drivers/net/ethernet/mellanox/mlx5/core/en

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This source file includes following definitions.
mlx5e_tls_set_ipv4_flow
mlx5e_tls_set_ipv6_flow
mlx5e_tls_set_flow_tcp_ports
mlx5e_tls_set_flow
mlx5e_tls_add
mlx5e_tls_del
mlx5e_tls_resync
mlx5e_tls_build_netdev
mlx5e_tls_init
mlx5e_tls_cleanup
   1 /*
   2  * Copyright (c) 2018 Mellanox Technologies. All rights reserved.
   3  *
   4  * This software is available to you under a choice of one of two
   5  * licenses.  You may choose to be licensed under the terms of the GNU
   6  * General Public License (GPL) Version 2, available from the file
   7  * COPYING in the main directory of this source tree, or the
   8  * OpenIB.org BSD license below:
   9  *
  10  *     Redistribution and use in source and binary forms, with or
  11  *     without modification, are permitted provided that the following
  12  *     conditions are met:
  13  *
  14  *      - Redistributions of source code must retain the above
  15  *        copyright notice, this list of conditions and the following
  16  *        disclaimer.
  17  *
  18  *      - Redistributions in binary form must reproduce the above
  19  *        copyright notice, this list of conditions and the following
  20  *        disclaimer in the documentation and/or other materials
  21  *        provided with the distribution.
  22  *
  23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30  * SOFTWARE.
  31  *
  32  */
  33 
  34 #include <linux/netdevice.h>
  35 #include <net/ipv6.h>
  36 #include "en_accel/tls.h"
  37 #include "accel/tls.h"
  38 
  39 static void mlx5e_tls_set_ipv4_flow(void *flow, struct sock *sk)
  40 {
  41         struct inet_sock *inet = inet_sk(sk);
  42 
  43         MLX5_SET(tls_flow, flow, ipv6, 0);
  44         memcpy(MLX5_ADDR_OF(tls_flow, flow, dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
  45                &inet->inet_daddr, MLX5_FLD_SZ_BYTES(ipv4_layout, ipv4));
  46         memcpy(MLX5_ADDR_OF(tls_flow, flow, src_ipv4_src_ipv6.ipv4_layout.ipv4),
  47                &inet->inet_rcv_saddr, MLX5_FLD_SZ_BYTES(ipv4_layout, ipv4));
  48 }
  49 
  50 #if IS_ENABLED(CONFIG_IPV6)
  51 static void mlx5e_tls_set_ipv6_flow(void *flow, struct sock *sk)
  52 {
  53         struct ipv6_pinfo *np = inet6_sk(sk);
  54 
  55         MLX5_SET(tls_flow, flow, ipv6, 1);
  56         memcpy(MLX5_ADDR_OF(tls_flow, flow, dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
  57                &sk->sk_v6_daddr, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6));
  58         memcpy(MLX5_ADDR_OF(tls_flow, flow, src_ipv4_src_ipv6.ipv6_layout.ipv6),
  59                &np->saddr, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6));
  60 }
  61 #endif
  62 
  63 static void mlx5e_tls_set_flow_tcp_ports(void *flow, struct sock *sk)
  64 {
  65         struct inet_sock *inet = inet_sk(sk);
  66 
  67         memcpy(MLX5_ADDR_OF(tls_flow, flow, src_port), &inet->inet_sport,
  68                MLX5_FLD_SZ_BYTES(tls_flow, src_port));
  69         memcpy(MLX5_ADDR_OF(tls_flow, flow, dst_port), &inet->inet_dport,
  70                MLX5_FLD_SZ_BYTES(tls_flow, dst_port));
  71 }
  72 
  73 static int mlx5e_tls_set_flow(void *flow, struct sock *sk, u32 caps)
  74 {
  75         switch (sk->sk_family) {
  76         case AF_INET:
  77                 mlx5e_tls_set_ipv4_flow(flow, sk);
  78                 break;
  79 #if IS_ENABLED(CONFIG_IPV6)
  80         case AF_INET6:
  81                 if (!sk->sk_ipv6only &&
  82                     ipv6_addr_type(&sk->sk_v6_daddr) == IPV6_ADDR_MAPPED) {
  83                         mlx5e_tls_set_ipv4_flow(flow, sk);
  84                         break;
  85                 }
  86                 if (!(caps & MLX5_ACCEL_TLS_IPV6))
  87                         goto error_out;
  88 
  89                 mlx5e_tls_set_ipv6_flow(flow, sk);
  90                 break;
  91 #endif
  92         default:
  93                 goto error_out;
  94         }
  95 
  96         mlx5e_tls_set_flow_tcp_ports(flow, sk);
  97         return 0;
  98 error_out:
  99         return -EINVAL;
 100 }
 101 
 102 static int mlx5e_tls_add(struct net_device *netdev, struct sock *sk,
 103                          enum tls_offload_ctx_dir direction,
 104                          struct tls_crypto_info *crypto_info,
 105                          u32 start_offload_tcp_sn)
 106 {
 107         struct mlx5e_priv *priv = netdev_priv(netdev);
 108         struct tls_context *tls_ctx = tls_get_ctx(sk);
 109         struct mlx5_core_dev *mdev = priv->mdev;
 110         u32 caps = mlx5_accel_tls_device_caps(mdev);
 111         int ret = -ENOMEM;
 112         void *flow;
 113         u32 swid;
 114 
 115         flow = kzalloc(MLX5_ST_SZ_BYTES(tls_flow), GFP_KERNEL);
 116         if (!flow)
 117                 return ret;
 118 
 119         ret = mlx5e_tls_set_flow(flow, sk, caps);
 120         if (ret)
 121                 goto free_flow;
 122 
 123         ret = mlx5_accel_tls_add_flow(mdev, flow, crypto_info,
 124                                       start_offload_tcp_sn, &swid,
 125                                       direction == TLS_OFFLOAD_CTX_DIR_TX);
 126         if (ret < 0)
 127                 goto free_flow;
 128 
 129         if (direction == TLS_OFFLOAD_CTX_DIR_TX) {
 130                 struct mlx5e_tls_offload_context_tx *tx_ctx =
 131                     mlx5e_get_tls_tx_context(tls_ctx);
 132 
 133                 tx_ctx->swid = htonl(swid);
 134                 tx_ctx->expected_seq = start_offload_tcp_sn;
 135         } else {
 136                 struct mlx5e_tls_offload_context_rx *rx_ctx =
 137                     mlx5e_get_tls_rx_context(tls_ctx);
 138 
 139                 rx_ctx->handle = htonl(swid);
 140         }
 141 
 142         return 0;
 143 free_flow:
 144         kfree(flow);
 145         return ret;
 146 }
 147 
 148 static void mlx5e_tls_del(struct net_device *netdev,
 149                           struct tls_context *tls_ctx,
 150                           enum tls_offload_ctx_dir direction)
 151 {
 152         struct mlx5e_priv *priv = netdev_priv(netdev);
 153         unsigned int handle;
 154 
 155         handle = ntohl((direction == TLS_OFFLOAD_CTX_DIR_TX) ?
