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Message-ID: <20240509180627.204155-3-axboe@kernel.dk>
Date: Thu, 9 May 2024 12:00:27 -0600
From: Jens Axboe <axboe@...nel.dk>
To: io-uring@...r.kernel.org,
netdev@...r.kernel.org
Cc: kuba@...nel.org,
Jens Axboe <axboe@...nel.dk>
Subject: [PATCH 2/4] net: have do_accept() take a struct proto_accept_arg argument
In preparation for passing in more information via this API, change
do_accept() to take a proto_accept_arg struct pointer rather than just
the file flags separately.
No functional changes in this patch.
Signed-off-by: Jens Axboe <axboe@...nel.dk>
---
include/linux/socket.h | 3 ++-
io_uring/net.c | 6 ++++--
net/socket.c | 12 +++++-------
3 files changed, 11 insertions(+), 10 deletions(-)
diff --git a/include/linux/socket.h b/include/linux/socket.h
index 139c330ccf2c..89d16b90370b 100644
--- a/include/linux/socket.h
+++ b/include/linux/socket.h
@@ -16,6 +16,7 @@ struct cred;
struct socket;
struct sock;
struct sk_buff;
+struct proto_accept_arg;
#define __sockaddr_check_size(size) \
BUILD_BUG_ON(((size) > sizeof(struct __kernel_sockaddr_storage)))
@@ -433,7 +434,7 @@ extern int __sys_recvfrom(int fd, void __user *ubuf, size_t size,
extern int __sys_sendto(int fd, void __user *buff, size_t len,
unsigned int flags, struct sockaddr __user *addr,
int addr_len);
-extern struct file *do_accept(struct file *file, unsigned file_flags,
+extern struct file *do_accept(struct file *file, struct proto_accept_arg *arg,
struct sockaddr __user *upeer_sockaddr,
int __user *upeer_addrlen, int flags);
extern int __sys_accept4(int fd, struct sockaddr __user *upeer_sockaddr,
diff --git a/io_uring/net.c b/io_uring/net.c
index 070dea9a4eda..d4d1fc93635c 100644
--- a/io_uring/net.c
+++ b/io_uring/net.c
@@ -1528,8 +1528,10 @@ int io_accept(struct io_kiocb *req, unsigned int issue_flags)
{
struct io_accept *accept = io_kiocb_to_cmd(req, struct io_accept);
bool force_nonblock = issue_flags & IO_URING_F_NONBLOCK;
- unsigned int file_flags = force_nonblock ? O_NONBLOCK : 0;
bool fixed = !!accept->file_slot;
+ struct proto_accept_arg arg = {
+ .flags = force_nonblock ? O_NONBLOCK : 0,
+ };
struct file *file;
int ret, fd;
@@ -1543,7 +1545,7 @@ int io_accept(struct io_kiocb *req, unsigned int issue_flags)
if (unlikely(fd < 0))
return fd;
}
- file = do_accept(req->file, file_flags, accept->addr, accept->addr_len,
+ file = do_accept(req->file, &arg, accept->addr, accept->addr_len,
accept->flags);
if (IS_ERR(file)) {
if (!fixed)
diff --git a/net/socket.c b/net/socket.c
index 6ff5f21d9633..e416920e9399 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -1890,7 +1890,7 @@ SYSCALL_DEFINE2(listen, int, fd, int, backlog)
return __sys_listen(fd, backlog);
}
-struct file *do_accept(struct file *file, unsigned file_flags,
+struct file *do_accept(struct file *file, struct proto_accept_arg *arg,
struct sockaddr __user *upeer_sockaddr,
int __user *upeer_addrlen, int flags)
{
@@ -1898,9 +1898,6 @@ struct file *do_accept(struct file *file, unsigned file_flags,
struct file *newfile;
int err, len;
struct sockaddr_storage address;
- struct proto_accept_arg arg = {
- .flags = file_flags,
- };
const struct proto_ops *ops;
sock = sock_from_file(file);
@@ -1929,8 +1926,8 @@ struct file *do_accept(struct file *file, unsigned file_flags,
if (err)
goto out_fd;
- arg.flags |= sock->file->f_flags;
- err = ops->accept(sock, newsock, &arg);
+ arg->flags |= sock->file->f_flags;
+ err = ops->accept(sock, newsock, arg);
if (err < 0)
goto out_fd;
@@ -1956,6 +1953,7 @@ struct file *do_accept(struct file *file, unsigned file_flags,
static int __sys_accept4_file(struct file *file, struct sockaddr __user *upeer_sockaddr,
int __user *upeer_addrlen, int flags)
{
+ struct proto_accept_arg arg = { };
struct file *newfile;
int newfd;
@@ -1969,7 +1967,7 @@ static int __sys_accept4_file(struct file *file, struct sockaddr __user *upeer_s
if (unlikely(newfd < 0))
return newfd;
- newfile = do_accept(file, 0, upeer_sockaddr, upeer_addrlen,
+ newfile = do_accept(file, &arg, upeer_sockaddr, upeer_addrlen,
flags);
if (IS_ERR(newfile)) {
put_unused_fd(newfd);
--
2.43.0
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