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Message-Id: <20070425.215521.118284577.yoshfuji@linux-ipv6.org>
Date: Wed, 25 Apr 2007 21:55:21 +0900 (JST)
From: YOSHIFUJI Hideaki / 吉藤英明
<yoshfuji@...ux-ipv6.org>
To: davem@...emloft.net
Cc: netdev@...r.kernel.org, yoshfuji@...ux-ipv6.org
Subject: [GIT PATCH] [net-2.6.22] IPv6, IPv4 Updates
Dave,
Please consider pulling following commits available on
net-2.6.22-20070425a-inet6-cleanup-20070425
branch at
<git://git.linux-ipv6.org/gitroot/yoshfuji/linux-2.6-dev.git>.
HEADLINES
---------
[IPV6] SIT: Unify code path to get hash array index.
[IPV4] IPIP: Unify code path to get hash array index.
[IPV4] IP_GRE: Unify code path to get hash array index.
[IPV6]: Export in6addr_any for future use.
[IPV6] XFRM: Use ip6addr_any where applicable.
[IPV6] NDISC: Unify main process of sending ND messages.
DIFFSTAT
--------
include/linux/in6.h | 2
net/ipv4/ip_gre.c | 23 ++--
net/ipv4/ipip.c | 22 +---
net/ipv6/addrconf.c | 2
net/ipv6/ndisc.c | 283 ++++++++++++++----------------------------------
net/ipv6/sit.c | 23 ++--
net/ipv6/xfrm6_input.c | 4 -
7 files changed, 112 insertions(+), 247 deletions(-)
CHANGESETS
----------
commit ed808452811f1b5b55727ab6c5336a488d5689b4
Author: YOSHIFUJI Hideaki <yoshfuji@...ux-ipv6.org>
Date: Tue Apr 24 20:44:47 2007 +0900
[IPV6] SIT: Unify code path to get hash array index.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@...ux-ipv6.org>
diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
index 27fe10f..1efa95a 100644
--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -99,10 +99,10 @@ static struct ip_tunnel * ipip6_tunnel_lookup(__be32 remote, __be32 local)
return NULL;
}
-static struct ip_tunnel ** ipip6_bucket(struct ip_tunnel *t)
+static struct ip_tunnel **__ipip6_bucket(struct ip_tunnel_parm *parms)
{
- __be32 remote = t->parms.iph.daddr;
- __be32 local = t->parms.iph.saddr;
+ __be32 remote = parms->iph.daddr;
+ __be32 local = parms->iph.saddr;
unsigned h = 0;
int prio = 0;
@@ -117,6 +117,11 @@ static struct ip_tunnel ** ipip6_bucket(struct ip_tunnel *t)
return &tunnels[prio][h];
}
+static inline struct ip_tunnel **ipip6_bucket(struct ip_tunnel *t)
+{
+ return __ipip6_bucket(&t->parms);
+}
+
static void ipip6_tunnel_unlink(struct ip_tunnel *t)
{
struct ip_tunnel **tp;
@@ -147,19 +152,9 @@ static struct ip_tunnel * ipip6_tunnel_locate(struct ip_tunnel_parm *parms, int
__be32 local = parms->iph.saddr;
struct ip_tunnel *t, **tp, *nt;
struct net_device *dev;
- unsigned h = 0;
- int prio = 0;
char name[IFNAMSIZ];
- if (remote) {
- prio |= 2;
- h ^= HASH(remote);
- }
- if (local) {
- prio |= 1;
- h ^= HASH(local);
- }
- for (tp = &tunnels[prio][h]; (t = *tp) != NULL; tp = &t->next) {
+ for (tp = __ipip6_bucket(parms); (t = *tp) != NULL; tp = &t->next) {
if (local == t->parms.iph.saddr && remote == t->parms.iph.daddr)
return t;
}
---
commit 2f66586f53dd6319323c7d0c6ac0d4a4fb522865
