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forcedeth: fix rx error policy

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This patch enforces a stricter policy on rx errors. The driver needs to
verify whether there are multiple rx errors versus a single error.

Signed-off-by: Ayaz Abdulla <aabdulla@nvidia.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This commit is contained in:
Ayaz Abdulla 2008-08-06 12:11:03 -04:00 committed by Jeff Garzik
parent 8bad4afe12
commit 1ef6841b4c
1 changed files with 8 additions and 6 deletions
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14
drivers/net/forcedeth.c
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@ -402,6 +402,7 @@ union ring_type {
#define NV_RX_FRAMINGERR (1<<29)
#define NV_RX_ERROR (1<<30)
#define NV_RX_AVAIL (1<<31)
#define NV_RX_ERROR_MASK (NV_RX_ERROR1|NV_RX_ERROR2|NV_RX_ERROR3|NV_RX_ERROR4|NV_RX_CRCERR|NV_RX_OVERFLOW|NV_RX_FRAMINGERR)
#define NV_RX2_CHECKSUMMASK (0x1C000000)
#define NV_RX2_CHECKSUM_IP (0x10000000)
@ -419,6 +420,7 @@ union ring_type {
/* error and avail are the same for both */
#define NV_RX2_ERROR (1<<30)
#define NV_RX2_AVAIL (1<<31)
#define NV_RX2_ERROR_MASK (NV_RX2_ERROR1|NV_RX2_ERROR2|NV_RX2_ERROR3|NV_RX2_ERROR4|NV_RX2_CRCERR|NV_RX2_OVERFLOW|NV_RX2_FRAMINGERR)
#define NV_RX3_VLAN_TAG_PRESENT (1<<16)
#define NV_RX3_VLAN_TAG_MASK (0x0000FFFF)
@ -2632,7 +2634,7 @@ static int nv_rx_process(struct net_device *dev, int limit)
if (likely(flags & NV_RX_DESCRIPTORVALID)) {
len = flags & LEN_MASK_V1;
if (unlikely(flags & NV_RX_ERROR)) {
if (flags & NV_RX_ERROR4) {
if ((flags & NV_RX_ERROR_MASK) == NV_RX_ERROR4) {
len = nv_getlen(dev, skb->data, len);
if (len < 0) {
dev->stats.rx_errors++;
@ -2641,7 +2643,7 @@ static int nv_rx_process(struct net_device *dev, int limit)
}
}
/* framing errors are soft errors */
else if (flags & NV_RX_FRAMINGERR) {
else if ((flags & NV_RX_ERROR_MASK) == NV_RX_FRAMINGERR) {
if (flags & NV_RX_SUBSTRACT1) {
len--;
}
@ -2667,7 +2669,7 @@ static int nv_rx_process(struct net_device *dev, int limit)
if (likely(flags & NV_RX2_DESCRIPTORVALID)) {
len = flags & LEN_MASK_V2;
if (unlikely(flags & NV_RX2_ERROR)) {
if (flags & NV_RX2_ERROR4) {
if ((flags & NV_RX2_ERROR_MASK) == NV_RX2_ERROR4) {
len = nv_getlen(dev, skb->data, len);
if (len < 0) {
dev->stats.rx_errors++;
@ -2676,7 +2678,7 @@ static int nv_rx_process(struct net_device *dev, int limit)
}
}
/* framing errors are soft errors */
else if (flags & NV_RX2_FRAMINGERR) {
else if ((flags & NV_RX2_ERROR_MASK) == NV_RX2_FRAMINGERR) {
if (flags & NV_RX2_SUBSTRACT1) {
len--;
}
@ -2766,7 +2768,7 @@ static int nv_rx_process_optimized(struct net_device *dev, int limit)
if (likely(flags & NV_RX2_DESCRIPTORVALID)) {
len = flags & LEN_MASK_V2;
if (unlikely(flags & NV_RX2_ERROR)) {
if (flags & NV_RX2_ERROR4) {
if ((flags & NV_RX2_ERROR_MASK) == NV_RX2_ERROR4) {
len = nv_getlen(dev, skb->data, len);
if (len < 0) {
dev_kfree_skb(skb);
@ -2774,7 +2776,7 @@ static int nv_rx_process_optimized(struct net_device *dev, int limit)
}
}
/* framing errors are soft errors */
else if (flags & NV_RX2_FRAMINGERR) {
else if ((flags & NV_RX2_ERROR_MASK) == NV_RX2_FRAMINGERR) {
if (flags & NV_RX2_SUBSTRACT1) {
len--;
}