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From: "Xia, Chenbo" <chenbo.xia@intel.com>
To: Maxime Coquelin <maxime.coquelin@redhat.com>,
	"dev@dpdk.org" <dev@dpdk.org>,
	"olivier.matz@6wind.com" <olivier.matz@6wind.com>,
	"amorenoz@redhat.com" <amorenoz@redhat.com>,
	"david.marchand@redhat.com" <david.marchand@redhat.com>
Subject: Re: [dpdk-dev] [PATCH v2 39/44] net/virtio: introduce backend data
Date: Fri, 22 Jan 2021 08:26:17 +0000
Message-ID: <MN2PR11MB40632EF6C284798176C79BCF9CA00@MN2PR11MB4063.namprd11.prod.outlook.com> (raw)
In-Reply-To: <20210119212507.1043636-40-maxime.coquelin@redhat.com>

> -----Original Message-----
> From: Maxime Coquelin <maxime.coquelin@redhat.com>
> Sent: Wednesday, January 20, 2021 5:25 AM
> To: dev@dpdk.org; Xia, Chenbo <chenbo.xia@intel.com>; olivier.matz@6wind.com;
> amorenoz@redhat.com; david.marchand@redhat.com
> Cc: Maxime Coquelin <maxime.coquelin@redhat.com>
> Subject: [PATCH v2 39/44] net/virtio: introduce backend data
> 
> The goal of this patch is to introduce backend-specific
> data in order to better isolate what is backend-specific
> from what is generic to Virtio-user.
> 
> For now, only Vhost-user protocol features are moved to
> Vhost-user backend data.
> 
> Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
> ---
>  drivers/net/virtio/virtio_user/vhost.h        |  1 +
>  drivers/net/virtio/virtio_user/vhost_kernel.c |  7 +++
>  drivers/net/virtio/virtio_user/vhost_user.c   | 62 +++++++++++++++----
>  drivers/net/virtio/virtio_user/vhost_vdpa.c   |  7 +++
>  .../net/virtio/virtio_user/virtio_user_dev.c  |  2 +
>  .../net/virtio/virtio_user/virtio_user_dev.h  |  2 +
>  6 files changed, 68 insertions(+), 13 deletions(-)
> 
> diff --git a/drivers/net/virtio/virtio_user/vhost.h
> b/drivers/net/virtio/virtio_user/vhost.h
> index dfa2735a20..fc4f059c02 100644
> --- a/drivers/net/virtio/virtio_user/vhost.h
> +++ b/drivers/net/virtio/virtio_user/vhost.h
> @@ -65,6 +65,7 @@ struct virtio_user_dev;
> 
>  struct virtio_user_backend_ops {
>  	int (*setup)(struct virtio_user_dev *dev);
> +	int (*destroy)(struct virtio_user_dev *dev);
>  	int (*get_backend_features)(uint64_t *features);
>  	int (*set_owner)(struct virtio_user_dev *dev);
>  	int (*get_features)(struct virtio_user_dev *dev, uint64_t *features);
> diff --git a/drivers/net/virtio/virtio_user/vhost_kernel.c
> b/drivers/net/virtio/virtio_user/vhost_kernel.c
> index 5477eb7015..47fb4427be 100644
> --- a/drivers/net/virtio/virtio_user/vhost_kernel.c
> +++ b/drivers/net/virtio/virtio_user/vhost_kernel.c
> @@ -357,6 +357,12 @@ vhost_kernel_setup(struct virtio_user_dev *dev)
>  	return 0;
>  }
> 
> +static int
> +vhost_kernel_destroy(struct virtio_user_dev *dev __rte_unused)
> +{
> +	return 0;
> +}
> +
>  static int
>  vhost_kernel_set_backend(int vhostfd, int tapfd)
>  {
> @@ -455,6 +461,7 @@ vhost_kernel_get_backend_features(uint64_t *features)
> 
>  struct virtio_user_backend_ops virtio_ops_kernel = {
>  	.setup = vhost_kernel_setup,
> +	.destroy = vhost_kernel_destroy,
>  	.get_backend_features = vhost_kernel_get_backend_features,
>  	.set_owner = vhost_kernel_set_owner,
>  	.get_features = vhost_kernel_get_features,
> diff --git a/drivers/net/virtio/virtio_user/vhost_user.c
> b/drivers/net/virtio/virtio_user/vhost_user.c
> index 986d8ac1ac..0147b6d963 100644
> --- a/drivers/net/virtio/virtio_user/vhost_user.c
> +++ b/drivers/net/virtio/virtio_user/vhost_user.c
> @@ -17,6 +17,9 @@
>  #include "vhost.h"
>  #include "virtio_user_dev.h"
> 
> +struct vhost_user_data {
> +	uint64_t protocol_features;
> +};
> 
