datapath/linux/compat/include/linux/netdevice.h

   1 #ifndef __LINUX_NETDEVICE_WRAPPER_H
   2 #define __LINUX_NETDEVICE_WRAPPER_H 1
   3
   4 #include_next <linux/netdevice.h>
   5 #include <linux/if_bridge.h>
   6
   7 struct net;
   8
   9 #include <linux/version.h>
  10
  11 #ifndef IFF_TX_SKB_SHARING
  12 #define IFF_TX_SKB_SHARING 0
  13 #endif
  14
  15 #ifndef IFF_OVS_DATAPATH
  16 #define IFF_OVS_DATAPATH 0
  17 #else
  18 #define HAVE_OVS_DATAPATH
  19 #endif
  20
  21 #ifndef IFF_LIVE_ADDR_CHANGE
  22 #define IFF_LIVE_ADDR_CHANGE 0
  23 #endif
  24
  25 #ifndef IFF_NO_QUEUE
  26 #define IFF_NO_QUEUE    0
  27 #endif
  28 #ifndef IFF_OPENVSWITCH
  29 #define IFF_OPENVSWITCH 0
  30 #endif
  31
  32 #ifndef to_net_dev
  33 #define to_net_dev(class) container_of(class, struct net_device, NETDEV_DEV_MEMBER)
  34 #endif
  35
  36 #ifndef HAVE_NET_NAME_UNKNOWN
  37 #undef alloc_netdev
  38 #define NET_NAME_UNKNOWN 0
  39 #define alloc_netdev(sizeof_priv, name, name_assign_type, setup) \
  40         alloc_netdev_mq(sizeof_priv, name, setup, 1)
  41 #endif
  42
  43 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,33)
  44 #define unregister_netdevice_queue(dev, head)   unregister_netdevice(dev)
  45 #define unregister_netdevice_many(head)
  46 #endif
  47
  48 #ifndef HAVE_DEV_DISABLE_LRO
  49 extern void dev_disable_lro(struct net_device *dev);
  50 #endif
  51
  52 #ifndef HAVE_DEV_GET_BY_INDEX_RCU
  53 static inline struct net_device *dev_get_by_index_rcu(struct net *net, int ifindex)
  54 {
  55         struct net_device *dev;
  56
  57         read_lock(&dev_base_lock);
  58         dev = __dev_get_by_index(net, ifindex);
  59         read_unlock(&dev_base_lock);
  60
  61         return dev;
  62 }
  63 #endif
  64
  65 #ifndef NETIF_F_FSO
  66 #define NETIF_F_FSO 0
  67 #endif
  68
  69 #ifndef HAVE_NETDEV_FEATURES_T
  70 typedef u32 netdev_features_t;
  71 #endif
  72
  73 #if LINUX_VERSION_CODE < KERNEL_VERSION(3,19,0)
  74 #define OVS_USE_COMPAT_GSO_SEGMENTATION
  75 #endif
  76
  77 #ifdef OVS_USE_COMPAT_GSO_SEGMENTATION
  78 /* define compat version to handle MPLS segmentation offload. */
  79 #define __skb_gso_segment rpl__skb_gso_segment
  80 struct sk_buff *rpl__skb_gso_segment(struct sk_buff *skb,
  81                                     netdev_features_t features,
  82                                     bool tx_path);
  83
  84 #define skb_gso_segment rpl_skb_gso_segment
  85 static inline
  86 struct sk_buff *rpl_skb_gso_segment(struct sk_buff *skb, netdev_features_t features)
  87 {
  88         return rpl__skb_gso_segment(skb, features, true);
  89 }
  90 #endif
  91
  92 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,38)
  93 #define netif_skb_features rpl_netif_skb_features
  94 netdev_features_t rpl_netif_skb_features(struct sk_buff *skb);
  95 #endif
  96
  97 #ifdef HAVE_NETIF_NEEDS_GSO_NETDEV
  98 #define netif_needs_gso rpl_netif_needs_gso
  99 static inline bool netif_needs_gso(struct sk_buff *skb,
 100                                    netdev_features_t features)
 101 {
 102         return skb_is_gso(skb) && (!skb_gso_ok(skb, features) ||
 103                 unlikely((skb->ip_summed != CHECKSUM_PARTIAL) &&
 104                          (skb->ip_summed != CHECKSUM_UNNECESSARY)));
 105 }
 106 #endif
 107
 108 #if LINUX_VERSION_CODE < KERNEL_VERSION(3,9,0)
 109
 110 /* XEN dom0 networking assumes dev->master is bond device
 111  * and it tries to access bond private structure from dev->master
 112  * ptr on receive path. This causes panic. Therefore it is better
 113  * not to backport this API.
