3 files changed, 191 insertions, 0 deletions

diff --git a/include/scsi/scsi_netlink.h b/include/scsi/scsi_netlink.h
new file mode 100644
index 000000000000..7a3a20e640c0
--- /dev/null
+++ b/include/scsi/scsi_netlink.h
@@ -0,0 +1,86 @@
+/*
+ *  SCSI Transport Netlink Interface
+ *    Used for the posting of outbound SCSI transport events
+ *
+ *  Copyright (C) 2006   James Smart, Emulex Corporation
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+#ifndef SCSI_NETLINK_H
+#define SCSI_NETLINK_H
+
+/*
+ * This file intended to be included by both kernel and user space
+ */
+
+/* Single Netlink Message type to send all SCSI Transport messages */
+#define SCSI_TRANSPORT_MSG              NLMSG_MIN_TYPE + 1
+
+/* SCSI Transport Broadcast Groups */
+        /* leaving groups 0 and 1 unassigned */
+#define SCSI_NL_GRP_FC_EVENTS           (1<<2)          /* Group 2 */
+#define SCSI_NL_GRP_CNT                 3
+
+
+/* SCSI_TRANSPORT_MSG event message header */
+struct scsi_nl_hdr {
+        uint8_t version;
+        uint8_t transport;
+        uint16_t magic;
+        uint16_t msgtype;
+        uint16_t msglen;
+} __attribute__((aligned(sizeof(uint64_t))));
+
+/* scsi_nl_hdr->version value */
+#define SCSI_NL_VERSION                         1
+
+/* scsi_nl_hdr->magic value */
+#define SCSI_NL_MAGIC                           0xA1B2
+
+/* scsi_nl_hdr->transport value */
+#define SCSI_NL_TRANSPORT                       0
+#define SCSI_NL_TRANSPORT_FC                    1
+#define SCSI_NL_MAX_TRANSPORTS                  2
+
+/* scsi_nl_hdr->msgtype values are defined in each transport */
+
+
+/*
+ * Vendor ID:
+ *   If transports post vendor-unique events, they must pass a well-known
+ *   32-bit vendor identifier. This identifier consists of 8 bits indicating
+ *   the "type" of identifier contained, and 24 bits of id data.
+ *
+ *   Identifiers for each type:
+ *    PCI :  ID data is the 16 bit PCI Registered Vendor ID
+ */
+#define SCSI_NL_VID_ID_MASK                     0x00FFFFFF
+#define SCSI_NL_VID_TYPE_MASK                   0xFF000000
+#define SCSI_NL_VID_TYPE_PCI                    0x01000000
+
+
+#define INIT_SCSI_NL_HDR(hdr, t, mtype, mlen)                   \
+        {                                                       \
+        (hdr)->version = SCSI_NL_VERSION;                       \
+        (hdr)->transport = t;                                   \
+        (hdr)->magic = SCSI_NL_MAGIC;                           \
+        (hdr)->msgtype = mtype;                                 \
+        (hdr)->msglen = mlen;                                   \
+        }
+
+
+#endif /* SCSI_NETLINK_H */
+
diff --git a/include/scsi/scsi_netlink_fc.h b/include/scsi/scsi_netlink_fc.h
new file mode 100644
index 000000000000..b213d2909fed
--- /dev/null
+++ b/include/scsi/scsi_netlink_fc.h
@@ -0,0 +1,71 @@
+/*
+ *  FC Transport Netlink Interface
+ *
+ *  Copyright (C) 2006   James Smart, Emulex Corporation
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+#ifndef SCSI_NETLINK_FC_H
+#define SCSI_NETLINK_FC_H
+
+#include <scsi/scsi_netlink.h>
+
+/*
+ * This file intended to be included by both kernel and user space
+ */
+
+/*
+ * FC Transport Message Types
+ */
+        /* kernel -> user */
+#define FC_NL_ASYNC_EVENT                       0x0100
+        /* user -> kernel */
+/* none */
+
+
+/*
+ * Message Structures :
+ */
+
+/* macro to round up message lengths to 8byte boundary */
+#define FC_NL_MSGALIGN(len)             (((len) + 7) & ~7)
+
+
+/*
+ * FC Transport Broadcast Event Message :
+ *   FC_NL_ASYNC_EVENT
+ *
+ * Note: if Vendor Unique message, &event_data will be  start of
+ *       vendor unique payload, and the length of the payload is
+ *       per event_datalen
+ *
+ * Note: When specifying vendor_id, be sure to read the Vendor Type and ID
+ *   formatting requirements specified in scsi_netlink.h
+ */
+struct fc_nl_event {
+        struct scsi_nl_hdr snlh;                /* must be 1st element ! */
+        uint64_t seconds;
+        uint32_t vendor_id;
+        uint16_t host_no;
+        uint16_t event_datalen;
+        uint32_t event_num;
+        uint32_t event_code;
+        uint32_t event_data;
+} __attribute__((aligned(sizeof(uint64_t))));
+
+
+#endif /* SCSI_NETLINK_FC_H */
+
diff --git a/include/scsi/scsi_transport_fc.h b/include/scsi/scsi_transport_fc.h
index c74be5dabfeb..f91c5358af3a 100644
--- a/include/scsi/scsi_transport_fc.h
+++ b/include/scsi/scsi_transport_fc.h
@@ -29,6 +29,7 @@
 
