Commit 6e8b244a authored by Geliang Tang's avatar Geliang Tang Committed by Jakub Kicinski
Browse files

selftests: mptcp: add set_flags command in pm_nl_ctl 



This patch added the set_flags command in pm_nl_ctl, currently we can only
set two flags: backup and nobackup. The set_flags command can be used like
this:

 # pm_nl_ctl set 10.0.0.1 flags backup
 # pm_nl_ctl set 10.0.0.1 flags nobackup

Signed-off-by: default avatarGeliang Tang <geliangtang@gmail.com>
Signed-off-by: default avatarMat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent 0f9f696a

tools/testing/selftests/net/mptcp/pm_nl_ctl.c

+86 −1
Original line number Diff line number Diff line
@@ -24,10 +24,11 @@ 


static void syntax(char *argv[])

{

	fprintf(stderr, "%s add|get|del|flush|dump|accept [<args>]\n", argv[0]);

	fprintf(stderr, "%s add|get|set|del|flush|dump|accept [<args>]\n", argv[0]);

	fprintf(stderr, "\tadd [flags signal|subflow|backup] [id <nr>] [dev <name>] <ip>\n");

	fprintf(stderr, "\tdel <id>\n");

	fprintf(stderr, "\tget <id>\n");

	fprintf(stderr, "\tset <ip> [flags backup|nobackup]\n");

	fprintf(stderr, "\tflush\n");

	fprintf(stderr, "\tdump\n");

	fprintf(stderr, "\tlimits [<rcv addr max> <subflow max>]\n");
@@ -584,6 +585,88 @@ int get_set_limits(int fd, int pm_family, int argc, char *argv[]) 
	return 0;

}



int set_flags(int fd, int pm_family, int argc, char *argv[])

{

	char data[NLMSG_ALIGN(sizeof(struct nlmsghdr)) +

		  NLMSG_ALIGN(sizeof(struct genlmsghdr)) +

		  1024];

	struct rtattr *rta, *nest;

	struct nlmsghdr *nh;

	u_int32_t flags = 0;

	u_int16_t family;

	int nest_start;

	int off = 0;

	int arg;



	memset(data, 0, sizeof(data));

	nh = (void *)data;

	off = init_genl_req(data, pm_family, MPTCP_PM_CMD_SET_FLAGS,

			    MPTCP_PM_VER);



	if (argc < 3)

		syntax(argv);



	nest_start = off;

	nest = (void *)(data + off);

	nest->rta_type = NLA_F_NESTED | MPTCP_PM_ATTR_ADDR;

	nest->rta_len = RTA_LENGTH(0);

	off += NLMSG_ALIGN(nest->rta_len);



	/* addr data */

	rta = (void *)(data + off);

	if (inet_pton(AF_INET, argv[2], RTA_DATA(rta))) {

		family = AF_INET;

		rta->rta_type = MPTCP_PM_ADDR_ATTR_ADDR4;

		rta->rta_len = RTA_LENGTH(4);

	} else if (inet_pton(AF_INET6, argv[2], RTA_DATA(rta))) {

		family = AF_INET6;

		rta->rta_type = MPTCP_PM_ADDR_ATTR_ADDR6;

		rta->rta_len = RTA_LENGTH(16);

	} else {

		error(1, errno, "can't parse ip %s", argv[2]);

	}

	off += NLMSG_ALIGN(rta->rta_len);



	/* family */

	rta = (void *)(data + off);

	rta->rta_type = MPTCP_PM_ADDR_ATTR_FAMILY;

	rta->rta_len = RTA_LENGTH(2);

	memcpy(RTA_DATA(rta), &family, 2);

	off += NLMSG_ALIGN(rta->rta_len);



	for (arg = 3; arg < argc; arg++) {

		if (!strcmp(argv[arg], "flags")) {

			char *tok, *str;



			/* flags */

			if (++arg >= argc)

				error(1, 0, " missing flags value");



			/* do not support flag list yet */

			for (str = argv[arg]; (tok = strtok(str, ","));

			     str = NULL) {

				if (!strcmp(tok, "backup"))

					flags |= MPTCP_PM_ADDR_FLAG_BACKUP;

				else if (strcmp(tok, "nobackup"))

					error(1, errno,

					      "unknown flag %s", argv[arg]);

			}



			rta = (void *)(data + off);

			rta->rta_type = MPTCP_PM_ADDR_ATTR_FLAGS;

			rta->rta_len = RTA_LENGTH(4);

			memcpy(RTA_DATA(rta), &flags, 4);

			off += NLMSG_ALIGN(rta->rta_len);

		} else {

			error(1, 0, "unknown keyword %s", argv[arg]);

		}

	}

	nest->rta_len = off - nest_start;



	do_nl_req(fd, nh, off, 0);

	return 0;

}



int main(int argc, char *argv[])

{

	int fd, pm_family;
@@ -609,6 +692,8 @@ int main(int argc, char *argv[]) 
		return dump_addrs(fd, pm_family, argc, argv);

	else if (!strcmp(argv[1], "limits"))

		return get_set_limits(fd, pm_family, argc, argv);

	else if (!strcmp(argv[1], "set"))

		return set_flags(fd, pm_family, argc, argv);



	fprintf(stderr, "unknown sub-command: %s", argv[1]);

	syntax(argv);