diff options
Diffstat (limited to 'drivers/net/tg3.c')
| -rw-r--r-- | drivers/net/tg3.c | 85 |
1 files changed, 49 insertions, 36 deletions
diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c index beda9bf0767..168a7ca58b8 100644 --- a/drivers/net/tg3.c +++ b/drivers/net/tg3.c @@ -137,6 +137,12 @@ #define TG3_RX_STD_MAP_SZ TG3_RX_DMA_TO_MAP_SZ(TG3_RX_STD_DMA_SZ) #define TG3_RX_JMB_MAP_SZ TG3_RX_DMA_TO_MAP_SZ(TG3_RX_JMB_DMA_SZ) +#define TG3_RX_STD_BUFF_RING_SIZE \ + (sizeof(struct ring_info) * TG3_RX_RING_SIZE) + +#define TG3_RX_JMB_BUFF_RING_SIZE \ + (sizeof(struct ring_info) * TG3_RX_JUMBO_RING_SIZE) + /* minimum number of free TX descriptors required to wake up TX process */ #define TG3_TX_WAKEUP_THRESH(tnapi) ((tnapi)->tx_pending / 4) @@ -4397,6 +4403,17 @@ static void tg3_tx(struct tg3_napi *tnapi) } } +static void tg3_rx_skb_free(struct tg3 *tp, struct ring_info *ri, u32 map_sz) +{ + if (!ri->skb) + return; + + pci_unmap_single(tp->pdev, pci_unmap_addr(ri, mapping), + map_sz, PCI_DMA_FROMDEVICE); + dev_kfree_skb_any(ri->skb); + ri->skb = NULL; +} + /* Returns size of skb allocated or < 0 on error. * * We only need to fill in the address because the other members @@ -5701,36 +5718,18 @@ static void tg3_rx_prodring_free(struct tg3 *tp, struct tg3_rx_prodring_set *tpr) { int i; - struct ring_info *rxp; - for (i = 0; i < TG3_RX_RING_SIZE; i++) { - rxp = &tpr->rx_std_buffers[i]; + if (tpr != &tp->prodring[0]) + return; - if (rxp->skb == NULL) - continue; - - pci_unmap_single(tp->pdev, - pci_unmap_addr(rxp, mapping), - tp->rx_pkt_map_sz, - PCI_DMA_FROMDEVICE); - dev_kfree_skb_any(rxp->skb); - rxp->skb = NULL; - } + for (i = 0; i < TG3_RX_RING_SIZE; i++) + tg3_rx_skb_free(tp, &tpr->rx_std_buffers[i], + tp->rx_pkt_map_sz); if (tp->tg3_flags & TG3_FLAG_JUMBO_CAPABLE) { - for (i = 0; i < TG3_RX_JUMBO_RING_SIZE; i++) { - rxp = &tpr->rx_jmb_buffers[i]; - - if (rxp->skb == NULL) - continue; - - pci_unmap_single(tp->pdev, - pci_unmap_addr(rxp, mapping), - TG3_RX_JMB_MAP_SZ, - PCI_DMA_FROMDEVICE); - dev_kfree_skb_any(rxp->skb); - rxp->skb = NULL; - } + for (i = 0; i < TG3_RX_JUMBO_RING_SIZE; i++) + tg3_rx_skb_free(tp, &tpr->rx_jmb_buffers[i], + TG3_RX_JMB_MAP_SZ); } } @@ -5746,6 +5745,14 @@ static int tg3_rx_prodring_alloc(struct tg3 *tp, { u32 i, rx_pkt_dma_sz; + if (tpr != &tp->prodring[0]) { + memset(&tpr->rx_std_buffers[0], 0, TG3_RX_STD_BUFF_RING_SIZE); + if (tp->tg3_flags & TG3_FLAG_JUMBO_CAPABLE) + memset(&tpr->rx_jmb_buffers[0], 0, + TG3_RX_JMB_BUFF_RING_SIZE); + goto done; + } + /* Zero out all descriptors. */ memset(tpr->rx_std, 0, TG3_RX_RING_BYTES); @@ -5847,8 +5854,7 @@ static void tg3_rx_prodring_fini(struct tg3 *tp, static int tg3_rx_prodring_init(struct tg3 *tp, struct tg3_rx_prodring_set *tpr) { - tpr->rx_std_buffers = kzalloc(sizeof(struct ring_info) * - TG3_RX_RING_SIZE, GFP_KERNEL); + tpr->rx_std_buffers = kzalloc(TG3_RX_STD_BUFF_RING_SIZE, GFP_KERNEL); if (!tpr->rx_std_buffers) return -ENOMEM; @@ -5858,8 +5864,7 @@ static int tg3_rx_prodring_init(struct tg3 *tp, goto err_out; if (tp->tg3_flags & TG3_FLAG_JUMBO_CAPABLE) { - tpr->rx_jmb_buffers = kzalloc(sizeof(struct ring_info) * - TG3_RX_JUMBO_RING_SIZE, + tpr->rx_jmb_buffers = kzalloc(TG3_RX_JMB_BUFF_RING_SIZE, GFP_KERNEL); if (!tpr->rx_jmb_buffers) goto err_out; @@ -5915,9 +5920,10 @@ static void tg3_free_rings(struct tg3 *tp) dev_kfree_skb_any(skb); } - } - tg3_rx_prodring_free(tp, &tp->prodring[0]); + if (tp->irq_cnt == 1 || j != tp->irq_cnt - 1) + tg3_rx_prodring_free(tp, &tp->prodring[j]); + } } /* Initialize tx/rx rings for packet processing. @@ -5951,9 +5957,13 @@ static int tg3_init_rings(struct tg3 *tp) tnapi->rx_rcb_ptr = 0; if (tnapi->rx_rcb) memset(tnapi->rx_rcb, 0, TG3_RX_RCB_RING_BYTES(tp)); + + if ((tp->irq_cnt == 1 || i != tp->irq_cnt - 1) && + tg3_rx_prodring_alloc(tp, &tp->prodring[i])) + return -ENOMEM; } - return tg3_rx_prodring_alloc(tp, &tp->prodring[0]); + return 0; } /* @@ -5997,7 +6007,8 @@ static void tg3_free_consistent(struct tg3 *tp) tp->hw_stats = NULL; } - tg3_rx_prodring_fini(tp, &tp->prodring[0]); + for (i = 0; i < (tp->irq_cnt == 1 ? 1 : tp->irq_cnt - 1); i++) + tg3_rx_prodring_fini(tp, &tp->prodring[i]); } /* @@ -6008,8 +6019,10 @@ static int tg3_alloc_consistent(struct tg3 *tp) { int i; - if (tg3_rx_prodring_init(tp, &tp->prodring[0])) - return -ENOMEM; + for (i = 0; i < (tp->irq_cnt == 1 ? 1 : tp->irq_cnt - 1); i++) { + if (tg3_rx_prodring_init(tp, &tp->prodring[i])) + goto err_out; + } tp->hw_stats = pci_alloc_consistent(tp->pdev, sizeof(struct tg3_hw_stats), |