doc, zebra: Remove "table X" command

This command is broken and has been broken since the introduction
of vrf's.  Since no-one has complained it is safe to assume that
there is no call for this specialized linux command.  Remove
from the system with extreme prejudice.

Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>

doc/user/zebra.rst

@@ -268,14 +268,6 @@ Link Parameters Commands
    for InterASv2 link in OSPF (RFC5392).  Note that this option is not yet
    supported for ISIS (RFC5316).
 
-.. index:: table TABLENO
-.. clicmd:: table TABLENO
-
-   Select the primary kernel routing table to be used. This only works for
-   kernels supporting multiple routing tables (like GNU/Linux 2.2.x and later).
-   After setting TABLENO with this command, static routes defined after this
-   are added to the specified table.
-
 .. index:: ip nht resolve-via-default
 .. clicmd:: ip nht resolve-via-default
 

zebra/redistribute.c

@@ -612,7 +612,7 @@ int zebra_add_import_table_entry(struct route_node *rn, struct route_entry *re,
 	newre->flags = re->flags;
 	newre->metric = re->metric;
 	newre->mtu = re->mtu;
-	newre->table = zrouter.rtm_table_default;
+	newre->table = 0;
 	newre->nexthop_num = 0;
 	newre->uptime = time(NULL);
 	newre->instance = re->table;
@@ -632,8 +632,8 @@ int zebra_del_import_table_entry(struct route_node *rn, struct route_entry *re)
 	prefix_copy(&p, &rn->p);
 
 	rib_delete(afi, SAFI_UNICAST, re->vrf_id, ZEBRA_ROUTE_TABLE, re->table,
-		   re->flags, &p, NULL, re->ng.nexthop,
+		   re->flags, &p, NULL, re->ng.nexthop, 0, re->metric,
-		   zrouter.rtm_table_default, re->metric, re->distance, false);
+		   re->distance, false);
 
 	return 0;
 }
@@ -647,8 +647,7 @@ int zebra_import_table(afi_t afi, uint32_t table_id, uint32_t distance,
 	struct route_node *rn;
 
 	if (!is_zebra_valid_kernel_table(table_id)
-	    || ((table_id == RT_TABLE_MAIN)
+	    || (table_id == RT_TABLE_MAIN))
-		|| (table_id == zrouter.rtm_table_default)))
 		return (-1);
 
 	if (afi >= AFI_MAX)

zebra/zebra_rib.c

@@ -165,8 +165,7 @@ int is_zebra_valid_kernel_table(uint32_t table_id)
 
 int is_zebra_main_routing_table(uint32_t table_id)
 {
-	if ((table_id == RT_TABLE_MAIN)
+	if (table_id == RT_TABLE_MAIN)
-	    || (table_id == zrouter.rtm_table_default))
 		return 1;
 	return 0;
 }

zebra/zebra_router.c

@@ -226,7 +226,6 @@ void zebra_router_init(void)
 {
 	zrouter.sequence_num = 0;
 
-	zrouter.rtm_table_default = 0;
 	zrouter.packets_to_process = ZEBRA_ZAPI_PACKETS_TO_PROCESS;
 
 	zebra_vxlan_init();

zebra/zebra_router.h

@@ -89,9 +89,6 @@ struct zebra_router {
 	/* A sequence number used for tracking routes */
 	_Atomic uint32_t sequence_num;
 
-	/* The default table used for this router */
-	uint32_t rtm_table_default;
-
 	/* rib work queue */
 #define ZEBRA_RIB_PROCESS_HOLD_TIME 10
 #define ZEBRA_RIB_PROCESS_RETRY_TIME 1

zebra/zebra_vrf.c

@@ -326,15 +326,13 @@ struct route_table *zebra_vrf_table_with_table_id(afi_t afi, safi_t safi,
 		return NULL;
 
 	if (vrf_id == VRF_DEFAULT) {
-		if (table_id == RT_TABLE_MAIN
+		if (table_id == RT_TABLE_MAIN)
-		    || table_id == zrouter.rtm_table_default)
 			table = zebra_vrf_table(afi, safi, vrf_id);
 		else
 			table = zebra_vrf_other_route_table(afi, table_id,
 							    vrf_id);
 	} else if (vrf_is_backend_netns()) {
-		if (table_id == RT_TABLE_MAIN
+		if (table_id == RT_TABLE_MAIN)
-		    || table_id == zrouter.rtm_table_default)
 			table = zebra_vrf_table(afi, safi, vrf_id);
 		else
 			table = zebra_vrf_other_route_table(afi, table_id,
@@ -452,10 +450,8 @@ struct route_table *zebra_vrf_other_route_table(afi_t afi, uint32_t table_id,
 	if (afi >= AFI_MAX)
 		return NULL;
 
