> > This is sort of what I had originally, so I should be able to change
> > it to do this quite easily. I didn't like the earlier suggestion of
> > using existing RTM_xxxLINK with RTM_xxxIFACE (since it was dev
generic),
> > but having a new interface RTM_xxxIFACE sounds good to me.
> Actually, the original plan was to use ifli_family to query something
> or to direct a request to a specific interface on some netdevice.
> I wanted to reserve IFLI_PROTINFO attribute to encapsulate information
> private for specific family. It was not realized mostly because of
absense
> of such information.
>
> Maybe, you will want to resurrect this.
I am sorry, but I have no idea what you are talking about :-)
I am including patch with what was agreed upon yesterday by everyone. I
have tested the prefix list retrieval by using ip (with slight changes to
ip command,now I can dump prefix by "ip -f inet6 route prefix", with
identical format to "ip -f inet6 route" command). For the O/M flags, I am
using a new RTM_GETIFFLAGS but if needed this can be changed to use
RTM_GETLNKINFO (or something) with RTA_IFFLAGS, if multiple data needs to
be returned. If that is needed, I can submit a (5 line?) patch to be
applied after this is accepted..
Thanks,
- KK
diff -ruN linux-2.5.73.org/include/linux/ipv6_route.h test/linux-2.5.73/include/linux/ipv6_route.h
--- linux-2.5.73.org/include/linux/ipv6_route.h 2003-06-22 11:32:36.000000000 -0700
+++ test/linux-2.5.73/include/linux/ipv6_route.h 2003-07-17 11:38:23.000000000 -0700
@@ -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 -ruN linux-2.5.73.org/include/linux/rtnetlink.h test/linux-2.5.73/include/linux/rtnetlink.h
--- linux-2.5.73.org/include/linux/rtnetlink.h 2003-06-22 11:33:07.000000000 -0700
+++ test/linux-2.5.73/include/linux/rtnetlink.h 2003-07-16 17:23:06.000000000 -0700
@@ -47,7 +47,9 @@
#define RTM_DELTFILTER (RTM_BASE+29)
#define RTM_GETTFILTER (RTM_BASE+30)
-#define RTM_MAX (RTM_BASE+31)
+#define RTM_GETIFFLAGS (RTM_BASE+34)
+
+#define RTM_MAX (RTM_GETIFFLAGS+1)
/*
Generic structure for encapsulation of optional route information.
@@ -61,6 +63,13 @@
unsigned short rta_type;
};
+/* Structure to return per interface device flags */
+struct ifp_if6info
+{
+ int ifindex;
+ int flags;
+};
+
/* Macros to handle rtattributes */
#define RTA_ALIGNTO 4
@@ -168,6 +177,7 @@
#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 -ruN linux-2.5.73.org/include/net/if_inet6.h test/linux-2.5.73/include/net/if_inet6.h
--- linux-2.5.73.org/include/net/if_inet6.h 2003-06-22 11:33:32.000000000 -0700
+++ test/linux-2.5.73/include/net/if_inet6.h 2003-07-16 17:23:24.000000000 -0700
@@ -17,6 +17,8 @@
#include <net/snmp.h>
+#define IF_RA_OTHERCONF 0x80
+#define IF_RA_MANAGED 0x40
#define IF_RA_RCVD 0x20
#define IF_RS_SENT 0x10
diff -ruN linux-2.5.73.org/net/ipv6/addrconf.c test/linux-2.5.73/net/ipv6/addrconf.c
--- linux-2.5.73.org/net/ipv6/addrconf.c 2003-06-22 11:33:17.000000000 -0700
+++ test/linux-2.5.73/net/ipv6/addrconf.c 2003-07-17 11:40:48.000000000 -0700
@@ -129,7 +129,7 @@
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);
@@ -715,7 +715,7 @@
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:
@@ -1211,7 +1211,7 @@
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);
}
@@ -1238,7 +1238,7 @@
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)
@@ -1330,7 +1330,8 @@
}
