From mboxrd@z Thu Jan 1 00:00:00 1970 From: Roland Dreier Subject: Re: [ofa-general] [PATCH 2.6.25] RDMA/cxgb3: Fail loopbackconnections. Date: Wed, 13 Feb 2008 07:49:16 -0800 Message-ID: References: <20080212220929.24442.76874.stgit@dell3.ogc.int> <015c01c86e21$75317210$05c8a8c0@DIEGO> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, general@lists.openfabrics.org To: Steve Wise Return-path: In-Reply-To: (Roland Dreier's message of "Wed, 13 Feb 2008 07:46:17 -0800") List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: general-bounces@lists.openfabrics.org Errors-To: general-bounces@lists.openfabrics.org List-Id: netdev.vger.kernel.org Steve, I had to update the patch adding an include and fixing the function declaration (as below)... but how much testing have you done with this?? commit 8704e9a8790cc9e394198663c1c9150c899fb9a2 Author: Steve Wise Date: Tue Feb 12 16:09:29 2008 -0600 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 Signed-off-by: Roland Dreier diff --git a/drivers/infiniband/hw/cxgb3/iwch_cm.c b/drivers/infiniband/hw/cxgb3/iwch_cm.c index e9a08fa..320f2b6 100644 --- a/drivers/infiniband/hw/cxgb3/iwch_cm.c +++ b/drivers/infiniband/hw/cxgb3/iwch_cm.c @@ -35,6 +35,7 @@ #include #include #include +#include #include #include @@ -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__);