datapath/linux/compat/include/net/route.h

   1 #ifndef __NET_ROUTE_H_WRAPPER
   2 #define __NET_ROUTE_H_WRAPPER
   3
   4 #include_next <net/route.h>
   5
   6 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,39)
   7 struct flowi_common {
   8         int     flowic_oif;
   9         __u32   flowic_mark;
  10         __u8    flowic_tos;
  11         __u8    flowic_proto;
  12 };
  13
  14 union flowi_uli {
  15         struct {
  16                 __be16  dport;
  17                 __be16  sport;
  18         } ports;
  19
  20         struct {
  21                 __u8    type;
  22                 __u8    code;
  23         } icmpt;
  24
  25         struct {
  26                 __le16  dport;
  27                 __le16  sport;
  28         } dnports;
  29
  30         __be32          spi;
  31         __be32          gre_key;
  32
  33         struct {
  34                 __u8    type;
  35         } mht;
  36 };
  37
  38 struct flowi4 {
  39         struct flowi_common     __fl_common;
  40 #define flowi4_oif              __fl_common.flowic_oif
  41 #define flowi4_iif              __fl_common.flowic_iif
  42 #define flowi4_mark             __fl_common.flowic_mark
  43 #define flowi4_tos              __fl_common.flowic_tos
  44 #define flowi4_scope            __fl_common.flowic_scope
  45 #define flowi4_proto            __fl_common.flowic_proto
  46 #define flowi4_flags            __fl_common.flowic_flags
  47 #define flowi4_secid            __fl_common.flowic_secid
  48 #define flowi4_tun_key          __fl_common.flowic_tun_key
  49
  50         union flowi_uli         uli;
  51 #define fl4_gre_key             uli.gre_key
  52
  53         /* (saddr,daddr) must be grouped, same order as in IP header */
  54         __be32                  saddr;
  55         __be32                  daddr;
  56
  57 } __attribute__((__aligned__(BITS_PER_LONG/8)));
  58
  59 struct flowi6 {
  60         struct flowi_common     __fl_common;
  61 #define flowi6_oif              __fl_common.flowic_oif
  62 #define flowi6_iif              __fl_common.flowic_iif
  63 #define flowi6_mark             __fl_common.flowic_mark
  64 #define flowi6_tos              __fl_common.flowic_tos
  65 #define flowi6_scope            __fl_common.flowic_scope
  66 #define flowi6_proto            __fl_common.flowic_proto
  67 #define flowi6_flags            __fl_common.flowic_flags
  68 #define flowi6_secid            __fl_common.flowic_secid
  69 #define flowi6_tun_key          __fl_common.flowic_tun_key
  70         struct in6_addr         daddr;
  71         struct in6_addr         saddr;
  72         __be32                  flowlabel;
  73         union flowi_uli         uli;
  74 #define fl6_sport               uli.ports.sport
  75 #define fl6_dport               uli.ports.dport
  76 #define fl6_icmp_type           uli.icmpt.type
  77 #define fl6_icmp_code           uli.icmpt.code
  78 #define fl6_ipsec_spi           uli.spi
  79 #define fl6_mh_type             uli.mht.type
  80 #define fl6_gre_key             uli.gre_key
  81 } __attribute__((__aligned__(BITS_PER_LONG/8)));
  82
  83 static inline struct rtable *rpl_ip_route_output_key(struct net *net, struct flowi4 *flp)
  84 {
  85         struct rtable *rt;
  86         /* Tunnel configuration keeps DSCP part of TOS bits, But Linux
  87          * router expect RT_TOS bits only.
  88          */
  89
  90         struct flowi fl = { .nl_u = { .ip4_u = {
  91                                         .daddr = flp->daddr,
  92                                         .saddr = flp->saddr,
  93                                         .tos   = RT_TOS(flp->flowi4_tos) } },
  94                                         .mark = flp->flowi4_mark,
  95                                         .proto = flp->flowi4_proto };
  96
  97         if (unlikely(ip_route_output_key(net, &rt, &fl)))
  98                 return ERR_PTR(-EADDRNOTAVAIL);
  99         flp->saddr = fl.nl_u.ip4_u.saddr;
 100         return rt;
 101 }
 102 #define ip_route_output_key rpl_ip_route_output_key
 103
 104 static inline int ip4_dst_hoplimit(const struct dst_entry *dst)
 105 {
 106         return dst_metric(dst, RTAX_HOPLIMIT);
 107 }
 108 #endif
 109 #endif