[SCSI] bfa: Add support to register node symbolic name with name server

- Changes to register node symbolic name with name server on the fabric
  by sending CT commands RNN_ID and RSNN_NN.

Signed-off-by: Vijaya Mohan Guvva <vmohan@brocade.com>
Signed-off-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

drivers/scsi/bfa/bfa_defs_fcs.h

@@ -93,6 +93,7 @@ struct bfa_lport_cfg_s {
 	wwn_t	       pwwn;       /*  port wwn */
 	wwn_t	       nwwn;       /*  node wwn */
 	struct bfa_lport_symname_s  sym_name;   /*  vm port symbolic name */
+	struct bfa_lport_symname_s node_sym_name; /* Node symbolic name */
 	enum bfa_lport_role roles;      /* FCS port roles */
 	u32     rsvd;
 	bfa_boolean_t   preboot_vp;  /*  vport created from PBC */
@@ -192,6 +193,18 @@ struct bfa_lport_stats_s {
 	u32	ns_gidft_unknown_rsp;
 	u32	ns_gidft_alloc_wait;
 
+	u32	ns_rnnid_sent;
+	u32	ns_rnnid_accepts;
+	u32	ns_rnnid_rsp_err;
+	u32	ns_rnnid_rejects;
+	u32	ns_rnnid_alloc_wait;
+
+	u32	ns_rsnn_nn_sent;
+	u32	ns_rsnn_nn_accepts;
+	u32	ns_rsnn_nn_rsp_err;
+	u32	ns_rsnn_nn_rejects;
+	u32	ns_rsnn_nn_alloc_wait;
+
 	/*
 	 * Mgmt Server stats
 	 */

drivers/scsi/bfa/bfa_fc.h

@@ -1279,6 +1279,7 @@ enum {
 	GS_GSPN_ID	= 0x0118,	/* Get symbolic PN on ID */
 	GS_RFT_ID	= 0x0217,	/* Register fc4type on ID */
 	GS_RSPN_ID	= 0x0218,	/* Register symbolic PN on ID */
+	GS_RSNN_NN	= 0x0239,	/* Register symbolic NN on NN */
 	GS_RPN_ID	= 0x0212,	/* Register port name */
 	GS_RNN_ID	= 0x0213,	/* Register node name */
 	GS_RCS_ID	= 0x0214,	/* Register class of service */
@@ -1356,6 +1357,15 @@ struct fcgs_rspnid_req_s {
 	u8	spn[256];	/* symbolic port name */
 };
 
+/*
+ * RSNN_NN
+ */
+struct fcgs_rsnn_nn_req_s {
+	wwn_t	node_name;	/* Node name */
+	u8	snn_len;	/* symbolic node name length */
+	u8	snn[256];	/* symbolic node name */
+};
+
 /*
  * RPN_ID
  */

drivers/scsi/bfa/bfa_fcbuild.c

@@ -1251,6 +1251,27 @@ fc_rspnid_build(struct fchs_s *fchs, void *pyld, u32 s_id, u16 ox_id,
 	return sizeof(struct fcgs_rspnid_req_s) + sizeof(struct ct_hdr_s);
 }
 
+u16
+fc_rsnn_nn_build(struct fchs_s *fchs, void *pyld, u32 s_id,
+			wwn_t node_name, u8 *name)
+{
+	struct ct_hdr_s *cthdr = (struct ct_hdr_s *) pyld;
+	struct fcgs_rsnn_nn_req_s *rsnn_nn =
+		(struct fcgs_rsnn_nn_req_s *) (cthdr + 1);
+	u32	d_id = bfa_hton3b(FC_NAME_SERVER);
+
+	fc_gs_fchdr_build(fchs, d_id, s_id, 0);
+	fc_gs_cthdr_build(cthdr, s_id, GS_RSNN_NN);
+
+	memset(rsnn_nn, 0, sizeof(struct fcgs_rsnn_nn_req_s));
+
+	rsnn_nn->node_name = node_name;
+	rsnn_nn->snn_len = (u8) strlen((char *)name);
+	strncpy((char *)rsnn_nn->snn, (char *)name, rsnn_nn->snn_len);
+
+	return sizeof(struct fcgs_rsnn_nn_req_s) + sizeof(struct ct_hdr_s);
+}
+
 u16
 fc_gid_ft_build(struct fchs_s *fchs, void *pyld, u32 s_id, u8 fc4_type)
 {

drivers/scsi/bfa/bfa_fcbuild.h

@@ -166,6 +166,8 @@ enum fc_parse_status fc_rrq_rsp_parse(struct fchs_s *buf, int len);
 
 u16        fc_rspnid_build(struct fchs_s *fchs, void *pld, u32 s_id,
 				u16 ox_id, u8 *name);
+u16	fc_rsnn_nn_build(struct fchs_s *fchs, void *pld, u32 s_id,
+				wwn_t node_name, u8 *name);
 
 u16        fc_rftid_build(struct fchs_s *fchs, void *pld, u32 s_id,
 			       u16 ox_id, enum bfa_lport_role role);

drivers/scsi/bfa/bfa_fcs.c

@@ -165,6 +165,7 @@ bfa_fcs_driver_info_init(struct bfa_fcs_s *fcs,
 	fcs->driver_info = *driver_info;
 
 	bfa_fcs_fabric_psymb_init(&fcs->fabric);
+	bfa_fcs_fabric_nsymb_init(&fcs->fabric);
 }
 
