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authorHefty, Sean <sean.hefty@intel.com>2011-05-10 09:06:10 +0400
committerRoland Dreier <roland@purestorage.com>2011-05-10 09:06:10 +0400
commit43b752daae9445a3b2b075a236840d801fce1593 (patch)
tree0fb5fabb3bebcbc707a9b1ab6f4d53f5e7fe2cf3 /drivers/infiniband/core
parent693d92a1bbc9e42681c42ed190bd42b636ca876f (diff)
downloadlinux-43b752daae9445a3b2b075a236840d801fce1593.tar.xz
RDMA/cma: Fix handling of IPv6 addressing in cma_use_port
cma_use_port() assumes that the sockaddr is an IPv4 address. Since IPv6 addressing is supported (and also to support other address families) make the code more generic in its address handling. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
Diffstat (limited to 'drivers/infiniband/core')
-rw-r--r--drivers/infiniband/core/cma.c29
1 files changed, 22 insertions, 7 deletions
diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c
index 5ed9d25d021a..eff5e46f005c 100644
--- a/drivers/infiniband/core/cma.c
+++ b/drivers/infiniband/core/cma.c
@@ -712,6 +712,21 @@ static inline int cma_any_addr(struct sockaddr *addr)
return cma_zero_addr(addr) || cma_loopback_addr(addr);
}
+static int cma_addr_cmp(struct sockaddr *src, struct sockaddr *dst)
+{
+ if (src->sa_family != dst->sa_family)
+ return -1;
+
+ switch (src->sa_family) {
+ case AF_INET:
+ return ((struct sockaddr_in *) src)->sin_addr.s_addr !=
+ ((struct sockaddr_in *) dst)->sin_addr.s_addr;
+ default:
+ return ipv6_addr_cmp(&((struct sockaddr_in6 *) src)->sin6_addr,
+ &((struct sockaddr_in6 *) dst)->sin6_addr);
+ }
+}
+
static inline __be16 cma_port(struct sockaddr *addr)
{
if (addr->sa_family == AF_INET)
@@ -2168,13 +2183,13 @@ retry:
static int cma_use_port(struct idr *ps, struct rdma_id_private *id_priv)
{
struct rdma_id_private *cur_id;
- struct sockaddr_in *sin, *cur_sin;
+ struct sockaddr *addr, *cur_addr;
struct rdma_bind_list *bind_list;
struct hlist_node *node;
unsigned short snum;
- sin = (struct sockaddr_in *) &id_priv->id.route.addr.src_addr;
- snum = ntohs(sin->sin_port);
+ addr = (struct sockaddr *) &id_priv->id.route.addr.src_addr;
+ snum = ntohs(cma_port(addr));
if (snum < PROT_SOCK && !capable(CAP_NET_BIND_SERVICE))
return -EACCES;
@@ -2186,15 +2201,15 @@ static int cma_use_port(struct idr *ps, struct rdma_id_private *id_priv)
* We don't support binding to any address if anyone is bound to
* a specific address on the same port.
*/
- if (cma_any_addr((struct sockaddr *) &id_priv->id.route.addr.src_addr))
+ if (cma_any_addr(addr))
return -EADDRNOTAVAIL;
hlist_for_each_entry(cur_id, node, &bind_list->owners, node) {
- if (cma_any_addr((struct sockaddr *) &cur_id->id.route.addr.src_addr))
+ cur_addr = (struct sockaddr *) &cur_id->id.route.addr.src_addr;
+ if (cma_any_addr(cur_addr))
return -EADDRNOTAVAIL;
- cur_sin = (struct sockaddr_in *) &cur_id->id.route.addr.src_addr;
- if (sin->sin_addr.s_addr == cur_sin->sin_addr.s_addr)
+ if (!cma_addr_cmp(addr, cur_addr))
return -EADDRINUSE;
}