batman-adv/files/compat-hacks.h

   1 /* Please avoid adding hacks here - instead add it to mac80211/backports.git */
   2
   3 #undef CONFIG_MODULE_STRIPPED
   4
   5 #include <linux/version.h>      /* LINUX_VERSION_CODE */
   6 #include <linux/types.h>
   7
   8 #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 1, 0)
   9
  10 #define dev_get_iflink(_net_dev) ((_net_dev)->iflink)
  11
  12 #endif /* < KERNEL_VERSION(4, 1, 0) */
  13
  14 #if LINUX_VERSION_CODE < KERNEL_VERSION(3, 9, 0)
  15
  16 #include <linux/netdevice.h>
  17
  18 #define netdev_master_upper_dev_link(dev, upper_dev, upper_priv, upper_info) ({\
  19         BUILD_BUG_ON(upper_priv != NULL); \
  20         BUILD_BUG_ON(upper_info != NULL); \
  21         netdev_set_master(dev, upper_dev); \
  22 })
  23
  24 #elif LINUX_VERSION_CODE < KERNEL_VERSION(4, 5, 0)
  25
  26 #include <linux/netdevice.h>
  27
  28 #define netdev_master_upper_dev_link(dev, upper_dev, upper_priv, upper_info) ({\
  29         BUILD_BUG_ON(upper_priv != NULL); \
  30         BUILD_BUG_ON(upper_info != NULL); \
  31         netdev_master_upper_dev_link(dev, upper_dev); \
  32 })
  33
  34 #endif /* < KERNEL_VERSION(4, 5, 0) */
  35
  36 #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 2, 0)
  37
  38 struct sk_buff *skb_checksum_trimmed(struct sk_buff *skb,
  39                                      unsigned int transport_len,
  40                                      __sum16(*skb_chkf)(struct sk_buff *skb));
  41
  42 int ip_mc_check_igmp(struct sk_buff *skb, struct sk_buff **skb_trimmed);
  43
  44 int ipv6_mc_check_mld(struct sk_buff *skb, struct sk_buff **skb_trimmed);
  45
  46 #endif /* < KERNEL_VERSION(4, 2, 0) */
  47
  48 #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 3, 0)
  49
  50 #define IFF_NO_QUEUE    0; dev->tx_queue_len = 0
  51
  52 #endif /* < KERNEL_VERSION(4, 3, 0) */
  53
  54 #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 6, 0)
  55
  56 #include <linux/ethtool.h>
  57
  58 #define ethtool_link_ksettings batadv_ethtool_link_ksettings
  59
  60 struct batadv_ethtool_link_ksettings {
  61         struct {
  62                 __u32   speed;
  63                 __u8    duplex;
  64         } base;
  65 };
  66
  67 #define __ethtool_get_link_ksettings(__dev, __link_settings) \
  68         batadv_ethtool_get_link_ksettings(__dev, __link_settings)
  69
  70 static inline int
  71 batadv_ethtool_get_link_ksettings(struct net_device *dev,
  72                                   struct ethtool_link_ksettings *link_ksettings)
  73 {
  74         struct ethtool_cmd cmd;
  75         int ret;
  76
  77         memset(&cmd, 0, sizeof(cmd));
  78         ret = __ethtool_get_settings(dev, &cmd);
  79
  80         if (ret != 0)
  81                 return ret;
  82
  83         link_ksettings->base.duplex = cmd.duplex;
  84         link_ksettings->base.speed = ethtool_cmd_speed(&cmd);
  85
  86         return 0;
  87 }
  88
  89 #endif /* < KERNEL_VERSION(4, 6, 0) */
  90
  91 #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 7, 0)
  92
  93 #define netif_trans_update batadv_netif_trans_update
  94 static inline void batadv_netif_trans_update(struct net_device *dev)
  95 {
  96         dev->trans_start = jiffies;
  97 }
  98
  99 #endif /* < KERNEL_VERSION(4, 7, 0) */
 100
 101
 102 #include_next <linux/netlink.h>
 103
 104 #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 7, 0)
 105
 106 #include_next <net/netlink.h>
 107
 108 static inline bool batadv_nla_need_padding_for_64bit(struct sk_buff *skb);
 109
 110 static inline int batadv_nla_align_64bit(struct sk_buff *skb, int padattr)
 111 {
 112         if (batadv_nla_need_padding_for_64bit(skb) &&
 113             !nla_reserve(skb, padattr, 0))
 114                 return -EMSGSIZE;
 115
 116         return 0;
 117 }
 118
 119 static inline struct nlattr *batadv__nla_reserve_64bit(struct sk_buff *skb,
 120                                                        int attrtype,
 121                                                        int attrlen, int padattr)
 122 {
 123         if (batadv_nla_need_padding_for_64bit(skb))
 124                 batadv_nla_align_64bit(skb, padattr);
 125
 126         return __nla_reserve(skb, attrtype, attrlen);
 127 }
 128
 129 static inline void batadv__nla_put_64bit(struct sk_buff *skb, int attrtype,
 130                                          int attrlen, const void *data,
 131                                          int padattr)
 132 {
 133         struct nlattr *nla;
 134
 135         nla = batadv__nla_reserve_64bit(skb, attrtype, attrlen, padattr);
 136         memcpy(nla_data(nla), data, attrlen);
 137 }
 138
 139 static inline bool batadv_nla_need_padding_for_64bit(struct sk_buff *skb)
 140 {
 141 #ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
 142         /* The nlattr header is 4 bytes in size, that's why we test
 143          * if the skb->data _is_ aligned.  A NOP attribute, plus
 144          * nlattr header for next attribute, will make nla_data()
 145          * 8-byte aligned.
 146          */
 147         if (IS_ALIGNED((unsigned long)skb_tail_pointer(skb), 8))
 148                 return true;
 149 #endif
 150         return false;
 151 }
 152
 153 static inline int batadv_nla_total_size_64bit(int payload)
 154 {
 155         return NLA_ALIGN(nla_attr_size(payload))
 156 #ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
 157                 + NLA_ALIGN(nla_attr_size(0))
 158 #endif
 159                 ;
 160 }
 161
 162 static inline int batadv_nla_put_64bit(struct sk_buff *skb, int attrtype,
 163                                        int attrlen, const void *data,
 164                                        int padattr)
 165 {
 166         size_t len;
 167
 168         if (batadv_nla_need_padding_for_64bit(skb))
 169                 len = batadv_nla_total_size_64bit(attrlen);
 170         else
 171                 len = nla_total_size(attrlen);
 172         if (unlikely(skb_tailroom(skb) < len))
 173                 return -EMSGSIZE;
 174
 175         batadv__nla_put_64bit(skb, attrtype, attrlen, data, padattr);
 176         return 0;
 177 }
 178
 179 #define nla_put_u64_64bit(_skb, _attrtype, _value, _padattr) \
 180         batadv_nla_put_u64_64bit(_skb, _attrtype, _value, _padattr)
 181 static inline int batadv_nla_put_u64_64bit(struct sk_buff *skb, int attrtype,
 182                                            u64 value, int padattr)
 183 {
 184         return batadv_nla_put_64bit(skb, attrtype, sizeof(u64), &value,
 185                                     padattr);
 186 }
 187
 188 #endif /* < KERNEL_VERSION(4, 7, 0) */
 189