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From c9d31486fdae4b164c97e04dd1c3e6a1f82f7cba Mon Sep 17 00:00:00 2001
From: Ajay Sharma <sharmaajay@microsoft.com>
Date: Thu, 3 Nov 2022 12:16:27 -0700
Subject: [PATCH 11/44] net: mana: Define and process GDMA response code
GDMA_STATUS_MORE_ENTRIES
When doing memory registration, the PF may respond with
GDMA_STATUS_MORE_ENTRIES to indicate a follow request is needed. This is
not an error and should be processed as expected.
Signed-off-by: Ajay Sharma <sharmaajay@microsoft.com>
Reviewed-by: Dexuan Cui <decui@microsoft.com>
Signed-off-by: Long Li <longli@microsoft.com>
Link: https://lore.kernel.org/r/1667502990-2559-10-git-send-email-longli@linuxonhyperv.com
Acked-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
(cherry picked from commit de372f2a9ca7ada2698ecac7df8f02407cd98fa0)
Signed-off-by: Bastian Blank <waldi@debian.org>
---
drivers/net/ethernet/microsoft/mana/hw_channel.c | 2 +-
include/net/mana/gdma.h | 2 ++
2 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/microsoft/mana/hw_channel.c b/drivers/net/ethernet/microsoft/mana/hw_channel.c
index f2e25f97e4c2..fdf1cc83c9a1 100644
--- a/drivers/net/ethernet/microsoft/mana/hw_channel.c
+++ b/drivers/net/ethernet/microsoft/mana/hw_channel.c
@@ -842,7 +842,7 @@ int mana_hwc_send_request(struct hw_channel_context *hwc, u32 req_len,
goto out;
}
- if (ctx->status_code) {
+ if (ctx->status_code && ctx->status_code != GDMA_STATUS_MORE_ENTRIES) {
dev_err(hwc->dev, "HWC: Failed hw_channel req: 0x%x\n",
ctx->status_code);
err = -EPROTO;
diff --git a/include/net/mana/gdma.h b/include/net/mana/gdma.h
index 11fc1cc67c01..202ac405ab59 100644
--- a/include/net/mana/gdma.h
+++ b/include/net/mana/gdma.h
@@ -9,6 +9,8 @@
#include "shm_channel.h"
+#define GDMA_STATUS_MORE_ENTRIES 0x00000105
+
/* Structures labeled with "HW DATA" are exchanged with the hardware. All of
* them are naturally aligned and hence don't need __packed.
*/
--
2.49.0
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