From b3343a2a2c95b3b7ed4f6596e860c4276ba46217 Mon Sep 17 00:00:00 2001 From: John Fastabend Date: Tue, 18 Sep 2012 00:01:12 +0000 Subject: 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 Tested-by: Phil Schmitt Tested-by: Sibai Li Signed-off-by: Jeff Kirsher --- net/bridge/br_sysfs_br.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'net/bridge/br_sysfs_br.c') diff --git a/net/bridge/br_sysfs_br.c b/net/bridge/br_sysfs_br.c index c5c059333eab..e157b0dbcd82 100644 --- a/net/bridge/br_sysfs_br.c +++ b/net/bridge/br_sysfs_br.c @@ -14,6 +14,7 @@ #include #include #include +#include #include #include #include @@ -310,7 +311,7 @@ static ssize_t store_group_addr(struct device *d, /* Must be 01:80:c2:00:00:0X */ for (i = 0; i < 5; i++) - if (new_addr[i] != br_group_address[i]) + if (new_addr[i] != br_reserved_address[i]) return -EINVAL; if (new_addr[5] & ~0xf) -- cgit v1.2.1