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-rw-r--r--drivers/net/tg3.c231
1 files changed, 144 insertions, 87 deletions
diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index a2a5f318315..5d0a1e6e051 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -5517,14 +5517,7 @@ static int tg3_change_mtu(struct net_device *dev, int new_mtu)
return err;
}
-/* Free up pending packets in all rx/tx rings.
- *
- * The chip has been shut down and the driver detached from
- * the networking, so no interrupts or new tx packets will
- * end up in the driver. tp->{tx,}lock is not held and we are not
- * in an interrupt context and thus may sleep.
- */
-static void tg3_free_rings(struct tg3 *tp)
+static void tg3_rx_prodring_free(struct tg3 *tp)
{
struct ring_info *rxp;
int i;
@@ -5534,46 +5527,29 @@ static void tg3_free_rings(struct tg3 *tp)
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_JUMBO_RING_SIZE; i++) {
- rxp = &tp->rx_jumbo_buffers[i];
- if (rxp->skb == NULL)
- continue;
pci_unmap_single(tp->pdev,
pci_unmap_addr(rxp, mapping),
- TG3_RX_JMB_MAP_SZ,
+ tp->rx_pkt_map_sz,
PCI_DMA_FROMDEVICE);
dev_kfree_skb_any(rxp->skb);
rxp->skb = NULL;
}
- for (i = 0; i < TG3_TX_RING_SIZE; ) {
- struct tx_ring_info *txp;
- struct sk_buff *skb;
+ if (tp->tg3_flags & TG3_FLAG_JUMBO_CAPABLE) {
+ for (i = 0; i < TG3_RX_JUMBO_RING_SIZE; i++) {
+ rxp = &tp->rx_jumbo_buffers[i];
- txp = &tp->tx_buffers[i];
- skb = txp->skb;
+ if (rxp->skb == NULL)
+ continue;
- if (skb == NULL) {
- i++;
- 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;
}
-
- skb_dma_unmap(&tp->pdev->dev, skb, DMA_TO_DEVICE);
-
- txp->skb = NULL;
-
- i += skb_shinfo(skb)->nr_frags + 1;
-
- dev_kfree_skb_any(skb);
}
}
@@ -5584,18 +5560,12 @@ static void tg3_free_rings(struct tg3 *tp)
* end up in the driver. tp->{tx,}lock are held and thus
* we may not sleep.
*/
-static int tg3_init_rings(struct tg3 *tp)
+static int tg3_rx_prodring_alloc(struct tg3 *tp)
{
u32 i, rx_pkt_dma_sz;
- /* Free up all the SKBs. */
- tg3_free_rings(tp);
-
/* Zero out all descriptors. */
memset(tp->rx_std, 0, TG3_RX_RING_BYTES);
- memset(tp->rx_jumbo, 0, TG3_RX_JUMBO_RING_BYTES);
- memset(tp->rx_rcb, 0, TG3_RX_RCB_RING_BYTES(tp));
- memset(tp->tx_ring, 0, TG3_TX_RING_BYTES);
rx_pkt_dma_sz = TG3_RX_STD_DMA_SZ;
if ((tp->tg3_flags2 & TG3_FLG2_5780_CLASS) &&
@@ -5617,19 +5587,6 @@ static int tg3_init_rings(struct tg3 *tp)
(i << RXD_OPAQUE_INDEX_SHIFT));
}
- if (tp->tg3_flags & TG3_FLAG_JUMBO_RING_ENABLE) {
- for (i = 0; i < TG3_RX_JUMBO_RING_SIZE; i++) {
- struct tg3_rx_buffer_desc *rxd;
-
- rxd = &tp->rx_jumbo[i];
- rxd->idx_len = TG3_RX_JMB_DMA_SZ << RXD_LEN_SHIFT;
- rxd->type_flags = (RXD_FLAG_END << RXD_FLAGS_SHIFT) |
- RXD_FLAG_JUMBO;
