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pkt_sched: Get rid of u32_list.

Browse source 
The u32_list is just an indirect way of maintaining a reference
to a U32 node on a per-qdisc basis.

Just add an explicit node pointer for u32 to struct Qdisc an do
away with this global list.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2008-07-18 20:54:17 -07:00
parent 8913336a7e
commit 72b25a913e
2 changed files with 5 additions and 15 deletions
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2
include/net/sch_generic.h
View file

@ -56,6 +56,8 @@ struct Qdisc
int (*reshape_fail)(struct sk_buff *skb,
struct Qdisc *q);
void *u32_node;
/* This field is deprecated, but it is still used by CBQ
* and it will live until better solution will be invented.
*/

18
net/sched/cls_u32.c
View file

@ -75,7 +75,6 @@ struct tc_u_hnode
struct tc_u_common
{
struct tc_u_common *next;
struct tc_u_hnode *hlist;
struct Qdisc *q;
int refcnt;
@ -87,8 +86,6 @@ static const struct tcf_ext_map u32_ext_map = {
.police = TCA_U32_POLICE
};
static struct tc_u_common *u32_list;
static __inline__ unsigned u32_hash_fold(__be32 key, struct tc_u32_sel *sel, u8 fshift)
{
unsigned h = ntohl(key & sel->hmask)>>fshift;
@ -287,9 +284,7 @@ static int u32_init(struct tcf_proto *tp)
struct tc_u_hnode *root_ht;
struct tc_u_common *tp_c;
for (tp_c = u32_list; tp_c; tp_c = tp_c->next)
if (tp_c->q == tp->q)
break;
tp_c = tp->q->u32_node;
root_ht = kzalloc(sizeof(*root_ht), GFP_KERNEL);
if (root_ht == NULL)
@ -307,8 +302,7 @@ static int u32_init(struct tcf_proto *tp)
return -ENOBUFS;
}
tp_c->q = tp->q;
tp_c->next = u32_list;
u32_list = tp_c;
tp->q->u32_node = tp_c;
}
tp_c->refcnt++;
@ -402,14 +396,8 @@ static void u32_destroy(struct tcf_proto *tp)
if (--tp_c->refcnt == 0) {
struct tc_u_hnode *ht;
struct tc_u_common **tp_cp;
for (tp_cp = &u32_list; *tp_cp; tp_cp = &(*tp_cp)->next) {
if (*tp_cp == tp_c) {
*tp_cp = tp_c->next;
break;
}
}
tp->q->u32_node = NULL;
for (ht = tp_c->hlist; ht; ht = ht->next) {
ht->refcnt--;