From: shemminger@osdl.org
To: Jeff Garzik <jgarzik@pobox.com>
Cc: netdev@vger.kernel.org
Subject: [PATCH 5/9] sky2: TSO mss optimization
Date: Mon, 28 Aug 2006 10:00:49 -0700 [thread overview]
Message-ID: <20060828170217.969201733@localhost.localdomain> (raw)
In-Reply-To: 20060828170044.136391412@localhost.localdomain
[-- Attachment #1: sky2-only-change.patch --]
[-- Type: text/plain, Size: 1234 bytes --]
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>
--- sky2.orig/drivers/net/sky2.c 2006-08-28 10:00:07.000000000 -0700
+++ sky2/drivers/net/sky2.c 2006-08-28 10:00:08.000000000 -0700
@@ -1244,15 +1244,15 @@
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 @@
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);
}
--
Stephen Hemminger <shemminger@osdl.org>
next prev parent reply other threads:[~2006-08-28 18:17 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-08-28 17:00 [PATCH 0/9] sky2 1.7 non-critical bug fixes shemminger
2006-08-28 17:00 ` [PATCH 1/9] sky2: remove cloned/pskb_expand_head check shemminger
2006-08-29 21:18 ` Jeff Garzik
2006-08-28 17:00 ` [PATCH 2/9] sky2: use netdev_alloc_skb shemminger
2006-08-28 17:00 ` [PATCH 3/9] sky2: dont use force status bit shemminger
2006-08-28 17:00 ` [PATCH 4/9] sky2: MSI test timing shemminger
2006-08-28 17:00 ` shemminger [this message]
2006-08-28 17:00 ` [PATCH 6/9] sky2: optimize checksum offload information shemminger
2006-08-28 17:00 ` [PATCH 7/9] sky2: power down PHY when not up shemminger
2006-08-29 21:04 ` Jeff Garzik
2006-08-29 21:11 ` Stephen Hemminger
2006-08-28 17:00 ` [PATCH 8/9] sky2: pci post bug shemminger
2006-08-28 17:00 ` [PATCH 9/9] sky2: version 1.7 shemminger
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