>  #ifndef VHOST_USER_F_PROTOCOL_FEATURES
>  #define VHOST_USER_F_PROTOCOL_FEATURES 30
> @@ -287,6 +290,7 @@ static int
>  vhost_user_get_features(struct virtio_user_dev *dev, uint64_t *features)
>  {
>  	int ret;
> +	struct vhost_user_data *data = dev->backend_data;
>  	struct vhost_user_msg msg = {
>  		.request = VHOST_USER_GET_FEATURES,
>  		.flags = VHOST_USER_VERSION,
> @@ -316,17 +320,17 @@ vhost_user_get_features(struct virtio_user_dev *dev,
> uint64_t *features)
>  		return 0;
> 
>  	/* Negotiate protocol features */
> -	ret = vhost_user_get_protocol_features(dev, &dev->protocol_features);
> +	ret = vhost_user_get_protocol_features(dev, &data->protocol_features);
>  	if (ret < 0)
>  		goto err;
> 
> -	dev->protocol_features &= VHOST_USER_SUPPORTED_PROTOCOL_FEATURES;
> +	data->protocol_features &= VHOST_USER_SUPPORTED_PROTOCOL_FEATURES;
> 
> -	ret = vhost_user_set_protocol_features(dev, dev->protocol_features);
> +	ret = vhost_user_set_protocol_features(dev, data->protocol_features);
>  	if (ret < 0)
>  		goto err;
> 
> -	if (!(dev->protocol_features & (1ULL << VHOST_USER_PROTOCOL_F_MQ)))
> +	if (!(data->protocol_features & (1ULL << VHOST_USER_PROTOCOL_F_MQ)))
>  		dev->unsupported_features |= (1ull << VIRTIO_NET_F_MQ);
> 
>  	return 0;
> @@ -444,12 +448,13 @@ vhost_user_set_memory_table(struct virtio_user_dev *dev)
>  	struct walk_arg wa;
>  	int fds[VHOST_MEMORY_MAX_NREGIONS];
>  	int ret, fd_num;
> +	struct vhost_user_data *data = dev->backend_data;
>  	struct vhost_user_msg msg = {
>  		.request = VHOST_USER_SET_MEM_TABLE,
>  		.flags = VHOST_USER_VERSION,
>  	};
> 
> -	if (dev->protocol_features & (1ULL << VHOST_USER_PROTOCOL_F_REPLY_ACK))
> +	if (data->protocol_features & (1ULL << VHOST_USER_PROTOCOL_F_REPLY_ACK))
>  		msg.flags |= VHOST_USER_NEED_REPLY_MASK;
> 
>  	wa.region_nr = 0;
> @@ -628,6 +633,7 @@ static int
>  vhost_user_get_status(struct virtio_user_dev *dev, uint8_t *status)
>  {
>  	int ret;
> +	struct vhost_user_data *data = dev->backend_data;
>  	struct vhost_user_msg msg = {
>  		.request = VHOST_USER_GET_STATUS,
>  		.flags = VHOST_USER_VERSION,
> @@ -644,7 +650,7 @@ vhost_user_get_status(struct virtio_user_dev *dev, uint8_t
> *status)
>  	if (!(dev->device_features & (1ULL << VHOST_USER_F_PROTOCOL_FEATURES)))
>  		return -ENOTSUP;
> 
> -	if (!(dev->protocol_features & (1ULL << VHOST_USER_PROTOCOL_F_STATUS)))
> +	if (!(data->protocol_features & (1ULL << VHOST_USER_PROTOCOL_F_STATUS)))
>  		return -ENOTSUP;
> 
>  	ret = vhost_user_write(dev->vhostfd, &msg, NULL, 0);
> @@ -681,6 +687,7 @@ static int
>  vhost_user_set_status(struct virtio_user_dev *dev, uint8_t status)
>  {
>  	int ret;
> +	struct vhost_user_data *data = dev->backend_data;
>  	struct vhost_user_msg msg = {
>  		.request = VHOST_USER_SET_STATUS,
>  		.flags = VHOST_USER_VERSION,
> @@ -699,10 +706,10 @@ vhost_user_set_status(struct virtio_user_dev *dev,
> uint8_t status)
>  	if (!(dev->device_features & (1ULL << VHOST_USER_F_PROTOCOL_FEATURES)))
>  		return -ENOTSUP;
> 
> -	if (!(dev->protocol_features & (1ULL << VHOST_USER_PROTOCOL_F_STATUS)))
> +	if (!(data->protocol_features & (1ULL << VHOST_USER_PROTOCOL_F_STATUS)))
>  		return -ENOTSUP;
> 
> -	if (dev->protocol_features & (1ULL << VHOST_USER_PROTOCOL_F_REPLY_ACK))
> +	if (data->protocol_features & (1ULL << VHOST_USER_PROTOCOL_F_REPLY_ACK))
>  		msg.flags |= VHOST_USER_NEED_REPLY_MASK;
> 
>  	ret = vhost_user_write(dev->vhostfd, &msg, NULL, 0);
> @@ -762,11 +769,22 @@ vhost_user_setup(struct virtio_user_dev *dev)
>  	int fd;
>  	int flag;
>  	struct sockaddr_un un;
> +	struct vhost_user_data *data;
