Merge branch 'qed-ethtool-rss'

Yuval Mintz says:

====================
qed*: [mostly] Ethtool RSS configuration

Most of the content [code-wise] in this series is for allowing various
RSS-related configuration via ethtool.

In addition, this also removed an unnecessary versioning scheme between
the drivers and bump the driver version.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

8 files changed, 302 insertions, 71 deletions

diff --git a/drivers/net/ethernet/qlogic/qed/qed.h b/drivers/net/ethernet/qlogic/qed/qed.h
index fcb8e9ba51d9..0f0d2d1d77e5 100644
--- a/drivers/net/ethernet/qlogic/qed/qed.h
+++ b/drivers/net/ethernet/qlogic/qed/qed.h
@@ -26,7 +26,7 @@
 #include "qed_hsi.h"
 
 extern const struct qed_common_ops qed_common_ops_pass;
-#define DRV_MODULE_VERSION "8.7.0.0"
+#define DRV_MODULE_VERSION "8.7.1.20"
 
 #define MAX_HWFNS_PER_DEVICE    (4)
 #define NAME_SIZE 16
@@ -507,6 +507,4 @@ u32 qed_unzip_data(struct qed_hwfn *p_hwfn,
 
 int qed_slowpath_irq_req(struct qed_hwfn *hwfn);
 
-#define QED_ETH_INTERFACE_VERSION       300
-
 #endif /* _QED_H */
diff --git a/drivers/net/ethernet/qlogic/qed/qed_l2.c b/drivers/net/ethernet/qlogic/qed/qed_l2.c
index 3f35c6ca9252..5005497ee23e 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_l2.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_l2.c
@@ -35,19 +35,6 @@
 #include "qed_reg_addr.h"
 #include "qed_sp.h"
 
-enum qed_rss_caps {
-	QED_RSS_IPV4		= 0x1,
-	QED_RSS_IPV6		= 0x2,
-	QED_RSS_IPV4_TCP	= 0x4,
-	QED_RSS_IPV6_TCP	= 0x8,
-	QED_RSS_IPV4_UDP	= 0x10,
-	QED_RSS_IPV6_UDP	= 0x20,
-};
-
-/* Should be the same as ETH_RSS_IND_TABLE_ENTRIES_NUM */
-#define QED_RSS_IND_TABLE_SIZE 128
-#define QED_RSS_KEY_SIZE 10 /* size in 32b chunks */
-
 struct qed_rss_params {
 	u8	update_rss_config;
 	u8	rss_enable;
@@ -1744,9 +1731,7 @@ static int qed_update_vport(struct qed_dev *cdev,
 		sp_rss_params.update_rss_capabilities = 1;
 		sp_rss_params.update_rss_ind_table = 1;
 		sp_rss_params.update_rss_key = 1;
-		sp_rss_params.rss_caps = QED_RSS_IPV4 |
-					 QED_RSS_IPV6 |
-					 QED_RSS_IPV4_TCP | QED_RSS_IPV6_TCP;
+		sp_rss_params.rss_caps = params->rss_params.rss_caps;
 		sp_rss_params.rss_table_size_log = 7; /* 2^7 = 128 */
 		memcpy(sp_rss_params.rss_ind_table,
 		       params->rss_params.rss_ind_table,
@@ -2043,14 +2028,8 @@ static const struct qed_eth_ops qed_eth_ops_pass = {
 	.get_vport_stats = &qed_get_vport_stats,
 };
 
-const struct qed_eth_ops *qed_get_eth_ops(u32 version)
+const struct qed_eth_ops *qed_get_eth_ops(void)
 {
-	if (version != QED_ETH_INTERFACE_VERSION) {
-		pr_notice("Cannot supply ethtool operations [%08x != %08x]\n",
-			  version, QED_ETH_INTERFACE_VERSION);
-		return NULL;
-	}
-
 	return &qed_eth_ops_pass;
 }
 EXPORT_SYMBOL(qed_get_eth_ops);
diff --git a/drivers/net/ethernet/qlogic/qed/qed_main.c b/drivers/net/ethernet/qlogic/qed/qed_main.c
index 26d40db07ddd..c31d485f72d6 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_main.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_main.c
@@ -1172,14 +1172,3 @@ const struct qed_common_ops qed_common_ops_pass = {
 	.chain_free = &qed_chain_free,
 	.set_led = &qed_set_led,
 };
-
-u32 qed_get_protocol_version(enum qed_protocol protocol)
-{
-	switch (protocol) {
-	case QED_PROTOCOL_ETH:
-		return QED_ETH_INTERFACE_VERSION;
-	default:
-		return 0;
-	}
-}
-EXPORT_SYMBOL(qed_get_protocol_version);
diff --git a/drivers/net/ethernet/qlogic/qede/qede.h b/drivers/net/ethernet/qlogic/qede/qede.h
index d023251544d9..41c418909a5c 100644
--- a/drivers/net/ethernet/qlogic/qede/qede.h
+++ b/drivers/net/ethernet/qlogic/qede/qede.h
@@ -25,15 +25,13 @@
 
