tipc: Remove prototype code for supporting inter-cluster routing
Eliminates routines and data structures that were intended to allow
TIPC to route messages to other clusters. Currently, TIPC supports only
networks consisting of a single cluster within a single zone, so this
code is unnecessary.
Signed-off-by: Allan Stephens <Allan.Stephens@windriver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/tipc/cluster.c b/net/tipc/cluster.c
index 6bc9f07..ba6f5bf 100644
--- a/net/tipc/cluster.c
+++ b/net/tipc/cluster.c
@@ -38,9 +38,6 @@
#include "cluster.h"
#include "link.h"
-static void tipc_cltr_multicast(struct cluster *c_ptr, struct sk_buff *buf,
- u32 lower, u32 upper);
-
struct tipc_node **tipc_local_nodes = NULL;
struct tipc_node_map tipc_cltr_bcast_nodes = {0,{0,}};
@@ -65,8 +62,7 @@
return NULL;
}
- if (in_own_cluster(addr))
- tipc_local_nodes = c_ptr->nodes;
+ tipc_local_nodes = c_ptr->nodes;
c_ptr->highest_node = 0;
tipc_net.clusters[1] = c_ptr;
@@ -101,278 +97,6 @@
}
/**
- * tipc_cltr_select_router - select router to a cluster
- *
- * Uses deterministic and fair algorithm.
- */
-
-u32 tipc_cltr_select_router(struct cluster *c_ptr, u32 ref)
-{
- u32 n_num;
- u32 ulim = c_ptr->highest_node;
- u32 mask;
- u32 tstart;
-
- assert(!in_own_cluster(c_ptr->addr));
- if (!ulim)
- return 0;
-
- /* Start entry must be random */
- mask = tipc_max_nodes;
- while (mask > ulim)
- mask >>= 1;
- tstart = ref & mask;
- n_num = tstart;
-
- /* Lookup upwards with wrap-around */
- do {
- if (tipc_node_is_up(c_ptr->nodes[n_num]))
- break;
- } while (++n_num <= ulim);
- if (n_num > ulim) {
- n_num = 1;
- do {
- if (tipc_node_is_up(c_ptr->nodes[n_num]))
- break;
- } while (++n_num < tstart);
- if (n_num == tstart)
- return 0;
- }
- assert(n_num <= ulim);
- return tipc_node_select_router(c_ptr->nodes[n_num], ref);
-}
-
-/**
- * tipc_cltr_select_node - select destination node within a remote cluster
- *
- * Uses deterministic and fair algorithm.
- */
-
-struct tipc_node *tipc_cltr_select_node(struct cluster *c_ptr, u32 selector)
-{
- u32 n_num;
- u32 mask = tipc_max_nodes;
- u32 start_entry;
-
- assert(!in_own_cluster(c_ptr->addr));
- if (!c_ptr->highest_node)
- return NULL;
-
- /* Start entry must be random */
- while (mask > c_ptr->highest_node) {
- mask >>= 1;
- }
- start_entry = (selector & mask) ? selector & mask : 1u;
- assert(start_entry <= c_ptr->highest_node);
-
- /* Lookup upwards with wrap-around */
- for (n_num = start_entry; n_num <= c_ptr->highest_node; n_num++) {
- if (tipc_node_has_active_links(c_ptr->nodes[n_num]))
- return c_ptr->nodes[n_num];
- }
- for (n_num = 1; n_num < start_entry; n_num++) {
- if (tipc_node_has_active_links(c_ptr->nodes[n_num]))
- return c_ptr->nodes[n_num];
- }
- return NULL;
-}
-
-/*
- * Routing table management: See description in node.c
- */
-
-static struct sk_buff *tipc_cltr_prepare_routing_msg(u32 data_size, u32 dest)
-{
- u32 size = INT_H_SIZE + data_size;
- struct sk_buff *buf = tipc_buf_acquire(size);
- struct tipc_msg *msg;
-
- if (buf) {
- msg = buf_msg(buf);
- memset((char *)msg, 0, size);
- tipc_msg_init(msg, ROUTE_DISTRIBUTOR, 0, INT_H_SIZE, dest);
- }
- return buf;
-}
-
-void tipc_cltr_bcast_new_route(struct cluster *c_ptr, u32 dest,
- u32 lower, u32 upper)
-{
- struct sk_buff *buf = tipc_cltr_prepare_routing_msg(0, c_ptr->addr);
- struct tipc_msg *msg;
-
- if (buf) {
- msg = buf_msg(buf);
- msg_set_remote_node(msg, dest);
- msg_set_type(msg, ROUTE_ADDITION);
- tipc_cltr_multicast(c_ptr, buf, lower, upper);
- } else {
- warn("Memory squeeze: broadcast of new route failed\n");
- }
-}
-
-void tipc_cltr_bcast_lost_route(struct cluster *c_ptr, u32 dest,
- u32 lower, u32 upper)
-{
- struct sk_buff *buf = tipc_cltr_prepare_routing_msg(0, c_ptr->addr);
- struct tipc_msg *msg;
-
- if (buf) {
- msg = buf_msg(buf);
- msg_set_remote_node(msg, dest);
- msg_set_type(msg, ROUTE_REMOVAL);
