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[ipv6] Add ndp_tx_router_solicitation() to send router solicitations

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Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2013-10-24 14:06:33 +01:00
parent 10d19bd2ac
commit b15dbc9cc6
5 changed files with 95 additions and 37 deletions
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3
src/include/ipxe/icmpv6.h
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@@ -46,6 +46,9 @@ struct icmpv6_handler {
/** ICMPv6 echo reply */
#define ICMPV6_ECHO_REPLY 129
/** ICMPv6 router solicitation */
#define ICMPV6_ROUTER_SOLICITATION 133
/** ICMPv6 router advertisement */
#define ICMPV6_ROUTER_ADVERTISEMENT 134

16
src/include/ipxe/ipv6.h
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@@ -194,14 +194,13 @@ static inline int ipv6_eui64 ( struct in6_addr *addr,
/**
* Construct link-local address via EUI-64
*
* @v addr Address to construct
* @v addr Zeroed address to construct
* @v netdev Network device
* @ret prefix_len Prefix length, or negative error
*/
static inline int ipv6_link_local ( struct in6_addr *addr,
struct net_device *netdev ) {
memset ( addr, 0, sizeof ( *addr ) );
addr->s6_addr16[0] = htons ( 0xfe80 );
return ipv6_eui64 ( addr, netdev );
}
@@ -209,19 +208,28 @@ static inline int ipv6_link_local ( struct in6_addr *addr,
/**
* Construct solicited-node multicast address
*
* @v addr Address to construct
* @v addr Zeroed address to construct
* @v unicast Unicast address
*/
static inline void ipv6_solicited_node ( struct in6_addr *addr,
const struct in6_addr *unicast ) {
memset ( addr, 0, sizeof ( *addr ) );
addr->s6_addr16[0] = htons ( 0xff02 );
addr->s6_addr[11] = 1;
addr->s6_addr[12] = 0xff;
memcpy ( &addr->s6_addr[13], &unicast->s6_addr[13], 3 );
}
/**
* Construct all-routers multicast address
*
* @v addr Zeroed address to construct
*/
static inline void ipv6_all_routers ( struct in6_addr *addr ) {
addr->s6_addr16[0] = htons ( 0xff02 );
addr->s6_addr[15] = 2;
}
extern struct list_head ipv6_miniroutes;
extern struct net_protocol ipv6_protocol __net_protocol;

14
src/include/ipxe/ndp.h
View File

@@ -124,12 +124,24 @@ struct ndp_router_advertisement_header {
/** NDP other configuration */
#define NDP_ROUTER_OTHER 0x40
/** An NDP router solicitation header */
struct ndp_router_solicitation_header {
/** ICMPv6 header */
struct icmp_header icmp;
/** Reserved */
uint32_t reserved;
/** Options */
union ndp_option option[0];
} __attribute__ (( packed ));
/** An NDP header */
union ndp_header {
/** ICMPv6 header */
struct icmp_header icmp;
/** Neighbour solicitation or advertisement header */
struct ndp_neighbour_header neigh;
/** Router solicitation header */
struct ndp_router_solicitation_header rsol;
/** Router advertisement header */
struct ndp_router_advertisement_header radv;
} __attribute__ (( packed ));
@@ -154,4 +166,6 @@ static inline int ndp_tx ( struct io_buffer *iobuf, struct net_device *netdev,
&ndp_discovery, net_source, ll_source );
}
extern int ndp_tx_router_solicitation ( struct net_device *netdev );
#endif /* _IPXE_NDP_H */