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From: longli@linuxonhyperv.com
To: Stephen Hemminger <stephen@networkplumber.org>, Wei Hu <weh@microsoft.com>
Cc: dev@dpdk.org,
Long Li <longli@microsoft.com>
Subject: [Patch v3 2/6] net/netvsc: introduce get_vmbus_device to get the
vmbus device
Date: Fri, 4 Apr 2025 17:35:34 -0700
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From: Long Li <longli@microsoft.com>
Introduce a function get the vmbus device from hn_data. For secondary
process, the vmbus device is in eth_dev's private region.
Signed-off-by: Long Li <longli@microsoft.com>
---
drivers/net/netvsc/hn_nvs.c | 15 +++++++++++++++
drivers/net/netvsc/hn_nvs.h | 2 ++
2 files changed, 17 insertions(+)
diff --git a/drivers/net/netvsc/hn_nvs.c b/drivers/net/netvsc/hn_nvs.c
index 7db82af9f3..fd20e3d06d 100644
--- a/drivers/net/netvsc/hn_nvs.c
+++ b/drivers/net/netvsc/hn_nvs.c
@@ -44,6 +44,21 @@ static const uint32_t hn_nvs_version[] = {
NVS_VERSION_1
};
+struct rte_vmbus_device *get_vmbus_device(struct hn_data *hv)
+{
+ struct rte_vmbus_device *vmbus = hv->vmbus;
+
+ /* For secondary process, vmbus is in the eth_dev private */
+ if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
+ struct rte_eth_dev *dev = &rte_eth_devices[hv->port_id];
+ struct hn_nvs_process_priv *process_priv = dev->process_private;
+
+ vmbus = process_priv->vmbus_dev;
+ }
+
+ return vmbus;
+}
+
static int hn_nvs_req_send(struct hn_data *hv,
void *req, uint32_t reqlen)
{
diff --git a/drivers/net/netvsc/hn_nvs.h b/drivers/net/netvsc/hn_nvs.h
index 3950749359..0d8fe27b65 100644
--- a/drivers/net/netvsc/hn_nvs.h
+++ b/drivers/net/netvsc/hn_nvs.h
@@ -221,6 +221,8 @@ void hn_nvs_handle_vfassoc(struct rte_eth_dev *dev,
const struct vmbus_chanpkt_hdr *hdr,
const void *data);
+struct rte_vmbus_device *get_vmbus_device(struct hn_data *hv);
+
static inline int
hn_nvs_send(struct vmbus_channel *chan, uint16_t flags,
void *nvs_msg, int nvs_msglen, uintptr_t sndc,
--
2.34.1