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Date: Wed, 26 Jun 2019 09:31:50 +0000
From: Manish Chopra <manishc@...vell.com>
To: Benjamin Poirier <bpoirier@...e.com>,
GR-Linux-NIC-Dev <GR-Linux-NIC-Dev@...vell.com>,
"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: RE: [PATCH net-next 04/16] qlge: Remove bq_desc.maplen
> -----Original Message-----
> From: Benjamin Poirier <bpoirier@...e.com>
> Sent: Monday, June 17, 2019 1:19 PM
> To: Manish Chopra <manishc@...vell.com>; GR-Linux-NIC-Dev <GR-Linux-
> NIC-Dev@...vell.com>; netdev@...r.kernel.org
> Subject: [PATCH net-next 04/16] qlge: Remove bq_desc.maplen
>
> The size of the mapping is known statically in all cases, there's no need to save
> it at runtime. Remove this member.
>
> Signed-off-by: Benjamin Poirier <bpoirier@...e.com>
> ---
> drivers/net/ethernet/qlogic/qlge/qlge.h | 1 -
> drivers/net/ethernet/qlogic/qlge/qlge_main.c | 43 +++++++-------------
> 2 files changed, 15 insertions(+), 29 deletions(-)
>
> diff --git a/drivers/net/ethernet/qlogic/qlge/qlge.h
> b/drivers/net/ethernet/qlogic/qlge/qlge.h
> index ba61b4559dd6..f32da8c7679f 100644
> --- a/drivers/net/ethernet/qlogic/qlge/qlge.h
> +++ b/drivers/net/ethernet/qlogic/qlge/qlge.h
> @@ -1373,7 +1373,6 @@ struct bq_desc {
> __le64 *addr;
> u32 index;
> DEFINE_DMA_UNMAP_ADDR(mapaddr);
> - DEFINE_DMA_UNMAP_LEN(maplen);
> };
>
> #define QL_TXQ_IDX(qdev, skb) (smp_processor_id()%(qdev->tx_ring_count))
> diff --git a/drivers/net/ethernet/qlogic/qlge/qlge_main.c
> b/drivers/net/ethernet/qlogic/qlge/qlge_main.c
> index 9df06ad3fb93..25dbaa9cc55d 100644
> --- a/drivers/net/ethernet/qlogic/qlge/qlge_main.c
> +++ b/drivers/net/ethernet/qlogic/qlge/qlge_main.c
> @@ -1108,8 +1108,6 @@ static void ql_update_lbq(struct ql_adapter *qdev,
> struct rx_ring *rx_ring)
> map = lbq_desc->p.pg_chunk.map +
> lbq_desc->p.pg_chunk.offset;
> dma_unmap_addr_set(lbq_desc, mapaddr, map);
> - dma_unmap_len_set(lbq_desc, maplen,
> - qdev->lbq_buf_size);
> *lbq_desc->addr = cpu_to_le64(map);
>
> pci_dma_sync_single_for_device(qdev->pdev, map,
> @@ -1177,8 +1175,6 @@ static void ql_update_sbq(struct ql_adapter *qdev,
> struct rx_ring *rx_ring)
> return;
> }
> dma_unmap_addr_set(sbq_desc, mapaddr,
> map);
> - dma_unmap_len_set(sbq_desc, maplen,
> - rx_ring->sbq_buf_size);
> *sbq_desc->addr = cpu_to_le64(map);
> }
>
> @@ -1598,14 +1594,14 @@ static void ql_process_mac_rx_skb(struct
> ql_adapter *qdev,
>
> pci_dma_sync_single_for_cpu(qdev->pdev,
> dma_unmap_addr(sbq_desc, mapaddr),
> - dma_unmap_len(sbq_desc, maplen),
> + rx_ring->sbq_buf_size,
> PCI_DMA_FROMDEVICE);
>
> skb_put_data(new_skb, skb->data, length);
>
> pci_dma_sync_single_for_device(qdev->pdev,
> dma_unmap_addr(sbq_desc, mapaddr),
> - dma_unmap_len(sbq_desc, maplen),
> + rx_ring->sbq_buf_size,
