Add gpe native-forward static route support
Change-Id: I744e7d64d94dbb302f2c1246663480f720672ee2
Signed-off-by: Florin Coras <fcoras@cisco.com>
diff --git a/src/vnet/lisp-gpe/lisp_gpe.c b/src/vnet/lisp-gpe/lisp_gpe.c
index 052410e..ea6c143 100644
--- a/src/vnet/lisp-gpe/lisp_gpe.c
+++ b/src/vnet/lisp-gpe/lisp_gpe.c
@@ -22,6 +22,9 @@
#include <vnet/lisp-gpe/lisp_gpe_fwd_entry.h>
#include <vnet/lisp-gpe/lisp_gpe_adjacency.h>
#include <vnet/lisp-gpe/lisp_gpe_tenant.h>
+#include <vnet/fib/fib_path_list.h>
+#include <vnet/fib/fib_table.h>
+#include <vnet/fib/fib_internal.h>
/** LISP-GPE global state */
lisp_gpe_main_t lisp_gpe_main;
@@ -387,6 +390,194 @@
};
/* *INDENT-ON* */
+/** CLI command to show GPE fwd native route path. */
+static clib_error_t *
+gpe_show_native_fwd_rpath_command_fn (vlib_main_t * vm,
+ unformat_input_t * input,
+ vlib_cli_command_t * cmd)
+{
+ lisp_gpe_main_t *lgm = &lisp_gpe_main;
+ fib_route_path_t *rpath;
+
+ if (vec_len (lgm->native_fwd_rpath[IP4]))
+ {
+ vec_foreach (rpath, lgm->native_fwd_rpath[IP4])
+ {
+ vlib_cli_output (vm, "nh: %U fib_index %u sw_if_index %u",
+ format_ip46_address, &rpath->frp_addr, 1,
+ rpath->frp_fib_index, rpath->frp_sw_if_index);
+ }
+ }
+ if (vec_len (lgm->native_fwd_rpath[IP6]))
+ {
+ vec_foreach (rpath, lgm->native_fwd_rpath[IP6])
+ {
+ vlib_cli_output (vm, "nh: %U fib_index %u sw_if_index %u",
+ format_ip46_address, &rpath->frp_addr, 1,
+ rpath->frp_fib_index, rpath->frp_sw_if_index);
+ }
+ }
+ return 0;
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (gpe_show_native_fwd_rpath_command) = {
+ .path = "show gpe native-forward",
+ .short_help = "show gpe native-forward",
+ .function = gpe_show_native_fwd_rpath_command_fn,
+};
+/* *INDENT-ON* */
+
+void
+gpe_update_native_fwd_path (u8 ip_version)
+{
+ lisp_gpe_main_t *lgm = vnet_lisp_gpe_get_main ();
+ lisp_gpe_fwd_entry_t *lfe;
+ fib_prefix_t fib_prefix;
+ u32 *lfei;
+
+ vec_foreach (lfei, lgm->native_fwd_lfes[ip_version])
+ {
+ lfe = pool_elt_at_index (lgm->lisp_fwd_entry_pool, lfei[0]);
+ ip_prefix_to_fib_prefix (&lfe->key->rmt.ippref, &fib_prefix);
+ fib_table_entry_update (lfe->eid_fib_index, &fib_prefix, FIB_SOURCE_LISP,
+ FIB_ENTRY_FLAG_NONE,
+ lgm->native_fwd_rpath[ip_version]);
+ }
+}
+
+int
+vnet_gpe_add_del_native_fwd_rpath (vnet_gpe_native_fwd_rpath_args_t * a)
+{
+ lisp_gpe_main_t *lgm = vnet_lisp_gpe_get_main ();
+ fib_route_path_t *rpath;
+ u8 ip_version;
+
+ ip_version = a->rpath.frp_proto == FIB_PROTOCOL_IP4 ? IP4 : IP6;
+
+ if (a->is_add)
+ {
+ vec_add1 (lgm->native_fwd_rpath[ip_version], a->rpath);
+ }
+ else
+ {
+ vec_foreach (rpath, lgm->native_fwd_rpath[ip_version])
+ {
+ if (!fib_route_path_cmp (rpath, &a->rpath))
+ {
+ vec_del1 (lgm->native_fwd_rpath[ip_version],
+ rpath - lgm->native_fwd_rpath[ip_version]);
+ break;
+ }
+ }
+ }
+ gpe_update_native_fwd_path (ip_version);
+ return 0;
+}
+
+/**
+ * CLI command to add action for native forward.
