[PATCH net 0/2] bnxt_en: 2 bug fixes

[PATCH net 0/2] bnxt_en: 2 bug fixes

[Michael Chan]

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The first one disables aRFS/NTUPLE on an older broken firmware version.
The second one adds missing memory barriers related to completion ring
handling.

Michael Chan (2):
  bnxt_en: Disable aRFS if running on 212 firmware
  bnxt_en: Add missing DMA memory barriers

 drivers/net/ethernet/broadcom/bnxt/bnxt.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

-- 
2.18.1


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[PATCH net 1/2] bnxt_en: Disable aRFS if running on 212 firmware

[Michael Chan]

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212 firmware broke aRFS, so disable it.  Traffic may stop after ntuple
filters are inserted and deleted by the 212 firmware.

Fixes: ae10ae740ad2 ("bnxt_en: Add new hardware RFS mode.")
Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index dd2d2a5fef15..207ef7dc9bff 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -10792,6 +10792,9 @@ static bool bnxt_rfs_supported(struct bnxt *bp)
 			return true;
 		return false;
 	}
+	/* 212 firmware is broken for aRFS */
+	if (BNXT_FW_MAJ(bp) == 212)
+		return false;
 	if (BNXT_PF(bp) && !BNXT_CHIP_TYPE_NITRO_A0(bp))
 		return true;
 	if (bp->flags & BNXT_FLAG_NEW_RSS_CAP)
-- 
2.18.1


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[PATCH net 2/2] bnxt_en: Add missing DMA memory barriers

[Michael Chan]

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Each completion ring entry has a valid bit to indicate that the entry
contains a valid completion event.  The driver's main poll loop
__bnxt_poll_work() has the proper dma_rmb() to make sure the valid
bit of the next entry has been checked before proceeding further.
But when we call bnxt_rx_pkt() to process the RX event, the RX
completion event consists of two completion entries and only the
first entry has been checked to be valid.  We need the same barrier
after checking the next completion entry.  Add missing dma_rmb()
barriers in bnxt_rx_pkt() and other similar locations.

Fixes: 67a95e2022c7 ("bnxt_en: Need memory barrier when processing the completion ring.")
Reported-by: Lance Richardson <lance.richardson@broadcom.com>
Reviewed-by: Andy Gospodarek <gospo@broadcom.com>
Reviewed-by: Lance Richardson <lance.richardson@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index 207ef7dc9bff..8a97640cdfe7 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -1788,6 +1788,10 @@ static int bnxt_rx_pkt(struct bnxt *bp, struct bnxt_cp_ring_info *cpr,
 	if (!RX_CMP_VALID(rxcmp1, tmp_raw_cons))
 		return -EBUSY;
 
+	/* The valid test of the entry must be done first before
+	 * reading any further.
+	 */
+	dma_rmb();
 	prod = rxr->rx_prod;
 
 	if (cmp_type == CMP_TYPE_RX_L2_TPA_START_CMP) {
@@ -2010,6 +2014,10 @@ static int bnxt_force_rx_discard(struct bnxt *bp,
 	if (!RX_CMP_VALID(rxcmp1, tmp_raw_cons))
 		return -EBUSY;
 
+	/* The valid test of the entry must be done first before
+	 * reading any further.
+	 */
+	dma_rmb();
 	cmp_type = RX_CMP_TYPE(rxcmp);
 	if (cmp_type == CMP_TYPE_RX_L2_CMP) {
 		rxcmp1->rx_cmp_cfa_code_errors_v2 |=
@@ -2475,6 +2483,10 @@ static int bnxt_poll_nitroa0(struct napi_struct *napi, int budget)
 		if (!TX_CMP_VALID(txcmp, raw_cons))
 			break;
 
+		/* The valid test of the entry must be done first before
+		 * reading any further.
+		 */
+		dma_rmb();
 		if ((TX_CMP_TYPE(txcmp) & 0x30) == 0x10) {
 			tmp_raw_cons = NEXT_RAW_CMP(raw_cons);
 			cp_cons = RING_CMP(tmp_raw_cons);
-- 
2.18.1


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Re: [PATCH net 0/2] bnxt_en: 2 bug fixes

[patchwork-bot+netdevbpf]

Hello:

This series was applied to netdev/net.git (refs/heads/master):

On Sun, 15 Aug 2021 16:15:35 -0400 you wrote:
> The first one disables aRFS/NTUPLE on an older broken firmware version.
> The second one adds missing memory barriers related to completion ring
> handling.
> 
> Michael Chan (2):
>   bnxt_en: Disable aRFS if running on 212 firmware
>   bnxt_en: Add missing DMA memory barriers
> 
> [...]

