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Merge pull request #3740 from authmillenon/gnrc_ipv6/doc/dispatch_rcv

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gnrc_ipv6: add comment why calling *netapi_dispatch_receive is impossible
This commit is contained in:
Martine Lenders 2015-08-29 09:34:20 +02:00
commit 5863dd908e
1 changed files with 5 additions and 2 deletions
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7
sys/net/gnrc/network_layer/ipv6/gnrc_ipv6.c
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@ -133,8 +133,11 @@ void gnrc_ipv6_demux(kernel_pid_t iface, gnrc_pktsnip_t *pkt, uint8_t nh)
return;
}
gnrc_pktbuf_hold(pkt, receiver_num - 1);
/* IPv6 is not interested anymore so `- 1` */
gnrc_pktbuf_hold(pkt, receiver_num - 1); /* IPv6 is not interested anymore so `- 1` */
/* XXX can't use gnrc_netapi_dispatch_receive() twice here since a call to that function
* implicitly hands all rights to the packet to one of the receiving threads. As a result,
* the second call to gnrc_netapi_dispatch_receive() would be invalid */
_dispatch_rcv_pkt(pkt->type, GNRC_NETREG_DEMUX_CTX_ALL, pkt);
_dispatch_rcv_pkt(GNRC_NETTYPE_IPV6, nh, pkt);
}