 /*
@@ -842,6 +843,44 @@ bfa_fcs_fabric_psymb_init(struct bfa_fcs_fabric_s *fabric)
 	port_cfg->sym_name.symname[BFA_SYMNAME_MAXLEN - 1] = 0;
 }
 
+/*
+ * Node Symbolic Name Creation for base port and all vports
+ */
+void
+bfa_fcs_fabric_nsymb_init(struct bfa_fcs_fabric_s *fabric)
+{
+	struct bfa_lport_cfg_s *port_cfg = &fabric->bport.port_cfg;
+	char model[BFA_ADAPTER_MODEL_NAME_LEN] = {0};
+	struct bfa_fcs_driver_info_s *driver_info = &fabric->fcs->driver_info;
+
+	bfa_ioc_get_adapter_model(&fabric->fcs->bfa->ioc, model);
+
+	/* Model name/number */
+	strncpy((char *)&port_cfg->node_sym_name, model,
+		BFA_FCS_PORT_SYMBNAME_MODEL_SZ);
+	strncat((char *)&port_cfg->node_sym_name,
+			BFA_FCS_PORT_SYMBNAME_SEPARATOR,
+			sizeof(BFA_FCS_PORT_SYMBNAME_SEPARATOR));
+
+	/* Driver Version */
+	strncat((char *)&port_cfg->node_sym_name, (char *)driver_info->version,
+		BFA_FCS_PORT_SYMBNAME_VERSION_SZ);
+	strncat((char *)&port_cfg->node_sym_name,
+			BFA_FCS_PORT_SYMBNAME_SEPARATOR,
+			sizeof(BFA_FCS_PORT_SYMBNAME_SEPARATOR));
+
+	/* Host machine name */
+	strncat((char *)&port_cfg->node_sym_name,
+		(char *)driver_info->host_machine_name,
+		BFA_FCS_PORT_SYMBNAME_MACHINENAME_SZ);
+	strncat((char *)&port_cfg->node_sym_name,
+			BFA_FCS_PORT_SYMBNAME_SEPARATOR,
+			sizeof(BFA_FCS_PORT_SYMBNAME_SEPARATOR));
+
+	/* null terminate */
+	port_cfg->node_sym_name.symname[BFA_SYMNAME_MAXLEN - 1] = 0;
+}
+
 /*
  * bfa lps login completion callback
  */

drivers/scsi/bfa/bfa_fcs.h

@@ -62,6 +62,7 @@ struct bfa_fcs_s;
 #define N2N_LOCAL_PID	    0x010000
 #define N2N_REMOTE_PID		0x020000
 #define	BFA_FCS_RETRY_TIMEOUT 2000
+#define BFA_FCS_MAX_NS_RETRIES 5
 #define BFA_FCS_PID_IS_WKA(pid)  ((bfa_ntoh3b(pid) > 0xFFF000) ?  1 : 0)
 
 
@@ -72,6 +73,8 @@ struct bfa_fcs_lport_ns_s {
 	struct bfa_fcs_lport_s *port;	/*  parent port */
 	struct bfa_fcxp_s *fcxp;
 	struct bfa_fcxp_wqe_s fcxp_wqe;
+	u8	num_rnnid_retries;
+	u8	num_rsnn_nn_retries;
 };
 
 
@@ -265,6 +268,7 @@ struct bfa_fcs_fabric_s;
 #define bfa_fcs_lport_get_pwwn(_lport)	((_lport)->port_cfg.pwwn)
 #define bfa_fcs_lport_get_nwwn(_lport)	((_lport)->port_cfg.nwwn)
 #define bfa_fcs_lport_get_psym_name(_lport)	((_lport)->port_cfg.sym_name)
+#define bfa_fcs_lport_get_nsym_name(_lport) ((_lport)->port_cfg.node_sym_name)
 #define bfa_fcs_lport_is_initiator(_lport)			\
 	((_lport)->port_cfg.roles & BFA_LPORT_ROLE_FCP_IM)
 #define bfa_fcs_lport_get_nrports(_lport)	\
@@ -780,6 +784,7 @@ void bfa_fcs_fabric_modstart(struct bfa_fcs_s *fcs);
 void bfa_fcs_fabric_uf_recv(struct bfa_fcs_fabric_s *fabric,
 		struct fchs_s *fchs, u16 len);
 void	bfa_fcs_fabric_psymb_init(struct bfa_fcs_fabric_s *fabric);
+void	bfa_fcs_fabric_nsymb_init(struct bfa_fcs_fabric_s *fabric);
 void bfa_fcs_fabric_set_fabric_name(struct bfa_fcs_fabric_s *fabric,
 	       wwn_t fabric_name);
 u16 bfa_fcs_fabric_get_switch_oui(struct bfa_fcs_fabric_s *fabric);