redonkable/alistair23-linux
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e1000: tune our dynamic itr transmit packet accounting

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The driver was still mis-calculating the number of bytes sent during
transmit, now the driver computes what appears to be exactly 100%
correct byte counts (not including CRC) when figuring out how many
bytes and frames were sent during the current transmit packet.
This commit is contained in:
Jesse Brandeburg 2007-01-18 09:25:31 -08:00 committed by Jeff Garzik
parent f6c57bafcd
commit 7753b171c4
1 changed files with 6 additions and 3 deletions
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9
drivers/net/e1000/e1000_main.c
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@ -4020,10 +4020,13 @@ e1000_clean_tx_irq(struct e1000_adapter *adapter,
if (cleaned) {
struct sk_buff *skb = buffer_info->skb;
unsigned int segs = skb_shinfo(skb)->gso_segs;
unsigned int segs, bytecount;
segs = skb_shinfo(skb)->gso_segs ?: 1;
/* multiply data chunks by size of headers */
bytecount = ((segs - 1) * skb_headlen(skb)) +
skb->len;
total_tx_packets += segs;
total_tx_packets++;
total_tx_bytes += skb->len;
total_tx_bytes += bytecount;
}
e1000_unmap_and_free_tx_resource(adapter, buffer_info);
tx_desc->upper.data = 0;