RE: [PATCH net-next 07/14] vsock: handle buffer_size sockopts in the core

Jorgen Hansen
2019-10-30T15:08:29Z

> From: Stefano Garzarella [mailto:sgarzare@redhat.com]
> Sent: Wednesday, October 23, 2019 11:56 AM
> Subject: [PATCH net-next 07/14] vsock: handle buffer_size sockopts in the
> core
>
> virtio_transport and vmci_transport handle the buffer_size sockopts in a
> very similar way.
>
> In order to support multiple transports, this patch moves this handling in the
> core to allow the user to change the options also if the socket is not yet
> assigned to any transport.
>
> This patch also adds the '.notify_buffer_size' callback in the 'struct
> virtio_transport' in order to inform the transport, when the buffer_size is
> changed by the user. It is also useful to limit the 'buffer_size' requested (e.g.
> virtio transports).
>
> Acked-by: Dexuan Cui <decui@microsoft.com>
> Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
> ---
> RFC -> v1:
> - changed .notify_buffer_size return to void (Stefan)
> - documented that .notify_buffer_size is called with sk_lock held (Stefan)
> ---
> drivers/vhost/vsock.c | 7 +-
> include/linux/virtio_vsock.h | 15 +----
> include/net/af_vsock.h | 15 ++---
> net/vmw_vsock/af_vsock.c | 43 ++++++++++---
> net/vmw_vsock/hyperv_transport.c | 36 -----------
> net/vmw_vsock/virtio_transport.c | 8 +--
> net/vmw_vsock/virtio_transport_common.c | 79 ++++-------------------
> net/vmw_vsock/vmci_transport.c | 86 +++----------------------
> net/vmw_vsock/vmci_transport.h | 3 -
> 9 files changed, 65 insertions(+), 227 deletions(-)
>
> diff --git a/drivers/vhost/vsock.c b/drivers/vhost/vsock.c index
> 92ab3852c954..6d7e4f022748 100644
> --- a/drivers/vhost/vsock.c
> +++ b/drivers/vhost/vsock.c
> @@ -418,13 +418,8 @@ static struct virtio_transport vhost_transport = {
> .notify_send_pre_block =
> virtio_transport_notify_send_pre_block,
> .notify_send_pre_enqueue =
> virtio_transport_notify_send_pre_enqueue,
> .notify_send_post_enqueue =
> virtio_transport_notify_send_post_enqueue,
> + .notify_buffer_size = virtio_transport_notify_buffer_size,
>
> - .set_buffer_size = virtio_transport_set_buffer_size,
> - .set_min_buffer_size =
> virtio_transport_set_min_buffer_size,
> - .set_max_buffer_size =
> virtio_transport_set_max_buffer_size,
> - .get_buffer_size = virtio_transport_get_buffer_size,
> - .get_min_buffer_size =
> virtio_transport_get_min_buffer_size,
> - .get_max_buffer_size =
> virtio_transport_get_max_buffer_size,
> },
>
> .send_pkt = vhost_transport_send_pkt,
> diff --git a/include/linux/virtio_vsock.h b/include/linux/virtio_vsock.h index
> 96d8132acbd7..b79befd2a5a4 100644
> --- a/include/linux/virtio_vsock.h
> +++ b/include/linux/virtio_vsock.h
> @@ -7,9 +7,6 @@
> #include <net/sock.h>
