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// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
/* Copyright (C) 2018 Netronome Systems, Inc */
/* Copyright (C) 2021 Corigine, Inc */
#include <net/xfrm.h>
#include "../nfp_net.h"
#include "nfd3.h"
void nfp_nfd3_ipsec_tx(struct nfp_nfd3_tx_desc *txd, struct sk_buff *skb)
{
struct xfrm_state *x = xfrm_input_state(skb);
struct xfrm_offload *xo = xfrm_offload(skb);
struct iphdr *iph = ip_hdr(skb);
int l4_proto;
if (x->xso.dev && (x->xso.dev->features & NETIF_F_HW_ESP_TX_CSUM)) {
txd->flags |= NFD3_DESC_TX_CSUM;
if (iph->version == 4)
txd->flags |= NFD3_DESC_TX_IP4_CSUM;
if (x->props.mode == XFRM_MODE_TRANSPORT)
l4_proto = xo->proto;
else if (x->props.mode == XFRM_MODE_TUNNEL)
l4_proto = xo->inner_ipproto;
else
return;
switch (l4_proto) {
case IPPROTO_UDP:
txd->flags |= NFD3_DESC_TX_UDP_CSUM;
return;
case IPPROTO_TCP:
txd->flags |= NFD3_DESC_TX_TCP_CSUM;
return;
}
}
}
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