);
if (maj_stat) {
- dprintk("RPC: %5u gss_validate: gss_verify_mic returned "
- "error 0x%08x\n", task->tk_pid, maj_stat);
+ dprintk("RPC: %5u %s: gss_verify_mic returned error 0x%08x\n",
+ task->tk_pid, __func__, maj_stat);
goto out_bad;
}
/* We leave it to unwrap to calculate au_rslack. For now we just
* calculate the length of the verifier: */
cred->cr_auth->au_verfsize = XDR_QUADLEN(len) + 2;
gss_put_ctx(ctx);
- dprintk("RPC: %5u gss_validate: gss_verify_mic succeeded.\n",
- task->tk_pid);
+ dprintk("RPC: %5u %s: gss_verify_mic succeeded.\n",
+ task->tk_pid, __func__);
return p + XDR_QUADLEN(len);
out_bad:
gss_put_ctx(ctx);
- dprintk("RPC: %5u gss_validate failed.\n", task->tk_pid);
+ dprintk("RPC: %5u %s failed.\n", task->tk_pid, __func__);
return NULL;
}
@@ -1466,7 +1466,7 @@ gss_wrap_req(struct rpc_task *task,
struct gss_cl_ctx *ctx = gss_cred_get_ctx(cred);
int status = -EIO;
- dprintk("RPC: %5u gss_wrap_req\n", task->tk_pid);
+ dprintk("RPC: %5u %s\n", task->tk_pid, __func__);
if (ctx->gc_proc != RPC_GSS_PROC_DATA) {
/* The spec seems a little ambiguous here, but I think that not
* wrapping context destruction requests makes the most sense.
@@ -1489,7 +1489,7 @@ gss_wrap_req(struct rpc_task *task,
}
out:
gss_put_ctx(ctx);
- dprintk("RPC: %5u gss_wrap_req returning %d\n", task->tk_pid, status);
+ dprintk("RPC: %5u %s returning %d\n", task->tk_pid, __func__, status);
return status;
}
@@ -1604,8 +1604,8 @@ out_decode:
status = gss_unwrap_req_decode(decode, rqstp, p, obj);
out:
gss_put_ctx(ctx);
- dprintk("RPC: %5u gss_unwrap_resp returning %d\n", task->tk_pid,
- status);
+ dprintk("RPC: %5u %s returning %d\n",
+ task->tk_pid, __func__, status);
return status;
}
diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c
index fa48c60..cdc7564b 100644
--- a/net/sunrpc/clnt.c
+++ b/net/sunrpc/clnt.c
@@ -490,61 +490,86 @@ EXPORT_SYMBOL_GPL(rpc_create);
* same transport while varying parameters such as the authentication
* flavour.
*/
-struct rpc_clnt *
-rpc_clone_client(struct rpc_clnt *clnt)
+static struct rpc_clnt *__rpc_clone_client(struct rpc_create_args *args,
+ struct rpc_clnt *clnt)
{
- struct rpc_clnt *new;
struct rpc_xprt *xprt;
- int err = -ENOMEM;
+ struct rpc_clnt *new;
+ int err;
- new = kmemdup(clnt, sizeof(*new), GFP_KERNEL);
- if (!new)
- goto out_no_clnt;
- new->cl_parent = clnt;
- /* Turn off autobind on clones */
- new->cl_autobind = 0;
- INIT_LIST_HEAD(&new->cl_tasks);
- spin_lock_init(&new->cl_lock);
- rpc_init_rtt(&new->cl_rtt_default, clnt->cl_timeout->to_initval);
- new->cl_metrics = rpc_alloc_iostats(clnt);
