drivers/net/ethernet/cavium/liquidio/lio_vf_main.c

Source file repositories/reference/linux-study-clean/drivers/net/ethernet/cavium/liquidio/lio_vf_main.c

File Facts

System
Linux kernel
Corpus path
drivers/net/ethernet/cavium/liquidio/lio_vf_main.c
Extension
.c
Size
65699 bytes
Lines
2425
Domain
Driver Families
Bucket
drivers/net
Inferred role
Driver Families: operation-table or driver-model contract
Status
pattern implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

static struct pci_driver liquidio_vf_pci_driver = {
	.name		= "LiquidIO_VF",
	.id_table	= liquidio_vf_pci_tbl,
	.probe		= liquidio_vf_probe,
	.remove		= liquidio_vf_remove,
	.err_handler	= &liquidio_vf_err_handler,    /* For AER */
};

/**
 * print_link_info - Print link information
 * @netdev: network device
 */
static void print_link_info(struct net_device *netdev)
{
	struct lio *lio = GET_LIO(netdev);

	if (!ifstate_check(lio, LIO_IFSTATE_RESETTING) &&
	    ifstate_check(lio, LIO_IFSTATE_REGISTERED)) {
		struct oct_link_info *linfo = &lio->linfo;

		if (linfo->link.s.link_up) {
			netif_info(lio, link, lio->netdev, "%d Mbps %s Duplex UP\n",
				   linfo->link.s.speed,
				   (linfo->link.s.duplex) ? "Full" : "Half");
		} else {
			netif_info(lio, link, lio->netdev, "Link Down\n");
		}
	}
}

/**
 * octnet_link_status_change - Routine to notify MTU change
 * @work: work_struct data structure
 */
static void octnet_link_status_change(struct work_struct *work)
{
	struct cavium_wk *wk = (struct cavium_wk *)work;
	struct lio *lio = (struct lio *)wk->ctxptr;

	/* lio->linfo.link.s.mtu always contains max MTU of the lio interface.
	 * this API is invoked only when new max-MTU of the interface is
	 * less than current MTU.
	 */
	rtnl_lock();
	dev_set_mtu(lio->netdev, lio->linfo.link.s.mtu);
	rtnl_unlock();
}

/**
 * setup_link_status_change_wq - Sets up the mtu status change work
 * @netdev: network device
 */
static int setup_link_status_change_wq(struct net_device *netdev)
{
	struct lio *lio = GET_LIO(netdev);
	struct octeon_device *oct = lio->oct_dev;

	lio->link_status_wq.wq = alloc_workqueue("link-status",
						 WQ_MEM_RECLAIM | WQ_PERCPU,
						 0);
	if (!lio->link_status_wq.wq) {
		dev_err(&oct->pci_dev->dev, "unable to create cavium link status wq\n");
		return -1;
	}
	INIT_DELAYED_WORK(&lio->link_status_wq.wk.work,
			  octnet_link_status_change);
	lio->link_status_wq.wk.ctxptr = lio;

	return 0;
}

static void cleanup_link_status_change_wq(struct net_device *netdev)
{
	struct lio *lio = GET_LIO(netdev);

	if (lio->link_status_wq.wq) {
		cancel_delayed_work_sync(&lio->link_status_wq.wk.work);
		destroy_workqueue(lio->link_status_wq.wq);
	}
}

/**
 * update_link_status - Update link status
 * @netdev: network device
 * @ls: link status structure
 *
 * Called on receipt of a link status response from the core application to
 * update each interface's link status.
 */
static void update_link_status(struct net_device *netdev,

Annotation

Implementation Notes