From: Sven Eckelmann Date: Tue, 17 Jul 2018 18:59:22 +0000 (+0200) Subject: batman-adv: Drop manual installation of compat-hacks.h X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=643e41c9d661835fa5314aa95e00f7748e4760da;p=feed%2Frouting.git batman-adv: Drop manual installation of compat-hacks.h OpenWrt is able since a while to automatically install all files in ./src/ to the PKG_BUILD_DIR. It is no longer necessary to provide special Build/Prepare rules to do so. Signed-off-by: Sven Eckelmann --- diff --git a/batman-adv/Makefile b/batman-adv/Makefile index a665b5d..8e00931 100644 --- a/batman-adv/Makefile +++ b/batman-adv/Makefile @@ -85,11 +85,6 @@ define Build/Compile modules endef -define Build/Prepare - $(call Build/Prepare/Default) - $(CP) ./files/compat-hacks.h $(PKG_BUILD_DIR)/ -endef - define Build/Clean rm -rf $(BUILD_DIR)/$(PKG_NAME)/ endef diff --git a/batman-adv/files/compat-hacks.h b/batman-adv/files/compat-hacks.h deleted file mode 100644 index 4511184..0000000 --- a/batman-adv/files/compat-hacks.h +++ /dev/null @@ -1,424 +0,0 @@ -/* Please avoid adding hacks here - instead add it to mac80211/backports.git */ - -#undef CONFIG_MODULE_STRIPPED - -#include /* LINUX_VERSION_CODE */ -#include - -#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 1, 0) - -#define dev_get_iflink(_net_dev) ((_net_dev)->iflink) - -#endif /* < KERNEL_VERSION(4, 1, 0) */ - -#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 5, 0) - -#include - -#define netdev_master_upper_dev_link(dev, upper_dev, upper_priv, upper_info, extack) ({\ - BUILD_BUG_ON(upper_priv != NULL); \ - BUILD_BUG_ON(upper_info != NULL); \ - BUILD_BUG_ON(extack != NULL); \ - netdev_master_upper_dev_link(dev, upper_dev); \ -}) - -#elif LINUX_VERSION_CODE < KERNEL_VERSION(4, 15, 0) - -#include - -#define netdev_master_upper_dev_link(dev, upper_dev, upper_priv, upper_info, extack) ({\ - BUILD_BUG_ON(extack != NULL); \ - netdev_master_upper_dev_link(dev, upper_dev, upper_priv, upper_info); \ -}) - -#endif /* < KERNEL_VERSION(4, 5, 0) */ - - -#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 0, 0) - -/* for batadv_v_elp_get_throughput which would have used - * STATION_INFO_EXPECTED_THROUGHPUT in Linux 4.0.0 - */ -#define NL80211_STA_INFO_EXPECTED_THROUGHPUT 28 - -/* wild hack for batadv_getlink_net only */ -#define get_link_net get_xstats_size || 1 ? fallback_net : (struct net*)netdev->rtnl_link_ops->get_xstats_size - -#endif /* < KERNEL_VERSION(4, 0, 0) */ - - -#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 2, 0) - -struct sk_buff *skb_checksum_trimmed(struct sk_buff *skb, - unsigned int transport_len, - __sum16(*skb_chkf)(struct sk_buff *skb)); - -int ip_mc_check_igmp(struct sk_buff *skb, struct sk_buff **skb_trimmed); - -int ipv6_mc_check_mld(struct sk_buff *skb, struct sk_buff **skb_trimmed); - -#endif /* < KERNEL_VERSION(4, 2, 0) */ - -#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 3, 0) - -#define IFF_NO_QUEUE 0; dev->tx_queue_len = 0 - -static inline bool hlist_fake(struct hlist_node *h) -{ - return h->pprev == &h->next; -} - -#endif /* < KERNEL_VERSION(4, 3, 0) */ - -#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 6, 0) - -#include - -#define ethtool_link_ksettings batadv_ethtool_link_ksettings - -struct batadv_ethtool_link_ksettings { - struct { - __u32 speed; - __u8 duplex; - __u8 autoneg; - } 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); - link_ksettings->base.autoneg = cmd.autoneg; - - return 0; -} - -#endif /* < KERNEL_VERSION(4, 6, 0) */ - -#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 7, 0) - -#ifdef netif_trans_update -#undef netif_trans_update -#endif - -#define netif_trans_update batadv_netif_trans_update -static inline void batadv_netif_trans_update(struct