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authorBernard Pidoux <f6bvp@free.fr>2011-02-14 13:31:09 -0800
committerDavid S. Miller <davem@davemloft.net>2011-02-14 13:31:09 -0800
commitc5d8b24ad0a9a45e163a6769b4eb7e7f1fb9aa7f (patch)
tree2ad755121a6f6a900d374ad27257d3196bb2276e /net/rose
parent31d409373cca3517a30540b51f55dcb1f5af0d49 (diff)
downloadlinux-stericsson-c5d8b24ad0a9a45e163a6769b4eb7e7f1fb9aa7f.tar.gz
ROSE: rose AX25 packet routing improvement
FPAC AX25 packet application is using Linux kernel ROSE routing skills in order to connect or send packets to remote stations knowing their ROSE address via a network of interconnected nodes. Each FPAC node has a ROSE routing table that Linux ROSE module is looking at each time a ROSE frame is relayed by the node or when a connect request to a neighbor node is received. A previous patch improved the system time response by looking at already established routes each time the system was looking for a route to relay a frame. If a neighbor node routing the destination address was already connected, then the frame would be sent through him. If not, a connection request would be issued. The present patch extends the same routing capability to a connect request asked by a user locally connected into an FPAC node. Without this patch, a connect request was not well handled unless it was directed to an immediate connected neighbor of the local node. Implemented at a number of ROSE FPAC node stations, the present patch improved dramatically FPAC ROSE routing time response and efficiency. Signed-off-by: Bernard Pidoux <f6bvp@free.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/rose')
-rw-r--r--net/rose/rose_route.c28
1 files changed, 16 insertions, 12 deletions
diff --git a/net/rose/rose_route.c b/net/rose/rose_route.c
index b4fdaac233f7..88a77e90e7e8 100644
--- a/net/rose/rose_route.c
+++ b/net/rose/rose_route.c
@@ -674,29 +674,34 @@ struct rose_route *rose_route_free_lci(unsigned int lci, struct rose_neigh *neig
* Find a neighbour or a route given a ROSE address.
*/
struct rose_neigh *rose_get_neigh(rose_address *addr, unsigned char *cause,
- unsigned char *diagnostic, int new)
+ unsigned char *diagnostic, int route_frame)
{
struct rose_neigh *res = NULL;
struct rose_node *node;
int failed = 0;
int i;
- if (!new) spin_lock_bh(&rose_node_list_lock);
+ if (!route_frame) spin_lock_bh(&rose_node_list_lock);
for (node = rose_node_list; node != NULL; node = node->next) {
if (rosecmpm(addr, &node->address, node->mask) == 0) {
for (i = 0; i < node->count; i++) {
- if (new) {
- if (node->neighbour[i]->restarted) {
- res = node->neighbour[i];
- goto out;
- }
+ if (node->neighbour[i]->restarted) {
+ res = node->neighbour[i];
+ goto out;
}
- else {
+ }
+ }
+ }
+ if (!route_frame) { /* connect request */
+ for (node = rose_node_list; node != NULL; node = node->next) {
+ if (rosecmpm(addr, &node->address, node->mask) == 0) {
+ for (i = 0; i < node->count; i++) {
if (!rose_ftimer_running(node->neighbour[i])) {
res = node->neighbour[i];
+ failed = 0;
goto out;
- } else
- failed = 1;
+ }
+ failed = 1;
}
}
}
@@ -711,8 +716,7 @@ struct rose_neigh *rose_get_neigh(rose_address *addr, unsigned char *cause,
}
out:
- if (!new) spin_unlock_bh(&rose_node_list_lock);
-
+ if (!route_frame) spin_unlock_bh(&rose_node_list_lock);
return res;
}