Commit 0345f931 authored by tadeusz.struk@intel.com's avatar tadeusz.struk@intel.com Committed by David S. Miller
Browse files

net: socket: add support for async operations 



Add support for async operations.

Signed-off-by: default avatarTadeusz Struk <tadeusz.struk@intel.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 8f2ddaac

include/linux/socket.h

+1 −0
Original line number Diff line number Diff line
@@ -51,6 +51,7 @@ struct msghdr { 
	void		*msg_control;	/* ancillary data */

	__kernel_size_t	msg_controllen;	/* ancillary data buffer length */

	unsigned int	msg_flags;	/* flags on received message */

	struct kiocb	*msg_iocb;	/* ptr to iocb for async requests */

};

 

struct user_msghdr {

net/compat.c

+2 −0
Original line number Diff line number Diff line
@@ -79,6 +79,8 @@ ssize_t get_compat_msghdr(struct msghdr *kmsg, 
	if (nr_segs > UIO_MAXIOV)

		return -EMSGSIZE;



	kmsg->msg_iocb = NULL;



	err = compat_rw_copy_check_uvector(save_addr ? READ : WRITE,

					   compat_ptr(uiov), nr_segs,

					   UIO_FASTIOV, *iov, iov);

net/socket.c

+6 −2
Original line number Diff line number Diff line
@@ -798,7 +798,8 @@ static ssize_t sock_read_iter(struct kiocb *iocb, struct iov_iter *to) 
{

	struct file *file = iocb->ki_filp;

	struct socket *sock = file->private_data;

	struct msghdr msg = {.msg_iter = *to};

	struct msghdr msg = {.msg_iter = *to,

			     .msg_iocb = iocb};

	ssize_t res;



	if (file->f_flags & O_NONBLOCK)
@@ -819,7 +820,8 @@ static ssize_t sock_write_iter(struct kiocb *iocb, struct iov_iter *from) 
{

	struct file *file = iocb->ki_filp;

	struct socket *sock = file->private_data;

	struct msghdr msg = {.msg_iter = *from};

	struct msghdr msg = {.msg_iter = *from,

			     .msg_iocb = iocb};

	ssize_t res;



	if (iocb->ki_pos != 0)
@@ -1894,6 +1896,8 @@ static ssize_t copy_msghdr_from_user(struct msghdr *kmsg, 
	if (nr_segs > UIO_MAXIOV)

		return -EMSGSIZE;



	kmsg->msg_iocb = NULL;



	err = rw_copy_check_uvector(save_addr ? READ : WRITE,

				    uiov, nr_segs,

				    UIO_FASTIOV, *iov, iov);