diff options
Diffstat (limited to 'nuttx/net/udp/udp_poll.c')
| -rw-r--r-- | nuttx/net/udp/udp_poll.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/nuttx/net/udp/udp_poll.c b/nuttx/net/udp/udp_poll.c index d19f72a76..43ea3e8cc 100644 --- a/nuttx/net/udp/udp_poll.c +++ b/nuttx/net/udp/udp_poll.c @@ -98,10 +98,18 @@ void udp_poll(FAR struct net_driver_s *dev, FAR struct udp_conn_s *conn) if (conn->lport != 0) { - /* Set-up for the application callback */ + /* Set up for the callback. We can't know in advance if the application + * is going to send a IPv4 or an IPv6 packet, so this setup may not + * actually be used. + */ +#if defined(CONFIG_NET_IPv4) dev->d_appdata = &dev->d_buf[NET_LL_HDRLEN(dev) + IPv4UDP_HDRLEN]; dev->d_snddata = &dev->d_buf[NET_LL_HDRLEN(dev) + IPv4UDP_HDRLEN]; +#else /* if defined(CONFIG_NET_IPv6) */ + dev->d_appdata = &dev->d_buf[NET_LL_HDRLEN(dev) + IPv6UDP_HDRLEN]; + dev->d_snddata = &dev->d_buf[NET_LL_HDRLEN(dev) + IPv6UDP_HDRLEN]; +#endif dev->d_len = 0; dev->d_sndlen = 0; |