qed*: Refactor mf_mode to consist of bits.

`mf_mode' field indicates the multi-partitioning mode the device is
configured to. This method doesn't scale very well, adding a new MF mode
requires going over all the existing conditions, and deciding whether those
are needed for the new mode or not.
The patch defines a set of bit-fields for modes which are derived according
to the mode info shared by the MFW and all the configuration would be made
according to those. To add a new mode, there would be a single place where
we'll need to go and choose which bits apply and which don't.

Signed-off-by: Sudarsana Reddy Kalluru <Sudarsana.Kalluru@cavium.com>
Signed-off-by: Ariel Elior <ariel.elior@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/qlogic/qed/qed.h

@@ -439,6 +439,41 @@ struct qed_fw_data {
 	u32			init_ops_size;
 };
 
+enum qed_mf_mode_bit {
+	/* Supports PF-classification based on tag */
+	QED_MF_OVLAN_CLSS,
+
+	/* Supports PF-classification based on MAC */
+	QED_MF_LLH_MAC_CLSS,
+
+	/* Supports PF-classification based on protocol type */
+	QED_MF_LLH_PROTO_CLSS,
+
+	/* Requires a default PF to be set */
+	QED_MF_NEED_DEF_PF,
+
+	/* Allow LL2 to multicast/broadcast */
+	QED_MF_LL2_NON_UNICAST,
+
+	/* Allow Cross-PF [& child VFs] Tx-switching */
+	QED_MF_INTER_PF_SWITCH,
+
+	/* Unified Fabtic Port support enabled */
+	QED_MF_UFP_SPECIFIC,
+
+	/* Disable Accelerated Receive Flow Steering (aRFS) */
+	QED_MF_DISABLE_ARFS,
+
+	/* Use vlan for steering */
+	QED_MF_8021Q_TAGGING,
+
+	/* Use stag for steering */
+	QED_MF_8021AD_TAGGING,
+
+	/* Allow DSCP to TC mapping */
+	QED_MF_DSCP_TO_TC_MAP,
+};
+
 enum BAR_ID {
 	BAR_ID_0,		/* used for GRC */
 	BAR_ID_1		/* Used for doorbells */
@@ -669,10 +704,8 @@ struct qed_dev {
 	u8				num_funcs_in_port;
 
 	u8				path_id;
-	enum qed_mf_mode		mf_mode;
-#define IS_MF_DEFAULT(_p_hwfn)  (((_p_hwfn)->cdev)->mf_mode == QED_MF_DEFAULT)
-#define IS_MF_SI(_p_hwfn)       (((_p_hwfn)->cdev)->mf_mode == QED_MF_NPAR)
-#define IS_MF_SD(_p_hwfn)       (((_p_hwfn)->cdev)->mf_mode == QED_MF_OVLAN)
+
+	unsigned long			mf_bits;
 
 	int				pcie_width;
 	int				pcie_speed;

drivers/net/ethernet/qlogic/qed/qed_dev.c

@@ -1149,18 +1149,10 @@ static int qed_calc_hw_mode(struct qed_hwfn *p_hwfn)
 		return -EINVAL;
 	}
 
-	switch (p_hwfn->cdev->mf_mode) {
-	case QED_MF_DEFAULT:
-	case QED_MF_NPAR:
-		hw_mode |= 1 << MODE_MF_SI;
-		break;
-	case QED_MF_OVLAN:
+	if (test_bit(QED_MF_OVLAN_CLSS, &p_hwfn->cdev->mf_bits))
 		hw_mode |= 1 << MODE_MF_SD;
-		break;
-	default:
-		DP_NOTICE(p_hwfn, "Unsupported MF mode, init as DEFAULT\n");
+	else
 		hw_mode |= 1 << MODE_MF_SI;
-	}
 
 	hw_mode |= 1 << MODE_ASIC;
 