> #include <net/af_vsock.h>
>
> -#define VIRTIO_VSOCK_DEFAULT_MIN_BUF_SIZE 128
> -#define VIRTIO_VSOCK_DEFAULT_BUF_SIZE (1024 * 256)
> -#define VIRTIO_VSOCK_DEFAULT_MAX_BUF_SIZE (1024 * 256)
> #define VIRTIO_VSOCK_DEFAULT_RX_BUF_SIZE (1024 * 4)
> #define VIRTIO_VSOCK_MAX_BUF_SIZE 0xFFFFFFFFUL
> #define VIRTIO_VSOCK_MAX_PKT_BUF_SIZE (1024 * 64)
> @@ -25,11 +22,6 @@ enum {
> struct virtio_vsock_sock {
> struct vsock_sock *vsk;
>
> - /* Protected by lock_sock(sk_vsock(trans->vsk)) */
> - u32 buf_size;
> - u32 buf_size_min;
> - u32 buf_size_max;
> -
> spinlock_t tx_lock;
> spinlock_t rx_lock;
>
> @@ -93,12 +85,6 @@ s64 virtio_transport_stream_has_space(struct
> vsock_sock *vsk);
>
> int virtio_transport_do_socket_init(struct vsock_sock *vsk,
> struct vsock_sock *psk);
> -u64 virtio_transport_get_buffer_size(struct vsock_sock *vsk);
> -u64 virtio_transport_get_min_buffer_size(struct vsock_sock *vsk);
> -u64 virtio_transport_get_max_buffer_size(struct vsock_sock *vsk); -void
> virtio_transport_set_buffer_size(struct vsock_sock *vsk, u64 val); -void
> virtio_transport_set_min_buffer_size(struct vsock_sock *vsk, u64 val); -void
> virtio_transport_set_max_buffer_size(struct vsock_sock *vs, u64 val); int
> virtio_transport_notify_poll_in(struct vsock_sock *vsk,
> size_t target,
> @@ -125,6 +111,7 @@ int
> virtio_transport_notify_send_pre_enqueue(struct vsock_sock *vsk,
> struct vsock_transport_send_notify_data *data); int
> virtio_transport_notify_send_post_enqueue(struct vsock_sock *vsk,
> ssize_t written, struct vsock_transport_send_notify_data *data);
> +void virtio_transport_notify_buffer_size(struct vsock_sock *vsk, u64
> +*val);
>
> u64 virtio_transport_stream_rcvhiwat(struct vsock_sock *vsk); bool
> virtio_transport_stream_is_active(struct vsock_sock *vsk); diff --git
> a/include/net/af_vsock.h b/include/net/af_vsock.h index
> 2ca67d048de4..4b5d16840fd4 100644
> --- a/include/net/af_vsock.h
> +++ b/include/net/af_vsock.h
> @@ -65,6 +65,11 @@ struct vsock_sock {
> bool sent_request;
> bool ignore_connecting_rst;
>
> + /* Protected by lock_sock(sk) */
> + u64 buffer_size;
> + u64 buffer_min_size;
> + u64 buffer_max_size;
> +
> /* Private to transport. */
> void *trans;
> };
> @@ -140,18 +145,12 @@ struct vsock_transport {
> struct vsock_transport_send_notify_data *);
> int (*notify_send_post_enqueue)(struct vsock_sock *, ssize_t,
> struct vsock_transport_send_notify_data *);
> + /* sk_lock held by the caller */
> + void (*notify_buffer_size)(struct vsock_sock *, u64 *);
>
> /* Shutdown. */
> int (*shutdown)(struct vsock_sock *, int);
>
> - /* Buffer sizes. */
> - void (*set_buffer_size)(struct vsock_sock *, u64);
> - void (*set_min_buffer_size)(struct vsock_sock *, u64);
> - void (*set_max_buffer_size)(struct vsock_sock *, u64);
