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lib: EVPN prefix definition

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Extend the prefix data structure to allow for basic support for EVPN type-3
and type-2 routes.

Note: This may be revised in future.

Signed-off-by: Vivek Venkatraman <vivek@cumulusnetworks.com>
Reviewed-by:   Donald Sharp <sharpd@cumulusnetworks.com>

Ticket: CM-11937
Reviewed By: CCR-5001
Testing Done: None

Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
This commit is contained in:
vivek 2016-07-27 10:20:47 -07:00 committed by Philippe Guibert
parent 924bf71cd1
commit a440846ea6
1 changed files with 36 additions and 0 deletions
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36
lib/prefix.h
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@ -47,6 +47,39 @@ struct ethaddr {
} __packed;
/* length is the number of valuable bits of prefix structure
* 18 bytes is current length in structure, if address is ipv4
* 30 bytes is in case of ipv6
*/
#define PREFIX_LEN_ROUTE_TYPE_5_IPV4 (18*8)
#define PREFIX_LEN_ROUTE_TYPE_5_IPV6 (30*8)
/* EVPN address (RFC 7432) */
struct evpn_addr
{
u_char route_type;
u_char flags;
#define IP_ADDR_NONE 0x0
#define IP_ADDR_V4 0x1
#define IP_ADDR_V6 0x2
struct ethaddr mac;
uint32_t eth_tag;
u_char ip_prefix_length;
union
{
struct in_addr v4_addr;
struct in6_addr v6_addr;
} ip;
};
/* EVPN prefix structure. */
struct prefix_evpn
{
u_char family;
u_char prefixlen;
struct evpn_addr prefix __attribute__ ((aligned (8)));
};
/*
* A struct prefix contains an address family, a prefix length, and an
* address. This can represent either a 'network prefix' as defined
@ -83,6 +116,9 @@ struct prefix
struct ethaddr prefix_eth; /* AF_ETHERNET */
u_char val[8];
uintptr_t ptr;
#if defined(HAVE_EVPN)
struct evpn_addr prefix_evpn;
#endif
} u __attribute__ ((aligned (8)));
};