[PATCH 11/27] afs: Remove the error argument from afs_protocol_error()

From: David Howells
Date: Fri May 29 2020 - 18:01:36 EST

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In reply to: David Howells: "[PATCH 10/27] afs: Set error flag rather than return error from file status decode"
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Remove the error argument from afs_protocol_error() as it's always
-EBADMSG.

Signed-off-by: David Howells <dhowells@xxxxxxxxxx>
---

fs/afs/cmservice.c | 9 +++------
fs/afs/fsclient.c | 17 ++++++-----------
fs/afs/inode.c | 4 ++--
fs/afs/internal.h | 2 +-
fs/afs/rxrpc.c | 6 +++---
fs/afs/vlclient.c | 34 ++++++++++++++--------------------
fs/afs/yfsclient.c | 17 ++++++-----------
include/trace/events/afs.h | 10 ++++------
8 files changed, 39 insertions(+), 60 deletions(-)

diff --git a/fs/afs/cmservice.c b/fs/afs/cmservice.c
index 7ae88958051f..ed0fb34d77dd 100644
--- a/fs/afs/cmservice.c
+++ b/fs/afs/cmservice.c
@@ -307,8 +307,7 @@ static int afs_deliver_cb_callback(struct afs_call *call)
call->count = ntohl(call->tmp);
_debug("FID count: %u", call->count);
if (call->count > AFSCBMAX)
- return afs_protocol_error(call, -EBADMSG,
- afs_eproto_cb_fid_count);
+ return afs_protocol_error(call, afs_eproto_cb_fid_count);

call->buffer = kmalloc(array3_size(call->count, 3, 4),
GFP_KERNEL);
@@ -353,8 +352,7 @@ static int afs_deliver_cb_callback(struct afs_call *call)
call->count2 = ntohl(call->tmp);
_debug("CB count: %u", call->count2);
if (call->count2 != call->count && call->count2 != 0)
- return afs_protocol_error(call, -EBADMSG,
- afs_eproto_cb_count);
+ return afs_protocol_error(call, afs_eproto_cb_count);
call->iter = &call->def_iter;
iov_iter_discard(&call->def_iter, READ, call->count2 * 3 * 4);
call->unmarshall++;
@@ -674,8 +672,7 @@ static int afs_deliver_yfs_cb_callback(struct afs_call *call)
call->count = ntohl(call->tmp);
_debug("FID count: %u", call->count);
if (call->count > YFSCBMAX)
- return afs_protocol_error(call, -EBADMSG,
- afs_eproto_cb_fid_count);
+ return afs_protocol_error(call, afs_eproto_cb_fid_count);

size = array_size(call->count, sizeof(struct yfs_xdr_YFSFid));
call->buffer = kmalloc(size, GFP_KERNEL);
diff --git a/fs/afs/fsclient.c b/fs/afs/fsclient.c
index b1d8d8f780d2..7d4503174dd1 100644
--- a/fs/afs/fsclient.c
+++ b/fs/afs/fsclient.c
@@ -130,7 +130,7 @@ static void xdr_decode_AFSFetchStatus(const __be32 **_bp,

bad:
xdr_dump_bad(*_bp);
- afs_protocol_error(call, -EBADMSG, afs_eproto_bad_status);
+ afs_protocol_error(call, afs_eproto_bad_status);
goto advance;
}

