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gnrc_netif_ieee802154: Provide LQI, RSSI in raw mode via netif_hdr

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Useful in sniffer situations to see the signal strength of a received
packet. Also avoids the crash described in
https://github.com/RIOT-OS/applications/pull/54
This commit is contained in:
Joakim Nohlgård 2018-10-27 00:22:51 +02:00
parent f139dfdad2
commit 52ac53b4d9
1 changed files with 17 additions and 1 deletions
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18
sys/net/gnrc/netif/gnrc_netif_ieee802154.c
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@ -96,7 +96,23 @@ static gnrc_pktsnip_t *_recv(gnrc_netif_t *netif)
gnrc_pktbuf_release(pkt); gnrc_pktbuf_release(pkt);
return NULL; return NULL;
} }
if (!(netif->flags & GNRC_NETIF_FLAGS_RAWMODE)) { if (netif->flags & GNRC_NETIF_FLAGS_RAWMODE) {
/* Raw mode, skip packet processing, but provide rx_info via
* GNRC_NETTYPE_NETIF */
gnrc_pktsnip_t *netif_snip = gnrc_netif_hdr_build(NULL, 0, NULL, 0);
if (netif_snip == NULL) {
DEBUG("_recv_ieee802154: no space left in packet buffer\n");
gnrc_pktbuf_release(pkt);
return NULL;
}
gnrc_netif_hdr_t *hdr = netif_snip->data;
hdr->lqi = rx_info.lqi;
hdr->rssi = rx_info.rssi;
hdr->if_pid = thread_getpid();
LL_APPEND(pkt, netif_snip);
}
else {
/* Normal mode, try to parse the frame according to IEEE 802.15.4 */
gnrc_pktsnip_t *ieee802154_hdr, *netif_hdr; gnrc_pktsnip_t *ieee802154_hdr, *netif_hdr;
gnrc_netif_hdr_t *hdr; gnrc_netif_hdr_t *hdr;
#if ENABLE_DEBUG #if ENABLE_DEBUG