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-rw-r--r--drivers/scsi/scsi_transport_iscsi.c101
-rw-r--r--include/scsi/iscsi_if.h29
-rw-r--r--include/scsi/scsi_transport_iscsi.h4
3 files changed, 133 insertions, 1 deletions
diff --git a/drivers/scsi/scsi_transport_iscsi.c b/drivers/scsi/scsi_transport_iscsi.c
index a20f181..7bf0dec 100644
--- a/drivers/scsi/scsi_transport_iscsi.c
+++ b/drivers/scsi/scsi_transport_iscsi.c
@@ -727,10 +727,11 @@ static void iscsi_session_release(struct device *dev)
kfree(session);
}
-static int iscsi_is_session_dev(const struct device *dev)
+int iscsi_is_session_dev(const struct device *dev)
{
return dev->release == iscsi_session_release;
}
+EXPORT_SYMBOL_GPL(iscsi_is_session_dev);
static int iscsi_iter_session_fn(struct device *dev, void *data)
{
@@ -2002,6 +2003,96 @@ iscsi_send_ping(struct iscsi_transport *transport, struct iscsi_uevent *ev)
}
static int
+iscsi_get_chap(struct iscsi_transport *transport, struct nlmsghdr *nlh)
+{
+ struct iscsi_uevent *ev = NLMSG_DATA(nlh);
+ struct Scsi_Host *shost = NULL;
+ struct iscsi_chap_rec *chap_rec;
+ struct iscsi_internal *priv;
+ struct sk_buff *skbchap;
+ struct nlmsghdr *nlhchap;
+ struct iscsi_uevent *evchap;
+ uint32_t chap_buf_size;
+ int len, err = 0;
+ char *buf;
+
+ if (!transport->get_chap)
+ return -EINVAL;
+
+ priv = iscsi_if_transport_lookup(transport);
+ if (!priv)
+ return -EINVAL;
+
+ chap_buf_size = (ev->u.get_chap.num_entries * sizeof(*chap_rec));
+ len = NLMSG_SPACE(sizeof(*ev) + chap_buf_size);
+
+ shost = scsi_host_lookup(ev->u.get_chap.host_no);
+ if (!shost) {
+ printk(KERN_ERR "%s: failed. Cound not find host no %u\n",
+ __func__, ev->u.get_chap.host_no);
+ return -ENODEV;
+ }
+
+ do {
+ int actual_size;
+
+ skbchap = alloc_skb(len, GFP_KERNEL);
+ if (!skbchap) {
+ printk(KERN_ERR "can not deliver chap: OOM\n");
+ err = -ENOMEM;
+ goto exit_get_chap;
+ }
+
+ nlhchap = __nlmsg_put(skbchap, 0, 0, 0,
+ (len - sizeof(*nlhchap)), 0);
+ evchap = NLMSG_DATA(nlhchap);
+ memset(evchap, 0, sizeof(*evchap));
+ evchap->transport_handle = iscsi_handle(transport);
+ evchap->type = nlh->nlmsg_type;
+ evchap->u.get_chap.host_no = ev->u.get_chap.host_no;
+ evchap->u.get_chap.chap_tbl_idx = ev->u.get_chap.chap_tbl_idx;
+ evchap->u.get_chap.num_entries = ev->u.get_chap.num_entries;
+ buf = (char *) ((char *)evchap + sizeof(*evchap));
+ memset(buf, 0, chap_buf_size);
+
+ err = transport->get_chap(shost, ev->u.get_chap.chap_tbl_idx,
+ &evchap->u.get_chap.num_entries, buf);
+
+ actual_size = NLMSG_SPACE(sizeof(*ev) + chap_buf_size);
+ skb_trim(skbchap, NLMSG_ALIGN(actual_size));
+ nlhchap->nlmsg_len = actual_size;
+
+ err = iscsi_multicast_skb(skbchap, ISCSI_NL_GRP_ISCSID,
+ GFP_KERNEL);
+ } while (err < 0 && err != -ECONNREFUSED);
+
+exit_get_chap:
+ scsi_host_put(shost);
+ return err;
+}
+
+static int iscsi_delete_chap(struct iscsi_transport *transport,
+ struct iscsi_uevent *ev)
+{
+ struct Scsi_Host *shost;
+ int err = 0;
+
+ if (!transport->delete_chap)
+ return -ENOSYS;
+
+ shost = scsi_host_lookup(ev->u.delete_chap.host_no);
+ if (!shost) {
+ printk(KERN_ERR "%s could not find host no %u\n",
+ __func__, ev->u.delete_chap.host_no);
+ return -ENODEV;
+ }
+
