From: Chuck Lever <chuck.lever@oracle.com>
To: linux-nfs@vger.kernel.org
Subject: [PATCH v1 07/42] NFSD: Update the NFSv3 READ3res encode to use struct xdr_stream
Date: Mon, 01 Mar 2021 10:16:00 -0500 [thread overview]
Message-ID: <161461176064.8508.7770286583856276750.stgit@klimt.1015granger.net> (raw)
In-Reply-To: <161461145466.8508.13379815439337754427.stgit@klimt.1015granger.net>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
---
fs/nfsd/nfs3proc.c | 1 +
fs/nfsd/nfs3xdr.c | 43 +++++++++++++++++++++++--------------------
fs/nfsd/xdr3.h | 1 +
include/linux/sunrpc/xdr.h | 20 ++++++++++++++++++++
4 files changed, 45 insertions(+), 20 deletions(-)
diff --git a/fs/nfsd/nfs3proc.c b/fs/nfsd/nfs3proc.c
index e55a1d14ede2..93d196752f87 100644
--- a/fs/nfsd/nfs3proc.c
+++ b/fs/nfsd/nfs3proc.c
@@ -159,6 +159,7 @@ nfsd3_proc_read(struct svc_rqst *rqstp)
v = 0;
len = argp->count;
+ resp->pages = rqstp->rq_next_page;
while (len > 0) {
struct page *page = *(rqstp->rq_next_page++);
diff --git a/fs/nfsd/nfs3xdr.c b/fs/nfsd/nfs3xdr.c
index 352691c3e246..859cc6c51c1a 100644
--- a/fs/nfsd/nfs3xdr.c
+++ b/fs/nfsd/nfs3xdr.c
@@ -1005,30 +1005,33 @@ nfs3svc_encode_readlinkres(struct svc_rqst *rqstp, __be32 *p)
int
nfs3svc_encode_readres(struct svc_rqst *rqstp, __be32 *p)
{
+ struct xdr_stream *xdr = &rqstp->rq_res_stream;
struct nfsd3_readres *resp = rqstp->rq_resp;
struct kvec *head = rqstp->rq_res.head;
- *p++ = resp->status;
- p = encode_post_op_attr(rqstp, p, &resp->fh);
- if (resp->status == 0) {
- *p++ = htonl(resp->count);
- *p++ = htonl(resp->eof);
- *p++ = htonl(resp->count); /* xdr opaque count */
- xdr_ressize_check(rqstp, p);
- /* now update rqstp->rq_res to reflect data as well */
- rqstp->rq_res.page_len = resp->count;
- if (resp->count & 3) {
- /* need to pad the tail */
- rqstp->rq_res.tail[0].iov_base = p;
- *p = 0;
- rqstp->rq_res.tail[0].iov_len = 4 - (resp->count & 3);
- }
- if (svc_encode_result_payload(rqstp, head->iov_len,
- resp->count))
+ if (!svcxdr_encode_nfsstat3(xdr, resp->status))
+ return 0;
+ switch (resp->status) {
+ case nfs_ok:
+ if (!svcxdr_encode_post_op_attr(rqstp, xdr, &resp->fh))
return 0;
- return 1;
- } else
- return xdr_ressize_check(rqstp, p);
+ if (xdr_stream_encode_u32(xdr, resp->count) < 0)
+ return 0;
+ if (xdr_stream_encode_bool(xdr, resp->eof) < 0)
+ return 0;
+ if (xdr_stream_encode_u32(xdr, resp->count) < 0)
+ return 0;
+ xdr_write_pages(xdr, resp->pages, rqstp->rq_res.page_base,
+ resp->count);
+ if (svc_encode_result_payload(rqstp, head->iov_len, resp->count) < 0)
+ return 0;
+ break;
+ default:
+ if (!svcxdr_encode_post_op_attr(rqstp, xdr, &resp->fh))
+ return 0;
+ }
+
+ return 1;
}
/* WRITE */
diff --git a/fs/nfsd/xdr3.h b/fs/nfsd/xdr3.h
index 1d633c5d5fa2..8073350418ae 100644
--- a/fs/nfsd/xdr3.h
+++ b/fs/nfsd/xdr3.h
@@ -145,6 +145,7 @@ struct nfsd3_readres {