- tipc_cltr_multicast(c_ptr, buf, lower, upper);
- } else {
- warn("Memory squeeze: broadcast of lost route failed\n");
- }
-}
-
-void tipc_cltr_send_ext_routes(struct cluster *c_ptr, u32 dest)
-{
- struct sk_buff *buf;
- struct tipc_msg *msg;
- u32 highest = c_ptr->highest_node;
- u32 n_num;
- int send = 0;
-
- if (in_own_cluster(c_ptr->addr))
- return;
- assert(in_own_cluster(dest));
- highest = c_ptr->highest_node;
- buf = tipc_cltr_prepare_routing_msg(highest + 1, c_ptr->addr);
- if (buf) {
- msg = buf_msg(buf);
- msg_set_remote_node(msg, c_ptr->addr);
- msg_set_type(msg, EXT_ROUTING_TABLE);
- for (n_num = 1; n_num <= highest; n_num++) {
- if (c_ptr->nodes[n_num] &&
- tipc_node_has_active_links(c_ptr->nodes[n_num])) {
- send = 1;
- msg_set_dataoctet(msg, n_num);
- }
- }
- if (send)
- tipc_link_send(buf, dest, dest);
- else
- buf_discard(buf);
- } else {
- warn("Memory squeeze: broadcast of external route failed\n");
- }
-}
-
-void tipc_cltr_recv_routing_table(struct sk_buff *buf)
-{
- struct tipc_msg *msg = buf_msg(buf);
- struct cluster *c_ptr;
- struct tipc_node *n_ptr;
- unchar *node_table;
- u32 table_size;
- u32 router;
- u32 rem_node = msg_remote_node(msg);
- u32 z_num;
- u32 c_num;
- u32 n_num;
-
- c_ptr = tipc_cltr_find(rem_node);
- if (!c_ptr) {
- c_ptr = tipc_cltr_create(rem_node);
- if (!c_ptr) {
- buf_discard(buf);
- return;
- }
- }
-
- node_table = buf->data + msg_hdr_sz(msg);
- table_size = msg_size(msg) - msg_hdr_sz(msg);
- router = msg_prevnode(msg);
- z_num = tipc_zone(rem_node);
- c_num = tipc_cluster(rem_node);
-
- switch (msg_type(msg)) {
- case EXT_ROUTING_TABLE:
- for (n_num = 1; n_num < table_size; n_num++) {
- if (node_table[n_num]) {
- u32 addr = tipc_addr(z_num, c_num, n_num);
- n_ptr = c_ptr->nodes[n_num];
- if (!n_ptr) {
- n_ptr = tipc_node_create(addr);
- }
- if (n_ptr)
- tipc_node_add_router(n_ptr, router);
- }
- }
- break;
- case SLAVE_ROUTING_TABLE:
- assert(in_own_cluster(c_ptr->addr));
- break;
- case ROUTE_ADDITION:
- assert(!in_own_cluster(c_ptr->addr));
- n_ptr = c_ptr->nodes[tipc_node(rem_node)];
- if (!n_ptr)
- n_ptr = tipc_node_create(rem_node);
- if (n_ptr)
- tipc_node_add_router(n_ptr, router);
- break;
- case ROUTE_REMOVAL:
- assert(!in_own_cluster(c_ptr->addr));
- n_ptr = c_ptr->nodes[tipc_node(rem_node)];
- if (n_ptr)
- tipc_node_remove_router(n_ptr, router);
- break;
- default:
- assert(!"Illegal routing manager message received\n");
- }
- buf_discard(buf);
-}
-
-void tipc_cltr_remove_as_router(struct cluster *c_ptr, u32 router)
-{
- u32 n_num;
-
- if (in_own_cluster(c_ptr->addr))
- return;
-
- for (n_num = 1; n_num <= c_ptr->highest_node; n_num++) {
- if (c_ptr->nodes[n_num]) {
- tipc_node_remove_router(c_ptr->nodes[n_num], router);
- }
- }
-}
-
-/**
- * tipc_cltr_multicast - multicast message to local nodes
- */
-
-static void tipc_cltr_multicast(struct cluster *c_ptr, struct sk_buff *buf,
- u32 lower, u32 upper)
-{
- struct sk_buff *buf_copy;
- struct tipc_node *n_ptr;
- u32 n_num;
- u32 tstop;
-
- assert(lower <= upper);
- assert((lower >= 1) && (lower <= tipc_max_nodes));
- assert((upper >= 1) && (upper <= tipc_max_nodes));
- assert(in_own_cluster(c_ptr->addr));
-
- tstop = c_ptr->highest_node;
- if (tstop > upper)
- tstop = upper;
- for (n_num = lower; n_num <= tstop; n_num++) {
- n_ptr = c_ptr->nodes[n_num];
- if (n_ptr && tipc_node_has_active_links(n_ptr)) {
- buf_copy = skb_copy(buf, GFP_ATOMIC);
- if (buf_copy == NULL)
- break;
- msg_set_destnode(buf_msg(buf_copy), n_ptr->addr);
- tipc_link_send(buf_copy, n_ptr->addr, n_ptr->addr);
- }
- }
- buf_discard(buf);
-}
-
-/**
* tipc_cltr_broadcast - broadcast message to all nodes within cluster
*/
@@ -385,7 +109,6 @@
if (tipc_mode == TIPC_NET_MODE) {
c_ptr = tipc_cltr_find(tipc_own_addr);
- assert(in_own_cluster(c_ptr->addr)); /* For now */
/* Send to nodes */
for (n_num = 1; n_num <= c_ptr->highest_node; n_num++) {