+ err = transport->delete_chap(shost, ev->u.delete_chap.chap_tbl_idx);
+ scsi_host_put(shost);
+ return err;
+}
+
+static int
iscsi_if_recv_msg(struct sk_buff *skb, struct nlmsghdr *nlh, uint32_t *group)
{
int err = 0;
@@ -2149,6 +2240,12 @@ iscsi_if_recv_msg(struct sk_buff *skb, struct nlmsghdr *nlh, uint32_t *group)
case ISCSI_UEVENT_PING:
err = iscsi_send_ping(transport, ev);
break;
+ case ISCSI_UEVENT_GET_CHAP:
+ err = iscsi_get_chap(transport, nlh);
+ break;
+ case ISCSI_UEVENT_DELETE_CHAP:
+ err = iscsi_delete_chap(transport, ev);
+ break;
default:
err = -ENOSYS;
break;
@@ -2198,6 +2295,8 @@ iscsi_if_rx(struct sk_buff *skb)
*/
if (ev->type == ISCSI_UEVENT_GET_STATS && !err)
break;
+ if (ev->type == ISCSI_UEVENT_GET_CHAP && !err)
+ break;
err = iscsi_if_send_reply(group, nlh->nlmsg_seq,
nlh->nlmsg_type, 0, 0, ev, sizeof(*ev));
} while (err < 0 && err != -ECONNREFUSED && err != -ESRCH);
diff --git a/include/scsi/iscsi_if.h b/include/scsi/iscsi_if.h
index 7ff9678..228a8af 100644
--- a/include/scsi/iscsi_if.h
+++ b/include/scsi/iscsi_if.h
@@ -61,6 +61,8 @@ enum iscsi_uevent_e {
ISCSI_UEVENT_PATH_UPDATE = UEVENT_BASE + 20,
ISCSI_UEVENT_SET_IFACE_PARAMS = UEVENT_BASE + 21,
ISCSI_UEVENT_PING = UEVENT_BASE + 22,
+ ISCSI_UEVENT_GET_CHAP = UEVENT_BASE + 23,
+ ISCSI_UEVENT_DELETE_CHAP = UEVENT_BASE + 24,
/* up events */
ISCSI_KEVENT_RECV_PDU = KEVENT_BASE + 1,
@@ -196,6 +198,18 @@ struct iscsi_uevent {
uint32_t pid; /* unique ping id associated
with each ping request */
} iscsi_ping;
+ struct msg_get_chap {
+ uint32_t host_no;
+ uint32_t num_entries; /* number of CHAP entries
+ * on request, number of
+ * valid CHAP entries on
+ * response */
+ uint16_t chap_tbl_idx;
+ } get_chap;
+ struct msg_delete_chap {
+ uint32_t host_no;
+ uint16_t chap_tbl_idx;
+ } delete_chap;
} u;
union {
/* messages k -> u */
@@ -548,4 +562,19 @@ struct iscsi_stats {
__attribute__ ((aligned (sizeof(uint64_t))));
};
+enum chap_type_e {
+ CHAP_TYPE_OUT,
+ CHAP_TYPE_IN,
+};
+
+#define ISCSI_CHAP_AUTH_NAME_MAX_LEN 256
+#define ISCSI_CHAP_AUTH_SECRET_MAX_LEN 256
+struct iscsi_chap_rec {
+ uint16_t chap_tbl_idx;
+ enum chap_type_e chap_type;
+ char username[ISCSI_CHAP_AUTH_NAME_MAX_LEN];
+ uint8_t password[ISCSI_CHAP_AUTH_SECRET_MAX_LEN];
+ uint8_t password_length;
+} __packed;
+
#endif
diff --git a/include/scsi/scsi_transport_iscsi.h b/include/scsi/scsi_transport_iscsi.h
index aede513..53f0b36 100644
--- a/include/scsi/scsi_transport_iscsi.h
+++ b/include/scsi/scsi_transport_iscsi.h
@@ -147,6 +147,9 @@ struct iscsi_transport {
int (*send_ping) (struct Scsi_Host *shost, uint32_t iface_num,
uint32_t iface_type, uint32_t payload_size,
uint32_t pid, struct sockaddr *dst_addr);
+ int (*get_chap) (struct Scsi_Host *shost, uint16_t chap_tbl_idx,
+ uint32_t *num_entries, char *buf);
+ int (*delete_chap) (struct Scsi_Host *shost, uint16_t chap_tbl_idx);
};
/*
@@ -325,5 +328,6 @@ extern void iscsi_destroy_iface(struct iscsi_iface *iface);
extern struct iscsi_iface *iscsi_lookup_iface(int handle);
extern char *iscsi_get_port_speed_name(struct Scsi_Host *shost);
extern char *iscsi_get_port_state_name(struct Scsi_Host *shost);
+extern int iscsi_is_session_dev(const struct device *dev);
#endif
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