 #define QEDE_MAJOR_VERSION		8
 #define QEDE_MINOR_VERSION		7
-#define QEDE_REVISION_VERSION		0
-#define QEDE_ENGINEERING_VERSION	0
+#define QEDE_REVISION_VERSION		1
+#define QEDE_ENGINEERING_VERSION	20
 #define DRV_MODULE_VERSION __stringify(QEDE_MAJOR_VERSION) "."	\
 		__stringify(QEDE_MINOR_VERSION) "."		\
 		__stringify(QEDE_REVISION_VERSION) "."		\
 		__stringify(QEDE_ENGINEERING_VERSION)
 
-#define QEDE_ETH_INTERFACE_VERSION	300
-
 #define DRV_MODULE_SYM		qede
 
 struct qede_stats {
@@ -156,6 +154,10 @@ struct qede_dev {
 	      SKB_DATA_ALIGN(sizeof(struct skb_shared_info)))
 
 	struct qede_stats		stats;
+#define QEDE_RSS_INDIR_INITED	BIT(0)
+#define QEDE_RSS_KEY_INITED	BIT(1)
+#define QEDE_RSS_CAPS_INITED	BIT(2)
+	u32 rss_params_inited; /* bit-field to track initialized rss params */
 	struct qed_update_vport_rss_params	rss_params;
 	u16			q_num_rx_buffers; /* Must be a power of two */
 	u16			q_num_tx_buffers; /* Must be a power of two */
diff --git a/drivers/net/ethernet/qlogic/qede/qede_ethtool.c b/drivers/net/ethernet/qlogic/qede/qede_ethtool.c
index c49dc10ce151..f0982f163670 100644
--- a/drivers/net/ethernet/qlogic/qede/qede_ethtool.c
+++ b/drivers/net/ethernet/qlogic/qede/qede_ethtool.c
@@ -569,6 +569,236 @@ static int qede_set_phys_id(struct net_device *dev,
 	return 0;
 }
 
