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

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

Signed-off-by: Nilesh Javali <nilesh.javali@cavium.com>
Reviewed-by: Lee Duncan <lduncan@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Nilesh Javali 2018-11-21 01:25:21 -08:00 committed by Martin K. Petersen
parent cdd3ff87f1
commit dcceeeb71f
2 changed files with 9 additions and 5 deletions
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1
drivers/scsi/qedi/qedi.h
View File

@ -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))

13
drivers/scsi/qedi/qedi_main.c
View File

@ -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));