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authorshemminger@osdl.org <shemminger@osdl.org>2006-08-28 10:00:49 -0700
committerJeff Garzik <jeff@garzik.org>2006-08-29 17:18:30 -0400
commite07560cd4f762935968a1120168eb7d22260d85f (patch)
treefb1b41403609c550e0dffb1d6365ff8883d8e9cb /drivers
parentbb507fe11ffda19eee158ce0be42d222135b7aca (diff)
[PATCH] sky2: TSO mss optimization
The MSS in the transmit engine only has to change if TSO mtu changes. This means less commands to the chip when mixing TSO and regular data. Signed-off-by: Stephen Hemminger <shemminger@osdl.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/sky2.c18
1 files changed, 9 insertions, 9 deletions
diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c
index 2a2adc23f6a..fe60f0462c9 100644
--- a/drivers/net/sky2.c
+++ b/drivers/net/sky2.c
@@ -1244,15 +1244,15 @@ static int sky2_xmit_frame(struct sk_buff *skb, struct net_device *dev)
mss += ((skb->h.th->doff - 5) * 4); /* TCP options */
mss += (skb->nh.iph->ihl * 4) + sizeof(struct tcphdr);
mss += ETH_HLEN;
- }
- if (mss != sky2->tx_last_mss) {
- le = get_tx_le(sky2);
- le->tx.tso.size = cpu_to_le16(mss);
- le->tx.tso.rsvd = 0;
- le->opcode = OP_LRGLEN | HW_OWNER;
- le->ctrl = 0;
- sky2->tx_last_mss = mss;
+ if (mss != sky2->tx_last_mss) {
+ le = get_tx_le(sky2);
+ le->tx.tso.size = cpu_to_le16(mss);
+ le->tx.tso.rsvd = 0;
+ le->opcode = OP_LRGLEN | HW_OWNER;
+ le->ctrl = 0;
+ sky2->tx_last_mss = mss;
+ }
}
ctrl = 0;
@@ -1320,7 +1320,7 @@ static int sky2_xmit_frame(struct sk_buff *skb, struct net_device *dev)
le->opcode = OP_BUFFER | HW_OWNER;
fre = sky2->tx_ring
- + RING_NEXT((re - sky2->tx_ring) + i, TX_RING_SIZE);
+ + RING_NEXT((re - sky2->tx_ring) + i, TX_RING_SIZE);
pci_unmap_addr_set(fre, mapaddr, mapping);
}