5 files changed, 105 insertions, 10 deletions

diff --git a/drivers/net/sfc/efx.c b/drivers/net/sfc/efx.c
index 2a90bf9..35b3f29 100644
--- a/drivers/net/sfc/efx.c
+++ b/drivers/net/sfc/efx.c
@@ -1121,6 +1121,7 @@ static void efx_set_channels(struct efx_nic *efx)
 
 static int efx_probe_nic(struct efx_nic *efx)
 {
+	size_t i;
 	int rc;
 
 	netif_dbg(efx, probe, efx->net_dev, "creating NIC\n");
@@ -1136,6 +1137,8 @@ static int efx_probe_nic(struct efx_nic *efx)
 
 	if (efx->n_channels > 1)
 		get_random_bytes(&efx->rx_hash_key, sizeof(efx->rx_hash_key));
+	for (i = 0; i < ARRAY_SIZE(efx->rx_indir_table); i++)
+		efx->rx_indir_table[i] = i % efx->n_rx_channels;
 
 	efx_set_channels(efx);
 	efx->net_dev->real_num_tx_queues = efx->n_tx_channels;
diff --git a/drivers/net/sfc/ethtool.c b/drivers/net/sfc/ethtool.c
index 23372bf..3b8b0a0 100644
--- a/drivers/net/sfc/ethtool.c
+++ b/drivers/net/sfc/ethtool.c
@@ -868,6 +868,93 @@ extern int efx_ethtool_reset(struct net_device *net_dev, u32 *flags)
 	return efx_reset(efx, method);
 }
 
+static int
+efx_ethtool_get_rxnfc(struct net_device *net_dev,
+		      struct ethtool_rxnfc *info, void *rules __always_unused)
+{
+	struct efx_nic *efx = netdev_priv(net_dev);
+
+	switch (info->cmd) {
+	case ETHTOOL_GRXRINGS:
+		info->data = efx->n_rx_channels;
+		return 0;
+
+	case ETHTOOL_GRXFH: {
+		unsigned min_revision = 0;
+
+		info->data = 0;
+		switch (info->flow_type) {
+		case TCP_V4_FLOW:
+			info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
+			/* fall through */
+		case UDP_V4_FLOW:
+		case SCTP_V4_FLOW:
+		case AH_ESP_V4_FLOW:
+		case IPV4_FLOW:
+			info->data |= RXH_IP_SRC | RXH_IP_DST;
+			min_revision = EFX_REV_FALCON_B0;
+			break;
+		case TCP_V6_FLOW:
+			info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
+			/* fall through */
+		case UDP_V6_FLOW:
+		case SCTP_V6_FLOW:
+		case AH_ESP_V6_FLOW:
+		case IPV6_FLOW:
+			info->data |= RXH_IP_SRC | RXH_IP_DST;
+			min_revision = EFX_REV_SIENA_A0;
+			break;
+		default:
+			break;
+		}
+		if (efx_nic_rev(efx) < min_revision)
+			info->data = 0;
+		return 0;
+	}
+
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+
+static int efx_ethtool_get_rxfh_indir(struct net_device *net_dev,
+				      struct ethtool_rxfh_indir *indir)
+{
+	struct efx_nic *efx = netdev_priv(net_dev);
+	size_t copy_size =
+		min_t(size_t, indir->size, ARRAY_SIZE(efx->rx_indir_table));
+
+	if (efx_nic_rev(efx) < EFX_REV_FALCON_B0)
+		return -EOPNOTSUPP;
+
+	indir->size = ARRAY_SIZE(efx->rx_indir_table);
+	memcpy(indir->ring_index, efx->rx_indir_table,
+	       copy_size * sizeof(indir->ring_index[0]));
+	return 0;
+}
+
+static int efx_ethtool_set_rxfh_indir(struct net_device *net_dev,
+				      const struct ethtool_rxfh_indir *indir)
+{
+	struct efx_nic *efx = netdev_priv(net_dev);
+	size_t i;
+
+	if (efx_nic_rev(efx) < EFX_REV_FALCON_B0)
+		return -EOPNOTSUPP;
+
+	/* Validate size and indices */
+	if (indir->size != ARRAY_SIZE(efx->rx_indir_table))
+		return -EINVAL;
+	for (i = 0; i < ARRAY_SIZE(efx->rx_indir_table); i++)
+		if (indir->ring_index[i] >= efx->n_rx_channels)
+			return -EINVAL;
+
+	memcpy(efx->rx_indir_table, indir->ring_index,
+	       sizeof(efx->rx_indir_table));
+	efx_nic_push_rx_indir_table(efx);
+	return 0;
+}
+
 const struct ethtool_ops efx_ethtool_ops = {
 	.get_settings		= efx_ethtool_get_settings,
 	.set_settings		= efx_ethtool_set_settings,
@@ -905,4 +992,7 @@ const struct ethtool_ops efx_ethtool_ops = {
 	.get_wol                = efx_ethtool_get_wol,
 	.set_wol                = efx_ethtool_set_wol,
 	.reset			= efx_ethtool_reset,
+	.get_rxnfc		= efx_ethtool_get_rxnfc,
+	.get_rxfh_indir		= efx_ethtool_get_rxfh_indir,
+	.set_rxfh_indir		= efx_ethtool_set_rxfh_indir,
 };
diff --git a/drivers/net/sfc/net_driver.h b/drivers/net/sfc/net_driver.h
index 28f3ff4..bab836c 100644
--- a/drivers/net/sfc/net_driver.h
+++ b/drivers/net/sfc/net_driver.h
@@ -648,6 +648,7 @@ union efx_multicast_hash {
  * @n_tx_channels: Number of channels used for TX
  * @rx_buffer_len: RX buffer length
  * @rx_buffer_order: Order (log2) of number of pages for each RX buffer
+ * @rx_indir_table: Indirection table for RSS
  * @int_error_count: Number of internal errors seen recently
  * @int_error_expire: Time at which error count will be expired
  * @irq_status: Interrupt status buffer
@@ -736,6 +737,7 @@ struct efx_nic {
 	unsigned int rx_buffer_len;
 	unsigned int rx_buffer_order;
 	u8 rx_hash_key[40];
+	u32 rx_indir_table[128];
 
