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authorMichael S. Tsirkin <mst@mellanox.co.il>2006-07-14 00:23:52 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-07-14 21:53:50 -0700
commitf0ee3404cce2c45f8b95b341dd6311cd92e5cee0 (patch)
treefc4a88c79310ea1937c6ede58c0a06f5b056078a
parent04c335430f6d9f9088c852bc05a3a0c8baa921c4 (diff)
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[PATCH] IB/addr: gid structure alignment fix
The device address contains unsigned character arrays, which contain raw GID addresses. The GIDs may not be naturally aligned, so do not cast them to structures or unions. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il> Cc: Roland Dreier <rolandd@cisco.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
-rw-r--r--drivers/infiniband/core/cma.c21
-rw-r--r--include/rdma/ib_addr.h10
2 files changed, 17 insertions, 14 deletions
diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c
index 863f64befc7..c2cba734c5c 100644
--- a/drivers/infiniband/core/cma.c
+++ b/drivers/infiniband/core/cma.c
@@ -262,14 +262,14 @@ static void cma_detach_from_dev(struct rdma_id_private *id_priv)
static int cma_acquire_ib_dev(struct rdma_id_private *id_priv)
{
struct cma_device *cma_dev;
- union ib_gid *gid;
+ union ib_gid gid;
int ret = -ENODEV;
- gid = ib_addr_get_sgid(&id_priv->id.route.addr.dev_addr);
+ ib_addr_get_sgid(&id_priv->id.route.addr.dev_addr, &gid),
mutex_lock(&lock);
list_for_each_entry(cma_dev, &dev_list, list) {
- ret = ib_find_cached_gid(cma_dev->device, gid,
+ ret = ib_find_cached_gid(cma_dev->device, &gid,
&id_priv->id.port_num, NULL);
if (!ret) {
cma_attach_to_dev(id_priv, cma_dev);
@@ -1134,8 +1134,8 @@ static int cma_query_ib_route(struct rdma_id_private *id_priv, int timeout_ms,
struct ib_sa_path_rec path_rec;
memset(&path_rec, 0, sizeof path_rec);
- path_rec.sgid = *ib_addr_get_sgid(addr);
- path_rec.dgid = *ib_addr_get_dgid(addr);
+ ib_addr_get_sgid(addr, &path_rec.sgid);
+ ib_addr_get_dgid(addr, &path_rec.dgid);
path_rec.pkey = cpu_to_be16(ib_addr_get_pkey(addr));
path_rec.numb_path = 1;
@@ -1263,7 +1263,7 @@ static int cma_bind_loopback(struct rdma_id_private *id_priv)
{
struct cma_device *cma_dev;
struct ib_port_attr port_attr;
- union ib_gid *gid;
+ union ib_gid gid;
u16 pkey;
int ret;
u8 p;
@@ -1284,8 +1284,7 @@ static int cma_bind_loopback(struct rdma_id_private *id_priv)
}
port_found:
- gid = ib_addr_get_sgid(&id_priv->id.route.addr.dev_addr);
- ret = ib_get_cached_gid(cma_dev->device, p, 0, gid);
+ ret = ib_get_cached_gid(cma_dev->device, p, 0, &gid);
if (ret)
goto out;
@@ -1293,6 +1292,7 @@ port_found:
if (ret)
goto out;
+ ib_addr_set_sgid(&id_priv->id.route.addr.dev_addr, &gid);
ib_addr_set_pkey(&id_priv->id.route.addr.dev_addr, pkey);
id_priv->id.port_num = p;
cma_attach_to_dev(id_priv, cma_dev);
@@ -1339,6 +1339,7 @@ static int cma_resolve_loopback(struct rdma_id_private *id_priv)
{
struct cma_work *work;
struct sockaddr_in *src_in, *dst_in;
+ union ib_gid gid;
int ret;
work = kzalloc(sizeof *work, GFP_KERNEL);
@@ -1351,8 +1352,8 @@ static int cma_resolve_loopback(struct rdma_id_private *id_priv)
goto err;
}
- ib_addr_set_dgid(&id_priv->id.route.addr.dev_addr,
- ib_addr_get_sgid(&id_priv->id.route.addr.dev_addr));
+ ib_addr_get_sgid(&id_priv->id.route.addr.dev_addr, &gid);
+ ib_addr_set_dgid(&id_priv->id.route.addr.dev_addr, &gid);
if (cma_zero_addr(&id_priv->id.route.addr.src_addr)) {
src_in = (struct sockaddr_in *)&id_priv->id.route.addr.src_addr;
diff --git a/include/rdma/ib_addr.h b/include/rdma/ib_addr.h
index fcb5ba87dcc..0ff67398928 100644
--- a/include/rdma/ib_addr.h
+++ b/include/rdma/ib_addr.h
@@ -89,9 +89,10 @@ static inline void ib_addr_set_pkey(struct rdma_dev_addr *dev_addr, u16 pkey)
dev_addr->broadcast[9] = (unsigned char) pkey;
}
-static inline union ib_gid *ib_addr_get_sgid(struct rdma_dev_addr *dev_addr)
+static inline void ib_addr_get_sgid(struct rdma_dev_addr *dev_addr,
+ union ib_gid *gid)
{
- return (union ib_gid *) (dev_addr->src_dev_addr + 4);
+ memcpy(gid, dev_addr->src_dev_addr + 4, sizeof *gid);
}
static inline void ib_addr_set_sgid(struct rdma_dev_addr *dev_addr,
@@ -100,9 +101,10 @@ static inline void ib_addr_set_sgid(struct rdma_dev_addr *dev_addr,
memcpy(dev_addr->src_dev_addr + 4, gid, sizeof *gid);
}
-static inline union ib_gid *ib_addr_get_dgid(struct rdma_dev_addr *dev_addr)
+static inline void ib_addr_get_dgid(struct rdma_dev_addr *dev_addr,
+ union ib_gid *gid)
{
- return (union ib_gid *) (dev_addr->dst_dev_addr + 4);
+ memcpy(gid, dev_addr->dst_dev_addr + 4, sizeof *gid);
}
static inline void ib_addr_set_dgid(struct rdma_dev_addr *dev_addr,