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Commit c914f7d1 authored by Chris Leech's avatar Chris Leech Committed by James Bottomley
Browse files

[SCSI] libfc: combine name server registration request functions 



Signed-off-by: default avatarChris Leech <christopher.leech@intel.com>
Signed-off-by: default avatarRobert Love <robert.w.love@intel.com>
Signed-off-by: default avatarJames Bottomley <James.Bottomley@suse.de>
parent 7cccc157

drivers/scsi/libfc/fc_lport.c

+42 −122
Original line number Diff line number Diff line
@@ -108,10 +108,7 @@ static void fc_lport_error(struct fc_lport *, struct fc_frame *); 
static void fc_lport_enter_reset(struct fc_lport *);

static void fc_lport_enter_flogi(struct fc_lport *);

static void fc_lport_enter_dns(struct fc_lport *);

static void fc_lport_enter_rnn_id(struct fc_lport *);

static void fc_lport_enter_rsnn_nn(struct fc_lport *);

static void fc_lport_enter_rspn_id(struct fc_lport *);

static void fc_lport_enter_rft_id(struct fc_lport *);

static void fc_lport_enter_ns(struct fc_lport *, enum fc_lport_state);

static void fc_lport_enter_scr(struct fc_lport *);

static void fc_lport_enter_ready(struct fc_lport *);

static void fc_lport_enter_logo(struct fc_lport *);
@@ -157,7 +154,7 @@ static void fc_lport_rport_callback(struct fc_lport *lport, 
	case RPORT_EV_READY:

		if (lport->state == LPORT_ST_DNS) {

			lport->dns_rp = rdata;

			fc_lport_enter_rnn_id(lport);

			fc_lport_enter_ns(lport, LPORT_ST_RNN_ID);

		} else {

			FC_LPORT_DBG(lport, "Received an READY event "

				     "on port (%6x) for the directory "
@@ -1031,13 +1028,13 @@ static void fc_lport_ns_resp(struct fc_seq *sp, struct fc_frame *fp, 
	    ntohs(ct->ct_cmd) == FC_FS_ACC)

		switch (lport->state) {

		case LPORT_ST_RNN_ID:

			fc_lport_enter_rsnn_nn(lport);

			fc_lport_enter_ns(lport, LPORT_ST_RSNN_NN);

			break;

		case LPORT_ST_RSNN_NN:

			fc_lport_enter_rspn_id(lport);

			fc_lport_enter_ns(lport, LPORT_ST_RSPN_ID);

			break;

		case LPORT_ST_RSPN_ID:

			fc_lport_enter_rft_id(lport);

			fc_lport_enter_ns(lport, LPORT_ST_RFT_ID);

			break;

		case LPORT_ST_RFT_ID:

			fc_lport_enter_scr(lport);
@@ -1130,133 +1127,62 @@ static void fc_lport_enter_scr(struct fc_lport *lport) 
}



/**

 * fc_lport_enter_rft_id() - Register FC4-types with the name server

 * fc_lport_enter_ns() - register some object with the name server

 * @lport: Fibre Channel local port to register

 *

 * Locking Note: The lport lock is expected to be held before calling

 * this routine.

 */

static void fc_lport_enter_rft_id(struct fc_lport *lport)

{

	struct fc_frame *fp;

	struct fc_ns_fts *lps;

	int i;



	FC_LPORT_DBG(lport, "Entered RFT_ID state from %s state\n",

		     fc_lport_state(lport));



	fc_lport_state_enter(lport, LPORT_ST_RFT_ID);



	lps = &lport->fcts;

	i = sizeof(lps->ff_type_map) / sizeof(lps->ff_type_map[0]);

	while (--i >= 0)

		if (ntohl(lps->ff_type_map[i]) != 0)

			break;

	if (i < 0) {

		/* nothing to register, move on to SCR */

		fc_lport_enter_scr(lport);

		return;

	}



	fp = fc_frame_alloc(lport, sizeof(struct fc_ct_hdr) +

			    sizeof(struct fc_ns_rft));

	if (!fp) {

		fc_lport_error(lport, fp);

		return;

	}



	if (!lport->tt.elsct_send(lport, FC_FID_DIR_SERV, fp, FC_NS_RFT_ID,

				  fc_lport_ns_resp,

				  lport, lport->e_d_tov))

		fc_lport_error(lport, fp);

}



/**

 * fc_rport_enter_rspn_id() - Register symbolic port name with the name server

 * @lport: Fibre Channel local port to register

 *

 * Locking Note: The lport lock is expected to be held before calling

 * this routine.