net_device *dev) -{ - dev->trans_start = jiffies; -} - -#endif /* < KERNEL_VERSION(4, 7, 0) */ - - -#include_next - -#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 7, 0) - -#include_next - -static inline bool batadv_nla_need_padding_for_64bit(struct sk_buff *skb); - -static inline int batadv_nla_align_64bit(struct sk_buff *skb, int padattr) -{ - if (batadv_nla_need_padding_for_64bit(skb) && - !nla_reserve(skb, padattr, 0)) - return -EMSGSIZE; - - return 0; -} - -static inline struct nlattr *batadv__nla_reserve_64bit(struct sk_buff *skb, - int attrtype, - int attrlen, int padattr) -{ - if (batadv_nla_need_padding_for_64bit(skb)) - batadv_nla_align_64bit(skb, padattr); - - return __nla_reserve(skb, attrtype, attrlen); -} - -static inline void batadv__nla_put_64bit(struct sk_buff *skb, int attrtype, - int attrlen, const void *data, - int padattr) -{ - struct nlattr *nla; - - nla = batadv__nla_reserve_64bit(skb, attrtype, attrlen, padattr); - memcpy(nla_data(nla), data, attrlen); -} - -static inline bool batadv_nla_need_padding_for_64bit(struct sk_buff *skb) -{ -#ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS - /* The nlattr header is 4 bytes in size, that's why we test - * if the skb->data _is_ aligned. A NOP attribute, plus - * nlattr header for next attribute, will make nla_data() - * 8-byte aligned. - */ - if (IS_ALIGNED((unsigned long)skb_tail_pointer(skb), 8)) - return true; -#endif - return false; -} - -static inline int batadv_nla_total_size_64bit(int payload) -{ - return NLA_ALIGN(nla_attr_size(payload)) -#ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS - + NLA_ALIGN(nla_attr_size(0)) -#endif - ; -} - -static inline int batadv_nla_put_64bit(struct sk_buff *skb, int attrtype, - int attrlen, const void *data, - int padattr) -{ - size_t len; - - if (batadv_nla_need_padding_for_64bit(skb)) - len = batadv_nla_total_size_64bit(attrlen); - else - len = nla_total_size(attrlen); - if (unlikely(skb_tailroom(skb) < len)) - return -EMSGSIZE; - - batadv__nla_put_64bit(skb, attrtype, attrlen, data, padattr); - return 0; -} - -#ifdef nla_put_u64_64bit -#undef nla_put_u64_64bit -#endif - -#define nla_put_u64_64bit(_skb, _attrtype, _value, _padattr) \ - batadv_nla_put_u64_64bit(_skb, _attrtype, _value, _padattr) -static inline int batadv_nla_put_u64_64bit(struct sk_buff *skb, int attrtype, - u64 value, int padattr) -{ - return batadv_nla_put_64bit(skb, attrtype, sizeof(u64), &value, - padattr); -} - -#endif /* < KERNEL_VERSION(4, 7, 0) */ - - -#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 10, 0) - -#include_next - -/* hack for netlink.c which marked the family ops as ro */ -#ifdef __ro_after_init -#undef __ro_after_init -#endif -#define __ro_after_init - -#endif /* < KERNEL_VERSION(4, 10, 0) */ - -#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 11, 9) - -#include - -/* work around missing attribute needs_free_netdev and priv_destructor in - * net_device - */ -#define ether_setup(dev) \ - void batadv_softif_free2(struct net_device *dev) \ - { \ - batadv_softif_free(dev); \ - free_netdev(dev); \ - } \ - void (*t1)(struct net_device *dev) __attribute__((unused)); \ - bool t2 __attribute__((unused)); \ - ether_setup(dev) -#define needs_free_netdev destructor = batadv_softif_free2; t2 -#define priv_destructor destructor = batadv_softif_free2; t1 - -#endif /* < KERNEL_VERSION(4, 11, 9) */ - -#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 13, 0) - -static inline void *batadv_skb_put(struct sk_buff *skb, unsigned int len) -{ - return (void *)skb_put(skb, len); -} -#ifdef skb_put -#undef skb_put -#endif - -#define skb_put batadv_skb_put - -static inline void *batadv_skb_put_zero(struct sk_buff *skb, unsigned int len) -{ - void *tmp = skb_put(skb, len); - - memset(tmp, 