From dc1edc67fe2da3d87b56cdffd5ef55c3a9af252c Mon Sep 17 00:00:00 2001 From: Stefan Assmann Date: Wed, 11 Dec 2013 22:10:12 +0000 Subject: [PATCH] igb: enable VLAN stripping for VMs with i350 For i350 VLAN stripping for VMs is not enabled in the VMOLR register but in the DVMOLR register. Making the changes accordingly. It's not necessary to unset the E1000_VMOLR_STRVLAN bit on i350 as the hardware will simply ignore it. Without this change if a VLAN is configured for a VF assigned to a guest via (i.e.) ip link set p1p1 vf 0 vlan 10 the VLAN tag will not be stripped from packets going into the VM. Which they should be because the VM itself is not aware of the VLAN at all. Signed-off-by: Stefan Assmann Tested-by: Sibai Li Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/igb/e1000_82575.h | 4 ++++ drivers/net/ethernet/intel/igb/e1000_regs.h | 1 + drivers/net/ethernet/intel/igb/igb_main.c | 7 +++++++ 3 files changed, 12 insertions(+) diff --git a/drivers/net/ethernet/intel/igb/e1000_82575.h b/drivers/net/ethernet/intel/igb/e1000_82575.h index 2a721a15afc1..09d78be72416 100644 --- a/drivers/net/ethernet/intel/igb/e1000_82575.h +++ b/drivers/net/ethernet/intel/igb/e1000_82575.h @@ -230,6 +230,10 @@ struct e1000_adv_tx_context_desc { #define E1000_VMOLR_STRVLAN 0x40000000 /* Vlan stripping enable */ #define E1000_VMOLR_STRCRC 0x80000000 /* CRC stripping enable */ +#define E1000_DVMOLR_HIDEVLAN 0x20000000 /* Hide vlan enable */ +#define E1000_DVMOLR_STRVLAN 0x40000000 /* Vlan stripping enable */ +#define E1000_DVMOLR_STRCRC 0x80000000 /* CRC stripping enable */ + #define E1000_VLVF_ARRAY_SIZE 32 #define E1000_VLVF_VLANID_MASK 0x00000FFF #define E1000_VLVF_POOLSEL_SHIFT 12 diff --git a/drivers/net/ethernet/intel/igb/e1000_regs.h b/drivers/net/ethernet/intel/igb/e1000_regs.h index e9c5fdd60f54..d0f14be3d94f 100644 --- a/drivers/net/ethernet/intel/igb/e1000_regs.h +++ b/drivers/net/ethernet/intel/igb/e1000_regs.h @@ -357,6 +357,7 @@ #define E1000_P2VMAILBOX(_n) (0x00C00 + (4 * (_n))) #define E1000_VMBMEM(_n) (0x00800 + (64 * (_n))) #define E1000_VMOLR(_n) (0x05AD0 + (4 * (_n))) +#define E1000_DVMOLR(_n) (0x0C038 + (64 * (_n))) #define E1000_VLVF(_n) (0x05D00 + (4 * (_n))) /* VLAN Virtual Machine * Filter - RW */ #define E1000_VMVIR(_n) (0x03700 + (4 * (_n))) diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c index ac06492fb816..313e1a87ea9f 100644 --- a/drivers/net/ethernet/intel/igb/igb_main.c +++ b/drivers/net/ethernet/intel/igb/igb_main.c @@ -3542,6 +3542,13 @@ static inline void igb_set_vmolr(struct igb_adapter *adapter, vmolr = rd32(E1000_VMOLR(vfn)); vmolr |= E1000_VMOLR_STRVLAN; /* Strip vlan tags */ + if (hw->mac.type == e1000_i350) { + u32 dvmolr; + + dvmolr = rd32(E1000_DVMOLR(vfn)); + dvmolr |= E1000_DVMOLR_STRVLAN; + wr32(E1000_DVMOLR(vfn), dvmolr); + } if (aupe) vmolr |= E1000_VMOLR_AUPE; /* Accept untagged packets */ else -- 2.20.1