diff options
| author |   Madalin Bucur <madalin.bucur@nxp.com> | 2019-10-31 16:37:52 +0200 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2019-10-31 12:13:34 -0700 |
| commit | 7689d82c4585cf2047801b36f9a78410c8237a25 (patch) | |
| tree | 56c91bba3ed3cdfba315cb25d889951caa75d554 /drivers/net/ethernet/freescale/dpaa/dpaa_eth.c | |
| parent | dpaa_eth: simplify variables used in dpaa_cleanup_tx_fd() (diff) | |
| download | linux-dev-7689d82c4585cf2047801b36f9a78410c8237a25.tar.xz linux-dev-7689d82c4585cf2047801b36f9a78410c8237a25.zip | |
dpaa_eth: use fd information in dpaa_cleanup_tx_fd()
Instead of reading skb fields, use information from the DPAA frame
descriptor.
Signed-off-by: Madalin Bucur <madalin.bucur@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/freescale/dpaa/dpaa_eth.c')
| -rw-r--r-- | drivers/net/ethernet/freescale/dpaa/dpaa_eth.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c b/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c index f0b5da50a4a5..a278651c81f6 100644 --- a/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c +++ b/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c @@ -1588,13 +1588,10 @@ static struct sk_buff *dpaa_cleanup_tx_fd(const struct dpaa_priv *priv, void *vaddr = phys_to_virt(addr); const struct qm_sg_entry *sgt; struct sk_buff *skb; - int nr_frags, i; u64 ns; - - skb = *(struct sk_buff **)vaddr; + int i; if (unlikely(qm_fd_get_format(fd) == qm_fd_sg)) { - nr_frags = skb_shinfo(skb)->nr_frags; dma_unmap_single(priv->tx_dma_dev, addr, qm_fd_get_offset(fd) + DPAA_SGT_SIZE, dma_dir); @@ -1609,7 +1606,8 @@ static struct sk_buff *dpaa_cleanup_tx_fd(const struct dpaa_priv *priv, qm_sg_entry_get_len(&sgt[0]), dma_dir); /* remaining pages were mapped with skb_frag_dma_map() */ - for (i = 1; i <= nr_frags; i++) { + for (i = 1; (i < DPAA_SGT_MAX_ENTRIES) && + !qm_sg_entry_is_final(&sgt[i - 1]); i++) { WARN_ON(qm_sg_entry_is_ext(&sgt[i])); dma_unmap_page(priv->tx_dma_dev, qm_sg_addr(&sgt[i]), @@ -1617,9 +1615,12 @@ static struct sk_buff *dpaa_cleanup_tx_fd(const struct dpaa_priv *priv, } } else { dma_unmap_single(priv->tx_dma_dev, addr, - skb_tail_pointer(skb) - (u8 *)vaddr, dma_dir); + priv->tx_headroom + qm_fd_get_length(fd), + dma_dir); } + skb = *(struct sk_buff **)vaddr; + /* DMA unmapping is required before accessing the HW provided info */ if (ts && priv->tx_tstamp && skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) { |