> - u64 (*get_buffer_size)(struct vsock_sock *);
> - u64 (*get_min_buffer_size)(struct vsock_sock *);
> - u64 (*get_max_buffer_size)(struct vsock_sock *);
> -
> /* Addressing. */
> u32 (*get_local_cid)(void);
> };
> diff --git a/net/vmw_vsock/af_vsock.c b/net/vmw_vsock/af_vsock.c index
> eaea159006c8..90ac46ea12ef 100644
> --- a/net/vmw_vsock/af_vsock.c
> +++ b/net/vmw_vsock/af_vsock.c
> @@ -126,6 +126,10 @@ static struct proto vsock_proto = {
> */
> #define VSOCK_DEFAULT_CONNECT_TIMEOUT (2 * HZ)
>
> +#define VSOCK_DEFAULT_BUFFER_SIZE (1024 * 256)
> +#define VSOCK_DEFAULT_BUFFER_MAX_SIZE (1024 * 256) #define
> +VSOCK_DEFAULT_BUFFER_MIN_SIZE 128
> +
> static const struct vsock_transport *transport_single; static
> DEFINE_MUTEX(vsock_register_mutex);
>
> @@ -613,10 +617,16 @@ struct sock *__vsock_create(struct net *net,
> vsk->trusted = psk->trusted;
> vsk->owner = get_cred(psk->owner);
> vsk->connect_timeout = psk->connect_timeout;
> + vsk->buffer_size = psk->buffer_size;
> + vsk->buffer_min_size = psk->buffer_min_size;
> + vsk->buffer_max_size = psk->buffer_max_size;
> } else {
> vsk->trusted = capable(CAP_NET_ADMIN);
> vsk->owner = get_current_cred();
> vsk->connect_timeout =
> VSOCK_DEFAULT_CONNECT_TIMEOUT;
> + vsk->buffer_size = VSOCK_DEFAULT_BUFFER_SIZE;
> + vsk->buffer_min_size =
> VSOCK_DEFAULT_BUFFER_MIN_SIZE;
> + vsk->buffer_max_size =
> VSOCK_DEFAULT_BUFFER_MAX_SIZE;
> }
>
> if (vsk->transport->init(vsk, psk) < 0) { @@ -1368,6 +1378,23 @@
> static int vsock_listen(struct socket *sock, int backlog)
> return err;
> }
>
> +static void vsock_update_buffer_size(struct vsock_sock *vsk,
> + const struct vsock_transport *transport,
> + u64 val)
> +{
> + if (val > vsk->buffer_max_size)
> + val = vsk->buffer_max_size;
> +
> + if (val < vsk->buffer_min_size)
> + val = vsk->buffer_min_size;
> +
> + if (val != vsk->buffer_size &&
> + transport && transport->notify_buffer_size)
> + transport->notify_buffer_size(vsk, &val);
> +
> + vsk->buffer_size = val;
> +}
> +
> static int vsock_stream_setsockopt(struct socket *sock,
> int level,
> int optname,
> @@ -1405,17 +1432,19 @@ static int vsock_stream_setsockopt(struct socket
> *sock,
> switch (optname) {
> case SO_VM_SOCKETS_BUFFER_SIZE:
> COPY_IN(val);
> - transport->set_buffer_size(vsk, val);
> + vsock_update_buffer_size(vsk, transport, val);
> break;
>
> case SO_VM_SOCKETS_BUFFER_MAX_SIZE:
> COPY_IN(val);
> - transport->set_max_buffer_size(vsk, val);
> + vsk->buffer_max_size = val;
> + vsock_update_buffer_size(vsk, transport, vsk->buffer_size);
> break;
>
> case SO_VM_SOCKETS_BUFFER_MIN_SIZE:
> COPY_IN(val);
> - transport->set_min_buffer_size(vsk, val);
> + vsk->buffer_min_size = val;
> + vsock_update_buffer_size(vsk, transport, vsk->buffer_size);
> break;
>
> case SO_VM_SOCKETS_CONNECT_TIMEOUT: {