Author: YOSHIFUJI Hideaki <yoshfuji@...ux-ipv6.org>
Date: Tue Apr 24 20:44:47 2007 +0900
[IPV4] IPIP: Unify code path to get hash array index.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@...ux-ipv6.org>
diff --git a/net/ipv4/ipip.c b/net/ipv4/ipip.c
index 37ab391..ebd2f2d 100644
--- a/net/ipv4/ipip.c
+++ b/net/ipv4/ipip.c
@@ -157,10 +157,10 @@ static struct ip_tunnel * ipip_tunnel_lookup(__be32 remote, __be32 local)
return NULL;
}
-static struct ip_tunnel **ipip_bucket(struct ip_tunnel *t)
+static struct ip_tunnel **__ipip_bucket(struct ip_tunnel_parm *parms)
{
- __be32 remote = t->parms.iph.daddr;
- __be32 local = t->parms.iph.saddr;
+ __be32 remote = parms->iph.daddr;
+ __be32 local = parms->iph.saddr;
unsigned h = 0;
int prio = 0;
@@ -175,6 +175,10 @@ static struct ip_tunnel **ipip_bucket(struct ip_tunnel *t)
return &tunnels[prio][h];
}
+static inline struct ip_tunnel **ipip_bucket(struct ip_tunnel *t)
+{
+ return __ipip_bucket(&t->parms);
+}
static void ipip_tunnel_unlink(struct ip_tunnel *t)
{
@@ -206,19 +210,9 @@ static struct ip_tunnel * ipip_tunnel_locate(struct ip_tunnel_parm *parms, int c
__be32 local = parms->iph.saddr;
struct ip_tunnel *t, **tp, *nt;
struct net_device *dev;
- unsigned h = 0;
- int prio = 0;
char name[IFNAMSIZ];
- if (remote) {
- prio |= 2;
- h ^= HASH(remote);
- }
- if (local) {
- prio |= 1;
- h ^= HASH(local);
- }
- for (tp = &tunnels[prio][h]; (t = *tp) != NULL; tp = &t->next) {
+ for (tp = __ipip_bucket(parms); (t = *tp) != NULL; tp = &t->next) {
if (local == t->parms.iph.saddr && remote == t->parms.iph.daddr)
return t;
}
---
commit e8b22bea08420e24a09e32972f455c21206fe102
Author: YOSHIFUJI Hideaki <yoshfuji@...ux-ipv6.org>
Date: Tue Apr 24 20:44:48 2007 +0900
[IPV4] IP_GRE: Unify code path to get hash array index.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@...ux-ipv6.org>
diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c
index f49afaa..6328293 100644
--- a/net/ipv4/ip_gre.c
+++ b/net/ipv4/ip_gre.c
@@ -191,11 +191,11 @@ static struct ip_tunnel * ipgre_tunnel_lookup(__be32 remote, __be32 local, __be3
return NULL;
}
-static struct ip_tunnel **ipgre_bucket(struct ip_tunnel *t)
+static struct ip_tunnel **__ipgre_bucket(struct ip_tunnel_parm *parms)
{
- __be32 remote = t->parms.iph.daddr;
- __be32 local = t->parms.iph.saddr;
- __be32 key = t->parms.i_key;
+ __be32 remote = parms->iph.daddr;
+ __be32 local = parms->iph.saddr;
+ __be32 key = parms->i_key;
unsigned h = HASH(key);
int prio = 0;
@@ -209,6 +209,11 @@ static struct ip_tunnel **ipgre_bucket(struct ip_tunnel *t)
return &tunnels[prio][h];
}
+static inline struct ip_tunnel **ipgre_bucket(struct ip_tunnel *t)
+{
+ return __ipgre_bucket(&t->parms);
+}
+
static void ipgre_tunnel_link(struct ip_tunnel *t)
{
struct ip_tunnel **tp = ipgre_bucket(t);
@@ -240,17 +245,9 @@ static struct ip_tunnel * ipgre_tunnel_locate(struct ip_tunnel_parm *parms, int
