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Date: Fri, 4 May 2012 04:05:02 -0700
From: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
To: davem@...emloft.net
Cc: John Fastabend <john.r.fastabend@...el.com>,
netdev@...r.kernel.org, gospo@...hat.com, sassmann@...hat.com,
Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Subject: [net 2/4] ixgbe: dcb: BIT_APP_UPCHG not set by ixgbe_copy_dcb_cfg()
From: John Fastabend <john.r.fastabend@...el.com>
After this commit:
commit aacc1bea190d731755a65cb8ec31dd756f4e263e
Author: Multanen, Eric W <eric.w.multanen@...el.com>
Date: Wed Mar 28 07:49:09 2012 +0000
ixgbe: driver fix for link flap
The BIT_APP_UPCHG bit is no longer set when ixgbe_dcbnl_set_all() is
called. This results in the FCoE app user priority never getting set
and the driver will not configure the tx_rings correctly for FCoE
packets which use the SAN MTU and FCoE offloads.
We resolve this regression by fixing ixgbe_copy_dcb_cfg() to also
check for FCoE application changes. Additionally, we can drop the
IEEE variants of get_dcb_app() because this path is never called
with the IEEE mode enabled.
Signed-off-by: John Fastabend <john.r.fastabend@...el.com>
Tested-by: Ross Brattain <ross.b.brattain@...el.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
---
drivers/net/ethernet/intel/ixgbe/ixgbe.h | 3 --
drivers/net/ethernet/intel/ixgbe/ixgbe_dcb_nl.c | 43 ++++++++++------------
drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 4 +-
3 files changed, 22 insertions(+), 28 deletions(-)
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe.h b/drivers/net/ethernet/intel/ixgbe/ixgbe.h
index 74e1921..81b1555 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe.h
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe.h
@@ -574,9 +574,6 @@ extern struct ixgbe_info ixgbe_82599_info;
extern struct ixgbe_info ixgbe_X540_info;
#ifdef CONFIG_IXGBE_DCB
extern const struct dcbnl_rtnl_ops dcbnl_ops;
-extern int ixgbe_copy_dcb_cfg(struct ixgbe_dcb_config *src_dcb_cfg,
- struct ixgbe_dcb_config *dst_dcb_cfg,
- int tc_max);
#endif
extern char ixgbe_driver_name[];
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_dcb_nl.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_dcb_nl.c
index 652e4b0..32e5c02 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_dcb_nl.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_dcb_nl.c
@@ -44,18 +44,26 @@
#define DCB_NO_HW_CHG 1 /* DCB configuration did not change */
#define DCB_HW_CHG 2 /* DCB configuration changed, no reset */
-int ixgbe_copy_dcb_cfg(struct ixgbe_dcb_config *scfg,
- struct ixgbe_dcb_config *dcfg, int tc_max)
+static int ixgbe_copy_dcb_cfg(struct ixgbe_adapter *adapter, int tc_max)
{
+ struct ixgbe_dcb_config *scfg = &adapter->temp_dcb_cfg;
+ struct ixgbe_dcb_config *dcfg = &adapter->dcb_cfg;
struct tc_configuration *src = NULL;
struct tc_configuration *dst = NULL;
int i, j;
int tx = DCB_TX_CONFIG;
int rx = DCB_RX_CONFIG;
int changes = 0;
+#ifdef IXGBE_FCOE
+ struct dcb_app app = {
+ .selector = DCB_APP_IDTYPE_ETHTYPE,
+ .protocol = ETH_P_FCOE,
+ };
+ u8 up = dcb_getapp(adapter->netdev, &app);
- if (!scfg || !dcfg)
- return changes;
+ if (up && !(up & (1 << adapter->fcoe.up)))
+ changes |= BIT_APP_UPCHG;
+#endif
for (i = DCB_PG_ATTR_TC_0; i < tc_max + DCB_PG_ATTR_TC_0; i++) {
src = &scfg->tc_config[i - DCB_PG_ATTR_TC_0];
@@ -332,28 +340,12 @@ static u8 ixgbe_dcbnl_set_all(struct net_device *netdev)
struct ixgbe_adapter *adapter = netdev_priv(netdev);
int ret = DCB_NO_HW_CHG;
int i;
-#ifdef IXGBE_FCOE
- struct dcb_app app = {
- .selector = DCB_APP_IDTYPE_ETHTYPE,
- .protocol = ETH_P_FCOE,
- };
- u8 up;
-
- /* In IEEE mode, use the IEEE Ethertype selector value */
- if (adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE) {
- app.selector = IEEE_8021QAZ_APP_SEL_ETHERTYPE;
- up = dcb_ieee_getapp_mask(netdev, &app);
- } else {
- up = dcb_getapp(netdev, &app);
- }
-#endif
/* Fail command if not in CEE mode */
if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
return ret;
- adapter->dcb_set_bitmap |= ixgbe_copy_dcb_cfg(&adapter->temp_dcb_cfg,
- &adapter->dcb_cfg,
+ adapter->dcb_set_bitmap |= ixgbe_copy_dcb_cfg(adapter,
MAX_TRAFFIC_CLASS);
if (!adapter->dcb_set_bitmap)
return ret;
@@ -440,8 +432,13 @@ static u8 ixgbe_dcbnl_set_all(struct net_device *netdev)
* FCoE is using changes. This happens if the APP info
* changes or the up2tc mapping is updated.
*/
- if ((up && !(up & (1 << adapter->fcoe.up))) ||
- (adapter->dcb_set_bitmap & BIT_APP_UPCHG)) {
+ if (adapter->dcb_set_bitmap & BIT_APP_UPCHG) {
+ struct dcb_app app = {
+ .selector = DCB_APP_IDTYPE_ETHTYPE,
+ .protocol = ETH_P_FCOE,
+ };
+ u8 up = dcb_getapp(netdev, &app);
+
adapter->fcoe.up = ffs(up) - 1;
ixgbe_dcbnl_devreset(netdev);
ret = DCB_HW_CHG_RST;
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
index d9dbf87..50f0700 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
@@ -4418,8 +4418,8 @@ static int __devinit ixgbe_sw_init(struct ixgbe_adapter *adapter)
adapter->dcb_cfg.pfc_mode_enable = false;
adapter->dcb_set_bitmap = 0x00;
adapter->dcbx_cap = DCB_CAP_DCBX_HOST | DCB_CAP_DCBX_VER_CEE;
- ixgbe_copy_dcb_cfg(&adapter->dcb_cfg, &adapter->temp_dcb_cfg,
- MAX_TRAFFIC_CLASS);
+ memcpy(&adapter->temp_dcb_cfg, &adapter->dcb_cfg,
+ sizeof(adapter->temp_dcb_cfg));
#endif
--
1.7.7.6
--
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