9dd45970d7256a28787655b646a0030f01a8e9e3
1 /* Please avoid adding hacks here - instead add it to mac80211/backports.git */
3 #undef CONFIG_MODULE_STRIPPED
5 #include <linux/version.h> /* LINUX_VERSION_CODE */
6 #include <linux/types.h>
8 #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 15, 0)
10 #include <linux/netdevice.h>
12 #define netdev_master_upper_dev_link(dev, upper_dev, upper_priv, upper_info, extack) ({\
13 BUILD_BUG_ON(extack != NULL); \
14 netdev_master_upper_dev_link(dev, upper_dev, upper_priv, upper_info); \
17 #endif /* < KERNEL_VERSION(4, 15, 0) */
20 #if LINUX_VERSION_CODE < KERNEL_VERSION(5, 1, 0)
22 #include_next <linux/igmp.h>
23 #include_next <net/addrconf.h>
25 static inline int batadv_ipv6_mc_check_mld1(struct sk_buff
*skb
)
27 return ipv6_mc_check_mld(skb
, NULL
);
30 static inline int batadv_ipv6_mc_check_mld2(struct sk_buff
*skb
,
31 struct sk_buff
**skb_trimmed
)
33 return ipv6_mc_check_mld(skb
, skb_trimmed
);
36 #define ipv6_mc_check_mld_get(_1, _2, ipv6_mc_check_mld_name, ...) ipv6_mc_check_mld_name
37 #define ipv6_mc_check_mld(...) \
38 ipv6_mc_check_mld_get(__VA_ARGS__, batadv_ipv6_mc_check_mld2, batadv_ipv6_mc_check_mld1)(__VA_ARGS__)
40 static inline int batadv_ip_mc_check_igmp1(struct sk_buff
*skb
)
42 return ip_mc_check_igmp(skb
, NULL
);
45 static inline int batadv_ip_mc_check_igmp2(struct sk_buff
*skb
,
46 struct sk_buff
**skb_trimmed
)
48 return ip_mc_check_igmp(skb
, skb_trimmed
);
51 #define ip_mc_check_igmp_get(_1, _2, ip_mc_check_igmp_name, ...) ip_mc_check_igmp_name
52 #define ip_mc_check_igmp(...) \
53 ip_mc_check_igmp_get(__VA_ARGS__, batadv_ip_mc_check_igmp2, batadv_ip_mc_check_igmp1)(__VA_ARGS__)
55 #endif /* < KERNEL_VERSION(5, 1, 0) */
58 #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 10, 0)
60 #include_next <linux/cache.h>
62 /* hack for netlink.c which marked the family ops as ro */
63 #ifdef __ro_after_init
64 #undef __ro_after_init
66 #define __ro_after_init
68 #endif /* < KERNEL_VERSION(4, 10, 0) */
70 #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 11, 9)
72 #include <linux/netdevice.h>
74 /* work around missing attribute needs_free_netdev and priv_destructor in
77 #define ether_setup(dev) \
78 void batadv_softif_free2(struct net_device *dev) \
80 batadv_softif_free(dev); \
83 void (*t1)(struct net_device *dev) __attribute__((unused)); \
84 bool t2 __attribute__((unused)); \
86 #define needs_free_netdev destructor = batadv_softif_free2; t2
87 #define priv_destructor destructor = batadv_softif_free2; t1
89 #endif /* < KERNEL_VERSION(4, 11, 9) */
92 #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 15, 0)
94 #define batadv_softif_slave_add(__dev, __slave_dev, __extack) \
95 batadv_softif_slave_add(__dev, __slave_dev)
97 #endif /* < KERNEL_VERSION(4, 15, 0) */
100 #if LINUX_VERSION_CODE < KERNEL_VERSION(5, 0, 0)
102 static inline int batadv_access_ok(int type
, const void __user
*p
,
105 return access_ok(type
, p
, size
);
112 #define access_ok_get(_1, _2, _3 , access_ok_name, ...) access_ok_name
113 #define access_ok(...) \
114 access_ok_get(__VA_ARGS__, access_ok3, access_ok2)(__VA_ARGS__)
116 #define access_ok2(addr, size) batadv_access_ok(VERIFY_WRITE, (addr), (size))
117 #define access_ok3(type, addr, size) batadv_access_ok((type), (addr), (size))
119 #endif /* < KERNEL_VERSION(5, 0, 0) */
123 #include <linux/version.h>
124 #include_next <linux/average.h>
126 #include <linux/bug.h>
130 #endif /* DECLARE_EWMA */
133 * Exponentially weighted moving average (EWMA)
135 * This implements a fixed-precision EWMA algorithm, with both the
136 * precision and fall-off coefficient determined at compile-time
137 * and built into the generated helper funtions.
139 * The first argument to the macro is the name that will be used
140 * for the struct and helper functions.
142 * The second argument, the precision, expresses how many bits are
143 * used for the fractional part of the fixed-precision values.
145 * The third argument, the weight reciprocal, determines how the
146 * new values will be weighed vs. the old state, new values will
147 * get weight 1/weight_rcp and old values 1-1/weight_rcp. Note
148 * that this parameter must be a power of two for efficiency.
151 #define DECLARE_EWMA(name, _precision, _weight_rcp) \
152 struct ewma_##name { \
153 unsigned long internal; \
155 static inline void ewma_##name##_init(struct ewma_##name *e) \
157 BUILD_BUG_ON(!__builtin_constant_p(_precision)); \
158 BUILD_BUG_ON(!__builtin_constant_p(_weight_rcp)); \
160 * Even if you want to feed it just 0/1 you should have \
161 * some bits for the non-fractional part... \
163 BUILD_BUG_ON((_precision) > 30); \
164 BUILD_BUG_ON_NOT_POWER_OF_2(_weight_rcp); \
167 static inline unsigned long \
168 ewma_##name##_read(struct ewma_##name *e) \
170 BUILD_BUG_ON(!__builtin_constant_p(_precision)); \
171 BUILD_BUG_ON(!__builtin_constant_p(_weight_rcp)); \
172 BUILD_BUG_ON((_precision) > 30); \
173 BUILD_BUG_ON_NOT_POWER_OF_2(_weight_rcp); \
174 return e->internal >> (_precision); \
176 static inline void ewma_##name##_add(struct ewma_##name *e, \
179 unsigned long internal = READ_ONCE(e->internal); \
180 unsigned long weight_rcp = ilog2(_weight_rcp); \
181 unsigned long precision = _precision; \
183 BUILD_BUG_ON(!__builtin_constant_p(_precision)); \
184 BUILD_BUG_ON(!__builtin_constant_p(_weight_rcp)); \
185 BUILD_BUG_ON((_precision) > 30); \
186 BUILD_BUG_ON_NOT_POWER_OF_2(_weight_rcp); \
188 WRITE_ONCE(e->internal, internal ? \
189 (((internal << weight_rcp) - internal) + \
190 (val << precision)) >> weight_rcp : \
191 (val << precision)); \
194 /* </DECLARE_EWMA> */