libubus: fix msgbuf reduction logic during receive

Signed-off-by: Alexandru Ardelean <aa@ocedo.com>
Signed-off-by: Felix Fietkau <nbd@openwrt.org>

diff --git a/libubus-io.c b/libubus-io.c
index 3280e41..ba22dcb 100644 (file)
--- a/libubus-io.c
+++ b/libubus-io.c
@@ -254,15 +254,11 @@ static bool get_next_msg(struct ubus_context *ctx, int *recv_fd)
                return false;
 
        len = blob_raw_len(&hdrbuf.data);
-       if (len > ctx->msgbuf_data_len) {
+       if (len > ctx->msgbuf_data_len)
                ctx->msgbuf_reduction_counter = UBUS_MSGBUF_REDUCTION_INTERVAL;
-       } else if (ctx->msgbuf_data_len > UBUS_MSG_CHUNK_SIZE) {
-               if (ctx->msgbuf_reduction_counter > 0) {
-                       len = -1;
-                       --ctx->msgbuf_reduction_counter;
-               } else
-                       len = UBUS_MSG_CHUNK_SIZE;
-       } else
+       else if (ctx->msgbuf_reduction_counter > 0 && len < UBUS_MSG_CHUNK_SIZE)
+               len = !--ctx->msgbuf_reduction_counter ? UBUS_MSG_CHUNK_SIZE : -1;
+       else
                len = -1;
 
        if (len > -1) {