net/bnxt: add HWRM VNIC free

In this patch we add a new HWRM API to free a VNIC.

New HWRM call:
bnxt_hwrm_vnic_free:
	Frees a vnic allocated by the bnxt_hwrm_vnic_alloc() function.

Signed-off-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
Signed-off-by: Stephen Hurd <stephen.hurd@broadcom.com>
Reviewed-by: David Christensen <david.christensen@broadcom.com>

drivers/net/bnxt/bnxt_hwrm.c

@@ -553,6 +553,27 @@ int bnxt_hwrm_vnic_alloc(struct bnxt *bp, struct bnxt_vnic_info *vnic)
 	return rc;
 }
 
+int bnxt_hwrm_vnic_free(struct bnxt *bp, struct bnxt_vnic_info *vnic)
+{
+	int rc = 0;
+	struct hwrm_vnic_free_input req = {.req_type = 0 };
+	struct hwrm_vnic_free_output *resp = bp->hwrm_cmd_resp_addr;
+
+	if (vnic->fw_vnic_id == INVALID_HW_RING_ID)
+		return rc;
+
+	HWRM_PREP(req, VNIC_FREE, -1, resp);
+
+	req.vnic_id = rte_cpu_to_le_16(vnic->fw_vnic_id);
+
+	rc = bnxt_hwrm_send_message(bp, &req, sizeof(req));
+
+	HWRM_CHECK_RESULT;
+
+	vnic->fw_vnic_id = INVALID_HW_RING_ID;
+	return rc;
+}
+
 /*
  * HWRM utility functions
  */

drivers/net/bnxt/bnxt_hwrm.h

@@ -63,6 +63,7 @@ int bnxt_hwrm_stat_clear(struct bnxt *bp, struct bnxt_cp_ring_info *cpr);
 
 int bnxt_hwrm_ver_get(struct bnxt *bp);
 
+int bnxt_hwrm_vnic_free(struct bnxt *bp, struct bnxt_vnic_info *vnic);
 int bnxt_hwrm_vnic_alloc(struct bnxt *bp, struct bnxt_vnic_info *vnic);
 
 int bnxt_clear_all_hwrm_stat_ctxs(struct bnxt *bp);

drivers/net/bnxt/hsi_struct_def_dpdk.h

@@ -90,6 +90,7 @@ struct ctx_hw_stats64 {
 #define HWRM_PORT_PHY_CFG		(UINT32_C(0x20))
 #define HWRM_QUEUE_QPORTCFG		(UINT32_C(0x30))
 #define HWRM_VNIC_ALLOC			(UINT32_C(0x40))
+#define HWRM_VNIC_FREE			(UINT32_C(0x41))
 #define HWRM_CFA_L2_FILTER_ALLOC	(UINT32_C(0x90))
 #define HWRM_CFA_L2_FILTER_FREE		(UINT32_C(0x91))
 #define HWRM_CFA_L2_FILTER_CFG		(UINT32_C(0x92))
@@ -3218,6 +3219,87 @@ struct hwrm_vnic_alloc_output {
 	uint8_t valid;
 } __attribute__((packed));
 
+/* hwrm_vnic_free */
+/*
+ * Description: Free a VNIC resource. Idle any resources associated with the
+ * VNIC as well as the VNIC. Reset and release all resources associated with the
+ * VNIC.
+ */
+
+/* Input (24 bytes) */
+struct hwrm_vnic_free_input {
+	/*
+	 * This value indicates what type of request this is. The format for the
+	 * rest of the command is determined by this field.
+	 */
+	uint16_t req_type;
+
+	/*
+	 * This value indicates the what completion ring the request will be
+	 * optionally completed on. If the value is -1, then no CR completion
+	 * will be generated. Any other value must be a valid CR ring_id value
+	 * for this function.
+	 */
+	uint16_t cmpl_ring;
+
+	/* This value indicates the command sequence number. */
+	uint16_t seq_id;
+
+	/*
+	 * Target ID of this command. 0x0 - 0xFFF8 - Used for function ids
+	 * 0xFFF8 - 0xFFFE - Reserved for internal processors 0xFFFF - HWRM
+	 */
+	uint16_t target_id;
+
+	/*
+	 * This is the host address where the response will be written when the
+	 * request is complete. This area must be 16B aligned and must be
+	 * cleared to zero before the request is made.
+	 */
+	uint64_t resp_addr;
+
+	/* Logical vnic ID */
+	uint32_t vnic_id;
+
+	uint32_t unused_0;
+} __attribute__((packed));
+
+/* Output (16 bytes) */
+struct hwrm_vnic_free_output {
+	/*
+	 * Pass/Fail or error type Note: receiver to verify the in parameters,
+	 * and fail the call with an error when appropriate
+	 */
+	uint16_t error_code;
+
+	/* This field returns the type of original request. */
+	uint16_t req_type;
+
+	/* This field provides original sequence number of the command. */
+	uint16_t seq_id;
+
+	/*
+	 * This field is the length of the response in bytes. The last byte of
+	 * the response is a valid flag that will read as '1' when the command
+	 * has been completely written to memory.
+	 */
+	uint16_t resp_len;
+
+	uint32_t unused_0;
+	uint8_t unused_1;
+	uint8_t unused_2;
+	uint8_t unused_3;
+
+	/*
+	 * This field is used in Output records to indicate that the output is
+	 * completely written to RAM. This field should be read as '1' to
+	 * indicate that the output has been completely written. When writing a
+	 * command completion or response to an internal processor, the order of
+	 * writes has to be such that this field is written last.
+	 */
+	uint8_t valid;
+} __attribute__((packed));
+
 /* hwrm_vnic_rss_cfg */
 /* Description: This function is used to enable RSS configuration. */