isisd: retrofit the 'max-lsp-lifetime' command

Signed-off-by: Emanuele Di Pascale <emanuele@voltanet.io>

1 files changed, 72 insertions, 0 deletions

diff --git a/isisd/isis_vty_fabricd.c b/isisd/isis_vty_fabricd.c
index 13fd41937..a507c0d24 100644
--- a/isisd/isis_vty_fabricd.c
+++ b/isisd/isis_vty_fabricd.c
@@ -475,6 +475,75 @@ DEFUN (no_lsp_refresh_interval,
 					DEFAULT_MAX_LSP_GEN_INTERVAL);
 }
 
+static int
+isis_vty_max_lsp_lifetime_set(struct vty *vty, int level, uint16_t interval)
+{
+	VTY_DECLVAR_CONTEXT(isis_area, area);
+	int lvl;
+	uint16_t refresh_interval = interval - 300;
+	int set_refresh_interval[ISIS_LEVELS] = {0, 0};
+
+	for (lvl = IS_LEVEL_1; lvl <= IS_LEVEL_2; lvl++) {
+		if (!(lvl & level))
+			continue;
+
+		if (refresh_interval < area->lsp_refresh[lvl - 1]) {
+			vty_out(vty,
+				"Level %d Max LSP lifetime %us must be 300s greater than "
+				"the configured LSP refresh interval %us\n",
+				lvl, interval, area->lsp_refresh[lvl - 1]);
+			vty_out(vty,
+				"Automatically reducing level %d LSP refresh interval "
+				"to %us\n",
+				lvl, refresh_interval);
+			set_refresh_interval[lvl - 1] = 1;
+
+			if (refresh_interval
+			    <= area->lsp_gen_interval[lvl - 1]) {
+				vty_out(vty,
+					"LSP refresh interval %us must be greater than "
+					"the configured LSP gen interval %us\n",
+					refresh_interval,
+					area->lsp_gen_interval[lvl - 1]);
+				return CMD_WARNING_CONFIG_FAILED;
+			}
+		}
+	}
+
+	for (lvl = IS_LEVEL_1; lvl <= IS_LEVEL_2; lvl++) {
+		if (!(lvl & level))
+			continue;
+		isis_area_max_lsp_lifetime_set(area, lvl, interval);
+		if (set_refresh_interval[lvl - 1])
+			isis_area_lsp_refresh_set(area, lvl, refresh_interval);
+	}
+
+	return CMD_SUCCESS;
+}
+
+DEFUN (max_lsp_lifetime,
+       max_lsp_lifetime_cmd,
+       "max-lsp-lifetime (350-65535)",
+       "Maximum LSP lifetime\n"
+       "LSP lifetime in seconds\n")
+{
+	int lifetime = atoi(argv[1]->arg);
+
+	return isis_vty_max_lsp_lifetime_set(vty, IS_LEVEL_1_AND_2, lifetime);
+}
+
+
+DEFUN (no_max_lsp_lifetime,
+       no_max_lsp_lifetime_cmd,
+       "no max-lsp-lifetime [(350-65535)]",
+       NO_STR
+       "Maximum LSP lifetime\n"
+       "LSP lifetime in seconds\n")
+{
+	return isis_vty_max_lsp_lifetime_set(vty, IS_LEVEL_1_AND_2,
+					     DEFAULT_LSP_LIFETIME);
+}
+
 void isis_vty_daemon_init(void)
 {
 	install_element(ROUTER_NODE, &fabric_tier_cmd);
@@ -499,4 +568,7 @@ void isis_vty_daemon_init(void)
 
 	install_element(ROUTER_NODE, &lsp_refresh_interval_cmd);
 	install_element(ROUTER_NODE, &no_lsp_refresh_interval_cmd);
+
+	install_element(ROUTER_NODE, &max_lsp_lifetime_cmd);
+	install_element(ROUTER_NODE, &no_max_lsp_lifetime_cmd);
 }