drivers/infiniband/hw/irdma/cm.h

File Facts

System

Linux kernel

Corpus path

drivers/infiniband/hw/irdma/cm.h

Extension

.h

Size

10140 bytes

Lines

417

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 ietf_mpa_v1
• struct ietf_rtr_msg
• struct ietf_mpa_v2
• struct option_base
• struct option_mss
• struct option_windowscale
• struct irdma_timer_entry
• struct irdma_cm_tcp_context
• struct irdma_apbvt_entry
• struct irdma_cm_listener
• struct irdma_kmem_info
• struct irdma_mpa_priv_info
• struct irdma_cm_node
• struct irdma_cm_info
• struct irdma_cm_event
• struct irdma_cm_core
• enum ietf_mpa_flags
• enum irdma_timer_type
• enum option_nums
• enum irdma_cm_node_state
• enum mpa_frame_ver
• enum mpa_frame_key
• enum send_rdma0
• enum irdma_tcpip_pkt_type
• enum irdma_cm_listener_state
• enum irdma_cm_event_type
• function irdma_tos2dscp

Annotated Snippet

struct ietf_mpa_v1 {
	u8 key[IETF_MPA_KEY_SIZE];
	u8 flags;
	u8 rev;
	__be16 priv_data_len;
	u8 priv_data[];
};

struct ietf_rtr_msg {
	__be16 ctrl_ird;
	__be16 ctrl_ord;
};

struct ietf_mpa_v2 {
	u8 key[IETF_MPA_KEY_SIZE];
	u8 flags;
	u8 rev;
	__be16 priv_data_len;
	struct ietf_rtr_msg rtr_msg;
	u8 priv_data[];
};

struct option_base {
	u8 optionnum;
	u8 len;
};

struct option_mss {
	u8 optionnum;
	u8 len;
	__be16 mss;
};

struct option_windowscale {
	u8 optionnum;
	u8 len;
	u8 shiftcount;
};

union all_known_options {
	char eol;
	struct option_base base;
	struct option_mss mss;
	struct option_windowscale windowscale;
};

struct irdma_timer_entry {
	struct list_head list;
	unsigned long timetosend; /* jiffies */
	struct irdma_puda_buf *sqbuf;
	u32 type;
	u32 retrycount;
	u32 retranscount;
	u32 context;
	u32 send_retrans;
	int close_when_complete;
};

/* CM context params */
struct irdma_cm_tcp_context {
	u8 client;
	u32 loc_seq_num;
	u32 loc_ack_num;
	u32 rem_ack_num;
	u32 rcv_nxt;
	u32 loc_id;
	u32 rem_id;
	u32 snd_wnd;
	u32 max_snd_wnd;
	u32 rcv_wnd;
	u32 mss;
	u8 snd_wscale;
	u8 rcv_wscale;
};

struct irdma_apbvt_entry {
	struct hlist_node hlist;
	u32 use_cnt;
	u16 port;
};

struct irdma_cm_listener {
	struct list_head list;
	struct iw_cm_id *cm_id;
	struct irdma_cm_core *cm_core;
	struct irdma_device *iwdev;
	struct list_head child_listen_list;
	struct irdma_apbvt_entry *apbvt_entry;
	enum irdma_cm_listener_state listener_state;
	refcount_t refcnt;

Annotation

• Detected declarations: `struct ietf_mpa_v1`, `struct ietf_rtr_msg`, `struct ietf_mpa_v2`, `struct option_base`, `struct option_mss`, `struct option_windowscale`, `struct irdma_timer_entry`, `struct irdma_cm_tcp_context`, `struct irdma_apbvt_entry`, `struct irdma_cm_listener`.
• 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.