Commit e773e4fa authored by Brian Haley's avatar Brian Haley Committed by David S. Miller
Browse files

[IPV6]: Add v4mapped address inline



Add v4mapped address inline to avoid calls to ipv6_addr_type().
Signed-off-by: default avatarBrian Haley <brian.haley@hp.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 6f4fc423
......@@ -377,6 +377,12 @@ static inline int ipv6_addr_any(const struct in6_addr *a)
a->s6_addr32[2] | a->s6_addr32[3] ) == 0);
}
static inline int ipv6_addr_v4mapped(const struct in6_addr *a)
{
return ((a->s6_addr32[0] | a->s6_addr32[1]) == 0 &&
a->s6_addr32[2] == htonl(0x0000ffff));
}
/*
* find the first different bit between two addresses
* length of address must be a multiple of 32bits
......
......@@ -249,7 +249,7 @@ static int do_ipv6_setsockopt(struct sock *sk, int level, int optname,
}
if (ipv6_only_sock(sk) ||
!(ipv6_addr_type(&np->daddr) & IPV6_ADDR_MAPPED)) {
!ipv6_addr_v4mapped(&np->daddr)) {
retv = -EADDRNOTAVAIL;
break;
}
......
......@@ -697,7 +697,7 @@ static int tcp_v6_parse_md5_keys (struct sock *sk, char __user *optval,
if (!cmd.tcpm_keylen) {
if (!tcp_sk(sk)->md5sig_info)
return -ENOENT;
if (ipv6_addr_type(&sin6->sin6_addr) & IPV6_ADDR_MAPPED)
if (ipv6_addr_v4mapped(&sin6->sin6_addr))
return tcp_v4_md5_do_del(sk, sin6->sin6_addr.s6_addr32[3]);
return tcp_v6_md5_do_del(sk, &sin6->sin6_addr);
}
......@@ -720,7 +720,7 @@ static int tcp_v6_parse_md5_keys (struct sock *sk, char __user *optval,
newkey = kmemdup(cmd.tcpm_key, cmd.tcpm_keylen, GFP_KERNEL);
if (!newkey)
return -ENOMEM;
if (ipv6_addr_type(&sin6->sin6_addr) & IPV6_ADDR_MAPPED) {
if (ipv6_addr_v4mapped(&sin6->sin6_addr)) {
return tcp_v4_md5_do_add(sk, sin6->sin6_addr.s6_addr32[3],
newkey, cmd.tcpm_keylen);
}
......
......@@ -612,7 +612,7 @@ int udpv6_sendmsg(struct kiocb *iocb, struct sock *sk,
daddr = NULL;
if (daddr) {
if (ipv6_addr_type(daddr) == IPV6_ADDR_MAPPED) {
if (ipv6_addr_v4mapped(daddr)) {
struct sockaddr_in sin;
sin.sin_family = AF_INET;
sin.sin_port = sin6 ? sin6->sin6_port : inet->dport;
......
......@@ -493,7 +493,7 @@ static int sctp_v6_cmp_addr(const union sctp_addr *addr1,
if (addr1->sa.sa_family != addr2->sa.sa_family) {
if (addr1->sa.sa_family == AF_INET &&
addr2->sa.sa_family == AF_INET6 &&
IPV6_ADDR_MAPPED == ipv6_addr_type(&addr2->v6.sin6_addr)) {
ipv6_addr_v4mapped(&addr2->v6.sin6_addr)) {
if (addr2->v6.sin6_port == addr1->v4.sin_port &&
addr2->v6.sin6_addr.s6_addr32[3] ==
addr1->v4.sin_addr.s_addr)
......@@ -501,7 +501,7 @@ static int sctp_v6_cmp_addr(const union sctp_addr *addr1,
}
if (addr2->sa.sa_family == AF_INET &&
addr1->sa.sa_family == AF_INET6 &&
IPV6_ADDR_MAPPED == ipv6_addr_type(&addr1->v6.sin6_addr)) {
ipv6_addr_v4mapped(&addr1->v6.sin6_addr)) {
if (addr1->v6.sin6_port == addr2->v4.sin_port &&
addr1->v6.sin6_addr.s6_addr32[3] ==
addr2->v4.sin_addr.s_addr)
......
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment