Date: Wed, 17 Aug 2016 11:30:49 +0200 From: Hans Petter Selasky <hps@selasky.org> To: KrishnamRaju ErapaRaju <Krishna2@chelsio.com>, Alex Bowden <alex.bowden@outlook.com>, "freebsd-infiniband@freebsd.org" <freebsd-infiniband@freebsd.org> Subject: Re: Set non blocking on /dev/rdma_cm Message-ID: <516f3566-33f0-c1d6-ab2d-997290a16ae5@selasky.org> In-Reply-To: <BN4PR12MB081885693F06A5B5666629D494140@BN4PR12MB0818.namprd12.prod.outlook.com> References: <DM2PR05MB75118A2E53E97548A432608F7130@DM2PR05MB751.namprd05.prod.outlook.com> <BN4PR12MB081885693F06A5B5666629D494140@BN4PR12MB0818.namprd12.prod.outlook.com>
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On 08/17/16 09:03, KrishnamRaju ErapaRaju wrote:
> Hi Alex,
>
>
> I too faced the same issue earlier. But could not look into it/report it due to other priorities.
>
> Hans, if you have root caused it please point me to the patch, few of my apps uses O_NONBLOCK.
>
Hi Alex,
Can you try the attached patch?
cd /usr/src
cat ibcore_fionbio.diff | patch -p1
--HPS
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diff --git a/sys/ofed/drivers/infiniband/core/ucma.c b/sys/ofed/drivers/infiniband/core/ucma.c
index 56f8786..2c87db1 100644
--- a/sys/ofed/drivers/infiniband/core/ucma.c
+++ b/sys/ofed/drivers/infiniband/core/ucma.c
@@ -49,6 +49,8 @@
#include <rdma/ib_addr.h>
#include <rdma/ib.h>
+#include <sys/filio.h>
+
/* RDMA Userspace Connection Manager Access */
static unsigned int max_backlog = 1024;
@@ -1825,11 +1827,24 @@ static int ucma_close(struct inode *inode, struct file *filp)
return 0;
}
+static long
+ucma_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
+{
+
+ switch (cmd) {
+ case FIONBIO:
+ return (0);
+ default:
+ return (-ENOTTY);
+ }
+}
+
static const struct file_operations ucma_fops = {
.owner = THIS_MODULE,
.open = ucma_open,
.release = ucma_close,
.write = ucma_write,
+ .unlocked_ioctl = ucma_ioctl,
.poll = ucma_poll,
.llseek = no_llseek,
};
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