From: Maxime Coquelin <maxime.coquelin@redhat.com>
To: "Xia, Chenbo" <chenbo.xia@intel.com>,
"dev@dpdk.org" <dev@dpdk.org>,
"david.marchand@redhat.com" <david.marchand@redhat.com>,
"mkp@redhat.com" <mkp@redhat.com>,
"fbl@redhat.com" <fbl@redhat.com>,
"jasowang@redhat.com" <jasowang@redhat.com>,
"Liang, Cunming" <cunming.liang@intel.com>,
"Xie, Yongji" <xieyongji@bytedance.com>,
"echaudro@redhat.com" <echaudro@redhat.com>,
"eperezma@redhat.com" <eperezma@redhat.com>,
"amorenoz@redhat.com" <amorenoz@redhat.com>
Subject: Re: [RFC 15/27] vhost: add API to set max queue pairs
Date: Thu, 25 May 2023 13:23:30 +0200 [thread overview]
Message-ID: <b62e55ca-73f6-187c-2232-fb1dfb195bd4@redhat.com> (raw)
In-Reply-To: <SN6PR11MB3504D7B45FB2297D36BFEC799C729@SN6PR11MB3504.namprd11.prod.outlook.com>
On 5/5/23 07:07, Xia, Chenbo wrote:
> Hi Maxime,
>
>> -----Original Message-----
>> From: Maxime Coquelin <maxime.coquelin@redhat.com>
>> Sent: Friday, March 31, 2023 11:43 PM
>> To: dev@dpdk.org; david.marchand@redhat.com; Xia, Chenbo
>> <chenbo.xia@intel.com>; mkp@redhat.com; fbl@redhat.com;
>> jasowang@redhat.com; Liang, Cunming <cunming.liang@intel.com>; Xie, Yongji
>> <xieyongji@bytedance.com>; echaudro@redhat.com; eperezma@redhat.com;
>> amorenoz@redhat.com
>> Cc: Maxime Coquelin <maxime.coquelin@redhat.com>
>> Subject: [RFC 15/27] vhost: add API to set max queue pairs
>>
>> This patch introduces a new rte_vhost_driver_set_max_queues
>> API as preliminary work for multiqueue support with VDUSE.
>>
>> Indeed, with VDUSE we need to pre-allocate the vrings at
>> device creation time, so we need such API not to allocate
>> the 128 queue pairs supported by the Vhost library.
>>
>> Calling the API is optional, 128 queue pairs remaining the
>> default.
>>
>> Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
>> ---
>> doc/guides/prog_guide/vhost_lib.rst | 4 ++++
>> lib/vhost/rte_vhost.h | 17 ++++++++++++++
>> lib/vhost/socket.c | 36 +++++++++++++++++++++++++++--
>> lib/vhost/version.map | 3 +++
>> 4 files changed, 58 insertions(+), 2 deletions(-)
>
> Also add changes in release notes? Btw: somewhere we should also mention vduse
> support is added in release notes.
Correct, I need to update the release note in v2.
Thanks,
Maxime
> Thanks,
> Chenbo
>
>>
>> diff --git a/doc/guides/prog_guide/vhost_lib.rst
>> b/doc/guides/prog_guide/vhost_lib.rst
>> index e8bb8c9b7b..cd4b109139 100644
>> --- a/doc/guides/prog_guide/vhost_lib.rst
>> +++ b/doc/guides/prog_guide/vhost_lib.rst
>> @@ -334,6 +334,10 @@ The following is an overview of some key Vhost API
>> functions:
>> Clean DMA vChannel finished to use. After this function is called,
>> the specified DMA vChannel should no longer be used by the Vhost
>> library.
>>
>> +* ``rte_vhost_driver_set_max_queue_num(path, max_queue_pairs)``
>> +
>> + Set the maximum number of queue pairs supported by the device.
>> +
>> Vhost-user Implementations
>> --------------------------
>>
>> diff --git a/lib/vhost/rte_vhost.h b/lib/vhost/rte_vhost.h
>> index 58a5d4be92..44cbfcb469 100644
>> --- a/lib/vhost/rte_vhost.h
>> +++ b/lib/vhost/rte_vhost.h
>> @@ -588,6 +588,23 @@ rte_vhost_driver_get_protocol_features(const char
>> *path,
>> int
>> rte_vhost_driver_get_queue_num(const char *path, uint32_t *queue_num);
>>
>> +/**
>> + * @warning
>> + * @b EXPERIMENTAL: this API may change, or be removed, without prior
>> notice.
>> + *
>> + * Set the maximum number of queue pairs supported by the device.