@@ -1557,7 +1549,6 @@ static int qed_hw_init_pf(struct qed_hwfn *p_hwfn,
 
 		/* send function start command */
 		rc = qed_sp_pf_start(p_hwfn, p_ptt, p_tunn,
-				     p_hwfn->cdev->mf_mode,
 				     allow_npar_tx_switch);
 		if (rc) {
 			DP_NOTICE(p_hwfn, "Function start ramrod failed\n");
@@ -2651,17 +2642,25 @@ static int qed_hw_get_nvm_info(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)
 
 	switch (mf_mode) {
 	case NVM_CFG1_GLOB_MF_MODE_MF_ALLOWED:
-		p_hwfn->cdev->mf_mode = QED_MF_OVLAN;
+		p_hwfn->cdev->mf_bits = BIT(QED_MF_OVLAN_CLSS);
 		break;
 	case NVM_CFG1_GLOB_MF_MODE_NPAR1_0:
-		p_hwfn->cdev->mf_mode = QED_MF_NPAR;
+		p_hwfn->cdev->mf_bits = BIT(QED_MF_LLH_MAC_CLSS) |
+					BIT(QED_MF_LLH_PROTO_CLSS) |
+					BIT(QED_MF_LL2_NON_UNICAST) |
+					BIT(QED_MF_INTER_PF_SWITCH);
 		break;
 	case NVM_CFG1_GLOB_MF_MODE_DEFAULT:
-		p_hwfn->cdev->mf_mode = QED_MF_DEFAULT;
+		p_hwfn->cdev->mf_bits = BIT(QED_MF_LLH_MAC_CLSS) |
+					BIT(QED_MF_LLH_PROTO_CLSS) |
+					BIT(QED_MF_LL2_NON_UNICAST);
+		if (QED_IS_BB(p_hwfn->cdev))
+			p_hwfn->cdev->mf_bits |= BIT(QED_MF_NEED_DEF_PF);
 		break;
 	}
-	DP_INFO(p_hwfn, "Multi function mode is %08x\n",
-		p_hwfn->cdev->mf_mode);
+
+	DP_INFO(p_hwfn, "Multi function mode is 0x%lx\n",
+		p_hwfn->cdev->mf_bits);
 
 	/* Read Multi-function information from shmem */
 	addr = MCP_REG_SCRATCH + nvm_cfg1_offset +
@@ -3462,7 +3461,7 @@ int qed_llh_add_mac_filter(struct qed_hwfn *p_hwfn,
 	u32 high = 0, low = 0, en;
 	int i;
 
-	if (!(IS_MF_SI(p_hwfn) || IS_MF_DEFAULT(p_hwfn)))
+	if (!test_bit(QED_MF_LLH_MAC_CLSS, &p_hwfn->cdev->mf_bits))
 		return 0;
 
 	qed_llh_mac_to_filter(&high, &low, p_filter);
@@ -3507,7 +3506,7 @@ void qed_llh_remove_mac_filter(struct qed_hwfn *p_hwfn,
 	u32 high = 0, low = 0;
 	int i;
 
-	if (!(IS_MF_SI(p_hwfn) || IS_MF_DEFAULT(p_hwfn)))
+	if (!test_bit(QED_MF_LLH_MAC_CLSS, &p_hwfn->cdev->mf_bits))
 		return;
 
 	qed_llh_mac_to_filter(&high, &low, p_filter);
@@ -3549,7 +3548,7 @@ qed_llh_add_protocol_filter(struct qed_hwfn *p_hwfn,
 	u32 high = 0, low = 0, en;
 	int i;
 
-	if (!(IS_MF_SI(p_hwfn) || IS_MF_DEFAULT(p_hwfn)))
+	if (!test_bit(QED_MF_LLH_PROTO_CLSS, &p_hwfn->cdev->mf_bits))
 		return 0;
 
 	switch (type) {
@@ -3647,7 +3646,7 @@ qed_llh_remove_protocol_filter(struct qed_hwfn *p_hwfn,
 	u32 high = 0, low = 0;
 	int i;
 