struct svc_fh fh;
unsigned long count;
__u32 eof;
+ struct page **pages;
};
struct nfsd3_writeres {
diff --git a/include/linux/sunrpc/xdr.h b/include/linux/sunrpc/xdr.h
index 2bc75c167f00..9dda7171b7b4 100644
--- a/include/linux/sunrpc/xdr.h
+++ b/include/linux/sunrpc/xdr.h
@@ -394,6 +394,26 @@ static inline int xdr_stream_encode_item_absent(struct xdr_stream *xdr)
return len;
}
+/**
+ * xdr_stream_encode_bool - Encode a "not present" list item
+ * @xdr: pointer to xdr_stream
+ * @n: boolean value to encode
+ *
+ * Return values:
+ * On success, returns length in bytes of XDR buffer consumed
+ * %-EMSGSIZE on XDR buffer overflow
+ */
+static inline int xdr_stream_encode_bool(struct xdr_stream *xdr, __u32 n)
+{
+ const size_t len = XDR_UNIT;
+ __be32 *p = xdr_reserve_space(xdr, len);
+
+ if (unlikely(!p))
+ return -EMSGSIZE;
+ *p = n ? xdr_one : xdr_zero;
+ return len;
+}
+
/**
* xdr_stream_encode_u32 - Encode a 32-bit integer
* @xdr: pointer to xdr_stream
next prev parent reply other threads:[~2021-03-01 15:17 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-01 15:15 [PATCH v1 00/42] NFSv2/3 XDR encoder overhaul Chuck Lever
2021-03-01 15:15 ` [PATCH v1 01/42] NFSD: Extract the svcxdr_init_encode() helper Chuck Lever
2021-03-02 16:47 ` J. Bruce Fields
2021-03-02 16:57 ` Chuck Lever
2021-03-01 15:15 ` [PATCH v1 02/42] NFSD: Update the GETATTR3res encoder to use struct xdr_stream Chuck Lever
2021-03-01 15:15 ` [PATCH v1 03/42] NFSD: Update the NFSv3 ACCESS3res " Chuck Lever
2021-03-01 15:15 ` [PATCH v1 04/42] NFSD: Update the NFSv3 LOOKUP3res " Chuck Lever
2021-03-01 15:15 ` [PATCH v1 05/42] NFSD: Update the NFSv3 wccstat result " Chuck Lever
2021-03-01 15:15 ` [PATCH v1 06/42] NFSD: Update the NFSv3 READLINK3res " Chuck Lever
2021-03-01 15:16 ` Chuck Lever [this message]
2021-03-01 15:16 ` [PATCH v1 08/42] NFSD: Update the NFSv3 WRITE3res " Chuck Lever
2021-03-01 15:16 ` [PATCH v1 09/42] NFSD: Update the NFSv3 CREATE family of encoders " Chuck Lever
2021-03-01 15:16 ` [PATCH v1 10/42] NFSD: Update the NFSv3 RENAMEv3res encoder " Chuck Lever
2021-03-01 15:16 ` [PATCH v1 11/42] NFSD: Update the NFSv3 LINK3res " Chuck Lever
2021-03-01 15:16 ` [PATCH v1 12/42] NFSD: Update the NFSv3 FSSTAT3res " Chuck Lever
2021-03-02 20:45 ` J. Bruce Fields
2021-03-02 20:57 ` Chuck Lever
2021-03-01 15:16 ` [PATCH v1 13/42] NFSD: Update the NFSv3 FSINFO3res " Chuck Lever
2021-03-01 15:16 ` [PATCH v1 14/42] NFSD: Update the NFSv3 PATHCONF3res " Chuck Lever
2021-03-03 7:13 ` Christoph Hellwig
2021-03-03 15:34 ` Chuck Lever
2021-03-01 15:16 ` [PATCH v1 15/42] NFSD: Update the NFSv3 COMMIT3res " Chuck Lever
2021-03-01 15:16 ` [PATCH v1 16/42] NFSD: Add a helper that encodes NFSv3 directory offset cookies Chuck Lever
2021-03-01 15:17 ` [PATCH v1 17/42] NFSD: Count bytes instead of pages in the NFSv3 READDIR encoder Chuck Lever
