Makes it possible to direct packets to queues based on their source
address. Documents the expected usage of the 'flags' parameter.
Signed-off-by: Vinicius Costa Gomes <vinicius.go...@intel.com>
---
drivers/net/ethernet/intel/igb/e1000_defines.h | 1 +
drivers/net/ethernet/intel/igb/igb.h | 1 +
drivers/net/ethernet/intel/igb/igb_main.c | 38 ++++++++++++++++++++++----
3 files changed, 35 insertions(+), 5 deletions(-)
diff --git a/drivers/net/ethernet/intel/igb/e1000_defines.h
b/drivers/net/ethernet/intel/igb/e1000_defines.h
index 573bf177fd08..c6f552de30dd 100644
--- a/drivers/net/ethernet/intel/igb/e1000_defines.h
+++ b/drivers/net/ethernet/intel/igb/e1000_defines.h
@@ -490,6 +490,7 @@
* manageability enabled, allowing us room for 15 multicast addresses.
*/
#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
diff --git a/drivers/net/ethernet/intel/igb/igb.h
b/drivers/net/ethernet/intel/igb/igb.h
index 1c6b8d9176a8..d5cd5f6708d9 100644
--- a/drivers/net/ethernet/intel/igb/igb.h
+++ b/drivers/net/ethernet/intel/igb/igb.h
@@ -472,6 +472,7 @@ struct igb_mac_addr {
#define IGB_MAC_STATE_DEFAULT 0x1
#define IGB_MAC_STATE_IN_USE 0x2
+#define IGB_MAC_STATE_SRC_ADDR 0x4
/* board specific private data structure */
struct igb_adapter {
diff --git a/drivers/net/ethernet/intel/igb/igb_main.c
b/drivers/net/ethernet/intel/igb/igb_main.c
index 3c4d209aad76..1df1c5a99a0d 100644
--- a/drivers/net/ethernet/intel/igb/igb_main.c
+++ b/drivers/net/ethernet/intel/igb/igb_main.c
@@ -6838,8 +6838,13 @@ static void igb_set_default_mac_filter(struct
igb_adapter *adapter)
igb_rar_set_index(adapter, 0);
}
-static int igb_add_mac_filter(struct igb_adapter *adapter, const u8 *addr,
- const u8 queue)
+/* Add a MAC filter for 'addr' directing matching traffic to 'queue',
+ * 'flags' is used to indicate what kind of match is made, match is by
+ * default for the destination address, if matching by source address
+ * is desired the flag IGB_MAC_STATE_SRC_ADDR can be used.
+ */
+static int igb_add_mac_filter_flags(struct igb_adapter *adapter, const u8
*addr,
+ const u8 queue, const u8 flags)
{
struct e1000_hw *hw = &adapter->hw;
int rar_entries = hw->mac.rar_entry_count -
@@ -6859,7 +6864,7 @@ static int igb_add_mac_filter(struct igb_adapter
*adapter, const u8 *addr,
ether_addr_copy(adapter->mac_table[i].addr, addr);
adapter->mac_table[i].queue = queue;
- adapter->mac_table[i].state |= IGB_MAC_STATE_IN_USE;
+ adapter->mac_table[i].state |= IGB_MAC_STATE_IN_USE | flags;
igb_rar_set_index(adapter, i);
return i;
@@ -6868,8 +6873,20 @@ static int igb_add_mac_filter(struct igb_adapter
*adapter, const u8 *addr,
return -ENOSPC;
}
-static int igb_del_mac_filter(struct igb_adapter *adapter, const u8 *addr,
+static int igb_add_mac_filter(struct igb_adapter *adapter, const u8 *addr,
const u8 queue)
+{
+ return igb_add_mac_filter_flags(adapter, addr, queue, 0);
+}
+
+/* Remove a MAC filter for 'addr' directing matching traffic to
+ * 'queue', 'flags' is used to indicate what kind of match need to be
+ * removed, match is by default for the destination address, if
+ * matching by source address is to be removed the flag
+ * IGB_MAC_STATE_SRC_ADDR can be used.
+ */
+static int igb_del_mac_filter_flags(struct igb_adapter *adapter, const u8
*addr,
+ const u8 queue, const u8 flags)
{
struct e1000_hw *hw = &adapter->hw;
int rar_entries = hw->mac.rar_entry_count -
@@ -6886,12 +6903,14 @@ static int igb_del_mac_filter(struct igb_adapter
*adapter, const u8 *addr,
for (i = 0; i < rar_entries; i++) {
if (!(adapter->mac_table[i].state & IGB_MAC_STATE_IN_USE))
continue;
+ if ((adapter->mac_table[i].state & flags) != flags)
+ continue;
if (adapter->mac_table[i].queue != queue)
continue;
if (!ether_addr_equal(adapter->mac_table[i].addr, addr))
continue;
- adapter->mac_table[i].state &= ~IGB_MAC_STATE_IN_USE;
+ adapter->mac_table[i].state = 0;
memset(adapter->mac_table[i].addr, 0, ETH_ALEN);
adapter->mac_table[i].queue = 0;
@@ -6902,6 +6921,12 @@ static int igb_del_mac_filter(struct igb_adapter
*adapter, const u8 *addr,
return -ENOENT;
}
+static int igb_del_mac_filter(struct igb_adapter *adapter, const u8 *addr,
+ const u8 queue)
+{
+ return igb_del_mac_filter_flags(adapter, addr, queue, 0);
+}
+
static int igb_uc_sync(struct net_device *netdev, const unsigned char *addr)
{
struct igb_adapter *adapter = netdev_priv(netdev);
@@ -8744,6 +8769,9 @@ static void igb_rar_set_index(struct igb_adapter
*adapter, u32 index)
if (is_valid_ether_addr(addr))
rar_high |= E1000_RAH_AV;
+ if (adapter->mac_table[index].state & IGB_MAC_STATE_SRC_ADDR)
+ rar_high |= E1000_RAH_ASEL_SRC_ADDR;
+
switch (hw->mac.type) {
case e1000_82575:
case e1000_i210:
--
2.16.2
