diff options
Diffstat (limited to 'include/net/addrconf.h')
| -rw-r--r-- | include/net/addrconf.h | 35 |
1 files changed, 33 insertions, 2 deletions
diff --git a/include/net/addrconf.h b/include/net/addrconf.h index def59d3a3..b5474b1fc 100644 --- a/include/net/addrconf.h +++ b/include/net/addrconf.h @@ -91,6 +91,37 @@ int ipv6_rcv_saddr_equal(const struct sock *sk, const struct sock *sk2); void addrconf_join_solict(struct net_device *dev, const struct in6_addr *addr); void addrconf_leave_solict(struct inet6_dev *idev, const struct in6_addr *addr); +static inline int addrconf_ifid_eui48(u8 *eui, struct net_device *dev) +{ + if (dev->addr_len != ETH_ALEN) + return -1; + memcpy(eui, dev->dev_addr, 3); + memcpy(eui + 5, dev->dev_addr + 3, 3); + + /* + * The zSeries OSA network cards can be shared among various + * OS instances, but the OSA cards have only one MAC address. + * This leads to duplicate address conflicts in conjunction + * with IPv6 if more than one instance uses the same card. + * + * The driver for these cards can deliver a unique 16-bit + * identifier for each instance sharing the same card. It is + * placed instead of 0xFFFE in the interface identifier. The + * "u" bit of the interface identifier is not inverted in this + * case. Hence the resulting interface identifier has local + * scope according to RFC2373. + */ + if (dev->dev_id) { + eui[3] = (dev->dev_id >> 8) & 0xFF; + eui[4] = dev->dev_id & 0xFF; + } else { + eui[3] = 0xFF; + eui[4] = 0xFE; + eui[0] ^= 2; + } + return 0; +} + static inline unsigned long addrconf_timeout_fixup(u32 timeout, unsigned int unit) { @@ -158,8 +189,8 @@ struct ipv6_stub { const struct in6_addr *addr); int (*ipv6_sock_mc_drop)(struct sock *sk, int ifindex, const struct in6_addr *addr); - int (*ipv6_dst_lookup)(struct sock *sk, struct dst_entry **dst, - struct flowi6 *fl6); + int (*ipv6_dst_lookup)(struct net *net, struct sock *sk, + struct dst_entry **dst, struct flowi6 *fl6); void (*udpv6_encap_enable)(void); void (*ndisc_send_na)(struct net_device *dev, struct neighbour *neigh, const struct in6_addr *daddr, |