 114  **/
 115 static inline int netdev_master_upper_dev_link(struct net_device *dev,
 116                                                struct net_device *upper_dev)
 117 {
 118         return 0;
 119 }
 120
 121 static inline void netdev_upper_dev_unlink(struct net_device *dev,
 122                                            struct net_device *upper_dev)
 123 {
 124 }
 125
 126 static inline struct net_device *netdev_master_upper_dev_get(struct net_device *dev)
 127 {
 128         return NULL;
 129 }
 130 #endif
 131
 132 #if LINUX_VERSION_CODE < KERNEL_VERSION(3,16,0)
 133 #define dev_queue_xmit rpl_dev_queue_xmit
 134 int rpl_dev_queue_xmit(struct sk_buff *skb);
 135 #endif
 136
 137 #if LINUX_VERSION_CODE < KERNEL_VERSION(3,11,0)
 138 static inline struct net_device *netdev_notifier_info_to_dev(void *info)
 139 {
 140         return info;
 141 }
 142 #endif
 143
 144 #ifndef HAVE_PCPU_SW_NETSTATS
 145 #define pcpu_sw_netstats pcpu_tstats
 146 #endif
 147
 148 #if RHEL_RELEASE_CODE < RHEL_RELEASE_VERSION(8,0)
 149 /* Use compat version for all redhas releases */
 150 #undef netdev_alloc_pcpu_stats
 151 #endif
 152
 153 #ifndef netdev_alloc_pcpu_stats
 154 #define netdev_alloc_pcpu_stats(type)                           \
 155 ({                                                              \
 156         typeof(type) __percpu *pcpu_stats = alloc_percpu(type); \
 157         if (pcpu_stats) {                                       \
 158                 int ____i;                                      \
 159                 for_each_possible_cpu(____i) {                  \
 160                         typeof(type) *stat;                     \
 161                         stat = per_cpu_ptr(pcpu_stats, ____i);  \
 162                         u64_stats_init(&stat->syncp);           \
 163                 }                                               \
 164         }                                                       \
 165         pcpu_stats;                                             \
 166 })
 167 #endif
 168
 169 #ifndef HAVE_DEV_RECURSION_LEVEL
 170 static inline bool dev_recursion_level(void) { return false; }
 171 #endif
 172
 173 #ifndef NET_NAME_USER
 174 #define NET_NAME_USER 3
 175 #endif
 176
 177 #ifndef HAVE_GRO_REMCSUM
 178 struct gro_remcsum {
 179 };
 180
 181 #define skb_gro_remcsum_init(grc)
 182 #define skb_gro_remcsum_cleanup(a1, a2)
 183 #else
 184 #if LINUX_VERSION_CODE < KERNEL_VERSION(4,3,0)
 185
 186 #define skb_gro_remcsum_process rpl_skb_gro_remcsum_process
 187 static inline void *skb_gro_remcsum_process(struct sk_buff *skb, void *ptr,
 188                                             unsigned int off, size_t hdrlen,
 189                                             int start, int offset,
 190                                             struct gro_remcsum *grc,
 191                                             bool nopartial)
 192 {
 193         __wsum delta;
 194         size_t plen = hdrlen + max_t(size_t, offset + sizeof(u16), start);
 195