> +
> +	data = malloc(sizeof(*data));
> +	if (!data) {
> +		PMD_DRV_LOG(ERR, "(%s) Failed to allocate Vhost-user data\n", dev-
> >path);
> +		return -1;
> +	}
> +
> +	memset(data, 0, sizeof(*data));
> +
> +	dev->backend_data = data;
> 
>  	fd = socket(AF_UNIX, SOCK_STREAM, 0);
>  	if (fd < 0) {
>  		PMD_DRV_LOG(ERR, "socket() error, %s", strerror(errno));
> -		return -1;
> +		goto err_data;
>  	}
> 
>  	flag = fcntl(fd, F_GETFD);
> @@ -781,18 +799,35 @@ vhost_user_setup(struct virtio_user_dev *dev)
>  		dev->listenfd = fd;
>  		if (virtio_user_start_server(dev, &un) < 0) {
>  			PMD_DRV_LOG(ERR, "virtio-user startup fails in server mode");
> -			close(fd);
> -			return -1;
> +			goto err_socket;
>  		}
>  	} else {
>  		if (connect(fd, (struct sockaddr *)&un, sizeof(un)) < 0) {
>  			PMD_DRV_LOG(ERR, "connect error, %s", strerror(errno));
> -			close(fd);
> -			return -1;
> +			goto err_socket;
>  		}
>  		dev->vhostfd = fd;
>  	}
> 
> +	return 0;
> +
> +err_socket:
> +	close(fd);
> +err_data:
> +	free(data);
> +	dev->backend_data = NULL;
> +
> +	return -1;
> +}
> +
> +static int
> +vhost_user_destroy(struct virtio_user_dev *dev)
> +{
> +	if (dev->backend_data) {
> +		free(dev->backend_data);
> +		dev->backend_data = NULL;
> +	}
> +
>  	return 0;
>  }
> 
> @@ -830,6 +865,7 @@ vhost_user_get_backend_features(uint64_t *features)
> 
>  struct virtio_user_backend_ops virtio_ops_user = {
>  	.setup = vhost_user_setup,
> +	.destroy = vhost_user_destroy,
>  	.get_backend_features = vhost_user_get_backend_features,
>  	.set_owner = vhost_user_set_owner,
>  	.get_features = vhost_user_get_features,
> diff --git a/drivers/net/virtio/virtio_user/vhost_vdpa.c
> b/drivers/net/virtio/virtio_user/vhost_vdpa.c
> index 8d354b298e..f5a8943993 100644
> --- a/drivers/net/virtio/virtio_user/vhost_vdpa.c
> +++ b/drivers/net/virtio/virtio_user/vhost_vdpa.c
> @@ -432,6 +432,12 @@ vhost_vdpa_setup(struct virtio_user_dev *dev)
>  	return 0;
>  }
> 
> +static int
> +vhost_vdpa_destroy(struct virtio_user_dev *dev __rte_unused)
> +{
> +	return 0;
> +}
> +
>  static int
>  vhost_vdpa_enable_queue_pair(struct virtio_user_dev *dev,
>  			       uint16_t pair_idx,
> @@ -467,6 +473,7 @@ vhost_vdpa_get_backend_features(uint64_t *features)
> 
>  struct virtio_user_backend_ops virtio_ops_vdpa = {
>  	.setup = vhost_vdpa_setup,
> +	.destroy = vhost_vdpa_destroy,
>  	.get_backend_features = vhost_vdpa_get_backend_features,
>  	.set_owner = vhost_vdpa_set_owner,
>  	.get_features = vhost_vdpa_get_features,
> diff --git a/drivers/net/virtio/virtio_user/virtio_user_dev.c
> b/drivers/net/virtio/virtio_user/virtio_user_dev.c
> index 2614bcb349..215819d46d 100644
> --- a/drivers/net/virtio/virtio_user/virtio_user_dev.c
> +++ b/drivers/net/virtio/virtio_user/virtio_user_dev.c
> @@ -621,6 +621,8 @@ virtio_user_dev_uninit(struct virtio_user_dev *dev)
> 
>  	if (dev->is_server)
>  		unlink(dev->path);
> +
> +	dev->ops->destroy(dev);
>  }
> 
>  uint8_t
> diff --git a/drivers/net/virtio/virtio_user/virtio_user_dev.h
> b/drivers/net/virtio/virtio_user/virtio_user_dev.h
> index ab62463a5b..7650097b6d 100644
> --- a/drivers/net/virtio/virtio_user/virtio_user_dev.h
> +++ b/drivers/net/virtio/virtio_user/virtio_user_dev.h
> @@ -66,6 +66,8 @@ struct virtio_user_dev {
>  	struct virtio_user_backend_ops *ops;
>  	pthread_mutex_t	mutex;
>  	bool		started;
> +
> +	void *backend_data;
>  };
> 
>  int virtio_user_dev_set_features(struct virtio_user_dev *dev);
> --
> 2.29.2

Reviewed-by: Chenbo Xia <chenbo.xia@intel.com>

  reply	other threads:[~2021-01-22  8:26 UTC|newest]

