[dpdk-dev] [PATCH 2/3] net/ixgbe: enable promiscous mode on PF host

[Wei Zhao <wei.zhao1@intel.com>]

There is need to PF host promiscous mode enable. For ixgbe,
in order to support VF vlan promiscuous or unicast promiscuous,
we need to set PF host register PFVML2FLT of bit UPE and VPE.
It also align to ixgbe kernel code version 5.5.3.

Fixes: 72dec9e37a84 ("ixgbe: support multicast promiscuous mode on VF")

Signed-off-by: Wei Zhao <wei.zhao1@intel.com>
---
 drivers/net/ixgbe/ixgbe_ethdev.h |  1 +
 drivers/net/ixgbe/ixgbe_pf.c     | 78 ++++++++++++++++++++++++++++------------
 2 files changed, 57 insertions(+), 22 deletions(-)

diff --git a/drivers/net/ixgbe/ixgbe_ethdev.h b/drivers/net/ixgbe/ixgbe_ethdev.h
index d0b9396..e81f152 100644
--- a/drivers/net/ixgbe/ixgbe_ethdev.h
+++ b/drivers/net/ixgbe/ixgbe_ethdev.h
@@ -265,6 +265,7 @@ struct ixgbe_vf_info {
 	uint8_t spoofchk_enabled;
 	uint8_t api_version;
 	uint16_t switch_domain_id;
+	uint16_t xcast_mode;
 };
 
 /*
diff --git a/drivers/net/ixgbe/ixgbe_pf.c b/drivers/net/ixgbe/ixgbe_pf.c
index 4b833ff..c9d1a1c 100644
--- a/drivers/net/ixgbe/ixgbe_pf.c
+++ b/drivers/net/ixgbe/ixgbe_pf.c
@@ -408,23 +408,6 @@ ixgbe_vf_reset_msg(struct rte_eth_dev *dev, uint16_t vf)
 }
 
 static int
-ixgbe_enable_vf_mc_promisc(struct rte_eth_dev *dev, uint32_t vf)
-{
-	struct ixgbe_hw *hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
-	uint32_t vmolr;
-
-	vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
-
-	RTE_LOG(INFO, PMD, "VF %u: enabling multicast promiscuous\n", vf);
-
-	vmolr |= IXGBE_VMOLR_MPE;
-
-	IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
-
-	return 0;
-}
-
-static int
 ixgbe_disable_vf_mc_promisc(struct rte_eth_dev *dev, uint32_t vf)
 {
 	struct ixgbe_hw *hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
@@ -688,19 +671,70 @@ ixgbe_set_vf_mc_promisc(struct rte_eth_dev *dev, uint32_t vf, uint32_t *msgbuf)
 {
 	struct ixgbe_vf_info *vfinfo =
 		*(IXGBE_DEV_PRIVATE_TO_P_VFDATA(dev->data->dev_private));
-	bool enable = !!msgbuf[1];	/* msgbuf contains the flag to enable */
+	struct ixgbe_hw *hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+	int xcast_mode = msgbuf[1];	/* msgbuf contains the flag to enable */
+	u32 vmolr, fctrl, disable, enable;
 
 	switch (vfinfo[vf].api_version) {
 	case ixgbe_mbox_api_12:
+		/* promisc introduced in 1.3 version */
+		if (xcast_mode == IXGBEVF_XCAST_MODE_PROMISC)
+			return -EOPNOTSUPP;
+		break;
+		/* Fall threw */
+	case ixgbe_mbox_api_13:
 		break;
 	default:
 		return -1;
 	}
 
-	if (enable)
-		return ixgbe_enable_vf_mc_promisc(dev, vf);
-	else
-		return ixgbe_disable_vf_mc_promisc(dev, vf);
+	if (vfinfo[vf].xcast_mode == xcast_mode)
+		goto out;
+
+	switch (xcast_mode) {
+	case IXGBEVF_XCAST_MODE_NONE:
+		disable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE |
+			  IXGBE_VMOLR_MPE | IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE;
+		enable = 0;
+		break;
+	case IXGBEVF_XCAST_MODE_MULTI:
+		disable = IXGBE_VMOLR_MPE | IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE;
+		enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE;
+		break;
+	case IXGBEVF_XCAST_MODE_ALLMULTI:
+		disable = IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE;
+		enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE | IXGBE_VMOLR_MPE;
+		break;
+	case IXGBEVF_XCAST_MODE_PROMISC:
+		if (hw->mac.type <= ixgbe_mac_82599EB)
+			return -1;
+
+		fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
+		if (!(fctrl & IXGBE_FCTRL_UPE)) {
+			/* VF promisc requires PF in promisc */
+			RTE_LOG(ERR, PMD,
+			       "Enabling VF promisc requires PF in promisc\n");
+			return -1;
+		}
+
+		disable = 0;
+		enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE |
+			 IXGBE_VMOLR_MPE | IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE;
+		break;
+	default:
+		return -1;
+	}
+
+	vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
+	vmolr &= ~disable;
+	vmolr |= enable;
+	IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
+	vfinfo[vf].xcast_mode = xcast_mode;
+
+out:
+	msgbuf[1] = xcast_mode;
+
+	return 0;
 }
 
 static int
-- 
2.7.5