+ */
+static clib_error_t *
+gpe_native_forward_command_fn (vlib_main_t * vm, unformat_input_t * input,
+ vlib_cli_command_t * cmd)
+{
+ vnet_main_t *vnm = vnet_get_main ();
+ unformat_input_t _line_input, *line_input = &_line_input;
+ vnet_api_error_t rv;
+ fib_route_path_t rpath;
+ u32 table_id = ~0;
+ vnet_gpe_native_fwd_rpath_args_t _a, *a = &_a;
+ u8 is_add = 1;
+ clib_error_t *error = 0;
+
+ /* Get a line of input. */
+ if (!unformat_user (input, unformat_line_input, line_input))
+ return 0;
+
+ memset (&rpath, 0, sizeof (rpath));
+
+ while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (line_input, "table %d", &table_id))
+ ;
+ else if (unformat (line_input, "del"))
+ is_add = 0;
+ else if (unformat (line_input, "via %U %U",
+ unformat_ip4_address,
+ &rpath.frp_addr.ip4,
+ unformat_vnet_sw_interface, vnm,
+ &rpath.frp_sw_if_index))
+ {
+ rpath.frp_weight = 1;
+ rpath.frp_proto = FIB_PROTOCOL_IP4;
+ }
+ else if (unformat (line_input, "via %U %U",
+ unformat_ip6_address,
+ &rpath.frp_addr.ip6,
+ unformat_vnet_sw_interface, vnm,
+ &rpath.frp_sw_if_index))
+ {
+ rpath.frp_weight = 1;
+ rpath.frp_proto = FIB_PROTOCOL_IP6;
+ }
+ else if (unformat (line_input, "via %U",
+ unformat_ip4_address, &rpath.frp_addr.ip4))
+ {
+ rpath.frp_weight = 1;
+ rpath.frp_sw_if_index = ~0;
+ rpath.frp_proto = FIB_PROTOCOL_IP4;
+ }
+ else if (unformat (line_input, "via %U",
+ unformat_ip6_address, &rpath.frp_addr.ip6))
+ {
+ rpath.frp_weight = 1;
+ rpath.frp_sw_if_index = ~0;
+ rpath.frp_proto = FIB_PROTOCOL_IP6;
+ }
+ else
+ {
+ return clib_error_return (0, "parse error: '%U'",
+ format_unformat_error, line_input);
+ }
+ }
+
+ if ((u32) ~ 0 == table_id)
+ {
+ rpath.frp_fib_index = 0;
+ }
+ else
+ {
+ rpath.frp_fib_index = fib_table_find (rpath.frp_proto, table_id);
+ if ((u32) ~ 0 == rpath.frp_fib_index)
+ {
+ error = clib_error_return (0, "Nonexistent table id %d", table_id);
+ goto done;
+ }
+ }
+
+ a->rpath = rpath;
+ a->is_add = is_add;
+
+ rv = vnet_gpe_add_del_native_fwd_rpath (a);
+ if (rv)
+ {
+ return clib_error_return (0, "Error: couldn't add path!");
+ }
+
+done:
+ return error;
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (gpe_native_forward_command) = {
+ .path = "gpe native-forward",
+ .short_help = "gpe native-forward [del] via <nh-ip-addr> [iface] "
+ "[table <table>]",
+ .function = gpe_native_forward_command_fn,
+};
+/* *INDENT-ON* */
+
/** Format LISP-GPE status. */
u8 *
format_vnet_lisp_gpe_status (u8 * s, va_list * args)