Techwizz/kernel-fxtec-pro1x
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

Automatic merge of /spare/repo/netdev-2.6 branch forcedeth

Browse source
This commit is contained in:
2005-05-25 22:10:25 -04:00 committed by Jeff Garzik
commit acb969560d
1 changed files with 86 additions and 17 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

103
drivers/net/forcedeth.c
View file

@ -81,6 +81,7 @@
* cause DMA to kfree'd memory.
* 0.31: 14 Nov 2004: ethtool support for getting/setting link
* capabilities.
* 0.32: 16 Apr 2005: RX_ERROR4 handling added.
*
* Known bugs:
* We suspect that on some hardware no TX done interrupts are generated.
@ -92,7 +93,7 @@
* DEV_NEED_TIMERIRQ will not harm you on sane hardware, only generating a few
* superfluous timer interrupts from the nic.
*/
#define FORCEDETH_VERSION "0.31"
#define FORCEDETH_VERSION "0.32"
#define DRV_NAME "forcedeth"
#include <linux/module.h>
@ -109,6 +110,7 @@
#include <linux/mii.h>
#include <linux/random.h>
#include <linux/init.h>
#include <linux/if_vlan.h>
#include <asm/irq.h>
#include <asm/io.h>
@ -1013,6 +1015,59 @@ static void nv_tx_timeout(struct net_device *dev)
spin_unlock_irq(&np->lock);
}
/*
* Called when the nic notices a mismatch between the actual data len on the
* wire and the len indicated in the 802 header
*/
static int nv_getlen(struct net_device *dev, void *packet, int datalen)
{
int hdrlen; /* length of the 802 header */
int protolen; /* length as stored in the proto field */
/* 1) calculate len according to header */
if ( ((struct vlan_ethhdr *)packet)->h_vlan_proto == __constant_htons(ETH_P_8021Q)) {
protolen = ntohs( ((struct vlan_ethhdr *)packet)->h_vlan_encapsulated_proto );
hdrlen = VLAN_HLEN;
} else {
protolen = ntohs( ((struct ethhdr *)packet)->h_proto);
hdrlen = ETH_HLEN;
}
dprintk(KERN_DEBUG "%s: nv_getlen: datalen %d, protolen %d, hdrlen %d\n",
dev->name, datalen, protolen, hdrlen);
if (protolen > ETH_DATA_LEN)
return datalen; /* Value in proto field not a len, no checks possible */
protolen += hdrlen;
/* consistency checks: */
if (datalen > ETH_ZLEN) {
if (datalen >= protolen) {
/* more data on wire than in 802 header, trim of
* additional data.
*/
dprintk(KERN_DEBUG "%s: nv_getlen: accepting %d bytes.\n",
dev->name, protolen);
return protolen;
} else {
/* less data on wire than mentioned in header.
* Discard the packet.
*/
dprintk(KERN_DEBUG "%s: nv_getlen: discarding long packet.\n",
dev->name);
return -1;
}
} else {
/* short packet. Accept only if 802 values are also short */
if (protolen > ETH_ZLEN) {
dprintk(KERN_DEBUG "%s: nv_getlen: discarding short packet.\n",
dev->name);
return -1;
}
dprintk(KERN_DEBUG "%s: nv_getlen: accepting %d bytes.\n",
dev->name, datalen);
return datalen;
}
}
static void nv_rx_process(struct net_device *dev)
{
struct fe_priv *np = get_nvpriv(dev);
@ -1064,7 +1119,7 @@ static void nv_rx_process(struct net_device *dev)
np->stats.rx_errors++;
goto next_pkt;
}
if (Flags & (NV_RX_ERROR1|NV_RX_ERROR2|NV_RX_ERROR3|NV_RX_ERROR4)) {
if (Flags & (NV_RX_ERROR1|NV_RX_ERROR2|NV_RX_ERROR3)) {
np->stats.rx_errors++;
goto next_pkt;
}
@ -1078,22 +1133,24 @@ static void nv_rx_process(struct net_device *dev)
np->stats.rx_errors++;
goto next_pkt;
}
if (Flags & NV_RX_ERROR) {
/* framing errors are soft errors, the rest is fatal. */
if (Flags & NV_RX_FRAMINGERR) {
if (Flags & NV_RX_SUBSTRACT1) {
len--;
}
} else {
if (Flags & NV_RX_ERROR4) {
len = nv_getlen(dev, np->rx_skbuff[i]->data, len);
if (len < 0) {
np->stats.rx_errors++;
goto next_pkt;
}
}
/* framing errors are soft errors. */
if (Flags & NV_RX_FRAMINGERR) {
if (Flags & NV_RX_SUBSTRACT1) {
len--;
}
}
} else {
if (!(Flags & NV_RX2_DESCRIPTORVALID))
goto next_pkt;
if (Flags & (NV_RX2_ERROR1|NV_RX2_ERROR2|NV_RX2_ERROR3|NV_RX2_ERROR4)) {
if (Flags & (NV_RX2_ERROR1|NV_RX2_ERROR2|NV_RX2_ERROR3)) {
np->stats.rx_errors++;
goto next_pkt;
}
@ -1107,17 +1164,19 @@ static void nv_rx_process(struct net_device *dev)
np->stats.rx_errors++;
goto next_pkt;
}
if (Flags & NV_RX2_ERROR) {
/* framing errors are soft errors, the rest is fatal. */
if (Flags & NV_RX2_FRAMINGERR) {
if (Flags & NV_RX2_SUBSTRACT1) {
len--;
}
} else {
if (Flags & NV_RX2_ERROR4) {
len = nv_getlen(dev, np->rx_skbuff[i]->data, len);
if (len < 0) {
np->stats.rx_errors++;
goto next_pkt;
}
}
/* framing errors are soft errors */
if (Flags & NV_RX2_FRAMINGERR) {
if (Flags & NV_RX2_SUBSTRACT1) {
len--;
}
}
Flags &= NV_RX2_CHECKSUMMASK;
if (Flags == NV_RX2_CHECKSUMOK1 ||
Flags == NV_RX2_CHECKSUMOK2 ||
@ -1480,6 +1539,13 @@ static void nv_do_nic_poll(unsigned long data)
enable_irq(dev->irq);
}
#ifdef CONFIG_NET_POLL_CONTROLLER
static void nv_poll_controller(struct net_device *dev)
{
nv_do_nic_poll((unsigned long) dev);
}
#endif
static void nv_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
{
struct fe_priv *np = get_nvpriv(dev);
@ -1962,6 +2028,9 @@ static int __devinit nv_probe(struct pci_dev *pci_dev, const struct pci_device_i
dev->get_stats = nv_get_stats;
dev->change_mtu = nv_change_mtu;
dev->set_multicast_list = nv_set_multicast;
#ifdef CONFIG_NET_POLL_CONTROLLER
dev->poll_controller = nv_poll_controller;
#endif
SET_ETHTOOL_OPS(dev, &ops);
dev->tx_timeout = nv_tx_timeout;
dev->watchdog_timeo = NV_WATCHDOG_TIMEO;