On 11/21/18 1:25 AM, Nilesh Javali wrote:
> From: Manish Rangankar <manish.rangan...@cavium.com>
>
> 1. Removed logic to update HW producer index in interrupt context.
> 2. Update HW producer index after UIO ring and buffer gets initialized.
>
> Signed-off-by: Manish Rangankar <manish.rangan...@cavium.com>
> ---
> drivers/scsi/qedi/qedi_main.c | 31 +++++++++++++++++++------------
> 1 file changed, 19 insertions(+), 12 deletions(-)
>
> diff --git a/drivers/scsi/qedi/qedi_main.c b/drivers/scsi/qedi/qedi_main.c
> index 8942f62..053a947 100644
> --- a/drivers/scsi/qedi/qedi_main.c
> +++ b/drivers/scsi/qedi/qedi_main.c
> @@ -665,7 +665,6 @@ static int qedi_ll2_rx(void *cookie, struct sk_buff *skb,
> u32 arg1, u32 arg2)
> struct qedi_uio_ctrl *uctrl;
> struct skb_work_list *work;
> struct ethhdr *eh;
> - u32 prod;
>
> if (!qedi) {
> QEDI_ERR(NULL, "qedi is NULL\n");
> @@ -724,17 +723,10 @@ static int qedi_ll2_rx(void *cookie, struct sk_buff
> *skb, u32 arg1, u32 arg2)
>
> spin_lock_bh(&qedi->ll2_lock);
> list_add_tail(&work->list, &qedi->ll2_skb_list);
> + spin_unlock_bh(&qedi->ll2_lock);
>
> - ++uctrl->hw_rx_prod_cnt;
> - prod = (uctrl->hw_rx_prod + 1) % RX_RING;
> - if (prod != uctrl->host_rx_cons) {
> - uctrl->hw_rx_prod = prod;
> - spin_unlock_bh(&qedi->ll2_lock);
> - wake_up_process(qedi->ll2_recv_thread);
> - return 0;
> - }
> + wake_up_process(qedi->ll2_recv_thread);
>
> - spin_unlock_bh(&qedi->ll2_lock);
> return 0;
> }
>
> @@ -749,6 +741,7 @@ static int qedi_ll2_process_skb(struct qedi_ctx *qedi,
> struct sk_buff *skb,
> u32 rx_bd_prod;
> void *pkt;
> int len = 0;
> + u32 prod;
>
> if (!qedi) {
> QEDI_ERR(NULL, "qedi is NULL\n");
> @@ -757,12 +750,16 @@ 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 * qedi_ll2_buf_size);
> +
> + ++uctrl->hw_rx_prod_cnt;
> + prod = (uctrl->hw_rx_prod + 1) % RX_RING;
> +
> + pkt = udev->rx_pkt + (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));
> - rxbd.rx_pkt_index = uctrl->hw_rx_prod;
> + rxbd.rx_pkt_index = prod;
> rxbd.rx_pkt_len = len;
> rxbd.vlan_id = vlan_id;
>
> @@ -773,6 +770,16 @@ static int qedi_ll2_process_skb(struct qedi_ctx *qedi,
> struct sk_buff *skb,
>
> memcpy(p_rxbd, &rxbd, sizeof(rxbd));
>
> + QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2,
> + "hw_rx_prod [%d] prod [%d] hw_rx_bd_prod [%d] rx_pkt_idx [%d]
> rx_len [%d].\n",
> + uctrl->hw_rx_prod, prod, uctrl->hw_rx_bd_prod,
> + rxbd.rx_pkt_index, rxbd.rx_pkt_len);
> + QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2,
> + "host_rx_cons [%d] hw_rx_bd_cons [%d].\n",
> + uctrl->host_rx_cons, uctrl->host_rx_bd_cons);
> +
> + uctrl->hw_rx_prod = prod;
> +
> /* notify the iscsiuio about new packet */
> uio_event_notify(&udev->qedi_uinfo);
>
>
Reviewed-by: Lee Duncan <ldun...@suse.com>
