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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: Geliang Tang <geliangtang@gmail.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Geliang Tang 2021-01-08 16:48:00 -08:00 committed by Jakub Kicinski
parent 0f9f696a50
commit 6e8b244a3e
1 changed files with 86 additions and 1 deletions
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87
tools/testing/selftests/net/mptcp/pm_nl_ctl.c
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@ -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);