Thread overview: 86+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-19 21:24 [dpdk-dev] [PATCH v2 00/44] net/virtio: Virtio PMD rework Maxime Coquelin
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 01/44] bus/vdev: add helper to get vdev from eth dev Maxime Coquelin
2021-01-20  0:56   ` Thomas Monjalon
2021-01-25 10:53     ` Maxime Coquelin
2021-01-25 11:04       ` Thomas Monjalon
2021-01-21  8:58   ` Xia, Chenbo
2021-01-25 14:51     ` Maxime Coquelin
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 02/44] bus/vdev: add driver IOVA VA mode requirement Maxime Coquelin
2021-01-20 15:32   ` David Marchand
2021-01-20 17:47     ` Maxime Coquelin
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 03/44] net/virtio: fix getting old status on reconnect Maxime Coquelin
2021-01-21  7:12   ` Xia, Chenbo
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 04/44] net/virtio: introduce Virtio bus type Maxime Coquelin
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 05/44] net/virtio: refactor virtio-user device Maxime Coquelin
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 06/44] net/virtio: introduce PCI device metadata Maxime Coquelin
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 07/44] net/virtio: move PCI device init in dedicated file Maxime Coquelin
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 08/44] net/virtio: move PCI specific dev init to PCI ethdev init Maxime Coquelin
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 09/44] net/virtio: move MSIX detection to PCI ethdev Maxime Coquelin
2021-01-21  7:12   ` Xia, Chenbo
2021-01-25 12:41     ` Maxime Coquelin
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 10/44] net/virtio: force IOVA as VA mode for Virtio-user Maxime Coquelin
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 11/44] net/virtio: store PCI type in Virtio device metadata Maxime Coquelin
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 12/44] net/virtio: add callback for device closing Maxime Coquelin
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 13/44] net/virtio: validate features at bus level Maxime Coquelin
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 14/44] net/virtio: remove bus type enum Maxime Coquelin
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 15/44] net/virtio: move PCI-specific fields to PCI device Maxime Coquelin
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 16/44] net/virtio: pack virtio HW struct Maxime Coquelin
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 17/44] net/virtio: move legacy IO to Virtio PCI Maxime Coquelin
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 18/44] net/virtio: introduce generic virtio header Maxime Coquelin
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 19/44] net/virtio: move features definition to generic header Maxime Coquelin
2021-01-21  6:47   ` Xia, Chenbo
2021-01-25 12:35     ` Maxime Coquelin
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 20/44] net/virtio: move virtqueue defines in " Maxime Coquelin
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 21/44] net/virtio: move config definitions to " Maxime Coquelin
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 22/44] net/virtio: make interrupt handling more generic Maxime Coquelin
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 23/44] net/virtio: move vring alignment to generic header Maxime Coquelin
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 24/44] net/virtio: remove last PCI refs in non-PCI code Maxime Coquelin
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 25/44] net/virtio: make Vhost-user req sender consistent Maxime Coquelin
