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-rw-r--r--include/linux/ipv6_route.h1
-rw-r--r--include/linux/rtnetlink.h1
-rw-r--r--net/ipv6/addrconf.c24
-rw-r--r--net/ipv6/route.c22
4 files changed, 32 insertions, 16 deletions
diff --git a/include/linux/ipv6_route.h b/include/linux/ipv6_route.h
index eacfa6c80f0e..46d8b7e8b1aa 100644
--- a/include/linux/ipv6_route.h
+++ b/include/linux/ipv6_route.h
@@ -16,6 +16,7 @@
#define RTF_DEFAULT 0x00010000 /* default - learned via ND */
#define RTF_ALLONLINK 0x00020000 /* fallback, no routers on link */
#define RTF_ADDRCONF 0x00040000 /* addrconf route - RA */
+#define RTF_PREFIX_RT 0x00080000 /* A prefix only route - RA */
#define RTF_NONEXTHOP 0x00200000 /* route with no nexthop */
#define RTF_EXPIRES 0x00400000
diff --git a/include/linux/rtnetlink.h b/include/linux/rtnetlink.h
index 788132027e48..fe336b23e5cb 100644
--- a/include/linux/rtnetlink.h
+++ b/include/linux/rtnetlink.h
@@ -168,6 +168,7 @@ enum rt_scope_t
#define RTM_F_NOTIFY 0x100 /* Notify user of route change */
#define RTM_F_CLONED 0x200 /* This route is cloned */
#define RTM_F_EQUALIZE 0x400 /* Multipath equalizer: NI */
+#define RTM_F_PREFIX 0x800 /* Prefix addresses */
/* Reserved table identifiers */
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 649df9f76068..925effb2390c 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -130,7 +130,7 @@ static spinlock_t addrconf_verify_lock = SPIN_LOCK_UNLOCKED;
static int addrconf_ifdown(struct net_device *dev, int how);
-static void addrconf_dad_start(struct inet6_ifaddr *ifp);
+static void addrconf_dad_start(struct inet6_ifaddr *ifp, int flags);
static void addrconf_dad_timer(unsigned long data);
static void addrconf_dad_completed(struct inet6_ifaddr *ifp);
static void addrconf_rs_timer(unsigned long data);
@@ -710,7 +710,7 @@ retry:
ift->prefered_lft = tmp_prefered_lft;
ift->tstamp = ifp->tstamp;
spin_unlock_bh(&ift->lock);
- addrconf_dad_start(ift);
+ addrconf_dad_start(ift, 0);
in6_ifa_put(ift);
in6_dev_put(idev);
out:
@@ -1247,7 +1247,7 @@ static void addrconf_add_mroute(struct net_device *dev)
rtmsg.rtmsg_dst_len = 8;
rtmsg.rtmsg_metric = IP6_RT_PRIO_ADDRCONF;
rtmsg.rtmsg_ifindex = dev->ifindex;
- rtmsg.rtmsg_flags = RTF_UP|RTF_ADDRCONF;
+ rtmsg.rtmsg_flags = RTF_UP;
rtmsg.rtmsg_type = RTMSG_NEWROUTE;
ip6_route_add(&rtmsg, NULL, NULL);
}
@@ -1274,7 +1274,7 @@ static void addrconf_add_lroute(struct net_device *dev)
struct in6_addr addr;
ipv6_addr_set(&addr, htonl(0xFE800000), 0, 0, 0);
- addrconf_prefix_route(&addr, 64, dev, 0, RTF_ADDRCONF);
+ addrconf_prefix_route(&addr, 64, dev, 0, 0);
}
static struct inet6_dev *addrconf_add_dev(struct net_device *dev)
@@ -1367,7 +1367,7 @@ void addrconf_prefix_rcv(struct net_device *dev, u8 *opt, int len)
}
} else if (valid_lft) {
addrconf_prefix_route(&pinfo->prefix, pinfo->prefix_len,
- dev, rt_expires, RTF_ADDRCONF|RTF_EXPIRES);
+ dev, rt_expires, RTF_ADDRCONF|RTF_EXPIRES|RTF_PREFIX_RT);
}
if (rt)
dst_release(&rt->u.dst);
@@ -1413,7 +1413,7 @@ ok:
}
update_lft = create = 1;
- addrconf_dad_start(ifp);
+ addrconf_dad_start(ifp, RTF_ADDRCONF|RTF_PREFIX_RT);
}
if (ifp) {
@@ -1586,7 +1586,7 @@ static int inet6_addr_add(int ifindex, struct in6_addr *pfx, int plen)
ifp = ipv6_add_addr(idev, pfx, plen, scope, IFA_F_PERMANENT);
if (!IS_ERR(ifp)) {
