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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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84e54fe0a5
The patch adds ERSPAN type II tunnel support. The implementation is based on the draft at [1]. One of the purposes is for Linux box to be able to receive ERSPAN monitoring traffic sent from the Cisco switch, by creating a ERSPAN tunnel device. In addition, the patch also adds ERSPAN TX, so Linux virtual switch can redirect monitored traffic to the ERSPAN tunnel device. The traffic will be encapsulated into ERSPAN and sent out. The implementation reuses tunnel key as ERSPAN session ID, and field 'erspan' as ERSPAN Index fields: ./ip link add dev ers11 type erspan seq key 100 erspan 123 \ local 172.16.1.200 remote 172.16.1.100 To use the above device as ERSPAN receiver, configure Nexus 5000 switch as below: monitor session 100 type erspan-source erspan-id 123 vrf default destination ip 172.16.1.200 source interface Ethernet1/11 both source interface Ethernet1/12 both no shut monitor erspan origin ip-address 172.16.1.100 global [1] https://tools.ietf.org/html/draft-foschiano-erspan-01 [2] iproute2 patch: http://marc.info/?l=linux-netdev&m=150306086924951&w=2 [3] test script: http://marc.info/?l=linux-netdev&m=150231021807304&w=2 Signed-off-by: William Tu <u9012063@gmail.com> Signed-off-by: Meenakshi Vohra <mvohra@vmware.com> Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
159 lines
3.5 KiB
C
159 lines
3.5 KiB
C
#ifndef _UAPI_IF_TUNNEL_H_
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#define _UAPI_IF_TUNNEL_H_
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#include <linux/types.h>
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#include <linux/if.h>
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#include <linux/ip.h>
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#include <linux/in6.h>
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#include <asm/byteorder.h>
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#define SIOCGETTUNNEL (SIOCDEVPRIVATE + 0)
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#define SIOCADDTUNNEL (SIOCDEVPRIVATE + 1)
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#define SIOCDELTUNNEL (SIOCDEVPRIVATE + 2)
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#define SIOCCHGTUNNEL (SIOCDEVPRIVATE + 3)
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#define SIOCGETPRL (SIOCDEVPRIVATE + 4)
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#define SIOCADDPRL (SIOCDEVPRIVATE + 5)
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#define SIOCDELPRL (SIOCDEVPRIVATE + 6)
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#define SIOCCHGPRL (SIOCDEVPRIVATE + 7)
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#define SIOCGET6RD (SIOCDEVPRIVATE + 8)
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#define SIOCADD6RD (SIOCDEVPRIVATE + 9)
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#define SIOCDEL6RD (SIOCDEVPRIVATE + 10)
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#define SIOCCHG6RD (SIOCDEVPRIVATE + 11)
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#define GRE_CSUM __cpu_to_be16(0x8000)
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#define GRE_ROUTING __cpu_to_be16(0x4000)
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#define GRE_KEY __cpu_to_be16(0x2000)
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#define GRE_SEQ __cpu_to_be16(0x1000)
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#define GRE_STRICT __cpu_to_be16(0x0800)
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#define GRE_REC __cpu_to_be16(0x0700)
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#define GRE_ACK __cpu_to_be16(0x0080)
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#define GRE_FLAGS __cpu_to_be16(0x0078)
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#define GRE_VERSION __cpu_to_be16(0x0007)
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#define GRE_IS_CSUM(f) ((f) & GRE_CSUM)
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#define GRE_IS_ROUTING(f) ((f) & GRE_ROUTING)
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#define GRE_IS_KEY(f) ((f) & GRE_KEY)
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#define GRE_IS_SEQ(f) ((f) & GRE_SEQ)
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#define GRE_IS_STRICT(f) ((f) & GRE_STRICT)
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#define GRE_IS_REC(f) ((f) & GRE_REC)
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#define GRE_IS_ACK(f) ((f) & GRE_ACK)
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#define GRE_VERSION_0 __cpu_to_be16(0x0000)
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#define GRE_VERSION_1 __cpu_to_be16(0x0001)
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#define GRE_PROTO_PPP __cpu_to_be16(0x880b)
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#define GRE_PPTP_KEY_MASK __cpu_to_be32(0xffff)
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struct ip_tunnel_parm {
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char name[IFNAMSIZ];
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int link;
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__be16 i_flags;
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__be16 o_flags;
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__be32 i_key;
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__be32 o_key;
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struct iphdr iph;
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};
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enum {
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IFLA_IPTUN_UNSPEC,
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IFLA_IPTUN_LINK,
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IFLA_IPTUN_LOCAL,
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IFLA_IPTUN_REMOTE,
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IFLA_IPTUN_TTL,
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IFLA_IPTUN_TOS,
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IFLA_IPTUN_ENCAP_LIMIT,
