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path: root/drivers/net/ethernet/broadcom/tg3.c
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Diffstat (limited to 'drivers/net/ethernet/broadcom/tg3.c')
-rw-r--r--drivers/net/ethernet/broadcom/tg3.c47
1 files changed, 37 insertions, 10 deletions
diff --git a/drivers/net/ethernet/broadcom/tg3.c b/drivers/net/ethernet/broadcom/tg3.c
index ceeab8e852ef..d55df3290174 100644
--- a/drivers/net/ethernet/broadcom/tg3.c
+++ b/drivers/net/ethernet/broadcom/tg3.c
@@ -5622,17 +5622,29 @@ static void tg3_tx(struct tg3_napi *tnapi)
}
}
+static void tg3_frag_free(bool is_frag, void *data)
+{
+ if (is_frag)
+ put_page(virt_to_head_page(data));
+ else
+ kfree(data);
+}
+
static void tg3_rx_data_free(struct tg3 *tp, struct ring_info *ri, u32 map_sz)
{
+ unsigned int skb_size = SKB_DATA_ALIGN(map_sz + TG3_RX_OFFSET(tp)) +
+ SKB_DATA_ALIGN(sizeof(struct skb_shared_info));
+
if (!ri->data)
return;
pci_unmap_single(tp->pdev, dma_unmap_addr(ri, mapping),
map_sz, PCI_DMA_FROMDEVICE);
- kfree(ri->data);
+ tg3_frag_free(skb_size <= PAGE_SIZE, ri->data);
ri->data = NULL;
}
+
/* Returns size of skb allocated or < 0 on error.
*
* We only need to fill in the address because the other members
@@ -5645,7 +5657,8 @@ static void tg3_rx_data_free(struct tg3 *tp, struct ring_info *ri, u32 map_sz)
* (to fetch the error flags, vlan tag, checksum, and opaque cookie).
*/
static int tg3_alloc_rx_data(struct tg3 *tp, struct tg3_rx_prodring_set *tpr,
- u32 opaque_key, u32 dest_idx_unmasked)
+ u32 opaque_key, u32 dest_idx_unmasked,
+ unsigned int *frag_size)
{
struct tg3_rx_buffer_desc *desc;
struct ring_info *map;
@@ -5680,7 +5693,13 @@ static int tg3_alloc_rx_data(struct tg3 *tp, struct tg3_rx_prodring_set *tpr,
*/
skb_size = SKB_DATA_ALIGN(data_size + TG3_RX_OFFSET(tp)) +
SKB_DATA_ALIGN(sizeof(struct skb_shared_info));
- data = kmalloc(skb_size, GFP_ATOMIC);
+ if (skb_size <= PAGE_SIZE) {
+ data = netdev_alloc_frag(skb_size);
+ *frag_size = skb_size;
+ } else {
+ data = kmalloc(skb_size, GFP_ATOMIC);
+ *frag_size = 0;
+ }
if (!data)
return -ENOMEM;
@@ -5688,8 +5707,8 @@ static int tg3_alloc_rx_data(struct tg3 *tp, struct tg3_rx_prodring_set *tpr,
data + TG3_RX_OFFSET(tp),
data_size,
PCI_DMA_FROMDEVICE);
- if (pci_dma_mapping_error(tp->pdev, mapping)) {
- kfree(data);
+ if (unlikely(pci_dma_mapping_error(tp->pdev, mapping))) {
+ tg3_frag_free(skb_size <= PAGE_SIZE, data);
return -EIO;
}
@@ -5840,18 +5859,19 @@ static int tg3_rx(struct tg3_napi *tnapi, int budget)
if (len > TG3_RX_COPY_THRESH(tp)) {
int skb_size;
+ unsigned int frag_size;
skb_size = tg3_alloc_rx_data(tp, tpr, opaque_key,
- *post_ptr);
+ *post_ptr, &frag_size);
if (skb_size < 0)
goto drop_it;
pci_unmap_single(tp->pdev, dma_addr, skb_size,
PCI_DMA_FROMDEVICE);
- skb = build_skb(data);
+ skb = build_skb(data, frag_size);
if (!skb) {
- kfree(data);
+ tg3_frag_free(frag_size != 0, data);
goto drop_it_no_recycle;
}
skb_reserve(skb, TG3_RX_OFFSET(tp));
@@ -7287,7 +7307,10 @@ static int tg3_rx_prodring_alloc(struct tg3 *tp,
/* Now allocate fresh SKBs for each rx ring. */
for (i = 0; i < tp->rx_pending; i++) {
- if (tg3_alloc_rx_data(tp, tpr, RXD_OPAQUE_RING_STD, i) < 0) {
+ unsigned int frag_size;
+
+ if (tg3_alloc_rx_data(tp, tpr, RXD_OPAQUE_RING_STD, i,
+ &frag_size) < 0) {
netdev_warn(tp->dev,
"Using a smaller RX standard ring. Only "
"%d out of %d buffers were allocated "
@@ -7319,7 +7342,10 @@ static int tg3_rx_prodring_alloc(struct tg3 *tp,
}
for (i = 0; i < tp->rx_jumbo_pending; i++) {
- if (tg3_alloc_rx_data(tp, tpr, RXD_OPAQUE_RING_JUMBO, i) < 0) {
+ unsigned int frag_size;
+
+ if (tg3_alloc_rx_data(tp, tpr, RXD_OPAQUE_RING_JUMBO, i,
+ &frag_size) < 0) {
netdev_warn(tp->dev,
"Using a smaller RX jumbo ring. Only %d "
"out of %d buffers were allocated "
@@ -12248,6 +12274,7 @@ static const struct ethtool_ops tg3_ethtool_ops = {
.get_rxfh_indir_size = tg3_get_rxfh_indir_size,
.get_rxfh_indir = tg3_get_rxfh_indir,
.set_rxfh_indir = tg3_set_rxfh_indir,
+ .get_ts_info = ethtool_op_get_ts_info,
};
static struct rtnl_link_stats64 *tg3_get_stats64(struct net_device *dev,