- rxd->opaque = (RXD_OPAQUE_RING_JUMBO |
- (i << RXD_OPAQUE_INDEX_SHIFT));
- }
- }
-
/* Now allocate fresh SKBs for each rx ring. */
for (i = 0; i < tp->rx_pending; i++) {
if (tg3_alloc_rx_skb(tp, RXD_OPAQUE_RING_STD, -1, i) < 0) {
@@ -5639,13 +5596,29 @@ static int tg3_init_rings(struct tg3 *tp)
"successfully.\n",
tp->dev->name, i, tp->rx_pending);
if (i == 0)
- return -ENOMEM;
+ goto initfail;
tp->rx_pending = i;
break;
}
}
+ if (!(tp->tg3_flags & TG3_FLAG_JUMBO_CAPABLE))
+ goto done;
+
+ memset(tp->rx_jumbo, 0, TG3_RX_JUMBO_RING_BYTES);
+
if (tp->tg3_flags & TG3_FLAG_JUMBO_RING_ENABLE) {
+ for (i = 0; i < TG3_RX_JUMBO_RING_SIZE; i++) {
+ struct tg3_rx_buffer_desc *rxd;
+
+ rxd = &tp->rx_jumbo[i];
+ rxd->idx_len = TG3_RX_JMB_DMA_SZ << RXD_LEN_SHIFT;
+ rxd->type_flags = (RXD_FLAG_END << RXD_FLAGS_SHIFT) |
+ RXD_FLAG_JUMBO;
+ rxd->opaque = (RXD_OPAQUE_RING_JUMBO |
+ (i << RXD_OPAQUE_INDEX_SHIFT));
+ }
+
for (i = 0; i < tp->rx_jumbo_pending; i++) {
if (tg3_alloc_rx_skb(tp, RXD_OPAQUE_RING_JUMBO,
-1, i) < 0) {
@@ -5654,26 +5627,28 @@ static int tg3_init_rings(struct tg3 *tp)
"only %d out of %d buffers were "
"allocated successfully.\n",
tp->dev->name, i, tp->rx_jumbo_pending);
- if (i == 0) {
- tg3_free_rings(tp);
- return -ENOMEM;
- }
+ if (i == 0)
+ goto initfail;
tp->rx_jumbo_pending = i;
break;
}
}
}
+
+done:
return 0;
+
+initfail:
+ tg3_rx_prodring_free(tp);
+ return -ENOMEM;
}
-/*
- * Must not be invoked with interrupt sources disabled and
- * the hardware shutdown down.
- */
-static void tg3_free_consistent(struct tg3 *tp)
+static void tg3_rx_prodring_fini(struct tg3 *tp)
{
kfree(tp->rx_std_buffers);
tp->rx_std_buffers = NULL;
+ kfree(tp->rx_jumbo_buffers);
+ tp->rx_jumbo_buffers = NULL;
if (tp->rx_std) {
pci_free_consistent(tp->pdev, TG3_RX_RING_BYTES,
tp->rx_std, tp->rx_std_mapping);
@@ -5684,6 +5659,103 @@ static void tg3_free_consistent(struct tg3 *tp)
tp->rx_jumbo, tp->rx_jumbo_mapping);
tp->rx_jumbo = NULL;
}
+}
+
+static int tg3_rx_prodring_init(struct tg3 *tp)
+{
+ tp->rx_std_buffers = kzalloc(sizeof(struct ring_info) *
+ TG3_RX_RING_SIZE, GFP_KERNEL);
+ if (!tp->rx_std_buffers)
+ return -ENOMEM;
+
+ tp->rx_std = pci_alloc_consistent(tp->pdev, TG3_RX_RING_BYTES,
+ &tp->rx_std_mapping);
+ if (!tp->rx_std)
+ goto err_out;
+
+ if (tp->tg3_flags & TG3_FLAG_JUMBO_CAPABLE) {
+ tp->rx_jumbo_buffers = kzalloc(sizeof(struct ring_info) *
+ TG3_RX_JUMBO_RING_SIZE,
+ GFP_KERNEL);
+ if (!tp->rx_jumbo_buffers)
+ goto err_out;
+
+ tp->rx_jumbo = pci_alloc_consistent(tp->pdev,
+ TG3_RX_JUMBO_RING_BYTES,
+ &tp->rx_jumbo_mapping);
+ if (!tp->rx_jumbo)
+ goto err_out;
+ }
+
+ return 0;
+
+err_out:
+ tg3_rx_prodring_fini(tp);
+ return -ENOMEM;
+}
+
+/* Free up pending packets in all rx/tx rings.