+static int qede_get_rss_flags(struct qede_dev *edev, struct ethtool_rxnfc *info)
+{
+	info->data = RXH_IP_SRC | RXH_IP_DST;
+
+	switch (info->flow_type) {
+	case TCP_V4_FLOW:
+	case TCP_V6_FLOW:
+		info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
+		break;
+	case UDP_V4_FLOW:
+		if (edev->rss_params.rss_caps & QED_RSS_IPV4_UDP)
+			info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
+		break;
+	case UDP_V6_FLOW:
+		if (edev->rss_params.rss_caps & QED_RSS_IPV6_UDP)
+			info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
+		break;
+	case IPV4_FLOW:
+	case IPV6_FLOW:
+		break;
+	default:
+		info->data = 0;
+		break;
+	}
+
+	return 0;
+}
+
+static int qede_get_rxnfc(struct net_device *dev, struct ethtool_rxnfc *info,
+			  u32 *rules __always_unused)
+{
+	struct qede_dev *edev = netdev_priv(dev);
+
+	switch (info->cmd) {
+	case ETHTOOL_GRXRINGS:
+		info->data = edev->num_rss;
+		return 0;
+	case ETHTOOL_GRXFH:
+		return qede_get_rss_flags(edev, info);
+	default:
+		DP_ERR(edev, "Command parameters not supported\n");
+		return -EOPNOTSUPP;
+	}
+}
+
+static int qede_set_rss_flags(struct qede_dev *edev, struct ethtool_rxnfc *info)
+{
+	struct qed_update_vport_params vport_update_params;
+	u8 set_caps = 0, clr_caps = 0;
+
+	DP_VERBOSE(edev, QED_MSG_DEBUG,
+		   "Set rss flags command parameters: flow type = %d, data = %llu\n",
+		   info->flow_type, info->data);
+
+	switch (info->flow_type) {
+	case TCP_V4_FLOW:
+	case TCP_V6_FLOW:
+		/* For TCP only 4-tuple hash is supported */
+		if (info->data ^ (RXH_IP_SRC | RXH_IP_DST |
+				  RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
+			DP_INFO(edev, "Command parameters not supported\n");
+			return -EINVAL;
+		}
+		return 0;
+	case UDP_V4_FLOW:
+		/* For UDP either 2-tuple hash or 4-tuple hash is supported */
+		if (info->data == (RXH_IP_SRC | RXH_IP_DST |
+				   RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
+			set_caps = QED_RSS_IPV4_UDP;
+			DP_VERBOSE(edev, QED_MSG_DEBUG,
+				   "UDP 4-tuple enabled\n");
+		} else if (info->data == (RXH_IP_SRC | RXH_IP_DST)) {
+			clr_caps = QED_RSS_IPV4_UDP;
+			DP_VERBOSE(edev, QED_MSG_DEBUG,
+				   "UDP 4-tuple disabled\n");
+		} else {
+			return -EINVAL;
+		}
+		break;
+	case UDP_V6_FLOW:
+		/* For UDP either 2-tuple hash or 4-tuple hash is supported */
+		if (info->data == (RXH_IP_SRC | RXH_IP_DST |
+				   RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
+			set_caps = QED_RSS_IPV6_UDP;
+			DP_VERBOSE(edev, QED_MSG_DEBUG,
+				   "UDP 4-tuple enabled\n");
+		} else if (info->data == (RXH_IP_SRC | RXH_IP_DST)) {
+			clr_caps = QED_RSS_IPV6_UDP;
+			DP_VERBOSE(edev, QED_MSG_DEBUG,
+				   "UDP 4-tuple disabled\n");
+		} else {
+			return -EINVAL;
+		}
+		break;
+	case IPV4_FLOW:
+	case IPV6_FLOW:
+		/* For IP only 2-tuple hash is supported */
+		if (info->data ^ (RXH_IP_SRC | RXH_IP_DST)) {
+			DP_INFO(edev, "Command parameters not supported\n");
+			return -EINVAL;
+		}
+		return 0;
+	case SCTP_V4_FLOW:
+	case AH_ESP_V4_FLOW:
+	case AH_V4_FLOW:
+	case ESP_V4_FLOW:
+	case SCTP_V6_FLOW:
+	case AH_ESP_V6_FLOW:
+	case AH_V6_FLOW:
+	case ESP_V6_FLOW:
+	case IP_USER_FLOW:
+	case ETHER_FLOW:
+		/* RSS is not supported for these protocols */
+		if (info->data) {
+			DP_INFO(edev, "Command parameters not supported\n");
+			return -EINVAL;
+		}
+		return 0;
+	default:
+		return -EINVAL;
+	}
+
+	/* No action is needed if there is no change in the rss capability */
+	if (edev->rss_params.rss_caps == ((edev->rss_params.rss_caps &
+					   ~clr_caps) | set_caps))
+		return 0;
+
+	/* Update internal configuration */
