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authorJohn Fastabend <john.r.fastabend@intel.com>2012-09-18 04:01:12 +0400
committerJeff Kirsher <jeffrey.t.kirsher@intel.com>2012-10-30 09:31:49 +0400
commitb3343a2a2c95b3b7ed4f6596e860c4276ba46217 (patch)
tree62eb61890a46176e7176b94ffcdccecfc95dd261 /net/bridge/br_input.c
parenta30134053c3c4a14049037ee41b74ab3fe57cf9e (diff)
downloadlinux-b3343a2a2c95b3b7ed4f6596e860c4276ba46217.tar.xz
net, ixgbe: handle link local multicast addresses in SR-IOV mode
In SR-IOV mode the PF driver acts as the uplink port and is used to send control packets e.g. lldpad, stp, etc. eth0.1 eth0.2 eth0 VF VF PF | | | <-- stand-in for uplink | | | -------------------------- | Embedded Switch | -------------------------- | MAC <-- uplink But the embedded switch is setup to forward multicast addresses to all interfaces both VFs and PF and onto the physical link. This results in reserved MAC addresses used by control protocols to be forwarded over the switch onto the VF. In the LLDP case the PF sends an LLDPDU and it is currently being forwarded to all the VFs who then see the PF as a peer. This is incorrect. This patch adds the multicast addresses to the RAR table in the hardware to prevent this behavior. Signed-off-by: John Fastabend <john.r.fastabend@intel.com> Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com> Tested-by: Sibai Li <sibai.li@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'net/bridge/br_input.c')
-rw-r--r--net/bridge/br_input.c15
1 files changed, 0 insertions, 15 deletions
diff --git a/net/bridge/br_input.c b/net/bridge/br_input.c
index 76f15fda0212..d047978bf025 100644
--- a/net/bridge/br_input.c
+++ b/net/bridge/br_input.c
@@ -19,9 +19,6 @@
#include <linux/export.h>
#include "br_private.h"
-/* Bridge group multicast address 802.1d (pg 51). */
-const u8 br_group_address[ETH_ALEN] = { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x00 };
-
/* Hook for brouter */
br_should_route_hook_t __rcu *br_should_route_hook __read_mostly;
EXPORT_SYMBOL(br_should_route_hook);
@@ -127,18 +124,6 @@ static int br_handle_local_finish(struct sk_buff *skb)
return 0; /* process further */
}
-/* Does address match the link local multicast address.
- * 01:80:c2:00:00:0X
- */
-static inline int is_link_local(const unsigned char *dest)
-{
- __be16 *a = (__be16 *)dest;
- static const __be16 *b = (const __be16 *)br_group_address;
- static const __be16 m = cpu_to_be16(0xfff0);
-
- return ((a[0] ^ b[0]) | (a[1] ^ b[1]) | ((a[2] ^ b[2]) & m)) == 0;
-}
-
/*
* Return NULL if skb is handled
* note: already called with rcu_read_lock