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ndisc: Break down __ndisc_send().

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Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
YOSHIFUJI Hideaki / 吉藤英明 2013-01-21 06:49:13 +00:00 • committed by David S. Miller
parent 7b3d9b06d8
commit b44b5f4ae9
1 changed files with 21 additions and 24 deletions
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45
net/ipv6/ndisc.c
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@ -503,29 +503,12 @@ static void ndisc_send_skb(struct sk_buff *skb,
rcu_read_unlock(); rcu_read_unlock();
} }
/*
* Send a Neighbour Discover packet
*/
static void __ndisc_send(struct net_device *dev,
const struct in6_addr *daddr,
const struct in6_addr *saddr,
struct icmp6hdr *icmp6h, const struct in6_addr *target,
int llinfo)
{
struct sk_buff *skb;
skb = ndisc_build_skb(dev, daddr, saddr, icmp6h, target, llinfo);
if (!skb)
return;
ndisc_send_skb(skb, daddr, saddr);
}
static void ndisc_send_na(struct net_device *dev, struct neighbour *neigh, static void ndisc_send_na(struct net_device *dev, struct neighbour *neigh,
const struct in6_addr *daddr, const struct in6_addr *daddr,
const struct in6_addr *solicited_addr, const struct in6_addr *solicited_addr,
bool router, bool solicited, bool override, bool inc_opt) bool router, bool solicited, bool override, bool inc_opt)
{ {
struct sk_buff *skb;
struct in6_addr tmpaddr; struct in6_addr tmpaddr;
struct inet6_ifaddr *ifp; struct inet6_ifaddr *ifp;
const struct in6_addr *src_addr; const struct in6_addr *src_addr;
@ -553,8 +536,12 @@ static void ndisc_send_na(struct net_device *dev, struct neighbour *neigh,
icmp6h.icmp6_solicited = solicited; icmp6h.icmp6_solicited = solicited;
icmp6h.icmp6_override = override; icmp6h.icmp6_override = override;
__ndisc_send(dev, daddr, src_addr, &icmp6h, solicited_addr, skb = ndisc_build_skb(dev, daddr, src_addr, &icmp6h, solicited_addr,
inc_opt ? ND_OPT_TARGET_LL_ADDR : 0); inc_opt ? ND_OPT_TARGET_LL_ADDR : 0);
if (!skb)
return;
ndisc_send_skb(skb, daddr, src_addr);
} }
static void ndisc_send_unsol_na(struct net_device *dev) static void ndisc_send_unsol_na(struct net_device *dev)
@ -582,6 +569,7 @@ void ndisc_send_ns(struct net_device *dev, struct neighbour *neigh,
const struct in6_addr *solicit, const struct in6_addr *solicit,
const struct in6_addr *daddr, const struct in6_addr *saddr) const struct in6_addr *daddr, const struct in6_addr *saddr)
{ {
struct sk_buff *skb;
struct in6_addr addr_buf; struct in6_addr addr_buf;
struct icmp6hdr icmp6h = { struct icmp6hdr icmp6h = {
.icmp6_type = NDISC_NEIGHBOUR_SOLICITATION, .icmp6_type = NDISC_NEIGHBOUR_SOLICITATION,
@ -594,13 +582,18 @@ void ndisc_send_ns(struct net_device *dev, struct neighbour *neigh,
saddr = &addr_buf; saddr = &addr_buf;
} }
__ndisc_send(dev, daddr, saddr, &icmp6h, solicit, skb = ndisc_build_skb(dev, daddr, saddr, &icmp6h, solicit,
!ipv6_addr_any(saddr) ? ND_OPT_SOURCE_LL_ADDR : 0); !ipv6_addr_any(saddr) ? ND_OPT_SOURCE_LL_ADDR : 0);
if (!skb)
return;
ndisc_send_skb(skb, daddr, saddr);
} }
void ndisc_send_rs(struct net_device *dev, const struct in6_addr *saddr, void ndisc_send_rs(struct net_device *dev, const struct in6_addr *saddr,
const struct in6_addr *daddr) const struct in6_addr *daddr)
{ {
struct sk_buff *skb;
struct icmp6hdr icmp6h = { struct icmp6hdr icmp6h = {
.icmp6_type = NDISC_ROUTER_SOLICITATION, .icmp6_type = NDISC_ROUTER_SOLICITATION,
}; };
@ -628,8 +621,12 @@ void ndisc_send_rs(struct net_device *dev, const struct in6_addr *saddr,
} }
} }
#endif #endif
__ndisc_send(dev, daddr, saddr, &icmp6h, NULL, skb = ndisc_build_skb(dev, daddr, saddr, &icmp6h, NULL,
send_sllao ? ND_OPT_SOURCE_LL_ADDR : 0); send_sllao ? ND_OPT_SOURCE_LL_ADDR : 0);
if (!skb)
return;
ndisc_send_skb(skb, daddr, saddr);
} }