1 files changed, 67 insertions, 15 deletions

diff --git a/include/scsi/libfcoe.h b/include/scsi/libfcoe.h
index c603f4a7e7fc..06f1b5a8ed19 100644
--- a/include/scsi/libfcoe.h
+++ b/include/scsi/libfcoe.h
@@ -26,15 +26,19 @@
 #include <linux/netdevice.h>
 #include <linux/skbuff.h>
 #include <linux/workqueue.h>
+#include <linux/random.h>
 #include <scsi/fc/fc_fcoe.h>
 #include <scsi/libfc.h>
 
+#define FCOE_MAX_CMD_LEN        16      /* Supported CDB length */
+
 /*
  * FIP tunable parameters.
  */
 #define FCOE_CTLR_START_DELAY   2000    /* mS after first adv. to choose FCF */
 #define FCOE_CTRL_SOL_TOV       2000    /* min. solicitation interval (mS) */
 #define FCOE_CTLR_FCF_LIMIT     20      /* max. number of FCF entries */
+#define FCOE_CTLR_VN2VN_LOGIN_LIMIT 3   /* max. VN2VN rport login retries */
 
 /**
  * enum fip_state - internal state of FCoE controller.
@@ -43,6 +47,11 @@
  * @FIP_ST_AUTO:        determining whether to use FIP or non-FIP mode.
  * @FIP_ST_NON_FIP:     non-FIP mode selected.
  * @FIP_ST_ENABLED:     FIP mode selected.
+ * @FIP_ST_VNMP_START:  VN2VN multipath mode start, wait
+ * @FIP_ST_VNMP_PROBE1: VN2VN sent first probe, listening
+ * @FIP_ST_VNMP_PROBE2: VN2VN sent second probe, listening
+ * @FIP_ST_VNMP_CLAIM:  VN2VN sent claim, waiting for responses
+ * @FIP_ST_VNMP_UP:     VN2VN multipath mode operation
  */
 enum fip_state {
         FIP_ST_DISABLED,
@@ -50,8 +59,23 @@ enum fip_state {
         FIP_ST_AUTO,
         FIP_ST_NON_FIP,
         FIP_ST_ENABLED,
+        FIP_ST_VNMP_START,
+        FIP_ST_VNMP_PROBE1,
+        FIP_ST_VNMP_PROBE2,
+        FIP_ST_VNMP_CLAIM,
+        FIP_ST_VNMP_UP,
 };
 