__be32 key = parms->i_key;
struct ip_tunnel *t, **tp, *nt;
struct net_device *dev;
- unsigned h = HASH(key);
- int prio = 0;
char name[IFNAMSIZ];
- if (local)
- prio |= 1;
- if (remote && !MULTICAST(remote)) {
- prio |= 2;
- h ^= HASH(remote);
- }
- for (tp = &tunnels[prio][h]; (t = *tp) != NULL; tp = &t->next) {
+ for (tp = __ipgre_bucket(parms); (t = *tp) != NULL; tp = &t->next) {
if (local == t->parms.iph.saddr && remote == t->parms.iph.daddr) {
if (key == t->parms.i_key)
return t;
---
commit 14d6a0aa862954e03a7f1a479a83d153d2137c02
Author: YOSHIFUJI Hideaki <yoshfuji@...ux-ipv6.org>
Date: Tue Apr 24 20:44:49 2007 +0900
[IPV6]: Export in6addr_any for future use.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@...ux-ipv6.org>
diff --git a/include/linux/in6.h b/include/linux/in6.h
index d559fac..2a61c82 100644
--- a/include/linux/in6.h
+++ b/include/linux/in6.h
@@ -44,10 +44,8 @@ struct in6_addr
* NOTE: Be aware the IN6ADDR_* constants and in6addr_* externals are defined
* in network byte order, not in host byte order as are the IPv4 equivalents
*/
-#if 0
extern const struct in6_addr in6addr_any;
#define IN6ADDR_ANY_INIT { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } } }
-#endif
extern const struct in6_addr in6addr_loopback;
#define IN6ADDR_LOOPBACK_INIT { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 } } }
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index eea7ef4..82290db 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -209,9 +209,7 @@ static struct ipv6_devconf ipv6_devconf_dflt __read_mostly = {
};
/* IPv6 Wildcard Address and Loopback Address defined by RFC2553 */
-#if 0
const struct in6_addr in6addr_any = IN6ADDR_ANY_INIT;
-#endif
const struct in6_addr in6addr_loopback = IN6ADDR_LOOPBACK_INIT;
static void addrconf_del_timer(struct inet6_ifaddr *ifp)
---
commit daa416b32ead1dc0608a9cb450ba9a3e2ff9ff06
Author: YOSHIFUJI Hideaki <yoshfuji@...ux-ipv6.org>
Date: Tue Apr 24 20:44:50 2007 +0900
[IPV6] XFRM: Use ip6addr_any where applicable.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@...ux-ipv6.org>
diff --git a/net/ipv6/xfrm6_input.c b/net/ipv6/xfrm6_input.c
index f30ef16..d7ed8aa 100644
--- a/net/ipv6/xfrm6_input.c
+++ b/net/ipv6/xfrm6_input.c
@@ -147,14 +147,12 @@ int xfrm6_input_addr(struct sk_buff *skb, xfrm_address_t *daddr,
{
struct xfrm_state *x = NULL;
int wildcard = 0;
- struct in6_addr any;
xfrm_address_t *xany;
struct xfrm_state *xfrm_vec_one = NULL;
int nh = 0;
int i = 0;
- ipv6_addr_set(&any, 0, 0, 0, 0);
- xany = (xfrm_address_t *)&any;
+ xany = (xfrm_address_t *)&in6addr_any;
for (i = 0; i < 3; i++) {
xfrm_address_t *dst, *src;
---
commit 2c97a472d3aa2109bce78211e751febd2ee4ab7e
Author: YOSHIFUJI Hideaki <yoshfuji@...ux-ipv6.org>
Date: Tue Apr 24 20:44:52 2007 +0900
[IPV6] NDISC: Unify main process of sending ND messages.
Because ndisc_send_na(), ndisc_send_ns() and ndisc_send_rs()
are almost identical, so let's unify their common part.