Here is the summary with links:
  - [net,1/2] bnxt_en: Disable aRFS if running on 212 firmware
    https://git.kernel.org/netdev/net/c/976e52b718c3
  - [net,2/2] bnxt_en: Add missing DMA memory barriers
    https://git.kernel.org/netdev/net/c/828affc27ed4

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Re: [PATCH net 0/2] bnxt_en: 2 bug fixes

[patchwork-bot+netdevbpf]

Hello:

This series was applied to netdev/net.git (main)
by David S. Miller <davem@davemloft.net>:

On Fri,  3 Mar 2023 18:43:56 -0800 you wrote:
> This series fixes 2 issues:
> 
> 1. A potential order-5 memory allocation failure during open.
> 2. Double memory free bug during shutdown.
> 
> Michael Chan (1):
>   bnxt_en: Avoid order-5 memory allocation for TPA data
> 
> [...]

Here is the summary with links:
  - [net,1/2] bnxt_en: Avoid order-5 memory allocation for TPA data
    https://git.kernel.org/netdev/net/c/accd7e23693a
  - [net,2/2] bnxt_en: Fix the double free during device removal
    https://git.kernel.org/netdev/net/c/89b59a84cb16

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[PATCH net 0/2] bnxt_en: 2 bug fixes

[Michael Chan]

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This series fixes 2 issues:

1. A potential order-5 memory allocation failure during open.
2. Double memory free bug during shutdown.

Michael Chan (1):
  bnxt_en: Avoid order-5 memory allocation for TPA data

Selvin Xavier (1):
  bnxt_en: Fix the double free during device removal

 drivers/net/ethernet/broadcom/bnxt/bnxt.c     | 25 +++++++++----------
 drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.c |  2 ++
 2 files changed, 14 insertions(+), 13 deletions(-)

-- 
2.32.0


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Re: [PATCH net 0/2] bnxt_en: 2 bug fixes.

[patchwork-bot+netdevbpf]

Hello:

This series was applied to netdev/net.git (refs/heads/master):

On Sat, 15 May 2021 03:25:17 -0400 you wrote:
> The first one fixes a bug to properly identify some recently added HyperV
> device IDs.  The second one fixes device context memory set up on systems
> with 64K page size.
> 
> Please queue these for -stable as well.  Thanks.
> 
> Andy Gospodarek (1):
>   bnxt_en: Include new P5 HV definition in VF check.
> 
> [...]

Here is the summary with links:
  - [net,1/2] bnxt_en: Include new P5 HV definition in VF check.
    https://git.kernel.org/netdev/net/c/ab21494be9dc
  - [net,2/2] bnxt_en: Fix context memory setup for 64K page size.
    https://git.kernel.org/netdev/net/c/702279d2ce46

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[PATCH net 0/2] bnxt_en: 2 bug fixes.

[Michael Chan]

The first one fixes a bug to properly identify some recently added HyperV
device IDs.  The second one fixes device context memory set up on systems
with 64K page size.

Please queue these for -stable as well.  Thanks.

Andy Gospodarek (1):
  bnxt_en: Include new P5 HV definition in VF check.

Michael Chan (1):
  bnxt_en: Fix context memory setup for 64K page size.

 drivers/net/ethernet/broadcom/bnxt/bnxt.c | 12 +++---------
 drivers/net/ethernet/broadcom/bnxt/bnxt.h | 10 ++++++++++
 2 files changed, 13 insertions(+), 9 deletions(-)

-- 
2.18.1

Re: [PATCH net 0/2] bnxt_en: 2 bug fixes.

[patchwork-bot+netdevbpf]

Hello:

This series was applied to netdev/net.git (refs/heads/master):

On Thu, 11 Feb 2021 02:24:22 -0500 you wrote:
> Two unrelated fixes.  The first one fixes intermittent false TX timeouts
> during ring reconfigurations.  The second one fixes a formatting
> discrepancy between the stored and the running FW versions.
> 
> Please also queue these for -stable.  Thanks.
> 
> Edwin Peer (1):
>   bnxt_en: reverse order of TX disable and carrier off
> 
> [...]

Here is the summary with links:
  - [net,1/2] bnxt_en: reverse order of TX disable and carrier off
    https://git.kernel.org/netdev/net/c/132e0b65dc2b
  - [net,2/2] bnxt_en: Fix devlink info's stored fw.psid version format.
    https://git.kernel.org/netdev/net/c/db28b6c77f40

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[PATCH net 0/2] bnxt_en: 2 bug fixes.

