mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-22 18:32:14 +07:00
22a59be8b7
In the presence of firewalls which improperly block ICMP Unreachable
(including Fragmentation Required) messages, Path MTU Discovery is
prevented from working.
A workaround is to handle IPv4 payloads opaquely, ignoring the DF bit--as
is done for other payloads like AppleTalk--and doing transparent
fragmentation and reassembly.
Redux includes the enforcement of mutual exclusion between this feature
and Path MTU Discovery as suggested by Alexander Duyck.
Cc: Alexander Duyck <alexander.duyck@gmail.com>
Reviewed-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Philip Prindeville <philipp@redfish-solutions.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
137 lines
2.9 KiB
C
137 lines
2.9 KiB
C
#ifndef _UAPI_IF_TUNNEL_H_
|
|
#define _UAPI_IF_TUNNEL_H_
|
|
|
|
#include <linux/types.h>
|
|
#include <asm/byteorder.h>
|
|
|
|
|
|
#define SIOCGETTUNNEL (SIOCDEVPRIVATE + 0)
|
|
#define SIOCADDTUNNEL (SIOCDEVPRIVATE + 1)
|
|
#define SIOCDELTUNNEL (SIOCDEVPRIVATE + 2)
|
|
#define SIOCCHGTUNNEL (SIOCDEVPRIVATE + 3)
|
|
#define SIOCGETPRL (SIOCDEVPRIVATE + 4)
|
|
#define SIOCADDPRL (SIOCDEVPRIVATE + 5)
|
|
#define SIOCDELPRL (SIOCDEVPRIVATE + 6)
|
|
#define SIOCCHGPRL (SIOCDEVPRIVATE + 7)
|
|
#define SIOCGET6RD (SIOCDEVPRIVATE + 8)
|
|
#define SIOCADD6RD (SIOCDEVPRIVATE + 9)
|
|
#define SIOCDEL6RD (SIOCDEVPRIVATE + 10)
|
|
#define SIOCCHG6RD (SIOCDEVPRIVATE + 11)
|
|
|
|
#define GRE_CSUM __cpu_to_be16(0x8000)
|
|
#define GRE_ROUTING __cpu_to_be16(0x4000)
|
|
#define GRE_KEY __cpu_to_be16(0x2000)
|
|
#define GRE_SEQ __cpu_to_be16(0x1000)
|
|
#define GRE_STRICT __cpu_to_be16(0x0800)
|
|
#define GRE_REC __cpu_to_be16(0x0700)
|
|
#define GRE_FLAGS __cpu_to_be16(0x00F8)
|
|
#define GRE_VERSION __cpu_to_be16(0x0007)
|
|
|
|
struct ip_tunnel_parm {
|
|
char name[IFNAMSIZ];
|
|
int link;
|
|
__be16 i_flags;
|
|
__be16 o_flags;
|
|
__be32 i_key;
|
|
__be32 o_key;
|
|
struct iphdr iph;
|
|
};
|
|
|
|
enum {
|
|
IFLA_IPTUN_UNSPEC,
|
|
IFLA_IPTUN_LINK,
|
|
IFLA_IPTUN_LOCAL,
|
|
IFLA_IPTUN_REMOTE,
|
|
IFLA_IPTUN_TTL,
|
|
IFLA_IPTUN_TOS,
|
|
IFLA_IPTUN_ENCAP_LIMIT,
|
|
IFLA_IPTUN_FLOWINFO,
|
|
IFLA_IPTUN_FLAGS,
|
|
IFLA_IPTUN_PROTO,
|
|
IFLA_IPTUN_PMTUDISC,
|
|
IFLA_IPTUN_6RD_PREFIX,
|
|
IFLA_IPTUN_6RD_RELAY_PREFIX,
|
|
IFLA_IPTUN_6RD_PREFIXLEN,
|
|
IFLA_IPTUN_6RD_RELAY_PREFIXLEN,
|
|
IFLA_IPTUN_ENCAP_TYPE,
|
|
IFLA_IPTUN_ENCAP_FLAGS,
|
|
IFLA_IPTUN_ENCAP_SPORT,
|
|
IFLA_IPTUN_ENCAP_DPORT,
|
|
__IFLA_IPTUN_MAX,
|
|
};
|
|
#define IFLA_IPTUN_MAX (__IFLA_IPTUN_MAX - 1)
|
|
|
|
enum tunnel_encap_types {
|
|
TUNNEL_ENCAP_NONE,
|
|
TUNNEL_ENCAP_FOU,
|
|
TUNNEL_ENCAP_GUE,
|
|
};
|
|
|
|
#define TUNNEL_ENCAP_FLAG_CSUM (1<<0)
|
|
#define TUNNEL_ENCAP_FLAG_CSUM6 (1<<1)
|
|
#define TUNNEL_ENCAP_FLAG_REMCSUM (1<<2)
|
|
|
|
/* SIT-mode i_flags */
|
|
#define SIT_ISATAP 0x0001
|
|
|
|
struct ip_tunnel_prl {
|
|
__be32 addr;
|
|
__u16 flags;
|
|
__u16 __reserved;
|
|
__u32 datalen;
|
|
__u32 __reserved2;
|
|
/* data follows */
|
|
};
|
|
|
|
/* PRL flags */
|
|
#define PRL_DEFAULT 0x0001
|
|
|
|
struct ip_tunnel_6rd {
|
|
struct in6_addr prefix;
|
|
__be32 relay_prefix;
|
|
__u16 prefixlen;
|
|
__u16 relay_prefixlen;
|
|
};
|
|
|
|
enum {
|
|
IFLA_GRE_UNSPEC,
|
|
IFLA_GRE_LINK,
|
|
IFLA_GRE_IFLAGS,
|
|
IFLA_GRE_OFLAGS,
|
|
IFLA_GRE_IKEY,
|
|
IFLA_GRE_OKEY,
|
|
IFLA_GRE_LOCAL,
|
|
IFLA_GRE_REMOTE,
|
|
IFLA_GRE_TTL,
|
|
IFLA_GRE_TOS,
|
|
IFLA_GRE_PMTUDISC,
|
|
IFLA_GRE_ENCAP_LIMIT,
|
|
IFLA_GRE_FLOWINFO,
|
|
IFLA_GRE_FLAGS,
|
|
IFLA_GRE_ENCAP_TYPE,
|
|
IFLA_GRE_ENCAP_FLAGS,
|
|
IFLA_GRE_ENCAP_SPORT,
|
|
IFLA_GRE_ENCAP_DPORT,
|
|
IFLA_GRE_COLLECT_METADATA,
|
|
IFLA_GRE_IGNORE_DF,
|
|
__IFLA_GRE_MAX,
|
|
};
|
|
|
|
#define IFLA_GRE_MAX (__IFLA_GRE_MAX - 1)
|
|
|
|
/* VTI-mode i_flags */
|
|
#define VTI_ISVTI ((__force __be16)0x0001)
|
|
|
|
enum {
|
|
IFLA_VTI_UNSPEC,
|
|
IFLA_VTI_LINK,
|
|
IFLA_VTI_IKEY,
|
|
IFLA_VTI_OKEY,
|
|
IFLA_VTI_LOCAL,
|
|
IFLA_VTI_REMOTE,
|
|
__IFLA_VTI_MAX,
|
|
};
|
|
|
|
#define IFLA_VTI_MAX (__IFLA_VTI_MAX - 1)
|
|
#endif /* _UAPI_IF_TUNNEL_H_ */
|