From: Jiri Pirko <jiri@resnulli•us>
To: Jamal Hadi Salim <jhs@mojatatu•com>
Cc: davem@davemloft•net, netdev@vger•kernel.org,
xiyou.wangcong@gmail•com, dsahern@gmail•com,
eric.dumazet@gmail•com, mrv@mojatatu•com,
simon.horman@netronome•com, alex.aring@gmail•com
Subject: Re: [PATCH net-next v11 3/4] net sched actions: dump more than TCA_ACT_MAX_PRIO actions per batch
Date: Tue, 25 Jul 2017 14:37:28 +0200 [thread overview]
Message-ID: <20170725123728.GC3186@nanopsycho> (raw)
In-Reply-To: <355f2140-d8e8-8a4e-1f31-cbbcbfd6821b@mojatatu.com>
Tue, Jul 25, 2017 at 02:34:58PM CEST, jhs@mojatatu•com wrote:
>On 17-07-25 07:33 AM, Jiri Pirko wrote:
>> Tue, Jul 25, 2017 at 01:22:44PM CEST, jhs@mojatatu•com wrote:
>
>> > > fb? bf? nbf? Please make this synced within the patchset.
>> > >
>> > >
>> >
>> > Ok, what do you like best? ;->
>>
>> "bf"
>>
>
>Ok.
>
>>
>> >
>> > > Don't you need to mask value with selector? In fact, I think that
>> > > nla_get_bitfield_32 could just return u32 which would be (value&selector).
>> > > The validation takes care of unsupported bits.
>> >
>> > For my use case I dont need any of the above since I dont need to
>> > unset things. In other use cases you will need both selector and
>> > value in case someone wants a bit to be set to 0.
>> > Infact I think i will rename that helper to "nla_get_bitvalue_32"
>> > to be more precise.
>>
>> The getter should contain name of the type, so "nla_get_bitfield32_val"
>> is much better.
>>
>
>Actually I mispoke. I was returning the struct not the value. So
>nla_get_bitfield32() is a better name.
ack
>
>> What if I pass val 0x1 and selector 0x0 from userspace. I don't have the
>> bit selected, so you should not process it in kernel, no?
>>
>
>Yes, valid point. I am not sure - should we reject?
I think that the validation might check this and reject. Makes sense to
me.
next prev parent reply other threads:[~2017-07-25 12:37 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-07-24 1:35 [PATCH net-next v11 0/4] net sched actions: improve dump performance Jamal Hadi Salim
2017-07-24 1:35 ` [PATCH net-next v11 1/4] net netlink: Add new type NLA_BITFIELD_32 Jamal Hadi Salim
2017-07-24 11:14 ` Jiri Pirko
2017-07-25 11:14 ` Jamal Hadi Salim
2017-07-24 11:18 ` Jiri Pirko
2017-07-25 11:15 ` Jamal Hadi Salim
2017-07-25 14:41 ` David Ahern
2017-07-28 13:51 ` Jamal Hadi Salim
2017-07-28 14:08 ` Jiri Pirko
2017-07-28 14:19 ` David Ahern
2017-07-28 14:55 ` Jiri Pirko
2017-07-28 15:04 ` Jamal Hadi Salim
2017-07-28 15:13 ` David Ahern
2017-07-28 21:55 ` Jamal Hadi Salim
2017-07-24 1:35 ` [PATCH net-next v11 2/4] net sched actions: Use proper root attribute table for actions Jamal Hadi Salim
2017-07-24 1:35 ` [PATCH net-next v11 3/4] net sched actions: dump more than TCA_ACT_MAX_PRIO actions per batch Jamal Hadi Salim
2017-07-24 11:27 ` Jiri Pirko
2017-07-25 11:22 ` Jamal Hadi Salim
2017-07-25 11:33 ` Jiri Pirko
2017-07-25 12:34 ` Jamal Hadi Salim
2017-07-25 12:37 ` Jiri Pirko [this message]
2017-07-28 13:41 ` Jamal Hadi Salim
2017-07-28 14:12 ` Jiri Pirko
2017-07-28 14:52 ` Jamal Hadi Salim
2017-07-28 14:57 ` Jiri Pirko
2017-07-28 15:08 ` Jamal Hadi Salim
2017-07-28 15:45 ` Jiri Pirko
2017-07-28 22:10 ` Jamal Hadi Salim
2017-07-29 7:19 ` Jiri Pirko
2017-07-29 11:21 ` Jamal Hadi Salim
2017-07-24 1:35 ` [PATCH net-next v11 4/4] net sched actions: add time filter for action dumping Jamal Hadi Salim
2017-07-24 11:34 ` Jiri Pirko
2017-07-25 11:27 ` Jamal Hadi Salim
2017-07-25 11:34 ` Jiri Pirko
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