- addrconf_dad_start(ifp);
+ addrconf_dad_start(ifp, 0);
in6_ifa_put(ifp);
return 0;
}
@@ -1761,7 +1761,7 @@ static void addrconf_add_linklocal(struct inet6_dev *idev, struct in6_addr *addr
ifp = ipv6_add_addr(idev, addr, 64, IFA_LINK, IFA_F_PERMANENT);
if (!IS_ERR(ifp)) {
- addrconf_dad_start(ifp);
+ addrconf_dad_start(ifp, 0);
in6_ifa_put(ifp);
}
}
@@ -2021,8 +2021,7 @@ static void addrconf_rs_timer(unsigned long data)
memset(&rtmsg, 0, sizeof(struct in6_rtmsg));
rtmsg.rtmsg_type = RTMSG_NEWROUTE;
rtmsg.rtmsg_metric = IP6_RT_PRIO_ADDRCONF;
- rtmsg.rtmsg_flags = (RTF_ALLONLINK | RTF_ADDRCONF |
- RTF_DEFAULT | RTF_UP);
+ rtmsg.rtmsg_flags = (RTF_ALLONLINK | RTF_DEFAULT | RTF_UP);
rtmsg.rtmsg_ifindex = ifp->idev->dev->ifindex;
@@ -2036,7 +2035,7 @@ out:
/*
* Duplicate Address Detection
*/
-static void addrconf_dad_start(struct inet6_ifaddr *ifp)
+static void addrconf_dad_start(struct inet6_ifaddr *ifp, int flags)
{
struct net_device *dev;
unsigned long rand_num;
@@ -2046,7 +2045,8 @@ static void addrconf_dad_start(struct inet6_ifaddr *ifp)
addrconf_join_solict(dev, &ifp->addr);
if (ifp->prefix_len != 128 && (ifp->flags&IFA_F_PERMANENT))
- addrconf_prefix_route(&ifp->addr, ifp->prefix_len, dev, 0, RTF_ADDRCONF);
+ addrconf_prefix_route(&ifp->addr, ifp->prefix_len, dev, 0,
+ flags);
net_srandom(ifp->addr.s6_addr32[3]);
rand_num = net_random() % (ifp->idev->cnf.rtr_solicit_delay ? : 1);
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 69d7791712f8..b3adf22ef02e 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -1459,13 +1459,20 @@ static int rt6_fill_node(struct sk_buff *skb, struct rt6_info *rt,
struct in6_addr *src,
int iif,
int type, u32 pid, u32 seq,
- struct nlmsghdr *in_nlh)
+ struct nlmsghdr *in_nlh, int prefix)
{
struct rtmsg *rtm;
struct nlmsghdr *nlh;
unsigned char *b = skb->tail;
struct rta_cacheinfo ci;
+ if (prefix) { /* user wants prefix routes only */
+ if (!(rt->rt6i_flags & RTF_PREFIX_RT)) {
+ /* success since this is not a prefix route */
+ return 1;
+ }
+ }
+
if (!pid && in_nlh) {
pid = in_nlh->nlmsg_pid;
}
@@ -1546,10 +1553,17 @@ rtattr_failure:
static int rt6_dump_route(struct rt6_info *rt, void *p_arg)
{
struct rt6_rtnl_dump_arg *arg = (struct rt6_rtnl_dump_arg *) p_arg;
+ struct rtmsg *rtm;
+ int prefix;
+
+ rtm = NLMSG_DATA(arg->cb->nlh);
+ if (rtm)
+ prefix = (rtm->rtm_flags & RTM_F_PREFIX) != 0;
+ else prefix = 0;
return rt6_fill_node(arg->skb, rt, NULL, NULL, 0, RTM_NEWROUTE,
NETLINK_CB(arg->cb->skb).pid, arg->cb->nlh->nlmsg_seq,
- NULL);
+ NULL, prefix);
}
static int fib6_dump_node(struct fib6_walker_t *w)
@@ -1697,7 +1711,7 @@ int inet6_rtm_getroute(struct sk_buff *in_skb, struct nlmsghdr* nlh, void *arg)
&fl.fl6_dst, &fl.fl6_src,
iif,
RTM_NEWROUTE, NETLINK_CB(in_skb).pid,
- nlh->nlmsg_seq, nlh);
+ nlh->nlmsg_seq, nlh, 0);
if (err < 0) {
err = -EMSGSIZE;
goto out_free;
@@ -1723,7 +1737,7 @@ void inet6_rt_notify(int event, struct rt6_info *rt, struct nlmsghdr *nlh)
netlink_set_err(rtnl, 0, RTMGRP_IPV6_ROUTE, ENOBUFS);
return;
}
- if (rt6_fill_node(skb, rt, NULL, NULL, 0, event, 0, 0, nlh) < 0) {
+ if (rt6_fill_node(skb, rt, NULL, NULL, 0, event, 0, 0, nlh, 0) < 0) {
kfree_skb(skb);
netlink_set_err(rtnl, 0, RTMGRP_IPV6_ROUTE, EINVAL);
return;
generated by cgit v1.2.3 (git 2.46.0) at 2026-02-10 22:08:17 +0000