@@ -1470,8 +1470,7 @@ static int afs_deliver_fs_get_volume_status(struct afs_call *call)
call->count = ntohl(call->tmp);
_debug("volname length: %u", call->count);
if (call->count >= AFSNAMEMAX)
- return afs_protocol_error(call, -EBADMSG,
- afs_eproto_volname_len);
+ return afs_protocol_error(call, afs_eproto_volname_len);
size = (call->count + 3) & ~3; /* It's padded */
afs_extract_to_buf(call, size);
call->unmarshall++;
@@ -1500,8 +1499,7 @@ static int afs_deliver_fs_get_volume_status(struct afs_call *call)
call->count = ntohl(call->tmp);
_debug("offline msg length: %u", call->count);
if (call->count >= AFSNAMEMAX)
- return afs_protocol_error(call, -EBADMSG,
- afs_eproto_offline_msg_len);
+ return afs_protocol_error(call, afs_eproto_offline_msg_len);
size = (call->count + 3) & ~3; /* It's padded */
afs_extract_to_buf(call, size);
call->unmarshall++;
@@ -1531,8 +1529,7 @@ static int afs_deliver_fs_get_volume_status(struct afs_call *call)
call->count = ntohl(call->tmp);
_debug("motd length: %u", call->count);
if (call->count >= AFSNAMEMAX)
- return afs_protocol_error(call, -EBADMSG,
- afs_eproto_motd_len);
+ return afs_protocol_error(call, afs_eproto_motd_len);
size = (call->count + 3) & ~3; /* It's padded */
afs_extract_to_buf(call, size);
call->unmarshall++;
@@ -2012,8 +2009,7 @@ static int afs_deliver_fs_inline_bulk_status(struct afs_call *call)
tmp = ntohl(call->tmp);
_debug("status count: %u/%u", tmp, call->count2);
if (tmp != call->count2)
- return afs_protocol_error(call, -EBADMSG,
- afs_eproto_ibulkst_count);
+ return afs_protocol_error(call, afs_eproto_ibulkst_count);

call->count = 0;
call->unmarshall++;
@@ -2049,8 +2045,7 @@ static int afs_deliver_fs_inline_bulk_status(struct afs_call *call)
tmp = ntohl(call->tmp);
_debug("CB count: %u", tmp);
if (tmp != call->count2)
- return afs_protocol_error(call, -EBADMSG,
- afs_eproto_ibulkst_cb_count);
+ return afs_protocol_error(call, afs_eproto_ibulkst_cb_count);
call->count = 0;
call->unmarshall++;
more_cbs:
diff --git a/fs/afs/inode.c b/fs/afs/inode.c
index 281470fe1183..07933d106e0e 100644
--- a/fs/afs/inode.c
+++ b/fs/afs/inode.c
@@ -130,7 +130,7 @@ static int afs_inode_init_from_status(struct afs_vnode *vnode, struct key *key,
default:
dump_vnode(vnode, parent_vnode);
write_sequnlock(&vnode->cb_lock);
- return afs_protocol_error(NULL, -EBADMSG, afs_eproto_file_type);
+ return afs_protocol_error(NULL, afs_eproto_file_type);
}

afs_set_i_size(vnode, status->size);
@@ -179,7 +179,7 @@ static void afs_apply_status(struct afs_fs_cursor *fc,
vnode->fid.vnode,
vnode->fid.unique,
status->type, vnode->status.type);
- afs_protocol_error(NULL, -EBADMSG, afs_eproto_bad_status);
+ afs_protocol_error(NULL, afs_eproto_bad_status);
return;
}

diff --git a/fs/afs/internal.h b/fs/afs/internal.h
index 6d5c66dd76de..468bd2b0470d 100644
--- a/fs/afs/internal.h
+++ b/fs/afs/internal.h
@@ -1133,7 +1133,7 @@ extern void afs_flat_call_destructor(struct afs_call *);
extern void afs_send_empty_reply(struct afs_call *);
extern void afs_send_simple_reply(struct afs_call *, const void *, size_t);
extern int afs_extract_data(struct afs_call *, bool);
-extern int afs_protocol_error(struct afs_call *, int, enum afs_eproto_cause);
+extern int afs_protocol_error(struct afs_call *, enum afs_eproto_cause);

static inline void afs_set_fc_call(struct afs_call *call, struct afs_fs_cursor *fc)
{
diff --git a/fs/afs/rxrpc.c b/fs/afs/rxrpc.c
index c84d571782d7..00b87bac4fec 100644
--- a/fs/afs/rxrpc.c
+++ b/fs/afs/rxrpc.c
@@ -961,11 +961,11 @@ int afs_extract_data(struct afs_call *call, bool want_more)
/*
* Log protocol error production.
*/
-noinline int afs_protocol_error(struct afs_call *call, int error,
+noinline int afs_protocol_error(struct afs_call *call,
enum afs_eproto_cause cause)
{
- trace_afs_protocol_error(call, error, cause);
+ trace_afs_protocol_error(call, cause);
if (call)
call->unmarshalling_error = true;
- return error;
+ return -EBADMSG;
}
diff --git a/fs/afs/vlclient.c b/fs/afs/vlclient.c
index 972dc5512f33..d0c85623ce8f 100644
--- a/fs/afs/vlclient.c
+++ b/fs/afs/vlclient.c
@@ -448,8 +448,7 @@ static int afs_deliver_yfsvl_get_endpoints(struct afs_call *call)
call->count2 = ntohl(*bp); /* Type or next count */

