Commit 2c4ab624 authored by Roland Dreier's avatar Roland Dreier
Browse files

RDMA/addr: Fix build breakage when IPv6 is disabled

Commit 38617c64

 ("RDMA/addr: Add support for translating IPv6
addresses") broke the build when CONFIG_IPV6=n, because the ib_addr
module unconditionally attempted to call ipv6_chk_addr() and other
IPv6 functions that are not defined when IPv6 is disabled.  Fix this
by only building IPv6 support if CONFIG_IPV6 is turned on, and
add a Kconfig dependency to prevent the ib_addr code from being built
in when IPv6 is built modular.
Signed-off-by: default avatarRoland Dreier <rolandd@cisco.com>
parent 541ef5cb
......@@ -37,6 +37,7 @@ config INFINIBAND_USER_MEM
config INFINIBAND_ADDR_TRANS
bool
depends on INET
depends on !(INFINIBAND = y && IPV6 = m)
default y
source "drivers/infiniband/hw/mthca/Kconfig"
......
......@@ -128,6 +128,8 @@ int rdma_translate_ip(struct sockaddr *addr, struct rdma_dev_addr *dev_addr)
ret = rdma_copy_addr(dev_addr, dev, NULL);
dev_put(dev);
break;
#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
case AF_INET6:
for_each_netdev(&init_net, dev) {
if (ipv6_chk_addr(&init_net,
......@@ -138,8 +140,7 @@ int rdma_translate_ip(struct sockaddr *addr, struct rdma_dev_addr *dev_addr)
}
}
break;
default:
break;
#endif
}
return ret;
}
......@@ -179,10 +180,11 @@ static void addr_send_arp(struct sockaddr *dst_in)
{
struct rtable *rt;
struct flowi fl;
struct dst_entry *dst;
memset(&fl, 0, sizeof fl);
if (dst_in->sa_family == AF_INET) {
switch (dst_in->sa_family) {
case AF_INET:
fl.nl_u.ip4_u.daddr =
((struct sockaddr_in *) dst_in)->sin_addr.s_addr;
......@@ -191,8 +193,13 @@ static void addr_send_arp(struct sockaddr *dst_in)
neigh_event_send(rt->u.dst.neighbour, NULL);
ip_rt_put(rt);
break;
#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
case AF_INET6:
{
struct dst_entry *dst;
} else {
fl.nl_u.ip6_u.daddr =
((struct sockaddr_in6 *) dst_in)->sin6_addr;
......@@ -202,6 +209,9 @@ static void addr_send_arp(struct sockaddr *dst_in)
neigh_event_send(dst->neighbour, NULL);
dst_release(dst);
break;
}
#endif
}
}
......@@ -254,6 +264,7 @@ static int addr4_resolve_remote(struct sockaddr_in *src_in,
return ret;
}
#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
static int addr6_resolve_remote(struct sockaddr_in6 *src_in,
struct sockaddr_in6 *dst_in,
struct rdma_dev_addr *addr)
......@@ -282,6 +293,14 @@ static int addr6_resolve_remote(struct sockaddr_in6 *src_in,
dst_release(dst);
return ret;
}
#else
static int addr6_resolve_remote(struct sockaddr_in6 *src_in,
struct sockaddr_in6 *dst_in,
struct rdma_dev_addr *addr)
{
return -EADDRNOTAVAIL;
}
#endif
static int addr_resolve_remote(struct sockaddr *src_in,
struct sockaddr *dst_in,
......@@ -340,7 +359,9 @@ static int addr_resolve_local(struct sockaddr *src_in,
struct net_device *dev;
int ret;
if (dst_in->sa_family == AF_INET) {
switch (dst_in->sa_family) {
case AF_INET:
{
__be32 src_ip = ((struct sockaddr_in *) src_in)->sin_addr.s_addr;
__be32 dst_ip = ((struct sockaddr_in *) dst_in)->sin_addr.s_addr;
......@@ -362,7 +383,12 @@ static int addr_resolve_local(struct sockaddr *src_in,
memcpy(addr->dst_dev_addr, dev->dev_addr, MAX_ADDR_LEN);
}
dev_put(dev);
} else {
break;
}
#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
case AF_INET6:
{
struct in6_addr *a;
for_each_netdev(&init_net, dev)
......@@ -390,6 +416,13 @@ static int addr_resolve_local(struct sockaddr *src_in,
if (!ret)
memcpy(addr->dst_dev_addr, dev->dev_addr, MAX_ADDR_LEN);
}
break;
}
#endif
default:
ret = -EADDRNOTAVAIL;
break;
}
return ret;
......
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