-	if (!(IS_MF_SI(p_hwfn) || IS_MF_DEFAULT(p_hwfn)))
+	if (!test_bit(QED_MF_LLH_PROTO_CLSS, &p_hwfn->cdev->mf_bits))
 		return;
 
 	switch (type) {

drivers/net/ethernet/qlogic/qed/qed_ll2.c

@@ -922,9 +922,9 @@ static int qed_sp_ll2_rx_queue_start(struct qed_hwfn *p_hwfn,
 	p_ramrod->queue_id = p_ll2_conn->queue_id;
 	p_ramrod->main_func_queue = p_ll2_conn->main_func_queue ? 1 : 0;
 
-	if ((IS_MF_DEFAULT(p_hwfn) || IS_MF_SI(p_hwfn)) &&
-	    p_ramrod->main_func_queue && (conn_type != QED_LL2_TYPE_ROCE) &&
-	    (conn_type != QED_LL2_TYPE_IWARP)) {
+	if (test_bit(QED_MF_LL2_NON_UNICAST, &p_hwfn->cdev->mf_bits) &&
+	    p_ramrod->main_func_queue && conn_type != QED_LL2_TYPE_ROCE &&
+	    conn_type != QED_LL2_TYPE_IWARP) {
 		p_ramrod->mf_si_bcast_accept_all = 1;
 		p_ramrod->mf_si_mcast_accept_all = 1;
 	} else {

drivers/net/ethernet/qlogic/qed/qed_main.c

@@ -264,7 +264,8 @@ int qed_fill_dev_info(struct qed_dev *cdev,
 	dev_info->pci_mem_end = cdev->pci_params.mem_end;
 	dev_info->pci_irq = cdev->pci_params.irq;
 	dev_info->rdma_supported = QED_IS_RDMA_PERSONALITY(p_hwfn);
-	dev_info->is_mf_default = IS_MF_DEFAULT(&cdev->hwfns[0]);
+	dev_info->is_mf_default = !test_bit(QED_MF_LLH_MAC_CLSS,
+					    &cdev->mf_bits);
 	dev_info->dev_type = cdev->type;
 	ether_addr_copy(dev_info->hw_mac, hw_info->hw_mac_addr);
 
@@ -273,7 +274,8 @@ int qed_fill_dev_info(struct qed_dev *cdev,
 		dev_info->fw_minor = FW_MINOR_VERSION;
 		dev_info->fw_rev = FW_REVISION_VERSION;
 		dev_info->fw_eng = FW_ENGINEERING_VERSION;
-		dev_info->mf_mode = cdev->mf_mode;
+		dev_info->b_inter_pf_switch = test_bit(QED_MF_INTER_PF_SWITCH,
+						       &cdev->mf_bits);
 		dev_info->tx_switching = true;
 
 		if (hw_info->b_wol_support == QED_WOL_SUPPORT_PME)

drivers/net/ethernet/qlogic/qed/qed_sp.h

@@ -416,7 +416,6 @@ int qed_sp_init_request(struct qed_hwfn *p_hwfn,
  * @param p_hwfn
  * @param p_ptt
  * @param p_tunn
- * @param mode
  * @param allow_npar_tx_switch
  *
  * @return int
@@ -425,7 +424,7 @@ int qed_sp_init_request(struct qed_hwfn *p_hwfn,
 int qed_sp_pf_start(struct qed_hwfn *p_hwfn,
 		    struct qed_ptt *p_ptt,
 		    struct qed_tunnel_info *p_tunn,
-		    enum qed_mf_mode mode, bool allow_npar_tx_switch);
+		    bool allow_npar_tx_switch);
 
