ieee802154_submac: IPv6 fragmentation broken #16998
Description
Description
Steps to reproduce the issue
- Select the
gnrc_ipv6_ext_fragmodule. - send a large ICMPv6 ping message (e.g. 2k) to another node with
gnrc_ipv6_ext_fragenabled
Expected results
Fragmented IPv6 packets should be echoed back
2021-10-17 19:29:50,937 # ping -s 2048 fe80::ac8d:fee1:6041:91f1
2021-10-17 19:29:51,232 # 2056 bytes from fe80::ac8d:fee1:6041:91f1%6: icmp_seq=0 ttl=64 rssi=-40 dBm time=286.008 ms
2021-10-17 19:29:52,232 # 2056 bytes from fe80::ac8d:fee1:6041:91f1%6: icmp_seq=1 ttl=64 rssi=-40 dBm time=284.409 ms
2021-10-17 19:29:53,234 # 2056 bytes from fe80::ac8d:fee1:6041:91f1%6: icmp_seq=2 ttl=64 rssi=-40 dBm time=285.100 ms
2021-10-17 19:29:53,234 #
2021-10-17 19:29:53,238 # --- fe80::ac8d:fee1:6041:91f1 PING statistics ---
2021-10-17 19:29:53,243 # 3 packets transmitted, 3 packets received, 0% packet loss
2021-10-17 19:29:53,248 # round-trip min/avg/max = 284.409/285.172/286.008 ms
Actual results
Sending of fragmented IPv6 packets fails
2021-10-17 19:40:39,173 # ping -s 2048 fe80::204:2519:1801:c905
2021-10-17 19:40:40,176 # gnrc_netif: can't queue packet for sending
2021-10-17 19:40:40,177 # gnrc_netif: can't queue packet for sending
2021-10-17 19:40:40,179 # gnrc_netif: can't queue packet for sending
2021-10-17 19:40:40,180 # gnrc_netif: can't queue packet for sending
2021-10-17 19:40:40,182 # gnrc_netif: can't queue packet for sending
2021-10-17 19:40:40,184 # gnrc_netif: can't queue packet for sending
2021-10-17 19:40:40,185 # gnrc_netif: can't queue packet for sending
2021-10-17 19:40:40,186 # gnrc_netif: can't queue packet for sending
2021-10-17 19:40:42,173 #
2021-10-17 19:40:42,175 # --- fe80::204:2519:1801:c905 PING statistics ---
2021-10-17 19:40:42,176 # 3 packets transmitted, 0 packets received, 100% packet loss
6LoWPAN fragmented frames still work
2021-10-17 19:41:10,772 # ping -s 512 fe80::204:2519:1801:c905
2021-10-17 19:41:10,865 # 520 bytes from fe80::204:2519:1801:c905%7: icmp_seq=0 ttl=64 rssi=68 dBm time=91.283 ms
2021-10-17 19:41:11,867 # 520 bytes from fe80::204:2519:1801:c905%7: icmp_seq=1 ttl=64 rssi=68 dBm time=92.051 ms
2021-10-17 19:41:12,858 # 520 bytes from fe80::204:2519:1801:c905%7: icmp_seq=2 ttl=64 rssi=68 dBm time=83.843 ms
2021-10-17 19:41:12,858 #
2021-10-17 19:41:12,858 # --- fe80::204:2519:1801:c905 PING statistics ---
2021-10-17 19:41:12,859 # 3 packets transmitted, 3 packets received, 0% packet loss
2021-10-17 19:41:12,860 # round-trip min/avg/max = 83.843/89.059/92.051 ms
Versions
RIOT master & 2021.10-branch