diff options
| -rw-r--r-- | drivers/scsi/scsi_transport_iscsi.c | 47 | ||||
| -rw-r--r-- | include/scsi/iscsi_if.h | 17 | ||||
| -rw-r--r-- | include/scsi/scsi_transport_iscsi.h | 3 |
3 files changed, 67 insertions, 0 deletions
diff --git a/drivers/scsi/scsi_transport_iscsi.c b/drivers/scsi/scsi_transport_iscsi.c index cde679f1b01d..b85f8a4b8962 100644 --- a/drivers/scsi/scsi_transport_iscsi.c +++ b/drivers/scsi/scsi_transport_iscsi.c @@ -693,6 +693,19 @@ int iscsi_session_chkready(struct iscsi_cls_session *session) } EXPORT_SYMBOL_GPL(iscsi_session_chkready); +int iscsi_is_session_online(struct iscsi_cls_session *session) +{ + unsigned long flags; + int ret = 0; + + spin_lock_irqsave(&session->lock, flags); + if (session->state == ISCSI_SESSION_LOGGED_IN) + ret = 1; + spin_unlock_irqrestore(&session->lock, flags); + return ret; +} +EXPORT_SYMBOL_GPL(iscsi_is_session_online); + static void iscsi_session_release(struct device *dev) { struct iscsi_cls_session *session = iscsi_dev_to_session(dev); @@ -1433,6 +1446,40 @@ void iscsi_conn_error_event(struct iscsi_cls_conn *conn, enum iscsi_err error) } EXPORT_SYMBOL_GPL(iscsi_conn_error_event); +void iscsi_conn_login_event(struct iscsi_cls_conn *conn, + enum iscsi_conn_state state) +{ + struct nlmsghdr *nlh; + struct sk_buff *skb; + struct iscsi_uevent *ev; + struct iscsi_internal *priv; + int len = NLMSG_SPACE(sizeof(*ev)); + + priv = iscsi_if_transport_lookup(conn->transport); + if (!priv) + return; + + skb = alloc_skb(len, GFP_ATOMIC); + if (!skb) { + iscsi_cls_conn_printk(KERN_ERR, conn, "gracefully ignored " + "conn login (%d)\n", state); + return; + } + + nlh = __nlmsg_put(skb, 0, 0, 0, (len - sizeof(*nlh)), 0); + ev = NLMSG_DATA(nlh); + ev->transport_handle = iscsi_handle(conn->transport); + ev->type = ISCSI_KEVENT_CONN_LOGIN_STATE; + ev->r.conn_login.state = state; + ev->r.conn_login.cid = conn->cid; + ev->r.conn_login.sid = iscsi_conn_get_sid(conn); + iscsi_multicast_skb(skb, ISCSI_NL_GRP_ISCSID, GFP_ATOMIC); + + iscsi_cls_conn_printk(KERN_INFO, conn, "detected conn login (%d)\n", + state); +} +EXPORT_SYMBOL_GPL(iscsi_conn_login_event); + static int iscsi_if_send_reply(uint32_t group, int seq, int type, int done, int multi, void *payload, int size) diff --git a/include/scsi/iscsi_if.h b/include/scsi/iscsi_if.h index d3f256a232f8..629ca42dfe75 100644 --- a/include/scsi/iscsi_if.h +++ b/include/scsi/iscsi_if.h @@ -71,6 +71,7 @@ enum iscsi_uevent_e { ISCSI_KEVENT_PATH_REQ = KEVENT_BASE + 7, ISCSI_KEVENT_IF_DOWN = KEVENT_BASE + 8, + ISCSI_KEVENT_CONN_LOGIN_STATE = KEVENT_BASE + 9, }; enum iscsi_tgt_dscvr { @@ -198,6 +199,11 @@ struct iscsi_uevent { uint32_t cid; uint64_t recv_handle; } recv_req; + struct msg_conn_login { + uint32_t sid; + uint32_t cid; + uint32_t state; /* enum iscsi_conn_state */ + } conn_login; struct msg_conn_error { uint32_t sid; uint32_t cid; @@ -309,6 +315,16 @@ enum iscsi_net_param { ISCSI_NET_PARAM_IFACE_NAME = 17, }; +enum iscsi_conn_state { + ISCSI_CONN_STATE_FREE, + ISCSI_CONN_STATE_XPT_WAIT, + ISCSI_CONN_STATE_IN_LOGIN, + ISCSI_CONN_STATE_LOGGED_IN, + ISCSI_CONN_STATE_IN_LOGOUT, + ISCSI_CONN_STATE_LOGOUT_REQUESTED, + ISCSI_CONN_STATE_CLEANUP_WAIT, +}; + /* * Common error codes */ @@ -421,6 +437,7 @@ enum iscsi_host_param { #define CAP_DIGEST_OFFLOAD 0x1000 /* offload hdr and data digests */ #define CAP_PADDING_OFFLOAD 0x2000 /* offload padding insertion, removal, and verification */ +#define CAP_LOGIN_OFFLOAD 0x4000 /* offload session login */ /* * These flags describes reason of stop_conn() call diff --git a/include/scsi/scsi_transport_iscsi.h b/include/scsi/scsi_transport_iscsi.h index 4a3edeeae8f6..3389cd5ea94c 100644 --- a/include/scsi/scsi_transport_iscsi.h +++ b/include/scsi/scsi_transport_iscsi.h @@ -156,6 +156,8 @@ extern int iscsi_unregister_transport(struct iscsi_transport *tt); */ extern void iscsi_conn_error_event(struct iscsi_cls_conn *conn, enum iscsi_err error); +extern void iscsi_conn_login_event(struct iscsi_cls_conn *conn, + enum iscsi_conn_state state); extern int iscsi_recv_pdu(struct iscsi_cls_conn *conn, struct iscsi_hdr *hdr, char *data, uint32_t data_size); @@ -268,6 +270,7 @@ struct iscsi_iface { dev_printk(prefix, &(_cls_conn)->dev, fmt, ##a) extern int iscsi_session_chkready(struct iscsi_cls_session *session); +extern int iscsi_is_session_online(struct iscsi_cls_session *session); extern struct iscsi_cls_session *iscsi_alloc_session(struct Scsi_Host *shost, struct iscsi_transport *transport, int dd_size); extern int iscsi_add_session(struct iscsi_cls_session *session, |