With gcc (GCC) 3.3.5 (Debian 1:3.3.5-13) on i386,
Before:
text data bss dec hex filename
14689 364 24 15077 3ae5 net/ipv6/ndisc.o
After:
text data bss dec hex filename
12317 364 24 12705 31a1 net/ipv6/ndisc.o
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@...ux-ipv6.org>
diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c
index 4ee1216..d8b3645 100644
--- a/net/ipv6/ndisc.c
+++ b/net/ipv6/ndisc.c
@@ -427,38 +427,23 @@ static inline void ndisc_flow_init(struct flowi *fl, u8 type,
security_sk_classify_flow(ndisc_socket->sk, fl);
}
-static void ndisc_send_na(struct net_device *dev, struct neighbour *neigh,
- struct in6_addr *daddr, struct in6_addr *solicited_addr,
- int router, int solicited, int override, int inc_opt)
+static void __ndisc_send(struct net_device *dev,
+ struct neighbour *neigh,
+ struct in6_addr *daddr, struct in6_addr *saddr,
+ struct icmp6hdr *icmp6h, struct in6_addr *target,
+ int llinfo, int icmp6_mib_outnd)
{
- struct in6_addr tmpaddr;
- struct inet6_ifaddr *ifp;
- struct inet6_dev *idev;
struct flowi fl;
- struct dst_entry* dst;
+ struct dst_entry *dst;
struct sock *sk = ndisc_socket->sk;
- struct in6_addr *src_addr;
- struct nd_msg *msg;
- int len;
struct sk_buff *skb;
+ struct icmp6hdr *hdr;
+ struct inet6_dev *idev;
+ int len;
int err;
+ u8 *opt;
- len = sizeof(struct icmp6hdr) + sizeof(struct in6_addr);
-
- /* for anycast or proxy, solicited_addr != src_addr */
- ifp = ipv6_get_ifaddr(solicited_addr, dev, 1);
- if (ifp) {
- src_addr = solicited_addr;
- if (ifp->flags & IFA_F_OPTIMISTIC)
- override = 0;
- in6_ifa_put(ifp);
- } else {
- if (ipv6_dev_get_saddr(dev, daddr, &tmpaddr))
- return;
- src_addr = &tmpaddr;
- }
-
- ndisc_flow_init(&fl, NDISC_NEIGHBOUR_ADVERTISEMENT, src_addr, daddr,
+ ndisc_flow_init(&fl, icmp6h->icmp6_type, saddr, daddr,
dev->ifindex);
dst = ndisc_dst_alloc(dev, neigh, daddr, ip6_output);
@@ -469,61 +454,57 @@ static void ndisc_send_na(struct net_device *dev, struct neighbour *neigh,
if (err < 0)
return;
- if (inc_opt) {
- if (dev->addr_len)
- len += ndisc_opt_addr_space(dev);
- else
- inc_opt = 0;
- }
+ if (!dev->addr_len)
+ llinfo = 0;
+
+ len = sizeof(struct icmp6hdr) + (target ? sizeof(*target) : 0);
+ if (llinfo)
+ len += ndisc_opt_addr_space(dev);
skb = sock_alloc_send_skb(sk,
(MAX_HEADER + sizeof(struct ipv6hdr) +
len + LL_RESERVED_SPACE(dev)),
1, &err);
-
- if (skb == NULL) {
+ if (!skb) {
ND_PRINTK0(KERN_ERR
- "ICMPv6 NA: %s() failed to allocate an skb.\n",
+ "ICMPv6 ND: %s() failed to allocate an skb.\n",
__FUNCTION__);
dst_release(dst);
