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path: root/drivers/net/ethernet/nvidia/forcedeth.c
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Diffstat (limited to 'drivers/net/ethernet/nvidia/forcedeth.c')
-rw-r--r--drivers/net/ethernet/nvidia/forcedeth.c64
1 files changed, 52 insertions, 12 deletions
diff --git a/drivers/net/ethernet/nvidia/forcedeth.c b/drivers/net/ethernet/nvidia/forcedeth.c
index 0b8de12bcbca..b003fe53c8e2 100644
--- a/drivers/net/ethernet/nvidia/forcedeth.c
+++ b/drivers/net/ethernet/nvidia/forcedeth.c
@@ -2200,6 +2200,7 @@ static netdev_tx_t nv_start_xmit(struct sk_buff *skb, struct net_device *dev)
struct ring_desc *start_tx;
struct ring_desc *prev_tx;
struct nv_skb_map *prev_tx_ctx;
+ struct nv_skb_map *tmp_tx_ctx = NULL, *start_tx_ctx = NULL;
unsigned long flags;
/* add fragments to entries count */
@@ -2261,12 +2262,31 @@ static netdev_tx_t nv_start_xmit(struct sk_buff *skb, struct net_device *dev)
do {
prev_tx = put_tx;
prev_tx_ctx = np->put_tx_ctx;
+ if (!start_tx_ctx)
+ start_tx_ctx = tmp_tx_ctx = np->put_tx_ctx;
+
bcnt = (frag_size > NV_TX2_TSO_MAX_SIZE) ? NV_TX2_TSO_MAX_SIZE : frag_size;
np->put_tx_ctx->dma = skb_frag_dma_map(
&np->pci_dev->dev,
frag, offset,
bcnt,
DMA_TO_DEVICE);
+ if (dma_mapping_error(&np->pci_dev->dev, np->put_tx_ctx->dma)) {
+
+ /* Unwind the mapped fragments */
+ do {
+ nv_unmap_txskb(np, start_tx_ctx);
+ if (unlikely(tmp_tx_ctx++ == np->last_tx_ctx))
+ tmp_tx_ctx = np->first_tx_ctx;
+ } while (tmp_tx_ctx != np->put_tx_ctx);
+ kfree_skb(skb);
+ np->put_tx_ctx = start_tx_ctx;
+ u64_stats_update_begin(&np->swstats_tx_syncp);
+ np->stat_tx_dropped++;
+ u64_stats_update_end(&np->swstats_tx_syncp);
+ return NETDEV_TX_OK;
+ }
+
np->put_tx_ctx->dma_len = bcnt;
np->put_tx_ctx->dma_single = 0;
put_tx->buf = cpu_to_le32(np->put_tx_ctx->dma);
@@ -2327,7 +2347,8 @@ static netdev_tx_t nv_start_xmit_optimized(struct sk_buff *skb,
struct ring_desc_ex *start_tx;
struct ring_desc_ex *prev_tx;
struct nv_skb_map *prev_tx_ctx;
- struct nv_skb_map *start_tx_ctx;
+ struct nv_skb_map *start_tx_ctx = NULL;
+ struct nv_skb_map *tmp_tx_ctx = NULL;
unsigned long flags;
/* add fragments to entries count */
@@ -2392,11 +2413,29 @@ static netdev_tx_t nv_start_xmit_optimized(struct sk_buff *skb,
prev_tx = put_tx;
prev_tx_ctx = np->put_tx_ctx;
bcnt = (frag_size > NV_TX2_TSO_MAX_SIZE) ? NV_TX2_TSO_MAX_SIZE : frag_size;
+ if (!start_tx_ctx)
+ start_tx_ctx = tmp_tx_ctx = np->put_tx_ctx;
np->put_tx_ctx->dma = skb_frag_dma_map(
&np->pci_dev->dev,
frag, offset,
bcnt,
DMA_TO_DEVICE);
+
+ if (dma_mapping_error(&np->pci_dev->dev, np->put_tx_ctx->dma)) {
+
+ /* Unwind the mapped fragments */
+ do {
+ nv_unmap_txskb(np, start_tx_ctx);
+ if (unlikely(tmp_tx_ctx++ == np->last_tx_ctx))
+ tmp_tx_ctx = np->first_tx_ctx;
+ } while (tmp_tx_ctx != np->put_tx_ctx);
+ kfree_skb(skb);
+ np->put_tx_ctx = start_tx_ctx;
+ u64_stats_update_begin(&np->swstats_tx_syncp);
+ np->stat_tx_dropped++;
+ u64_stats_update_end(&np->swstats_tx_syncp);
+ return NETDEV_TX_OK;
+ }
np->put_tx_ctx->dma_len = bcnt;
np->put_tx_ctx->dma_single = 0;
put_tx->bufhigh = cpu_to_le32(dma_high(np->put_tx_ctx->dma));
@@ -2922,15 +2961,15 @@ static int nv_rx_process_optimized(struct net_device *dev, int limit)
vlanflags = le32_to_cpu(np->get_rx.ex->buflow);
/*
- * There's need to check for NETIF_F_HW_VLAN_RX here.