> @@ -1456,7 +1485,6 @@ static int vsock_stream_getsockopt(struct socket
> *sock,
> int len;
> struct sock *sk;
> struct vsock_sock *vsk;
> - const struct vsock_transport *transport;
> u64 val;
>
> if (level != AF_VSOCK)
> @@ -1480,21 +1508,20 @@ static int vsock_stream_getsockopt(struct socket
> *sock,
> err = 0;
> sk = sock->sk;
> vsk = vsock_sk(sk);
> - transport = vsk->transport;
>
> switch (optname) {
> case SO_VM_SOCKETS_BUFFER_SIZE:
> - val = transport->get_buffer_size(vsk);
> + val = vsk->buffer_size;
> COPY_OUT(val);
> break;
>
> case SO_VM_SOCKETS_BUFFER_MAX_SIZE:
> - val = transport->get_max_buffer_size(vsk);
> + val = vsk->buffer_max_size;
> COPY_OUT(val);
> break;
>
> case SO_VM_SOCKETS_BUFFER_MIN_SIZE:
> - val = transport->get_min_buffer_size(vsk);
> + val = vsk->buffer_min_size;
> COPY_OUT(val);
> break;
>
> diff --git a/net/vmw_vsock/hyperv_transport.c
> b/net/vmw_vsock/hyperv_transport.c
> index bef8772116ec..d62297a62ca6 100644
> --- a/net/vmw_vsock/hyperv_transport.c
> +++ b/net/vmw_vsock/hyperv_transport.c
> @@ -845,36 +845,6 @@ int hvs_notify_send_post_enqueue(struct
> vsock_sock *vsk, ssize_t written,
> return 0;
> }
>
> -static void hvs_set_buffer_size(struct vsock_sock *vsk, u64 val) -{
> - /* Ignored. */
> -}
> -
> -static void hvs_set_min_buffer_size(struct vsock_sock *vsk, u64 val) -{
> - /* Ignored. */
> -}
> -
> -static void hvs_set_max_buffer_size(struct vsock_sock *vsk, u64 val) -{
> - /* Ignored. */
> -}
> -
> -static u64 hvs_get_buffer_size(struct vsock_sock *vsk) -{
> - return -ENOPROTOOPT;
> -}
> -
> -static u64 hvs_get_min_buffer_size(struct vsock_sock *vsk) -{
> - return -ENOPROTOOPT;
> -}
> -
> -static u64 hvs_get_max_buffer_size(struct vsock_sock *vsk) -{
> - return -ENOPROTOOPT;
> -}
> -
> static struct vsock_transport hvs_transport = {
> .get_local_cid = hvs_get_local_cid,
>
> @@ -908,12 +878,6 @@ static struct vsock_transport hvs_transport = {
> .notify_send_pre_enqueue = hvs_notify_send_pre_enqueue,
> .notify_send_post_enqueue = hvs_notify_send_post_enqueue,
>
> - .set_buffer_size = hvs_set_buffer_size,
> - .set_min_buffer_size = hvs_set_min_buffer_size,
> - .set_max_buffer_size = hvs_set_max_buffer_size,
> - .get_buffer_size = hvs_get_buffer_size,
> - .get_min_buffer_size = hvs_get_min_buffer_size,
> - .get_max_buffer_size = hvs_get_max_buffer_size,
> };
>
> static int hvs_probe(struct hv_device *hdev, diff --git
> a/net/vmw_vsock/virtio_transport.c b/net/vmw_vsock/virtio_transport.c
> index 3756f0857946..fb1fc7760e8c 100644
> --- a/net/vmw_vsock/virtio_transport.c
> +++ b/net/vmw_vsock/virtio_transport.c
> @@ -494,13 +494,7 @@ static struct virtio_transport virtio_transport = {
> .notify_send_pre_block =
> virtio_transport_notify_send_pre_block,