0, len); - - return tmp; -} -#ifdef skb_put_zero -#undef skb_put_zero -#endif - -#define skb_put_zero batadv_skb_put_zero - -static inline void *batadv_skb_put_data(struct sk_buff *skb, const void *data, - unsigned int len) -{ - void *tmp = skb_put(skb, len); - - memcpy(tmp, data, len); - - return tmp; -} -#ifdef skb_put_data -#undef skb_put_data -#endif - -#define skb_put_data batadv_skb_put_data - -#endif /* < KERNEL_VERSION(4, 13, 0) */ - -#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 15, 0) - -#define batadv_softif_slave_add(__dev, __slave_dev, __extack) \ - batadv_softif_slave_add(__dev, __slave_dev) - -#endif /* < KERNEL_VERSION(4, 15, 0) */ - -#ifndef from_timer - -#define TIMER_DATA_TYPE unsigned long -#define TIMER_FUNC_TYPE void (*)(TIMER_DATA_TYPE) - -static inline void timer_setup(struct timer_list *timer, - void (*callback)(struct timer_list *), - unsigned int flags) -{ - __setup_timer(timer, (TIMER_FUNC_TYPE)callback, - (TIMER_DATA_TYPE)timer, flags); -} - -#define from_timer(var, callback_timer, timer_fieldname) \ - container_of(callback_timer, typeof(*var), timer_fieldname) - -#endif /* !from_timer */ - -#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 16, 0) - - -#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 18, 0) - -#include - -/* cfg80211 fix: https://patchwork.kernel.org/patch/10449857/ */ -static inline int batadv_cfg80211_get_station(struct net_device *dev, - const u8 *mac_addr, - struct station_info *sinfo) -{ - memset(sinfo, 0, sizeof(*sinfo)); - return cfg80211_get_station(dev, mac_addr, sinfo); -} - -#define cfg80211_get_station(dev, mac_addr, sinfo) \ - batadv_cfg80211_get_station(dev, mac_addr, sinfo) - -#endif /* < KERNEL_VERSION(4, 18, 0) */ - - -#ifdef __CHECK_POLL -typedef unsigned __bitwise __poll_t; -#else -typedef unsigned __poll_t; -#endif - -#endif /* < KERNEL_VERSION(4, 16, 0) */ - -/* */ - -#include -#include_next - -#include - -#ifdef DECLARE_EWMA -#undef DECLARE_EWMA -#endif /* DECLARE_EWMA */ - -/* - * Exponentially weighted moving average (EWMA) - * - * This implements a fixed-precision EWMA algorithm, with both the - * precision and fall-off coefficient determined at compile-time - * and built into the generated helper funtions. - * - * The first argument to the macro is the name that will be used - * for the struct and helper functions. - * - * The second argument, the precision, expresses how many bits are - * used for the fractional part of the fixed-precision values. - * - * The third argument, the weight reciprocal, determines how the - * new values will be weighed vs. the old state, new values will - * get weight 1/weight_rcp and old values 1-1/weight_rcp. Note - * that this parameter must be a power of two for efficiency. - */ - -#define DECLARE_EWMA(name, _precision, _weight_rcp) \ - struct ewma_##name { \ - unsigned long internal; \ - }; \ - static inline void ewma_##name##_init(struct ewma_##name *e) \ - { \ - BUILD_BUG_ON(!__builtin_constant_p(_precision)); \ - BUILD_BUG_ON(!__builtin_constant_p(_weight_rcp)); \ - /* \ - * Even if you want to feed it just 0/1 you should have \ - * some bits for the non-fractional part... \ - */ \ - BUILD_BUG_ON((_precision) > 30); \ - BUILD_BUG_ON_NOT_POWER_OF_2(_weight_rcp); \ - e->internal = 0; \ - } \ - static inline unsigned long \ - ewma_##name##_read(struct ewma_##name *e) \ - { \ - BUILD_BUG_ON(!__builtin_constant_p(_precision)); \ - BUILD_BUG_ON(!__builtin_constant_p(_weight_rcp)); \ - BUILD_BUG_ON((_precision) > 30); \ - BUILD_BUG_ON_NOT_POWER_OF_2(_weight_rcp); \ - return e->internal >> (_precision); \ - } \ - static inline void ewma_##name##_add(struct ewma_##name *e, \ - unsigned long val) \ - { \ - unsigned long internal = READ_ONCE(e->internal); \ - unsigned long weight_rcp = ilog2(_weight_rcp); \ - unsigned long precision = _precision; \ - \ - BUILD_BUG_ON(!