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1// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)2/* Copyright (C) 2018 Netronome Systems, Inc */3/* Copyright (C) 2021 Corigine, Inc */4 5#include <net/xfrm.h>6 7#include "../nfp_net.h"8#include "nfd3.h"9 10void nfp_nfd3_ipsec_tx(struct nfp_nfd3_tx_desc *txd, struct sk_buff *skb)11{12 struct xfrm_state *x = xfrm_input_state(skb);13 struct xfrm_offload *xo = xfrm_offload(skb);14 struct iphdr *iph = ip_hdr(skb);15 int l4_proto;16 17 if (x->xso.dev && (x->xso.dev->features & NETIF_F_HW_ESP_TX_CSUM)) {18 txd->flags |= NFD3_DESC_TX_CSUM;19 20 if (iph->version == 4)21 txd->flags |= NFD3_DESC_TX_IP4_CSUM;22 23 if (x->props.mode == XFRM_MODE_TRANSPORT)24 l4_proto = xo->proto;25 else if (x->props.mode == XFRM_MODE_TUNNEL)26 l4_proto = xo->inner_ipproto;27 else28 return;29 30 switch (l4_proto) {31 case IPPROTO_UDP:32 txd->flags |= NFD3_DESC_TX_UDP_CSUM;33 return;34 case IPPROTO_TCP:35 txd->flags |= NFD3_DESC_TX_TCP_CSUM;36 return;37 }38 }39}40