[net-next,3/6] igb: cleanup incorrect comment and set IP Checksum Enable

Submitted by Jeff Kirsher on Feb. 13, 2009, 4:17 a.m.

Details

Message ID 20090213041742.3848.64015.stgit@lost.foo-projects.org
State Accepted
Delegated to: David Miller
Headers show

Commit Message

Jeff Kirsher Feb. 13, 2009, 4:17 a.m.
From: Alexander Duyck <alexander.h.duyck@intel.com>

IP Checksum enable doesn't need packet split in order to function.  It only
requires the use of advanced descriptors which the current igb driver does.
So we can enable it always without any issues.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Acked-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---

 drivers/net/igb/igb_main.c |   14 ++++----------
 1 files changed, 4 insertions(+), 10 deletions(-)


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Comments

David Miller Feb. 16, 2009, 8:06 a.m.
From: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Date: Thu, 12 Feb 2009 20:17:42 -0800

> IP Checksum enable doesn't need packet split in order to function.  It only
> requires the use of advanced descriptors which the current igb driver does.
> So we can enable it always without any issues.
> 
> Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
> Acked-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

Applied.
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Patch hide | download patch | download mbox

diff --git a/drivers/net/igb/igb_main.c b/drivers/net/igb/igb_main.c
index 8701330..5a6bcef 100644
--- a/drivers/net/igb/igb_main.c
+++ b/drivers/net/igb/igb_main.c
@@ -1934,17 +1934,11 @@  static void igb_configure_rx(struct igb_adapter *adapter)
 	} else {
 		/* Enable Receive Checksum Offload for TCP and UDP */
 		rxcsum = rd32(E1000_RXCSUM);
-		if (adapter->rx_csum) {
-			rxcsum |= E1000_RXCSUM_TUOFL;
+		if (adapter->rx_csum)
+			rxcsum |= E1000_RXCSUM_TUOFL | E1000_RXCSUM_IPPCSE;
+		else
+			rxcsum &= ~(E1000_RXCSUM_TUOFL | E1000_RXCSUM_IPPCSE);
 
-			/* Enable IPv4 payload checksum for UDP fragments
-			 * Must be used in conjunction with packet-split. */
-			if (adapter->rx_ps_hdr_size)
-				rxcsum |= E1000_RXCSUM_IPPCSE;
-		} else {
-			rxcsum &= ~E1000_RXCSUM_TUOFL;
-			/* don't need to clear IPPCSE as it defaults to 0 */
-		}
 		wr32(E1000_RXCSUM, rxcsum);
 	}