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RDMA/cxgb3: Fail loopback connections 

The cxgb3 HW and driver don't support loopback RDMA connections.  So
fail any connection attempt where the destination address is local.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Steve Wise 2008-02-12 16:09:29 -06:00 committed by Roland Dreier
parent 7c7a9bccd2
commit 8704e9a879
1 changed files with 17 additions and 0 deletions
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17
drivers/infiniband/hw/cxgb3/iwch_cm.c
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@ -35,6 +35,7 @@
#include <linux/skbuff.h>
#include <linux/timer.h>
#include <linux/notifier.h>
#include <linux/inetdevice.h>
#include <net/neighbour.h>
#include <net/netevent.h>
@ -1784,6 +1785,17 @@ err:
return err;
}
static int is_loopback_dst(struct iw_cm_id *cm_id)
{
struct net_device *dev;
dev = ip_dev_find(&init_net, cm_id->remote_addr.sin_addr.s_addr);
if (!dev)
return 0;
dev_put(dev);
return 1;
}
int iwch_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
{
int err = 0;
@ -1791,6 +1803,11 @@ int iwch_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
struct iwch_ep *ep;
struct rtable *rt;
if (is_loopback_dst(cm_id)) {
err = -ENOSYS;
goto out;
}
ep = alloc_ep(sizeof(*ep), GFP_KERNEL);
if (!ep) {
printk(KERN_ERR MOD "%s - cannot alloc ep.\n", __FUNCTION__);