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Enable the sharing of dma mappings by moving them out from the buffer pool. Instead we put each dma mapped umem region in a list in the umem structure. If dma has already been mapped for this umem and device, it is not mapped again and the existing dma mappings are reused. Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Björn Töpel <bjorn.topel@intel.com> Link: https://lore.kernel.org/bpf/1598603189-32145-9-git-send-email-magnus.karlsson@intel.com
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Original file line number | Diff line number | Diff line change |
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@@ -30,6 +30,7 @@ struct xdp_umem { | |
u8 flags; | ||
int id; | ||
bool zc; | ||
struct list_head xsk_dma_list; | ||
}; | ||
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struct xsk_map { | ||
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