openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

[BRIDGE]: Kill clone argument to br_flood_* 

The clone argument is only used by one caller and that caller can clone
the packet itself.  This patch moves the clone call into the caller and
kills the clone argument.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Herbert Xu 2007-09-16 16:20:48 -07:00 committed by David S. Miller
parent 9355ec2339
commit e081e1e3ef
4 changed files with 31 additions and 50 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
net/bridge/br_device.c
View File

@ -41,11 +41,11 @@ int br_dev_xmit(struct sk_buff *skb, struct net_device *dev)
skb_pull(skb, ETH_HLEN);
if (dest[0] & 1)
br_flood_deliver(br, skb, 0);
br_flood_deliver(br, skb);
else if ((dst = __br_fdb_get(br, dest)) != NULL)
br_deliver(dst->dst, skb);
else
br_flood_deliver(br, skb, 0);
br_flood_deliver(br, skb);
return 0;
}

21
net/bridge/br_forward.c
View File

@ -100,24 +100,13 @@ void br_forward(const struct net_bridge_port *to, struct sk_buff *skb)
}
/* called under bridge lock */
static void br_flood(struct net_bridge *br, struct sk_buff *skb, int clone,
static void br_flood(struct net_bridge *br, struct sk_buff *skb,
void (*__packet_hook)(const struct net_bridge_port *p,
struct sk_buff *skb))
{
struct net_bridge_port *p;
struct net_bridge_port *prev;
if (clone) {
struct sk_buff *skb2;
if ((skb2 = skb_clone(skb, GFP_ATOMIC)) == NULL) {
br->statistics.tx_dropped++;
return;
}
skb = skb2;
}
prev = NULL;
list_for_each_entry_rcu(p, &br->port_list, list) {
@ -148,13 +137,13 @@ static void br_flood(struct net_bridge *br, struct sk_buff *skb, int clone,
/* called with rcu_read_lock */
void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb, int clone)
void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb)
{
br_flood(br, skb, clone, __br_deliver);
br_flood(br, skb, __br_deliver);
}
/* called under bridge lock */
void br_flood_forward(struct net_bridge *br, struct sk_buff *skb, int clone)
void br_flood_forward(struct net_bridge *br, struct sk_buff *skb)
{
br_flood(br, skb, clone, __br_forward);
br_flood(br, skb, __br_forward);
}

48
net/bridge/br_input.c
View File

@ -43,7 +43,7 @@ int br_handle_frame_finish(struct sk_buff *skb)
struct net_bridge_port *p = rcu_dereference(skb->dev->br_port);
struct net_bridge *br;
struct net_bridge_fdb_entry *dst;
int passedup = 0;
struct sk_buff *skb2;
if (!p || p->state == BR_STATE_DISABLED)
goto drop;
@ -55,40 +55,36 @@ int br_handle_frame_finish(struct sk_buff *skb)
if (p->state == BR_STATE_LEARNING)
goto drop;
if (br->dev->flags & IFF_PROMISC) {
struct sk_buff *skb2;
/* The packet skb2 goes to the local host (NULL to skip). */
skb2 = NULL;
skb2 = skb_clone(skb, GFP_ATOMIC);
if (skb2 != NULL) {
passedup = 1;
br_pass_frame_up(br, skb2);
}
}
if (br->dev->flags & IFF_PROMISC)
skb2 = skb;
dst = NULL;
if (is_multicast_ether_addr(dest)) {
br->statistics.multicast++;
br_flood_forward(br, skb, !passedup);
if (!passedup)
br_pass_frame_up(br, skb);
goto out;
skb2 = skb;
} else if ((dst = __br_fdb_get(br, dest)) && dst->is_local) {
skb2 = skb;
/* Do not forward the packet since it's local. */
skb = NULL;
}
dst = __br_fdb_get(br, dest);
if (dst != NULL && dst->is_local) {
if (!passedup)
br_pass_frame_up(br, skb);
if (skb2 == skb)
skb2 = skb_clone(skb, GFP_ATOMIC);
if (skb2)
br_pass_frame_up(br, skb2);
if (skb) {
if (dst)
br_forward(dst->dst, skb);
else
kfree_skb(skb);
goto out;
br_flood_forward(br, skb);
}
if (dst != NULL) {
br_forward(dst->dst, skb);
goto out;
}
br_flood_forward(br, skb, 0);
out:
return 0;
drop:

8
net/bridge/br_private.h
View File

@ -170,12 +170,8 @@ extern int br_dev_queue_push_xmit(struct sk_buff *skb);
extern void br_forward(const struct net_bridge_port *to,
struct sk_buff *skb);
extern int br_forward_finish(struct sk_buff *skb);
extern void br_flood_deliver(struct net_bridge *br,
struct sk_buff *skb,
int clone);
extern void br_flood_forward(struct net_bridge *br,
struct sk_buff *skb,
int clone);
extern void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb);
extern void br_flood_forward(struct net_bridge *br, struct sk_buff *skb);
/* br_if.c */
extern void br_port_carrier_check(struct net_bridge_port *p);