 196         BUG_ON(!NAPI_GRO_CB(skb)->csum_valid);
 197
 198         if (!nopartial) {
 199                 NAPI_GRO_CB(skb)->gro_remcsum_start = off + hdrlen + start;
 200                 return ptr;
 201         }
 202
 203         ptr = skb_gro_header_fast(skb, off);
 204         if (skb_gro_header_hard(skb, off + plen)) {
 205                 ptr = skb_gro_header_slow(skb, off + plen, off);
 206                 if (!ptr)
 207                         return NULL;
 208         }
 209
 210         delta = remcsum_adjust(ptr + hdrlen, NAPI_GRO_CB(skb)->csum,
 211                                start, offset);
 212
 213         /* Adjust skb->csum since we changed the packet */
 214         NAPI_GRO_CB(skb)->csum = csum_add(NAPI_GRO_CB(skb)->csum, delta);
 215
 216         grc->offset = off + hdrlen + offset;
 217         grc->delta = delta;
 218
 219         return ptr;
 220 }
 221 #endif
 222 #endif
 223
 224 #ifndef HAVE_RTNL_LINK_STATS64
 225 #define dev_get_stats rpl_dev_get_stats
 226 struct rtnl_link_stats64 *rpl_dev_get_stats(struct net_device *dev,
 227                                         struct rtnl_link_stats64 *storage);
 228 #endif
 229
 230 #if RHEL_RELEASE_CODE < RHEL_RELEASE_VERSION(7,0)
 231 /* Only required on RHEL 6. */
 232 #define dev_get_stats dev_get_stats64
 233 #endif
 234
 235 #ifndef netdev_dbg
 236 #define netdev_dbg(__dev, format, args...)                      \
 237 do {                                                            \
 238         printk(KERN_DEBUG "%s ", __dev->name);                  \
 239         printk(KERN_DEBUG format, ##args);                      \
 240 } while (0)
 241 #endif
 242
 243 #ifndef netdev_info
 244 #define netdev_info(__dev, format, args...)                     \
 245 do {                                                            \
 246         printk(KERN_INFO "%s ", __dev->name);                   \
 247         printk(KERN_INFO format, ##args);                       \
 248 } while (0)
 249
 250 #endif
 251
 252 #ifndef USE_UPSTREAM_TUNNEL
 253 #define dev_fill_metadata_dst ovs_dev_fill_metadata_dst
 254 int ovs_dev_fill_metadata_dst(struct net_device *dev, struct sk_buff *skb);
 255 #endif
 256
 257 #ifndef NETDEV_OFFLOAD_PUSH_VXLAN
 258 #define NETDEV_OFFLOAD_PUSH_VXLAN       0x001C
 259 #endif
 260
 261 #ifndef NETDEV_OFFLOAD_PUSH_GENEVE
 262 #define NETDEV_OFFLOAD_PUSH_GENEVE      0x001D
 263 #endif
 264
 265 #ifndef HAVE_IFF_PHONY_HEADROOM
 266
 267 #define IFF_PHONY_HEADROOM 0
 268 static inline unsigned netdev_get_fwd_headroom(struct net_device *dev)
 269 {
 270         return 0;
 271 }
 272
 273 static inline void netdev_set_rx_headroom(struct net_device *dev, int new_hr)
 274 {
 275 }
 276
 277 /* set the device rx headroom to the dev's default */
 278 static inline void netdev_reset_rx_headroom(struct net_device *dev)
 279 {
 280 }
 281
 282 #endif
 283
 284 #ifdef IFF_NO_QUEUE
 285 #define HAVE_IFF_NO_QUEUE
 286 #else
 287 #define IFF_NO_QUEUE 0
 288 #endif
 289
 290 #endif /* __LINUX_NETDEVICE_WRAPPER_H */