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[ipv6] Create routing table based on IPv6 settings

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Use the IPv6 settings to construct the routing table, in a matter
analogous to the construction of the IPv4 routing table.

This allows for manual assignment of IPv6 addresses via e.g.

  set net0/ip6 2001:ba8:0:1d4::6950:5845
  set net0/len6 64
  set net0/gateway6 fe80::226:bff:fedd:d3c0

The prefix length ("len6") may be omitted, in which case a default
prefix length of 64 will be assumed.

Multiple IPv6 addresses may be assigned manually by implicitly
creating child settings blocks.  For example:

  set net0/ip6 2001:ba8:0:1d4::6950:5845
  set net0.ula/ip6 fda4:2496:e992::6950:5845

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2016-07-19 17:49:50 +01:00
parent 4ad3c73b30
commit c34d1518eb
4 changed files with 142 additions and 195 deletions
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10
src/include/ipxe/ipv6.h
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@@ -25,6 +25,12 @@ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
/** IPv6 maximum hop limit */
#define IPV6_HOP_LIMIT 0xff
/** IPv6 default prefix length */
#define IPV6_DEFAULT_PREFIX_LEN 64
/** IPv6 maximum prefix length */
#define IPV6_MAX_PREFIX_LEN 128
/** IPv6 header */
struct ipv6_header {
/** Version (4 bits), Traffic class (8 bits), Flow label (20 bits) */
@@ -258,10 +264,6 @@ extern struct list_head ipv6_miniroutes;
extern struct net_protocol ipv6_protocol __net_protocol;
extern int ipv6_has_addr ( struct net_device *netdev, struct in6_addr *addr );
extern int ipv6_set_prefix ( struct net_device *netdev, struct in6_addr *prefix,
unsigned int prefix_len, struct in6_addr *router );
extern int ipv6_set_address ( struct net_device *netdev,
struct in6_addr *address );
extern int parse_ipv6_setting ( const struct setting_type *type,
const char *value, void *buf, size_t len );
extern int format_ipv6_setting ( const struct setting_type *type,