 /**
  * @brief qed_sp_pf_update - PF Function Update Ramrod

drivers/net/ethernet/qlogic/qed/qed_sp_commands.c

@@ -306,7 +306,7 @@ qed_tunn_set_pf_start_params(struct qed_hwfn *p_hwfn,
 int qed_sp_pf_start(struct qed_hwfn *p_hwfn,
 		    struct qed_ptt *p_ptt,
 		    struct qed_tunnel_info *p_tunn,
-		    enum qed_mf_mode mode, bool allow_npar_tx_switch)
+		    bool allow_npar_tx_switch)
 {
 	struct pf_start_ramrod_data *p_ramrod = NULL;
 	u16 sb = qed_int_get_sp_sb_id(p_hwfn);
@@ -339,18 +339,10 @@ int qed_sp_pf_start(struct qed_hwfn *p_hwfn,
 	p_ramrod->dont_log_ramrods	= 0;
 	p_ramrod->log_type_mask		= cpu_to_le16(0xf);
 
-	switch (mode) {
-	case QED_MF_DEFAULT:
-	case QED_MF_NPAR:
-		p_ramrod->mf_mode = MF_NPAR;
-		break;
-	case QED_MF_OVLAN:
+	if (test_bit(QED_MF_OVLAN_CLSS, &p_hwfn->cdev->mf_bits))
 		p_ramrod->mf_mode = MF_OVLAN;
-		break;
-	default:
-		DP_NOTICE(p_hwfn, "Unsupported MF mode, init as DEFAULT\n");
+	else
 		p_ramrod->mf_mode = MF_NPAR;
-	}
 
 	p_ramrod->outer_tag_config.outer_tag.tci =
 		cpu_to_le16(p_hwfn->hw_info.ovlan);
@@ -365,7 +357,7 @@ int qed_sp_pf_start(struct qed_hwfn *p_hwfn,
 
 	qed_tunn_set_pf_start_params(p_hwfn, p_tunn, &p_ramrod->tunnel_config);
 
-	if (IS_MF_SI(p_hwfn))
+	if (test_bit(QED_MF_INTER_PF_SWITCH, &p_hwfn->cdev->mf_bits))
 		p_ramrod->allow_npar_tx_switching = allow_npar_tx_switch;
 
 	switch (p_hwfn->hw_info.personality) {

drivers/net/ethernet/qlogic/qede/qede_main.c

@@ -199,7 +199,7 @@ static int qede_sriov_configure(struct pci_dev *pdev, int num_vfs_param)
 
 	/* Enable/Disable Tx switching for PF */
 	if ((rc == num_vfs_param) && netif_running(edev->ndev) &&
-	    qed_info->mf_mode != QED_MF_NPAR && qed_info->tx_switching) {
+	    !qed_info->b_inter_pf_switch && qed_info->tx_switching) {
 		vport_params->vport_id = 0;
 		vport_params->update_tx_switching_flg = 1;
 		vport_params->tx_switching_flg = num_vfs_param ? 1 : 0;
@@ -1928,7 +1928,7 @@ static int qede_start_queues(struct qede_dev *edev, bool clear_stats)
 	vport_update_params->update_vport_active_flg = 1;
 	vport_update_params->vport_active_flg = 1;
 
-	if ((qed_info->mf_mode == QED_MF_NPAR || pci_num_vf(edev->pdev)) &&
+	if ((qed_info->b_inter_pf_switch || pci_num_vf(edev->pdev)) &&
 	    qed_info->tx_switching) {
 		vport_update_params->update_tx_switching_flg = 1;
 		vport_update_params->tx_switching_flg = 1;

include/linux/qed/qed_if.h

@@ -359,7 +359,7 @@ struct qed_dev_info {
 #define QED_MFW_VERSION_3_OFFSET	24
 
 	u32		flash_size;
-	u8		mf_mode;
+	bool		b_inter_pf_switch;
 	bool		tx_switching;
 	bool		rdma_supported;
 	u16		mtu;