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_devices from struct dpaa2_caam_priv_per_cpu by converting them into pointers, and allocating them dynamically. Use the leverage alloc_netdev_dummy() to allocate the net_device object at dpaa2_dpseci_setup(). The free of the device occurs at dpaa2_dpseci_disable(). Link: https://lore.kernel.org/all/20240229225910.79e22...@kernel.org/ [1] Signed-off-by: Breno Leitao <lei...@debian.org> --- PS: Unfortunately due to lack of hardware, this was not tested in real hardware. drivers/crypto/caam/caamalg_qi2.c | 28 +++++++++++++++++++++++++--- drivers/crypto/caam/caamalg_qi2.h | 2 +- 2 files changed, 26 insertions(+), 4 deletions(-) diff --git a/drivers/crypto/caam/caamalg_qi2.c b/drivers/crypto/caam/caamalg_qi2.c index a4f6884416a0..207dc422785a 100644 --- a/drivers/crypto/caam/caamalg_qi2.c +++ b/drivers/crypto/caam/caamalg_qi2.c @@ -4990,11 +4990,23 @@ static int dpaa2_dpseci_congestion_setup(struct dpaa2_caam_priv *priv, return err; } +static void free_dpaa2_pcpu_netdev(struct dpaa2_caam_priv *priv, const cpumask_t *cpus) +{ + struct dpaa2_caam_priv_per_cpu *ppriv; + int i; + + for_each_cpu(i, cpus) { + ppriv = per_cpu_ptr(priv->ppriv, i); + free_netdev(ppriv->net_dev); + } +} + static int __cold dpaa2_dpseci_setup(struct fsl_mc_device *ls_dev) { struct device *dev = &ls_dev->dev; struct dpaa2_caam_priv *priv; struct dpaa2_caam_priv_per_cpu *ppriv; + cpumask_t clean_mask; int err, cpu; u8 i; @@ -5073,6 +5085,7 @@ static int __cold dpaa2_dpseci_setup(struct fsl_mc_device *ls_dev) } } + cpumask_clear(&clean_mask); i = 0; for_each_online_cpu(cpu) { u8 j; @@ -5096,15 +5109,23 @@ static int __cold dpaa2_dpseci_setup(struct fsl_mc_device *ls_dev) priv->rx_queue_attr[j].fqid, priv->tx_queue_attr[j].fqid); - ppriv->net_dev.dev = *dev; - INIT_LIST_HEAD(&ppriv->net_dev.napi_list); - netif_napi_add_tx_weight(&ppriv->net_dev, &ppriv->napi, + ppriv->net_dev = alloc_netdev_dummy(0); + if (!ppriv->net_dev) { + err = -ENOMEM; + goto err_alloc_netdev; + } + cpumask_set_cpu(cpu, &clean_mask); + ppriv->net_dev->dev = *dev; + + netif_napi_add_tx_weight(ppriv->net_dev, &ppriv->napi, dpaa2_dpseci_poll, DPAA2_CAAM_NAPI_WEIGHT); } return 0; +err_alloc_netdev: + free_dpaa2_pcpu_netdev(priv, &clean_mask); err_get_rx_queue: dpaa2_dpseci_congestion_free(priv); err_get_vers: @@ -5153,6 +5174,7 @@ static int __cold dpaa2_dpseci_disable(struct dpaa2_caam_priv *priv) ppriv = per_cpu_ptr(priv->ppriv, i); napi_disable(&ppriv->napi); netif_napi_del(&ppriv->napi); + free_netdev(ppriv->net_dev); } return 0; diff --git a/drivers/crypto/caam/caamalg_qi2.h b/drivers/crypto/caam/caamalg_qi2.h index abb502bb675c..61d1219a202f 100644 --- a/drivers/crypto/caam/caamalg_qi2.h +++ b/drivers/crypto/caam/caamalg_qi2.h @@ -81,7 +81,7 @@ struct dpaa2_caam_priv { */ struct dpaa2_caam_priv_per_cpu { struct napi_struct napi; - struct net_device net_dev; + struct net_device *net_dev; int req_fqid; int rsp_fqid; int prio; -- 2.43.0