} else if (pinfo->onlink && 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);
@@ -1378,7 +1379,7 @@
}
create = 1;
- addrconf_dad_start(ifp);
+ addrconf_dad_start(ifp, RTF_ADDRCONF|RTF_PREFIX_RT);
}
if (ifp && valid_lft == 0) {
@@ -1529,7 +1530,7 @@
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;
}
@@ -1704,7 +1705,7 @@
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);
}
}
@@ -1943,8 +1944,7 @@
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;
@@ -1958,7 +1958,7 @@
/*
* 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;
@@ -1968,7 +1968,7 @@
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);
@@ -2451,6 +2451,42 @@
netlink_broadcast(rtnl, skb, 0, RTMGRP_IPV6_IFADDR, GFP_ATOMIC);
}
+int inet6_dump_linkflags(struct sk_buff *skb, struct netlink_callback *cb)
+{
+ int ifindex, flags;
+ struct net_device *dev;
+ struct inet6_dev *idev;
+ struct nlmsghdr *nlh;
+ struct ifp_if6info *ifp = NLMSG_DATA(cb->nlh);
+ unsigned char *org_tail = skb->tail;
+
+ ifindex = ifp->ifindex;
+ if ((dev = dev_get_by_index(ifindex)) == NULL)
+ goto out;
+ if ((idev = in6_dev_get(dev)) != NULL) {
+ flags = idev->if_flags;
+ in6_dev_put(idev);
+ } else
+ flags = 0;
+ dev_put(dev);
+
+ nlh = NLMSG_PUT(skb, NETLINK_CB(cb->skb).pid, cb->nlh->nlmsg_seq,
+ RTM_GETIFFLAGS, sizeof(*ifp));
+ ifp = NLMSG_DATA(nlh);
+ ifp->flags = flags;
+ ifp->ifindex = ifindex; /* duplicate info for user to verify */
+
+ nlh->nlmsg_len = skb->tail - org_tail;
+ return skb->len;
+
+nlmsg_failure:
+ printk(KERN_INFO "inet6_dump_linkflags:skb size not enough\n");
+ skb_trim(skb, org_tail - skb->data);
+
+out:
+ return -1;
+}
+
static struct rtnetlink_link inet6_rtnetlink_table[RTM_MAX - RTM_BASE + 1] = {
[RTM_NEWADDR - RTM_BASE] = { .doit = inet6_rtm_newaddr, },
[RTM_DELADDR - RTM_BASE] = { .doit = inet6_rtm_deladdr, },
@@ -2459,6 +2495,7 @@
[RTM_DELROUTE - RTM_BASE] = { .doit = inet6_rtm_delroute, },
[RTM_GETROUTE - RTM_BASE] = { .doit = inet6_rtm_getroute,
.dumpit = inet6_dump_fib, },
+ [RTM_GETIFFLAGS - RTM_BASE] = {.dumpit = inet6_dump_linkflags, },
};
static void ipv6_ifa_notify(int event, struct inet6_ifaddr *ifp)
diff -ruN linux-2.5.73.org/net/ipv6/ndisc.c test/linux-2.5.73/net/ipv6/ndisc.c
--- linux-2.5.73.org/net/ipv6/ndisc.c 2003-06-22 11:32:56.000000000 -0700
+++ test/linux-2.5.73/net/ipv6/ndisc.c 2003-07-14 15:06:14.000000000 -0700
@@ -1036,6 +1036,16 @@
*/
in6_dev->if_flags |= IF_RA_RCVD;
}
+ /*
+ * Remember the managed/otherconf flags from most recently
+ * receieved RA message (RFC 2462) -- yoshfuji
+ */
+ in6_dev->if_flags = (in6_dev->if_flags & ~(IF_RA_MANAGED|
+ IF_RA_OTHERCONF)) |
+ (ra_msg->icmph.icmp6_addrconf_managed ?
+ IF_RA_MANAGED : 0) |
+ (ra_msg->icmph.icmp6_addrconf_other ?
+ IF_RA_OTHERCONF : 0);
lifetime = ntohs(ra_msg->icmph.icmp6_rt_lifetime);
diff -ruN linux-2.5.73.org/net/ipv6/route.c test/linux-2.5.73/net/ipv6/route.c
--- linux-2.5.73.org/net/ipv6/route.c 2003-06-22 11:33:05.000000000 -0700
+++ test/linux-2.5.73/net/ipv6/route.c 2003-07-16 10:42:01.000000000 -0700
@@ -1400,13 +1400,20 @@
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;
}
@@ -1487,10 +1494,16 @@
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)
@@ -1638,7 +1651,7 @@
&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;
@@ -1664,7 +1677,7 @@
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;
-
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