sky2: add support for receive hashing

Sky2 hardware supports hardware receive hash calculation.
Now that Receive Packet Steering is available, add support
to enable it.

This version does not depend on CONFIG_RPS. Also set_flags rejects
all values except RXHASH, so driver won't have to change next time
somebody adds a new one.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 14 insertions, 0 deletions

diff --git a/drivers/net/sky2.h b/drivers/net/sky2.h
index 125b5bd01524..545a3f41ef56 100644
--- a/drivers/net/sky2.h
+++ b/drivers/net/sky2.h
@@ -694,8 +694,21 @@ enum {
         TXA_CTRL        = 0x0210,/*  8 bit      Tx Arbiter Control Register */
         TXA_TEST        = 0x0211,/*  8 bit      Tx Arbiter Test Register */
         TXA_STAT        = 0x0212,/*  8 bit      Tx Arbiter Status Register */
+
+        RSS_KEY         = 0x0220, /* RSS Key setup */
+        RSS_CFG         = 0x0248, /* RSS Configuration */
 };
 
+enum {
+        HASH_TCP_IPV6_EX_CTRL   = 1<<5,
+        HASH_IPV6_EX_CTRL       = 1<<4,
+        HASH_TCP_IPV6_CTRL      = 1<<3,
+        HASH_IPV6_CTRL          = 1<<2,
+        HASH_TCP_IPV4_CTRL      = 1<<1,
+        HASH_IPV4_CTRL          = 1<<0,
+
+        HASH_ALL                = 0x3f,
+};
 
 enum {
         B6_EXT_REG      = 0x0300,/* External registers (GENESIS only) */
@@ -2261,6 +2274,7 @@ struct sky2_hw {
 #define SKY2_HW_NEW_LE          0x00000020      /* new LSOv2 format */
 #define SKY2_HW_AUTO_TX_SUM     0x00000040      /* new IP decode for Tx */
 #define SKY2_HW_ADV_POWER_CTL   0x00000080      /* additional PHY power regs */
+#define SKY2_HW_RSS_BROKEN      0x00000100
 
         u8                   chip_id;
         u8                   chip_rev;