diff options
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/ethernet/freescale/enetc/enetc.c | 54 |
1 files changed, 24 insertions, 30 deletions
diff --git a/drivers/net/ethernet/freescale/enetc/enetc.c b/drivers/net/ethernet/freescale/enetc/enetc.c index c7f3c6e691a1..c4ff090f29ec 100644 --- a/drivers/net/ethernet/freescale/enetc/enetc.c +++ b/drivers/net/ethernet/freescale/enetc/enetc.c @@ -751,27 +751,35 @@ static struct enetc_rx_swbd *enetc_get_rx_buff(struct enetc_bdr *rx_ring, return rx_swbd; } +/* Reuse the current page without performing half-page buffer flipping */ static void enetc_put_rx_buff(struct enetc_bdr *rx_ring, struct enetc_rx_swbd *rx_swbd) { - if (likely(enetc_page_reusable(rx_swbd->page))) { - size_t buffer_size = ENETC_RXB_TRUESIZE - rx_ring->buffer_offset; + size_t buffer_size = ENETC_RXB_TRUESIZE - rx_ring->buffer_offset; + + enetc_reuse_page(rx_ring, rx_swbd); + dma_sync_single_range_for_device(rx_ring->dev, rx_swbd->dma, + rx_swbd->page_offset, + buffer_size, rx_swbd->dir); + + rx_swbd->page = NULL; +} + +/* Reuse the current page by performing half-page buffer flipping */ +static void enetc_flip_rx_buff(struct enetc_bdr *rx_ring, + struct enetc_rx_swbd *rx_swbd) +{ + if (likely(enetc_page_reusable(rx_swbd->page))) { rx_swbd->page_offset ^= ENETC_RXB_TRUESIZE; page_ref_inc(rx_swbd->page); - enetc_reuse_page(rx_ring, rx_swbd); - - /* sync for use by the device */ - dma_sync_single_range_for_device(rx_ring->dev, rx_swbd->dma, - rx_swbd->page_offset, - buffer_size, rx_swbd->dir); + enetc_put_rx_buff(rx_ring, rx_swbd); } else { dma_unmap_page(rx_ring->dev, rx_swbd->dma, PAGE_SIZE, rx_swbd->dir); + rx_swbd->page = NULL; } - - rx_swbd->page = NULL; } static struct sk_buff *enetc_map_rx_buff_to_skb(struct enetc_bdr *rx_ring, @@ -791,7 +799,7 @@ static struct sk_buff *enetc_map_rx_buff_to_skb(struct enetc_bdr *rx_ring, skb_reserve(skb, rx_ring->buffer_offset); __skb_put(skb, size); - enetc_put_rx_buff(rx_ring, rx_swbd); + enetc_flip_rx_buff(rx_ring, rx_swbd); return skb; } @@ -804,7 +812,7 @@ static void enetc_add_rx_buff_to_skb(struct enetc_bdr *rx_ring, int i, skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags, rx_swbd->page, rx_swbd->page_offset, size, ENETC_RXB_TRUESIZE); - enetc_put_rx_buff(rx_ring, rx_swbd); + enetc_flip_rx_buff(rx_ring, rx_swbd); } static bool enetc_check_bd_errors_and_consume(struct enetc_bdr *rx_ring, @@ -1142,20 +1150,6 @@ static void enetc_build_xdp_buff(struct enetc_bdr *rx_ring, u32 bd_status, } } -/* Reuse the current page without performing half-page buffer flipping */ -static void enetc_put_xdp_buff(struct enetc_bdr *rx_ring, - struct enetc_rx_swbd *rx_swbd) -{ - enetc_reuse_page(rx_ring, rx_swbd); - - dma_sync_single_range_for_device(rx_ring->dev, rx_swbd->dma, - rx_swbd->page_offset, - ENETC_RXB_DMA_SIZE_XDP, - rx_swbd->dir); - - rx_swbd->page = NULL; -} - /* Convert RX buffer descriptors to TX buffer descriptors. These will be * recycled back into the RX ring in enetc_clean_tx_ring. We need to scrub the * RX software BDs because the ownership of the buffer no longer belongs to the @@ -1194,8 +1188,8 @@ static void enetc_xdp_drop(struct enetc_bdr *rx_ring, int rx_ring_first, int rx_ring_last) { while (rx_ring_first != rx_ring_last) { - enetc_put_xdp_buff(rx_ring, - &rx_ring->rx_swbd[rx_ring_first]); + enetc_put_rx_buff(rx_ring, + &rx_ring->rx_swbd[rx_ring_first]); enetc_bdr_idx_inc(rx_ring, &rx_ring_first); } rx_ring->stats.xdp_drops++; @@ -1316,8 +1310,8 @@ static int enetc_clean_rx_ring_xdp(struct enetc_bdr *rx_ring, tmp_orig_i = orig_i; while (orig_i != i) { - enetc_put_rx_buff(rx_ring, - &rx_ring->rx_swbd[orig_i]); + enetc_flip_rx_buff(rx_ring, + &rx_ring->rx_swbd[orig_i]); enetc_bdr_idx_inc(rx_ring, &orig_i); } |