 #include <linux/sched.h>
 #include <scsi/scsi.h>
+#include <scsi/scsi_netlink.h>
 
 struct scsi_transport_template;
 
@@ -284,6 +285,30 @@ struct fc_host_statistics {
 
 
 /*
+ * FC Event Codes - Polled and Async, following FC HBAAPI v2.0 guidelines
+ */
+
+/*
+ * fc_host_event_code: If you alter this, you also need to alter
+ * scsi_transport_fc.c (for the ascii descriptions).
+ */
+enum fc_host_event_code  {
+        FCH_EVT_LIP                     = 0x1,
+        FCH_EVT_LINKUP                  = 0x2,
+        FCH_EVT_LINKDOWN                = 0x3,
+        FCH_EVT_LIPRESET                = 0x4,
+        FCH_EVT_RSCN                    = 0x5,
+        FCH_EVT_ADAPTER_CHANGE          = 0x103,
+        FCH_EVT_PORT_UNKNOWN            = 0x200,
+        FCH_EVT_PORT_OFFLINE            = 0x201,
+        FCH_EVT_PORT_ONLINE             = 0x202,
+        FCH_EVT_PORT_FABRIC             = 0x204,
+        FCH_EVT_LINK_UNKNOWN            = 0x500,
+        FCH_EVT_VENDOR_UNIQUE           = 0xffff,
+};
+
+
+/*
  * FC Local Port (Host) Attributes
  *
  * Attributes are based on HBAAPI V2.0 definitions.
@@ -526,5 +551,14 @@ struct fc_rport *fc_remote_port_add(struct Scsi_Host *shost,
 void fc_remote_port_delete(struct fc_rport  *rport);
 void fc_remote_port_rolechg(struct fc_rport  *rport, u32 roles);
 int scsi_is_fc_rport(const struct device *);
+u32 fc_get_event_number(void);
+void fc_host_post_event(struct Scsi_Host *shost, u32 event_number,
+                enum fc_host_event_code event_code, u32 event_data);
+void fc_host_post_vendor_event(struct Scsi_Host *shost, u32 event_number,
+                u32 data_len, char * data_buf, u32 vendor_id);
+        /* Note: when specifying vendor_id to fc_host_post_vendor_event()
+         *   be sure to read the Vendor Type and ID formatting requirements
+         *   specified in scsi_netlink.h
+         */
 
 #endif /* SCSI_TRANSPORT_FC_H */