amd-xgbe: Add receive side scaling ethtool support
This patch adds support for ethtool receive side scaling (RSS) commands.
Support is added to get/set the RSS hash key and the RSS lookup table.
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-dev.c b/drivers/net/ethernet/amd/xgbe/xgbe-dev.c
index 551794c..7daa2cd 100644
--- a/drivers/net/ethernet/amd/xgbe/xgbe-dev.c
+++ b/drivers/net/ethernet/amd/xgbe/xgbe-dev.c
@@ -419,6 +419,24 @@
return 0;
}
+static int xgbe_set_rss_hash_key(struct xgbe_prv_data *pdata, const u8 *key)
+{
+ memcpy(pdata->rss_key, key, sizeof(pdata->rss_key));
+
+ return xgbe_write_rss_hash_key(pdata);
+}
+
+static int xgbe_set_rss_lookup_table(struct xgbe_prv_data *pdata,
+ const u32 *table)
+{
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(pdata->rss_table); i++)
+ XGMAC_SET_BITS(pdata->rss_table[i], MAC_RSSDR, DMCH, table[i]);
+
+ return xgbe_write_rss_lookup_table(pdata);
+}
+
static int xgbe_enable_rss(struct xgbe_prv_data *pdata)
{
int ret;
@@ -2759,6 +2777,8 @@
/* For Receive Side Scaling */
hw_if->enable_rss = xgbe_enable_rss;
hw_if->disable_rss = xgbe_disable_rss;
+ hw_if->set_rss_hash_key = xgbe_set_rss_hash_key;
+ hw_if->set_rss_lookup_table = xgbe_set_rss_lookup_table;
DBGPR("<--xgbe_init_function_ptrs\n");
}