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Date: Thu, 23 Apr 2009 17:22:42 -0700
From: "Michael Chan" <mchan@...adcom.com>
To: davem@...emloft.net, michaelc@...wisc.edu
cc: anilgv@...adcom.com, netdev@...r.kernel.org,
open-iscsi@...glegroups.com
Subject: [PATCH 3/4] iscsi class, libiscsi: Add net config.
Add ISCSI_NETLINK messages to set/get iSCSI network parameters and
vendor specific information.
Signed-off-by: Anil Veerabhadrappa <anilgv@...adcom.com>
Signed-off-by: Michael Chan <mchan@...adcom.com>
Signed-off-by: Mike Christie <michaelc@...wisc.edu>
---
drivers/scsi/scsi_transport_iscsi.c | 87 ++++++++++++++++++++++++++++++++++-
include/scsi/iscsi_if.h | 45 ++++++++++++++++++
include/scsi/scsi_transport_iscsi.h | 58 +++++++++++++++++++++++
3 files changed, 188 insertions(+), 2 deletions(-)
diff --git a/drivers/scsi/scsi_transport_iscsi.c b/drivers/scsi/scsi_transport_iscsi.c
index 0947954..925f9b0 100644
--- a/drivers/scsi/scsi_transport_iscsi.c
+++ b/drivers/scsi/scsi_transport_iscsi.c
@@ -995,6 +995,36 @@ int iscsi_recv_pdu(struct iscsi_cls_conn *conn, struct iscsi_hdr *hdr,
}
EXPORT_SYMBOL_GPL(iscsi_recv_pdu);
+
+extern int iscsi_vendor_priv_mesg(struct Scsi_Host *shost, uint16_t priv_op,
+ char *data, uint16_t data_size)
+{
+ struct nlmsghdr *nlh;
+ struct sk_buff *skb;
+ struct iscsi_uevent *ev;
+ int len = NLMSG_SPACE(sizeof(*ev) + data_size);
+
+ skb = alloc_skb(len, GFP_ATOMIC);
+ if (!skb) {
+ printk(KERN_ERR "can not deliver vendor private message:OOM\n");
+ return -ENOMEM;
+ }
+
+ nlh = __nlmsg_put(skb, 0, 0, 0, (len - sizeof(*nlh)), 0);
+ ev = NLMSG_DATA(nlh);
+ memset(ev, 0, sizeof(*ev));
+ ev->type = ISCSI_KEVENT_PRIVATE_MESG;
+ ev->r.vendor_priv.host_no = shost->host_no;
+ ev->r.vendor_priv.priv_op = priv_op;
+ ev->r.vendor_priv.mesg_size = data_size;
+
+ memcpy((char*)ev + sizeof(*ev), data, data_size);
+
+ return iscsi_broadcast_skb(skb, GFP_KERNEL);
+}
+EXPORT_SYMBOL_GPL(iscsi_vendor_priv_mesg);
+
+
void iscsi_conn_error_event(struct iscsi_cls_conn *conn, enum iscsi_err error)
{
struct nlmsghdr *nlh;
@@ -1332,7 +1362,6 @@ iscsi_tgt_dscvr(struct iscsi_transport *transport,
return -ENODEV;
}
-
dst_addr = (struct sockaddr *)((char*)ev + sizeof(*ev));
err = transport->tgt_dscvr(shost, ev->u.tgt_dscvr.type,
ev->u.tgt_dscvr.enable, dst_addr);
@@ -1364,6 +1393,52 @@ iscsi_set_host_param(struct iscsi_transport *transport,
return err;
}
+
+static int
+iscsi_set_host_net_cfg(struct iscsi_transport *transport,
+ struct iscsi_uevent *ev, int msg_type)
+{
+ char *data = (char*)ev + sizeof(*ev);
+ struct Scsi_Host *shost;
+ int err;
+
+ if (!transport->set_net_config)
+ return -ENOSYS;
+
+ shost = scsi_host_lookup(ev->u.set_net_config.host_no);
+ if (!shost) {
+ printk(KERN_ERR "set_net_config could not find host no %u\n",
+ ev->u.set_host_param.host_no);
+ return -ENODEV;
+ }
+
+ err = transport->set_net_config(shost, data, ev->u.set_net_config.len);
+ scsi_host_put(shost);
+ return err;
+}
+
+static int
+iscsi_vendor_priv_msg(struct iscsi_transport *transport,
+ struct iscsi_uevent *ev)
+{
+ struct Scsi_Host *shost;
+ int err;
+
+ shost = scsi_host_lookup(ev->u.vendor_priv.host_no);
+ if (!shost) {
