>Number: 179999
>Category: kern
>Synopsis: Bug assigning HCA from IB to ETH
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Wed Jun 26 10:00:01 UTC 2013
>Closed-Date:
>Last-Modified:
>Originator: Shahar Klein
>Release: 9.1
>Organization:
Mellanox
>Environment:
FreeBSD alf10 9.1-RELEASE FreeBSD 9.1-RELEASE #0 r243825: Tue Dec 4 09:23:10
UTC 2012 r...@farrell.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC amd64
>Description:
The Mellanox HCA ConnectX3 can work in IB mode or ETH mode. It comes defauled
to IB and assigning to ETH is done via sysctl:
sys.device.mlx4_core0.mlx4_port1 = desired_mode
This operation, when trying to assign eth mode, currently fails with:
sysctl: sys.device.mlx4_core0.mlx4_port1: Invalid argument
>How-To-Repeat:
sys.device.mlx4_core0.mlx4_port1 = eth
>Fix:
diff -ur sysA/ofed/drivers/net/mlx4/main.c sysB/ofed/drivers/net/mlx4/main.c
--- sysA/ofed/drivers/net/mlx4/main.c 2013-06-26 12:50:46.000000000 +0300
+++ sysB/ofed/drivers/net/mlx4/main.c 2013-06-26 12:51:15.000000000 +0300
@@ -479,11 +479,11 @@
int i;
int err = 0;
- if (!strcmp(buf, "ib\n"))
+ if (!strcmp(buf, "ib"))
info->tmp_type = MLX4_PORT_TYPE_IB;
- else if (!strcmp(buf, "eth\n"))
+ else if (!strcmp(buf, "eth"))
info->tmp_type = MLX4_PORT_TYPE_ETH;
- else if (!strcmp(buf, "auto\n"))
+ else if (!strcmp(buf, "auto"))
info->tmp_type = MLX4_PORT_TYPE_AUTO;
else {
mlx4_err(mdev, "%s is not supported port type\n", buf);
diff -ur sysA/ofed/include/linux/sysfs.h sysB/ofed/include/linux/sysfs.h
--- sysA/ofed/include/linux/sysfs.h 2013-06-26 12:50:47.000000000 +0300
+++ sysB/ofed/include/linux/sysfs.h 2013-06-26 12:52:24.000000000 +0300
@@ -104,7 +104,9 @@
error = SYSCTL_OUT(req, buf, len);
if (error || !req->newptr || ops->store == NULL)
goto out;
- error = SYSCTL_IN(req, buf, PAGE_SIZE);
+ len = req->newlen - req->newidx;
+ error = SYSCTL_IN(req, buf, len);
+ ((char *)buf)[len] = '\0';
if (error)
goto out;
len = ops->store(kobj, attr, buf, req->newlen);
>Release-Note:
>Audit-Trail:
>Unformatted:
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