From: Breno Leitao <leitao@debian.org>
To: aleksander.lobakin@intel.com, kuba@kernel.org,
davem@davemloft.net, pabeni@redhat.com, edumazet@google.com,
elder@kernel.org, linux-arm-kernel@lists.infradead.org,
linux-mediatek@lists.infradead.org, nbd@nbd.name,
sean.wang@mediatek.com, Mark-MC.Lee@mediatek.com,
lorenzo@kernel.org, taras.chornyi@plvision.eu,
ath11k@lists.infradead.org, ath10k@lists.infradead.org,
linux-wireless@vger.kernel.org, geomatsi@gmail.com,
kvalo@kernel.org
Cc: quic_jjohnson@quicinc.com, leon@kernel.org,
dennis.dalessandro@cornelisnetworks.com,
linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
bpf@vger.kernel.org, Elad Nachman <enachman@marvell.com>
Subject: [PATCH net-next v4 3/9] net: marvell: prestera: allocate dummy net_device dynamically
Date: Tue, 9 Apr 2024 05:57:17 -0700 [thread overview]
Message-ID: <20240409125738.1824983-4-leitao@debian.org> (raw)
In-Reply-To: <20240409125738.1824983-1-leitao@debian.org>
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>
Acked-by: Elad Nachman <enachman@marvell.com>
---
.../net/ethernet/marvell/prestera/prestera_rxtx.c | 15 ++++++++++++---
1 file changed, 12 insertions(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/marvell/prestera/prestera_rxtx.c b/drivers/net/ethernet/marvell/prestera/prestera_rxtx.c
index cc2a9ae794be..39d9bf82c115 100644
--- a/drivers/net/ethernet/marvell/prestera/prestera_rxtx.c
+++ b/drivers/net/ethernet/marvell/prestera/prestera_rxtx.c
@@ -96,7 +96,7 @@ struct prestera_sdma {
struct dma_pool *desc_pool;
struct work_struct tx_work;
struct napi_struct rx_napi;
- struct net_device napi_dev;
+ struct net_device *napi_dev;
u32 map_addr;
u64 dma_mask;
/* protect SDMA with concurrent access from multiple CPUs */
@@ -654,13 +654,21 @@ static int prestera_sdma_switch_init(struct prestera_switch *sw)
if (err)
goto err_evt_register;
- init_dummy_netdev(&sdma->napi_dev);
+ sdma->napi_dev = alloc_netdev_dummy(0);
+ if (!sdma->napi_dev) {
+ dev_err(dev, "not able to initialize dummy device\n");
+ err = -ENOMEM;
+ goto err_alloc_dummy;
+ }
- netif_napi_add(&sdma->napi_dev, &sdma->rx_napi, prestera_sdma_rx_poll);
+ netif_napi_add(sdma->napi_dev, &sdma->rx_napi, prestera_sdma_rx_poll);
napi_enable(&sdma->rx_napi);
return 0;
+err_alloc_dummy:
+ prestera_hw_event_handler_unregister(sw, PRESTERA_EVENT_TYPE_RXTX,
+ prestera_rxtx_handle_event);
err_evt_register:
err_tx_init:
prestera_sdma_tx_fini(sdma);
@@ -677,6 +685,7 @@ static void prestera_sdma_switch_fini(struct prestera_switch *sw)
napi_disable(&sdma->rx_napi);
netif_napi_del(&sdma->rx_napi);
+ free_netdev(sdma->napi_dev);
prestera_hw_event_handler_unregister(sw, PRESTERA_EVENT_TYPE_RXTX,
prestera_rxtx_handle_event);
prestera_sdma_tx_fini(sdma);
--
2.43.0
next prev parent reply other threads:[~2024-04-09 12:59 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-09 12:57 [PATCH net-next v4 0/9] allocate dummy device dynamically Breno Leitao
2024-04-09 12:57 ` [PATCH net-next v4 1/9] net: free_netdev: exit earlier if dummy Breno Leitao
2024-04-10 1:46 ` Jakub Kicinski
2024-04-09 12:57 ` [PATCH net-next v4 2/9] net: create a dummy net_device allocator Breno Leitao
2024-04-10 11:10 ` Ido Schimmel
2024-04-10 12:45 ` Breno Leitao
2024-04-09 12:57 ` Breno Leitao [this message]
2024-04-09 12:57 ` [PATCH net-next v4 4/9] net: mediatek: mtk_eth_sock: allocate dummy net_device dynamically Breno Leitao
2024-04-09 12:57 ` [PATCH net-next v4 5/9] net: ipa: " Breno Leitao
2024-04-09 12:57 ` [PATCH net-next v4 6/9] net: ibm/emac: " Breno Leitao
2024-04-09 12:57 ` [PATCH net-next v4 7/9] wifi: qtnfmac: Use netdev dummy allocator helper Breno Leitao
2024-04-09 12:57 ` [PATCH net-next v4 8/9] wifi: ath10k: allocate dummy net_device dynamically Breno Leitao
2024-04-09 12:57 ` [PATCH net-next v4 9/9] wifi: ath11k: " Breno Leitao
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