2021-07-15 19:53:55

by Chuck Lever

[permalink] [raw]
Subject: [PATCH v2 3/7] SUNRPC: Eliminate the RQ_AUTHERR flag

Now that there is an alternate method for returning an auth_stat
value, replace the RQ_AUTHERR flag with use of that new method.

Signed-off-by: Chuck Lever <[email protected]>
---
fs/nfs/callback_xdr.c | 3 ++-
include/linux/sunrpc/svc.h | 2 --
include/trace/events/sunrpc.h | 3 +--
net/sunrpc/svc.c | 24 ++++--------------------
4 files changed, 7 insertions(+), 25 deletions(-)

diff --git a/fs/nfs/callback_xdr.c b/fs/nfs/callback_xdr.c
index c5348ba81129..7ff99155b023 100644
--- a/fs/nfs/callback_xdr.c
+++ b/fs/nfs/callback_xdr.c
@@ -988,7 +988,8 @@ static __be32 nfs4_callback_compound(struct svc_rqst *rqstp)

out_invalidcred:
pr_warn_ratelimited("NFS: NFSv4 callback contains invalid cred\n");
- return svc_return_autherr(rqstp, rpc_autherr_badcred);
+ rqstp->rq_auth_stat = rpc_autherr_badcred;
+ return rpc_success;
}

/*
diff --git a/include/linux/sunrpc/svc.h b/include/linux/sunrpc/svc.h
index 35f12963e1ff..63c9210cae06 100644
--- a/include/linux/sunrpc/svc.h
+++ b/include/linux/sunrpc/svc.h
@@ -275,7 +275,6 @@ struct svc_rqst {
#define RQ_VICTIM (5) /* about to be shut down */
#define RQ_BUSY (6) /* request is busy */
#define RQ_DATA (7) /* request has data */
-#define RQ_AUTHERR (8) /* Request status is auth error */
unsigned long rq_flags; /* flags field */
ktime_t rq_qtime; /* enqueue time */

@@ -533,7 +532,6 @@ unsigned int svc_fill_write_vector(struct svc_rqst *rqstp,
char *svc_fill_symlink_pathname(struct svc_rqst *rqstp,
struct kvec *first, void *p,
size_t total);
-__be32 svc_return_autherr(struct svc_rqst *rqstp, __be32 auth_err);
__be32 svc_generic_init_request(struct svc_rqst *rqstp,
const struct svc_program *progp,
struct svc_process_info *procinfo);
diff --git a/include/trace/events/sunrpc.h b/include/trace/events/sunrpc.h
index 9f09f5b4d0f8..174385da20ad 100644
--- a/include/trace/events/sunrpc.h
+++ b/include/trace/events/sunrpc.h
@@ -1568,8 +1568,7 @@ DEFINE_SVCXDRBUF_EVENT(sendto);
svc_rqst_flag(SPLICE_OK) \
svc_rqst_flag(VICTIM) \
svc_rqst_flag(BUSY) \
- svc_rqst_flag(DATA) \
- svc_rqst_flag_end(AUTHERR)
+ svc_rqst_flag_end(DATA)

#undef svc_rqst_flag
#undef svc_rqst_flag_end
diff --git a/net/sunrpc/svc.c b/net/sunrpc/svc.c
index 2019d1203641..95836bf514b5 100644
--- a/net/sunrpc/svc.c
+++ b/net/sunrpc/svc.c
@@ -1163,22 +1163,6 @@ void svc_printk(struct svc_rqst *rqstp, const char *fmt, ...)
static __printf(2,3) void svc_printk(struct svc_rqst *rqstp, const char *fmt, ...) {}
#endif

-__be32
-svc_return_autherr(struct svc_rqst *rqstp, __be32 auth_err)
-{
- set_bit(RQ_AUTHERR, &rqstp->rq_flags);
- return auth_err;
-}
-EXPORT_SYMBOL_GPL(svc_return_autherr);
-
-static __be32
-svc_get_autherr(struct svc_rqst *rqstp, __be32 *statp)
-{
- if (test_and_clear_bit(RQ_AUTHERR, &rqstp->rq_flags))
- return *statp;
- return rpc_auth_ok;
-}
-
static int
svc_generic_dispatch(struct svc_rqst *rqstp, __be32 *statp)
{
@@ -1202,7 +1186,7 @@ svc_generic_dispatch(struct svc_rqst *rqstp, __be32 *statp)
test_bit(RQ_DROPME, &rqstp->rq_flags))
return 0;

- if (test_bit(RQ_AUTHERR, &rqstp->rq_flags))
+ if (rqstp->rq_auth_stat != rpc_auth_ok)
return 1;

if (*statp != rpc_success)
@@ -1390,15 +1374,15 @@ svc_process_common(struct svc_rqst *rqstp, struct kvec *argv, struct kvec *resv)
goto release_dropit;
if (*statp == rpc_garbage_args)
goto err_garbage;
- rqstp->rq_auth_stat = svc_get_autherr(rqstp, statp);
- if (rqstp->rq_auth_stat != rpc_auth_ok)
- goto err_release_bad_auth;
} else {
dprintk("svc: calling dispatcher\n");
if (!process.dispatch(rqstp, statp))
goto release_dropit; /* Release reply info */
}

+ if (rqstp->rq_auth_stat != rpc_auth_ok)
+ goto err_release_bad_auth;
+
/* Check RPC status result */
if (*statp != rpc_success)
resv->iov_len = ((void*)statp) - resv->iov_base + 4;