From: Antonio Quartulli a@unstable.cc

The ethtool API is changing in linux-4.6 and the B.A.T.M.A.N. V code has to be changed accordingly.

Fixes: 5c3245172c01 ("batman-adv: ELP - compute the metric based on the estimated throughput") Signed-off-by: Antonio Quartulli a@unstable.cc [sven@narfation.org: Added compat code for __ethtool_get_link_ksettings] Signed-off-by: Sven Eckelmann sven@narfation.org --- resend of "RFC v2" as patch with my Signed-off-by added

compat-include/linux/ethtool.h | 62 ++++++++++++++++++++++++++++++++++++++++++ net/batman-adv/bat_v_elp.c | 12 ++++---- 2 files changed, 68 insertions(+), 6 deletions(-) create mode 100644 compat-include/linux/ethtool.h

diff --git a/compat-include/linux/ethtool.h b/compat-include/linux/ethtool.h new file mode 100644 index 0000000..87f7577 --- /dev/null +++ b/compat-include/linux/ethtool.h @@ -0,0 +1,62 @@ +/* Copyright (C) 2016 B.A.T.M.A.N. contributors: + * + * Antonio Quartulli + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2 of the GNU General Public + * License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see http://www.gnu.org/licenses/. + * + * This file contains macros for maintaining compatibility with older versions + * of the Linux kernel. + */ + +#ifndef _NET_BATMAN_ADV_COMPAT_LINUX_ETHTOOL_H_ +#define _NET_BATMAN_ADV_COMPAT_LINUX_ETHTOOL_H_ + +#include <linux/version.h> +#include_next <linux/ethtool.h> + +#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 6, 0) + +#define ethtool_link_ksettings batadv_ethtool_link_ksettings + +struct batadv_ethtool_link_ksettings { + struct { + __u32 speed; + __u8 duplex; + } base; +}; + +#define __ethtool_get_link_ksettings(__dev, __link_settings) \ + batadv_ethtool_get_link_ksettings(__dev, __link_settings) + +static inline int +batadv_ethtool_get_link_ksettings(struct net_device *dev, + struct ethtool_link_ksettings *link_ksettings) +{ + struct ethtool_cmd cmd; + int ret; + + memset(&cmd, 0, sizeof(cmd)); + ret = __ethtool_get_settings(dev, &cmd); + + if (ret != 0) + return ret; + + link_ksettings->base.duplex = cmd.duplex; + link_ksettings->base.speed = ethtool_cmd_speed(&cmd); + + return 0; +} + +#endif /* < KERNEL_VERSION(4, 6, 0) */ + +#endif /* _NET_BATMAN_ADV_COMPAT_LINUX_ETHTOOL_H_ */ diff --git a/net/batman-adv/bat_v_elp.c b/net/batman-adv/bat_v_elp.c index e94b4a0..3844e7e 100644 --- a/net/batman-adv/bat_v_elp.c +++ b/net/batman-adv/bat_v_elp.c @@ -73,8 +73,8 @@ static void batadv_v_elp_start_timer(struct batadv_hard_iface *hard_iface) static u32 batadv_v_elp_get_throughput(struct batadv_hardif_neigh_node *neigh) { struct batadv_hard_iface *hard_iface = neigh->if_incoming; + struct ethtool_link_ksettings link_settings; struct station_info sinfo; - struct ethtool_cmd cmd; u32 throughput; int ret;

@@ -110,19 +110,19 @@ static u32 batadv_v_elp_get_throughput(struct batadv_hardif_neigh_node *neigh) /* if not a wifi interface, check if this device provides data via * ethtool (e.g. an Ethernet adapter) */ - memset(&cmd, 0, sizeof(cmd)); + memset(&link_settings, 0, sizeof(link_settings)); rtnl_lock(); - ret = __ethtool_get_settings(hard_iface->net_dev, &cmd); + ret = __ethtool_get_link_ksettings(hard_iface->net_dev, &link_settings); rtnl_unlock(); if (ret == 0) { /* link characteristics might change over time */ - if (cmd.duplex == DUPLEX_FULL) + if (link_settings.base.duplex == DUPLEX_FULL) hard_iface->bat_v.flags |= BATADV_FULL_DUPLEX; else hard_iface->bat_v.flags &= ~BATADV_FULL_DUPLEX;

- throughput = ethtool_cmd_speed(&cmd); - if (throughput && throughput != SPEED_UNKNOWN) + throughput = link_settings.base.speed; + if (throughput && (throughput != SPEED_UNKNOWN)) return throughput * 10; }