[PATCH for-5.18 v1 1/3] io_uring: Rename `io_{send,recv}` to `io_{sendto,recvfrom}`

[Ammar Faizi <ammarfaizi2@gnuweeb.org>]

This is a preparation to add sendto() and recvfrom() support for
io_uring.
_____________________________________________________
The following call

    send(sockfd, buf, len, flags);

is equivalent to

    sendto(sockfd, buf, len, flags, NULL, 0);
_____________________________________________________
The following call

    recv(sockfd, buf, len, flags);

is equivalent to

    recvfrom(sockfd, buf, len, flags, NULL, NULL);
_____________________________________________________

Currently, io_uring supports send() and recv() operation. Now, we are
going to add sendto() and recvfrom() support. Since the latter is the
superset of the former, change the function name to the latter.

This renames:
  - io_send() to io_sendto()
  - io_recv() to io_recvfrom()

Cc: Nugra <richiisei@gmail.com>
Cc: Alviro Iskandar Setiawan <alviro.iskandar@gmail.com>
Signed-off-by: Ammar Faizi <ammarfaizi2@gnuweeb.org>
---
v1:
  - Rebase the work (sync with "io_uring-5.17" branch in Jens' tree).
  - Reword the commit message.
  - Add Alviro Iskandar Setiawan to CC list (tester).

RFC v4:
  - Rebase the work (sync with "for-next" branch in Jens' tree).

RFC v3:
  - Fix build error when CONFIG_NET is undefined for PATCH 1/3. I
    tried to fix it in PATCH 3/3, but it should be fixed in PATCH 1/3,
    otherwise it breaks the build in PATCH 1/3.

RFC v2:
  - Add Nugra to CC list (tester).

---
---
 fs/io_uring.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/fs/io_uring.c b/fs/io_uring.c
index 2e04f718319d..742e252a052a 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -4961,7 +4961,7 @@ static int io_sendmsg(struct io_kiocb *req, unsigned int issue_flags)
 	return 0;
 }
 
-static int io_send(struct io_kiocb *req, unsigned int issue_flags)
+static int io_sendto(struct io_kiocb *req, unsigned int issue_flags)
 {
 	struct io_sr_msg *sr = &req->sr_msg;
 	struct msghdr msg;
@@ -5187,7 +5187,7 @@ static int io_recvmsg(struct io_kiocb *req, unsigned int issue_flags)
 	return 0;
 }
 
-static int io_recv(struct io_kiocb *req, unsigned int issue_flags)
+static int io_recvfrom(struct io_kiocb *req, unsigned int issue_flags)
 {
 	struct io_buffer *kbuf;
 	struct io_sr_msg *sr = &req->sr_msg;
@@ -5395,8 +5395,8 @@ IO_NETOP_PREP_ASYNC(sendmsg);
 IO_NETOP_PREP_ASYNC(recvmsg);
 IO_NETOP_PREP_ASYNC(connect);
 IO_NETOP_PREP(accept);
-IO_NETOP_FN(send);
-IO_NETOP_FN(recv);
+IO_NETOP_FN(sendto);
+IO_NETOP_FN(recvfrom);
 #endif /* CONFIG_NET */
 
 struct io_poll_table {
@@ -6771,13 +6771,13 @@ static int io_issue_sqe(struct io_kiocb *req, unsigned int issue_flags)
 		ret = io_sendmsg(req, issue_flags);
 		break;
 	case IORING_OP_SEND:
-		ret = io_send(req, issue_flags);
+		ret = io_sendto(req, issue_flags);
 		break;
 	case IORING_OP_RECVMSG:
 		ret = io_recvmsg(req, issue_flags);
 		break;
 	case IORING_OP_RECV:
-		ret = io_recv(req, issue_flags);
+		ret = io_recvfrom(req, issue_flags);
 		break;
 	case IORING_OP_TIMEOUT:
 		ret = io_timeout(req, issue_flags);
-- 
2.32.0