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sock: Remove ->sendpage*() in favour of sendmsg(MSG_SPLICE_PAGES)

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Remove ->sendpage() and ->sendpage_locked().  sendmsg() with
MSG_SPLICE_PAGES should be used instead.  This allows multiple pages and
multipage folios to be passed through.

Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Marc Kleine-Budde <mkl@pengutronix.de> # for net/can
cc: Jens Axboe <axboe@kernel.dk>
cc: Matthew Wilcox <willy@infradead.org>
cc: linux-afs@lists.infradead.org
cc: mptcp@lists.linux.dev
cc: rds-devel@oss.oracle.com
cc: tipc-discussion@lists.sourceforge.net
cc: virtualization@lists.linux-foundation.org
Link: https://lore.kernel.org/r/20230623225513.2732256-16-dhowells@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
David Howells
2023-06-23 23:55:12 +01:00
committed by Jakub Kicinski
parent e52828cc01
commit dc97391e66
66 changed files with 20 additions and 442 deletions
Download Patch File Download Diff File Expand all files Collapse all files

28
crypto/af_alg.c
View File

@@ -482,7 +482,6 @@ static const struct proto_ops alg_proto_ops = {
.listen = sock_no_listen,
.shutdown = sock_no_shutdown,
.mmap = sock_no_mmap,
.sendpage = sock_no_sendpage,
.sendmsg = sock_no_sendmsg,
.recvmsg = sock_no_recvmsg,
@@ -1106,33 +1105,6 @@ unlock:
}
EXPORT_SYMBOL_GPL(af_alg_sendmsg);
/**
* af_alg_sendpage - sendpage system call handler
* @sock: socket of connection to user space to write to
* @page: data to send
* @offset: offset into page to begin sending
* @size: length of data
* @flags: message send/receive flags
*
* This is a generic implementation of sendpage to fill ctx->tsgl_list.
*/
ssize_t af_alg_sendpage(struct socket *sock, struct page *page,
int offset, size_t size, int flags)
{
struct bio_vec bvec;
struct msghdr msg = {
.msg_flags = flags | MSG_SPLICE_PAGES,
};
if (flags & MSG_SENDPAGE_NOTLAST)
msg.msg_flags |= MSG_MORE;
bvec_set_page(&bvec, page, size, offset);
iov_iter_bvec(&msg.msg_iter, ITER_SOURCE, &bvec, 1, size);
return sock_sendmsg(sock, &msg);
}
EXPORT_SYMBOL_GPL(af_alg_sendpage);
/**
* af_alg_free_resources - release resources required for crypto request
* @areq: Request holding the TX and RX SGL

22
crypto/algif_aead.c
View File

@@ -9,10 +9,10 @@
* The following concept of the memory management is used:
*
* The kernel maintains two SGLs, the TX SGL and the RX SGL. The TX SGL is
* filled by user space with the data submitted via sendpage. Filling up
* the TX SGL does not cause a crypto operation -- the data will only be
* tracked by the kernel. Upon receipt of one recvmsg call, the caller must
* provide a buffer which is tracked with the RX SGL.
* filled by user space with the data submitted via sendmsg (maybe with
* MSG_SPLICE_PAGES). Filling up the TX SGL does not cause a crypto operation
* -- the data will only be tracked by the kernel. Upon receipt of one recvmsg
* call, the caller must provide a buffer which is tracked with the RX SGL.
*
* During the processing of the recvmsg operation, the cipher request is
* allocated and prepared. As part of the recvmsg operation, the processed
@@ -370,7 +370,6 @@ static struct proto_ops algif_aead_ops = {
.release = af_alg_release,
.sendmsg = aead_sendmsg,
.sendpage = af_alg_sendpage,
.recvmsg = aead_recvmsg,
.poll = af_alg_poll,
};
@@ -422,18 +421,6 @@ static int aead_sendmsg_nokey(struct socket *sock, struct msghdr *msg,
return aead_sendmsg(sock, msg, size);
}
static ssize_t aead_sendpage_nokey(struct socket *sock, struct page *page,
int offset, size_t size, int flags)
{
int err;
err = aead_check_key(sock);
if (err)
return err;
return af_alg_sendpage(sock, page, offset, size, flags);
}
static int aead_recvmsg_nokey(struct socket *sock, struct msghdr *msg,
size_t ignored, int flags)
{
@@ -461,7 +448,6 @@ static struct proto_ops algif_aead_ops_nokey = {
.release = af_alg_release,
.sendmsg = aead_sendmsg_nokey,
.sendpage = aead_sendpage_nokey,
.recvmsg = aead_recvmsg_nokey,
.poll = af_alg_poll,
};

2
crypto/algif_rng.c
View File

@@ -174,7 +174,6 @@ static struct proto_ops algif_rng_ops = {
.bind = sock_no_bind,
.accept = sock_no_accept,
.sendmsg = sock_no_sendmsg,
.sendpage = sock_no_sendpage,
.release = af_alg_release,
.recvmsg = rng_recvmsg,
@@ -192,7 +191,6 @@ static struct proto_ops __maybe_unused algif_rng_test_ops = {
.mmap = sock_no_mmap,
.bind = sock_no_bind,
.accept = sock_no_accept,
.sendpage = sock_no_sendpage,
.release = af_alg_release,
.recvmsg = rng_test_recvmsg,

14
crypto/algif_skcipher.c
View File

@@ -194,7 +194,6 @@ static struct proto_ops algif_skcipher_ops = {
.release = af_alg_release,
.sendmsg = skcipher_sendmsg,
.sendpage = af_alg_sendpage,
.recvmsg = skcipher_recvmsg,
.poll = af_alg_poll,
};
@@ -246,18 +245,6 @@ static int skcipher_sendmsg_nokey(struct socket *sock, struct msghdr *msg,
return skcipher_sendmsg(sock, msg, size);
}
static ssize_t skcipher_sendpage_nokey(struct socket *sock, struct page *page,
int offset, size_t size, int flags)
{
int err;
err = skcipher_check_key(sock);
if (err)
return err;
return af_alg_sendpage(sock, page, offset, size, flags);
}
static int skcipher_recvmsg_nokey(struct socket *sock, struct msghdr *msg,
size_t ignored, int flags)
{
@@ -285,7 +272,6 @@ static struct proto_ops algif_skcipher_ops_nokey = {
.release = af_alg_release,
.sendmsg = skcipher_sendmsg_nokey,
.sendpage = skcipher_sendpage_nokey,
.recvmsg = skcipher_recvmsg_nokey,
.poll = af_alg_poll,
};