- if (new->cl_metrics == NULL)
- goto out_no_stats;
- if (clnt->cl_principal) {
- new->cl_principal = kstrdup(clnt->cl_principal, GFP_KERNEL);
- if (new->cl_principal == NULL)
- goto out_no_principal;
- }
+ err = -ENOMEM;
rcu_read_lock();
xprt = xprt_get(rcu_dereference(clnt->cl_xprt));
rcu_read_unlock();
if (xprt == NULL)
- goto out_no_transport;
- rcu_assign_pointer(new->cl_xprt, xprt);
- atomic_set(&new->cl_count, 1);
- err = rpc_setup_pipedir(new, clnt->cl_program->pipe_dir_name);
- if (err != 0)
- goto out_no_path;
- rpc_clnt_set_nodename(new, utsname()->nodename);
- if (new->cl_auth)
- atomic_inc(&new->cl_auth->au_count);
+ goto out_err;
+ args->servername = xprt->servername;
+
+ new = rpc_new_client(args, xprt);
+ if (IS_ERR(new)) {
+ err = PTR_ERR(new);
+ goto out_put;
+ }
+
atomic_inc(&clnt->cl_count);
- rpc_register_client(new);
- rpciod_up();
+ new->cl_parent = clnt;
+
+ /* Turn off autobind on clones */
+ new->cl_autobind = 0;
+ new->cl_softrtry = clnt->cl_softrtry;
+ new->cl_discrtry = clnt->cl_discrtry;
+ new->cl_chatty = clnt->cl_chatty;
return new;
-out_no_path:
+
+out_put:
xprt_put(xprt);
-out_no_transport:
- kfree(new->cl_principal);
-out_no_principal:
- rpc_free_iostats(new->cl_metrics);
-out_no_stats:
- kfree(new);
-out_no_clnt:
+out_err:
dprintk("RPC: %s: returned error %d\n", __func__, err);
return ERR_PTR(err);
}
+
+/**
+ * rpc_clone_client - Clone an RPC client structure
+ *
+ * @clnt: RPC client whose parameters are copied
+ *
+ * Returns a fresh RPC client or an ERR_PTR.
+ */
+struct rpc_clnt *rpc_clone_client(struct rpc_clnt *clnt)
+{
+ struct rpc_create_args args = {
+ .program = clnt->cl_program,
+ .prognumber = clnt->cl_prog,
+ .version = clnt->cl_vers,
+ .authflavor = clnt->cl_auth->au_flavor,
+ .client_name = clnt->cl_principal,
+ };
+ return __rpc_clone_client(&args, clnt);
+}
EXPORT_SYMBOL_GPL(rpc_clone_client);
+/**
+ * rpc_clone_client_set_auth - Clone an RPC client structure and set its auth
+ *
+ * @clnt: RPC client whose parameters are copied
+ * @auth: security flavor for new client
+ *
+ * Returns a fresh RPC client or an ERR_PTR.
+ */
+struct rpc_clnt *
+rpc_clone_client_set_auth(struct rpc_clnt *clnt, rpc_authflavor_t flavor)
+{
+ struct rpc_create_args args = {
+ .program = clnt->cl_program,
+ .prognumber = clnt->cl_prog,
+ .version = clnt->cl_vers,
+ .authflavor = flavor,
+ .client_name = clnt->cl_principal,
+ };
+ return __rpc_clone_client(&args, clnt);
+}
+EXPORT_SYMBOL_GPL(rpc_clone_client_set_auth);
+
/*
* Kill all tasks for the given client.
* XXX: kill their descendants as well?