>> + *
>> + * @param path
>> + * The vhost-user socket file path
>> + * @param max_queue_pairs
>> + * The maximum number of queue pairs
>> + * @return
>> + * 0 on success, -1 on failure
>> + */
>> +__rte_experimental
>> +int
>> +rte_vhost_driver_set_max_queue_num(const char *path, uint32_t
>> max_queue_pairs);
>> +
>> /**
>> * Get the feature bits after negotiation
>> *
>> diff --git a/lib/vhost/socket.c b/lib/vhost/socket.c
>> index ba54263824..e95c3ffeac 100644
>> --- a/lib/vhost/socket.c
>> +++ b/lib/vhost/socket.c
>> @@ -56,6 +56,8 @@ struct vhost_user_socket {
>>
>> uint64_t protocol_features;
>>
>> + uint32_t max_queue_pairs;
>> +
>> struct rte_vdpa_device *vdpa_dev;
>>
>> struct rte_vhost_device_ops const *notify_ops;
>> @@ -821,7 +823,7 @@ rte_vhost_driver_get_queue_num(const char *path,
>> uint32_t *queue_num)
>>
>> vdpa_dev = vsocket->vdpa_dev;
>> if (!vdpa_dev) {
>> - *queue_num = VHOST_MAX_QUEUE_PAIRS;
>> + *queue_num = vsocket->max_queue_pairs;
>> goto unlock_exit;
>> }
>>
>> @@ -831,7 +833,36 @@ rte_vhost_driver_get_queue_num(const char *path,
>> uint32_t *queue_num)
>> goto unlock_exit;
>> }
>>
>> - *queue_num = RTE_MIN((uint32_t)VHOST_MAX_QUEUE_PAIRS,
>> vdpa_queue_num);
>> + *queue_num = RTE_MIN(vsocket->max_queue_pairs, vdpa_queue_num);
>> +
>> +unlock_exit:
>> + pthread_mutex_unlock(&vhost_user.mutex);
>> + return ret;
>> +}
>> +
>> +int
>> +rte_vhost_driver_set_max_queue_num(const char *path, uint32_t
>> max_queue_pairs)
>> +{
>> + struct vhost_user_socket *vsocket;
>> + int ret = 0;
>> +
>> + VHOST_LOG_CONFIG(path, INFO, "Setting max queue pairs to %u\n",
>> max_queue_pairs);
>> +
>> + if (max_queue_pairs > VHOST_MAX_QUEUE_PAIRS) {
>> + VHOST_LOG_CONFIG(path, ERR, "Library only supports up to %u
>> queue pairs\n",
>> + VHOST_MAX_QUEUE_PAIRS);
>> + return -1;
>> + }
>> +
>> + pthread_mutex_lock(&vhost_user.mutex);
>> + vsocket = find_vhost_user_socket(path);
>> + if (!vsocket) {
>> + VHOST_LOG_CONFIG(path, ERR, "socket file is not registered
>> yet.\n");
>> + ret = -1;
>> + goto unlock_exit;
>> + }
>> +
>> + vsocket->max_queue_pairs = max_queue_pairs;
>>
>> unlock_exit:
>> pthread_mutex_unlock(&vhost_user.mutex);
>> @@ -890,6 +921,7 @@ rte_vhost_driver_register(const char *path, uint64_t
>> flags)
>> goto out_free;
>> }
>> vsocket->vdpa_dev = NULL;
>> + vsocket->max_queue_pairs = VHOST_MAX_QUEUE_PAIRS;
>> vsocket->extbuf = flags & RTE_VHOST_USER_EXTBUF_SUPPORT;
>> vsocket->linearbuf = flags & RTE_VHOST_USER_LINEARBUF_SUPPORT;
>> vsocket->async_copy = flags & RTE_VHOST_USER_ASYNC_COPY;
>> diff --git a/lib/vhost/version.map b/lib/vhost/version.map
>> index d322a4a888..dffb126aa8 100644
>> --- a/lib/vhost/version.map
>> +++ b/lib/vhost/version.map
>> @@ -98,6 +98,9 @@ EXPERIMENTAL {
>> # added in 22.11
>> rte_vhost_async_dma_unconfigure;
>> rte_vhost_vring_call_nonblock;
>> +
>> + # added in 23.07
>> + rte_vhost_driver_set_max_queue_num;
>> };
>>
>> INTERNAL {
>> --
>> 2.39.2
>
next prev parent reply other threads:[~2023-05-25 11:23 UTC|newest]
Thread overview: 79+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-31 15:42 [RFC 00/27] Add VDUSE support to Vhost library Maxime Coquelin
2023-03-31 15:42 ` [RFC 01/27] vhost: fix missing guest notif stat increment Maxime Coquelin
2023-04-24 2:57 ` Xia, Chenbo
2023-03-31 15:42 ` [RFC 02/27] vhost: fix invalid call FD handling Maxime Coquelin
2023-04-24 2:58 ` Xia, Chenbo
2023-03-31 15:42 ` [RFC 03/27] vhost: fix IOTLB entries overlap check with previous entry Maxime Coquelin
2023-04-17 19:15 ` Mike Pattrick
2023-04-24 2:58 ` Xia, Chenbo
2023-03-31 15:42 ` [RFC 04/27] vhost: add helper of IOTLB entries coredump Maxime Coquelin
