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[SCSI] iscsi_transport: add support for net settings

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Allows user space (iscsiadm) to send down network configuration
parameters for LLD to set private network configuration on the iSCSI
adapters.

Based on patch from Lalit Chandivade.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Mike Christie 2011-07-25 13:48:37 -05:00 committed by James Bottomley
parent 5d7c20b7fa
commit 56c155b5ca
3 changed files with 91 additions and 0 deletions
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27
drivers/scsi/scsi_transport_iscsi.c
View file

@ -1557,6 +1557,30 @@ iscsi_set_path(struct iscsi_transport *transport, struct iscsi_uevent *ev)
return err;
}
static int
iscsi_set_iface_params(struct iscsi_transport *transport,
struct iscsi_uevent *ev)
{
char *data = (char *)ev + sizeof(*ev);
struct Scsi_Host *shost;
int err;
if (!transport->set_iface_param)
return -ENOSYS;
shost = scsi_host_lookup(ev->u.set_iface_params.host_no);
if (!shost) {
printk(KERN_ERR "set_iface_params could not find host no %u\n",
ev->u.set_iface_params.host_no);
return -ENODEV;
}
err = transport->set_iface_param(shost, data,
ev->u.set_iface_params.count);
scsi_host_put(shost);
return err;
}
static int
iscsi_if_recv_msg(struct sk_buff *skb, struct nlmsghdr *nlh, uint32_t *group)
{
@ -1696,6 +1720,9 @@ iscsi_if_recv_msg(struct sk_buff *skb, struct nlmsghdr *nlh, uint32_t *group)
case ISCSI_UEVENT_PATH_UPDATE:
err = iscsi_set_path(transport, ev);
break;
case ISCSI_UEVENT_SET_IFACE_PARAMS:
err = iscsi_set_iface_params(transport, ev);
break;
default:
err = -ENOSYS;
break;

63
include/scsi/iscsi_if.h
View file

@ -59,6 +59,7 @@ enum iscsi_uevent_e {
ISCSI_UEVENT_TRANSPORT_EP_CONNECT_THROUGH_HOST = UEVENT_BASE + 19,
ISCSI_UEVENT_PATH_UPDATE = UEVENT_BASE + 20,
ISCSI_UEVENT_SET_IFACE_PARAMS = UEVENT_BASE + 21,
/* up events */
ISCSI_KEVENT_RECV_PDU = KEVENT_BASE + 1,
@ -172,6 +173,10 @@ struct iscsi_uevent {
struct msg_set_path {
uint32_t host_no;
} set_path;
struct msg_set_iface_params {
uint32_t host_no;
uint32_t count;
} set_iface_params;
} u;
union {
/* messages k -> u */
@ -214,6 +219,21 @@ struct iscsi_uevent {
} r;
} __attribute__ ((aligned (sizeof(uint64_t))));
enum iscsi_param_type {
ISCSI_PARAM, /* iscsi_param (session, conn, target, LU) */
ISCSI_HOST_PARAM, /* iscsi_host_param */
ISCSI_NET_PARAM, /* iscsi_net_param */
};
struct iscsi_iface_param_info {
uint32_t iface_num; /* iface number, 0 - n */
uint32_t len; /* Actual length of the param */
uint16_t param; /* iscsi param value */
uint8_t iface_type; /* IPv4 or IPv6 */
uint8_t param_type; /* iscsi_param_type */
uint8_t value[0]; /* length sized value follows */
} __packed;
/*
* To keep the struct iscsi_uevent size the same for userspace code
* compatibility, the main structure for ISCSI_UEVENT_PATH_UPDATE and
@ -237,6 +257,49 @@ struct iscsi_path {
uint16_t pmtu;
} __attribute__ ((aligned (sizeof(uint64_t))));
/* iscsi iface enabled/disabled setting */
#define ISCSI_IFACE_DISABLE 0x01
#define ISCSI_IFACE_ENABLE 0x02
/* ipv4 bootproto */
#define ISCSI_BOOTPROTO_STATIC 0x01
#define ISCSI_BOOTPROTO_DHCP 0x02
/* ipv6 addr autoconfig type */
#define ISCSI_IPV6_AUTOCFG_DISABLE 0x01
#define ISCSI_IPV6_AUTOCFG_ND_ENABLE 0x02
#define ISCSI_IPV6_AUTOCFG_DHCPV6_ENABLE 0x03
/* ipv6 link local addr type */
#define ISCSI_IPV6_LINKLOCAL_AUTOCFG_ENABLE 0x01
#define ISCSI_IPV6_LINKLOCAL_AUTOCFG_DISABLE 0x02
/* ipv6 router addr type */
#define ISCSI_IPV6_ROUTER_AUTOCFG_ENABLE 0x01
#define ISCSI_IPV6_ROUTER_AUTOCFG_DISABLE 0x02
#define ISCSI_IFACE_TYPE_IPV4 0x01
#define ISCSI_IFACE_TYPE_IPV6 0x02
/* iSCSI network params */
enum iscsi_net_param {
ISCSI_NET_PARAM_IPV4_ADDR = 1,
ISCSI_NET_PARAM_IPV4_SUBNET = 2,
ISCSI_NET_PARAM_IPV4_GW = 3,
ISCSI_NET_PARAM_IPV4_BOOTPROTO = 4,
ISCSI_NET_PARAM_MAC = 5,
ISCSI_NET_PARAM_IPV6_LINKLOCAL = 6,
ISCSI_NET_PARAM_IPV6_ADDR = 7,
ISCSI_NET_PARAM_IPV6_ROUTER = 8,
ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG = 9,
ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG = 10,
ISCSI_NET_PARAM_IPV6_ROUTER_AUTOCFG = 11,
ISCSI_NET_PARAM_IFACE_ENABLE = 12,
ISCSI_NET_PARAM_VLAN_ID = 13,
ISCSI_NET_IFACE_TYPE = 14,
ISCSI_NET_IFACE_NAME = 15,
};
/*
* Common error codes
*/

1
include/scsi/scsi_transport_iscsi.h
View file

@ -137,6 +137,7 @@ struct iscsi_transport {
int (*tgt_dscvr) (struct Scsi_Host *shost, enum iscsi_tgt_dscvr type,
uint32_t enable, struct sockaddr *dst_addr);
int (*set_path) (struct Scsi_Host *shost, struct iscsi_path *params);
int (*set_iface_param) (struct Scsi_Host *shost, char *data, int count);
};
/*