net/smc/smc_stats.c

File Facts

System

Linux kernel

Corpus path

net/smc/smc_stats.c

Extension

.c

Size

11429 bytes

Lines

420

Domain

Networking Core

Bucket

Sockets, Protocols, Packet Path, And Network Policy

Inferred role

Networking Core: implementation source

Status

source implementation candidate

Why This File Exists

Networking stack implementation surface: socket APIs, protocol dispatch, packet flow, routing, filtering, and network namespaces.

• Networking stack implementation surface: socket APIs, protocol dispatch, packet flow, routing, filtering, and network namespaces.
• Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
• Allocates kernel memory; connect allocation flags and lifetime to context constraints.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/init.h
• linux/mutex.h
• linux/percpu.h
• linux/ctype.h
• linux/smc.h
• net/genetlink.h
• net/sock.h
• smc_netlink.h
• smc_stats.h

Detected Declarations

• function RDMA
• function smc_stats_exit
• function smc_nl_fill_stats_rmb_data
• function smc_nl_fill_stats_bufsize_data
• function smc_nl_fill_stats_tech_data
• function smc_nl_get_stats
• function smc_nl_get_fback_details
• function smc_nl_get_fback_stats

Annotated Snippet

if (!skip_serv) {
			rc_srv = smc_nl_get_fback_details(skb, cb, k, is_srv);
			if (rc_srv && rc_srv != -ENODATA)
				break;
		} else {
			skip_serv = 0;
		}
		rc_clnt = smc_nl_get_fback_details(skb, cb, k, !is_srv);
		if (rc_clnt && rc_clnt != -ENODATA) {
			skip_serv = 1;
			break;
		}
		if (rc_clnt == -ENODATA && rc_srv == -ENODATA)
			break;
	}
	mutex_unlock(&net->smc.mutex_fback_rsn);
	cb_ctx->pos[1] = skip_serv;
	cb_ctx->pos[0] = k;
	return skb->len;
}

Annotation

• Immediate include surface: `linux/init.h`, `linux/mutex.h`, `linux/percpu.h`, `linux/ctype.h`, `linux/smc.h`, `net/genetlink.h`, `net/sock.h`, `smc_netlink.h`.
• Detected declarations: `function RDMA`, `function smc_stats_exit`, `function smc_nl_fill_stats_rmb_data`, `function smc_nl_fill_stats_bufsize_data`, `function smc_nl_fill_stats_tech_data`, `function smc_nl_get_stats`, `function smc_nl_get_fback_details`, `function smc_nl_get_fback_stats`.
• Atlas domain: Networking Core / Sockets, Protocols, Packet Path, And Network Policy.
• 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.