[RFC PATCH v3 1/3] io_uring: Rename `io_{send,recv}` to `io_{sendto,recvfrom}`

From: Ammar Faizi <ammarfaizi2@gmail.com>
To: Jens Axboe <axboe@kernel.dk>
Cc: io-uring Mailing List <io-uring@vger.kernel.org>,
	Pavel Begunkov <asml.silence@gmail.com>,
	"David S . Miller" <davem@davemloft.net>,
	Jakub Kicinski <kuba@kernel.org>,
	netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
	Ammar Faizi <ammarfaizi2@gmail.com>, Nugra <richiisei@gmail.com>
Subject: [RFC PATCH v3 1/3] io_uring: Rename `io_{send,recv}` to `io_{sendto,recvfrom}`
Date: Fri, 31 Dec 2021 00:52:30 +0700	[thread overview]
Message-ID: <20211230173126.174350-2-ammar.faizi@intel.com> (raw)
In-Reply-To: <20211230173126.174350-1-ammar.faizi@intel.com>

Currently we can perform `send` and `recv` via io_uring. And now, we
are going to add `sendto` and `recvfrom` support for io_uring.

Note that:
  Calling `send(fd, buf, len, flags)` is equivalent to calling
  `sendto(fd, buf, len, flags, NULL, 0)`. Therefore, `sendto`
  is a superset of `send`.

  Calling `recv(fd, buf, len, flags)` is equivalent to calling
  `recvfrom(fd, buf, len, flags, NULL, NULL)`. Therefore, `recvfrom`
  is a superset of `recv`.

As such, let's direct the current supported `IORING_OP_{SEND,RECV}` to
`io_{sendto,recvfrom}`. These functions will also be used for
`IORING_OP_{SENDTO,RECVFROM}` operation in the next patches.

Cc: Nugra <richiisei@gmail.com>
Signed-off-by: Ammar Faizi <ammarfaizi2@gmail.com>
---

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.

v2:
  - Added 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 90002bb3fdf4..7adcb591398f 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -5273,7 +5273,7 @@ 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;
@@ -5499,7 +5499,7 @@ 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;
@@ -5707,8 +5707,8 @@ 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 {
@@ -7061,13 +7061,13 @@ 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

