diff options
Diffstat (limited to 'debian/patches/features/all/ethernet-microsoft/0027-net-mana-Use-the-correct-WQE-count-for-ringing-RQ-do.patch')
| -rw-r--r-- | debian/patches/features/all/ethernet-microsoft/0027-net-mana-Use-the-correct-WQE-count-for-ringing-RQ-do.patch | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/debian/patches/features/all/ethernet-microsoft/0027-net-mana-Use-the-correct-WQE-count-for-ringing-RQ-do.patch b/debian/patches/features/all/ethernet-microsoft/0027-net-mana-Use-the-correct-WQE-count-for-ringing-RQ-do.patch new file mode 100644 index 000000000..d0bb113fc --- /dev/null +++ b/debian/patches/features/all/ethernet-microsoft/0027-net-mana-Use-the-correct-WQE-count-for-ringing-RQ-do.patch @@ -0,0 +1,41 @@ +From ac7f97738c05e80f7de5e4ccbbf1ea82fdad956c Mon Sep 17 00:00:00 2001 +From: Long Li <longli@microsoft.com> +Date: Mon, 17 Jul 2023 12:35:39 -0700 +Subject: [PATCH 27/30] net: mana: Use the correct WQE count for ringing RQ + doorbell + +The hardware specification specifies that WQE_COUNT should set to 0 for +the Receive Queue. Although currently the hardware doesn't enforce the +check, in the future releases it may check on this value. + +Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> +Reviewed-by: Dexuan Cui <decui@microsoft.com> +Signed-off-by: Long Li <longli@microsoft.com> +Link: https://lore.kernel.org/r/1689622539-5334-3-git-send-email-longli@linuxonhyperv.com +Signed-off-by: Jakub Kicinski <kuba@kernel.org> +(cherry picked from commit f5e39b57124fd4715d7f0e2f841b8609b38f3e40) +Signed-off-by: Bastian Blank <waldi@debian.org> +--- + drivers/net/ethernet/microsoft/mana/gdma_main.c | 5 ++++- + 1 file changed, 4 insertions(+), 1 deletion(-) + +diff --git a/drivers/net/ethernet/microsoft/mana/gdma_main.c b/drivers/net/ethernet/microsoft/mana/gdma_main.c +index 97a1845c676a..6108a481edcb 100644 +--- a/drivers/net/ethernet/microsoft/mana/gdma_main.c ++++ b/drivers/net/ethernet/microsoft/mana/gdma_main.c +@@ -300,8 +300,11 @@ static void mana_gd_ring_doorbell(struct gdma_context *gc, u32 db_index, + + void mana_gd_wq_ring_doorbell(struct gdma_context *gc, struct gdma_queue *queue) + { ++ /* Hardware Spec specifies that software client should set 0 for ++ * wqe_cnt for Receive Queues. This value is not used in Send Queues. ++ */ + mana_gd_ring_doorbell(gc, queue->gdma_dev->doorbell, queue->type, +- queue->id, queue->head * GDMA_WQE_BU_SIZE, 1); ++ queue->id, queue->head * GDMA_WQE_BU_SIZE, 0); + } + + void mana_gd_ring_cq(struct gdma_queue *cq, u8 arm_bit) +-- +2.40.1 + |