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Message-ID: <20231026084351.6bb4ba8a@kernel.org> Date: Thu, 26 Oct 2023 08:43:51 -0700 From: Jakub Kicinski <kuba@...nel.org> To: Nikolay Aleksandrov <razor@...ckwall.org> Cc: bpf@...r.kernel.org, jiri@...nulli.us, netdev@...r.kernel.org, martin.lau@...ux.dev, ast@...nel.org, andrii@...nel.org, john.fastabend@...il.com, andrew@...n.ch, toke@...nel.org, toke@...hat.com, sdf@...gle.com, daniel@...earbox.net, idosch@...sch.org Subject: Re: [PATCH bpf-next v2] netkit: use netlink policy for mode and policy attributes validation On Thu, 26 Oct 2023 18:16:59 +0300 Nikolay Aleksandrov wrote: > static const struct nla_policy netkit_policy[IFLA_NETKIT_MAX + 1] = { > [IFLA_NETKIT_PEER_INFO] = { .len = sizeof(struct ifinfomsg) }, > - [IFLA_NETKIT_POLICY] = { .type = NLA_U32 }, > - [IFLA_NETKIT_MODE] = { .type = NLA_U32 }, > - [IFLA_NETKIT_PEER_POLICY] = { .type = NLA_U32 }, > + [IFLA_NETKIT_POLICY] = NLA_POLICY_VALIDATE_FN(NLA_BINARY, > + netkit_check_policy, > + sizeof(u32)), > + [IFLA_NETKIT_MODE] = NLA_POLICY_VALIDATE_FN(NLA_BINARY, > + netkit_check_mode, > + sizeof(u32)), > + [IFLA_NETKIT_PEER_POLICY] = NLA_POLICY_VALIDATE_FN(NLA_BINARY, > + netkit_check_policy, > + sizeof(u32)), I vote to leave this code be. It's not perfect. But typing it as binary is not getting us closer to perfection.
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