Re: [PATCH] qla2xxx: Split qla2x00_configure_local_loop()

[Himanshu Madhani <himanshu.madhani@oracle.com>]

On 4/5/20 5:59 PM, Bart Van Assche wrote:
> The size of the function qla2x00_configure_local_loop() hurts its
> readability. Hence split that function. This patch does not change
> any functionality.
> 
> Cc: Nilesh Javali <njavali@marvell.com>
> Cc: Himanshu Madhani <hmadhani@marvell.com>
> Cc: Quinn Tran <qutran@marvell.com>
> Cc: Martin Wilck <mwilck@suse.com>
> Cc: Daniel Wagner <dwagner@suse.de>
> Cc: Roman Bolshakov <r.bolshakov@yadro.com>
> Signed-off-by: Bart Van Assche <bvanassche@acm.org>
> ---
>   drivers/scsi/qla2xxx/qla_init.c | 92 ++++++++++++++++++---------------
>   1 file changed, 50 insertions(+), 42 deletions(-)
> 
> diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c
> index 5b2deaa730bf..80390d3f3236 100644
> --- a/drivers/scsi/qla2xxx/qla_init.c
> +++ b/drivers/scsi/qla2xxx/qla_init.c
> @@ -5081,6 +5081,54 @@ qla2x00_configure_loop(scsi_qla_host_t *vha)
>   	return (rval);
>   }
>   
> +static int qla2x00_configure_n2n_loop(scsi_qla_host_t *vha)
> +{
> +	struct qla_hw_data *ha = vha->hw;
> +	unsigned long flags;
> +	fc_port_t *fcport;
> +	int rval;
> +
> +	if (test_and_clear_bit(N2N_LOGIN_NEEDED, &vha->dpc_flags)) {
> +		/* borrowing */
> +		u32 *bp, sz;
> +
> +		memset(ha->init_cb, 0, ha->init_cb_size);
> +		sz = min_t(int, sizeof(struct els_plogi_payload),
> +			   ha->init_cb_size);
> +		rval = qla24xx_get_port_login_templ(vha, ha->init_cb_dma,
> +						    ha->init_cb, sz);
> +		if (rval == QLA_SUCCESS) {
> +			__be32 *q = &ha->plogi_els_payld.data[0];
> +
> +			bp = (uint32_t *)ha->init_cb;
> +			cpu_to_be32_array(q, bp, sz / 4);
> +			memcpy(bp, q, sizeof(ha->plogi_els_payld.data));
> +		} else {
> +			ql_dbg(ql_dbg_init, vha, 0x00d1,
> +			       "PLOGI ELS param read fail.\n");
> +			goto skip_login;
> +		}
> +	}
> +
> +	list_for_each_entry(fcport, &vha->vp_fcports, list) {
> +		if (fcport->n2n_flag) {
> +			qla24xx_fcport_handle_login(vha, fcport);
> +			return QLA_SUCCESS;
> +		}
> +	}
> +
> +skip_login:
> +	spin_lock_irqsave(&vha->work_lock, flags);
> +	vha->scan.scan_retry++;
> +	spin_unlock_irqrestore(&vha->work_lock, flags);
> +
> +	if (vha->scan.scan_retry < MAX_SCAN_RETRIES) {
> +		set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
> +		set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
> +	}
> +	return QLA_FUNCTION_FAILED;
> +}
> +
>   /*
>    * qla2x00_configure_local_loop
>    *	Updates Fibre Channel Device Database with local loop devices.
> @@ -5098,7 +5146,6 @@ qla2x00_configure_local_loop(scsi_qla_host_t *vha)
>   	int		found_devs;
>   	int		found;
>   	fc_port_t	*fcport, *new_fcport;
> -
>   	uint16_t	index;
>   	uint16_t	entries;
>   	struct gid_list_info *gid;
> @@ -5108,47 +5155,8 @@ qla2x00_configure_local_loop(scsi_qla_host_t *vha)
>   	unsigned long flags;
>   
>   	/* Inititae N2N login. */
> -	if (N2N_TOPO(ha)) {
> -		if (test_and_clear_bit(N2N_LOGIN_NEEDED, &vha->dpc_flags)) {
> -			/* borrowing */
> -			u32 *bp, sz;
> -
> -			memset(ha->init_cb, 0, ha->init_cb_size);
> -			sz = min_t(int, sizeof(struct els_plogi_payload),
> -			    ha->init_cb_size);
> -			rval = qla24xx_get_port_login_templ(vha,
> -			    ha->init_cb_dma, (void *)ha->init_cb, sz);
> -			if (rval == QLA_SUCCESS) {
> -				__be32 *q = &ha->plogi_els_payld.data[0];
> -
> -				bp = (uint32_t *)ha->init_cb;
> -				cpu_to_be32_array(q, bp, sz / 4);
> -
> -				memcpy(bp, q, sizeof(ha->plogi_els_payld.data));
> -			} else {
> -				ql_dbg(ql_dbg_init, vha, 0x00d1,
> -				    "PLOGI ELS param read fail.\n");
> -				goto skip_login;
> -			}
> -		}
> -
> -		list_for_each_entry(fcport, &vha->vp_fcports, list) {
> -			if (fcport->n2n_flag) {
> -				qla24xx_fcport_handle_login(vha, fcport);
> -				return QLA_SUCCESS;
> -			}
> -		}
> -skip_login:
> -		spin_lock_irqsave(&vha->work_lock, flags);
> -		vha->scan.scan_retry++;
> -		spin_unlock_irqrestore(&vha->work_lock, flags);
> -
> -		if (vha->scan.scan_retry < MAX_SCAN_RETRIES) {
> -			set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
> -			set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
> -		}
> -		return QLA_FUNCTION_FAILED;
> -	}
> +	if (N2N_TOPO(ha))
> +		return qla2x00_configure_n2n_loop(vha);
>   
>   	found_devs = 0;
>   	new_fcport = NULL;
> 

Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>

-- Himanshu