diff options
| author | Kal Conley <kal.conley@dectris.com> | 2023-04-23 20:01:56 +0200 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2023-04-27 22:24:51 +0200 |
| commit | 6ec7be9a2d2b09815f69fc2183ec31857eaa6e27 (patch) | |
| tree | 6bf5f263e108d9ec9e418a2d088de890834f700f /include/net/xsk_buff_pool.h | |
| parent | a4644119208444f84d9ffcd4d0af630046c2de98 (diff) | |
xsk: Use pool->dma_pages to check for DMA
Compare pool->dma_pages instead of pool->dma_pages_cnt to check for an
active DMA mapping. pool->dma_pages needs to be read anyway to access
the map so this compiles to more efficient code.
Signed-off-by: Kal Conley <kal.conley@dectris.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Acked-by: Magnus Karlsson <magnus.karlsson@intel.com>
Link: https://lore.kernel.org/bpf/20230423180157.93559-1-kal.conley@dectris.com
Diffstat (limited to 'include/net/xsk_buff_pool.h')
| -rw-r--r-- | include/net/xsk_buff_pool.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/net/xsk_buff_pool.h b/include/net/xsk_buff_pool.h index d318c769b445..a8d7b8a3688a 100644 --- a/include/net/xsk_buff_pool.h +++ b/include/net/xsk_buff_pool.h @@ -180,7 +180,7 @@ static inline bool xp_desc_crosses_non_contig_pg(struct xsk_buff_pool *pool, if (likely(!cross_pg)) return false; - return pool->dma_pages_cnt && + return pool->dma_pages && !(pool->dma_pages[addr >> PAGE_SHIFT] & XSK_NEXT_PG_CONTIG_MASK); } |