mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
synced 2025-09-07 14:19:35 +00:00
3e04419cbe
The csum flag of IPsec packet are set repeatedly. Therefore, the csum
flag set of IPsec and non-IPsec packet need to be distinguished.
As the ipv6 header does not have a csum field, so l3-csum flag is not
required to be set for ipv6 case.
L4-csum flag include the tcp csum flag and udp csum flag, we shouldn't
set the udp and tcp csum flag at the same time for one packet, should
set l4-csum flag according to the transport layer is tcp or udp.
Fixes: 57f273adbc ("nfp: add framework to support ipsec offloading")
Signed-off-by: Huanhuan Wang <huanhuan.wang@corigine.com>
Reviewed-by: Louis Peens <louis.peens@corigine.com>
Signed-off-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
40 lines
944 B
C
40 lines
944 B
C
// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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/* Copyright (C) 2018 Netronome Systems, Inc */
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/* Copyright (C) 2021 Corigine, Inc */
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#include <net/xfrm.h>
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#include "../nfp_net.h"
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#include "nfd3.h"
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void nfp_nfd3_ipsec_tx(struct nfp_nfd3_tx_desc *txd, struct sk_buff *skb)
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{
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struct xfrm_state *x = xfrm_input_state(skb);
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struct xfrm_offload *xo = xfrm_offload(skb);
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struct iphdr *iph = ip_hdr(skb);
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int l4_proto;
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if (x->xso.dev && (x->xso.dev->features & NETIF_F_HW_ESP_TX_CSUM)) {
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txd->flags |= NFD3_DESC_TX_CSUM;
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if (iph->version == 4)
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txd->flags |= NFD3_DESC_TX_IP4_CSUM;
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if (x->props.mode == XFRM_MODE_TRANSPORT)
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l4_proto = xo->proto;
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else if (x->props.mode == XFRM_MODE_TUNNEL)
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l4_proto = xo->inner_ipproto;
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else
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return;
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switch (l4_proto) {
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case IPPROTO_UDP:
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txd->flags |= NFD3_DESC_TX_UDP_CSUM;
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return;
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case IPPROTO_TCP:
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txd->flags |= NFD3_DESC_TX_TCP_CSUM;
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return;
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}
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}
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}
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