On 05/18/2017 01:49 PM, Julian Anastasov wrote:

        All 4 patches look ok to me with only a small problem
which comes from patch already included in kernel. I see
that GARP replies can not work for 1394, is_garp will be
cleared. May be 'tha' check should be moved in if expression,
for example:

        if (is_garp && ar_op == htons(ARPOP_REPLY) && tha)
                is_garp = !memcmp(tha, sha, dev->addr_len);

I can easily miss something substantial, so please correct me, but...

If it's of REPLY type, the RFC 2002 requires that target hardware address field equals to source address field for a packet to be considered gratuitous. Since IEEE 1394 ARP standard defines its payload without target field, it seems to me that there is no such thing as a gratuitous ARP reply for IEEE 1394. That's why I think resetting is_garp to 0 for those packets is justified.

Ihar

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