netdev - Re: [PATCH net-next v3 0/4] em_ipt: add support for addrtype

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Date:   Sat, 29 Jun 2019 11:15:31 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     nikolay@...ulusnetworks.com
Cc:     netdev@...r.kernel.org, roopa@...ulusnetworks.com,
        pablo@...filter.org, xiyou.wangcong@...il.com, jiri@...nulli.us,
        jhs@...atatu.com, eyal.birger@...il.com
Subject: Re: [PATCH net-next v3 0/4] em_ipt: add support for addrtype

From: Nikolay Aleksandrov <nikolay@...ulusnetworks.com>
Date: Thu, 27 Jun 2019 11:10:43 +0300

> We would like to be able to use the addrtype from tc for ACL rules and
> em_ipt seems the best place to add support for the already existing xt
> match. The biggest issue is that addrtype revision 1 (with ipv6 support)
> is NFPROTO_UNSPEC and currently em_ipt can't differentiate between v4/v6
> if such xt match is used because it passes the match's family instead of
> the packet one. The first 3 patches make em_ipt match only on IP
> traffic (currently both policy and addrtype recognize such traffic
> only) and make it pass the actual packet's protocol instead of the xt
> match family when it's unspecified. They also add support for NFPROTO_UNSPEC
> xt matches. The last patch allows to add addrtype rules via em_ipt.
> We need to keep the user-specified nfproto for dumping in order to be
> compatible with libxtables, we cannot dump NFPROTO_UNSPEC as the nfproto
> or we'll get an error from libxtables, thus the nfproto is limited to
> ipv4/ipv6 in patch 03 and is recorded.
> 
> v3: don't use the user nfproto for matching, only for dumping, more
>     information is available in the commit message in patch 03
> v2: change patch 02 to set the nfproto only when unspecified and drop
>     patch 04 from v1 (Eyal Birger)

Series applied, thanks Nikolay.