From: Felix Fietkau <nbd@nbd.name>
Date: Tue, 16 Apr 2019 09:00:49 +0000 (+0200)
Subject: libubus: attempt to receive data before calling poll
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=76ea27a627742c8a6c40261287d322b7656cc43d;p=oweals%2Fubus.git

libubus: attempt to receive data before calling poll

Data is often already present here

Signed-off-by: Felix Fietkau <nbd@nbd.name>
---

diff --git a/libubus-io.c b/libubus-io.c
index 887e88c..228af5c 100644
--- a/libubus-io.c
+++ b/libubus-io.c
@@ -174,9 +174,6 @@ static int recv_retry(struct ubus_context *ctx, struct iovec *iov, bool wait, in
 	};
 
 	while (iov->iov_len > 0) {
-		if (wait)
-			wait_data(fd, false);
-
 		if (recv_fd) {
 			msghdr.msg_control = &fd_buf;
 			msghdr.msg_controllen = sizeof(fd_buf);
@@ -210,6 +207,9 @@ static int recv_retry(struct ubus_context *ctx, struct iovec *iov, bool wait, in
 		iov->iov_len -= bytes;
 		iov->iov_base += bytes;
 		total += bytes;
+
+		if (iov->iov_len > 0)
+			wait_data(fd, false);
 	}
 
 	return total;