[PATCH net-next v2 3/4] octeon_ep: control net framework to support VF offloads

[Shinas Rasheed]

Inquire firmware on supported offloads, as well as convey offloads
enabled dynamically to firmware for the VFs. Implement control net API
to support the same.

Signed-off-by: Shinas Rasheed <srasheed@xxxxxxxxxxx>
---
V2:
  - No changes

V1: https://lore.kernel.org/all/20231208070352.2606192-4-srasheed@xxxxxxxxxxx/

 .../marvell/octeon_ep/octep_pfvf_mbox.c       | 47 +++++++++++++++++++
 .../marvell/octeon_ep/octep_pfvf_mbox.h       | 21 ++++++++-
 2 files changed, 67 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/marvell/octeon_ep/octep_pfvf_mbox.c b/drivers/net/ethernet/marvell/octeon_ep/octep_pfvf_mbox.c
index baffe298a2a0..57e0184840c2 100644
--- a/drivers/net/ethernet/marvell/octeon_ep/octep_pfvf_mbox.c
+++ b/drivers/net/ethernet/marvell/octeon_ep/octep_pfvf_mbox.c
@@ -159,6 +159,47 @@ static void octep_pfvf_dev_remove(struct octep_device *oct,  u32 vf_id,
 	rsp->s.type = OCTEP_PFVF_MBOX_TYPE_RSP_ACK;
 }
 
+static void octep_pfvf_get_fw_info(struct octep_device *oct,  u32 vf_id,
+				   union octep_pfvf_mbox_word cmd,
+				   union octep_pfvf_mbox_word *rsp)
+{
+	struct octep_fw_info fw_info;
+	int err;
+
+	err = octep_ctrl_net_get_info(oct, vf_id, &fw_info);
+	if (err) {
+		rsp->s_fw_info.type = OCTEP_PFVF_MBOX_TYPE_RSP_NACK;
+		dev_err(&oct->pdev->dev, "Get VF info failed via host control Mbox\n");
+		return;
+	}
+
+	rsp->s_fw_info.pkind = fw_info.pkind;
+	rsp->s_fw_info.fsz = fw_info.fsz;
+	rsp->s_fw_info.rx_ol_flags = fw_info.rx_ol_flags;
+	rsp->s_fw_info.tx_ol_flags = fw_info.tx_ol_flags;
+
+	rsp->s_fw_info.type = OCTEP_PFVF_MBOX_TYPE_RSP_ACK;
+}
+
+static void octep_pfvf_set_offloads(struct octep_device *oct, u32 vf_id,
+				    union octep_pfvf_mbox_word cmd,
+				    union octep_pfvf_mbox_word *rsp)
+{
+	struct octep_ctrl_net_offloads offloads = {
+		.rx_offloads = cmd.s_offloads.rx_ol_flags,
+		.tx_offloads = cmd.s_offloads.tx_ol_flags
+	};
+	int err;
+
+	err = octep_ctrl_net_set_offloads(oct, vf_id, &offloads, true);
+	if (err) {
+		rsp->s_offloads.type = OCTEP_PFVF_MBOX_TYPE_RSP_NACK;
+		dev_err(&oct->pdev->dev, "Set VF offloads failed via host control Mbox\n");
+		return;
+	}
+	rsp->s_offloads.type = OCTEP_PFVF_MBOX_TYPE_RSP_ACK;
+}
+
 int octep_setup_pfvf_mbox(struct octep_device *oct)
 {
 	int i = 0, num_vfs = 0, rings_per_vf = 0;
@@ -335,6 +376,12 @@ void octep_pfvf_mbox_work(struct work_struct *work)
 	case OCTEP_PFVF_MBOX_CMD_DEV_REMOVE:
 		octep_pfvf_dev_remove(oct, vf_id, cmd, &rsp);
 		break;
+	case OCTEP_PFVF_MBOX_CMD_GET_FW_INFO:
+		octep_pfvf_get_fw_info(oct, vf_id, cmd, &rsp);
+		break;
+	case OCTEP_PFVF_MBOX_CMD_SET_OFFLOADS:
+		octep_pfvf_set_offloads(oct, vf_id, cmd, &rsp);
+		break;
 	default:
 		dev_err(&oct->pdev->dev, "PF-VF mailbox: invalid opcode %d\n", cmd.s.opcode);
 		rsp.s.type = OCTEP_PFVF_MBOX_TYPE_RSP_NACK;
diff --git a/drivers/net/ethernet/marvell/octeon_ep/octep_pfvf_mbox.h b/drivers/net/ethernet/marvell/octeon_ep/octep_pfvf_mbox.h
index af4dcf5ef7f1..c18a9f26fc31 100644
--- a/drivers/net/ethernet/marvell/octeon_ep/octep_pfvf_mbox.h
+++ b/drivers/net/ethernet/marvell/octeon_ep/octep_pfvf_mbox.h
@@ -18,9 +18,10 @@
 enum octep_pfvf_mbox_version {
 	OCTEP_PFVF_MBOX_VERSION_V0,
 	OCTEP_PFVF_MBOX_VERSION_V1,
+	OCTEP_PFVF_MBOX_VERSION_V2,
 };
 
-#define OCTEP_PFVF_MBOX_VERSION_CURRENT	OCTEP_PFVF_MBOX_VERSION_V1
+#define OCTEP_PFVF_MBOX_VERSION_CURRENT	OCTEP_PFVF_MBOX_VERSION_V2
 
 enum octep_pfvf_mbox_opcode {
 	OCTEP_PFVF_MBOX_CMD_VERSION,
@@ -34,6 +35,8 @@ enum octep_pfvf_mbox_opcode {
 	OCTEP_PFVF_MBOX_CMD_GET_LINK_STATUS,
 	OCTEP_PFVF_MBOX_CMD_GET_MTU,
 	OCTEP_PFVF_MBOX_CMD_DEV_REMOVE,
+	OCTEP_PFVF_MBOX_CMD_GET_FW_INFO,
+	OCTEP_PFVF_MBOX_CMD_SET_OFFLOADS,
 	OCTEP_PFVF_MBOX_CMD_MAX,
 };
 
@@ -138,6 +141,22 @@ union octep_pfvf_mbox_word {
 		u64 status:1;
 		u64 rsvd:53;
 	} s_link_status;
+	struct {
+		u64 opcode:8;
+		u64 type:2;
+		u64 pkind:8;
+		u64 fsz:8;
+		u64 rx_ol_flags:16;
+		u64 tx_ol_flags:16;
+		u64 rsvd:6;
+	} s_fw_info;
+	struct {
+		u64 opcode:8;
+		u64 type:2;
+		u64 rsvd:22;
+		u64 rx_ol_flags:16;
+		u64 tx_ol_flags:16;
+	} s_offloads;
 } __packed;
 
 void octep_pfvf_mbox_work(struct work_struct *work);
-- 
2.25.1