- * Even if vlan rx accel is disabled,
+ * There's need to check for NETIF_F_HW_VLAN_CTAG_RX
+ * here. Even if vlan rx accel is disabled,
* NV_RX3_VLAN_TAG_PRESENT is pseudo randomly set.
*/
- if (dev->features & NETIF_F_HW_VLAN_RX &&
+ if (dev->features & NETIF_F_HW_VLAN_CTAG_RX &&
vlanflags & NV_RX3_VLAN_TAG_PRESENT) {
u16 vid = vlanflags & NV_RX3_VLAN_TAG_MASK;
- __vlan_hwaccel_put_tag(skb, vid);
+ __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid);
}
napi_gro_receive(&np->napi, skb);
u64_stats_update_begin(&np->swstats_rx_syncp);
@@ -4777,7 +4816,7 @@ static netdev_features_t nv_fix_features(struct net_device *dev,
netdev_features_t features)
{
/* vlan is dependent on rx checksum offload */
- if (features & (NETIF_F_HW_VLAN_TX|NETIF_F_HW_VLAN_RX))
+ if (features & (NETIF_F_HW_VLAN_CTAG_TX|NETIF_F_HW_VLAN_CTAG_RX))
features |= NETIF_F_RXCSUM;
return features;
@@ -4789,12 +4828,12 @@ static void nv_vlan_mode(struct net_device *dev, netdev_features_t features)
spin_lock_irq(&np->lock);
- if (features & NETIF_F_HW_VLAN_RX)
+ if (features & NETIF_F_HW_VLAN_CTAG_RX)
np->txrxctl_bits |= NVREG_TXRXCTL_VLANSTRIP;
else
np->txrxctl_bits &= ~NVREG_TXRXCTL_VLANSTRIP;
- if (features & NETIF_F_HW_VLAN_TX)
+ if (features & NETIF_F_HW_VLAN_CTAG_TX)
np->txrxctl_bits |= NVREG_TXRXCTL_VLANINS;
else
np->txrxctl_bits &= ~NVREG_TXRXCTL_VLANINS;
@@ -4831,7 +4870,7 @@ static int nv_set_features(struct net_device *dev, netdev_features_t features)
spin_unlock_irq(&np->lock);
}
- if (changed & (NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX))
+ if (changed & (NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX))
nv_vlan_mode(dev, features);
return 0;
@@ -5025,7 +5064,6 @@ static int nv_loopback_test(struct net_device *dev)
pkt_len = ETH_DATA_LEN;
tx_skb = netdev_alloc_skb(dev, pkt_len);
if (!tx_skb) {
- netdev_err(dev, "netdev_alloc_skb() failed during loopback test\n");
ret = 0;
goto out;
}
@@ -5667,7 +5705,8 @@ static int nv_probe(struct pci_dev *pci_dev, const struct pci_device_id *id)
np->vlanctl_bits = 0;
if (id->driver_data & DEV_HAS_VLAN) {
np->vlanctl_bits = NVREG_VLANCONTROL_ENABLE;
- dev->hw_features |= NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_TX;
+ dev->hw_features |= NETIF_F_HW_VLAN_CTAG_RX |
+ NETIF_F_HW_VLAN_CTAG_TX;
}
dev->features |= dev->hw_features;
@@ -5958,7 +5997,8 @@ static int nv_probe(struct pci_dev *pci_dev, const struct pci_device_id *id)
dev->features & NETIF_F_HIGHDMA ? "highdma " : "",
dev->features & (NETIF_F_IP_CSUM | NETIF_F_SG) ?
"csum " : "",
- dev->features & (NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_TX) ?
+ dev->features & (NETIF_F_HW_VLAN_CTAG_RX |
+ NETIF_F_HW_VLAN_CTAG_TX) ?
"vlan " : "",
dev->features & (NETIF_F_LOOPBACK) ?
"loopback " : "",
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