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Date: Tue, 3 May 2022 19:38:58 -0700
From: Mat Martineau <mathew.j.martineau@...ux.intel.com>
To: netdev@...r.kernel.org
Cc: Kishen Maloor <kishen.maloor@...el.com>, davem@...emloft.net,
kuba@...nel.org, pabeni@...hat.com, edumazet@...gle.com,
matthieu.baerts@...sares.net, mptcp@...ts.linux.dev,
Mat Martineau <mathew.j.martineau@...ux.intel.com>
Subject: [PATCH net-next 10/13] selftests: mptcp: support MPTCP_PM_CMD_SUBFLOW_DESTROY
From: Kishen Maloor <kishen.maloor@...el.com>
This change updates the "pm_nl_ctl" testing sample with a "dsf"
(destroy subflow) option to support the newly added netlink interface
command MPTCP_PM_CMD_SUBFLOW_DESTROY over the chosen MPTCP connection.
E.g. ./pm_nl_ctl dsf lip 10.0.2.1 lport 44567 rip 10.0.2.2 rport 56789
token 823274047
Acked-by: Paolo Abeni <pabeni@...hat.com>
Signed-off-by: Kishen Maloor <kishen.maloor@...el.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@...ux.intel.com>
---
tools/testing/selftests/net/mptcp/pm_nl_ctl.c | 115 ++++++++++++++++++
1 file changed, 115 insertions(+)
diff --git a/tools/testing/selftests/net/mptcp/pm_nl_ctl.c b/tools/testing/selftests/net/mptcp/pm_nl_ctl.c
index e2437bacd133..8d74fcb04929 100644
--- a/tools/testing/selftests/net/mptcp/pm_nl_ctl.c
+++ b/tools/testing/selftests/net/mptcp/pm_nl_ctl.c
@@ -30,6 +30,7 @@ static void syntax(char *argv[])
fprintf(stderr, "\tann <local-ip> id <local-id> token <token> [port <local-port>] [dev <name>]\n");
fprintf(stderr, "\trem id <local-id> token <token>\n");
fprintf(stderr, "\tcsf lip <local-ip> lid <local-id> rip <remote-ip> rport <remote-port> token <token>\n");
+ fprintf(stderr, "\tdsf lip <local-ip> lport <local-port> rip <remote-ip> rport <remote-port> token <token>\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");
@@ -174,6 +175,118 @@ static int resolve_mptcp_pm_netlink(int fd)
return genl_parse_getfamily((void *)data);
}
+int dsf(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, *addr;
+ u_int16_t family, port;
+ struct nlmsghdr *nh;
+ u_int32_t token;
+ int addr_start;
+ int off = 0;
+ int arg;
+
+ const char *params[5];
+
+ memset(params, 0, 5 * sizeof(const char *));
+
+ memset(data, 0, sizeof(data));
+ nh = (void *)data;
+ off = init_genl_req(data, pm_family, MPTCP_PM_CMD_SUBFLOW_DESTROY,
+ MPTCP_PM_VER);
+
+ if (argc < 12)
+ syntax(argv);
+
+ /* Params recorded in this order:
+ * <local-ip>, <local-port>, <remote-ip>, <remote-port>, <token>
+ */
+ for (arg = 2; arg < argc; arg++) {
+ if (!strcmp(argv[arg], "lip")) {
+ if (++arg >= argc)
+ error(1, 0, " missing local IP");
+
+ params[0] = argv[arg];
+ } else if (!strcmp(argv[arg], "lport")) {
+ if (++arg >= argc)
+ error(1, 0, " missing local port");
+
+ params[1] = argv[arg];
+ } else if (!strcmp(argv[arg], "rip")) {
+ if (++arg >= argc)
+ error(1, 0, " missing remote IP");
+
+ params[2] = argv[arg];
+ } else if (!strcmp(argv[arg], "rport")) {
+ if (++arg >= argc)
+ error(1, 0, " missing remote port");
+
+ params[3] = argv[arg];
+ } else if (!strcmp(argv[arg], "token")) {
+ if (++arg >= argc)
+ error(1, 0, " missing token");
+
+ params[4] = argv[arg];
+ } else
+ error(1, 0, "unknown keyword %s", argv[arg]);
+ }
+
+ for (arg = 0; arg < 4; arg = arg + 2) {
+ /* addr header */
+ addr_start = off;
+ addr = (void *)(data + off);
+ addr->rta_type = NLA_F_NESTED |
+ ((arg == 0) ? MPTCP_PM_ATTR_ADDR : MPTCP_PM_ATTR_ADDR_REMOTE);
+ addr->rta_len = RTA_LENGTH(0);
+ off += NLMSG_ALIGN(addr->rta_len);
+
+ /* addr data */
+ rta = (void *)(data + off);
+ if (inet_pton(AF_INET, params[arg], 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, params[arg], 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", params[arg]);
+ 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);
+
+ /* port */
+ port = atoi(params[arg + 1]);
+ 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);
+
+ addr->rta_len = off - addr_start;
+ }
+
+ /* token */
+ token = atoi(params[4]);
+ 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 csf(int fd, int pm_family, int argc, char *argv[])
{
char data[NLMSG_ALIGN(sizeof(struct nlmsghdr)) +
@@ -1098,6 +1211,8 @@ int main(int argc, char *argv[])
return remove_addr(fd, pm_family, argc, argv);
else if (!strcmp(argv[1], "csf"))
return csf(fd, pm_family, argc, argv);
+ else if (!strcmp(argv[1], "dsf"))
+ return dsf(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"))
--
2.36.0
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