return;
}
skb_reserve(skb, LL_RESERVED_SPACE(dev));
- ip6_nd_hdr(sk, skb, dev, src_addr, daddr, IPPROTO_ICMPV6, len);
+ ip6_nd_hdr(sk, skb, dev, saddr, daddr, IPPROTO_ICMPV6, len);
skb->transport_header = skb->tail;
skb_put(skb, len);
- msg = (struct nd_msg *)skb_transport_header(skb);
- msg->icmph.icmp6_type = NDISC_NEIGHBOUR_ADVERTISEMENT;
- msg->icmph.icmp6_code = 0;
- msg->icmph.icmp6_cksum = 0;
+ hdr = (struct icmp6hdr *)skb_transport_header(skb);
+ memcpy(hdr, icmp6h, sizeof(*hdr));
- msg->icmph.icmp6_unused = 0;
- msg->icmph.icmp6_router = router;
- msg->icmph.icmp6_solicited = solicited;
- msg->icmph.icmp6_override = override;
-
- /* Set the target address. */
- ipv6_addr_copy(&msg->target, solicited_addr);
+ opt = skb_transport_header(skb) + sizeof(struct icmp6hdr);
+ if (target) {
+ ipv6_addr_copy((struct in6_addr *)opt, target);
+ opt += sizeof(*target);
+ }
- if (inc_opt)
- ndisc_fill_addr_option(msg->opt, ND_OPT_TARGET_LL_ADDR, dev->dev_addr,
+ if (llinfo)
+ ndisc_fill_addr_option(opt, llinfo, dev->dev_addr,
dev->addr_len, dev->type);
- /* checksum */
- msg->icmph.icmp6_cksum = csum_ipv6_magic(src_addr, daddr, len,
- IPPROTO_ICMPV6,
- csum_partial((__u8 *) msg,
- len, 0));
+ hdr->icmp6_cksum = csum_ipv6_magic(saddr, daddr, len,
+ IPPROTO_ICMPV6,
+ csum_partial((__u8 *) hdr,
+ len, 0));
skb->dst = dst;
+
idev = in6_dev_get(dst->dev);
IP6_INC_STATS(idev, IPSTATS_MIB_OUTREQUESTS);
+
err = NF_HOOK(PF_INET6, NF_IP6_LOCAL_OUT, skb, NULL, dst->dev, dst_output);
if (!err) {
- ICMP6_INC_STATS(idev, ICMP6_MIB_OUTNEIGHBORADVERTISEMENTS);
+ ICMP6_INC_STATS(idev, icmp6_mib_outnd);
ICMP6_INC_STATS(idev, ICMP6_MIB_OUTMSGS);
}
@@ -531,20 +512,48 @@ static void ndisc_send_na(struct net_device *dev, struct neighbour *neigh,
in6_dev_put(idev);
}
+static void ndisc_send_na(struct net_device *dev, struct neighbour *neigh,
+ struct in6_addr *daddr, struct in6_addr *solicited_addr,
+ int router, int solicited, int override, int inc_opt)
+{
+ struct in6_addr tmpaddr;
+ struct inet6_ifaddr *ifp;
+ struct in6_addr *src_addr;
+ struct icmp6hdr icmp6h = {
+ .icmp6_type = NDISC_NEIGHBOUR_ADVERTISEMENT,
+ };
+
+ /* for anycast or proxy, solicited_addr != src_addr */
+ ifp = ipv6_get_ifaddr(solicited_addr, dev, 1);
+ if (ifp) {
+ src_addr = solicited_addr;
+ if (ifp->flags & IFA_F_OPTIMISTIC)
+ override = 0;
+ in6_ifa_put(ifp);
+ } else {
+ if (ipv6_dev_get_saddr(dev, daddr, &tmpaddr))
+ return;
+ src_addr = &tmpaddr;
+ }
+
+ icmp6h.icmp6_router = router;
+ icmp6h.icmp6_solicited = solicited;
+ icmp6h.icmp6_override = override;
