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Date: Sat, 12 Jan 2013 23:21:44 +0900
From: YOSHIFUJI Hideaki <yoshfuji@...ux-ipv6.org>
To: Stephan Gatzka <stephan.gatzka@...il.com>,
Stefan Richter <stefanr@...6.in-berlin.de>
CC: netdev@...r.kernel.org, linux1394-devel@...ts.sourceforge.net,
yoshfuji@...ux-ipv6.org
Subject: [RFC PATCH 6/6] ipv6: IPv6 over IEEE1394 (RFC3146) support.
CC: Stephan Gatzka <stephan.gatzka@...il.com>
CC: Stefan Richter <stefanr@...6.in-berlin.de>
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@...ux-ipv6.org>
---
include/net/ndisc.h | 14 +++++++++++-
net/ipv6/addrconf.c | 4 +++-
net/ipv6/ndisc.c | 60 +++++++++++++++++++++++++++++++++++++++++++++++----
net/ipv6/route.c | 2 ++
4 files changed, 74 insertions(+), 6 deletions(-)
diff --git a/include/net/ndisc.h b/include/net/ndisc.h
index 3c53257..1de4e0c 100644
--- a/include/net/ndisc.h
+++ b/include/net/ndisc.h
@@ -52,6 +52,7 @@ enum {
#include <linux/hash.h>
#include <net/neighbour.h>
+#include <net/firewire.h>
struct ctl_table;
struct inet6_dev;
@@ -127,10 +128,19 @@ static int ndisc_addr_option_pad(unsigned short type)
}
}
+static int ndisc_addr_option_postpad(unsigned short type)
+{
+ switch (type) {
+ case ARPHRD_IEEE1394: return sizeof(struct fwnet_peerinfo);
+ default: return 0;
+ }
+}
+
static inline int ndisc_opt_addr_space(struct net_device *dev)
{
return NDISC_OPT_SPACE(dev->addr_len +
- ndisc_addr_option_pad(dev->type));
+ ndisc_addr_option_pad(dev->type) +
+ ndisc_addr_option_postpad(dev->type));
}
static inline u8 *ndisc_opt_addr_data(struct nd_opt_hdr *p,
@@ -203,6 +213,8 @@ extern void ndisc_send_redirect(struct sk_buff *skb,
extern int ndisc_mc_map(const struct in6_addr *addr, char *buf,
struct net_device *dev, int dir);
+extern void ndisc_update_peerinfo(struct net_device *dev,
+ void *lladdr);
/*
* IGMP
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 408cac4a..9a0728a 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -1729,6 +1729,7 @@ static int ipv6_generate_eui64(u8 *eui, struct net_device *dev)
case ARPHRD_IPGRE:
return addrconf_ifid_gre(eui, dev);
case ARPHRD_IEEE802154:
+ case ARPHRD_IEEE1394:
return addrconf_ifid_eui64(eui, dev);
}
return -1;
@@ -2571,7 +2572,8 @@ static void addrconf_dev_config(struct net_device *dev)
(dev->type != ARPHRD_FDDI) &&
(dev->type != ARPHRD_ARCNET) &&
(dev->type != ARPHRD_INFINIBAND) &&
- (dev->type != ARPHRD_IEEE802154)) {
+ (dev->type != ARPHRD_IEEE802154) &&
+ (dev->type != ARPHRD_IEEE1394)) {
/* Alas, we support only Ethernet autoconfiguration. */
return;
}
diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c
index 99cd286..9a0ba9c 100644
--- a/net/ipv6/ndisc.c
+++ b/net/ipv6/ndisc.c
@@ -72,6 +72,8 @@
#include <linux/netfilter.h>
#include <linux/netfilter_ipv6.h>
+#include <net/firewire.h>
+
/* Set to 3 to get tracing... */
#define ND_DEBUG 1
@@ -143,6 +145,22 @@ struct neigh_table nd_tbl = {
.gc_thresh3 = 1024,
};
+#if defined(CONFIG_FIREWIRE_NET)
+static u8 *__ndisc_fill_addr_option_firewire_postpad(u8 *opt, int space, void *data,
+ struct net_device *dev)
+{
+ if (likely(space >= sizeof(struct fwnet_peerinfo))) {