diff --git a/net/sunrpc/rpc_pipe.c b/net/sunrpc/rpc_pipe.c
index 21fde99..80f5dd2 100644
--- a/net/sunrpc/rpc_pipe.c
+++ b/net/sunrpc/rpc_pipe.c
@@ -1119,8 +1119,8 @@ rpc_fill_super(struct super_block *sb, void *data, int silent)
return -ENOMEM;
if (rpc_populate(root, files, RPCAUTH_lockd, RPCAUTH_RootEOF, NULL))
return -ENOMEM;
- dprintk("RPC: sending pipefs MOUNT notification for net %p%s\n", net,
- NET_NAME(net));
+ dprintk("RPC: sending pipefs MOUNT notification for net %p%s\n",
+ net, NET_NAME(net));
sn->pipefs_sb = sb;
err = blocking_notifier_call_chain(&rpc_pipefs_notifier_list,
RPC_PIPEFS_MOUNT,
@@ -1155,8 +1155,8 @@ static void rpc_kill_sb(struct super_block *sb)
sn->pipefs_sb = NULL;
mutex_unlock(&sn->pipefs_sb_lock);
put_net(net);
- dprintk("RPC: sending pipefs UMOUNT notification for net %p%s\n", net,
- NET_NAME(net));
+ dprintk("RPC: sending pipefs UMOUNT notification for net %p%s\n",
+ net, NET_NAME(net));
blocking_notifier_call_chain(&rpc_pipefs_notifier_list,
RPC_PIPEFS_UMOUNT,
sb);
diff --git a/net/sunrpc/sched.c b/net/sunrpc/sched.c
index 128494ec..6357fcb 100644
--- a/net/sunrpc/sched.c
+++ b/net/sunrpc/sched.c
@@ -1022,7 +1022,7 @@ static int rpciod_start(void)
* Create the rpciod thread and wait for it to start.
*/
dprintk("RPC: creating workqueue rpciod\n");
- wq = alloc_workqueue("rpciod", WQ_MEM_RECLAIM, 0);
+ wq = alloc_workqueue("rpciod", WQ_MEM_RECLAIM, 1);
rpciod_workqueue = wq;
return rpciod_workqueue != NULL;
}
diff --git a/net/sunrpc/xdr.c b/net/sunrpc/xdr.c
index 0afba1b..08f50af 100644
--- a/net/sunrpc/xdr.c
+++ b/net/sunrpc/xdr.c
@@ -730,19 +730,24 @@ static unsigned int xdr_align_pages(struct xdr_stream *xdr, unsigned int len)
if (xdr->nwords == 0)
return 0;
- if (nwords > xdr->nwords) {
- nwords = xdr->nwords;
- len = nwords << 2;
- }
/* Realign pages to current pointer position */
iov = buf->head;
- if (iov->iov_len > cur)
+ if (iov->iov_len > cur) {
xdr_shrink_bufhead(buf, iov->iov_len - cur);
+ xdr->nwords = XDR_QUADLEN(buf->len - cur);
+ }
- /* Truncate page data and move it into the tail */
- if (buf->page_len > len)
+ if (nwords > xdr->nwords) {
+ nwords = xdr->nwords;
+ len = nwords << 2;
+ }
+ if (buf->page_len <= len)
+ len = buf->page_len;
+ else if (nwords < xdr->nwords) {
+ /* Truncate page data and move it into the tail */
xdr_shrink_pagelen(buf, buf->page_len - len);
- xdr->nwords = XDR_QUADLEN(buf->len - cur);
+ xdr->nwords = XDR_QUADLEN(buf->len - cur);
+ }
return len;
}
diff --git a/net/sunrpc/xprt.c b/net/sunrpc/xprt.c
index 5d7f61d..bd462a5 100644
--- a/net/sunrpc/xprt.c
+++ b/net/sunrpc/xprt.c
@@ -231,7 +231,7 @@ EXPORT_SYMBOL_GPL(xprt_reserve_xprt);
static void xprt_clear_locked(struct rpc_xprt *xprt)
{
xprt->snd_task = NULL;
- if (!test_bit(XPRT_CLOSE_WAIT, &xprt->state) || xprt->shutdown) {
+ if (!test_bit(XPRT_CLOSE_WAIT, &xprt->state)) {
smp_mb__before_clear_bit();
clear_bit(XPRT_LOCKED, &xprt->state);
smp_mb__after_clear_bit();
@@ -504,9 +504,6 @@ EXPORT_SYMBOL_GPL(xprt_wait_for_buffer_space);