+
+ __ndisc_send(dev, neigh, daddr, src_addr,
+ &icmp6h, solicited_addr,
+ inc_opt ? ND_OPT_TARGET_LL_ADDR : 0,
+ ICMP6_MIB_OUTNEIGHBORADVERTISEMENTS);
+}
+
void ndisc_send_ns(struct net_device *dev, struct neighbour *neigh,
struct in6_addr *solicit,
struct in6_addr *daddr, struct in6_addr *saddr)
{
- struct flowi fl;
- struct dst_entry* dst;
- struct inet6_dev *idev;
- struct sock *sk = ndisc_socket->sk;
- struct sk_buff *skb;
- struct nd_msg *msg;
struct in6_addr addr_buf;
- int len;
- int err;
- int send_llinfo;
+ struct icmp6hdr icmp6h = {
+ .icmp6_type = NDISC_NEIGHBOUR_SOLICITATION,
+ };
if (saddr == NULL) {
if (ipv6_get_lladdr(dev, &addr_buf,
@@ -553,86 +562,19 @@ void ndisc_send_ns(struct net_device *dev, struct neighbour *neigh,
saddr = &addr_buf;
}
- ndisc_flow_init(&fl, NDISC_NEIGHBOUR_SOLICITATION, saddr, daddr,
- dev->ifindex);
-
- dst = ndisc_dst_alloc(dev, neigh, daddr, ip6_output);
- if (!dst)
- return;
-
- err = xfrm_lookup(&dst, &fl, NULL, 0);
- if (err < 0)
- return;
-
- len = sizeof(struct icmp6hdr) + sizeof(struct in6_addr);
- send_llinfo = dev->addr_len && !ipv6_addr_any(saddr);
- if (send_llinfo)
- len += ndisc_opt_addr_space(dev);
-
- skb = sock_alloc_send_skb(sk,
- (MAX_HEADER + sizeof(struct ipv6hdr) +
- len + LL_RESERVED_SPACE(dev)),
- 1, &err);
- if (skb == NULL) {
- ND_PRINTK0(KERN_ERR
- "ICMPv6 NA: %s() failed to allocate an skb.\n",
- __FUNCTION__);
- dst_release(dst);
- return;
- }
-
- skb_reserve(skb, LL_RESERVED_SPACE(dev));
- ip6_nd_hdr(sk, skb, dev, saddr, daddr, IPPROTO_ICMPV6, len);
-
- skb->transport_header = skb->tail;
- skb_put(skb, len);
- msg = (struct nd_msg *)skb_transport_header(skb);
- msg->icmph.icmp6_type = NDISC_NEIGHBOUR_SOLICITATION;
- msg->icmph.icmp6_code = 0;
- msg->icmph.icmp6_cksum = 0;
- msg->icmph.icmp6_unused = 0;
-
- /* Set the target address. */
- ipv6_addr_copy(&msg->target, solicit);
-
- if (send_llinfo)
- ndisc_fill_addr_option(msg->opt, ND_OPT_SOURCE_LL_ADDR, dev->dev_addr,
- dev->addr_len, dev->type);
-
- /* checksum */
- msg->icmph.icmp6_cksum = csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
- daddr, len,
- IPPROTO_ICMPV6,
- csum_partial((__u8 *) msg,
- len, 0));
- /* send it! */
- skb->dst = dst;
- idev = in6_dev_get(dst->dev);
- IP6_INC_STATS(idev, IPSTATS_MIB_OUTREQUESTS);
- err = NF_HOOK(PF_INET6, NF_IP6_LOCAL_OUT, skb, NULL, dst->dev, dst_output);
- if (!err) {
- ICMP6_INC_STATS(idev, ICMP6_MIB_OUTNEIGHBORSOLICITS);
- ICMP6_INC_STATS(idev, ICMP6_MIB_OUTMSGS);
- }
-
- if (likely(idev != NULL))
- in6_dev_put(idev);
