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-rw-r--r--include/scsi/libfcoe.h72
1 files changed, 63 insertions, 9 deletions
diff --git a/include/scsi/libfcoe.h b/include/scsi/libfcoe.h
index ec13f51531f..06f1b5a8ed1 100644
--- a/include/scsi/libfcoe.h
+++ b/include/scsi/libfcoe.h
@@ -26,6 +26,7 @@
#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>
@@ -37,6 +38,7 @@
#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.
@@ -45,6 +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,
@@ -52,8 +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.
@@ -70,19 +92,20 @@ enum fip_state {
* @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.
* @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
@@ -103,21 +126,23 @@ struct fcoe_ctlr {
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 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;
};
/**
@@ -156,8 +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 *);
@@ -168,6 +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 */