*/
void xprt_write_space(struct rpc_xprt *xprt)
{
- if (unlikely(xprt->shutdown))
- return;
-
spin_lock_bh(&xprt->transport_lock);
if (xprt->snd_task) {
dprintk("RPC: write space: waking waiting task on "
@@ -679,7 +676,7 @@ xprt_init_autodisconnect(unsigned long data)
struct rpc_xprt *xprt = (struct rpc_xprt *)data;
spin_lock(&xprt->transport_lock);
- if (!list_empty(&xprt->recv) || xprt->shutdown)
+ if (!list_empty(&xprt->recv))
goto out_abort;
if (test_and_set_bit(XPRT_LOCKED, &xprt->state))
goto out_abort;
@@ -1262,7 +1259,6 @@ out:
static void xprt_destroy(struct rpc_xprt *xprt)
{
dprintk("RPC: destroying transport %p\n", xprt);
- xprt->shutdown = 1;
del_timer_sync(&xprt->timer);
rpc_destroy_wait_queue(&xprt->binding);
diff --git a/net/sunrpc/xprtrdma/transport.c b/net/sunrpc/xprtrdma/transport.c
index 5d9202d..c9aa7a3 100644
--- a/net/sunrpc/xprtrdma/transport.c
+++ b/net/sunrpc/xprtrdma/transport.c
@@ -199,21 +199,15 @@ xprt_rdma_connect_worker(struct work_struct *work)
struct rpc_xprt *xprt = &r_xprt->xprt;
int rc = 0;
- if (!xprt->shutdown) {
- current->flags |= PF_FSTRANS;
- xprt_clear_connected(xprt);
-
- dprintk("RPC: %s: %sconnect\n", __func__,
- r_xprt->rx_ep.rep_connected != 0 ? "re" : "");
- rc = rpcrdma_ep_connect(&r_xprt->rx_ep, &r_xprt->rx_ia);
- if (rc)
- goto out;
- }
- goto out_clear;
+ current->flags |= PF_FSTRANS;
+ xprt_clear_connected(xprt);
+
+ dprintk("RPC: %s: %sconnect\n", __func__,
+ r_xprt->rx_ep.rep_connected != 0 ? "re" : "");
+ rc = rpcrdma_ep_connect(&r_xprt->rx_ep, &r_xprt->rx_ia);
+ if (rc)
+ xprt_wake_pending_tasks(xprt, rc);
-out:
- xprt_wake_pending_tasks(xprt, rc);
-out_clear:
dprintk("RPC: %s: exit\n", __func__);
xprt_clear_connecting(xprt);
current->flags &= ~PF_FSTRANS;
diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c
index a35b8e5..aaaadfb 100644
--- a/net/sunrpc/xprtsock.c
+++ b/net/sunrpc/xprtsock.c
@@ -917,9 +917,6 @@ static void xs_local_data_ready(struct sock *sk, int len)
if (skb == NULL)
goto out;
- if (xprt->shutdown)
- goto dropit;
-
repsize = skb->len - sizeof(rpc_fraghdr);
if (repsize < 4) {
dprintk("RPC: impossible RPC reply size %d\n", repsize);
@@ -981,9 +978,6 @@ static void xs_udp_data_ready(struct sock *sk, int len)
if ((skb = skb_recv_datagram(sk, 0, 1, &err)) == NULL)
goto out;
- if (xprt->shutdown)
- goto dropit;
-
repsize = skb->len - sizeof(struct udphdr);
if (repsize < 4) {
dprintk("RPC: impossible RPC reply size %d!\n", repsize);
@@ -1025,6 +1019,16 @@ static void xs_udp_data_ready(struct sock *sk, int len)
read_unlock_bh(&sk->sk_callback_lock);
}
+/*
+ * Helper function to force a TCP close if the server is sending
+ * junk and/or it has put us in CLOSE_WAIT
+ */
+static void xs_tcp_force_close(struct rpc_xprt *xprt)
+{
+ set_bit(XPRT_CONNECTION_CLOSE, &xprt->state);
+ xprt_force_disconnect(xprt);
+}
+
static inline void xs_tcp_read_fraghdr(struct rpc_xprt *xprt, struct xdr_skb_reader *desc)
{
struct sock_xprt *transport = container_of(xprt, struct sock_xprt, xprt);
