mirror of
https://github.com/openvswitch/ovs
synced 2025-10-19 14:37:21 +00:00
2d3ef70b74
IPv6 fragmentation functionality is not exported by most kernels, so backport this code from the upstream 4.3 development tree. Signed-off-by: Joe Stringer <joestringer@nicira.com> Acked-by: Pravin B Shelar <pshelar@nicira.com>
58 lines
1.5 KiB
C
58 lines
1.5 KiB
C
#ifndef __NET_IPV6_WRAPPER_H
|
|
#define __NET_IPV6_WRAPPER_H 1
|
|
|
|
#include <linux/version.h>
|
|
|
|
#include_next <net/ipv6.h>
|
|
|
|
#ifndef NEXTHDR_SCTP
|
|
#define NEXTHDR_SCTP 132 /* Stream Control Transport Protocol */
|
|
#endif
|
|
|
|
#if LINUX_VERSION_CODE < KERNEL_VERSION(3,3,0)
|
|
#define ipv6_skip_exthdr rpl_ipv6_skip_exthdr
|
|
extern int rpl_ipv6_skip_exthdr(const struct sk_buff *skb, int start,
|
|
u8 *nexthdrp, __be16 *frag_offp);
|
|
#endif
|
|
|
|
#ifndef HAVE_IP6_FH_F_SKIP_RH
|
|
|
|
enum {
|
|
IP6_FH_F_FRAG = (1 << 0),
|
|
IP6_FH_F_AUTH = (1 << 1),
|
|
IP6_FH_F_SKIP_RH = (1 << 2),
|
|
};
|
|
|
|
/* This function is upstream, but not the version which skips routing
|
|
* headers with 0 segments_left. We fixed it when we introduced
|
|
* IP6_FH_F_SKIP_RH.
|
|
*/
|
|
#define ipv6_find_hdr rpl_ipv6_find_hdr
|
|
extern int rpl_ipv6_find_hdr(const struct sk_buff *skb, unsigned int *offset,
|
|
int target, unsigned short *fragoff, int *fragflg);
|
|
#endif
|
|
|
|
#if LINUX_VERSION_CODE < KERNEL_VERSION(3,6,0)
|
|
static inline u32 ipv6_addr_hash(const struct in6_addr *a)
|
|
{
|
|
#if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && BITS_PER_LONG == 64
|
|
const unsigned long *ul = (const unsigned long *)a;
|
|
unsigned long x = ul[0] ^ ul[1];
|
|
|
|
return (u32)(x ^ (x >> 32));
|
|
#else
|
|
return (__force u32)(a->s6_addr32[0] ^ a->s6_addr32[1] ^
|
|
a->s6_addr32[2] ^ a->s6_addr32[3]);
|
|
#endif
|
|
}
|
|
#endif
|
|
|
|
#if defined(OVS_FRAGMENT_BACKPORT) && !defined(HAVE___IPV6_ADDR_JHASH)
|
|
static inline u32 __ipv6_addr_jhash(const struct in6_addr *a, const u32 unused)
|
|
{
|
|
return ipv6_addr_jhash(a);
|
|
}
|
|
#endif
|
|
|
|
#endif
|