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authorFelix Fietkau <nbd@openwrt.org>2009-08-01 21:29:05 +0000
committerFelix Fietkau <nbd@openwrt.org>2009-08-01 21:29:05 +0000
commitb3b04354d306f04e32be35dcfeef246b2af8dd45 (patch)
tree44ba5425e2bfbccd57b63b83705875624dc7ef5a /target/linux/ixp4xx/patches-2.6.30
parentf8097687d1ec5e1293686633ba6840eb0abdd16d (diff)
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ixp4xx: add support for jumbo frames to the ethernet driver
SVN-Revision: 17083
Diffstat (limited to 'target/linux/ixp4xx/patches-2.6.30')
-rw-r--r--target/linux/ixp4xx/patches-2.6.30/304-ixp4xx_eth_jumboframe.patch78
1 files changed, 78 insertions, 0 deletions
diff --git a/target/linux/ixp4xx/patches-2.6.30/304-ixp4xx_eth_jumboframe.patch b/target/linux/ixp4xx/patches-2.6.30/304-ixp4xx_eth_jumboframe.patch
new file mode 100644
index 0000000..21e8f45
--- /dev/null
+++ b/target/linux/ixp4xx/patches-2.6.30/304-ixp4xx_eth_jumboframe.patch
@@ -0,0 +1,78 @@
+--- a/drivers/net/arm/ixp4xx_eth.c
++++ b/drivers/net/arm/ixp4xx_eth.c
+@@ -52,7 +52,7 @@
+
+ #define POOL_ALLOC_SIZE (sizeof(struct desc) * (RX_DESCS + TX_DESCS))
+ #define REGS_SIZE 0x1000
+-#define MAX_MRU 1536 /* 0x600 */
++#define MAX_MRU 16384
+ #define RX_BUFF_SIZE ALIGN((NET_IP_ALIGN) + MAX_MRU, 4)
+
+ #define NAPI_WEIGHT 16
+@@ -1066,6 +1066,30 @@ static void destroy_queues(struct port *
+ }
+ }
+
++static int eth_do_change_mtu(struct net_device *dev, int mtu)
++{
++ struct port *port;
++ struct msg msg;
++
++ 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 = ((mtu + 63) / 64) << 8;
++ msg.byte3 = ((mtu + 63) / 64) << 8;
++
++ msg.byte4 = msg.byte6 = mtu >> 8;
++ msg.byte5 = msg.byte7 = mtu & 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);
+@@ -1117,6 +1141,8 @@ 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;
+
+@@ -1256,7 +1282,26 @@ 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,