Merge pull request #10742 from gschorcht/gnrc_netif_enh

gnrc_netif_*: use the `gnrc_netif_t::pid` member instead of the pid of the current thread in netif header

sys/net/gnrc/netif/ethernet/gnrc_netif_ethernet.c

@@ -226,7 +226,7 @@ static gnrc_pktsnip_t *_recv(gnrc_netif_t *netif)
         gnrc_netif_hdr_init(netif_hdr->data, ETHERNET_ADDR_LEN, ETHERNET_ADDR_LEN);
         gnrc_netif_hdr_set_src_addr(netif_hdr->data, hdr->src, ETHERNET_ADDR_LEN);
         gnrc_netif_hdr_set_dst_addr(netif_hdr->data, hdr->dst, ETHERNET_ADDR_LEN);
-        ((gnrc_netif_hdr_t *)netif_hdr->data)->if_pid = thread_getpid();
+        ((gnrc_netif_hdr_t *)netif_hdr->data)->if_pid = netif->pid;
 
         DEBUG("gnrc_netif_ethernet: received packet from %02x:%02x:%02x:%02x:%02x:%02x "
               "of length %d\n",

sys/net/gnrc/netif/ieee802154/gnrc_netif_ieee802154.c

@@ -107,7 +107,7 @@ static gnrc_pktsnip_t *_recv(gnrc_netif_t *netif)
             gnrc_netif_hdr_t *hdr = netif_snip->data;
             hdr->lqi = rx_info.lqi;
             hdr->rssi = rx_info.rssi;
-            hdr->if_pid = thread_getpid();
+            hdr->if_pid = netif->pid;
             LL_APPEND(pkt, netif_snip);
         }
         else {