drivers/infiniband/sw/rxe/rxe_loc.h

Source file repositories/reference/linux-study-clean/drivers/infiniband/sw/rxe/rxe_loc.h

File Facts

System: Linux kernel
Corpus path: drivers/infiniband/sw/rxe/rxe_loc.h
Extension: .h
Size: 9156 bytes
Lines: 252
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.

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.
Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

No C-style include directives detected by the generator.

Detected Declarations

struct rxe_mmap_info
function qp_num
function qp_type
function qp_state
function qp_mtu
function is_odp_mr
function rxe_advance_resp_resource
function wr_opcode_mask
function rxe_odp_mr_init_user
function rxe_odp_mr_copy
function rxe_odp_atomic_op
function rxe_odp_flush_pmem_iova
function rxe_odp_do_atomic_write
function rxe_ib_advise_mr

Annotated Snippet

struct rxe_mmap_info {
	struct list_head	pending_mmaps;
	struct ib_ucontext	*context;
	struct kref		ref;
	void			*obj;

	struct mminfo info;
};

void rxe_mmap_release(struct kref *ref);

struct rxe_mmap_info *rxe_create_mmap_info(struct rxe_dev *dev, u32 size,
					   struct ib_udata *udata, void *obj);

int rxe_mmap(struct ib_ucontext *context, struct vm_area_struct *vma);

/* rxe_mr.c */
u8 rxe_get_next_key(u32 last_key);
void rxe_mr_init(int access, struct rxe_mr *mr);
void rxe_mr_init_dma(int access, struct rxe_mr *mr);
int rxe_mr_init_user(struct rxe_dev *rxe, u64 start, u64 length,
		     int access, struct rxe_mr *mr);
int rxe_mr_init_fast(int max_pages, struct rxe_mr *mr);
int rxe_flush_pmem_iova(struct rxe_mr *mr, u64 iova, unsigned int length);
int rxe_mr_copy(struct rxe_mr *mr, u64 iova, void *addr,
		unsigned int length, enum rxe_mr_copy_dir dir);
int copy_data(struct rxe_pd *pd, int access, struct rxe_dma_info *dma,
	      void *addr, int length, enum rxe_mr_copy_dir dir);
int rxe_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg,
		  int sg_nents, unsigned int *sg_offset);
enum resp_states rxe_mr_do_atomic_op(struct rxe_mr *mr, u64 iova, int opcode,
				     u64 compare, u64 swap_add, u64 *orig_val);
enum resp_states rxe_mr_do_atomic_write(struct rxe_mr *mr, u64 iova, u64 value);
struct rxe_mr *lookup_mr(struct rxe_pd *pd, int access, u32 key,
			 enum rxe_mr_lookup_type type);
int mr_check_range(struct rxe_mr *mr, u64 iova, size_t length);
int advance_dma_data(struct rxe_dma_info *dma, unsigned int length);
int rxe_invalidate_mr(struct rxe_qp *qp, u32 key);
int rxe_reg_fast_mr(struct rxe_qp *qp, struct rxe_send_wqe *wqe);
void rxe_mr_cleanup(struct rxe_pool_elem *elem);

/* defined in rxe_mr.c; used in rxe_mr.c and rxe_odp.c */
extern spinlock_t atomic_ops_lock;

/* rxe_mw.c */
int rxe_alloc_mw(struct ib_mw *ibmw, struct ib_udata *udata);
int rxe_dealloc_mw(struct ib_mw *ibmw);
int rxe_bind_mw(struct rxe_qp *qp, struct rxe_send_wqe *wqe);
int rxe_invalidate_mw(struct rxe_qp *qp, u32 rkey);
struct rxe_mw *rxe_lookup_mw(struct rxe_qp *qp, int access, u32 rkey);
void rxe_mw_cleanup(struct rxe_pool_elem *elem);

/* rxe_net.c */
struct sk_buff *rxe_init_packet(struct rxe_dev *rxe, struct rxe_av *av,
				int paylen, struct rxe_pkt_info *pkt);
int rxe_prepare(struct rxe_av *av, struct rxe_pkt_info *pkt,
		struct sk_buff *skb);
int rxe_xmit_packet(struct rxe_qp *qp, struct rxe_pkt_info *pkt,
		    struct sk_buff *skb);
const char *rxe_parent_name(struct rxe_dev *rxe, unsigned int port_num);

/* rxe_qp.c */
int rxe_qp_chk_init(struct rxe_dev *rxe, struct ib_qp_init_attr *init);
int rxe_qp_from_init(struct rxe_dev *rxe, struct rxe_qp *qp, struct rxe_pd *pd,
		     struct ib_qp_init_attr *init,
		     struct rxe_create_qp_resp __user *uresp,
		     struct ib_pd *ibpd, struct ib_udata *udata);
int rxe_qp_to_init(struct rxe_qp *qp, struct ib_qp_init_attr *init);
int rxe_qp_chk_attr(struct rxe_dev *rxe, struct rxe_qp *qp,
		    struct ib_qp_attr *attr, int mask);
int rxe_qp_from_attr(struct rxe_qp *qp, struct ib_qp_attr *attr,
		     int mask, struct ib_udata *udata);
int rxe_qp_to_attr(struct rxe_qp *qp, struct ib_qp_attr *attr, int mask);
void rxe_qp_error(struct rxe_qp *qp);
int rxe_qp_chk_destroy(struct rxe_qp *qp);
void rxe_qp_cleanup(struct rxe_pool_elem *elem);

static inline int qp_num(struct rxe_qp *qp)
{
	return qp->ibqp.qp_num;
}

static inline enum ib_qp_type qp_type(struct rxe_qp *qp)
{
	return qp->ibqp.qp_type;
}

static inline enum ib_qp_state qp_state(struct rxe_qp *qp)
{
	return qp->attr.qp_state;

Annotation

Detected declarations: `struct rxe_mmap_info`, `function qp_num`, `function qp_type`, `function qp_state`, `function qp_mtu`, `function is_odp_mr`, `function rxe_advance_resp_resource`, `function wr_opcode_mask`, `function rxe_odp_mr_init_user`, `function rxe_odp_mr_copy`.
Atlas domain: Driver Families / drivers/infiniband.
Implementation status: source implementation candidate.
Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.

Implementation Notes

This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.