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Commit 1d9bf13a authored by Mike Christie's avatar Mike Christie Committed by James Bottomley
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[SCSI] iscsi class: add iscsi host set param event 



The iscsi class uses the set_param event to set session
and connection params. This patch adds a set_host_param
so we can set host level values.

Signed-off-by: default avatarMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: default avatarJames Bottomley <James.Bottomley@SteelEye.com>
parent 2174a04e

drivers/scsi/scsi_transport_iscsi.c

+28 −1
Original line number Diff line number Diff line
@@ -967,6 +967,30 @@ iscsi_tgt_dscvr(struct iscsi_transport *transport, 
	return err;

}



static int

iscsi_set_host_param(struct iscsi_transport *transport,

		     struct iscsi_uevent *ev)

{

	char *data = (char*)ev + sizeof(*ev);

	struct Scsi_Host *shost;

	int err;



	if (!transport->set_host_param)

		return -ENOSYS;



	shost = scsi_host_lookup(ev->u.set_host_param.host_no);

	if (IS_ERR(shost)) {

		printk(KERN_ERR "set_host_param could not find host no %u\n",

		       ev->u.set_host_param.host_no);

		return -ENODEV;

	}



	err = transport->set_host_param(shost, ev->u.set_host_param.param,

					data, ev->u.set_host_param.len);

	scsi_host_put(shost);

	return err;

}



static int

iscsi_if_recv_msg(struct sk_buff *skb, struct nlmsghdr *nlh)

{
@@ -1058,8 +1082,11 @@ iscsi_if_recv_msg(struct sk_buff *skb, struct nlmsghdr *nlh) 
	case ISCSI_UEVENT_TGT_DSCVR:

		err = iscsi_tgt_dscvr(transport, ev);

		break;

	case ISCSI_UEVENT_SET_HOST_PARAM:

		err = iscsi_set_host_param(transport, ev);

		break;

	default:

		err = -EINVAL;

		err = -ENOSYS;

		break;

	}

include/scsi/iscsi_if.h

+6 −0
Original line number Diff line number Diff line
@@ -48,6 +48,7 @@ enum iscsi_uevent_e { 
	ISCSI_UEVENT_TRANSPORT_EP_DISCONNECT	= UEVENT_BASE + 14,



	ISCSI_UEVENT_TGT_DSCVR		= UEVENT_BASE + 15,

	ISCSI_UEVENT_SET_HOST_PARAM	= UEVENT_BASE + 16,



	/* up events */

	ISCSI_KEVENT_RECV_PDU		= KEVENT_BASE + 1,
@@ -136,6 +137,11 @@ struct iscsi_uevent { 
			 */

			uint32_t	enable;

		} tgt_dscvr;

		struct msg_set_host_param {

			uint32_t	host_no;

			uint32_t	param; /* enum iscsi_host_param */

			uint32_t	len;

		} set_host_param;

	} u;

	union {

		/* messages k -> u */

include/scsi/scsi_transport_iscsi.h

+3 −0
Original line number Diff line number Diff line
@@ -108,6 +108,9 @@ struct iscsi_transport { 
				  enum iscsi_param param, char *buf);

	int (*get_host_param) (struct Scsi_Host *shost,

				enum iscsi_host_param param, char *buf);

	int (*set_host_param) (struct Scsi_Host *shost,

			       enum iscsi_host_param param, char *buf,

			       int buflen);

	int (*send_pdu) (struct iscsi_cls_conn *conn, struct iscsi_hdr *hdr,

			 char *data, uint32_t data_size);

	void (*get_stats) (struct iscsi_cls_conn *conn,