From: Ilias Apalodimas ilias.apalodimas@linaro.org
[ Upstream commit d9496f3ecfe4823c1e12aecbcc29220147fa012c ]
bpf_xdp_adjust_head() can change the frame boundaries. Account for the potential shift properly by calculating the new offset before syncing the buffer to the device for XDP_TX
Fixes: ba2b232108d3 ("net: netsec: add XDP support") Signed-off-by: Ilias Apalodimas ilias.apalodimas@linaro.org Reviewed-by: Jakub Kicinski jakub.kicinski@netronome.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/ethernet/socionext/netsec.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/socionext/netsec.c b/drivers/net/ethernet/socionext/netsec.c index f9e6744d8fd6e..41ddd8fff2a73 100644 --- a/drivers/net/ethernet/socionext/netsec.c +++ b/drivers/net/ethernet/socionext/netsec.c @@ -847,8 +847,8 @@ static u32 netsec_xdp_queue_one(struct netsec_priv *priv, enum dma_data_direction dma_dir = page_pool_get_dma_dir(rx_ring->page_pool);
- dma_handle = page_pool_get_dma_addr(page) + - NETSEC_RXBUF_HEADROOM; + dma_handle = page_pool_get_dma_addr(page) + xdpf->headroom + + sizeof(*xdpf); dma_sync_single_for_device(priv->dev, dma_handle, xdpf->len, dma_dir); tx_desc.buf_type = TYPE_NETSEC_XDP_TX;