bnxt_en: Add support for flashing the device via devlink

Use the same bnxt_flash_package_from_file() function to support
devlink flash operation.

Cc: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Vasundhara Volam <vasundhara-v.volam@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>

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

@@ -14,6 +14,25 @@
 #include "bnxt.h"
 #include "bnxt_vfr.h"
 #include "bnxt_devlink.h"
+#include "bnxt_ethtool.h"
+
+static int
+bnxt_dl_flash_update(struct devlink *dl, const char *filename,
+		     const char *region, struct netlink_ext_ack *extack)
+{
+	struct bnxt *bp = bnxt_get_bp_from_dl(dl);
+
+	if (region)
+		return -EOPNOTSUPP;
+
+	if (!BNXT_PF(bp)) {
+		NL_SET_ERR_MSG_MOD(extack,
+				   "flash update not supported from a VF");
+		return -EPERM;
+	}
+
+	return bnxt_flash_package_from_file(bp->dev, filename, 0);
+}
 
 static int bnxt_fw_reporter_diagnose(struct devlink_health_reporter *reporter,
 				     struct devlink_fmsg *fmsg,
@@ -225,6 +244,7 @@ static const struct devlink_ops bnxt_dl_ops = {
 	.eswitch_mode_set = bnxt_dl_eswitch_mode_set,
 	.eswitch_mode_get = bnxt_dl_eswitch_mode_get,
 #endif /* CONFIG_BNXT_SRIOV */
+	.flash_update	  = bnxt_dl_flash_update,
 };
 
 enum bnxt_dl_param_id {

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

@@ -2000,8 +2000,8 @@ static int bnxt_flash_firmware_from_file(struct net_device *dev,
 	return rc;
 }
 
-static int bnxt_flash_package_from_file(struct net_device *dev,
-					char *filename, u32 install_type)
+int bnxt_flash_package_from_file(struct net_device *dev, const char *filename,
+				 u32 install_type)
 {
 	struct bnxt *bp = netdev_priv(dev);
 	struct hwrm_nvm_install_update_output *resp = bp->hwrm_cmd_resp_addr;

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

@@ -81,6 +81,8 @@ extern const struct ethtool_ops bnxt_ethtool_ops;
 u32 _bnxt_fw_to_ethtool_adv_spds(u16, u8);
 u32 bnxt_fw_to_ethtool_speed(u16);
 u16 bnxt_get_fw_auto_link_speeds(u32);
+int bnxt_flash_package_from_file(struct net_device *dev, const char *filename,
+				 u32 install_type);
 void bnxt_ethtool_init(struct bnxt *bp);
 void bnxt_ethtool_free(struct bnxt *bp);