 */

static void fc_lport_enter_rspn_id(struct fc_lport *lport)

static void fc_lport_enter_ns(struct fc_lport *lport, enum fc_lport_state state)

{

	struct fc_frame *fp;

	enum fc_ns_req cmd;

	int size = sizeof(struct fc_ct_hdr);

	size_t len;



	FC_LPORT_DBG(lport, "Entered RSPN_ID state from %s state\n",

	FC_LPORT_DBG(lport, "Entered %s state from %s state\n",

		     fc_lport_state_names[state],

		     fc_lport_state(lport));



	fc_lport_state_enter(lport, LPORT_ST_RSPN_ID);

	fc_lport_state_enter(lport, state);



	switch (state) {

	case LPORT_ST_RNN_ID:

		cmd = FC_NS_RNN_ID;

		size += sizeof(struct fc_ns_rn_id);

		break;

	case LPORT_ST_RSNN_NN:

		len = strnlen(fc_host_symbolic_name(lport->host), 255);

	fp = fc_frame_alloc(lport, sizeof(struct fc_ct_hdr) +

			    sizeof(struct fc_ns_rspn) + len);

	if (!fp) {

		fc_lport_error(lport, fp);

		return;

	}



	if (!lport->tt.elsct_send(lport, FC_FID_DIR_SERV, fp, FC_NS_RSPN_ID,

				  fc_lport_ns_resp,

				  lport, lport->e_d_tov))

		fc_lport_error(lport, fp);

}



/**

 * fc_rport_enter_rsnn_nn() - Register symbolic node name with the name server

 * @lport: Fibre Channel local port to register

 *

 * Locking Note: The lport lock is expected to be held before calling

 * this routine.

 */

static void fc_lport_enter_rsnn_nn(struct fc_lport *lport)

{

	struct fc_frame *fp;

	size_t len;



	FC_LPORT_DBG(lport, "Entered RSNN_NN state from %s state\n",

		     fc_lport_state(lport));



	fc_lport_state_enter(lport, LPORT_ST_RSNN_NN);



		/* if there is no symbolic name, skip to RFT_ID */

		if (!len)

			return fc_lport_enter_ns(lport, LPORT_ST_RFT_ID);

		cmd = FC_NS_RSNN_NN;

		size += sizeof(struct fc_ns_rsnn) + len;

		break;

	case LPORT_ST_RSPN_ID:

		len = strnlen(fc_host_symbolic_name(lport->host), 255);

	fp = fc_frame_alloc(lport, sizeof(struct fc_ct_hdr) +

			    sizeof(struct fc_ns_rsnn) + len);

	if (!fp) {

		fc_lport_error(lport, fp);

		/* if there is no symbolic name, skip to RFT_ID */

		if (!len)

			return fc_lport_enter_ns(lport, LPORT_ST_RFT_ID);

		cmd = FC_NS_RSPN_ID;

		size += sizeof(struct fc_ns_rspn) + len;

		break;

	case LPORT_ST_RFT_ID:

		cmd = FC_NS_RFT_ID;

		size += sizeof(struct fc_ns_rft);

		break;

	default:

		fc_lport_error(lport, NULL);

		return;

	}



	if (!lport->tt.elsct_send(lport, FC_FID_DIR_SERV, fp, FC_NS_RSNN_NN,

				  fc_lport_ns_resp,

				  lport, lport->e_d_tov))

		fc_lport_error(lport, fp);

}



/**

 * fc_rport_enter_rnn_id() - Register node name with the name server

 * @lport: Fibre Channel local port to register

 *

 * Locking Note: The lport lock is expected to be held before calling

 * this routine.

 */

static void fc_lport_enter_rnn_id(struct fc_lport *lport)

{

	struct fc_frame *fp;



	FC_LPORT_DBG(lport, "Entered RNN_ID state from %s state\n",

		     fc_lport_state(lport));



	fc_lport_state_enter(lport, LPORT_ST_RNN_ID);



	fp = fc_frame_alloc(lport, sizeof(struct fc_ct_hdr) +

			    sizeof(struct fc_ns_rn_id));

	fp = fc_frame_alloc(lport, size);

	if (!fp) {

		fc_lport_error(lport, fp);

		return;

	}



	if (!lport->tt.elsct_send(lport, FC_FID_DIR_SERV, fp, FC_NS_RNN_ID,

	if (!lport->tt.elsct_send(lport, FC_FID_DIR_SERV, fp, cmd,

				  fc_lport_ns_resp,

				  lport, lport->e_d_tov))

		fc_lport_error(lport, fp);
@@ -1324,16 +1250,10 @@ static void fc_lport_timeout(struct work_struct *work) 
		fc_lport_enter_dns(lport);

		break;

	case LPORT_ST_RNN_ID:

		fc_lport_enter_rnn_id(lport);

		break;

	case LPORT_ST_RSNN_NN:

		fc_lport_enter_rsnn_nn(lport);

		break;

	case LPORT_ST_RSPN_ID:

		fc_lport_enter_rspn_id(lport);

		break;

	case LPORT_ST_RFT_ID:

		fc_lport_enter_rft_id(lport);

		fc_lport_enter_ns(lport, lport->state);

		break;

	case LPORT_ST_SCR:

		fc_lport_enter_scr(lport);