Commit dcceeeb7 authored by Nilesh Javali's avatar Nilesh Javali Committed by Martin K. Petersen
Browse files

scsi: qedi: add module param to set ping packet size 



Default packet size is 0x400. For jumbo packets set to 0x2400.

Signed-off-by: default avatarNilesh Javali <nilesh.javali@cavium.com>
Reviewed-by: default avatarLee Duncan <lduncan@suse.com>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent cdd3ff87

drivers/scsi/qedi/qedi.h

+0 −1
Original line number Diff line number Diff line
@@ -63,7 +63,6 @@ struct qedi_endpoint; 
#define QEDI_LOCAL_PORT_INVALID	0xffff

#define TX_RX_RING		16

#define RX_RING			(TX_RX_RING - 1)

#define LL2_SINGLE_BUF_SIZE	0x400

#define QEDI_PAGE_ALIGN(addr)	ALIGN(addr, QEDI_PAGE_SIZE)

#define QEDI_PAGE_MASK		(~((QEDI_PAGE_SIZE) - 1))

drivers/scsi/qedi/qedi_main.c

+9 −4
Original line number Diff line number Diff line
@@ -44,6 +44,11 @@ module_param(qedi_io_tracing, uint, 0644); 
MODULE_PARM_DESC(qedi_io_tracing,

		 " Enable logging of SCSI requests/completions into trace buffer. (default off).");



uint qedi_ll2_buf_size = 0x400;

module_param(qedi_ll2_buf_size, uint, 0644);

MODULE_PARM_DESC(qedi_ll2_buf_size,

		 "parameter to set ping packet size, default - 0x400, Jumbo packets - 0x2400.");



const struct qed_iscsi_ops *qedi_ops;

static struct scsi_transport_template *qedi_scsi_transport;

static struct pci_driver qedi_pci_driver;
@@ -228,7 +233,7 @@ static int __qedi_alloc_uio_rings(struct qedi_uio_dev *udev) 
	}



	/* Allocating memory for Tx/Rx pkt buffer */

	udev->ll2_buf_size = TX_RX_RING * LL2_SINGLE_BUF_SIZE;

	udev->ll2_buf_size = TX_RX_RING * qedi_ll2_buf_size;

	udev->ll2_buf_size = QEDI_PAGE_ALIGN(udev->ll2_buf_size);

	udev->ll2_buf = (void *)__get_free_pages(GFP_KERNEL | __GFP_COMP |

						 __GFP_ZERO, 2);
@@ -283,7 +288,7 @@ static int qedi_alloc_uio_rings(struct qedi_ctx *qedi) 
	qedi->udev = udev;



	udev->tx_pkt = udev->ll2_buf;

	udev->rx_pkt = udev->ll2_buf + LL2_SINGLE_BUF_SIZE;

	udev->rx_pkt = udev->ll2_buf + qedi_ll2_buf_size;

	return 0;



 err_uctrl:
@@ -752,8 +757,8 @@ static int qedi_ll2_process_skb(struct qedi_ctx *qedi, struct sk_buff *skb, 


	udev = qedi->udev;

	uctrl = udev->uctrl;

	pkt = udev->rx_pkt + (uctrl->hw_rx_prod * LL2_SINGLE_BUF_SIZE);

	len = min_t(u32, skb->len, (u32)LL2_SINGLE_BUF_SIZE);

	pkt = udev->rx_pkt + (uctrl->hw_rx_prod * qedi_ll2_buf_size);

	len = min_t(u32, skb->len, (u32)qedi_ll2_buf_size);

	memcpy(pkt, skb->data, len);



	memset(&rxbd, 0, sizeof(rxbd));