gve: add netmem TX support to GVE DQO-RDA mode

Use netmem_dma_*() helpers in gve_tx_dqo.c DQO-RDA paths to
enable netmem TX support in that mode.

Declare support for netmem TX in GVE DQO-RDA mode.

Signed-off-by: Mina Almasry <almasrymina@google.com>
Acked-by: Harshitha Ramamurthy <hramamurthy@google.com>
Link: https://patch.msgid.link/20250508004830.4100853-8-almasrymina@google.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

diff --git a/drivers/net/ethernet/google/gve/gve_main.c b/drivers/net/ethernet/google/gve/gve_main.c
index 446e4b6fd3f177d8f1d192f18f5fb6af5e395ced..e1ffbd561fac635eaa979fabcac922ee05f732bd 100644 (file)
--- a/drivers/net/ethernet/google/gve/gve_main.c
+++ b/drivers/net/ethernet/google/gve/gve_main.c
@@ -2659,6 +2659,9 @@ static int gve_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
        if (err)
                goto abort_with_wq;
 
+       if (!gve_is_gqi(priv) && !gve_is_qpl(priv))
+               dev->netmem_tx = true;
+
        err = register_netdev(dev);
        if (err)
                goto abort_with_gve_init;

diff --git a/drivers/net/ethernet/google/gve/gve_tx_dqo.c b/drivers/net/ethernet/google/gve/gve_tx_dqo.c
index 2eba868d80370a908ea70b1f6c1c85081d180508..a27f1574a733704b1f78e73133a9cec301993038 100644 (file)
--- a/drivers/net/ethernet/google/gve/gve_tx_dqo.c
+++ b/drivers/net/ethernet/google/gve/gve_tx_dqo.c
@@ -660,7 +660,8 @@ static int gve_tx_add_skb_no_copy_dqo(struct gve_tx_ring *tx,
                        goto err;
 
                dma_unmap_len_set(pkt, len[pkt->num_bufs], len);
-               dma_unmap_addr_set(pkt, dma[pkt->num_bufs], addr);
+               netmem_dma_unmap_addr_set(skb_frag_netmem(frag), pkt,
+                                         dma[pkt->num_bufs], addr);
                ++pkt->num_bufs;
 
                gve_tx_fill_pkt_desc_dqo(tx, desc_idx, skb, len, addr,
@@ -1038,8 +1039,9 @@ static void gve_unmap_packet(struct device *dev,
        dma_unmap_single(dev, dma_unmap_addr(pkt, dma[0]),
                         dma_unmap_len(pkt, len[0]), DMA_TO_DEVICE);
        for (i = 1; i < pkt->num_bufs; i++) {
-               dma_unmap_page(dev, dma_unmap_addr(pkt, dma[i]),
-                              dma_unmap_len(pkt, len[i]), DMA_TO_DEVICE);
+               netmem_dma_unmap_page_attrs(dev, dma_unmap_addr(pkt, dma[i]),
+                                           dma_unmap_len(pkt, len[i]),
+                                           DMA_TO_DEVICE, 0);
        }
        pkt->num_bufs = 0;
 }