+ *
+ * The chip has been shut down and the driver detached from
+ * the networking, so no interrupts or new tx packets will
+ * end up in the driver. tp->{tx,}lock is not held and we are not
+ * in an interrupt context and thus may sleep.
+ */
+static void tg3_free_rings(struct tg3 *tp)
+{
+ int i;
+
+ for (i = 0; i < TG3_TX_RING_SIZE; ) {
+ struct tx_ring_info *txp;
+ struct sk_buff *skb;
+
+ txp = &tp->tx_buffers[i];
+ skb = txp->skb;
+
+ if (skb == NULL) {
+ i++;
+ continue;
+ }
+
+ skb_dma_unmap(&tp->pdev->dev, skb, DMA_TO_DEVICE);
+
+ txp->skb = NULL;
+
+ i += skb_shinfo(skb)->nr_frags + 1;
+
+ dev_kfree_skb_any(skb);
+ }
+
+ tg3_rx_prodring_free(tp);
+}
+
+/* Initialize tx/rx rings for packet processing.
+ *
+ * The chip has been shut down and the driver detached from
+ * the networking, so no interrupts or new tx packets will
+ * end up in the driver. tp->{tx,}lock are held and thus
+ * we may not sleep.
+ */
+static int tg3_init_rings(struct tg3 *tp)
+{
+ /* Free up all the SKBs. */
+ tg3_free_rings(tp);
+
+ /* Zero out all descriptors. */
+ memset(tp->rx_rcb, 0, TG3_RX_RCB_RING_BYTES(tp));
+ memset(tp->tx_ring, 0, TG3_TX_RING_BYTES);
+
+ return tg3_rx_prodring_alloc(tp);
+}
+
+/*
+ * Must not be invoked with interrupt sources disabled and
+ * the hardware shutdown down.
+ */
+static void tg3_free_consistent(struct tg3 *tp)
+{
+ kfree(tp->tx_buffers);
+ tp->tx_buffers = NULL;
if (tp->rx_rcb) {
pci_free_consistent(tp->pdev, TG3_RX_RCB_RING_BYTES(tp),
tp->rx_rcb, tp->rx_rcb_mapping);
@@ -5704,6 +5776,7 @@ static void tg3_free_consistent(struct tg3 *tp)
tp->hw_stats, tp->stats_mapping);
tp->hw_stats = NULL;
}
+ tg3_rx_prodring_fini(tp);
}
/*
@@ -5712,28 +5785,12 @@ static void tg3_free_consistent(struct tg3 *tp)
*/
static int tg3_alloc_consistent(struct tg3 *tp)
{
- tp->rx_std_buffers = kzalloc((sizeof(struct ring_info) *
- (TG3_RX_RING_SIZE +
- TG3_RX_JUMBO_RING_SIZE)) +
- (sizeof(struct tx_ring_info) *
- TG3_TX_RING_SIZE),
- GFP_KERNEL);
- if (!tp->rx_std_buffers)
+ if (tg3_rx_prodring_init(tp))
return -ENOMEM;
- tp->rx_jumbo_buffers = &tp->rx_std_buffers[TG3_RX_RING_SIZE];
- tp->tx_buffers = (struct tx_ring_info *)
- &tp->rx_jumbo_buffers[TG3_RX_JUMBO_RING_SIZE];
-
- tp->rx_std = pci_alloc_consistent(tp->pdev, TG3_RX_RING_BYTES,
- &tp->rx_std_mapping);
- if (!tp->rx_std)
- goto err_out;
-
- tp->rx_jumbo = pci_alloc_consistent(tp->pdev, TG3_RX_JUMBO_RING_BYTES,
- &tp->rx_jumbo_mapping);
-
- if (!tp->rx_jumbo)
+ tp->tx_buffers = kzalloc(sizeof(struct tx_ring_info) *
+ TG3_TX_RING_SIZE, GFP_KERNEL);
+ if (!tp->tx_buffers)
goto err_out;
tp->rx_rcb = pci_alloc_consistent(tp->pdev, TG3_RX_RCB_RING_BYTES(tp),
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-23 05:59:18 +0000