+ __ndisc_send(dev, neigh, daddr, saddr,
+ &icmp6h, solicit,
+ !ipv6_addr_any(saddr) ? ND_OPT_SOURCE_LL_ADDR : 0,
+ ICMP6_MIB_OUTNEIGHBORSOLICITS);
}
void ndisc_send_rs(struct net_device *dev, struct in6_addr *saddr,
struct in6_addr *daddr)
{
- struct flowi fl;
- struct dst_entry* dst;
- struct inet6_dev *idev;
- struct sock *sk = ndisc_socket->sk;
- struct sk_buff *skb;
- struct icmp6hdr *hdr;
- __u8 * opt;
+ struct icmp6hdr icmp6h = {
+ .icmp6_type = NDISC_ROUTER_SOLICITATION,
+ };
int send_sllao = dev->addr_len;
- int len;
- int err;
-
#ifdef CONFIG_IPV6_OPTIMISTIC_DAD
/*
@@ -655,67 +597,10 @@ void ndisc_send_rs(struct net_device *dev, struct in6_addr *saddr,
}
}
#endif
- ndisc_flow_init(&fl, NDISC_ROUTER_SOLICITATION, saddr, daddr,
- dev->ifindex);
-
- dst = ndisc_dst_alloc(dev, NULL, daddr, ip6_output);
- if (!dst)
- return;
-
- err = xfrm_lookup(&dst, &fl, NULL, 0);
- if (err < 0)
- return;
-
- len = sizeof(struct icmp6hdr);
- if (send_sllao)
- len += ndisc_opt_addr_space(dev);
-
- skb = sock_alloc_send_skb(sk,
- (MAX_HEADER + sizeof(struct ipv6hdr) +
- len + LL_RESERVED_SPACE(dev)),
- 1, &err);
- if (skb == NULL) {
- ND_PRINTK0(KERN_ERR
- "ICMPv6 RS: %s() failed to allocate an skb.\n",
- __FUNCTION__);
- dst_release(dst);
- return;
- }
-
- skb_reserve(skb, LL_RESERVED_SPACE(dev));
- ip6_nd_hdr(sk, skb, dev, saddr, daddr, IPPROTO_ICMPV6, len);
-
- skb->transport_header = skb->tail;
- skb_put(skb, len);
- hdr = icmp6_hdr(skb);
- hdr->icmp6_type = NDISC_ROUTER_SOLICITATION;
- hdr->icmp6_code = 0;
- hdr->icmp6_cksum = 0;
- hdr->icmp6_unused = 0;
-
- opt = (u8*) (hdr + 1);
-
- if (send_sllao)
- ndisc_fill_addr_option(opt, ND_OPT_SOURCE_LL_ADDR, dev->dev_addr,
- dev->addr_len, dev->type);
-
- /* checksum */
- hdr->icmp6_cksum = csum_ipv6_magic(&ipv6_hdr(skb)->saddr, daddr, len,
- IPPROTO_ICMPV6,
- csum_partial((__u8 *) hdr, len, 0));
-
- /* send it! */
- skb->dst = dst;
- idev = in6_dev_get(dst->dev);
- IP6_INC_STATS(idev, IPSTATS_MIB_OUTREQUESTS);
- err = NF_HOOK(PF_INET6, NF_IP6_LOCAL_OUT, skb, NULL, dst->dev, dst_output);
- if (!err) {
- ICMP6_INC_STATS(idev, ICMP6_MIB_OUTROUTERSOLICITS);
- ICMP6_INC_STATS(idev, ICMP6_MIB_OUTMSGS);
- }
-
- if (likely(idev != NULL))
- in6_dev_put(idev);
+ __ndisc_send(dev, NULL, daddr, saddr,
+ &icmp6h, NULL,
+ send_sllao ? ND_OPT_SOURCE_LL_ADDR : 0,
+ ICMP6_MIB_OUTROUTERSOLICITS);
}
---
--
YOSHIFUJI Hideaki @ USAGI Project <yoshfuji@...ux-ipv6.org>
GPG-FP : 9022 65EB 1ECF 3AD1 0BDF 80D8 4807 F894 E062 0EEA
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