Message-ID: <52DFC664.6010008@redhat.com>
Date:	Wed, 22 Jan 2014 14:23:48 +0100
From:	Nikolay Aleksandrov <nikolay@...hat.com>
To:	Ding Tianhong <dingtianhong@...wei.com>, netdev@...r.kernel.org
CC:	Andy Gospodarek <andy@...yhouse.net>,
	Jay Vosburgh <fubar@...ibm.com>,
	Veaceslav Falico <vfalico@...hat.com>,
	Scott Feldman <sfeldma@...ulusnetworks.com>,
	"David S. Miller" <davem@...emloft.net>
Subject: Re: [PATCH net-next 00/25] bonding: introduce new option API

On 01/22/2014 03:01 AM, Ding Tianhong wrote:
> On 2014/1/21 22:54, Nikolay Aleksandrov wrote:
>> Hi,
>> This patchset's goal is to introduce a new option API which should be used
>> to properly describe the bonding options with their mode dependcies and
>> requirements. With this patchset applied we get centralized option
>> manipulation, automatic RTNL acquire per option setting, automatic option
>> range checking, mode dependcy checking and other various flags which are
>> described in detail in patch 01's commit message and comments.
>> Also the parameter passing is changed to use a specialized structure which
>> is initialized to a value depending on the needs.
>> The main exported functions are:
>>  __bond_opt_set() - set an option (RTNL should be acquired prior)
>>  bond_opt_init(val|str) - init a bond_opt_value struct for value or string
>>                           parameter passing
>>  bond_opt_tryset_rtnl() - function which tries to acquire rtnl, mainly used
>>                           for sysfs
>>  bond_opt_parse - used to parse or check for valid values
>>  bond_opt_get - retrieve a pointer to bond_option struct for some option
>>  bond_opt_get_val - retrieve a pointer to a bond_opt_value struct for
>>                     some value
>>
>> The same functions are used to set an option via sysfs and netlink, just
>> the parameter that's passed is usually initialized in a different way.
>> The converted options have multiple style fixes, there're some longer
>> lines but they looked either ugly or were strings/pr_warnings, if you
>> think some line would be better broken just let me know :-) there're
>> also a few sscanf false-positive warnings.
>> I decided to keep the "unsuppmodes" way of mode dep checking since it's
>> straight forward, if we make a more general way for checking dependencies
>> it'll be easy to change it.
>>
>> Future plans for this work include:
>>  - Automatic sysfs generation from the bond_opts[].
>>  - Use of the API in bond_check_params() and thus cleaning it up (this has
>>    actually started, I'll take care of the rest in a separate patch)
>>  - Clean up all option-unrelated files of option definitions and functions
>>
>> I've tried to leave as much documentation as possible, if there's anything
>> unclear please let me know. One more thing, I haven't moved all
>> option-related functions from bonding.h to the new bond_options.h, this
>> will be done in a separate patch, it's in my todo list.
>>
>> This patchset has been tested by setting each converted option via sysfs
>> and netlink to a couple of wrong values, a couple of correct values and
>> some random values, also for the opts that have flags they have been
>> tested as well.
>>
>> Best regards,
>>  Nikolay Aleksandrov
>>
> 
> cool work, I think I can applied and test them, but it is really a hard work.:)
> 
> Ding
> 

Thanks Ding, any testing would be appreciated!
I'm about to post a v2 on top of net-next with the reciprocal_divide changes
that got in while waiting, it should apply cleanly now.

>> CC: Andy Gospodarek <andy@...yhouse.net>
>> CC: Jay Vosburgh <fubar@...ibm.com>
>> CC: Veaceslav Falico <vfalico@...hat.com>
>> CC: Scott Feldman <sfeldma@...ulusnetworks.com>
>> CC: David S. Miller <davem@...emloft.net>
>>
>> Nikolay Aleksandrov (25):
>>   bonding: add infrastructure for an option API
>>   bonding: convert mode setting to use the new option API
>>   bonding: convert packets_per_slave to use the new option API
>>   bonding: convert xmit_hash_policy to use the new option API
>>   bonding: convert arp_validate to use the new option API
>>   bonding: convert arp_all_targets to use the new option API
>>   bonding: convert fail_over_mac to use the new option API
>>   bonding: convert arp_interval to use the new option API
>>   bonding: convert arp_ip_target to use the new option API
>>   bonding: convert downdelay to use the new option API
>>   bonding: convert updelay to use the new option API
>>   bonding: convert lacp_rate to use the new option API
>>   bonding: convert min_links to use the new option API
>>   bonding: convert ad_select to use the new option API
>>   bonding: convert num_peer_notif to use the new option API
>>   bonding: convert miimon to use the new option API
>>   bonding: convert primary to use the new option API
>>   bonding: convert primary_reselect to use the new option API
>>   bonding: convert use_carrier to use the new option API
>>   bonding: convert active_slave to use the new option API
>>   bonding: convert queue_id to use the new option API
>>   bonding: convert all_slaves_active to use the new option API
>>   bonding: convert resend_igmp to use the new option API
>>   bonding: convert lp_interval to use the new option API
>>   bonding: convert slaves to use the new option API
>>
>>  drivers/net/bonding/bond_main.c    |  179 +++---
>>  drivers/net/bonding/bond_netlink.c |   87 ++-
>>  drivers/net/bonding/bond_options.c | 1086 +++++++++++++++++++++++++++---------
>>  drivers/net/bonding/bond_options.h |  170 ++++++
>>  drivers/net/bonding/bond_procfs.c  |   25 +-
>>  drivers/net/bonding/bond_sysfs.c   |  519 +++--------------
>>  drivers/net/bonding/bonding.h      |   29 +-
>>  7 files changed, 1214 insertions(+), 881 deletions(-)
>>  create mode 100644 drivers/net/bonding/bond_options.h
>>
> 
> 

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