20 	printf("USAGE:\n  %s [-l] <cg-path> <prog filename>\n", pname);  in usage()
21 	printf("\tLoad and attach a sock_ops program to the specified "  in usage()
23 	printf("\tIf \"-l\" is used, the program will continue to run\n");  in usage()
24 	printf("\tprinting the BPF log buffer\n");  in usage()
25 	printf("\tIf the specified filename does not end in \".o\", it\n");  in usage()
26 	printf("\tappends \"_kern.o\" to the name\n");  in usage()
27 	printf("\n");  in usage()
28 	printf("  %s -r <cg-path>\n", pname);  in usage()
29 	printf("\tDetaches the currently attached sock_ops program\n");  in usage()
30 	printf("\tfrom the specified cgroup\n");  in usage()
31 	printf("\n");  in usage()
52 			printf("ERROR: bpf_prog_detach: %d (%s)\n",  in main()
78 		printf("loading bpf file:%s\n", fn);  in main()
80 		printf("ERROR: load_bpf_file failed for: %s\n", fn);  in main()
81 		printf("%s", bpf_log_buf);  in main()
85 		printf("TCP BPF Loaded %s\n", fn);  in main()
89 		printf("ERROR: bpf_prog_attach: %d (%s)\n",  in main()