> .notify_send_pre_enqueue =
> virtio_transport_notify_send_pre_enqueue,
> .notify_send_post_enqueue =
> virtio_transport_notify_send_post_enqueue,
> -
> - .set_buffer_size = virtio_transport_set_buffer_size,
> - .set_min_buffer_size =
> virtio_transport_set_min_buffer_size,
> - .set_max_buffer_size =
> virtio_transport_set_max_buffer_size,
> - .get_buffer_size = virtio_transport_get_buffer_size,
> - .get_min_buffer_size =
> virtio_transport_get_min_buffer_size,
> - .get_max_buffer_size =
> virtio_transport_get_max_buffer_size,
> + .notify_buffer_size = virtio_transport_notify_buffer_size,
> },
>
> .send_pkt = virtio_transport_send_pkt, diff --git
> a/net/vmw_vsock/virtio_transport_common.c
> b/net/vmw_vsock/virtio_transport_common.c
> index 37a1c7e7c7fe..b2a310dfa158 100644
> --- a/net/vmw_vsock/virtio_transport_common.c
> +++ b/net/vmw_vsock/virtio_transport_common.c
> @@ -456,17 +456,13 @@ int virtio_transport_do_socket_init(struct
> vsock_sock *vsk,
> if (psk) {
> struct virtio_vsock_sock *ptrans = psk->trans;
>
> - vvs->buf_size = ptrans->buf_size;
> - vvs->buf_size_min = ptrans->buf_size_min;
> - vvs->buf_size_max = ptrans->buf_size_max;
> vvs->peer_buf_alloc = ptrans->peer_buf_alloc;
> - } else {
> - vvs->buf_size = VIRTIO_VSOCK_DEFAULT_BUF_SIZE;
> - vvs->buf_size_min =
> VIRTIO_VSOCK_DEFAULT_MIN_BUF_SIZE;
> - vvs->buf_size_max =
> VIRTIO_VSOCK_DEFAULT_MAX_BUF_SIZE;
> }
>
> - vvs->buf_alloc = vvs->buf_size;
> + if (vsk->buffer_size > VIRTIO_VSOCK_MAX_BUF_SIZE)
> + vsk->buffer_size = VIRTIO_VSOCK_MAX_BUF_SIZE;
> +
> + vvs->buf_alloc = vsk->buffer_size;
>
> spin_lock_init(&vvs->rx_lock);
> spin_lock_init(&vvs->tx_lock);
> @@ -476,71 +472,20 @@ int virtio_transport_do_socket_init(struct
> vsock_sock *vsk, } EXPORT_SYMBOL_GPL(virtio_transport_do_socket_init);
>
> -u64 virtio_transport_get_buffer_size(struct vsock_sock *vsk) -{
> - struct virtio_vsock_sock *vvs = vsk->trans;
> -
> - return vvs->buf_size;
> -}
> -EXPORT_SYMBOL_GPL(virtio_transport_get_buffer_size);
> -
> -u64 virtio_transport_get_min_buffer_size(struct vsock_sock *vsk)
> +/* sk_lock held by the caller */
> +void virtio_transport_notify_buffer_size(struct vsock_sock *vsk, u64
> +*val)
> {
> struct virtio_vsock_sock *vvs = vsk->trans;
>
> - return vvs->buf_size_min;
> -}
> -EXPORT_SYMBOL_GPL(virtio_transport_get_min_buffer_size);
> -
> -u64 virtio_transport_get_max_buffer_size(struct vsock_sock *vsk) -{
> - struct virtio_vsock_sock *vvs = vsk->trans;
> -
> - return vvs->buf_size_max;
> -}
> -EXPORT_SYMBOL_GPL(virtio_transport_get_max_buffer_size);
> -
> -void virtio_transport_set_buffer_size(struct vsock_sock *vsk, u64 val) -{
> - struct virtio_vsock_sock *vvs = vsk->trans;
> + if (*val > VIRTIO_VSOCK_MAX_BUF_SIZE)
> + *val = VIRTIO_VSOCK_MAX_BUF_SIZE;
>