@@ -1051,7 +1055,7 @@ static inline void xs_tcp_read_fraghdr(struct rpc_xprt *xprt, struct xdr_skb_rea
/* Sanity check of the record length */
if (unlikely(transport->tcp_reclen < 8)) {
dprintk("RPC: invalid TCP record fragment length\n");
- xprt_force_disconnect(xprt);
+ xs_tcp_force_close(xprt);
return;
}
dprintk("RPC: reading TCP record fragment of length %d\n",
@@ -1132,7 +1136,7 @@ static inline void xs_tcp_read_calldir(struct sock_xprt *transport,
break;
default:
dprintk("RPC: invalid request message type\n");
- xprt_force_disconnect(&transport->xprt);
+ xs_tcp_force_close(&transport->xprt);
}
xs_tcp_check_fraghdr(transport);
}
@@ -1402,9 +1406,6 @@ static void xs_tcp_data_ready(struct sock *sk, int bytes)
read_lock_bh(&sk->sk_callback_lock);
if (!(xprt = xprt_from_sock(sk)))
goto out;
- if (xprt->shutdown)
- goto out;
-
/* Any data means we had a useful conversation, so
* the we don't need to delay the next reconnect
*/
@@ -1455,6 +1456,8 @@ static void xs_tcp_cancel_linger_timeout(struct rpc_xprt *xprt)
static void xs_sock_mark_closed(struct rpc_xprt *xprt)
{
smp_mb__before_clear_bit();
+ clear_bit(XPRT_CONNECTION_ABORT, &xprt->state);
+ clear_bit(XPRT_CONNECTION_CLOSE, &xprt->state);
clear_bit(XPRT_CLOSE_WAIT, &xprt->state);
clear_bit(XPRT_CLOSING, &xprt->state);
smp_mb__after_clear_bit();
@@ -1512,8 +1515,8 @@ static void xs_tcp_state_change(struct sock *sk)
break;
case TCP_CLOSE_WAIT:
/* The server initiated a shutdown of the socket */
- xprt_force_disconnect(xprt);
xprt->connect_cookie++;
+ xs_tcp_force_close(xprt);
case TCP_CLOSING:
/*
* If the server closed down the connection, make sure that
@@ -1889,9 +1892,6 @@ static void xs_local_setup_socket(struct work_struct *work)
struct socket *sock;
int status = -EIO;
- if (xprt->shutdown)
- goto out;
-
current->flags |= PF_FSTRANS;
clear_bit(XPRT_CONNECTION_ABORT, &xprt->state);
@@ -2008,9 +2008,6 @@ static void xs_udp_setup_socket(struct work_struct *work)
struct socket *sock = transport->sock;
int status = -EIO;
- if (xprt->shutdown)
- goto out;
-
current->flags |= PF_FSTRANS;
/* Start by resetting any existing state */
@@ -2156,9 +2153,6 @@ static void xs_tcp_setup_socket(struct work_struct *work)
struct rpc_xprt *xprt = &transport->xprt;
int status = -EIO;
- if (xprt->shutdown)
- goto out;
-
current->flags |= PF_FSTRANS;
if (!sock) {
@@ -2199,8 +2193,7 @@ static void xs_tcp_setup_socket(struct work_struct *work)
/* We're probably in TIME_WAIT. Get rid of existing socket,
* and retry
*/
- set_bit(XPRT_CONNECTION_CLOSE, &xprt->state);
- xprt_force_disconnect(xprt);
+ xs_tcp_force_close(xprt);
break;
case -ECONNREFUSED:
case -ECONNRESET:
@@ -2528,6 +2521,7 @@ static struct rpc_xprt_ops xs_tcp_ops = {
static struct rpc_xprt_ops bc_tcp_ops = {
.reserve_xprt = xprt_reserve_xprt,
.release_xprt = xprt_release_xprt,
+ .alloc_slot = xprt_alloc_slot,
.rpcbind = xs_local_rpcbind,
.buf_alloc = bc_malloc,
.buf_free = bc_free,
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