> PCI_DMA_FROMDEVICE);
> skb = new_skb;
>
> @@ -1727,8 +1723,7 @@ static struct sk_buff *ql_build_rx_skb(struct
> ql_adapter *qdev,
> sbq_desc = ql_get_curr_sbuf(rx_ring);
> pci_unmap_single(qdev->pdev,
> dma_unmap_addr(sbq_desc, mapaddr),
> - dma_unmap_len(sbq_desc, maplen),
> - PCI_DMA_FROMDEVICE);
> + rx_ring->sbq_buf_size,
> PCI_DMA_FROMDEVICE);
> skb = sbq_desc->p.skb;
> ql_realign_skb(skb, hdr_len);
> skb_put(skb, hdr_len);
> @@ -1758,19 +1753,15 @@ static struct sk_buff *ql_build_rx_skb(struct
> ql_adapter *qdev,
> */
> sbq_desc = ql_get_curr_sbuf(rx_ring);
> pci_dma_sync_single_for_cpu(qdev->pdev,
> - dma_unmap_addr
> - (sbq_desc, mapaddr),
> - dma_unmap_len
> - (sbq_desc, maplen),
> +
> dma_unmap_addr(sbq_desc,
> + mapaddr),
> + rx_ring->sbq_buf_size,
> PCI_DMA_FROMDEVICE);
> skb_put_data(skb, sbq_desc->p.skb->data, length);
> pci_dma_sync_single_for_device(qdev->pdev,
> - dma_unmap_addr
> - (sbq_desc,
> - mapaddr),
> - dma_unmap_len
> - (sbq_desc,
> - maplen),
> +
> dma_unmap_addr(sbq_desc,
> + mapaddr),
> + rx_ring->sbq_buf_size,
> PCI_DMA_FROMDEVICE);
> } else {
> netif_printk(qdev, rx_status, KERN_DEBUG, qdev-
> >ndev, @@ -1781,10 +1772,8 @@ static struct sk_buff *ql_build_rx_skb(struct
> ql_adapter *qdev,
> ql_realign_skb(skb, length);
> skb_put(skb, length);
> pci_unmap_single(qdev->pdev,
> - dma_unmap_addr(sbq_desc,
> - mapaddr),
> - dma_unmap_len(sbq_desc,
> - maplen),
> + dma_unmap_addr(sbq_desc,
> mapaddr),
> + rx_ring->sbq_buf_size,
> PCI_DMA_FROMDEVICE);
> sbq_desc->p.skb = NULL;
> }
> @@ -1822,9 +1811,8 @@ static struct sk_buff *ql_build_rx_skb(struct
> ql_adapter *qdev,
> return NULL;
> }
> pci_unmap_page(qdev->pdev,
> - dma_unmap_addr(lbq_desc,
> - mapaddr),
> - dma_unmap_len(lbq_desc, maplen),
> + dma_unmap_addr(lbq_desc, mapaddr),
> + qdev->lbq_buf_size,
> PCI_DMA_FROMDEVICE);
> skb_reserve(skb, NET_IP_ALIGN);
> netif_printk(qdev, rx_status, KERN_DEBUG, qdev-
> >ndev, @@ -1858,8 +1846,7 @@ static struct sk_buff *ql_build_rx_skb(struct
> ql_adapter *qdev,
> sbq_desc = ql_get_curr_sbuf(rx_ring);
> pci_unmap_single(qdev->pdev,
> dma_unmap_addr(sbq_desc, mapaddr),
> - dma_unmap_len(sbq_desc, maplen),
> - PCI_DMA_FROMDEVICE);
> + rx_ring->sbq_buf_size,
> PCI_DMA_FROMDEVICE);
> if (!(ib_mac_rsp->flags4 & IB_MAC_IOCB_RSP_HS)) {
> /*
> * This is an non TCP/UDP IP frame, so @@ -2820,7
> +2807,7 @@ static void ql_free_sbq_buffers(struct ql_adapter *qdev, struct
> rx_ring *rx_ring
> if (sbq_desc->p.skb) {
> pci_unmap_single(qdev->pdev,
> dma_unmap_addr(sbq_desc,
> mapaddr),
> - dma_unmap_len(sbq_desc, maplen),
> + rx_ring->sbq_buf_size,
> PCI_DMA_FROMDEVICE);
> dev_kfree_skb(sbq_desc->p.skb);
> sbq_desc->p.skb = NULL;
> --
> 2.21.0
Acked-by: Manish Chopra <manishc@...vell.com>
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