+/*
+ * Modes:
+ * The mode is the state that is to be entered after link up.
+ * It must not change after fcoe_ctlr_init() sets it.
+ */
+#define FIP_MODE_AUTO           FIP_ST_AUTO
+#define FIP_MODE_NON_FIP        FIP_ST_NON_FIP
+#define FIP_MODE_FABRIC         FIP_ST_ENABLED
+#define FIP_MODE_VN2VN          FIP_ST_VNMP_START
+
 /**
  * struct fcoe_ctlr - FCoE Controller and FIP state
  * @state:         internal FIP state for network link and FIP or non-FIP mode.
@@ -65,24 +89,23 @@ enum fip_state {
  * @port_ka_time:  time of next port keep-alive.
  * @ctlr_ka_time:  time of next controller keep-alive.
  * @timer:         timer struct used for all delayed events.
- * @link_work:     &work_struct for doing FCF selection.
+ * @timer_work:    &work_struct for doing keep-alives and resets.
  * @recv_work:     &work_struct for receiving FIP frames.
  * @fip_recv_list: list of received FIP frames.
+ * @rnd_state:     state for pseudo-random number generator.
+ * @port_id:       proposed or selected local-port ID.
  * @user_mfs:      configured maximum FC frame size, including FC header.
  * @flogi_oxid:    exchange ID of most recent fabric login.
  * @flogi_count:   number of FLOGI attempts in AUTO mode.
- * @link:          current link status for libfc.
- * @last_link:     last link state reported to libfc.
  * @map_dest:      use the FC_MAP mode for destination MAC addresses.
  * @spma:          supports SPMA server-provided MACs mode
- * @send_ctlr_ka:  need to send controller keep alive
- * @send_port_ka:  need to send port keep alives
+ * @probe_tries:   number of FC_IDs probed
  * @dest_addr:     MAC address of the selected FC forwarder.
  * @ctl_src_addr:  the native MAC address of our local port.
  * @send:          LLD-supplied function to handle sending FIP Ethernet frames
  * @update_mac:    LLD-supplied function to handle changes to MAC addresses.
  * @get_src_addr:  LLD-supplied function to supply a source MAC address.
- * @lock:          lock protecting this structure.
+ * @ctlr_mutex:    lock protecting this structure.
  *
  * This structure is used by all FCoE drivers.  It contains information
  * needed by all FCoE low-level drivers (LLDs) as well as internal state
@@ -100,26 +123,26 @@ struct fcoe_ctlr {
         unsigned long port_ka_time;
         unsigned long ctlr_ka_time;
         struct timer_list timer;
-        struct work_struct link_work;
+        struct work_struct timer_work;
         struct work_struct recv_work;
         struct sk_buff_head fip_recv_list;
+
+        struct rnd_state rnd_state;
+        u32 port_id;
+
         u16 user_mfs;
         u16 flogi_oxid;
         u8 flogi_count;
-        u8 link;
-        u8 last_link;
-        u8 reset_req;
         u8 map_dest;
         u8 spma;
-        u8 send_ctlr_ka;
-        u8 send_port_ka;
+        u8 probe_tries;
         u8 dest_addr[ETH_ALEN];
         u8 ctl_src_addr[ETH_ALEN];
 
         void (*send)(struct fcoe_ctlr *, struct sk_buff *);
         void (*update_mac)(struct fc_lport *, u8 *addr);
         u8 * (*get_src_addr)(struct fc_lport *);
-        spinlock_t lock;
+        struct mutex ctlr_mutex;
 };
 
 /**
@@ -158,8 +181,26 @@ struct fcoe_fcf {
         u8 fd_flags:1;
 };
 
+/**
+ * struct fcoe_rport - VN2VN remote port
+ * @time:       time of create or last beacon packet received from node
+ * @fcoe_len:   max FCoE frame size, not including VLAN or Ethernet headers
+ * @flags:      flags from probe or claim
+ * @login_count: number of unsuccessful rport logins to this port
+ * @enode_mac:  E_Node control MAC address
+ * @vn_mac:     VN_Node assigned MAC address for data
+ */
+struct fcoe_rport {
+        unsigned long time;
+        u16 fcoe_len;
+        u16 flags;
+        u8 login_count;
+        u8 enode_mac[ETH_ALEN];
+        u8 vn_mac[ETH_ALEN];
+};
+
 /* FIP API functions */
-void fcoe_ctlr_init(struct fcoe_ctlr *);
+void fcoe_ctlr_init(struct fcoe_ctlr *, enum fip_state);
 void fcoe_ctlr_destroy(struct fcoe_ctlr *);
 void fcoe_ctlr_link_up(struct fcoe_ctlr *);
 int fcoe_ctlr_link_down(struct fcoe_ctlr *);
@@ -170,6 +211,17 @@ int fcoe_ctlr_recv_flogi(struct fcoe_ctlr *, struct fc_lport *,
 
 /* libfcoe funcs */
 u64 fcoe_wwn_from_mac(unsigned char mac[], unsigned int, unsigned int);
-int fcoe_libfc_config(struct fc_lport *, struct libfc_function_template *);
+int fcoe_libfc_config(struct fc_lport *, struct fcoe_ctlr *,
+                      const struct libfc_function_template *, int init_fcp);
+
+/**
+ * is_fip_mode() - returns true if FIP mode selected.
+ * @fip:        FCoE controller.
+ */
+static inline bool is_fip_mode(struct fcoe_ctlr *fip)
+{
+        return fip->state == FIP_ST_ENABLED;
+}
+
 
 #endif /* _LIBFCOE_H */