From: "Xia, Chenbo" <chenbo.xia@intel.com>
To: Maxime Coquelin <maxime.coquelin@redhat.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 11/27] vhost: introduce backend ops
Date: Fri, 5 May 2023 05:07:31 +0000 [thread overview]
Message-ID: <SN6PR11MB3504B327CAF37B7715264EC99C729@SN6PR11MB3504.namprd11.prod.outlook.com> (raw)
In-Reply-To: <20230331154259.1447831-12-maxime.coquelin@redhat.com>
> -----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 11/27] vhost: introduce backend ops
>
> This patch introduces backend ops struct, that will enable
> calling backend specifics callbacks (Vhost-user, VDUSE), in
> shared code.
>
> This is an empty shell for now, it will be filled in later
> patches.
>
> Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
> ---
> lib/vhost/socket.c | 2 +-
> lib/vhost/vhost.c | 8 +++++++-
> lib/vhost/vhost.h | 10 +++++++++-
> lib/vhost/vhost_user.c | 8 ++++++++
> lib/vhost/vhost_user.h | 1 +
> 5 files changed, 26 insertions(+), 3 deletions(-)
>
> diff --git a/lib/vhost/socket.c b/lib/vhost/socket.c
> index 669c322e12..ba54263824 100644
> --- a/lib/vhost/socket.c
> +++ b/lib/vhost/socket.c
> @@ -221,7 +221,7 @@ vhost_user_add_connection(int fd, struct
> vhost_user_socket *vsocket)
> return;
> }
>
> - vid = vhost_new_device();
> + vid = vhost_user_new_device();
> if (vid == -1) {
> goto err;
> }
> diff --git a/lib/vhost/vhost.c b/lib/vhost/vhost.c
> index 4f16307e4d..41f212315e 100644
> --- a/lib/vhost/vhost.c
> +++ b/lib/vhost/vhost.c
> @@ -676,11 +676,16 @@ reset_device(struct virtio_net *dev)
> * there is a new virtio device being attached).
> */
> int
> -vhost_new_device(void)
> +vhost_new_device(struct vhost_backend_ops *ops)
> {
> struct virtio_net *dev;
> int i;
>
> + if (ops == NULL) {
> + VHOST_LOG_CONFIG("device", ERR, "missing backend ops.\n");
> + return -1;
> + }
> +
> pthread_mutex_lock(&vhost_dev_lock);
> for (i = 0; i < RTE_MAX_VHOST_DEVICE; i++) {
> if (vhost_devices[i] == NULL)
> @@ -708,6 +713,7 @@ vhost_new_device(void)
> dev->backend_req_fd = -1;
> dev->postcopy_ufd = -1;
> rte_spinlock_init(&dev->backend_req_lock);
> + dev->backend_ops = ops;
>
> return i;
> }
> diff --git a/lib/vhost/vhost.h b/lib/vhost/vhost.h
> index 4ace5ab081..cc5c707205 100644
> --- a/lib/vhost/vhost.h
> +++ b/lib/vhost/vhost.h
> @@ -89,6 +89,12 @@
> for (iter = val; iter < num; iter++)
> #endif
>
> +/**
> + * Structure that contains backend-specific ops.
> + */
> +struct vhost_backend_ops {
> +};
> +
> /**
> * Structure contains buffer address, length and descriptor index
> * from vring to do scatter RX.
> @@ -513,6 +519,8 @@ struct virtio_net {
> void *extern_data;
> /* pre and post vhost user message handlers for the device */
> struct rte_vhost_user_extern_ops extern_ops;
> +
> + struct vhost_backend_ops *backend_ops;
> } __rte_cache_aligned;
>
> static inline void
> @@ -812,7 +820,7 @@ get_device(int vid)
> return dev;
> }
>
> -int vhost_new_device(void);
> +int vhost_new_device(struct vhost_backend_ops *ops);
> void cleanup_device(struct virtio_net *dev, int destroy);
> void reset_device(struct virtio_net *dev);
> void vhost_destroy_device(int);
> diff --git a/lib/vhost/vhost_user.c b/lib/vhost/vhost_user.c
> index a989f2c46d..2d5dec5bc1 100644
> --- a/lib/vhost/vhost_user.c
> +++ b/lib/vhost/vhost_user.c
> @@ -3464,3 +3464,11 @@ int rte_vhost_host_notifier_ctrl(int vid, uint16_t
> qid, bool enable)
>
> return ret;
> }
> +
> +static struct vhost_backend_ops vhost_user_backend_ops;
> +
> +int
> +vhost_user_new_device(void)
> +{
> + return vhost_new_device(&vhost_user_backend_ops);
> +}
> diff --git a/lib/vhost/vhost_user.h b/lib/vhost/vhost_user.h
> index a0987a58f9..61456049c8 100644
> --- a/lib/vhost/vhost_user.h
> +++ b/lib/vhost/vhost_user.h
> @@ -185,5 +185,6 @@ int vhost_user_iotlb_miss(struct virtio_net *dev,
> uint64_t iova, uint8_t perm);
> int read_fd_message(char *ifname, int sockfd, char *buf, int buflen, int
> *fds, int max_fds,
> int *fd_num);
> int send_fd_message(char *ifname, int sockfd, char *buf, int buflen, int
> *fds, int fd_num);
> +int vhost_user_new_device(void);
>
> #endif
> --
> 2.39.2
Reviewed-by: Chenbo Xia <chenbo.xia@intel.com>
next prev parent reply other threads:[~2023-05-05 5:07 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 [this message]
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
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
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=SN6PR11MB3504B327CAF37B7715264EC99C729@SN6PR11MB3504.namprd11.prod.outlook.com \
--to=chenbo.xia@intel.com \
--cc=amorenoz@redhat.com \
--cc=cunming.liang@intel.com \
--cc=david.marchand@redhat.com \
--cc=dev@dpdk.org \
--cc=echaudro@redhat.com \
--cc=eperezma@redhat.com \
--cc=fbl@redhat.com \
--cc=jasowang@redhat.com \
--cc=maxime.coquelin@redhat.com \
--cc=mkp@redhat.com \
--cc=xieyongji@bytedance.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).