-	if ((table_id != RT_TABLE_MAIN)
+	if (table_id != RT_TABLE_MAIN) {
-	    && (table_id != zrouter.rtm_table_default)) {
+		if (zvrf->table_id == RT_TABLE_MAIN) {
-		if (zvrf->table_id == RT_TABLE_MAIN ||
-		    zvrf->table_id == zrouter.rtm_table_default) {
 			/* this VRF use default table
 			 * so in all cases, it does not use specific table
 			 * so it is possible to configure tables in this VRF

zebra/zebra_vty.c

@@ -2556,40 +2556,6 @@ static int config_write_protocol(struct vty *vty)
 	return 1;
 }
 
-#ifdef HAVE_NETLINK
-/* Display default rtm_table for all clients. */
-DEFUN (show_table,
-       show_table_cmd,
-       "show table",
-       SHOW_STR
-       "default routing table to use for all clients\n")
-{
-	vty_out(vty, "table %d\n", zrouter.rtm_table_default);
-	return CMD_SUCCESS;
-}
-
-DEFUN (config_table,
-       config_table_cmd,
-       "table TABLENO",
-       "Configure target kernel routing table\n"
-       "TABLE integer\n")
-{
-	zrouter.rtm_table_default = strtol(argv[1]->arg, (char **)0, 10);
-	return CMD_SUCCESS;
-}
-
-DEFUN (no_config_table,
-       no_config_table_cmd,
-       "no table [TABLENO]",
-       NO_STR
-       "Configure target kernel routing table\n"
-       "TABLE integer\n")
-{
-	zrouter.rtm_table_default = 0;
-	return CMD_SUCCESS;
-}
-#endif
-
 DEFUN (show_zebra,
        show_zebra_cmd,
        "show zebra",
@@ -2833,8 +2799,6 @@ DEFUN (zebra_show_routing_tables_summary,
 /* Table configuration write function. */
 static int config_write_table(struct vty *vty)
 {
-	if (zrouter.rtm_table_default)
-		vty_out(vty, "table %d\n", zrouter.rtm_table_default);
 	return 0;
 }
 
@@ -2938,12 +2902,6 @@ void zebra_vty_init(void)
 	install_element(CONFIG_NODE, &no_ip_forwarding_cmd);
 	install_element(ENABLE_NODE, &show_zebra_cmd);
 
-#ifdef HAVE_NETLINK
-	install_element(VIEW_NODE, &show_table_cmd);
-	install_element(CONFIG_NODE, &config_table_cmd);
-	install_element(CONFIG_NODE, &no_config_table_cmd);
-#endif /* HAVE_NETLINK */
-
 	install_element(VIEW_NODE, &show_ipv6_forwarding_cmd);
 	install_element(CONFIG_NODE, &ipv6_forwarding_cmd);
 	install_element(CONFIG_NODE, &no_ipv6_forwarding_cmd);

zebra/zserv.c

@@ -697,9 +697,6 @@ static struct zserv *zserv_client_create(int sock)
 	pthread_mutex_init(&client->obuf_mtx, NULL);
 	client->wb = buffer_new(0);
 
-	/* Set table number. */
-	client->rtm_table = zrouter.rtm_table_default;
-
 	atomic_store_explicit(&client->connect_time, (uint32_t) monotime(NULL),
 			      memory_order_relaxed);
 
@@ -907,7 +904,6 @@ static void zebra_show_client_detail(struct vty *vty, struct zserv *client)
 
 	vty_out(vty, "------------------------ \n");
 	vty_out(vty, "FD: %d \n", client->sock);
-	vty_out(vty, "Route Table ID: %d \n", client->rtm_table);
 
 	connect_time = (time_t) atomic_load_explicit(&client->connect_time,
 						     memory_order_relaxed);

zebra/zserv.h

@@ -83,9 +83,6 @@ struct zserv {
 	/* Threads for the main pthread */
 	struct thread *t_cleanup;
 
-	/* default routing table this client munges */
-	int rtm_table;
-
 	/* This client's redistribute flag. */
 	struct redist_proto mi_redist[AFI_MAX][ZEBRA_ROUTE_MAX];
 	vrf_bitmap_t redist[AFI_MAX][ZEBRA_ROUTE_MAX];