__builtin_constant_p(_precision)); \ - BUILD_BUG_ON(!__builtin_constant_p(_weight_rcp)); \ - BUILD_BUG_ON((_precision) > 30); \ - BUILD_BUG_ON_NOT_POWER_OF_2(_weight_rcp); \ - \ - WRITE_ONCE(e->internal, internal ? \ - (((internal << weight_rcp) - internal) + \ - (val << precision)) >> weight_rcp : \ - (val << precision)); \ - } - -/* */ diff --git a/batman-adv/src/compat-hacks.h b/batman-adv/src/compat-hacks.h new file mode 100644 index 0000000..4511184 --- /dev/null +++ b/batman-adv/src/compat-hacks.h @@ -0,0 +1,424 @@ +/* Please avoid adding hacks here - instead add it to mac80211/backports.git */ + +#undef CONFIG_MODULE_STRIPPED + +#include /* LINUX_VERSION_CODE */ +#include + +#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 1, 0) + +#define dev_get_iflink(_net_dev) ((_net_dev)->iflink) + +#endif /* < KERNEL_VERSION(4, 1, 0) */ + +#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 5, 0) + +#include + +#define netdev_master_upper_dev_link(dev, upper_dev, upper_priv, upper_info, extack) ({\ + BUILD_BUG_ON(upper_priv != NULL); \ + BUILD_BUG_ON(upper_info != NULL); \ + BUILD_BUG_ON(extack != NULL); \ + netdev_master_upper_dev_link(dev, upper_dev); \ +}) + +#elif LINUX_VERSION_CODE < KERNEL_VERSION(4, 15, 0) + +#include + +#define netdev_master_upper_dev_link(dev, upper_dev, upper_priv, upper_info, extack) ({\ + BUILD_BUG_ON(extack != NULL); \ + netdev_master_upper_dev_link(dev, upper_dev, upper_priv, upper_info); \ +}) + +#endif /* < KERNEL_VERSION(4, 5, 0) */ + + +#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 0, 0) + +/* for batadv_v_elp_get_throughput which would have used + * STATION_INFO_EXPECTED_THROUGHPUT in Linux 4.0.0 + */ +#define NL80211_STA_INFO_EXPECTED_THROUGHPUT 28 + +/* wild hack for batadv_getlink_net only */ +#define get_link_net get_xstats_size || 1 ? fallback_net : (struct net*)netdev->rtnl_link_ops->get_xstats_size + +#endif /* < KERNEL_VERSION(4, 0, 0) */ + + +#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 2, 0) + +struct sk_buff *skb_checksum_trimmed(struct sk_buff *skb, + unsigned int transport_len, + __sum16(*skb_chkf)(struct sk_buff *skb)); + +int ip_mc_check_igmp(struct sk_buff *skb, struct sk_buff **skb_trimmed); + +int ipv6_mc_check_mld(struct sk_buff *skb, struct sk_buff **skb_trimmed); + +#endif /* < KERNEL_VERSION(4, 2, 0) */ + +#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 3, 0) + +#define IFF_NO_QUEUE 0; dev->tx_queue_len = 0 + +static inline bool hlist_fake(struct hlist_node *h) +{ + return h->pprev == &h->next; +} + +#endif /* < KERNEL_VERSION(4, 3, 0) */ + +#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 6, 0) + +#include + +#define ethtool_link_ksettings batadv_ethtool_link_ksettings + +struct batadv_ethtool_link_ksettings { + struct { + __u32 speed; + __u8 duplex; + __u8 autoneg; + } 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); + link_ksettings->base.autoneg = cmd.autoneg; + + return 0; +} + +#endif /* < KERNEL_VERSION(4, 6, 0) */ + +#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 7, 0) + +#ifdef netif_trans_update +#undef netif_trans_update +#endif + +#define netif_trans_update batadv_netif_trans_update +static inline void batadv_netif_trans_update(struct net_device *dev) +{ + dev->trans_start = jiffies; +} + +#endif /* < KERNEL_VERSION(4, 7, 0) */ + + +#include_next + +#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 7, 0) + +#include_next + +static inline bool batadv_nla_need_padding_for_64bit(struct sk_buff *skb); + +static inline int batadv_nla_align_64bit(struct sk_buff *skb, int padattr) +{ + if (batadv_nla_need_padding_for_64bit(skb) && + !nla_reserve(skb, padattr, 0)) + return -EMSGSIZE; + + return 0; +} + +static inline struct nlattr *batadv__nla_reserve_64bit(struct sk_buff *skb, + int attrtype, + int attrlen, int padattr) +{ + if (batadv_nla_need_padding_for_64bit(skb)) + batadv_nla_align_64bit(skb, padattr); + + return __nla_reserve(skb, attrtype, attrlen); +} + +static inline void batadv__nla_put_64bit(struct sk_buff *skb, int attrtype, + int attrlen, const void *data, + int padattr) +{ + struct nlattr *nla; + + nla = batadv__nla_reserve_64bit(skb, attrtype, attrlen, padattr); + memcpy(nla_data(nla), data, attrlen); +} + +static inline bool batadv_nla_need_padding_for_64bit(struct sk_buff *skb) +{ +#ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS + /* The nlattr header is 4 bytes in size, that's why we test + * if the skb->data _is_ aligned. A NOP attribute, plus + * nlattr header for next attribute, will make nla_data() + * 8-byte aligned. + */ + if (IS_ALIGNED((unsigned long)skb_tail_pointer(skb), 8)) + return true; +#endif + return false; +} + +static inline int batadv_nla_total_size_64bit(int payload) +{ + return NLA_ALIGN(nla_attr_size(payload)) +#ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS + + NLA_ALIGN(nla_attr_size(0)) +#endif + ; +} + +static inline int batadv_nla_put_64bit(struct sk_buff *skb, int attrtype, + int attrlen, const void *data, + int padattr) +{ + size_t len; + + if (batadv_nla_need_padding_for_64bit(skb)) + len = batadv_nla_total_size_64bit(attrlen); + else + len = nla_total_size(attrlen); + if (unlikely(skb_tailroom(skb) < len)) + return -EMSGSIZE; + + batadv__nla_put_64bit(skb, attrtype, attrlen, data, padattr); + return 0; +} + +#ifdef nla_put_u64_64bit +#undef nla_put_u64_64bit +#endif + +#define nla_put_u64_64bit(_skb, _attrtype, _value, _padattr) \ + batadv_nla_put_u64_64bit(_skb, _attrtype, _value, _padattr) +static inline int batadv_nla_put_u64_64bit(struct sk_buff *skb, int attrtype, + u64 value, int padattr) +{ + return batadv_nla_put_64bit(skb, attrtype, sizeof(u64), &value, + padattr); +} + +#endif /* < KERNEL_VERSION(4, 7, 0) */ + + +#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 10, 0) + +#include_next + +/* hack for netlink.c which marked the family ops as ro */ +#ifdef __ro_after_init +#undef __ro_after_init +#endif +#define __ro_after_init + +#endif /* < KERNEL_VERSION(4, 10, 0) */ + +#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 11, 9) + +#include + +/* work around missing attribute needs_free_netdev and priv_destructor in + * net_device + */ +#define ether_setup(dev) \ + void batadv_softif_free2(struct net_device *dev) \ + { \ + batadv_softif_free(dev); \ + free_netdev(dev); \ + } \ + void (*t1)(struct net_device *dev) __attribute__((unused)); \ + bool t2 __attribute__((unused)); \ + ether_setup(dev) +#define needs_free_netdev destructor = batadv_softif_free2; t2 +#define priv_destructor destructor = batadv_softif_free2; t1 + +#endif /* < KERNEL_VERSION(4, 11, 9) */ + +#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 13, 0) + +static inline void *batadv_skb_put(struct sk_buff *skb, unsigned int len) +{ + return (void *)skb_put(skb, len); +} +#ifdef skb_put +#undef skb_put +#endif + +#define skb_put batadv_skb_put + +static inline void *batadv_skb_put_zero(struct sk_buff *skb, unsigned int len) +{ + void *tmp = skb_put(skb, len); + + memset(tmp, 0, len); + + return tmp; +} +#ifdef skb_put_zero +#undef skb_put_zero +#endif + +#define skb_put_zero batadv_skb_put_zero + +static inline void *batadv_skb_put_data(struct sk_buff *skb, const void *data, + unsigned int len) +{ + void *tmp = skb_put(skb, len); + + memcpy(tmp, data, len); + + return tmp; +} +#ifdef skb_put_data +#undef skb_put_data +#endif + +#define skb_put_data batadv_skb_put_data + +#endif /* < KERNEL_VERSION(4, 13, 