redonkable/alistair23-linux
redonkable/alistair23-linux
1
0
Fork 0
Code Releases Activity

ixgbe: Add anti-spoofing feature support

Browse source 
Add support for the anti-spoofing feature in the HW.  Packets from
VF devices with spoofed MAC addresses or VLAN tags will be blocked
and a counter incremented.  During the watchdog timer the spoofed
packet dropped counter is read and if it is non-zero then a warning
message is displayed on the host VMM's console.

Signed-off-by: Greg Rose <gregory.v.rose@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Greg Rose 2010-11-18 03:02:52 +00:00 committed by Jeff Kirsher
parent 3377eba79e
commit a985b6c31f
6 changed files with 114 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
drivers/net/ixgbe/ixgbe_82599.c
View file

@ -2165,6 +2165,8 @@ static struct ixgbe_mac_operations mac_ops_82599 = {
.fc_enable = &ixgbe_fc_enable_generic,
.init_uta_tables = &ixgbe_init_uta_tables_generic,
.setup_sfp = &ixgbe_setup_sfp_modules_82599,
.set_mac_anti_spoofing = &ixgbe_set_mac_anti_spoofing,
.set_vlan_anti_spoofing = &ixgbe_set_vlan_anti_spoofing,
};
static struct ixgbe_eeprom_operations eeprom_ops_82599 = {

64
drivers/net/ixgbe/ixgbe_common.c
View file

@ -2809,3 +2809,67 @@ s32 ixgbe_get_wwn_prefix_generic(struct ixgbe_hw *hw, u16 *wwnn_prefix,
wwn_prefix_out:
return 0;
}
/**
* ixgbe_set_mac_anti_spoofing - Enable/Disable MAC anti-spoofing
* @hw: pointer to hardware structure
* @enable: enable or disable switch for anti-spoofing
* @pf: Physical Function pool - do not enable anti-spoofing for the PF
*
**/
void ixgbe_set_mac_anti_spoofing(struct ixgbe_hw *hw, bool enable, int pf)
{
int j;
int pf_target_reg = pf >> 3;
int pf_target_shift = pf % 8;
u32 pfvfspoof = 0;
if (hw->mac.type == ixgbe_mac_82598EB)
return;
if (enable)
pfvfspoof = IXGBE_SPOOF_MACAS_MASK;
/*
* PFVFSPOOF register array is size 8 with 8 bits assigned to
* MAC anti-spoof enables in each register array element.
*/
for (j = 0; j < IXGBE_PFVFSPOOF_REG_COUNT; j++)
IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(j), pfvfspoof);
/* If not enabling anti-spoofing then done */
if (!enable)
return;
/*
* The PF should be allowed to spoof so that it can support
* emulation mode NICs. Reset the bit assigned to the PF
*/
pfvfspoof = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(pf_target_reg));
pfvfspoof ^= (1 << pf_target_shift);
IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(pf_target_reg), pfvfspoof);
}
/**
* ixgbe_set_vlan_anti_spoofing - Enable/Disable VLAN anti-spoofing
* @hw: pointer to hardware structure
* @enable: enable or disable switch for VLAN anti-spoofing
* @pf: Virtual Function pool - VF Pool to set for VLAN anti-spoofing
*
**/
void ixgbe_set_vlan_anti_spoofing(struct ixgbe_hw *hw, bool enable, int vf)
{
int vf_target_reg = vf >> 3;
int vf_target_shift = vf % 8 + IXGBE_SPOOF_VLANAS_SHIFT;
u32 pfvfspoof;
if (hw->mac.type == ixgbe_mac_82598EB)
return;
pfvfspoof = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg));
if (enable)
pfvfspoof |= (1 << vf_target_shift);
else
pfvfspoof &= ~(1 << vf_target_shift);
IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg), pfvfspoof);
}

2
drivers/net/ixgbe/ixgbe_common.h
View file

@ -88,6 +88,8 @@ s32 ixgbe_get_wwn_prefix_generic(struct ixgbe_hw *hw, u16 *wwnn_prefix,
u16 *wwpn_prefix);
s32 ixgbe_blink_led_start_generic(struct ixgbe_hw *hw, u32 index);
s32 ixgbe_blink_led_stop_generic(struct ixgbe_hw *hw, u32 index);
void ixgbe_set_mac_anti_spoofing(struct ixgbe_hw *hw, bool enable, int pf);
void ixgbe_set_vlan_anti_spoofing(struct ixgbe_hw *hw, bool enable, int vf);
#define IXGBE_WRITE_REG(a, reg, value) writel((value), ((a)->hw_addr + (reg)))

24
drivers/net/ixgbe/ixgbe_main.c
View file

@ -3132,6 +3132,9 @@ static void ixgbe_configure_virtualization(struct ixgbe_adapter *adapter)
/* enable Tx loopback for VF/PF communication */
IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, IXGBE_PFDTXGSWC_VT_LBEN);
/* Enable MAC Anti-Spoofing */
hw->mac.ops.set_mac_anti_spoofing(hw, (adapter->num_vfs != 0),
adapter->num_vfs);
}
static void ixgbe_set_rx_buffer_len(struct ixgbe_adapter *adapter)
@ -5960,6 +5963,26 @@ static void ixgbe_fdir_reinit_task(struct work_struct *work)
netif_tx_start_all_queues(adapter->netdev);
}
static void ixgbe_spoof_check(struct ixgbe_adapter *adapter)
{
u32 ssvpc;
/* Do not perform spoof check for 82598 */
if (adapter->hw.mac.type == ixgbe_mac_82598EB)
return;
ssvpc = IXGBE_READ_REG(&adapter->hw, IXGBE_SSVPC);
/*
* ssvpc register is cleared on read, if zero then no
* spoofed packets in the last interval.
*/
if (!ssvpc)
return;
e_warn(drv, "%d Spoofed packets detected\n", ssvpc);
}
static DEFINE_MUTEX(ixgbe_watchdog_lock);
/**
@ -6080,6 +6103,7 @@ static void ixgbe_watchdog_task(struct work_struct *work)
}
}
ixgbe_spoof_check(adapter);
ixgbe_update_stats(adapter);
mutex_unlock(&ixgbe_watchdog_lock);
}

