This is a note to let you know that I've just added the patch titled
tg3: Fix TSO CAP for 5704 devs w / ASF enabled
to the 3.0-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
tg3-fix-tso-cap-for-5704-devs-w-asf-enabled.patch
and it can be found in the queue-3.0 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From e13f9bb51ccf1d3673dafe69f30e5a9de751476a Mon Sep 17 00:00:00 2001
From: Matt Carlson <[email protected]>
Date: Mon, 28 Nov 2011 09:41:03 +0000
Subject: tg3: Fix TSO CAP for 5704 devs w / ASF enabled
From: Matt Carlson <[email protected]>
[ Upstream commit cf9ecf4b631f649a964fa611f1a5e8874f2a76db ]
On the earliest TSO capable devices, TSO was accomplished through
firmware. The TSO cannot coexist with ASF management firmware though.
The tg3 driver determines whether or not ASF is enabled by calling
tg3_get_eeprom_hw_cfg(), which checks a particular bit of NIC memory.
Commit dabc5c670d3f86d15ee4f42ab38ec5bd2682487d, entitled "tg3: Move
TSO_CAPABLE assignment", accidentally moved the code that determines
TSO capabilities earlier than the call to tg3_get_eeprom_hw_cfg(). As a
consequence, the driver was attempting to determine TSO capabilities
before it had all the data it needed to make the decision.
This patch fixes the problem by revisiting and reevaluating the decision
after tg3_get_eeprom_hw_cfg() is called.
Signed-off-by: Matt Carlson <[email protected]>
Signed-off-by: Michael Chan <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/net/tg3.c | 14 ++++++++++++--
1 file changed, 12 insertions(+), 2 deletions(-)
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -13647,9 +13647,13 @@ static int __devinit tg3_get_invariants(
if (tg3_flag(tp, HW_TSO_1) ||
tg3_flag(tp, HW_TSO_2) ||
tg3_flag(tp, HW_TSO_3) ||
- (tp->fw_needed && !tg3_flag(tp, ENABLE_ASF)))
+ tp->fw_needed) {
+ /* For firmware TSO, assume ASF is disabled.
+ * We'll disable TSO later if we discover ASF
+ * is enabled in tg3_get_eeprom_hw_cfg().
+ */
tg3_flag_set(tp, TSO_CAPABLE);
- else {
+ } else {
tg3_flag_clear(tp, TSO_CAPABLE);
tg3_flag_clear(tp, TSO_BUG);
tp->fw_needed = NULL;
@@ -13887,6 +13891,12 @@ static int __devinit tg3_get_invariants(
*/
tg3_get_eeprom_hw_cfg(tp);
+ if (tp->fw_needed && tg3_flag(tp, ENABLE_ASF)) {
+ tg3_flag_clear(tp, TSO_CAPABLE);
+ tg3_flag_clear(tp, TSO_BUG);
+ tp->fw_needed = NULL;
+ }
+
if (tg3_flag(tp, ENABLE_APE)) {
/* Allow reads and writes to the
* APE register and memory space.
Patches currently in stable-queue which might be from [email protected] are
queue-3.0/tg3-fix-tso-cap-for-5704-devs-w-asf-enabled.patch
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