bnxt_en: Add support to call FW to update a VNIC

Add the function bnxt_hwrm_vnic_update() to call FW to update
a VNIC.  This call can be used when disabling and enabling a
receive ring within a VNIC.  The mru which is the maximum receive
size of packets received by the VNIC can be updated.

Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David Wei <dw@davidwei.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/broadcom/bnxt/bnxt.c

@@ -10089,6 +10089,26 @@ static int __bnxt_setup_vnic(struct bnxt *bp, struct bnxt_vnic_info *vnic)
 	return rc;
 }
 
+int bnxt_hwrm_vnic_update(struct bnxt *bp, struct bnxt_vnic_info *vnic,
+			  u8 valid)
+{
+	struct hwrm_vnic_update_input *req;
+	int rc;
+
+	rc = hwrm_req_init(bp, req, HWRM_VNIC_UPDATE);
+	if (rc)
+		return rc;
+
+	req->vnic_id = cpu_to_le32(vnic->fw_vnic_id);
+
+	if (valid & VNIC_UPDATE_REQ_ENABLES_MRU_VALID)
+		req->mru = cpu_to_le16(vnic->mru);
+
+	req->enables = cpu_to_le32(valid);
+
+	return hwrm_req_send(bp, req);
+}
+
 int bnxt_hwrm_vnic_rss_cfg_p5(struct bnxt *bp, struct bnxt_vnic_info *vnic)
 {
 	int rc;

drivers/net/ethernet/broadcom/bnxt/bnxt.h

@@ -1250,6 +1250,7 @@ struct bnxt_vnic_info {
 #define BNXT_MAX_CTX_PER_VNIC	8
 	u16		fw_rss_cos_lb_ctx[BNXT_MAX_CTX_PER_VNIC];
 	u16		fw_l2_ctx_id;
+	u16		mru;
 #define BNXT_MAX_UC_ADDRS	4
 	struct bnxt_l2_filter *l2_filters[BNXT_MAX_UC_ADDRS];
 				/* index 0 always dev_addr */
@@ -2838,6 +2839,8 @@ int bnxt_hwrm_free_wol_fltr(struct bnxt *bp);
 int bnxt_hwrm_func_resc_qcaps(struct bnxt *bp, bool all);
 int bnxt_hwrm_func_qcaps(struct bnxt *bp);
 int bnxt_hwrm_fw_set_time(struct bnxt *);
+int bnxt_hwrm_vnic_update(struct bnxt *bp, struct bnxt_vnic_info *vnic,
+			  u8 valid);
 int bnxt_hwrm_vnic_rss_cfg_p5(struct bnxt *bp, struct bnxt_vnic_info *vnic);
 int __bnxt_setup_vnic_p5(struct bnxt *bp, struct bnxt_vnic_info *vnic);
 void bnxt_del_one_rss_ctx(struct bnxt *bp, struct bnxt_rss_ctx *rss_ctx,