net: tcp: Set the right th_win value in tester_prepare_tcp_pkt

shrek-wang · danieldegrasse · commit 6527a1b23ce4 · 2025-06-30T15:16:02.000-05:00
The 16bit th_win in the TCP header was not set via htons(). It
will bring issues of wrong th_win value in the peer end. For
example, the 1280 (0x0500) TCP window size would be taken as
5 (0x0005) by the peer end.

Signed-off-by: Shrek Wang &lt;inet_eman@outlook.com&gt;
diff --git a/tests/net/tcp/src/main.c b/tests/net/tcp/src/main.c
@@ -293,7 +293,7 @@ static struct net_pkt *tester_prepare_tcp_pkt(sa_family_t af,
 	}
 
 	th->th_flags = flags;
-	th->th_win = NET_IPV6_MTU;
+	th->th_win = htons(NET_IPV6_MTU);
 	th->th_seq = htonl(seq);
 
 	if (ACK & flags) {

Original file line number	Diff line number	Diff line change
`@@ -293,7 +293,7 @@ static struct net_pkt *tester_prepare_tcp_pkt(sa_family_t af,`
`293`	`293`	`}`
`294`	`294`
`295`	`295`	`th->th_flags = flags;`
`296`		`- th->th_win = NET_IPV6_MTU;`
	`296`	`+ th->th_win = htons(NET_IPV6_MTU);`
`297`	`297`	`th->th_seq = htonl(seq);`
`298`	`298`
`299`	`299`	`if (ACK & flags) {`