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selftests: mptcp: support MPTCP_PM_CMD_ANNOUNCE

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This change updates the "pm_nl_ctl" testing sample with an "ann"
(announce) option to support the newly added netlink interface command
MPTCP_PM_CMD_ANNOUNCE to issue ADD_ADDR advertisements over the
chosen MPTCP connection.

E.g. ./pm_nl_ctl ann 192.168.122.75 token 823274047 id 25 dev enp1s0

Acked-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Kishen Maloor <kishen.maloor@intel.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Kishen Maloor 2022-05-03 19:38:53 -07:00 committed by David S. Miller
parent 9ab4807c84
commit 9a0b36509d
1 changed files with 131 additions and 0 deletions
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131
tools/testing/selftests/net/mptcp/pm_nl_ctl.c
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@ -6,6 +6,7 @@
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <limits.h>
#include <sys/socket.h>
#include <sys/types.h>
@ -26,6 +27,7 @@ static void syntax(char *argv[])
{
fprintf(stderr, "%s add|get|set|del|flush|dump|accept [<args>]\n", argv[0]);
fprintf(stderr, "\tadd [flags signal|subflow|backup|fullmesh] [id <nr>] [dev <name>] <ip>\n");
fprintf(stderr, "\tann <local-ip> id <local-id> token <token> [port <local-port>] [dev <name>]\n");
fprintf(stderr, "\tdel <id> [<ip>]\n");
fprintf(stderr, "\tget <id>\n");
fprintf(stderr, "\tset [<ip>] [id <nr>] flags [no]backup|[no]fullmesh [port <nr>]\n");
@ -170,6 +172,133 @@ static int resolve_mptcp_pm_netlink(int fd)
return genl_parse_getfamily((void *)data);
}
int announce_addr(int fd, int pm_family, int argc, char *argv[])
{
char data[NLMSG_ALIGN(sizeof(struct nlmsghdr)) +
NLMSG_ALIGN(sizeof(struct genlmsghdr)) +
1024];
u_int32_t flags = MPTCP_PM_ADDR_FLAG_SIGNAL;
u_int32_t token = UINT_MAX;
struct rtattr *rta, *addr;
u_int32_t id = UINT_MAX;
struct nlmsghdr *nh;
u_int16_t family;
int addr_start;
int off = 0;
int arg;
memset(data, 0, sizeof(data));
nh = (void *)data;
off = init_genl_req(data, pm_family, MPTCP_PM_CMD_ANNOUNCE,
MPTCP_PM_VER);
if (argc < 7)
syntax(argv);
/* local-ip header */
addr_start = off;
addr = (void *)(data + off);
addr->rta_type = NLA_F_NESTED | MPTCP_PM_ATTR_ADDR;
addr->rta_len = RTA_LENGTH(0);
off += NLMSG_ALIGN(addr->rta_len);
/* local-ip data */
/* record addr type */
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);
/* addr 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], "id")) {
/* local-id */
if (++arg >= argc)
error(1, 0, " missing id value");
id = atoi(argv[arg]);
rta = (void *)(data + off);
rta->rta_type = MPTCP_PM_ADDR_ATTR_ID;
rta->rta_len = RTA_LENGTH(1);
memcpy(RTA_DATA(rta), &id, 1);
off += NLMSG_ALIGN(rta->rta_len);
} else if (!strcmp(argv[arg], "dev")) {
/* for the if_index */
int32_t ifindex;
if (++arg >= argc)
error(1, 0, " missing dev name");
ifindex = if_nametoindex(argv[arg]);
if (!ifindex)
error(1, errno, "unknown device %s", argv[arg]);
rta = (void *)(data + off);
rta->rta_type = MPTCP_PM_ADDR_ATTR_IF_IDX;
rta->rta_len = RTA_LENGTH(4);
memcpy(RTA_DATA(rta), &ifindex, 4);
off += NLMSG_ALIGN(rta->rta_len);
} else if (!strcmp(argv[arg], "port")) {
/* local-port (optional) */
u_int16_t port;
if (++arg >= argc)
error(1, 0, " missing port value");
port = atoi(argv[arg]);
rta = (void *)(data + off);
rta->rta_type = MPTCP_PM_ADDR_ATTR_PORT;
rta->rta_len = RTA_LENGTH(2);
memcpy(RTA_DATA(rta), &port, 2);
off += NLMSG_ALIGN(rta->rta_len);
} else if (!strcmp(argv[arg], "token")) {
/* MPTCP connection token */
if (++arg >= argc)
error(1, 0, " missing token value");
token = atoi(argv[arg]);
} else
error(1, 0, "unknown keyword %s", argv[arg]);
}
/* addr flags */
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);
addr->rta_len = off - addr_start;
if (id == UINT_MAX || token == UINT_MAX)
error(1, 0, " missing mandatory inputs");
/* token */
rta = (void *)(data + off);
rta->rta_type = MPTCP_PM_ATTR_TOKEN;
rta->rta_len = RTA_LENGTH(4);
memcpy(RTA_DATA(rta), &token, 4);
off += NLMSG_ALIGN(rta->rta_len);
do_nl_req(fd, nh, off, 0);
return 0;
}
int add_addr(int fd, int pm_family, int argc, char *argv[])
{
char data[NLMSG_ALIGN(sizeof(struct nlmsghdr)) +
@ -786,6 +915,8 @@ int main(int argc, char *argv[])
if (!strcmp(argv[1], "add"))
return add_addr(fd, pm_family, argc, argv);
else if (!strcmp(argv[1], "ann"))
return announce_addr(fd, pm_family, argc, argv);
else if (!strcmp(argv[1], "del"))
return del_addr(fd, pm_family, argc, argv);
else if (!strcmp(argv[1], "flush"))