+ printk(KERN_ERR "target discovery could not find host no %u\n",
+ ev->u.tgt_dscvr.host_no);
+ return -ENODEV;
+ }
+
+ err = transport->nl_priv_recv(shost, ev->u.vendor_priv.priv_op,
+ ev->u.vendor_priv.status,
+ (char *)((char*)ev + sizeof(*ev)),
+ ev->u.vendor_priv.mesg_size);
+ scsi_host_put(shost);
+ return err;
+}
+
static int
iscsi_if_recv_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
{
@@ -1383,7 +1458,8 @@ iscsi_if_recv_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
if (!try_module_get(transport->owner))
return -EINVAL;
- priv->daemon_pid = NETLINK_CREDS(skb)->pid;
+ if (nlh->nlmsg_type != ISCSI_UEVENT_PRIVATE_MESG)
+ priv->daemon_pid = NETLINK_CREDS(skb)->pid;
switch (nlh->nlmsg_type) {
case ISCSI_UEVENT_CREATE_SESSION:
@@ -1477,6 +1553,13 @@ iscsi_if_recv_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
case ISCSI_UEVENT_SET_HOST_PARAM:
err = iscsi_set_host_param(transport, ev);
break;
+ case ISCSI_UEVENT_SET_NET_CONFIG:
+ case ISCSI_UEVENT_GET_NET_CONFIG:
+ err = iscsi_set_host_net_cfg(transport, ev, nlh->nlmsg_type);
+ break;
+ case ISCSI_UEVENT_PRIVATE_MESG:
+ err = iscsi_vendor_priv_msg(transport, ev);
+ break;
default:
err = -ENOSYS;
break;
diff --git a/include/scsi/iscsi_if.h b/include/scsi/iscsi_if.h
index d0ed522..9b602fe 100644
--- a/include/scsi/iscsi_if.h
+++ b/include/scsi/iscsi_if.h
@@ -52,6 +52,10 @@ enum iscsi_uevent_e {
ISCSI_UEVENT_UNBIND_SESSION = UEVENT_BASE + 17,
ISCSI_UEVENT_CREATE_BOUND_SESSION = UEVENT_BASE + 18,
+ ISCSI_UEVENT_SET_NET_CONFIG = UEVENT_BASE + 20,
+ ISCSI_UEVENT_GET_NET_CONFIG = UEVENT_BASE + 21,
+ ISCSI_UEVENT_PRIVATE_MESG = UEVENT_BASE + 22,
+
/* up events */
ISCSI_KEVENT_RECV_PDU = KEVENT_BASE + 1,
ISCSI_KEVENT_CONN_ERROR = KEVENT_BASE + 2,
@@ -59,6 +63,8 @@ enum iscsi_uevent_e {
ISCSI_KEVENT_DESTROY_SESSION = KEVENT_BASE + 4,
ISCSI_KEVENT_UNBIND_SESSION = KEVENT_BASE + 5,
ISCSI_KEVENT_CREATE_SESSION = KEVENT_BASE + 6,
+ ISCSI_KEVENT_NET_CONFIG = KEVENT_BASE + 7,
+ ISCSI_KEVENT_PRIVATE_MESG = KEVENT_BASE + 8,
};
enum iscsi_tgt_dscvr {
@@ -154,6 +160,16 @@ struct iscsi_uevent {
uint32_t param; /* enum iscsi_host_param */
uint32_t len;
} set_host_param;
+ struct msg_set_net_config {
+ uint32_t host_no;
+ uint32_t len;
+ } set_net_config;
+ struct msg_vendor_priv {
+ uint32_t host_no;
+ uint16_t priv_op;
+ uint16_t mesg_size;
+ uint32_t status;
+ } vendor_priv;
} u;
union {
/* messages k -> u */
@@ -187,6 +203,11 @@ struct iscsi_uevent {
struct msg_transport_connect_ret {
uint64_t handle;
} ep_connect_ret;
+ struct msg_vendor_priv_ret {
+ uint32_t host_no;
+ uint16_t priv_op;
+ uint16_t mesg_size;
+ } vendor_priv;
} r;
} __attribute__ ((aligned (sizeof(uint64_t))));
@@ -398,4 +419,28 @@ struct iscsi_stats {
__attribute__ ((aligned (sizeof(uint64_t))));
};
+/*
+ * Network interface configuration
+ */
+enum iscsi_net_param {
+ ISCSI_NET_PARAM_UNKNOWN = 0x00,
+ ISCSI_NET_PARAM_MAC_ADDR = ISCSI_NET_PARAM_UNKNOWN + 1,
+ ISCSI_NET_PARAM_IPV4_ADDR = ISCSI_NET_PARAM_UNKNOWN + 2,
+ ISCSI_NET_PARAM_IPV6_ADDR = ISCSI_NET_PARAM_UNKNOWN + 3,
+ ISCSI_NET_PARAM_IPV4_NETMASK = ISCSI_NET_PARAM_UNKNOWN + 4,
+ ISCSI_NET_PARAM_IPV6_NETMASK = ISCSI_NET_PARAM_UNKNOWN + 5,