2021-03-01 15:17 ` [PATCH v1 18/42] NFSD: Update the NFSv3 READDIR3res encoder to use struct xdr_stream Chuck Lever
2021-03-01 15:17 ` [PATCH v1 19/42] SUNRPC: Fix xdr_get_next_encode_buffer() page boundary handling Chuck Lever
2021-03-02 22:11 ` J. Bruce Fields
2021-03-03 15:43 ` Chuck Lever
2021-03-03 16:52 ` Bruce Fields
2021-03-03 18:19 ` Chuck Lever
2021-03-03 18:25 ` Bruce Fields
2021-03-03 18:27 ` Chuck Lever
2021-03-03 18:30 ` Chuck Lever
2021-03-03 18:38 ` Bruce Fields
2021-03-03 18:42 ` Chuck Lever
2021-03-01 15:17 ` [PATCH v1 20/42] NFSD: Update NFSv3 READDIR entry encoders to use struct xdr_stream Chuck Lever
2021-03-01 15:17 ` [PATCH v1 21/42] NFSD: Remove unused NFSv3 directory entry encoders Chuck Lever
2021-03-01 15:17 ` [PATCH v1 22/42] NFSD: Reduce svc_rqst::rq_pages churn during READDIR operations Chuck Lever
2021-03-01 15:17 ` [PATCH v1 23/42] NFSD: Update the NFSv2 stat encoder to use struct xdr_stream Chuck Lever
2021-03-01 15:17 ` [PATCH v1 24/42] NFSD: Update the NFSv2 attrstat " Chuck Lever
2021-03-01 15:17 ` [PATCH v1 25/42] NFSD: Update the NFSv2 diropres " Chuck Lever
2021-03-01 15:17 ` [PATCH v1 26/42] NFSD: Update the NFSv2 READLINK result " Chuck Lever
2021-03-01 15:18 ` [PATCH v1 27/42] NFSD: Update the NFSv2 READ " Chuck Lever
2021-03-01 15:18 ` [PATCH v1 28/42] NFSD: Update the NFSv2 STATFS " Chuck Lever
2021-03-01 15:18 ` [PATCH v1 29/42] NFSD: Add a helper that encodes NFSv3 directory offset cookies Chuck Lever
2021-03-01 15:18 ` [PATCH v1 30/42] NFSD: Count bytes instead of pages in the NFSv2 READDIR encoder Chuck Lever
2021-03-01 15:18 ` [PATCH v1 31/42] NFSD: Update the NFSv2 READDIR result encoder to use struct xdr_stream Chuck Lever
2021-03-01 15:18 ` [PATCH v1 32/42] NFSD: Update the NFSv2 READDIR entry " Chuck Lever
2021-03-01 15:18 ` [PATCH v1 33/42] NFSD: Remove unused NFSv2 directory entry encoders Chuck Lever
2021-03-01 15:18 ` [PATCH v1 34/42] NFSD: Add an xdr_stream-based encoder for NFSv2/3 ACLs Chuck Lever
2021-03-01 15:18 ` [PATCH v1 35/42] NFSD: Update the NFSv2 GETACL result encoder to use struct xdr_stream Chuck Lever
2021-03-01 15:18 ` [PATCH v1 36/42] NFSD: Update the NFSv2 SETACL " Chuck Lever
2021-03-01 15:19 ` [PATCH v1 37/42] NFSD: Update the NFSv2 ACL GETATTR " Chuck Lever
2021-03-01 15:19 ` [PATCH v1 38/42] NFSD: Update the NFSv2 ACL ACCESS " Chuck Lever
2021-03-01 15:19 ` [PATCH v1 39/42] NFSD: Clean up after updating NFSv2 ACL encoders Chuck Lever
2021-03-01 15:19 ` [PATCH v1 40/42] NFSD: Update the NFSv3 GETACL result encoder to use struct xdr_stream Chuck Lever
2021-03-01 15:19 ` [PATCH v1 41/42] NFSD: Update the NFSv3 SETACL " Chuck Lever
2021-03-01 15:19 ` [PATCH v1 42/42] NFSD: Clean up after updating NFSv3 ACL encoders Chuck Lever
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