redonkable/remarkable-linux
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[PATCH] IB/addr: gid structure alignment fix

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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>
This commit is contained in:
Michael S. Tsirkin 2006-07-14 00:23:52 -07:00 committed by Linus Torvalds
parent 04c335430f
commit f0ee3404cc
2 changed files with 17 additions and 14 deletions
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21
drivers/infiniband/core/cma.c
View file

@ -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;

10
include/rdma/ib_addr.h
View file

@ -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,