> -----邮件原件----- > 发件人: Björn Töpel [mailto:bjorn.topel@xxxxxxxxx] > 发送时间: 2020年6月2日 19:27 > 收件人: Li,Rongqing <lirongqing@xxxxxxxxx>; intel-wired-lan > <intel-wired-lan@xxxxxxxxxxxxxxxx>; Netdev <netdev@xxxxxxxxxxxxxxx> > 抄送: bpf <bpf@xxxxxxxxxxxxxxx>; Karlsson, Magnus > <magnus.karlsson@xxxxxxxxx> > 主题: Re: [PATCH] i40e: fix wrong index in i40e_xsk_umem_dma_map > > On Tue, 2 Jun 2020 at 11:20, Li RongQing <lirongqing@xxxxxxxxx> wrote: > > > > Li, thanks for the patch! Good catch! > > Please add a proper description for the patch. The fix should be added to the > stable branches (5.7 and earlier). Note that this code was recently removed in > favor of the new AF_XDP buffer allocation scheme. > > Ok -LiRongQing > Björn > > > Fixes: 0a714186d3c0 "(i40e: add AF_XDP zero-copy Rx support)" > > Signed-off-by: Li RongQing <lirongqing@xxxxxxxxx> > > --- > > drivers/net/ethernet/intel/i40e/i40e_xsk.c | 4 ++-- > > 1 file changed, 2 insertions(+), 2 deletions(-) > > > > diff --git a/drivers/net/ethernet/intel/i40e/i40e_xsk.c > > b/drivers/net/ethernet/intel/i40e/i40e_xsk.c > > index 0b7d29192b2c..c926438118ea 100644 > > --- a/drivers/net/ethernet/intel/i40e/i40e_xsk.c > > +++ b/drivers/net/ethernet/intel/i40e/i40e_xsk.c > > @@ -37,9 +37,9 @@ static int i40e_xsk_umem_dma_map(struct i40e_vsi > > *vsi, struct xdp_umem *umem) > > > > out_unmap: > > for (j = 0; j < i; j++) { > > - dma_unmap_page_attrs(dev, umem->pages[i].dma, > PAGE_SIZE, > > + dma_unmap_page_attrs(dev, umem->pages[j].dma, > > + PAGE_SIZE, > > DMA_BIDIRECTIONAL, > I40E_RX_DMA_ATTR); > > - umem->pages[i].dma = 0; > > + umem->pages[j].dma = 0; > > } > > > > return -1; > > -- > > 2.16.2 > >
