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path: root/drivers/net/ethernet/realtek/8139too.c
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Diffstat (limited to 'drivers/net/ethernet/realtek/8139too.c')
-rw-r--r--drivers/net/ethernet/realtek/8139too.c22
1 files changed, 17 insertions, 5 deletions
diff --git a/drivers/net/ethernet/realtek/8139too.c b/drivers/net/ethernet/realtek/8139too.c
index 007b38cce69a..6d0b9dfac313 100644
--- a/drivers/net/ethernet/realtek/8139too.c
+++ b/drivers/net/ethernet/realtek/8139too.c
@@ -112,6 +112,7 @@
#include <linux/io.h>
#include <linux/uaccess.h>
#include <linux/gfp.h>
+#include <linux/if_vlan.h>
#include <asm/irq.h>
#define RTL8139_DRIVER_NAME DRV_NAME " Fast Ethernet driver " DRV_VERSION
@@ -182,10 +183,13 @@ static int debug = -1;
/* Number of Tx descriptor registers. */
#define NUM_TX_DESC 4
-/* max supported ethernet frame size -- must be at least (dev->mtu+14+4).*/
-#define MAX_ETH_FRAME_SIZE 1536
+/* max supported ethernet frame size -- must be at least (dev->mtu+18+4).*/
+#define MAX_ETH_FRAME_SIZE 1792
-/* Size of the Tx bounce buffers -- must be at least (dev->mtu+14+4). */
+/* max supported payload size */
+#define MAX_ETH_DATA_SIZE (MAX_ETH_FRAME_SIZE - VLAN_ETH_HLEN - ETH_FCS_LEN)
+
+/* Size of the Tx bounce buffers -- must be at least (dev->mtu+18+4). */
#define TX_BUF_SIZE MAX_ETH_FRAME_SIZE
#define TX_BUF_TOT_LEN (TX_BUF_SIZE * NUM_TX_DESC)
@@ -920,11 +924,19 @@ static int rtl8139_set_features(struct net_device *dev, netdev_features_t featur
return 0;
}
+static int rtl8139_change_mtu(struct net_device *dev, int new_mtu)
+{
+ if (new_mtu < 68 || new_mtu > MAX_ETH_DATA_SIZE)
+ return -EINVAL;
+ dev->mtu = new_mtu;
+ return 0;
+}
+
static const struct net_device_ops rtl8139_netdev_ops = {
.ndo_open = rtl8139_open,
.ndo_stop = rtl8139_close,
.ndo_get_stats64 = rtl8139_get_stats64,
- .ndo_change_mtu = eth_change_mtu,
+ .ndo_change_mtu = rtl8139_change_mtu,
.ndo_validate_addr = eth_validate_addr,
.ndo_set_mac_address = rtl8139_set_mac_address,
.ndo_start_xmit = rtl8139_start_xmit,
@@ -2025,7 +2037,7 @@ keep_pkt:
/* Malloc up new buffer, compatible with net-2e. */
/* Omit the four octet CRC from the length. */
- skb = netdev_alloc_skb_ip_align(dev, pkt_size);
+ skb = napi_alloc_skb(&tp->napi, pkt_size);
if (likely(skb)) {
#if RX_BUF_IDX == 3
wrap_copy(skb, rx_ring, ring_offset+4, pkt_size);