if (call->count > YFS_MAXENDPOINTS)
- return afs_protocol_error(call, -EBADMSG,
- afs_eproto_yvl_fsendpt_num);
+ return afs_protocol_error(call, afs_eproto_yvl_fsendpt_num);

alist = afs_alloc_addrlist(call->count, FS_SERVICE, AFS_FS_PORT);
if (!alist)
@@ -469,8 +468,7 @@ static int afs_deliver_yfsvl_get_endpoints(struct afs_call *call)
size = sizeof(__be32) * (1 + 4 + 1);
break;
default:
- return afs_protocol_error(call, -EBADMSG,
- afs_eproto_yvl_fsendpt_type);
+ return afs_protocol_error(call, afs_eproto_yvl_fsendpt_type);
}

size += sizeof(__be32);
@@ -488,21 +486,20 @@ static int afs_deliver_yfsvl_get_endpoints(struct afs_call *call)
switch (call->count2) {
case YFS_ENDPOINT_IPV4:
if (ntohl(bp[0]) != sizeof(__be32) * 2)
- return afs_protocol_error(call, -EBADMSG,
- afs_eproto_yvl_fsendpt4_len);
+ return afs_protocol_error(
+ call, afs_eproto_yvl_fsendpt4_len);
afs_merge_fs_addr4(alist, bp[1], ntohl(bp[2]));
bp += 3;
break;
case YFS_ENDPOINT_IPV6:
if (ntohl(bp[0]) != sizeof(__be32) * 5)
- return afs_protocol_error(call, -EBADMSG,
- afs_eproto_yvl_fsendpt6_len);
+ return afs_protocol_error(
+ call, afs_eproto_yvl_fsendpt6_len);
afs_merge_fs_addr6(alist, bp + 1, ntohl(bp[5]));
bp += 6;
break;
default:
- return afs_protocol_error(call, -EBADMSG,
- afs_eproto_yvl_fsendpt_type);
+ return afs_protocol_error(call, afs_eproto_yvl_fsendpt_type);
}

/* Got either the type of the next entry or the count of
@@ -520,8 +517,7 @@ static int afs_deliver_yfsvl_get_endpoints(struct afs_call *call)
if (!call->count)
goto end;
if (call->count > YFS_MAXENDPOINTS)
- return afs_protocol_error(call, -EBADMSG,
- afs_eproto_yvl_vlendpt_type);
+ return afs_protocol_error(call, afs_eproto_yvl_vlendpt_type);

afs_extract_to_buf(call, 1 * sizeof(__be32));
call->unmarshall = 3;
@@ -548,8 +544,7 @@ static int afs_deliver_yfsvl_get_endpoints(struct afs_call *call)
size = sizeof(__be32) * (1 + 4 + 1);
break;
default:
- return afs_protocol_error(call, -EBADMSG,
- afs_eproto_yvl_vlendpt_type);
+ return afs_protocol_error(call, afs_eproto_yvl_vlendpt_type);
}

if (call->count > 1)
@@ -567,19 +562,18 @@ static int afs_deliver_yfsvl_get_endpoints(struct afs_call *call)
switch (call->count2) {
case YFS_ENDPOINT_IPV4:
if (ntohl(bp[0]) != sizeof(__be32) * 2)
- return afs_protocol_error(call, -EBADMSG,
- afs_eproto_yvl_vlendpt4_len);
+ return afs_protocol_error(
+ call, afs_eproto_yvl_vlendpt4_len);
bp += 3;
break;
case YFS_ENDPOINT_IPV6:
if (ntohl(bp[0]) != sizeof(__be32) * 5)
- return afs_protocol_error(call, -EBADMSG,
- afs_eproto_yvl_vlendpt6_len);
+ return afs_protocol_error(
+ call, afs_eproto_yvl_vlendpt6_len);
bp += 6;
break;
default:
- return afs_protocol_error(call, -EBADMSG,
- afs_eproto_yvl_vlendpt_type);
+ return afs_protocol_error(call, afs_eproto_yvl_vlendpt_type);
}

