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Commit 848b3082 authored by Bart Van Assche's avatar Bart Van Assche Committed by Roland Dreier
Browse files

IB/srp: Export sgid to sysfs 



On an initiator system with multiple IB ports it is not yet possible
to figure out what the originating port of an SRP connection is. Hence
make the source GID available in sysfs.

Signed-off-by: default avatarBart Van Assche <bvanassche@acm.org>
Acked-by: default avatarDavid Dillow <dillowda@ornl.gov>
Signed-off-by: default avatarRoland Dreier <roland@purestorage.com>
parent a95cadb9

Documentation/ABI/stable/sysfs-driver-ib_srp

+7 −0
Original line number Diff line number Diff line
@@ -155,6 +155,13 @@ Contact: linux-rdma@vger.kernel.org 
Description:	InfiniBand service ID used for establishing communication with

		the SRP	target.



What:		/sys/class/scsi_host/host<n>/sgid

Date:		February 1, 2014

KernelVersion:	3.13

Contact:	linux-rdma@vger.kernel.org

Description:	InfiniBand GID of the source port used for communication with

		the SRP target.



What:		/sys/class/scsi_host/host<n>/zero_req_lim

Date:		September 20, 2006

KernelVersion:	2.6.18

drivers/infiniband/ulp/srp/ib_srp.c

+10 −0
Original line number Diff line number Diff line
@@ -1965,6 +1965,14 @@ static ssize_t show_pkey(struct device *dev, struct device_attribute *attr, 
	return sprintf(buf, "0x%04x\n", be16_to_cpu(target->path.pkey));

}



static ssize_t show_sgid(struct device *dev, struct device_attribute *attr,

			 char *buf)

{

	struct srp_target_port *target = host_to_target(class_to_shost(dev));



	return sprintf(buf, "%pI6\n", target->path.sgid.raw);

}



static ssize_t show_dgid(struct device *dev, struct device_attribute *attr,

			 char *buf)

{
@@ -2049,6 +2057,7 @@ static DEVICE_ATTR(id_ext, S_IRUGO, show_id_ext, NULL); 
static DEVICE_ATTR(ioc_guid,	    S_IRUGO, show_ioc_guid,	   NULL);

static DEVICE_ATTR(service_id,	    S_IRUGO, show_service_id,	   NULL);

static DEVICE_ATTR(pkey,	    S_IRUGO, show_pkey,		   NULL);

static DEVICE_ATTR(sgid,	    S_IRUGO, show_sgid,		   NULL);

static DEVICE_ATTR(dgid,	    S_IRUGO, show_dgid,		   NULL);

static DEVICE_ATTR(orig_dgid,	    S_IRUGO, show_orig_dgid,	   NULL);

static DEVICE_ATTR(req_lim,         S_IRUGO, show_req_lim,         NULL);
@@ -2065,6 +2074,7 @@ static struct device_attribute *srp_host_attrs[] = { 
	&dev_attr_ioc_guid,

	&dev_attr_service_id,

	&dev_attr_pkey,

	&dev_attr_sgid,

	&dev_attr_dgid,

	&dev_attr_orig_dgid,

	&dev_attr_req_lim,