diff options
Diffstat (limited to 'nuttx/net/tcp/tcp_send.c')
| -rw-r--r-- | nuttx/net/tcp/tcp_send.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/nuttx/net/tcp/tcp_send.c b/nuttx/net/tcp/tcp_send.c index 1a70b6ab6..5c23b657f 100644 --- a/nuttx/net/tcp/tcp_send.c +++ b/nuttx/net/tcp/tcp_send.c @@ -351,6 +351,7 @@ void tcp_ack(FAR struct net_driver_s *dev, FAR struct tcp_conn_s *conn, uint8_t ack) { struct tcp_iphdr_s *pbuf = BUF; + uint16_t tcp_mss = TCP_IPv4_MSS(dev); /* Save the ACK bits */ @@ -360,8 +361,8 @@ void tcp_ack(FAR struct net_driver_s *dev, FAR struct tcp_conn_s *conn, pbuf->optdata[0] = TCP_OPT_MSS; pbuf->optdata[1] = TCP_OPT_MSS_LEN; - pbuf->optdata[2] = TCP_MSS(dev) / 256; - pbuf->optdata[3] = TCP_MSS(dev) & 255; + pbuf->optdata[2] = tcp_mss >> 8; + pbuf->optdata[3] = tcp_mss & 0xff; dev->d_len = IPv4TCP_HDRLEN + TCP_OPT_MSS_LEN; pbuf->tcpoffset = ((TCP_HDRLEN + TCP_OPT_MSS_LEN) / 4) << 4; |