diff options
| author |   Christoph Hellwig <hch@lst.de> | 2020-06-29 15:03:57 +0200 |
|---|---|---|
| committer |   Daniel Borkmann <daniel@iogearbox.net> | 2020-06-30 15:44:03 +0200 |
| commit | 91d5b70273267bbae6f5d1fb4cf3510bd31ef9ff (patch) | |
| tree | 9996f407555352be8720dc5773552e813f509a19 /net | |
| parent | dma-mapping: Add a new dma_need_sync API (diff) | |
| download | wireguard-linux-91d5b70273267bbae6f5d1fb4cf3510bd31ef9ff.tar.xz wireguard-linux-91d5b70273267bbae6f5d1fb4cf3510bd31ef9ff.zip | |
xsk: Replace the cheap_dma flag with a dma_need_sync flag
Invert the polarity and better name the flag so that the use case is
properly documented.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20200629130359.2690853-3-hch@lst.de
Diffstat (limited to 'net')
| -rw-r--r-- | net/xdp/xsk_buff_pool.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/net/xdp/xsk_buff_pool.c b/net/xdp/xsk_buff_pool.c index 540ed75e4482..9fe84c797a70 100644 --- a/net/xdp/xsk_buff_pool.c +++ b/net/xdp/xsk_buff_pool.c @@ -55,7 +55,6 @@ struct xsk_buff_pool *xp_create(struct page **pages, u32 nr_pages, u32 chunks, pool->free_heads_cnt = chunks; pool->headroom = headroom; pool->chunk_size = chunk_size; - pool->cheap_dma = true; pool->unaligned = unaligned; pool->frame_len = chunk_size - headroom - XDP_PACKET_HEADROOM; INIT_LIST_HEAD(&pool->free_list); @@ -195,7 +194,7 @@ int xp_dma_map(struct xsk_buff_pool *pool, struct device *dev, xp_check_dma_contiguity(pool); pool->dev = dev; - pool->cheap_dma = xp_check_cheap_dma(pool); + pool->dma_need_sync = !xp_check_cheap_dma(pool); return 0; } EXPORT_SYMBOL(xp_dma_map); @@ -280,7 +279,7 @@ struct xdp_buff *xp_alloc(struct xsk_buff_pool *pool) xskb->xdp.data = xskb->xdp.data_hard_start + XDP_PACKET_HEADROOM; xskb->xdp.data_meta = xskb->xdp.data; - if (!pool->cheap_dma) { + if (pool->dma_need_sync) { dma_sync_single_range_for_device(pool->dev, xskb->dma, 0, pool->frame_len, DMA_BIDIRECTIONAL); |