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authorVinicius Costa Gomes <vinicius.gomes@intel.com>2018-04-10 10:49:54 -0700
committerJeff Kirsher <jeffrey.t.kirsher@intel.com>2018-04-25 10:37:08 -0700
commit0a8238998345549011c2a0da43cd6a35ea7bbebe (patch)
tree069d14c6de1f2457d09a50c869b4ea64f328d059 /drivers/net/ethernet/intel/igb
parentigb: Add support for MAC address filters specifying source addresses (diff)
downloadlinux-dev-0a8238998345549011c2a0da43cd6a35ea7bbebe.tar.xz
linux-dev-0a8238998345549011c2a0da43cd6a35ea7bbebe.zip
igb: Add support for enabling queue steering in filters
On some igb models (82575 and i210) the MAC address filters can control to which queue the packet will be assigned. This extends the 'state' with one more state to signify that queue selection should be enabled for that filter. As 82575 parts are no longer easily obtained (and this was developed against i210), only support for the i210 model is enabled. These functions are exported and will be used in the next patch. Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/ethernet/intel/igb')
-rw-r--r--drivers/net/ethernet/intel/igb/e1000_defines.h1
-rw-r--r--drivers/net/ethernet/intel/igb/igb.h6
-rw-r--r--drivers/net/ethernet/intel/igb/igb_main.c26
3 files changed, 33 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/igb/e1000_defines.h b/drivers/net/ethernet/intel/igb/e1000_defines.h
index 5417edbe3125..d3d1d868e7ba 100644
--- a/drivers/net/ethernet/intel/igb/e1000_defines.h
+++ b/drivers/net/ethernet/intel/igb/e1000_defines.h
@@ -492,6 +492,7 @@
*/
#define E1000_RAH_AV 0x80000000 /* Receive descriptor valid */
#define E1000_RAH_ASEL_SRC_ADDR 0x00010000
+#define E1000_RAH_QSEL_ENABLE 0x10000000
#define E1000_RAL_MAC_ADDR_LEN 4
#define E1000_RAH_MAC_ADDR_LEN 2
#define E1000_RAH_POOL_MASK 0x03FC0000
diff --git a/drivers/net/ethernet/intel/igb/igb.h b/drivers/net/ethernet/intel/igb/igb.h
index 1ff58f7a5c7d..c71845a450f7 100644
--- a/drivers/net/ethernet/intel/igb/igb.h
+++ b/drivers/net/ethernet/intel/igb/igb.h
@@ -475,6 +475,7 @@ struct igb_mac_addr {
#define IGB_MAC_STATE_DEFAULT 0x1
#define IGB_MAC_STATE_IN_USE 0x2
#define IGB_MAC_STATE_SRC_ADDR 0x4
+#define IGB_MAC_STATE_QUEUE_STEERING 0x8
/* board specific private data structure */
struct igb_adapter {
@@ -740,4 +741,9 @@ int igb_add_filter(struct igb_adapter *adapter,
int igb_erase_filter(struct igb_adapter *adapter,
struct igb_nfc_filter *input);
+int igb_add_mac_steering_filter(struct igb_adapter *adapter,
+ const u8 *addr, u8 queue, u8 flags);
+int igb_del_mac_steering_filter(struct igb_adapter *adapter,
+ const u8 *addr, u8 queue, u8 flags);
+
#endif /* _IGB_H_ */
diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c
index 902db2096bfd..21e76d649068 100644
--- a/drivers/net/ethernet/intel/igb/igb_main.c
+++ b/drivers/net/ethernet/intel/igb/igb_main.c
@@ -6950,6 +6950,28 @@ static int igb_del_mac_filter(struct igb_adapter *adapter, const u8 *addr,
return igb_del_mac_filter_flags(adapter, addr, queue, 0);
}
+int igb_add_mac_steering_filter(struct igb_adapter *adapter,
+ const u8 *addr, u8 queue, u8 flags)
+{
+ struct e1000_hw *hw = &adapter->hw;
+
+ /* In theory, this should be supported on 82575 as well, but
+ * that part wasn't easily accessible during development.
+ */
+ if (hw->mac.type != e1000_i210)
+ return -EOPNOTSUPP;
+
+ return igb_add_mac_filter_flags(adapter, addr, queue,
+ IGB_MAC_STATE_QUEUE_STEERING | flags);
+}
+
+int igb_del_mac_steering_filter(struct igb_adapter *adapter,
+ const u8 *addr, u8 queue, u8 flags)
+{
+ return igb_del_mac_filter_flags(adapter, addr, queue,
+ IGB_MAC_STATE_QUEUE_STEERING | flags);
+}
+
static int igb_uc_sync(struct net_device *netdev, const unsigned char *addr)
{
struct igb_adapter *adapter = netdev_priv(netdev);
@@ -8799,6 +8821,10 @@ static void igb_rar_set_index(struct igb_adapter *adapter, u32 index)
switch (hw->mac.type) {
case e1000_82575:
case e1000_i210:
+ if (adapter->mac_table[index].state &
+ IGB_MAC_STATE_QUEUE_STEERING)
+ rar_high |= E1000_RAH_QSEL_ENABLE;
+
rar_high |= E1000_RAH_POOL_1 *
adapter->mac_table[index].queue;
break;