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Date: Tue, 18 Dec 2012 19:56:10 +0900
From: YOSHIFUJI Hideaki <yoshfuji@...ux-ipv6.org>
To: davem@...emloft.net, netdev@...r.kernel.org
CC: yoshfuji@...ux-ipv6.org
Subject: [GIT PULL net-next 14/17] ndisc: Concentrate ndisc_send() on sending
message.
Build NDISC message outside ndisc_send() and concentrate the
function sending sk_buff with given destination/source.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@...ux-ipv6.org>
---
net/ipv6/ndisc.c | 51 ++++++++++++++++++++++++++++++---------------------
1 file changed, 30 insertions(+), 21 deletions(-)
diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c
index c0937d3..c974d9d 100644
--- a/net/ipv6/ndisc.c
+++ b/net/ipv6/ndisc.c
@@ -488,26 +488,20 @@ static void __ndisc_send(struct sk_buff *skb, struct dst_entry *dst,
/*
* Send a Neighbour Discover packet
*/
-static void ndisc_send(struct net_device *dev,
+static void ndisc_send(struct sk_buff *skb,
struct neighbour *neigh,
const struct in6_addr *daddr,
- const struct in6_addr *saddr,
- struct icmp6hdr *icmp6h, const struct in6_addr *target,
- int llinfo)
+ const struct in6_addr *saddr)
{
struct flowi6 fl6;
struct dst_entry *dst;
- struct net *net = dev_net(dev);
+ struct net *net = dev_net(skb->dev);
struct sock *sk = net->ipv6.ndisc_sk;
- struct sk_buff *skb;
+ struct icmp6hdr *icmp6h = icmp6_hdr(skb);
u8 type = icmp6h->icmp6_type;
- skb = ndisc_build_skb(dev, daddr, saddr, icmp6h, target, llinfo);
- if (!skb)
- return;
-
- icmpv6_flow_init(sk, &fl6, type, saddr, daddr, dev->ifindex);
- dst = icmp6_dst_alloc(dev, neigh, &fl6);
+ icmpv6_flow_init(sk, &fl6, type, saddr, daddr, skb->dev->ifindex);
+ dst = icmp6_dst_alloc(skb->dev, neigh, &fl6);
if (IS_ERR(dst)) {
kfree_skb(skb);
return;
@@ -527,6 +521,7 @@ static void ndisc_send_na(struct net_device *dev, struct neighbour *neigh,
struct icmp6hdr icmp6h = {
.icmp6_type = NDISC_NEIGHBOUR_ADVERTISEMENT,
};
+ struct sk_buff *skb;
/* for anycast or proxy, solicited_addr != src_addr */
ifp = ipv6_get_ifaddr(dev_net(dev), solicited_addr, dev, 1);
@@ -548,9 +543,13 @@ static void ndisc_send_na(struct net_device *dev, struct neighbour *neigh,
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);
+ skb = ndisc_build_skb(dev, daddr, src_addr,
+ &icmp6h, solicited_addr,
+ inc_opt ? ND_OPT_TARGET_LL_ADDR : 0);
+ if (!skb)
+ return;
+
+ ndisc_send(skb, neigh, daddr, src_addr);
}
static void ndisc_send_unsol_na(struct net_device *dev)
@@ -582,6 +581,7 @@ void ndisc_send_ns(struct net_device *dev, struct neighbour *neigh,
struct icmp6hdr icmp6h = {
.icmp6_type = NDISC_NEIGHBOUR_SOLICITATION,
};
+ struct sk_buff *skb;
if (saddr == NULL) {
if (ipv6_get_lladdr(dev, &addr_buf,
@@ -590,9 +590,13 @@ void ndisc_send_ns(struct net_device *dev, struct neighbour *neigh,
saddr = &addr_buf;
}
- ndisc_send(dev, neigh, daddr, saddr,
- &icmp6h, solicit,
- !ipv6_addr_any(saddr) ? ND_OPT_SOURCE_LL_ADDR : 0);
+ skb = ndisc_build_skb(dev, daddr, saddr,
+ &icmp6h, solicit,
+ !ipv6_addr_any(saddr) ? ND_OPT_SOURCE_LL_ADDR : 0);
+ if (!skb)
+ return;
+
+ ndisc_send(skb, neigh, daddr, saddr);
}
void ndisc_send_rs(struct net_device *dev, const struct in6_addr *saddr,
@@ -602,6 +606,7 @@ void ndisc_send_rs(struct net_device *dev, const struct in6_addr *saddr,
.icmp6_type = NDISC_ROUTER_SOLICITATION,
};
int send_sllao = dev->addr_len;
+ struct sk_buff *skb;
#ifdef CONFIG_IPV6_OPTIMISTIC_DAD
/*
@@ -625,9 +630,13 @@ void ndisc_send_rs(struct net_device *dev, const struct in6_addr *saddr,
}
}
#endif
- ndisc_send(dev, NULL, daddr, saddr,
- &icmp6h, NULL,
- send_sllao ? ND_OPT_SOURCE_LL_ADDR : 0);
+ skb = ndisc_build_skb(dev, daddr, saddr,
+ &icmp6h, NULL,
+ send_sllao ? ND_OPT_SOURCE_LL_ADDR : 0);
+ if (!skb)
+ return;
+
+ ndisc_send(skb, NULL, daddr, saddr);
}
--
1.7.9.5
--
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