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vty: Introduce cmd 'cs7 instance <0-15> asp NAME audit point-code POINT_CODE'

This command is useful to debug state of a given route on a remote SG.
It can also be used to manually update local state when response arrive
in case we run under some sort of misalignment with peer.

Change-Id: I607df3d84562e56d329bea1a730e26c8cdaae591
---
M src/ss7_asp_vty.c
M tests/vty/osmo_stp_test.vty
2 files changed, 59 insertions(+), 0 deletions(-)

git pull ssh://gerrit.osmocom.org:29418/libosmo-sigtran refs/changes/85/40685/1

diff --git a/src/ss7_asp_vty.c b/src/ss7_asp_vty.c
index c69b66b..346b316 100644
--- a/src/ss7_asp_vty.c
+++ b/src/ss7_asp_vty.c
@@ -99,6 +99,62 @@
 	{ 0, NULL }
 };
 
+static void tx_daud_pc(struct osmo_ss7_asp *asp, uint32_t pc)
+{
+	uint32_t rctx[OSMO_SS7_MAX_RCTX_COUNT];
+	unsigned int num_rctx;
+	char buf_pc[MAX_PC_STR_LEN];
+	uint32_t aff_pc;
+
+	LOGPASP(asp, DLSS7, LOGL_NOTICE, "VTY: Tx DAUD pc=%u=%s\n",
+		pc, osmo_ss7_pointcode_print_buf(buf_pc, sizeof(buf_pc), asp->inst, pc));
+
+	aff_pc = htonl(pc); /* mask = 0 */
+	num_rctx = ss7_asp_get_all_rctx_be(asp, rctx, ARRAY_SIZE(rctx), NULL);
+	xua_tx_snm_daud(asp, rctx, num_rctx, &aff_pc, 1, "VTY");
+}
+
+DEFUN_ATTR(cs7_asp_audit, cs7_asp_audit_cmd,
+	   "cs7 instance <0-15> asp NAME audit point-code POINT_CODE",
+	   CS7_STR "Instance related commands\n" "SS7 Instance Number\n"
+	   "ASP related commands\n" "Name of ASP\n"
+	   "Audit destination Point Code (xUA DAUD)\n"
+	   "Destination Point Code to audit\n"
+	   "Destination Point Code value\n",
+	   CMD_ATTR_IMMEDIATE)
+{
+	struct osmo_ss7_instance *inst;
+	struct osmo_ss7_asp *asp;
+	int pc;
+
+	inst = osmo_ss7_instance_find(atoi(argv[0]));
+	if (!inst) {
+		vty_out(vty, "unknown instance '%s'%s", argv[0], VTY_NEWLINE);
+		return CMD_WARNING;
+	}
+
+	asp = osmo_ss7_asp_find_by_name(inst, argv[1]);
+	if (!asp) {
+		vty_out(vty, "unknown ASP '%s'%s", argv[1], VTY_NEWLINE);
+		return CMD_WARNING;
+	}
+
+	if (asp->cfg.role != OSMO_SS7_ASP_ROLE_ASP) {
+		vty_out(vty, "ASP audit (DAUD) can't be sent in role '%s'%s",
+			get_value_string(osmo_ss7_asp_role_names, asp->cfg.role), VTY_NEWLINE);
+		return CMD_WARNING;
+	}
+
+	pc = osmo_ss7_pointcode_parse(asp->inst, argv[2]);
+	if (pc < 0) {
+		vty_out(vty, "Invalid point code (%s)%s", argv[2], VTY_NEWLINE);
+		return CMD_WARNING;
+	}
+
+	tx_daud_pc(asp, pc);
+	return CMD_SUCCESS;
+}
+
 DEFUN_ATTR(cs7_asp, cs7_asp_cmd,
 	   "asp NAME <0-65535> <0-65535> " XUA_VAR_STR,
 	   "Configure Application Server Process\n"
@@ -1356,6 +1412,8 @@
 							NO_STR "Disable quirk to work around interop issues\n",
 							"\n", "\n", 0);
 
+	install_lib_element(ENABLE_NODE, &cs7_asp_audit_cmd);
+
 	install_node(&asp_node, NULL);
 	install_lib_element_ve(&show_cs7_asp_cmd);
 	install_lib_element_ve(&show_cs7_asp_name_cmd);
diff --git a/tests/vty/osmo_stp_test.vty b/tests/vty/osmo_stp_test.vty
index 0d6ffff..3f8dfaf 100644
--- a/tests/vty/osmo_stp_test.vty
+++ b/tests/vty/osmo_stp_test.vty
@@ -31,6 +31,7 @@
   show cs7 (sua|m3ua|ipa) (sctp|tcp) [<0-65534>]
   show cs7 config
   cs7 instance <0-15> asp NAME disconnect
+  cs7 instance <0-15> asp NAME audit point-code POINT_CODE
   show cs7 instance <0-15> asp
   show cs7 instance <0-15> asp name ASP_NAME
   show cs7 instance <0-15> asp-remaddr

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