tools/testing/selftests/net/tfo.c

File Facts

System

Linux kernel

Corpus path

tools/testing/selftests/net/tfo.c

Extension

.c

Size

3774 bytes

Lines

178

Domain

Support Tooling And Documentation

Bucket

tools

Inferred role

Support Tooling And Documentation: implementation source

Status

source implementation candidate

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

• Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• error.h
• fcntl.h
• limits.h
• stdbool.h
• stdint.h
• stdio.h
• stdlib.h
• string.h
• unistd.h
• arpa/inet.h
• sys/socket.h
• netinet/tcp.h
• errno.h

Detected Declarations

• function parse_address
• function run_server
• function run_client
• function usage
• function parse_opts
• function main

Annotated Snippet

switch (c) {
		case 's':
			if (cfg_client)
				error(1, 0, "Pass one of -s or -c");
			cfg_server = 1;
			break;
		case 'c':
			if (cfg_server)
				error(1, 0, "Pass one of -s or -c");
			cfg_client = 1;
			break;
		case 'h':
			addr = optarg;
			break;
		case 'p':
			cfg_port = strtoul(optarg, NULL, 0);
			break;
		case 'o':
			cfg_outfile = strdup(optarg);
			if (!cfg_outfile)
				error(1, 0, "outfile invalid");
			break;
		}
	}

	if (cfg_server && addr)
		error(1, 0, "Server cannot have -h specified");

	memset(addr6, 0, sizeof(*addr6));
	addr6->sin6_family = AF_INET6;
	addr6->sin6_port = htons(cfg_port);
	addr6->sin6_addr = in6addr_any;
	if (addr) {
		ret = parse_address(addr, cfg_port, addr6);
		if (ret)
			error(1, 0, "Client address parse error: %s", addr);
	}
}

int main(int argc, char **argv)
{
	parse_opts(argc, argv);

	if (cfg_server)
		run_server();
	else if (cfg_client)
		run_client();

	return 0;
}

Annotation

• Immediate include surface: `error.h`, `fcntl.h`, `limits.h`, `stdbool.h`, `stdint.h`, `stdio.h`, `stdlib.h`, `string.h`.
• Detected declarations: `function parse_address`, `function run_server`, `function run_client`, `function usage`, `function parse_opts`, `function main`.
• Atlas domain: Support Tooling And Documentation / tools.
• Implementation status: source implementation candidate.

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.