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/*
* Copyright (c) 2018 Mellanox Technologies. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* OpenIB.org BSD license below:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*/
#ifndef __MLX5E_EN_ACCEL_H__
#define __MLX5E_EN_ACCEL_H__
#include <linux/skbuff.h>
#include <linux/netdevice.h>
#include "en_accel/ipsec_rxtx.h"
#include "en_accel/tls_rxtx.h"
#include "en.h"
#include "en/txrx.h"
#if IS_ENABLED(CONFIG_GENEVE)
static inline bool mlx5_geneve_tx_allowed(struct mlx5_core_dev *mdev)
{
return mlx5_tx_swp_supported(mdev);
}
static inline void
mlx5e_tx_tunnel_accel(struct sk_buff *skb, struct mlx5_wqe_eth_seg *eseg)
{
struct mlx5e_swp_spec swp_spec = {};
unsigned int offset = 0;
__be16 l3_proto;
u8 l4_proto;
l3_proto = vlan_get_protocol(skb);
switch (l3_proto) {
case htons(ETH_P_IP):
l4_proto = ip_hdr(skb)->protocol;
break;
case htons(ETH_P_IPV6):
l4_proto = ipv6_find_hdr(skb, &offset, -1, NULL, NULL);
break;
default:
return;
}
if (l4_proto != IPPROTO_UDP ||
udp_hdr(skb)->dest != cpu_to_be16(GENEVE_UDP_PORT))
return;
swp_spec.l3_proto = l3_proto;
swp_spec.l4_proto = l4_proto;
swp_spec.is_tun = true;
if (inner_ip_hdr(skb)->version == 6) {
swp_spec.tun_l3_proto = htons(ETH_P_IPV6);
swp_spec.tun_l4_proto = inner_ipv6_hdr(skb)->nexthdr;
} else {
swp_spec.tun_l3_proto = htons(ETH_P_IP);
swp_spec.tun_l4_proto = inner_ip_hdr(skb)->protocol;
}
mlx5e_set_eseg_swp(skb, eseg, &swp_spec);
}
#else
static inline bool mlx5_geneve_tx_allowed(struct mlx5_core_dev *mdev)
{
return false;
}
#endif /* CONFIG_GENEVE */
static inline void
mlx5e_udp_gso_handle_tx_skb(struct sk_buff *skb)
{
int payload_len = skb_shinfo(skb)->gso_size + sizeof(struct udphdr);
udp_hdr(skb)->len = htons(payload_len);
}
static inline struct sk_buff *
mlx5e_accel_handle_tx(struct sk_buff *skb,
struct mlx5e_txqsq *sq,
struct net_device *dev,
struct mlx5e_tx_wqe **wqe,
u16 *pi)
{
#ifdef CONFIG_MLX5_EN_TLS
if (test_bit(MLX5E_SQ_STATE_TLS, &sq->state)) {
skb = mlx5e_tls_handle_tx_skb(dev, sq, skb, wqe, pi);
if (unlikely(!skb))
return NULL;
}
#endif
#ifdef CONFIG_MLX5_EN_IPSEC
if (test_bit(MLX5E_SQ_STATE_IPSEC, &sq->state)) {
skb = mlx5e_ipsec_handle_tx_skb(dev, *wqe, skb);
if (unlikely(!skb))
return NULL;
}
#endif
if (skb_is_gso(skb) && skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4)
mlx5e_udp_gso_handle_tx_skb(skb);
return skb;
}
#endif /* __MLX5E_EN_ACCEL_H__ */
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