Re: [PATCH bpf-next v2] netkit: use netlink policy for mode and policy attributes validation

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Thu, Oct 26, 2023 at 05:43:51PM CEST, kuba@xxxxxxxxxx wrote:
>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.

Yeah :/




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