[Michael Chan]

Two unrelated fixes.  The first one fixes intermittent false TX timeouts
during ring reconfigurations.  The second one fixes a formatting
discrepancy between the stored and the running FW versions.

Please also queue these for -stable.  Thanks.

Edwin Peer (1):
  bnxt_en: reverse order of TX disable and carrier off

Vasundhara Volam (1):
  bnxt_en: Fix devlink info's stored fw.psid version format.

 drivers/net/ethernet/broadcom/bnxt/bnxt.c         | 3 ++-
 drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c | 4 ++--
 2 files changed, 4 insertions(+), 3 deletions(-)

-- 
2.18.1

Re: [PATCH net 0/2] bnxt_en: 2 bug fixes.

[David Miller]

From: Michael Chan <michael.chan@broadcom.com>
Date: Sun,  1 Mar 2020 22:07:16 -0500

> This first patch fixes a rare but possible crash in pci_disable_msix()
> when the MTU is changed.  The 2nd patch fixes a regression in error
> code handling when flashing a file to NVRAM.

Applied.

> Please also queue these for -stable.  Thanks.

Queued up, thanks Michael.

[PATCH net 0/2] bnxt_en: 2 bug fixes.

[Michael Chan]

This first patch fixes a rare but possible crash in pci_disable_msix()
when the MTU is changed.  The 2nd patch fixes a regression in error
code handling when flashing a file to NVRAM.

Please also queue these for -stable.  Thanks.

Edwin Peer (1):
  bnxt_en: fix error handling when flashing from file

Vasundhara Volam (1):
  bnxt_en: reinitialize IRQs when MTU is modified

 drivers/net/ethernet/broadcom/bnxt/bnxt.c         |  4 ++--
 drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c | 24 +++++++++++------------
 2 files changed, 13 insertions(+), 15 deletions(-)

-- 
2.5.1

Re: [PATCH net 0/2] bnxt_en: 2 bug fixes.

[David Miller]

From: Michael Chan <michael.chan@broadcom.com>
Date: Mon,  8 Apr 2019 17:39:53 -0400

> The first patch prevents possible driver crash if we get a bad RX index
> from the hardware.  The second patch resets the device when the hardware
> reports buffer error to recover from the error.
> 
> Please queue these for -stable also.  Thanks.

Series applied and queued up for -stable, thanks.

[PATCH net 0/2] bnxt_en: 2 bug fixes.

[Michael Chan]

The first patch prevents possible driver crash if we get a bad RX index
from the hardware.  The second patch resets the device when the hardware
reports buffer error to recover from the error.

Please queue these for -stable also.  Thanks.

Michael Chan (2):
  bnxt_en: Improve RX consumer index validity check.
  bnxt_en: Reset device on RX buffer errors.

 drivers/net/ethernet/broadcom/bnxt/bnxt.c | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

-- 
2.5.1

Re: [PATCH net 0/2] bnxt_en: 2 bug fixes.

[David Miller]

From: Michael Chan <michael.chan@broadcom.com>
Date: Fri, 11 Nov 2016 00:11:41 -0500

> Bug fixes in bnxt_setup_tc() and VF vitual link state.

Series applied, thanks Michael.

[PATCH net 0/2] bnxt_en: 2 bug fixes.

[Michael Chan]

Bug fixes in bnxt_setup_tc() and VF vitual link state.

Michael Chan (2):
  bnxt_en: Fix ring arithmetic in bnxt_setup_tc().
  bnxt_en: Fix VF virtual link state.

 drivers/net/ethernet/broadcom/bnxt/bnxt.c       | 11 ++++++-----
 drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c |  4 ++--
 2 files changed, 8 insertions(+), 7 deletions(-)

-- 
1.8.3.1

Re: [PATCH net 0/2] bnxt_en: 2 bug fixes.

[David Miller]

From: Michael Chan <michael.chan@broadcom.com>
Date: Wed,  4 May 2016 16:56:42 -0400

> Fix crash on ppc64 due to missing memory barrier and restore multicast
> after reset.

Looks good, series applied, thanks.

[PATCH net 0/2] bnxt_en: 2 bug fixes.

[Michael Chan]

Fix crash on ppc64 due to missing memory barrier and restore multicast
after reset.

Michael Chan (2):
  bnxt_en: Need memory barrier when processing the completion ring.
  bnxt_en: Setup multicast properly after resetting device.

 drivers/net/ethernet/broadcom/bnxt/bnxt.c | 23 +++++++++++++++++++----
 1 file changed, 19 insertions(+), 4 deletions(-)

-- 
1.8.3.1