+ fwnet_fill_peerinfo(dev, (__be64 *)data, (struct fwnet_peerinfo *)opt);
+ opt += sizeof(struct fwnet_peerinfo);
+ space -= sizeof(struct fwnet_peerinfo);
+ }
+ if (space > 0)
+ memset(opt, 0, space);
+
+ return opt + space;
+}
+#endif
+
static u8 *ndisc_fill_addr_option(u8 *opt, int type, void *data,
struct net_device *dev)
{
@@ -160,9 +178,20 @@ static u8 *ndisc_fill_addr_option(u8 *opt, int type, void *data,
memcpy(opt+2, data, data_len);
data_len += 2;
opt += data_len;
- if ((space -= data_len) > 0)
- memset(opt, 0, space);
- return opt + space;
+
+ if ((space -= data_len) > 0) {
+ switch (dev->type) {
+#if defined(CONFIG_FIREWIRE_NET)
+ case ARPHRD_IEEE1394:
+ opt = __ndisc_fill_addr_option_firewire_postpad(opt, space,
+ data, dev);
+#endif
+ default:
+ memset(opt, 0, space);
+ opt += space;
+ }
+ }
+ return opt;
}
static struct nd_opt_hdr *ndisc_next_option(struct nd_opt_hdr *cur,
@@ -366,6 +395,19 @@ static void pndisc_destructor(struct pneigh_entry *n)
ipv6_dev_mc_dec(dev, &maddr);
}
+void ndisc_update_peerinfo(struct net_device *dev, void *lladdr)
+{
+#if defined(CONFIG_FIREWIRE_NET)
+ switch (dev->type) {
+ case ARPHRD_IEEE1394:
+ fwnet_update_peerinfo(dev, lladdr, (struct fwnet_peerinfo *)((__u64 *)lladdr + 1));
+ break;
+ default:
+ break;
+ }
+#endif
+}
+
static struct sk_buff *ndisc_build_skb(struct net_device *dev,
const struct in6_addr *daddr,
const struct in6_addr *saddr,
@@ -798,6 +840,9 @@ static void ndisc_recv_ns(struct sk_buff *skb)
neigh_update(neigh, lladdr, NUD_STALE,
NEIGH_UPDATE_F_WEAK_OVERRIDE|
NEIGH_UPDATE_F_OVERRIDE);
+
+ ndisc_update_peerinfo(dev, lladdr);
+
if (neigh || !dev->header_ops) {
ndisc_send_na(dev, neigh, saddr, &msg->target,
is_router,
@@ -905,6 +950,8 @@ static void ndisc_recv_na(struct sk_buff *skb)
NEIGH_UPDATE_F_OVERRIDE_ISROUTER|
(msg->icmph.icmp6_router ? NEIGH_UPDATE_F_ISROUTER : 0));
+ ndisc_update_peerinfo(dev, lladdr);
+
if ((old_flags & ~neigh->flags) & NTF_ROUTER) {
/*
* Change: router to host
@@ -970,6 +1017,8 @@ static void ndisc_recv_rs(struct sk_buff *skb)
NEIGH_UPDATE_F_OVERRIDE|
NEIGH_UPDATE_F_OVERRIDE_ISROUTER);
neigh_release(neigh);
+
+ ndisc_update_peerinfo(skb->dev, lladdr);
}
out:
return;
@@ -1223,6 +1272,8 @@ skip_linkparms:
NEIGH_UPDATE_F_OVERRIDE|
NEIGH_UPDATE_F_OVERRIDE_ISROUTER|
NEIGH_UPDATE_F_ISROUTER);
+
+ ndisc_update_peerinfo(skb->dev, lladdr);
}
if (!ipv6_accept_ra(in6_dev))
@@ -1405,7 +1456,8 @@ void ndisc_send_redirect(struct sk_buff *skb, const struct in6_addr *target)
if (!ret)
goto release;
- if (dev->addr_len) {
+ /* XXX* We have not idea about IEEE1394 peer infomation */
+ if (dev->addr_len && dev->type != ARPHRD_IEEE1394) {
struct neighbour *neigh = dst_neigh_lookup(skb_dst(skb), target);
if (!neigh) {
ND_PRINTK(2, warn,
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 621b68e..27c5127 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -1795,6 +1795,8 @@ static void rt6_do_redirect(struct dst_entry *dst, struct sock *sk, struct sk_bu
NEIGH_UPDATE_F_ISROUTER))
);
+ ndisc_update_peerinfo(skb->dev, lladdr);
+
nrt = ip6_rt_copy(rt, &msg->dest);
if (!nrt)
goto out;
--
1.7.9.5
--
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