| 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 | |
| 10 | void 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 | else |
| 28 | 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 |