+ ISCSI_NET_PARAM_IPV4_GATEWAY = ISCSI_NET_PARAM_UNKNOWN + 6,
+ ISCSI_NET_PARAM_IPV6_GATEWAY = ISCSI_NET_PARAM_UNKNOWN + 7,
+ ISCSI_NET_PARAM_BOOTPROTO = ISCSI_NET_PARAM_UNKNOWN + 8,
+ ISCSI_NET_PARAM_IPV6_AUTO_PARAM = ISCSI_NET_PARAM_UNKNOWN + 9,
+ ISCSI_NET_PARAM_MTU = ISCSI_NET_PARAM_UNKNOWN + 10,
+ ISCSI_NET_PARAM_VLAN = ISCSI_NET_PARAM_UNKNOWN + 11,
+};
+
+struct iscsi_net_config {
+ uint32_t param;
+ uint32_t length;
+ uint8_t value[1];
+};
+
#endif
diff --git a/include/scsi/scsi_transport_iscsi.h b/include/scsi/scsi_transport_iscsi.h
index 457588e..ff91813 100644
--- a/include/scsi/scsi_transport_iscsi.h
+++ b/include/scsi/scsi_transport_iscsi.h
@@ -109,6 +109,9 @@ struct iscsi_transport {
int (*set_host_param) (struct Scsi_Host *shost,
enum iscsi_host_param param, char *buf,
int buflen);
+ int (*get_net_config) (struct Scsi_Host *shost,
+ enum iscsi_net_param param, char *buf);
+ int (*set_net_config) (struct Scsi_Host *shost, 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,
@@ -132,6 +135,8 @@ struct iscsi_transport {
void (*ep_disconnect) (struct iscsi_endpoint *ep);
int (*tgt_dscvr) (struct Scsi_Host *shost, enum iscsi_tgt_dscvr type,
uint32_t enable, struct sockaddr *dst_addr);
+ int (*nl_priv_recv) (struct Scsi_Host *shost, uint16_t priv_op,
+ int status, char *data, int data_size);
};
/*
@@ -147,6 +152,8 @@ extern void iscsi_conn_error_event(struct iscsi_cls_conn *conn,
enum iscsi_err error);
extern int iscsi_recv_pdu(struct iscsi_cls_conn *conn, struct iscsi_hdr *hdr,
char *data, uint32_t data_size);
+extern int iscsi_vendor_priv_mesg(struct Scsi_Host *shost, uint16_t priv_op,
+ char *data, uint16_t data_size);
struct iscsi_cls_conn {
struct list_head conn_list; /* item in connlist */
@@ -217,6 +224,57 @@ struct iscsi_endpoint {
uint64_t id;
};
+struct iscsi_vlan_if {
+ struct list_head link; /* item in vlan_dev list */
+ unsigned long param_mask;
+ u16 vlan_id;
+ char ipv4_addr[4];
+ u8 ipv4_mask;
+ char ipv4_gw[4];
+ char ipv6_addr[16];
+ u8 ipv6_mask;
+ char ipv6_gw[16];
+};
+
+enum iscsi_net_valid_param {
+ NET_PARAM_MAC = 0x1,
+ NET_PARAM_IPV4_ADDR = 0x2,
+ NET_PARAM_IPV4_MASK = 0x4,
+ NET_PARAM_IPV4_GW = 0x8,
+ NET_PARAM_IPV6_ADDR = 0x10,
+ NET_PARAM_IPV6_MASK = 0x20,
+ NET_PARAM_IPV6_GW = 0x40,
+ NET_PARAM_BOOT_PROTO = 0x80,
+ NET_PARAM_CFG_ACCEPTED = 0x8000,
+};
+
+/**
+ * struct iscsi_net_info - scsi host network interface parameters
+ * @param_mask: bit mask of valid parameters
+ * @mac_addr: MAC address
+ * @boot_proto: boot protocola, static or dhcp
+ * @mtu: current MTU setting
+ * @ipv4_addr: IPv4 address
+ * @ipv4_mask: IPv4 netmask
+ * @ipv4_gw: IPv4 gateway
+ * @ipv6_addr: IPv6 address
+ * @ipv6_mask: IPv6 netmask
+ * @ipv6_gw: IPv6 gateway
+ */
+struct iscsi_net_info {
+ unsigned long param_mask;
+ u8 boot_proto;
+ unsigned char mac_addr[6];
+ int mtu;
+ char ipv4_addr[4];
+ u8 ipv4_mask;
+ char ipv4_gw[4];
+ char ipv6_addr[16];
+ u8 ipv6_mask;
+ char ipv6_gw[16];
+ struct list_head vlan_if; /* linked list of vlan interfaces */
+};
+
/*
* session and connection functions that can be used by HW iSCSI LLDs
*/
--
1.5.6.GIT
--
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