12
drivers/net/ixgbe/ixgbe_sriov.c
View file

@ -215,6 +215,11 @@ static inline void ixgbe_vf_reset_msg(struct ixgbe_adapter *adapter, u32 vf)
reg |= (reg | (1 << vf_shift));
IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), reg);
/* Enable counting of spoofed packets in the SSVPC register */
reg = IXGBE_READ_REG(hw, IXGBE_VMECM(reg_offset));
reg |= (1 << vf_shift);
IXGBE_WRITE_REG(hw, IXGBE_VMECM(reg_offset), reg);
ixgbe_vf_reset_event(adapter, vf);
}
@ -412,6 +417,7 @@ int ixgbe_ndo_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan, u8 qos)
{
int err = 0;
struct ixgbe_adapter *adapter = netdev_priv(netdev);
struct ixgbe_hw *hw = &adapter->hw;
if ((vf >= adapter->num_vfs) || (vlan > 4095) || (qos > 7))
return -EINVAL;
@ -420,7 +426,8 @@ int ixgbe_ndo_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan, u8 qos)
if (err)
goto out;
ixgbe_set_vmvir(adapter, vlan | (qos << VLAN_PRIO_SHIFT), vf);
ixgbe_set_vmolr(&adapter->hw, vf, false);
ixgbe_set_vmolr(hw, vf, false);
hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf);
adapter->vfinfo[vf].pf_vlan = vlan;
adapter->vfinfo[vf].pf_qos = qos;
dev_info(&adapter->pdev->dev,
@ -437,7 +444,8 @@ int ixgbe_ndo_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan, u8 qos)
err = ixgbe_set_vf_vlan(adapter, false,
adapter->vfinfo[vf].pf_vlan, vf);
ixgbe_set_vmvir(adapter, vlan, vf);
ixgbe_set_vmolr(&adapter->hw, vf, true);
ixgbe_set_vmolr(hw, vf, true);
hw->mac.ops.set_vlan_anti_spoofing(hw, false, vf);
adapter->vfinfo[vf].pf_vlan = 0;
adapter->vfinfo[vf].pf_qos = 0;
}

13
drivers/net/ixgbe/ixgbe_type.h
View file

@ -230,6 +230,7 @@
#define IXGBE_VT_CTL 0x051B0
#define IXGBE_VFRE(_i) (0x051E0 + ((_i) * 4))
#define IXGBE_VFTE(_i) (0x08110 + ((_i) * 4))
#define IXGBE_VMECM(_i) (0x08790 + ((_i) * 4))
#define IXGBE_QDE 0x2F04
#define IXGBE_VMOLR(_i) (0x0F000 + ((_i) * 4)) /* 64 total */
#define IXGBE_UTA(_i) (0x0F400 + ((_i) * 4))
@ -284,7 +285,8 @@
#define IXGBE_TDWBAH(_i) (0x0603C + ((_i) * 0x40))
#define IXGBE_DTXCTL 0x07E00
#define IXGBE_DMATXCTL 0x04A80
#define IXGBE_DMATXCTL 0x04A80
#define IXGBE_PFVFSPOOF(_i) (0x08200 + ((_i) * 4)) /* 8 of these 0 - 7 */
#define IXGBE_PFDTXGSWC 0x08220
#define IXGBE_DTXMXSZRQ 0x08100
#define IXGBE_DTXTCPFLGL 0x04A88
@ -298,6 +300,13 @@
#define IXGBE_DMATXCTL_VT_SHIFT 16 /* VLAN EtherType */
#define IXGBE_PFDTXGSWC_VT_LBEN 0x1 /* Local L2 VT switch enable */
/* Anti-spoofing defines */
#define IXGBE_SPOOF_MACAS_MASK 0xFF
#define IXGBE_SPOOF_VLANAS_MASK 0xFF00
#define IXGBE_SPOOF_VLANAS_SHIFT 8
#define IXGBE_PFVFSPOOF_REG_COUNT 8
#define IXGBE_DCA_TXCTRL(_i) (0x07200 + ((_i) * 4)) /* 16 of these (0-15) */
/* Tx DCA Control register : 128 of these (0-127) */
#define IXGBE_DCA_TXCTRL_82599(_i) (0x0600C + ((_i) * 0x40))
@ -2482,6 +2491,8 @@ struct ixgbe_mac_operations {
s32 (*clear_vfta)(struct ixgbe_hw *);
s32 (*set_vfta)(struct ixgbe_hw *, u32, u32, bool);
s32 (*init_uta_tables)(struct ixgbe_hw *);
void (*set_mac_anti_spoofing)(struct ixgbe_hw *, bool, int);
void (*set_vlan_anti_spoofing)(struct ixgbe_hw *, bool, int);
/* Flow Control */
s32 (*fc_enable)(struct ixgbe_hw *, s32);