ich777/linux_media
1
0
Fork 0
mirror of https://github.com/tbsdtv/linux_media.git synced 2025-07-23 12:43:29 +02:00
Code Issues Packages Projects Releases Wiki Activity

macvlan: add multicast filter

Browse Source 
Setting up IPv6 addresses on configurations with many macvlans
is not really working, as many multicast messages are dropped.

Add a multicast filter to macvlan to reduce the amount of cloned
skbs and overhead.

Successfully tested with 1024 macvlans on one ethernet device.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Ben Greear <greearb@candelatech.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet
2013-02-05 20:22:50 +00:00
committed by David S. Miller
parent 6d1ccff627
commit cd431e7385
2 changed files with 29 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
include/linux/if_macvlan.h
View File

@@ -52,6 +52,9 @@ struct macvlan_pcpu_stats {
*/
#define MAX_MACVTAP_QUEUES (NR_CPUS < 16 ? NR_CPUS : 16)
#define MACVLAN_MC_FILTER_BITS 8
#define MACVLAN_MC_FILTER_SZ (1 << MACVLAN_MC_FILTER_BITS)
struct macvlan_dev {
struct net_device *dev;
struct list_head list;
@@ -59,6 +62,9 @@ struct macvlan_dev {
struct macvlan_port *port;
struct net_device *lowerdev;
struct macvlan_pcpu_stats __percpu *pcpu_stats;
DECLARE_BITMAP(mc_filter, MACVLAN_MC_FILTER_SZ);
enum macvlan_mode mode;
u16 flags;
int (*receive)(struct sk_buff *skb);