/* Please avoid adding hacks here - instead add it to mac80211/backports.git */
+#undef CONFIG_MODULE_STRIPPED
+
#include <linux/version.h> /* LINUX_VERSION_CODE */
#include <linux/types.h>
#endif /* < KERNEL_VERSION(4, 1, 0) */
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 16, 0)
+
+/* Linux 3.15 misses the uapi include.... */
+#include <uapi/linux/nl80211.h>
+
+#endif /* < KERNEL_VERSION(3, 16, 0) */
+
#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 9, 0)
#include <linux/netdevice.h>
#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)
}
#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 <linux/netlink.h>
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 7, 0)
+
+#include_next <net/netlink.h>
+
+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 <linux/cache.h>
+
+/* 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 <linux/netdevice.h>
+
+/* 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) */
+
+/* <DECLARE_EWMA> */
+
+#include <linux/version.h>
+#include_next <linux/average.h>
+
+#include <linux/bug.h>
+
+#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 = ACCESS_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); \
+ \
+ ACCESS_ONCE(e->internal) = internal ? \
+ (((internal << weight_rcp) - internal) + \
+ (val << precision)) >> weight_rcp : \
+ (val << precision); \
+ }
+
+/* </DECLARE_EWMA> */
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