2023-04-24 2:59 ` Xia, Chenbo
2023-03-31 15:42 ` [RFC 05/27] vhost: add helper for IOTLB entries shared page check Maxime Coquelin
2023-04-17 19:39 ` Mike Pattrick
2023-04-19 9:35 ` Maxime Coquelin
2023-04-19 14:52 ` Mike Pattrick
2023-04-24 2:59 ` Xia, Chenbo
2023-03-31 15:42 ` [RFC 06/27] vhost: don't dump unneeded pages with IOTLB Maxime Coquelin
2023-04-20 17:11 ` Mike Pattrick
2023-04-24 3:00 ` Xia, Chenbo
2023-03-31 15:42 ` [RFC 07/27] vhost: change to single IOTLB cache per device Maxime Coquelin
2023-04-25 6:19 ` Xia, Chenbo
2023-05-03 13:47 ` Maxime Coquelin
2023-03-31 15:42 ` [RFC 08/27] vhost: add offset field to IOTLB entries Maxime Coquelin
2023-04-25 6:20 ` Xia, Chenbo
2023-03-31 15:42 ` [RFC 09/27] vhost: add page size info to IOTLB entry Maxime Coquelin
2023-04-25 6:20 ` Xia, Chenbo
2023-05-03 13:57 ` Maxime Coquelin
2023-03-31 15:42 ` [RFC 10/27] vhost: retry translating IOVA after IOTLB miss Maxime Coquelin
2023-05-05 5:07 ` Xia, Chenbo
2023-03-31 15:42 ` [RFC 11/27] vhost: introduce backend ops Maxime Coquelin
2023-05-05 5:07 ` Xia, Chenbo
2023-03-31 15:42 ` [RFC 12/27] vhost: add IOTLB cache entry removal callback Maxime Coquelin
2023-05-05 5:07 ` Xia, Chenbo
2023-05-25 11:20 ` Maxime Coquelin
2023-03-31 15:42 ` [RFC 13/27] vhost: add helper for IOTLB misses Maxime Coquelin
2023-03-31 15:42 ` [RFC 14/27] vhost: add helper for interrupt injection Maxime Coquelin
2023-05-05 5:07 ` Xia, Chenbo
2023-03-31 15:42 ` [RFC 15/27] vhost: add API to set max queue pairs Maxime Coquelin
2023-05-05 5:07 ` Xia, Chenbo
2023-05-25 11:23 ` Maxime Coquelin [this message]
2023-03-31 15:42 ` [RFC 16/27] net/vhost: use " Maxime Coquelin
2023-05-05 5:07 ` Xia, Chenbo
2023-03-31 15:42 ` [RFC 17/27] vhost: add control virtqueue support Maxime Coquelin
2023-05-09 5:29 ` Xia, Chenbo
2023-03-31 15:42 ` [RFC 18/27] vhost: add VDUSE device creation and destruction Maxime Coquelin
2023-05-09 5:31 ` Xia, Chenbo
2023-03-31 15:42 ` [RFC 19/27] vhost: add VDUSE callback for IOTLB miss Maxime Coquelin
2023-05-09 5:31 ` Xia, Chenbo
2023-03-31 15:42 ` [RFC 20/27] vhost: add VDUSE callback for IOTLB entry removal Maxime Coquelin
2023-05-09 5:32 ` Xia, Chenbo
2023-05-25 11:35 ` Maxime Coquelin
2023-03-31 15:42 ` [RFC 21/27] vhost: add VDUSE callback for IRQ injection Maxime Coquelin
2023-05-09 5:33 ` Xia, Chenbo
2023-03-31 15:42 ` [RFC 22/27] vhost: add VDUSE events handler Maxime Coquelin
2023-05-09 5:34 ` Xia, Chenbo
2023-03-31 15:42 ` [RFC 23/27] vhost: add support for virtqueue state get event Maxime Coquelin
2023-05-09 5:34 ` Xia, Chenbo
2023-03-31 15:42 ` [RFC 24/27] vhost: add support for VDUSE status set event Maxime Coquelin
2023-05-09 5:34 ` Xia, Chenbo
2023-03-31 15:42 ` [RFC 25/27] vhost: add support for VDUSE IOTLB update event Maxime Coquelin
2023-05-09 5:35 ` Xia, Chenbo
2023-05-25 11:43 ` Maxime Coquelin
2023-03-31 15:42 ` [RFC 26/27] vhost: add VDUSE device startup Maxime Coquelin
2023-05-09 5:35 ` Xia, Chenbo
2023-03-31 15:42 ` [RFC 27/27] vhost: add multiqueue support to VDUSE Maxime Coquelin
2023-05-09 5:35 ` Xia, Chenbo
2023-04-06 3:44 ` [RFC 00/27] Add VDUSE support to Vhost library Yongji Xie
2023-04-06 8:16 ` Maxime Coquelin
2023-04-06 11:04 ` Yongji Xie
2023-04-12 11:33 ` Ferruh Yigit
2023-04-12 15:28 ` Maxime Coquelin
2023-04-12 19:40 ` Morten Brørup
2023-04-13 7:08 ` Xia, Chenbo
2023-04-13 7:58 ` Morten Brørup
2023-04-13 7:59 ` Maxime Coquelin
2023-04-14 10:48 ` Ferruh Yigit
2023-04-14 12:06 ` Maxime Coquelin
2023-04-14 14:25 ` Ferruh Yigit
2023-04-17 3:10 ` Jason Wang
2023-05-05 5:53 ` Xia, Chenbo
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