/* Got either the type of the next entry or the count of
diff --git a/fs/afs/yfsclient.c b/fs/afs/yfsclient.c
index f118daa5f33a..bf74c679c02b 100644
--- a/fs/afs/yfsclient.c
+++ b/fs/afs/yfsclient.c
@@ -226,7 +226,7 @@ static void xdr_decode_YFSFetchStatus(const __be32 **_bp,

bad:
xdr_dump_bad(*_bp);
- afs_protocol_error(call, -EBADMSG, afs_eproto_bad_status);
+ afs_protocol_error(call, afs_eproto_bad_status);
goto advance;
}

@@ -1426,8 +1426,7 @@ static int yfs_deliver_fs_get_volume_status(struct afs_call *call)
call->count = ntohl(call->tmp);
_debug("volname length: %u", call->count);
if (call->count >= AFSNAMEMAX)
- return afs_protocol_error(call, -EBADMSG,
- afs_eproto_volname_len);
+ return afs_protocol_error(call, afs_eproto_volname_len);
size = (call->count + 3) & ~3; /* It's padded */
afs_extract_to_buf(call, size);
call->unmarshall++;
@@ -1456,8 +1455,7 @@ static int yfs_deliver_fs_get_volume_status(struct afs_call *call)
call->count = ntohl(call->tmp);
_debug("offline msg length: %u", call->count);
if (call->count >= AFSNAMEMAX)
- return afs_protocol_error(call, -EBADMSG,
- afs_eproto_offline_msg_len);
+ return afs_protocol_error(call, afs_eproto_offline_msg_len);
size = (call->count + 3) & ~3; /* It's padded */
afs_extract_to_buf(call, size);
call->unmarshall++;
@@ -1487,8 +1485,7 @@ static int yfs_deliver_fs_get_volume_status(struct afs_call *call)
call->count = ntohl(call->tmp);
_debug("motd length: %u", call->count);
if (call->count >= AFSNAMEMAX)
- return afs_protocol_error(call, -EBADMSG,
- afs_eproto_motd_len);
+ return afs_protocol_error(call, afs_eproto_motd_len);
size = (call->count + 3) & ~3; /* It's padded */
afs_extract_to_buf(call, size);
call->unmarshall++;
@@ -1797,8 +1794,7 @@ static int yfs_deliver_fs_inline_bulk_status(struct afs_call *call)
tmp = ntohl(call->tmp);
_debug("status count: %u/%u", tmp, call->count2);
if (tmp != call->count2)
- return afs_protocol_error(call, -EBADMSG,
- afs_eproto_ibulkst_count);
+ return afs_protocol_error(call, afs_eproto_ibulkst_count);

call->count = 0;
call->unmarshall++;
@@ -1835,8 +1831,7 @@ static int yfs_deliver_fs_inline_bulk_status(struct afs_call *call)
tmp = ntohl(call->tmp);
_debug("CB count: %u", tmp);
if (tmp != call->count2)
- return afs_protocol_error(call, -EBADMSG,
- afs_eproto_ibulkst_cb_count);
+ return afs_protocol_error(call, afs_eproto_ibulkst_cb_count);
call->count = 0;
call->unmarshall++;
more_cbs:
diff --git a/include/trace/events/afs.h b/include/trace/events/afs.h
index 19a07fbf35df..a6d8a9891164 100644
--- a/include/trace/events/afs.h
+++ b/include/trace/events/afs.h
@@ -994,24 +994,22 @@ TRACE_EVENT(afs_edit_dir,
);

TRACE_EVENT(afs_protocol_error,
- TP_PROTO(struct afs_call *call, int error, enum afs_eproto_cause cause),
+ TP_PROTO(struct afs_call *call, enum afs_eproto_cause cause),

- TP_ARGS(call, error, cause),
+ TP_ARGS(call, cause),

TP_STRUCT__entry(
__field(unsigned int, call )
- __field(int, error )
__field(enum afs_eproto_cause, cause )
),

TP_fast_assign(
__entry->call = call ? call->debug_id : 0;
- __entry->error = error;
__entry->cause = cause;
),

- TP_printk("c=%08x r=%d %s",
- __entry->call, __entry->error,
+ TP_printk("c=%08x %s",
+ __entry->call,
__print_symbolic(__entry->cause, afs_eproto_causes))
);

Next message: David Howells: "[PATCH 12/27] afs: Rename struct afs_fs_cursor to afs_operation"
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