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IFLA_IPTUN_FLOWINFO,
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IFLA_IPTUN_FLAGS,
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IFLA_IPTUN_PROTO,
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IFLA_IPTUN_PMTUDISC,
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IFLA_IPTUN_6RD_PREFIX,
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IFLA_IPTUN_6RD_RELAY_PREFIX,
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IFLA_IPTUN_6RD_PREFIXLEN,
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IFLA_IPTUN_6RD_RELAY_PREFIXLEN,
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IFLA_IPTUN_ENCAP_TYPE,
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IFLA_IPTUN_ENCAP_FLAGS,
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IFLA_IPTUN_ENCAP_SPORT,
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IFLA_IPTUN_ENCAP_DPORT,
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IFLA_IPTUN_COLLECT_METADATA,
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IFLA_IPTUN_FWMARK,
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__IFLA_IPTUN_MAX,
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};
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#define IFLA_IPTUN_MAX (__IFLA_IPTUN_MAX - 1)
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enum tunnel_encap_types {
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TUNNEL_ENCAP_NONE,
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TUNNEL_ENCAP_FOU,
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TUNNEL_ENCAP_GUE,
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};
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#define TUNNEL_ENCAP_FLAG_CSUM (1<<0)
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#define TUNNEL_ENCAP_FLAG_CSUM6 (1<<1)
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#define TUNNEL_ENCAP_FLAG_REMCSUM (1<<2)
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/* SIT-mode i_flags */
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#define SIT_ISATAP 0x0001
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struct ip_tunnel_prl {
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__be32 addr;
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__u16 flags;
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__u16 __reserved;
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__u32 datalen;
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__u32 __reserved2;
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/* data follows */
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};
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/* PRL flags */
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#define PRL_DEFAULT 0x0001
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struct ip_tunnel_6rd {
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struct in6_addr prefix;
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__be32 relay_prefix;
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__u16 prefixlen;
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__u16 relay_prefixlen;
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};
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enum {
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IFLA_GRE_UNSPEC,
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IFLA_GRE_LINK,
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IFLA_GRE_IFLAGS,
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IFLA_GRE_OFLAGS,
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IFLA_GRE_IKEY,
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IFLA_GRE_OKEY,
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IFLA_GRE_LOCAL,
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IFLA_GRE_REMOTE,
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IFLA_GRE_TTL,
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IFLA_GRE_TOS,
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IFLA_GRE_PMTUDISC,
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IFLA_GRE_ENCAP_LIMIT,
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IFLA_GRE_FLOWINFO,
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IFLA_GRE_FLAGS,
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IFLA_GRE_ENCAP_TYPE,
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IFLA_GRE_ENCAP_FLAGS,
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IFLA_GRE_ENCAP_SPORT,
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IFLA_GRE_ENCAP_DPORT,
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IFLA_GRE_COLLECT_METADATA,
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IFLA_GRE_IGNORE_DF,
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IFLA_GRE_FWMARK,
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IFLA_GRE_ERSPAN_INDEX,
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__IFLA_GRE_MAX,
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};
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#define IFLA_GRE_MAX (__IFLA_GRE_MAX - 1)
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/* VTI-mode i_flags */
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#define VTI_ISVTI ((__force __be16)0x0001)
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enum {
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IFLA_VTI_UNSPEC,
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IFLA_VTI_LINK,
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IFLA_VTI_IKEY,
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IFLA_VTI_OKEY,
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IFLA_VTI_LOCAL,
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IFLA_VTI_REMOTE,
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IFLA_VTI_FWMARK,
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__IFLA_VTI_MAX,
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};
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#define IFLA_VTI_MAX (__IFLA_VTI_MAX - 1)
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#endif /* _UAPI_IF_TUNNEL_H_ */
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