> - if (val > VIRTIO_VSOCK_MAX_BUF_SIZE)
> - val = VIRTIO_VSOCK_MAX_BUF_SIZE;
> - if (val < vvs->buf_size_min)
> - vvs->buf_size_min = val;
> - if (val > vvs->buf_size_max)
> - vvs->buf_size_max = val;
> - vvs->buf_size = val;
> - vvs->buf_alloc = val;
> + vvs->buf_alloc = *val;
>
> virtio_transport_send_credit_update(vsk,
> VIRTIO_VSOCK_TYPE_STREAM,
> NULL);
> }
> -EXPORT_SYMBOL_GPL(virtio_transport_set_buffer_size);
> -
> -void virtio_transport_set_min_buffer_size(struct vsock_sock *vsk, u64 val)
> -{
> - struct virtio_vsock_sock *vvs = vsk->trans;
> -
> - if (val > VIRTIO_VSOCK_MAX_BUF_SIZE)
> - val = VIRTIO_VSOCK_MAX_BUF_SIZE;
> - if (val > vvs->buf_size)
> - vvs->buf_size = val;
> - vvs->buf_size_min = val;
> -}
> -EXPORT_SYMBOL_GPL(virtio_transport_set_min_buffer_size);
> -
> -void virtio_transport_set_max_buffer_size(struct vsock_sock *vsk, u64 val)
> -{
> - struct virtio_vsock_sock *vvs = vsk->trans;
> -
> - if (val > VIRTIO_VSOCK_MAX_BUF_SIZE)
> - val = VIRTIO_VSOCK_MAX_BUF_SIZE;
> - if (val < vvs->buf_size)
> - vvs->buf_size = val;
> - vvs->buf_size_max = val;
> -}
> -EXPORT_SYMBOL_GPL(virtio_transport_set_max_buffer_size);
> +EXPORT_SYMBOL_GPL(virtio_transport_notify_buffer_size);
>
> int
> virtio_transport_notify_poll_in(struct vsock_sock *vsk, @@ -632,9 +577,7
> @@ EXPORT_SYMBOL_GPL(virtio_transport_notify_send_post_enqueue);
>
> u64 virtio_transport_stream_rcvhiwat(struct vsock_sock *vsk) {
> - struct virtio_vsock_sock *vvs = vsk->trans;
> -
> - return vvs->buf_size;
> + return vsk->buffer_size;
> }
> EXPORT_SYMBOL_GPL(virtio_transport_stream_rcvhiwat);

While the VMCI transport uses a transport local consumer_size for stream_rcvhiwat,
that consumer_size is always the same as buffer_size (a vmci queue pair allows the
producer and consumer queues to be of different sizes, but vsock doesn't use that).
So we could move the stream_rcvhiwat code to the common code as well, and just
use buffer_size, if that simplifies things.

> diff --git a/net/vmw_vsock/vmci_transport.c
> b/net/vmw_vsock/vmci_transport.c index f8e3131ac480..8290d37b6587
> 100644
> --- a/net/vmw_vsock/vmci_transport.c
> +++ b/net/vmw_vsock/vmci_transport.c
> @@ -74,10 +74,6 @@ static u32 vmci_transport_qp_resumed_sub_id =
> VMCI_INVALID_ID;
>
> static int PROTOCOL_OVERRIDE = -1;
>
> -#define VMCI_TRANSPORT_DEFAULT_QP_SIZE_MIN 128
> -#define VMCI_TRANSPORT_DEFAULT_QP_SIZE 262144
> -#define VMCI_TRANSPORT_DEFAULT_QP_SIZE_MAX 262144
> -
> /* Helper function to convert from a VMCI error code to a VSock error code.
> */
>
> static s32 vmci_transport_error_to_vsock_error(s32 vmci_error) @@ -
> 1025,11 +1021,11 @@ static int vmci_transport_recv_listen(struct sock *sk,
> /* If the proposed size fits within our min/max, accept it. Otherwise
> * propose our own size.