0) */ + +#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 15, 0) + +#define batadv_softif_slave_add(__dev, __slave_dev, __extack) \ + batadv_softif_slave_add(__dev, __slave_dev) + +#endif /* < KERNEL_VERSION(4, 15, 0) */ + +#ifndef from_timer + +#define TIMER_DATA_TYPE unsigned long +#define TIMER_FUNC_TYPE void (*)(TIMER_DATA_TYPE) + +static inline void timer_setup(struct timer_list *timer, + void (*callback)(struct timer_list *), + unsigned int flags) +{ + __setup_timer(timer, (TIMER_FUNC_TYPE)callback, + (TIMER_DATA_TYPE)timer, flags); +} + +#define from_timer(var, callback_timer, timer_fieldname) \ + container_of(callback_timer, typeof(*var), timer_fieldname) + +#endif /* !from_timer */ + +#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 16, 0) + + +#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 18, 0) + +#include + +/* cfg80211 fix: https://patchwork.kernel.org/patch/10449857/ */ +static inline int batadv_cfg80211_get_station(struct net_device *dev, + const u8 *mac_addr, + struct station_info *sinfo) +{ + memset(sinfo, 0, sizeof(*sinfo)); + return cfg80211_get_station(dev, mac_addr, sinfo); +} + +#define cfg80211_get_station(dev, mac_addr, sinfo) \ + batadv_cfg80211_get_station(dev, mac_addr, sinfo) + +#endif /* < KERNEL_VERSION(4, 18, 0) */ + + +#ifdef __CHECK_POLL +typedef unsigned __bitwise __poll_t; +#else +typedef unsigned __poll_t; +#endif + +#endif /* < KERNEL_VERSION(4, 16, 0) */ + +/* */ + +#include +#include_next + +#include + +#ifdef DECLARE_EWMA +#undef DECLARE_EWMA +#endif /* DECLARE_EWMA */ + +/* + * Exponentially weighted moving average (EWMA) + * + * This implements a fixed-precision EWMA algorithm, with both the + * precision and fall-off coefficient determined at compile-time + * and built into the generated helper funtions. + * + * The first argument to the macro is the name that will be used + * for the struct and helper functions. + * + * The second argument, the precision, expresses how many bits are + * used for the fractional part of the fixed-precision values. + * + * The third argument, the weight reciprocal, determines how the + * new values will be weighed vs. the old state, new values will + * get weight 1/weight_rcp and old values 1-1/weight_rcp. Note + * that this parameter must be a power of two for efficiency. + */ + +#define DECLARE_EWMA(name, _precision, _weight_rcp) \ + struct ewma_##name { \ + unsigned long internal; \ + }; \ + static inline void ewma_##name##_init(struct ewma_##name *e) \ + { \ + BUILD_BUG_ON(!__builtin_constant_p(_precision)); \ + BUILD_BUG_ON(!__builtin_constant_p(_weight_rcp)); \ + /* \ + * Even if you want to feed it just 0/1 you should have \ + * some bits for the non-fractional part... \ + */ \ + BUILD_BUG_ON((_precision) > 30); \ + BUILD_BUG_ON_NOT_POWER_OF_2(_weight_rcp); \ + e->internal = 0; \ + } \ + static inline unsigned long \ + ewma_##name##_read(struct ewma_##name *e) \ + { \ + BUILD_BUG_ON(!__builtin_constant_p(_precision)); \ + BUILD_BUG_ON(!__builtin_constant_p(_weight_rcp)); \ + BUILD_BUG_ON((_precision) > 30); \ + BUILD_BUG_ON_NOT_POWER_OF_2(_weight_rcp); \ + return e->internal >> (_precision); \ + } \ + static inline void ewma_##name##_add(struct ewma_##name *e, \ + unsigned long val) \ + { \ + unsigned long internal = READ_ONCE(e->internal); \ + unsigned long weight_rcp = ilog2(_weight_rcp); \ + unsigned long precision = _precision; \ + \ + BUILD_BUG_ON(!__builtin_constant_p(_precision)); \ + BUILD_BUG_ON(!__builtin_constant_p(_weight_rcp)); \ + BUILD_BUG_ON((_precision) > 30); \ + BUILD_BUG_ON_NOT_POWER_OF_2(_weight_rcp); \ + \ + WRITE_ONCE(e->internal, internal ? \ + (((internal << weight_rcp) - internal) + \ + (val << precision)) >> weight_rcp : \ + (val << precision)); \ + } + +/* */