Le 07/06/2023 à 17:24, Manivannan Sadhasivam a écrit :
Add a network driver for the Modem Host Interface (MHI) endpoint devices
that provides network interfaces to the PCIe based Qualcomm endpoint
devices supporting MHI bus. This driver allows the MHI endpoint devices to
establish IP communication with the host machines (x86, ARM64) over MHI
bus.
The driver currently supports only IP_SW0 MHI channel that can be used
to route IP traffic from the endpoint CPU to host machine.
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx>
---
[...]
+static int mhi_ep_net_newlink(struct mhi_ep_device *mhi_dev, struct net_device *ndev)
+{
+ struct mhi_ep_net_dev *mhi_ep_netdev;
+ int ret;
+
+ mhi_ep_netdev = netdev_priv(ndev);
+
+ dev_set_drvdata(&mhi_dev->dev, mhi_ep_netdev);
+ mhi_ep_netdev->ndev = ndev;
+ mhi_ep_netdev->mdev = mhi_dev;
+ mhi_ep_netdev->mru = mhi_dev->mhi_cntrl->mru;
+
+ skb_queue_head_init(&mhi_ep_netdev->tx_buffers);
+ spin_lock_init(&mhi_ep_netdev->tx_lock);
+
+ u64_stats_init(&mhi_ep_netdev->stats.rx_syncp);
+ u64_stats_init(&mhi_ep_netdev->stats.tx_syncp);
+
+ mhi_ep_netdev->xmit_wq = alloc_workqueue("mhi_ep_net_xmit_wq", 0, WQ_HIGHPRI);
if (!mhi_ep_netdev->xmit_wq)
return -ENOMEM;
+ INIT_WORK(&mhi_ep_netdev->xmit_work, mhi_ep_net_dev_process_queue_packets);
+
+ ret = register_netdev(ndev);
+ if (ret) {
+ destroy_workqueue(mhi_ep_netdev->xmit_wq);
I don't really think it is needed, but to be consistent with
mhi_ep_net_dellink(), maybe:
dev_set_drvdata(&mhi_dev->dev, NULL);
CJ
+ return ret;
+ }
+
+ return 0;
+}
[...]