 156                        mlx5e_get_tls_tx_context(tls_ctx)->swid :
 157                        mlx5e_get_tls_rx_context(tls_ctx)->handle);
 158 
 159         mlx5_accel_tls_del_flow(priv->mdev, handle,
 160                                 direction == TLS_OFFLOAD_CTX_DIR_TX);
 161 }
 162 
 163 static int mlx5e_tls_resync(struct net_device *netdev, struct sock *sk,
 164                             u32 seq, u8 *rcd_sn_data,
 165                             enum tls_offload_ctx_dir direction)
 166 {
 167         struct tls_context *tls_ctx = tls_get_ctx(sk);
 168         struct mlx5e_priv *priv = netdev_priv(netdev);
 169         struct mlx5e_tls_offload_context_rx *rx_ctx;
 170         u64 rcd_sn = *(u64 *)rcd_sn_data;
 171 
 172         if (WARN_ON_ONCE(direction != TLS_OFFLOAD_CTX_DIR_RX))
 173                 return -EINVAL;
 174         rx_ctx = mlx5e_get_tls_rx_context(tls_ctx);
 175 
 176         netdev_info(netdev, "resyncing seq %d rcd %lld\n", seq,
 177                     be64_to_cpu(rcd_sn));
 178         mlx5_accel_tls_resync_rx(priv->mdev, rx_ctx->handle, seq, rcd_sn);
 179         atomic64_inc(&priv->tls->sw_stats.rx_tls_resync_reply);
 180 
 181         return 0;
 182 }
 183 
 184 static const struct tlsdev_ops mlx5e_tls_ops = {
 185         .tls_dev_add = mlx5e_tls_add,
 186         .tls_dev_del = mlx5e_tls_del,
 187         .tls_dev_resync = mlx5e_tls_resync,
 188 };
 189 
 190 void mlx5e_tls_build_netdev(struct mlx5e_priv *priv)
 191 {
 192         struct net_device *netdev = priv->netdev;
 193         u32 caps;
 194 
 195         if (mlx5_accel_is_ktls_device(priv->mdev)) {
 196                 mlx5e_ktls_build_netdev(priv);
 197                 return;
 198         }
 199 
 200         if (!mlx5_accel_is_tls_device(priv->mdev))
 201                 return;
 202 
 203         caps = mlx5_accel_tls_device_caps(priv->mdev);
 204         if (caps & MLX5_ACCEL_TLS_TX) {
 205                 netdev->features          |= NETIF_F_HW_TLS_TX;
 206                 netdev->hw_features       |= NETIF_F_HW_TLS_TX;
 207         }
 208 
 209         if (caps & MLX5_ACCEL_TLS_RX) {
 210                 netdev->features          |= NETIF_F_HW_TLS_RX;
 211                 netdev->hw_features       |= NETIF_F_HW_TLS_RX;
 212         }
 213 
 214         if (!(caps & MLX5_ACCEL_TLS_LRO)) {
 215                 netdev->features          &= ~NETIF_F_LRO;
 216                 netdev->hw_features       &= ~NETIF_F_LRO;
 217         }
 218 
 219         netdev->tlsdev_ops = &mlx5e_tls_ops;
 220 }
 221 
 222 int mlx5e_tls_init(struct mlx5e_priv *priv)
 223 {
 224         struct mlx5e_tls *tls = kzalloc(sizeof(*tls), GFP_KERNEL);
 225 
 226         if (!tls)
 227                 return -ENOMEM;
 228 
 229         priv->tls = tls;
 230         return 0;
 231 }
 232 
 233 void mlx5e_tls_cleanup(struct mlx5e_priv *priv)
 234 {
 235         struct mlx5e_tls *tls = priv->tls;
 236 
 237         if (!tls)
 238                 return;
 239 
 240         kfree(tls);
 241         priv->tls = NULL;
 242 }
/* [<][>][^][v][top][bottom][index][help] */
root/drivers/net/ethernet/mellanox/mlx5/core/en_accel/tls.c

DEFINITIONS