2021-01-21  8:50   ` Xia, Chenbo
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 26/44] net/virtio: add Virtio-user ops to set owner Maxime Coquelin
2021-01-22  3:27   ` Xia, Chenbo
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 27/44] net/virtio: add Virtio-user features ops Maxime Coquelin
2021-01-22  7:25   ` Xia, Chenbo
2021-01-25 14:53     ` Maxime Coquelin
2021-01-22  8:46   ` Xia, Chenbo
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 28/44] net/virtio: add Virtio-user protocol " Maxime Coquelin
2021-01-22  7:27   ` Xia, Chenbo
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 29/44] net/virtio: add Virtio-user memory tables ops Maxime Coquelin
2021-01-22  7:34   ` Xia, Chenbo
2021-01-25 14:56     ` Maxime Coquelin
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 30/44] net/virtio: add Virtio-user vring setting ops Maxime Coquelin
2021-01-22  7:49   ` Xia, Chenbo
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 31/44] net/virtio: add Virtio-user vring file ops Maxime Coquelin
2021-01-22  8:01   ` Xia, Chenbo
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 32/44] net/virtio: add Virtio-user vring address ops Maxime Coquelin
2021-01-22  8:02   ` Xia, Chenbo
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 33/44] net/virtio: add Virtio-user status ops Maxime Coquelin
2021-01-22  8:02   ` Xia, Chenbo
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 34/44] net/virtio: remove useless request ops Maxime Coquelin
2021-01-22  8:10   ` Xia, Chenbo
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 35/44] net/virtio: improve Virtio-user errors handling Maxime Coquelin
2021-01-22  8:10   ` Xia, Chenbo
2021-01-19 21:24 ` [dpdk-dev] [PATCH v2 36/44] net/virtio: move Vhost-user reqs to Vhost-user backend Maxime Coquelin
2021-01-21  8:56   ` Xia, Chenbo
2021-01-25 14:50     ` Maxime Coquelin
2021-01-19 21:25 ` [dpdk-dev] [PATCH v2 37/44] net/virtio: make server mode blocking Maxime Coquelin
2021-01-22  8:19   ` Xia, Chenbo
2021-01-19 21:25 ` [dpdk-dev] [PATCH v2 38/44] net/virtio: move protocol features to Vhost-user Maxime Coquelin
2021-01-22  8:20   ` Xia, Chenbo
2021-01-19 21:25 ` [dpdk-dev] [PATCH v2 39/44] net/virtio: introduce backend data Maxime Coquelin
2021-01-22  8:26   ` Xia, Chenbo [this message]
2021-01-19 21:25 ` [dpdk-dev] [PATCH v2 40/44] net/virtio: move Vhost-user specifics to its backend Maxime Coquelin
2021-01-22  8:49   ` Xia, Chenbo
2021-01-19 21:25 ` [dpdk-dev] [PATCH v2 41/44] net/virtio: move Vhost-kernel data " Maxime Coquelin
2021-01-22  8:55   ` Xia, Chenbo
2021-01-25 14:59     ` Maxime Coquelin
2021-01-19 21:25 ` [dpdk-dev] [PATCH v2 42/44] net/virtio: move Vhost-vDPA " Maxime Coquelin
2021-01-22  9:06   ` Xia, Chenbo
2021-01-25 15:02     ` Maxime Coquelin
2021-01-19 21:25 ` [dpdk-dev] [PATCH v2 43/44] net/virtio: improve Vhost-user error logging Maxime Coquelin
2021-01-22  9:11   ` Xia, Chenbo
2021-01-25 15:04     ` Maxime Coquelin
2021-01-26  6:10       ` Xia, Chenbo
2021-01-19 21:25 ` [dpdk-dev] [PATCH v2 44/44] net/virtio: handle Virtio-user setup failure properly Maxime Coquelin
2021-01-22  9:24   ` Xia, Chenbo
2021-01-25 16:16     ` Maxime Coquelin

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	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 dev dev/ https://inbox.dpdk.org/dev \
		dev@dpdk.org
	public-inbox-index dev

Example config snippet for mirrors.
Newsgroup available over NNTP:
	nntp://inbox.dpdk.org/inbox.dpdk.dev


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git