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[UDP]: Fix AF-specific references in AF-agnostic code.

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__udp_lib_port_inuse() cannot make direct references to
inet_sk(sk)->rcv_saddr as that is ipv4 specific state and
this code is used by ipv6 too.

Use an operations vector to solve this, and this also paves
the way for ipv6 support for non-wild saddr hashing in UDP.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
2007-05-09 16:42:20 -07:00
parent a2af421f18
commit fc038410b4
8 changed files with 93 additions and 41 deletions
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21
net/ipv6/udp.c
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@@ -52,9 +52,28 @@
DEFINE_SNMP_STAT(struct udp_mib, udp_stats_in6) __read_mostly;
static int ipv6_rcv_saddr_any(const struct sock *sk)
{
struct ipv6_pinfo *np = inet6_sk(sk);
return ipv6_addr_any(&np->rcv_saddr);
}
static unsigned int ipv6_hash_port_and_rcv_saddr(__u16 port,
const struct sock *sk)
{
return port;
}
const struct udp_get_port_ops udp_ipv6_ops = {
.saddr_cmp = ipv6_rcv_saddr_equal,
.saddr_any = ipv6_rcv_saddr_any,
.hash_port_and_rcv_saddr = ipv6_hash_port_and_rcv_saddr,
};
static inline int udp_v6_get_port(struct sock *sk, unsigned short snum)
{
return udp_get_port(sk, snum, ipv6_rcv_saddr_equal);
return udp_get_port(sk, snum, &udp_ipv6_ops);
}
static struct sock *__udp6_lib_lookup(struct in6_addr *saddr, __be16 sport,