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| author | Russell King (Oracle) <rmk+kernel@armlinux.org.uk> | 2023-05-10 11:15:53 +0100 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2023-05-11 13:05:07 +0200 |
| commit | f00ba4f41acc050c959803f290a0f0c03dc0da5c (patch) | |
| tree | cfe20663c24c1b59f9f3d6ba870b09d67efd4a34 /drivers/net/ethernet/marvell | |
| parent | b0bd1b07c3add928e33282a52ad64a3f011d4fb7 (diff) | |
| download | linux-f00ba4f41acc050c959803f290a0f0c03dc0da5c.tar.gz linux-f00ba4f41acc050c959803f290a0f0c03dc0da5c.tar.bz2 linux-f00ba4f41acc050c959803f290a0f0c03dc0da5c.zip | |
net: mvneta: use buf->type to determine whether to dma-unmap
Now that we use a different buffer type for TSO headers, we can use
buf->type to determine whether the original buffer was DMA-mapped or
not. The rules are:
MVNETA_TYPE_XDP_TX - from a DMA pool, no unmap is required
MVNETA_TYPE_XDP_NDO - dma_map_single()'d
MVNETA_TYPE_SKB - normal skbuff, dma_map_single()'d
MVNETA_TYPE_TSO - from the TSO buffer area
This means we only need to call dma_unmap_single() on the XDP_NDO and
SKB types of buffer, and we no longer need the private IS_TSO_HEADER()
which relies on the TSO region being contiguously allocated.
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'drivers/net/ethernet/marvell')
| -rw-r--r-- | drivers/net/ethernet/marvell/mvneta.c | 11 |
1 files changed, 4 insertions, 7 deletions
diff --git a/drivers/net/ethernet/marvell/mvneta.c b/drivers/net/ethernet/marvell/mvneta.c index c05649f33d18..c23d75af65ee 100644 --- a/drivers/net/ethernet/marvell/mvneta.c +++ b/drivers/net/ethernet/marvell/mvneta.c @@ -364,10 +364,6 @@ MVNETA_SKB_HEADROOM)) #define MVNETA_MAX_RX_BUF_SIZE (PAGE_SIZE - MVNETA_SKB_PAD) -#define IS_TSO_HEADER(txq, addr) \ - ((addr >= txq->tso_hdrs_phys) && \ - (addr < txq->tso_hdrs_phys + txq->size * TSO_HEADER_SIZE)) - #define MVNETA_RX_GET_BM_POOL_ID(rxd) \ (((rxd)->status & MVNETA_RXD_BM_POOL_MASK) >> MVNETA_RXD_BM_POOL_SHIFT) @@ -1879,8 +1875,8 @@ static void mvneta_txq_bufs_free(struct mvneta_port *pp, mvneta_txq_inc_get(txq); - if (!IS_TSO_HEADER(txq, tx_desc->buf_phys_addr) && - buf->type != MVNETA_TYPE_XDP_TX) + if (buf->type == MVNETA_TYPE_XDP_NDO || + buf->type == MVNETA_TYPE_SKB) dma_unmap_single(pp->dev->dev.parent, tx_desc->buf_phys_addr, tx_desc->data_size, DMA_TO_DEVICE); @@ -2728,8 +2724,9 @@ static void mvneta_release_descs(struct mvneta_port *pp, for (i = num; i >= 0; i--) { struct mvneta_tx_desc *tx_desc = txq->descs + desc_idx; + struct mvneta_tx_buf *buf = &txq->buf[desc_idx]; - if (!IS_TSO_HEADER(txq, tx_desc->buf_phys_addr)) + if (buf->type == MVNETA_TYPE_SKB) dma_unmap_single(pp->dev->dev.parent, tx_desc->buf_phys_addr, tx_desc->data_size, |