> */
> - if (pkt->u.size >= vmci_trans(vpending)->queue_pair_min_size &&
> - pkt->u.size <= vmci_trans(vpending)->queue_pair_max_size) {
> + if (pkt->u.size >= vpending->buffer_min_size &&
> + pkt->u.size <= vpending->buffer_max_size) {
> qp_size = pkt->u.size;
> } else {
> - qp_size = vmci_trans(vpending)->queue_pair_size;
> + qp_size = vpending->buffer_size;
> }
>
> /* Figure out if we are using old or new requests based on the @@ -
> 1098,7 +1094,7 @@ static int vmci_transport_recv_listen(struct sock *sk,
> pending->sk_state = TCP_SYN_SENT;
> vmci_trans(vpending)->produce_size =
> vmci_trans(vpending)->consume_size = qp_size;
> - vmci_trans(vpending)->queue_pair_size = qp_size;
> + vpending->buffer_size = qp_size;
>
> vmci_trans(vpending)->notify_ops->process_request(pending);
>
> @@ -1392,8 +1388,8 @@ static int
> vmci_transport_recv_connecting_client_negotiate(
> vsk->ignore_connecting_rst = false;
>
> /* Verify that we're OK with the proposed queue pair size */
> - if (pkt->u.size < vmci_trans(vsk)->queue_pair_min_size ||
> - pkt->u.size > vmci_trans(vsk)->queue_pair_max_size) {
> + if (pkt->u.size < vsk->buffer_min_size ||
> + pkt->u.size > vsk->buffer_max_size) {
> err = -EINVAL;
> goto destroy;
> }
> @@ -1498,8 +1494,7 @@
> vmci_transport_recv_connecting_client_invalid(struct sock *sk,
> vsk->sent_request = false;
> vsk->ignore_connecting_rst = true;
>
> - err = vmci_transport_send_conn_request(
> - sk, vmci_trans(vsk)->queue_pair_size);
> + err = vmci_transport_send_conn_request(sk, vsk-
> >buffer_size);
> if (err < 0)
> err = vmci_transport_error_to_vsock_error(err);
> else
> @@ -1583,21 +1578,6 @@ static int vmci_transport_socket_init(struct
> vsock_sock *vsk,
> INIT_LIST_HEAD(&vmci_trans(vsk)->elem);
> vmci_trans(vsk)->sk = &vsk->sk;
> spin_lock_init(&vmci_trans(vsk)->lock);
> - if (psk) {
> - vmci_trans(vsk)->queue_pair_size =
> - vmci_trans(psk)->queue_pair_size;
> - vmci_trans(vsk)->queue_pair_min_size =
> - vmci_trans(psk)->queue_pair_min_size;
> - vmci_trans(vsk)->queue_pair_max_size =
> - vmci_trans(psk)->queue_pair_max_size;
> - } else {
> - vmci_trans(vsk)->queue_pair_size =
> - VMCI_TRANSPORT_DEFAULT_QP_SIZE;
> - vmci_trans(vsk)->queue_pair_min_size =
> - VMCI_TRANSPORT_DEFAULT_QP_SIZE_MIN;
> - vmci_trans(vsk)->queue_pair_max_size =
> - VMCI_TRANSPORT_DEFAULT_QP_SIZE_MAX;
> - }
>
> return 0;
> }
> @@ -1813,8 +1793,7 @@ static int vmci_transport_connect(struct
> vsock_sock *vsk)
>
> if (vmci_transport_old_proto_override(&old_pkt_proto) &&
> old_pkt_proto) {
> - err = vmci_transport_send_conn_request(
> - sk, vmci_trans(vsk)->queue_pair_size);
> + err = vmci_transport_send_conn_request(sk, vsk-
> >buffer_size);
> if (err < 0) {
> sk->sk_state = TCP_CLOSE;
> return err;
> @@ -1822,8 +1801,7 @@ static int vmci_transport_connect(struct
> vsock_sock *vsk)
> } else {
> int supported_proto_versions =
> vmci_transport_new_proto_supported_versions();
