[IPV6]: Add ifindex field to ND user option messages.
Userland neighbor discovery options are typically heavily involved with
the interface on which thay are received: add a missing ifindex field to
the original struct. Thanks to Rémi Denis-Courmont.
Signed-off-by: Pierre Ynard <linkfanel@yahoo.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/rtnetlink.h b/include/linux/rtnetlink.h
index 5bf6182..4e81836 100644
--- a/include/linux/rtnetlink.h
+++ b/include/linux/rtnetlink.h
@@ -491,9 +491,11 @@
unsigned char nduseropt_family;
unsigned char nduseropt_pad1;
unsigned short nduseropt_opts_len; /* Total length of options */
+ int nduseropt_ifindex;
__u8 nduseropt_icmp_type;
__u8 nduseropt_icmp_code;
unsigned short nduseropt_pad2;
+ unsigned int nduseropt_pad3;
/* Followed by one or more ND options */
};
diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c
index 36f7dbf..67997a7 100644
--- a/net/ipv6/ndisc.c
+++ b/net/ipv6/ndisc.c
@@ -1037,6 +1037,7 @@
ndmsg = nlmsg_data(nlh);
ndmsg->nduseropt_family = AF_INET6;
+ ndmsg->nduseropt_ifindex = ra->dev->ifindex;
ndmsg->nduseropt_icmp_type = icmp6h->icmp6_type;
ndmsg->nduseropt_icmp_code = icmp6h->icmp6_code;
ndmsg->nduseropt_opts_len = opt->nd_opt_len << 3;