From: Alexander Duyck <alexander.duyck@gmail.com>
To: David Ahern <dsa@cumulusnetworks.com>, netdev@vger.kernel.org
Subject: Re: [PATCH net-next 1/9] net: Remove martian_source_keep_err goto label
Date: Tue, 22 Sep 2015 18:39:16 -0700 [thread overview]
Message-ID: <560202C4.3090108@gmail.com> (raw)
In-Reply-To: <5601FA87.2080701@gmail.com>
On 09/22/2015 06:04 PM, Alexander Duyck wrote:
> On 09/22/2015 03:55 PM, David Ahern wrote:
>> err is initialized to -EINVAL when it is declared. It is not reset until
>> fib_lookup which is well after the 3 users of the martian_source jump. So
>> resetting err to -EINVAL at martian_source label is not needed.
>>
>> Removing that line obviates the need for the martian_source_keep_err
>> label
>> so delete it.
>>
>> Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
>
> The comments above and the code below don't sync up. The function
> fib_validate_source can return either -EINVAL, -EXDEV, 0, or 1. The
> fact is this may be acceptable as long as all callers of
> ip_route_input_slow will handle a non-zero value as an error and it
> doesn't care about what the actual return value is. If that is what you
> are going for here at least the comment should be updated, and we should
> be explicit somewhere about documenting the return values.
Actually this patch is correct. I got my wires a bit crossed and
misread martian_source vs martian_source_keep_err.
next prev parent reply other threads:[~2015-09-23 1:39 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-22 22:55 [PATCH net-next 0/9] net: Refactor ip_route_input_slow David Ahern
2015-09-22 22:55 ` [PATCH net-next 1/9] net: Remove martian_source_keep_err goto label David Ahern
2015-09-23 1:04 ` Alexander Duyck
2015-09-23 1:39 ` Alexander Duyck [this message]
2015-09-22 22:55 ` [PATCH net-next 2/9] net: Remove e_inval label from ip_route_input_slow David Ahern
2015-09-22 22:55 ` [PATCH net-next 3/9] net: Remove e_nobufs " David Ahern
2015-09-23 2:15 ` Eric W. Biederman
2015-09-23 3:04 ` David Ahern
2015-09-24 10:53 ` David Laight
2015-09-22 22:55 ` [PATCH net-next 4/9] net: Move rth handling from ip_route_input_slow to helper David Ahern
2015-09-23 2:33 ` Alexander Duyck
2015-09-23 3:07 ` David Ahern
2015-09-22 22:55 ` [PATCH net-next 5/9] net: Move martian_destination " David Ahern
2015-09-22 22:55 ` [PATCH net-next 6/9] net: Remove martian_source goto David Ahern
2015-09-22 22:55 ` [PATCH net-next 7/9] net: Remove martian_destination label David Ahern
2015-09-22 22:55 ` [PATCH net-next 8/9] net: Remove local_input label David Ahern
2015-09-22 22:55 ` [PATCH net-next 9/9] net: Remove no_route label David Ahern
2015-09-23 5:51 ` [PATCH net-next 0/9] net: Refactor ip_route_input_slow Alexander Duyck
2015-09-23 14:03 ` David Ahern
-- strict thread matches above, loose matches on Subject: below --
2015-09-23 15:15 [PATCH net-next 0/9 v2] " David Ahern
2015-09-23 15:15 ` [PATCH net-next 1/9] net: Remove martian_source_keep_err goto label David Ahern
2015-09-23 16:19 ` Tom Herbert
2015-09-23 16:22 ` David Ahern
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