+	edev->rss_params.rss_caps = (edev->rss_params.rss_caps & ~clr_caps) |
+				    set_caps;
+	edev->rss_params_inited |= QEDE_RSS_CAPS_INITED;
+
+	/* Re-configure if possible */
+	if (netif_running(edev->ndev)) {
+		memset(&vport_update_params, 0, sizeof(vport_update_params));
+		vport_update_params.update_rss_flg = 1;
+		vport_update_params.vport_id = 0;
+		memcpy(&vport_update_params.rss_params, &edev->rss_params,
+		       sizeof(vport_update_params.rss_params));
+		return edev->ops->vport_update(edev->cdev,
+					       &vport_update_params);
+	}
+
+	return 0;
+}
+
+static int qede_set_rxnfc(struct net_device *dev, struct ethtool_rxnfc *info)
+{
+	struct qede_dev *edev = netdev_priv(dev);
+
+	switch (info->cmd) {
+	case ETHTOOL_SRXFH:
+		return qede_set_rss_flags(edev, info);
+	default:
+		DP_INFO(edev, "Command parameters not supported\n");
+		return -EOPNOTSUPP;
+	}
+}
+
+static u32 qede_get_rxfh_indir_size(struct net_device *dev)
+{
+	return QED_RSS_IND_TABLE_SIZE;
+}
+
+static u32 qede_get_rxfh_key_size(struct net_device *dev)
+{
+	struct qede_dev *edev = netdev_priv(dev);
+
+	return sizeof(edev->rss_params.rss_key);
+}
+
+static int qede_get_rxfh(struct net_device *dev, u32 *indir, u8 *key, u8 *hfunc)
+{
+	struct qede_dev *edev = netdev_priv(dev);
+	int i;
+
+	if (hfunc)
+		*hfunc = ETH_RSS_HASH_TOP;
+
+	if (!indir)
+		return 0;
+
+	for (i = 0; i < QED_RSS_IND_TABLE_SIZE; i++)
+		indir[i] = edev->rss_params.rss_ind_table[i];
+
+	if (key)
+		memcpy(key, edev->rss_params.rss_key,
+		       qede_get_rxfh_key_size(dev));
+
+	return 0;
+}
+
+static int qede_set_rxfh(struct net_device *dev, const u32 *indir,
+			 const u8 *key, const u8 hfunc)
+{
+	struct qed_update_vport_params vport_update_params;
+	struct qede_dev *edev = netdev_priv(dev);
+	int i;
+
+	if (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP)
+		return -EOPNOTSUPP;
+
+	if (!indir && !key)
+		return 0;
+
+	if (indir) {
+		for (i = 0; i < QED_RSS_IND_TABLE_SIZE; i++)
+			edev->rss_params.rss_ind_table[i] = indir[i];
+		edev->rss_params_inited |= QEDE_RSS_INDIR_INITED;
+	}
+
+	if (key) {
+		memcpy(&edev->rss_params.rss_key, key,
+		       qede_get_rxfh_key_size(dev));
+		edev->rss_params_inited |= QEDE_RSS_KEY_INITED;
+	}
+
+	if (netif_running(edev->ndev)) {
+		memset(&vport_update_params, 0, sizeof(vport_update_params));
+		vport_update_params.update_rss_flg = 1;
+		vport_update_params.vport_id = 0;
+		memcpy(&vport_update_params.rss_params, &edev->rss_params,
+		       sizeof(vport_update_params.rss_params));
+		return edev->ops->vport_update(edev->cdev,
+					       &vport_update_params);
+	}
+
+	return 0;
+}
+
 static const struct ethtool_ops qede_ethtool_ops = {
 	.get_settings = qede_get_settings,
 	.set_settings = qede_set_settings,
@@ -585,7 +815,12 @@ static const struct ethtool_ops qede_ethtool_ops = {
 	.set_phys_id = qede_set_phys_id,
 	.get_ethtool_stats = qede_get_ethtool_stats,
 	.get_sset_count = qede_get_sset_count,
-
+	.get_rxnfc = qede_get_rxnfc,
+	.set_rxnfc = qede_set_rxnfc,
+	.get_rxfh_indir_size = qede_get_rxfh_indir_size,
+	.get_rxfh_key_size = qede_get_rxfh_key_size,
+	.get_rxfh = qede_get_rxfh,
+	.set_rxfh = qede_set_rxfh,
 	.get_channels = qede_get_channels,
 	.set_channels = qede_set_channels,
 };
diff --git a/drivers/net/ethernet/qlogic/qede/qede_main.c b/drivers/net/ethernet/qlogic/qede/qede_main.c
index 518af329502d..457caad2e752 100644
--- a/drivers/net/ethernet/qlogic/qede/qede_main.c
+++ b/drivers/net/ethernet/qlogic/qede/qede_main.c
@@ -141,19 +141,10 @@ static
 int __init qede_init(void)
 {
 	int ret;
-	u32 qed_ver;
 