> - err = vmci_transport_send_conn_request2(
> - sk, vmci_trans(vsk)->queue_pair_size,
> + err = vmci_transport_send_conn_request2(sk, vsk-
> >buffer_size,
> supported_proto_versions);
> if (err < 0) {
> sk->sk_state = TCP_CLOSE;
> @@ -1876,46 +1854,6 @@ static bool
> vmci_transport_stream_is_active(struct vsock_sock *vsk)
> return !vmci_handle_is_invalid(vmci_trans(vsk)->qp_handle);
> }
>
> -static u64 vmci_transport_get_buffer_size(struct vsock_sock *vsk) -{
> - return vmci_trans(vsk)->queue_pair_size;
> -}
> -
> -static u64 vmci_transport_get_min_buffer_size(struct vsock_sock *vsk) -{
> - return vmci_trans(vsk)->queue_pair_min_size;
> -}
> -
> -static u64 vmci_transport_get_max_buffer_size(struct vsock_sock *vsk) -{
> - return vmci_trans(vsk)->queue_pair_max_size;
> -}
> -
> -static void vmci_transport_set_buffer_size(struct vsock_sock *vsk, u64 val)
> -{
> - if (val < vmci_trans(vsk)->queue_pair_min_size)
> - vmci_trans(vsk)->queue_pair_min_size = val;
> - if (val > vmci_trans(vsk)->queue_pair_max_size)
> - vmci_trans(vsk)->queue_pair_max_size = val;
> - vmci_trans(vsk)->queue_pair_size = val;
> -}
> -
> -static void vmci_transport_set_min_buffer_size(struct vsock_sock *vsk,
> - u64 val)
> -{
> - if (val > vmci_trans(vsk)->queue_pair_size)
> - vmci_trans(vsk)->queue_pair_size = val;
> - vmci_trans(vsk)->queue_pair_min_size = val;
> -}
> -
> -static void vmci_transport_set_max_buffer_size(struct vsock_sock *vsk,
> - u64 val)
> -{
> - if (val < vmci_trans(vsk)->queue_pair_size)
> - vmci_trans(vsk)->queue_pair_size = val;
> - vmci_trans(vsk)->queue_pair_max_size = val;
> -}
> -
> static int vmci_transport_notify_poll_in(
> struct vsock_sock *vsk,
> size_t target,
> @@ -2098,12 +2036,6 @@ static const struct vsock_transport vmci_transport
> = {
> .notify_send_pre_enqueue =
> vmci_transport_notify_send_pre_enqueue,
> .notify_send_post_enqueue =
> vmci_transport_notify_send_post_enqueue,
> .shutdown = vmci_transport_shutdown,
> - .set_buffer_size = vmci_transport_set_buffer_size,
> - .set_min_buffer_size = vmci_transport_set_min_buffer_size,
> - .set_max_buffer_size = vmci_transport_set_max_buffer_size,
> - .get_buffer_size = vmci_transport_get_buffer_size,
> - .get_min_buffer_size = vmci_transport_get_min_buffer_size,
> - .get_max_buffer_size = vmci_transport_get_max_buffer_size,
> .get_local_cid = vmci_transport_get_local_cid, };
>
> diff --git a/net/vmw_vsock/vmci_transport.h
> b/net/vmw_vsock/vmci_transport.h index 1ca1e8640b31..b7b072194282
> 100644
> --- a/net/vmw_vsock/vmci_transport.h
> +++ b/net/vmw_vsock/vmci_transport.h
> @@ -108,9 +108,6 @@ struct vmci_transport {
> struct vmci_qp *qpair;
> u64 produce_size;
> u64 consume_size;
> - u64 queue_pair_size;
> - u64 queue_pair_min_size;
> - u64 queue_pair_max_size;
> u32 detach_sub_id;
> union vmci_transport_notify notify;
> const struct vmci_transport_notify_ops *notify_ops;
> --
> 2.21.0

Reviewed-by: Jorgen Hansen <jhansen@vmware.com>