1 // SPDX-License-Identifier: GPL-2.0+ 2 /* Copyright (c) 2022 Amarula Solutions, Dario Binacchi <dario.binacchi@amarulasolutions.com> 3 * 4 */ 5 6 #include <linux/can/dev.h> 7 #include <linux/ethtool.h> 8 #include <linux/kernel.h> 9 #include <linux/netdevice.h> 10 #include <linux/platform_device.h> 11 12 #include "slcan.h" 13 14 static const char slcan_priv_flags_strings[][ETH_GSTRING_LEN] = { 15 #define SLCAN_PRIV_FLAGS_ERR_RST_ON_OPEN BIT(0) 16 "err-rst-on-open", 17 }; 18 19 static void slcan_get_strings(struct net_device *ndev, u32 stringset, u8 *data) 20 { 21 switch (stringset) { 22 case ETH_SS_PRIV_FLAGS: 23 memcpy(data, slcan_priv_flags_strings, 24 sizeof(slcan_priv_flags_strings)); 25 } 26 } 27 28 static u32 slcan_get_priv_flags(struct net_device *ndev) 29 { 30 u32 flags = 0; 31 32 if (slcan_err_rst_on_open(ndev)) 33 flags |= SLCAN_PRIV_FLAGS_ERR_RST_ON_OPEN; 34 35 return flags; 36 } 37 38 static int slcan_set_priv_flags(struct net_device *ndev, u32 flags) 39 { 40 bool err_rst_op_open = !!(flags & SLCAN_PRIV_FLAGS_ERR_RST_ON_OPEN); 41 42 return slcan_enable_err_rst_on_open(ndev, err_rst_op_open); 43 } 44 45 static int slcan_get_sset_count(struct net_device *netdev, int sset) 46 { 47 switch (sset) { 48 case ETH_SS_PRIV_FLAGS: 49 return ARRAY_SIZE(slcan_priv_flags_strings); 50 default: 51 return -EOPNOTSUPP; 52 } 53 } 54 55 const struct ethtool_ops slcan_ethtool_ops = { 56 .get_strings = slcan_get_strings, 57 .get_priv_flags = slcan_get_priv_flags, 58 .set_priv_flags = slcan_set_priv_flags, 59 .get_sset_count = slcan_get_sset_count, 60 .get_ts_info = ethtool_op_get_ts_info, 61 }; 62