 	unsigned int_error_count;
 	unsigned long int_error_expire;
diff --git a/drivers/net/sfc/nic.c b/drivers/net/sfc/nic.c
index 3083657..f595d92 100644
--- a/drivers/net/sfc/nic.c
+++ b/drivers/net/sfc/nic.c
@@ -1484,22 +1484,21 @@ static irqreturn_t efx_msi_interrupt(int irq, void *dev_id)
 /* Setup RSS indirection table.
  * This maps from the hash value of the packet to RXQ
  */
-static void efx_setup_rss_indir_table(struct efx_nic *efx)
+void efx_nic_push_rx_indir_table(struct efx_nic *efx)
 {
-	int i = 0;
-	unsigned long offset;
+	size_t i = 0;
 	efx_dword_t dword;
 
 	if (efx_nic_rev(efx) < EFX_REV_FALCON_B0)
 		return;
 
-	for (offset = FR_BZ_RX_INDIRECTION_TBL;
-	     offset < FR_BZ_RX_INDIRECTION_TBL + 0x800;
-	     offset += 0x10) {
+	BUILD_BUG_ON(ARRAY_SIZE(efx->rx_indir_table) !=
+		     FR_BZ_RX_INDIRECTION_TBL_ROWS);
+
+	for (i = 0; i < FR_BZ_RX_INDIRECTION_TBL_ROWS; i++) {
 		EFX_POPULATE_DWORD_1(dword, FRF_BZ_IT_QUEUE,
-				     i % efx->n_rx_channels);
-		efx_writed(efx, &dword, offset);
-		i++;
+				     efx->rx_indir_table[i]);
+		efx_writed_table(efx, &dword, FR_BZ_RX_INDIRECTION_TBL, i);
 	}
 }
 
@@ -1634,7 +1633,7 @@ void efx_nic_init_common(struct efx_nic *efx)
 	EFX_INVERT_OWORD(temp);
 	efx_writeo(efx, &temp, FR_AZ_FATAL_INTR_KER);
 
-	efx_setup_rss_indir_table(efx);
+	efx_nic_push_rx_indir_table(efx);
 
 	/* Disable the ugly timer-based TX DMA backoff and allow TX DMA to be
 	 * controlled by the RX FIFO fill level. Set arbitration to one pkt/Q.
diff --git a/drivers/net/sfc/nic.h b/drivers/net/sfc/nic.h
index a39822d..0438dc9 100644
--- a/drivers/net/sfc/nic.h
+++ b/drivers/net/sfc/nic.h
@@ -207,6 +207,7 @@ extern void falcon_stop_nic_stats(struct efx_nic *efx);
 extern void falcon_setup_xaui(struct efx_nic *efx);
 extern int falcon_reset_xaui(struct efx_nic *efx);
 extern void efx_nic_init_common(struct efx_nic *efx);
+extern void efx_nic_push_rx_indir_table(struct efx_nic *efx);
 
 int efx_nic_alloc_buffer(struct efx_nic *efx, struct efx_buffer *buffer,
 			 unsigned int len);