81 lines
1.9 KiB
Diff
81 lines
1.9 KiB
Diff
--- a/drivers/net/arm/ixp4xx_eth.c
|
|
+++ b/drivers/net/arm/ixp4xx_eth.c
|
|
@@ -53,7 +53,7 @@
|
|
|
|
#define POOL_ALLOC_SIZE (sizeof(struct desc) * (RX_DESCS + TX_DESCS))
|
|
#define REGS_SIZE 0x1000
|
|
-#define MAX_MRU 1536 /* 0x600 */
|
|
+#define MAX_MRU (14320 - ETH_HLEN - ETH_FCS_LEN)
|
|
#define RX_BUFF_SIZE ALIGN((NET_IP_ALIGN) + MAX_MRU, 4)
|
|
|
|
#define NAPI_WEIGHT 16
|
|
@@ -1075,6 +1075,32 @@ static void destroy_queues(struct port *
|
|
}
|
|
}
|
|
|
|
+static int eth_do_change_mtu(struct net_device *dev, int mtu)
|
|
+{
|
|
+ struct port *port;
|
|
+ struct msg msg;
|
|
+ /* adjust for ethernet headers */
|
|
+ int framesize = mtu + ETH_HLEN + ETH_FCS_LEN;
|
|
+
|
|
+ port = netdev_priv(dev);
|
|
+
|
|
+ memset(&msg, 0, sizeof(msg));
|
|
+ msg.cmd = NPE_SETMAXFRAMELENGTHS;
|
|
+ msg.eth_id = port->id;
|
|
+
|
|
+ /* max rx/tx 64 byte blocks */
|
|
+ msg.byte2 = ((framesize + 63) / 64) << 8;
|
|
+ msg.byte3 = ((framesize + 63) / 64) << 8;
|
|
+
|
|
+ msg.byte4 = msg.byte6 = framesize >> 8;
|
|
+ msg.byte5 = msg.byte7 = framesize & 0xff;
|
|
+
|
|
+ if (npe_send_recv_message(port->npe, &msg, "ETH_SET_MAX_FRAME_LENGTH"))
|
|
+ return -EIO;
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
static int eth_open(struct net_device *dev)
|
|
{
|
|
struct port *port = netdev_priv(dev);
|
|
@@ -1126,6 +1152,8 @@ static int eth_open(struct net_device *d
|
|
if (npe_send_recv_message(port->npe, &msg, "ETH_SET_FIREWALL_MODE"))
|
|
return -EIO;
|
|
|
|
+ eth_do_change_mtu(dev, dev->mtu);
|
|
+
|
|
if ((err = request_queues(port)) != 0)
|
|
return err;
|
|
|
|
@@ -1265,7 +1293,26 @@ static int eth_close(struct net_device *
|
|
return 0;
|
|
}
|
|
|
|
+static int ixp_eth_change_mtu(struct net_device *dev, int mtu)
|
|
+{
|
|
+ int ret;
|
|
+
|
|
+ if (mtu > MAX_MRU)
|
|
+ return -EINVAL;
|
|
+
|
|
+ if (dev->flags & IFF_UP) {
|
|
+ ret = eth_do_change_mtu(dev, mtu);
|
|
+ if (ret < 0)
|
|
+ return ret;
|
|
+ }
|
|
+
|
|
+ dev->mtu = mtu;
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
static const struct net_device_ops ixp4xx_netdev_ops = {
|
|
+ .ndo_change_mtu = ixp_eth_change_mtu,
|
|
.ndo_open = eth_open,
|
|
.ndo_stop = eth_close,
|
|
.ndo_start_xmit = eth_xmit,
|