diff options
| author | Magnus Karlsson <magnus.karlsson@intel.com> | 2020-08-28 10:26:22 +0200 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2020-08-31 21:15:04 +0200 |
| commit | 921b68692abb4fd02237b6875b2056bc59435116 (patch) | |
| tree | 80597519bc9b2ec71dc485418bc0f6a6025d234b /net/xdp/xdp_umem.c | |
| parent | 7f7ffa4e9c38f01d380ed9df6adb238fd5e6eea5 (diff) | |
xsk: Enable sharing of dma mappings
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
Diffstat (limited to 'net/xdp/xdp_umem.c')
| -rw-r--r-- | net/xdp/xdp_umem.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/net/xdp/xdp_umem.c b/net/xdp/xdp_umem.c index 77604c30aa0f..a7227b447228 100644 --- a/net/xdp/xdp_umem.c +++ b/net/xdp/xdp_umem.c @@ -198,6 +198,7 @@ static int xdp_umem_reg(struct xdp_umem *umem, struct xdp_umem_reg *mr) umem->user = NULL; umem->flags = mr->flags; + INIT_LIST_HEAD(&umem->xsk_dma_list); refcount_set(&umem->users, 1); err = xdp_umem_account_pages(umem); |