From: Ido Schimmel <idosch@idosch.org>
To: David Ahern <dsahern@gmail.com>
Cc: Petr Machata <petrm@nvidia.com>,
netdev@vger.kernel.org, David Ahern <dsahern@kernel.org>,
"David S. Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>,
Ido Schimmel <idosch@nvidia.com>, Petr Machata <petrm@nvidia.org>
Subject: Re: [PATCH net-next 0/3] nexthop: More fine-grained policies for netlink message validation
Date: Mon, 18 Jan 2021 20:29:10 +0200 [thread overview]
Message-ID: <20210118182910.GA2334694@shredder.lan> (raw)
In-Reply-To: <f2ba918f-6781-3740-fe49-756fe4fb40c5@gmail.com>
On Mon, Jan 18, 2021 at 10:43:22AM -0700, David Ahern wrote:
> On 1/18/21 7:05 AM, Petr Machata wrote:
> > From: Petr Machata <petrm@nvidia.org>
> >
> > There is currently one policy that covers all attributes for next hop
> > object management. Actual validation is then done in code, which makes it
> > unobvious which attributes are acceptable when, and indeed that everything
> > is rejected as necessary.
> >
> > In this series, split rtm_nh_policy to several policies that cover various
> > aspects of the next hop object configuration, and instead of open-coding
> > the validation, defer to nlmsg_parse(). This should make extending the next
> > hop code simpler as well, which will be relevant in near future for
> > resilient hashing implementation.
> >
> > This was tested by running tools/testing/selftests/net/fib_nexthops.sh.
> > Additionally iproute2 was tweaked to issue "nexthop list id" as an
> > RTM_GETNEXTHOP dump request, instead of a straight get to test that
> > unexpected attributes are indeed rejected.
> >
> > In patch #1, convert attribute validation in nh_valid_get_del_req().
> >
> > In patch #2, convert nh_valid_dump_req().
> >
> > In patch #3, rtm_nh_policy is cleaned up and renamed to rtm_nh_policy_new,
> > because after the above two patches, that is the only context that it is
> > used in.
> >
> > Petr Machata (3):
> > nexthop: Use a dedicated policy for nh_valid_get_del_req()
> > nexthop: Use a dedicated policy for nh_valid_dump_req()
> > nexthop: Specialize rtm_nh_policy
> >
> > net/ipv4/nexthop.c | 85 +++++++++++++++++-----------------------------
> > 1 file changed, 32 insertions(+), 53 deletions(-)
> >
>
> good cleanup. thanks for doing this. Did you run fib_nexthops.sh
> selftests on the change? Seems right, but always good to run that script
> which has functional tests about valid attribute combinations.
"This was tested by running tools/testing/selftests/net/fib_nexthops.sh"
:)
prev parent reply other threads:[~2021-01-18 18:38 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-18 14:05 [PATCH net-next 0/3] nexthop: More fine-grained policies for netlink message validation Petr Machata
2021-01-18 14:05 ` [PATCH net-next 1/3] nexthop: Use a dedicated policy for nh_valid_get_del_req() Petr Machata
2021-01-18 17:41 ` David Ahern
2021-01-19 20:55 ` Jakub Kicinski
2021-01-20 2:28 ` David Ahern
2021-01-20 2:35 ` Jakub Kicinski
2021-01-20 10:45 ` Petr Machata
2021-01-18 14:05 ` [PATCH net-next 2/3] nexthop: Use a dedicated policy for nh_valid_dump_req() Petr Machata
2021-01-18 17:41 ` David Ahern
2021-01-19 20:55 ` Jakub Kicinski
2021-01-20 10:46 ` Petr Machata
2021-01-18 14:05 ` [PATCH net-next 3/3] nexthop: Specialize rtm_nh_policy Petr Machata
2021-01-18 17:42 ` David Ahern
2021-01-18 17:43 ` [PATCH net-next 0/3] nexthop: More fine-grained policies for netlink message validation David Ahern
2021-01-18 18:29 ` Ido Schimmel [this message]
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