[SCSI] iscsi_transport: add support for net settings

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>

1 files changed, 63 insertions, 0 deletions

diff --git a/include/scsi/iscsi_if.h b/include/scsi/iscsi_if.h
index ddb04568a509..e93831e87878 100644
--- a/include/scsi/iscsi_if.h
+++ b/include/scsi/iscsi_if.h
@@ -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
  */