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In addition, slightly different from before, the cleanup helper function is used to manage dynamically allocated memory resources. Signed-off-by: Clark Wang Signed-off-by: Wei Fang Reviewed-by: Frank Li --- v2 changes: This patch is separated from v1 patch 9 ("net: enetc: optimize the allocation of tx_bdr"). Separate enetc_int_vector_init() from the original patch. In addition, add new help function enetc_int_vector_destroy(). v3 changes: 1. Add the description of cleanup helper function used enetc_int_vector_init() to the commit message. 2. Fix the 'err' uninitialized issue when enetc_int_vector_init() returns error. v4: no changes --- drivers/net/ethernet/freescale/enetc/enetc.c | 172 ++++++++++--------- 1 file changed, 87 insertions(+), 85 deletions(-) diff --git a/drivers/net/ethernet/freescale/enetc/enetc.c b/drivers/net/ethernet/freescale/enetc/enetc.c index 032d8eadd003..bd725561b8a2 100644 --- a/drivers/net/ethernet/freescale/enetc/enetc.c +++ b/drivers/net/ethernet/freescale/enetc/enetc.c @@ -2965,6 +2965,87 @@ int enetc_ioctl(struct net_device *ndev, struct ifreq *rq, int cmd) } EXPORT_SYMBOL_GPL(enetc_ioctl); +static int enetc_int_vector_init(struct enetc_ndev_priv *priv, int i, + int v_tx_rings) +{ + struct enetc_int_vector *v __free(kfree); + struct enetc_bdr *bdr; + int j, err; + + v = kzalloc(struct_size(v, tx_ring, v_tx_rings), GFP_KERNEL); + if (!v) + return -ENOMEM; + + bdr = &v->rx_ring; + bdr->index = i; + bdr->ndev = priv->ndev; + bdr->dev = priv->dev; + bdr->bd_count = priv->rx_bd_count; + bdr->buffer_offset = ENETC_RXB_PAD; + priv->rx_ring[i] = bdr; + + err = xdp_rxq_info_reg(&bdr->xdp.rxq, priv->ndev, i, 0); + if (err) + return err; + + err = xdp_rxq_info_reg_mem_model(&bdr->xdp.rxq, + MEM_TYPE_PAGE_SHARED, NULL); + if (err) { + xdp_rxq_info_unreg(&bdr->xdp.rxq); + return err; + } + + /* init defaults for adaptive IC */ + if (priv->ic_mode & ENETC_IC_RX_ADAPTIVE) { + v->rx_ictt = 0x1; + v->rx_dim_en = true; + } + + INIT_WORK(&v->rx_dim.work, enetc_rx_dim_work); + netif_napi_add(priv->ndev, &v->napi, enetc_poll); + v->count_tx_rings = v_tx_rings; + + for (j = 0; j < v_tx_rings; j++) { + int idx; + + /* default tx ring mapping policy */ + idx = priv->bdr_int_num * j + i; + __set_bit(idx, &v->tx_rings_map); + bdr = &v->tx_ring[j]; + bdr->index = idx; + bdr->ndev = priv->ndev; + bdr->dev = priv->dev; + bdr->bd_count = priv->tx_bd_count; + priv->tx_ring[idx] = bdr; + } + + priv->int_vector[i] = no_free_ptr(v); + + return 0; +} + +static void enetc_int_vector_destroy(struct enetc_ndev_priv *priv, int i) +{ + struct enetc_int_vector *v = priv->int_vector[i]; + struct enetc_bdr *rx_ring = &v->rx_ring; + int j, tx_ring_index; + + xdp_rxq_info_unreg_mem_model(&rx_ring->xdp.rxq); + xdp_rxq_info_unreg(&rx_ring->xdp.rxq); + netif_napi_del(&v->napi); + cancel_work_sync(&v->rx_dim.work); + + priv->rx_ring[i] = NULL; + + for (j = 0; j < v->count_tx_rings; j++) { + tx_ring_index = priv->bdr_int_num * j + i; + priv->tx_ring[tx_ring_index] = NULL; + } + + kfree(v); + priv->int_vector[i] = NULL; +} + int enetc_alloc_msix(struct enetc_ndev_priv *priv) { struct pci_dev *pdev = priv->si->pdev; @@ -2987,62 +3068,9 @@ int enetc_alloc_msix(struct enetc_ndev_priv *priv) v_tx_rings = priv->num_tx_rings / priv->bdr_int_num; for (i = 0; i < priv->bdr_int_num; i++) { - struct enetc_int_vector *v; - struct enetc_bdr *bdr; - int j; - - v = kzalloc(struct_size(v, tx_ring, v_tx_rings), GFP_KERNEL); - if (!v) { - err = -ENOMEM; - goto fail; - } - - priv->int_vector[i] = v; - - bdr = &v->rx_ring; - bdr->index = i; - bdr->ndev = priv->ndev; - bdr->dev = priv->dev; - bdr->bd_count = priv->rx_bd_count; - bdr->buffer_offset = ENETC_RXB_PAD; - priv->rx_ring[i] = bdr; - - err = xdp_rxq_info_reg(&bdr->xdp.rxq, priv->ndev, i, 0); - if (err) { - kfree(v); - goto fail; - } - - err = xdp_rxq_info_reg_mem_model(&bdr->xdp.rxq, - MEM_TYPE_PAGE_SHARED, NULL); - if (err) { - xdp_rxq_info_unreg(&bdr->xdp.rxq); - kfree(v); + err = enetc_int_vector_init(priv, i, v_tx_rings); + if (err) goto fail; - } - - /* init defaults for adaptive IC */ - if (priv->ic_mode & ENETC_IC_RX_ADAPTIVE) { - v->rx_ictt = 0x1; - v->rx_dim_en = true; - } - INIT_WORK(&v->rx_dim.work, enetc_rx_dim_work); - netif_napi_add(priv->ndev, &v->napi, enetc_poll); - v->count_tx_rings = v_tx_rings; - - for (j = 0; j < v_tx_rings; j++) { - int idx; - - /* default tx ring mapping policy */ - idx = priv->bdr_int_num * j + i; - __set_bit(idx, &v->tx_rings_map); - bdr = &v->tx_ring[j]; - bdr->index = idx; - bdr->ndev = priv->ndev; - bdr->dev = priv->dev; - bdr->bd_count = priv->tx_bd_count; - priv->tx_ring[idx] = bdr; - } } num_stack_tx_queues = enetc_num_stack_tx_queues(priv); @@ -3062,16 +3090,8 @@ int enetc_alloc_msix(struct enetc_ndev_priv *priv) return 0; fail: - while (i--) { - struct enetc_int_vector *v = priv->int_vector[i]; - struct enetc_bdr *rx_ring = &v->rx_ring; - - xdp_rxq_info_unreg_mem_model(&rx_ring->xdp.rxq); - xdp_rxq_info_unreg(&rx_ring->xdp.rxq); - netif_napi_del(&v->napi); - cancel_work_sync(&v->rx_dim.work); - kfree(v); - } + while (i--) + enetc_int_vector_destroy(priv, i); pci_free_irq_vectors(pdev); @@ -3083,26 +3103,8 @@ void enetc_free_msix(struct enetc_ndev_priv *priv) { int i; - for (i = 0; i < priv->bdr_int_num; i++) { - struct enetc_int_vector *v = priv->int_vector[i]; - struct enetc_bdr *rx_ring = &v->rx_ring; - - xdp_rxq_info_unreg_mem_model(&rx_ring->xdp.rxq); - xdp_rxq_info_unreg(&rx_ring->xdp.rxq); - netif_napi_del(&v->napi); - cancel_work_sync(&v->rx_dim.work); - } - - for (i = 0; i < priv->num_rx_rings; i++) - priv->rx_ring[i] = NULL; - - for (i = 0; i < priv->num_tx_rings; i++) - priv->tx_ring[i] = NULL; - - for (i = 0; i < priv->bdr_int_num; i++) { - kfree(priv->int_vector[i]); - priv->int_vector[i] = NULL; - } + for (i = 0; i < priv->bdr_int_num; i++) + enetc_int_vector_destroy(priv, i); /* disable all MSIX for this device */ pci_free_irq_vectors(priv->si->pdev);