drivers/infiniband/hw/usnic/usnic_ib.h

Source file repositories/reference/linux-study-clean/drivers/infiniband/hw/usnic/usnic_ib.h

File Facts

System
Linux kernel
Corpus path
drivers/infiniband/hw/usnic/usnic_ib.h
Extension
.h
Size
3572 bytes
Lines
138
Domain
Driver Families
Bucket
drivers/infiniband
Inferred role
Driver Families: implementation source
Status
source 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

struct usnic_ib_ucontext {
	struct ib_ucontext		ibucontext;
	/* Protected by usnic_ib_dev->usdev_lock */
	struct list_head		qp_grp_list;
	struct list_head		link;
};

struct usnic_ib_pd {
	struct ib_pd			ibpd;
	struct usnic_uiom_pd		*umem_pd;
};

struct usnic_ib_cq {
	struct ib_cq			ibcq;
};

struct usnic_ib_mr {
	struct ib_mr			ibmr;
	struct usnic_uiom_reg		*umem;
};

struct usnic_ib_dev {
	struct ib_device		ib_dev;
	struct pci_dev			*pdev;
	struct net_device		*netdev;
	struct usnic_fwd_dev		*ufdev;
	struct list_head		ib_dev_link;
	struct list_head		vf_dev_list;
	struct list_head		ctx_list;
	struct mutex			usdev_lock;

	/* provisioning information */
	struct kref			vf_cnt;
	unsigned int			vf_res_cnt[USNIC_VNIC_RES_TYPE_MAX];

	/* sysfs vars for QPN reporting */
	struct kobject *qpn_kobj;
};

struct usnic_ib_vf {
	struct usnic_ib_dev		*pf;
	struct mutex			lock;
	struct usnic_vnic		*vnic;
	unsigned int			qp_grp_ref_cnt;
	struct usnic_ib_pd		*pd;
	struct list_head		link;
};

static inline
struct usnic_ib_dev *to_usdev(struct ib_device *ibdev)
{
	return container_of(ibdev, struct usnic_ib_dev, ib_dev);
}

static inline
struct usnic_ib_ucontext *to_ucontext(struct ib_ucontext *ibucontext)
{
	return container_of(ibucontext, struct usnic_ib_ucontext, ibucontext);
}

static inline
struct usnic_ib_pd *to_upd(struct ib_pd *ibpd)
{
	return container_of(ibpd, struct usnic_ib_pd, ibpd);
}

static inline
struct usnic_ib_ucontext *to_uucontext(struct ib_ucontext *ibucontext)
{
	return container_of(ibucontext, struct usnic_ib_ucontext, ibucontext);
}

static inline
struct usnic_ib_mr *to_umr(struct ib_mr *ibmr)
{
	return container_of(ibmr, struct usnic_ib_mr, ibmr);
}
void usnic_ib_log_vf(struct usnic_ib_vf *vf);

#define UPDATE_PTR_LEFT(N, P, L)			\
do {							\
	L -= (N);					\
	P += (N);					\
} while (0)

#endif /* USNIC_IB_H_ */

Annotation

Implementation Notes