patch 'net/ixgbe: fix broadcast Rx on VF after promisc removal' has been queued to stable release 20.11.7

[luca.boccassi at gmail.com]

Hi,

FYI, your patch has been queued to stable release 20.11.7

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 11/07/22. So please
shout if anyone has objections.

Also note that after the patch there's a diff of the upstream commit vs the
patch applied to the branch. This will indicate if there was any rebasing
needed to apply to the stable branch. If there were code changes for rebasing
(ie: not only metadata diffs), please double check that the rebase was
correctly done.

Queued patches are on a temporary branch at:
https://github.com/kevintraynor/dpdk-stable

This queued commit can be viewed at:
https://github.com/kevintraynor/dpdk-stable/commit/c548e48860b1475d19d8b6c8b43ee619a0d9c14b

Thanks.

Luca Boccassi

---
>From c548e48860b1475d19d8b6c8b43ee619a0d9c14b Mon Sep 17 00:00:00 2001
From: Olivier Matz <olivier.matz at 6wind.com>
Date: Thu, 29 Sep 2022 14:09:00 +0200
Subject: [PATCH] net/ixgbe: fix broadcast Rx on VF after promisc removal

[ upstream commit 8260929205e5a2666f9db697f749a2d23273bb86 ]

After a VF requested to remove the promiscuous flag on an interface, the
broadcast packets are not received anymore. This breaks some protocols
like ARP.

In ixgbe_update_vf_xcast_mode(), we should keep the IXGBE_VMOLR_BAM
bit (Broadcast Accept) on promiscuous removal. This flag is already set
by default in ixgbe_vf_reset_event() on VF reset.

A similar patch was accepted in Linux kernel (see link).
Link: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=803e9895ea2b

Fixes: 0355c379b71f ("net/ixgbe: support VF promiscuous by PF driver")

Signed-off-by: Olivier Matz <olivier.matz at 6wind.com>
Acked-by: Wenjun Wu <wenjun1.wu at intel.com>
---
 drivers/net/ixgbe/ixgbe_pf.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ixgbe/ixgbe_pf.c b/drivers/net/ixgbe/ixgbe_pf.c
index 8ee83c1d71..7e75a114de 100644
--- a/drivers/net/ixgbe/ixgbe_pf.c
+++ b/drivers/net/ixgbe/ixgbe_pf.c
@@ -757,9 +757,9 @@ ixgbe_set_vf_mc_promisc(struct rte_eth_dev *dev, uint32_t vf, uint32_t *msgbuf)
 
 	switch (xcast_mode) {
 	case IXGBEVF_XCAST_MODE_NONE:
-		disable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE |
+		disable = IXGBE_VMOLR_ROMPE |
 			  IXGBE_VMOLR_MPE | IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE;
-		enable = 0;
+		enable = IXGBE_VMOLR_BAM;
 		break;
 	case IXGBEVF_XCAST_MODE_MULTI:
 		disable = IXGBE_VMOLR_MPE | IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE;
-- 
2.34.1

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2022-11-05 17:11:11.228705745 +0000
+++ 0029-net-ixgbe-fix-broadcast-Rx-on-VF-after-promisc-remov.patch	2022-11-05 17:11:08.734943930 +0000
@@ -1 +1 @@
-From 8260929205e5a2666f9db697f749a2d23273bb86 Mon Sep 17 00:00:00 2001
+From c548e48860b1475d19d8b6c8b43ee619a0d9c14b Mon Sep 17 00:00:00 2001
@@ -5,0 +6,2 @@
+[ upstream commit 8260929205e5a2666f9db697f749a2d23273bb86 ]
+
@@ -18 +19,0 @@
-Cc: stable at dpdk.org
@@ -27 +28 @@
-index c73833b7ae..c5ef940533 100644
+index 8ee83c1d71..7e75a114de 100644
@@ -30 +31 @@
-@@ -747,9 +747,9 @@ ixgbe_set_vf_mc_promisc(struct rte_eth_dev *dev, uint32_t vf, uint32_t *msgbuf)
+@@ -757,9 +757,9 @@ ixgbe_set_vf_mc_promisc(struct rte_eth_dev *dev, uint32_t vf, uint32_t *msgbuf)