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[PATCH v7 05/12] vhost_net: Add NetClientInfo prepare callback
From: |
Eugenio Pérez |
Subject: |
[PATCH v7 05/12] vhost_net: Add NetClientInfo prepare callback |
Date: |
Thu, 4 Aug 2022 20:28:45 +0200 |
This is used by the backend to perform actions before the device is
started.
In particular, vdpa net use it to map CVQ buffers to the device, so it
can send control commands using them.
Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
---
include/net/net.h | 2 ++
hw/net/vhost_net.c | 7 +++++++
2 files changed, 9 insertions(+)
diff --git a/include/net/net.h b/include/net/net.h
index 523136c7ac..3416bb3d46 100644
--- a/include/net/net.h
+++ b/include/net/net.h
@@ -44,6 +44,7 @@ typedef struct NICConf {
typedef void (NetPoll)(NetClientState *, bool enable);
typedef bool (NetCanReceive)(NetClientState *);
+typedef int (NetPrepare)(NetClientState *);
typedef ssize_t (NetReceive)(NetClientState *, const uint8_t *, size_t);
typedef ssize_t (NetReceiveIOV)(NetClientState *, const struct iovec *, int);
typedef void (NetCleanup) (NetClientState *);
@@ -71,6 +72,7 @@ typedef struct NetClientInfo {
NetReceive *receive_raw;
NetReceiveIOV *receive_iov;
NetCanReceive *can_receive;
+ NetPrepare *prepare;
NetCleanup *cleanup;
LinkStatusChanged *link_status_changed;
QueryRxFilter *query_rx_filter;
diff --git a/hw/net/vhost_net.c b/hw/net/vhost_net.c
index ccac5b7a64..e1150d7532 100644
--- a/hw/net/vhost_net.c
+++ b/hw/net/vhost_net.c
@@ -244,6 +244,13 @@ static int vhost_net_start_one(struct vhost_net *net,
struct vhost_vring_file file = { };
int r;
+ if (net->nc->info->prepare) {
+ r = net->nc->info->prepare(net->nc);
+ if (r < 0) {
+ return r;
+ }
+ }
+
r = vhost_dev_enable_notifiers(&net->dev, dev);
if (r < 0) {
goto fail_notifiers;
--
2.31.1
- [PATCH v7 00/12] NIC vhost-vdpa state restore via Shadow CVQ, Eugenio Pérez, 2022/08/04
- [PATCH v7 02/12] vhost: use SVQ element ndescs instead of opaque data for desc validation, Eugenio Pérez, 2022/08/04
- [PATCH v7 03/12] vhost: Delete useless read memory barrier, Eugenio Pérez, 2022/08/04
- [PATCH v7 04/12] vhost: Do not depend on !NULL VirtQueueElement on vhost_svq_flush, Eugenio Pérez, 2022/08/04
- [PATCH v7 05/12] vhost_net: Add NetClientInfo prepare callback,
Eugenio Pérez <=
- [PATCH v7 07/12] vdpa: add net_vhost_vdpa_cvq_info NetClientInfo, Eugenio Pérez, 2022/08/04
- [PATCH v7 06/12] vhost_net: Add NetClientInfo stop callback, Eugenio Pérez, 2022/08/04
- [PATCH v7 01/12] vhost: stop transfer elem ownership in vhost_handle_guest_kick, Eugenio Pérez, 2022/08/04
- [PATCH v7 08/12] vdpa: Move command buffers map to start of net device, Eugenio Pérez, 2022/08/04