From: David Gibson <david@gibson.dropbear.id.au>
To: passt-dev@passt.top, Stefano Brivio <sbrivio@redhat.com>
Cc: David Gibson <david@gibson.dropbear.id.au>
Subject: [PATCH 3/4] tcp: Remove 'recvmsg' goto from tcp_data_from_sock
Date: Fri, 27 Jan 2023 16:11:09 +1100 [thread overview]
Message-ID: <20230127051110.2513363-4-david@gibson.dropbear.id.au> (raw)
In-Reply-To: <20230127051110.2513363-1-david@gibson.dropbear.id.au>
This goto can be handled just as simply and more clearly with a do while.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
---
tcp.c | 11 +++++------
1 file changed, 5 insertions(+), 6 deletions(-)
diff --git a/tcp.c b/tcp.c
index f0085e3..f7228d1 100644
--- a/tcp.c
+++ b/tcp.c
@@ -2158,13 +2158,12 @@ static int tcp_data_from_sock(struct ctx *c, struct tcp_tap_conn *conn)
iov_sock[fill_bufs].iov_len = iov_rem;
/* Receive into buffers, don't dequeue until acknowledged by guest. */
-recvmsg:
- len = recvmsg(s, &mh_sock, MSG_PEEK);
- if (len < 0) {
- if (errno == EINTR)
- goto recvmsg;
+ do {
+ len = recvmsg(s, &mh_sock, MSG_PEEK);
+ } while (len < 0 && errno == EINTR);
+
+ if (len < 0)
goto err;
- }
if (!len)
goto zero_len;
--
@@ -2158,13 +2158,12 @@ static int tcp_data_from_sock(struct ctx *c, struct tcp_tap_conn *conn)
iov_sock[fill_bufs].iov_len = iov_rem;
/* Receive into buffers, don't dequeue until acknowledged by guest. */
-recvmsg:
- len = recvmsg(s, &mh_sock, MSG_PEEK);
- if (len < 0) {
- if (errno == EINTR)
- goto recvmsg;
+ do {
+ len = recvmsg(s, &mh_sock, MSG_PEEK);
+ } while (len < 0 && errno == EINTR);
+
+ if (len < 0)
goto err;
- }
if (!len)
goto zero_len;
--
2.39.1
next prev parent reply other threads:[~2023-01-27 5:11 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-27 5:11 [PATCH 0/4] RFC: Some cleanups to tap and tcp David Gibson
2023-01-27 5:11 ` [PATCH 1/4] tap: Don't pcap frames that didn't get sent David Gibson
2023-02-15 12:17 ` Stefano Brivio
2023-02-16 5:20 ` David Gibson
2023-02-16 7:43 ` Stefano Brivio
2023-01-27 5:11 ` [PATCH 2/4] tap: Eliminate goto from tap_handler() David Gibson
2023-01-27 5:11 ` David Gibson [this message]
2023-02-15 12:17 ` [PATCH 3/4] tcp: Remove 'recvmsg' goto from tcp_data_from_sock Stefano Brivio
2023-02-16 0:28 ` David Gibson
2023-01-27 5:11 ` [PATCH 4/4] tcp: Remove 'zero_len' " David Gibson
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