diff options
| author | Kal Conley <[email protected]> | 2023-04-23 20:01:56 +0200 |
|---|---|---|
| committer | Daniel Borkmann <[email protected]> | 2023-04-27 22:24:51 +0200 |
| commit | 6ec7be9a2d2b09815f69fc2183ec31857eaa6e27 (patch) | |
| tree | 6bf5f263e108d9ec9e418a2d088de890834f700f /include | |
| 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 <[email protected]>
Signed-off-by: Daniel Borkmann <[email protected]>
Reviewed-by: Xuan Zhuo <[email protected]>
Acked-by: Magnus Karlsson <[email protected]>
Link: https://lore.kernel.org/bpf/[email protected]
Diffstat (limited to 'include')
| -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); } |