Revert "net: stmmac: set PP_FLAG_DMA_SYNC_DEV only if XDP is enabled"

This reverts commit b514c47ebf41a6536551ed28a05758036e6eca7c.

The commit describes that we don't have to sync the page when
recycling, and it tries to optimize that case. But we do need
to sync after allocation. Recycling side should be changed to
pass the right sync size instead.

Fixes: b514c47ebf41 ("net: stmmac: set PP_FLAG_DMA_SYNC_DEV only if XDP is enabled")
Reported-by: Jon Hunter <jonathanh@nvidia.com>
Link: https://lore.kernel.org/20241004070846.2502e9ea@kernel.org
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Reviewed-by: Furong Xu <0x1207@gmail.com>
Link: https://patch.msgid.link/20241004142115.910876-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index e2140482270a880d937e4353b9e8b1a235490d4e..d3895d7eecfc52785b27abc7f5f5bd29117f3648 100644 (file)
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -2035,7 +2035,7 @@ static int __alloc_dma_rx_desc_resources(struct stmmac_priv *priv,
        rx_q->queue_index = queue;
        rx_q->priv_data = priv;
 
-       pp_params.flags = PP_FLAG_DMA_MAP | (xdp_prog ? PP_FLAG_DMA_SYNC_DEV : 0);
+       pp_params.flags = PP_FLAG_DMA_MAP | PP_FLAG_DMA_SYNC_DEV;
        pp_params.pool_size = dma_conf->dma_rx_size;
        num_pages = DIV_ROUND_UP(dma_conf->dma_buf_sz, PAGE_SIZE);
        pp_params.order = ilog2(num_pages);