From 1543e317f1da31b75942316931e8f491a8920811 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Thu, 04 Jan 2024 10:08:02 +0000
Subject: [PATCH] disable FB
---
kernel/drivers/net/ethernet/sfc/tx.h | 32 ++++++++++++++++++++++++++------
1 files changed, 26 insertions(+), 6 deletions(-)
diff --git a/kernel/drivers/net/ethernet/sfc/tx.h b/kernel/drivers/net/ethernet/sfc/tx.h
index 1cccc97..f2c4d2f 100644
--- a/kernel/drivers/net/ethernet/sfc/tx.h
+++ b/kernel/drivers/net/ethernet/sfc/tx.h
@@ -1,11 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
/****************************************************************************
* Driver for Solarflare network controllers and boards
* Copyright 2005-2006 Fen Systems Ltd.
* Copyright 2006-2015 Solarflare Communications Inc.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 as published
- * by the Free Software Foundation, incorporated herein by reference.
*/
#ifndef EFX_TX_H
@@ -21,7 +18,30 @@
u8 *efx_tx_get_copy_buffer_limited(struct efx_tx_queue *tx_queue,
struct efx_tx_buffer *buffer, size_t len);
-int efx_enqueue_skb_tso(struct efx_tx_queue *tx_queue, struct sk_buff *skb,
- bool *data_mapped);
+/* What TXQ type will satisfy the checksum offloads required for this skb? */
+static inline unsigned int efx_tx_csum_type_skb(struct sk_buff *skb)
+{
+ if (skb->ip_summed != CHECKSUM_PARTIAL)
+ return 0; /* no checksum offload */
+ if (skb->encapsulation &&
+ skb_checksum_start_offset(skb) == skb_inner_transport_offset(skb)) {
+ /* we only advertise features for IPv4 and IPv6 checksums on
+ * encapsulated packets, so if the checksum is for the inner
+ * packet, it must be one of them; no further checking required.
+ */
+
+ /* Do we also need to offload the outer header checksum? */
+ if (skb_shinfo(skb)->gso_segs > 1 &&
+ !(skb_shinfo(skb)->gso_type & SKB_GSO_PARTIAL) &&
+ (skb_shinfo(skb)->gso_type & SKB_GSO_UDP_TUNNEL_CSUM))
+ return EFX_TXQ_TYPE_OUTER_CSUM | EFX_TXQ_TYPE_INNER_CSUM;
+ return EFX_TXQ_TYPE_INNER_CSUM;
+ }
+
+ /* similarly, we only advertise features for IPv4 and IPv6 checksums,
+ * so it must be one of them. No need for further checks.
+ */
+ return EFX_TXQ_TYPE_OUTER_CSUM;
+}
#endif /* EFX_TX_H */
--
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