diff options
| author | Breno Leitao <leitao@debian.org> | 2024-04-22 05:38:58 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2024-04-24 12:00:16 +0100 |
| commit | b209bd6d0bffb8991aba568e2d9a892c86a1a43c (patch) | |
| tree | 34aa57af4c04c8bb76ac9af6f9a271fc07a9e9de /drivers/net/ethernet/mediatek/mtk_eth_soc.c | |
| parent | ec24c06eb3126350cea6699eddb41d01a0134818 (diff) | |
net: mediatek: mtk_eth_sock: allocate dummy net_device dynamically
Embedding net_device into structures prohibits the usage of flexible
arrays in the net_device structure. For more details, see the discussion
at [1].
Un-embed the net_device from the private struct by converting it
into a pointer. Then use the leverage the new alloc_netdev_dummy()
helper to allocate and initialize dummy devices.
[1] https://lore.kernel.org/all/20240229225910.79e224cf@kernel.org/
Signed-off-by: Breno Leitao <leitao@debian.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/mediatek/mtk_eth_soc.c')
| -rw-r--r-- | drivers/net/ethernet/mediatek/mtk_eth_soc.c | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c index caa13b9cedff..d7a96dc11c07 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c @@ -1710,7 +1710,7 @@ static struct page_pool *mtk_create_page_pool(struct mtk_eth *eth, if (IS_ERR(pp)) return pp; - err = __xdp_rxq_info_reg(xdp_q, ð->dummy_dev, id, + err = __xdp_rxq_info_reg(xdp_q, eth->dummy_dev, id, eth->rx_napi.napi_id, PAGE_SIZE); if (err < 0) goto err_free_pp; @@ -4188,6 +4188,8 @@ static int mtk_free_dev(struct mtk_eth *eth) metadata_dst_free(eth->dsa_meta[i]); } + free_netdev(eth->dummy_dev); + return 0; } @@ -4983,9 +4985,14 @@ static int mtk_probe(struct platform_device *pdev) /* we run 2 devices on the same DMA ring so we need a dummy device * for NAPI to work */ - init_dummy_netdev(ð->dummy_dev); - netif_napi_add(ð->dummy_dev, ð->tx_napi, mtk_napi_tx); - netif_napi_add(ð->dummy_dev, ð->rx_napi, mtk_napi_rx); + eth->dummy_dev = alloc_netdev_dummy(0); + if (!eth->dummy_dev) { + err = -ENOMEM; + dev_err(eth->dev, "failed to allocated dummy device\n"); + goto err_unreg_netdev; + } + netif_napi_add(eth->dummy_dev, ð->tx_napi, mtk_napi_tx); + netif_napi_add(eth->dummy_dev, ð->rx_napi, mtk_napi_rx); platform_set_drvdata(pdev, eth); schedule_delayed_work(ð->reset.monitor_work, @@ -4993,6 +5000,8 @@ static int mtk_probe(struct platform_device *pdev) return 0; +err_unreg_netdev: + mtk_unreg_dev(eth); err_deinit_ppe: mtk_ppe_deinit(eth); mtk_mdio_cleanup(eth); |