From: Maxime Coquelin <maxime.coquelin@redhat.com>
To: "Wodkowski, PawelX" <pawelx.wodkowski@intel.com>,
"Kulasek, TomaszX" <tomaszx.kulasek@intel.com>,
"yliu@fridaylinux.org" <yliu@fridaylinux.org>
Cc: "Verkamp, Daniel" <daniel.verkamp@intel.com>,
"Harris, James R" <james.r.harris@intel.com>,
"dev@dpdk.org" <dev@dpdk.org>,
"Liu, Changpeng" <changpeng.liu@intel.com>,
"Tan, Jianfeng" <jianfeng.tan@intel.com>
Subject: Re: [dpdk-dev] [PATCH v2] vhost: add virtio configuration space messages
Date: Wed, 28 Mar 2018 11:33:59 +0200 [thread overview]
Message-ID: <3637fba9-b6a9-2771-995b-6f1a9c5ff927@redhat.com> (raw)
In-Reply-To: <F6F2A6264E145F47A18AB6DF8E87425D70118B6B@IRSMSX102.ger.corp.intel.com>
On 03/28/2018 11:19 AM, Wodkowski, PawelX wrote:
>> -----Original Message-----
>> From: Maxime Coquelin [mailto:maxime.coquelin@redhat.com]
>> Sent: Wednesday, March 28, 2018 11:12 AM
>> To: Kulasek, TomaszX <tomaszx.kulasek@intel.com>; yliu@fridaylinux.org
>> Cc: Verkamp, Daniel <daniel.verkamp@intel.com>; Harris, James R
>> <james.r.harris@intel.com>; Wodkowski, PawelX
>> <pawelx.wodkowski@intel.com>; dev@dpdk.org; Liu, Changpeng
>> <changpeng.liu@intel.com>; Tan, Jianfeng <jianfeng.tan@intel.com>
>> Subject: Re: [dpdk-dev] [PATCH v2] vhost: add virtio configuration space
>> messages
>>
>>
>>
>> On 03/27/2018 05:35 PM, Tomasz Kulasek wrote:
>>> This patch adds new vhost user messages GET_CONFIG and SET_CONFIG used
>>> for get/set virtio device's configuration space.
>>>
>>> Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
>>> Signed-off-by: Tomasz Kulasek <tomaszx.kulasek@intel.com>
>>> ---
>>> Changes in v2:
>>> - code cleanup
>>>
>>> lib/librte_vhost/rte_vhost.h | 4 ++++
>>> lib/librte_vhost/vhost_user.c | 22 ++++++++++++++++++++++
>>> lib/librte_vhost/vhost_user.h | 16 ++++++++++++++++
>>> 3 files changed, 42 insertions(+)
>>>
>>> diff --git a/lib/librte_vhost/rte_vhost.h b/lib/librte_vhost/rte_vhost.h
>>> index d332069..fe30518 100644
>>> --- a/lib/librte_vhost/rte_vhost.h
>>> +++ b/lib/librte_vhost/rte_vhost.h
>>> @@ -84,6 +84,10 @@ struct vhost_device_ops {
>>> int (*new_connection)(int vid);
>>> void (*destroy_connection)(int vid);
>>>
>>> + int (*get_config)(int vid, uint8_t *config, uint32_t config_len);
>>> + int (*set_config)(int vid, uint8_t *config, uint32_t offset,
>>> + uint32_t len, uint32_t flags);
>>> +
>>> void *reserved[2]; /**< Reserved for future extension */
>>
>> You are breaking the ABI, as you grow the size of the ops struct.
>>
>> Also, I'm wondering if we shouldn't have a different ops for external
>> backends. Here these ops are more intended to the application, we could
>> have a specific ops struct for external backends IMHO.
>
> What do mean by "external backends" ?
Libs like SPDK or Crypto that implements their own ring processing,
comparing to an application like DPDK that doesn't care of rings
details.
next prev parent reply other threads:[~2018-03-28 9:34 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-27 15:17 [dpdk-dev] [PATCH] " Tomasz Kulasek
2018-03-27 15:35 ` [dpdk-dev] [PATCH v2] " Tomasz Kulasek
2018-03-28 9:11 ` Maxime Coquelin
2018-03-28 9:19 ` Wodkowski, PawelX
2018-03-28 9:33 ` Maxime Coquelin [this message]
2018-03-28 9:48 ` Maxime Coquelin
2018-03-28 9:50 ` Liu, Changpeng
2018-03-28 9:57 ` Maxime Coquelin
2018-03-28 10:03 ` Liu, Changpeng
2018-03-28 10:11 ` Maxime Coquelin
2018-03-28 10:23 ` Liu, Changpeng
2018-03-28 10:56 ` Maxime Coquelin
2018-04-19 14:39 ` Maxime Coquelin
2018-04-20 0:32 ` Liu, Changpeng
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