 	pr_notice("qede_init: %s\n", version);
 
-	qed_ver = qed_get_protocol_version(QED_PROTOCOL_ETH);
-	if (qed_ver !=  QEDE_ETH_INTERFACE_VERSION) {
-		pr_notice("Version mismatch [%08x != %08x]\n",
-			  qed_ver,
-			  QEDE_ETH_INTERFACE_VERSION);
-		return -EINVAL;
-	}
-
-	qed_ops = qed_get_eth_ops(QEDE_ETH_INTERFACE_VERSION);
+	qed_ops = qed_get_eth_ops();
 	if (!qed_ops) {
 		pr_notice("Failed to get qed ethtool operations\n");
 		return -EINVAL;
@@ -2835,10 +2826,10 @@ static int qede_start_queues(struct qede_dev *edev)
 	int rc, tc, i;
 	int vlan_removal_en = 1;
 	struct qed_dev *cdev = edev->cdev;
-	struct qed_update_vport_rss_params *rss_params = &edev->rss_params;
 	struct qed_update_vport_params vport_update_params;
 	struct qed_queue_start_common_params q_params;
 	struct qed_start_vport_params start = {0};
+	bool reset_rss_indir = false;
 
 	if (!edev->num_rss) {
 		DP_ERR(edev,
@@ -2933,16 +2924,50 @@ static int qede_start_queues(struct qede_dev *edev)
 	/* Fill struct with RSS params */
 	if (QEDE_RSS_CNT(edev) > 1) {
 		vport_update_params.update_rss_flg = 1;
-		for (i = 0; i < 128; i++)
-			rss_params->rss_ind_table[i] =
-			ethtool_rxfh_indir_default(i, QEDE_RSS_CNT(edev));
-		netdev_rss_key_fill(rss_params->rss_key,
-				    sizeof(rss_params->rss_key));
+
+		/* Need to validate current RSS config uses valid entries */
+		for (i = 0; i < QED_RSS_IND_TABLE_SIZE; i++) {
+			if (edev->rss_params.rss_ind_table[i] >=
+			    edev->num_rss) {
+				reset_rss_indir = true;
+				break;
+			}
+		}
+
+		if (!(edev->rss_params_inited & QEDE_RSS_INDIR_INITED) ||
+		    reset_rss_indir) {
+			u16 val;
+
+			for (i = 0; i < QED_RSS_IND_TABLE_SIZE; i++) {
+				u16 indir_val;
+
+				val = QEDE_RSS_CNT(edev);
+				indir_val = ethtool_rxfh_indir_default(i, val);
+				edev->rss_params.rss_ind_table[i] = indir_val;
+			}
+			edev->rss_params_inited |= QEDE_RSS_INDIR_INITED;
+		}
+
+		if (!(edev->rss_params_inited & QEDE_RSS_KEY_INITED)) {
+			netdev_rss_key_fill(edev->rss_params.rss_key,
+					    sizeof(edev->rss_params.rss_key));
+			edev->rss_params_inited |= QEDE_RSS_KEY_INITED;
+		}
+
+		if (!(edev->rss_params_inited & QEDE_RSS_CAPS_INITED)) {
+			edev->rss_params.rss_caps = QED_RSS_IPV4 |
+						    QED_RSS_IPV6 |
+						    QED_RSS_IPV4_TCP |
+						    QED_RSS_IPV6_TCP;
+			edev->rss_params_inited |= QEDE_RSS_CAPS_INITED;
+		}
+
+		memcpy(&vport_update_params.rss_params, &edev->rss_params,
+		       sizeof(vport_update_params.rss_params));
 	} else {
-		memset(rss_params, 0, sizeof(*rss_params));
+		memset(&vport_update_params.rss_params, 0,
+		       sizeof(vport_update_params.rss_params));
 	}
-	memcpy(&vport_update_params.rss_params, rss_params,
-	       sizeof(*rss_params));
 
 	rc = edev->ops->vport_update(cdev, &vport_update_params);
 	if (rc) {
diff --git a/include/linux/qed/qed_eth_if.h b/include/linux/qed/qed_eth_if.h
index e1d69834a11f..795c9902e02f 100644
--- a/include/linux/qed/qed_eth_if.h
+++ b/include/linux/qed/qed_eth_if.h
@@ -27,6 +27,7 @@ struct qed_dev_eth_info {
 struct qed_update_vport_rss_params {
 	u16	rss_ind_table[128];
 	u32	rss_key[10];
+	u8	rss_caps;
 };
 
 struct qed_update_vport_params {
@@ -167,7 +168,7 @@ struct qed_eth_ops {
 				struct qed_eth_stats *stats);
 };
 
-const struct qed_eth_ops *qed_get_eth_ops(u32 version);
+const struct qed_eth_ops *qed_get_eth_ops(void);
 void qed_put_eth_ops(void);
 
 #endif
diff --git a/include/linux/qed/qed_if.h b/include/linux/qed/qed_if.h
index 1f7599c77cd4..67e8c206b2c1 100644
--- a/include/linux/qed/qed_if.h
+++ b/include/linux/qed/qed_if.h
@@ -271,15 +271,6 @@ struct qed_common_ops {
 		       enum qed_led_mode mode);
 };
 
-/**
- * @brief qed_get_protocol_version
- *
- * @param protocol
- *
- * @return version supported by qed for given protocol driver
- */
-u32 qed_get_protocol_version(enum qed_protocol protocol);
-
 #define MASK_FIELD(_name, _value) \
 	((_value) &= (_name ## _MASK))
 
@@ -524,4 +515,15 @@ static inline void internal_ram_wr(void __iomem *addr,
 	__internal_ram_wr(NULL, addr, size, data);
 }
 
+enum qed_rss_caps {
+	QED_RSS_IPV4		= 0x1,
+	QED_RSS_IPV6		= 0x2,
+	QED_RSS_IPV4_TCP	= 0x4,
+	QED_RSS_IPV6_TCP	= 0x8,
+	QED_RSS_IPV4_UDP	= 0x10,
+	QED_RSS_IPV6_UDP	= 0x20,
+};
+
+#define QED_RSS_IND_TABLE_SIZE 128
+#define QED_RSS_KEY_SIZE 10 /* size in 32b chunks */
 #endif