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Add hash support to link cache

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This patch adds keygen function to link cache

Signed-off-by: Shrijeet Mukherjee <shm@cumulusnetworks.com>
Signed-off-by: Nolan Leake <nolan@cumulusnetworks.com>
Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Reviewed-by: Wilson Kok <wkok@cumulusnetworks.com>
Signed-off-by: Thomas Graf <tgraf@suug.ch>
This commit is contained in:
roopa 2012-11-09 14:41:34 -08:00 • committed by Thomas Graf
parent 55c0e036b0
commit e16e8fdcdb
1 changed files with 23 additions and 0 deletions
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23
lib/route/link.c
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@ -23,6 +23,7 @@
#include <netlink/attr.h>
#include <netlink/utils.h>
#include <netlink/object.h>
#include <netlink/hashtable.h>
#include <netlink/route/rtnl.h>
#include <netlink/route/link.h>
#include <netlink/route/link/api.h>
@ -799,6 +800,27 @@ static int link_handle_event(struct nl_object *a, struct rtnl_link_event_cb *cb)
}
#endif
static void link_keygen(struct nl_object *obj, uint32_t *hashkey,
uint32_t table_sz)
{
struct rtnl_link *link = (struct rtnl_link *) obj;
unsigned int lkey_sz;
struct link_hash_key {
uint32_t l_index;
} __attribute__((packed)) lkey;
lkey_sz = sizeof(lkey);
lkey.l_index = link->l_index;
*hashkey = nl_hash(&lkey, lkey_sz, 0) % table_sz;
NL_DBG(5, "link %p key (dev %d) keysz %d, hash 0x%x\n",
link, lkey.l_index, lkey_sz, *hashkey);
return;
}
static int link_compare(struct nl_object *_a, struct nl_object *_b,
uint32_t attrs, int flags)
{
@ -2500,6 +2522,7 @@ static struct nl_object_ops link_obj_ops = {
[NL_DUMP_STATS] = link_dump_stats,
},
.oo_compare = link_compare,
.oo_keygen = link_keygen,
.oo_attrs2str = link_attrs2str,
.oo_id_attrs = LINK_ATTR_IFINDEX,
};