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       1                 :            : /*
       2                 :            :  * Copyright (c) 2010, 2011, 2013, 2015 Nicira, Inc.
       3                 :            :  *
       4                 :            :  * Licensed under the Apache License, Version 2.0 (the "License");
       5                 :            :  * you may not use this file except in compliance with the License.
       6                 :            :  * You may obtain a copy of the License at:
       7                 :            :  *
       8                 :            :  *     http://www.apache.org/licenses/LICENSE-2.0
       9                 :            :  *
      10                 :            :  * Unless required by applicable law or agreed to in writing, software
      11                 :            :  * distributed under the License is distributed on an "AS IS" BASIS,
      12                 :            :  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
      13                 :            :  * See the License for the specific language governing permissions and
      14                 :            :  * limitations under the License.
      15                 :            :  */
      16                 :            : 
      17                 :            : #ifndef NETDEV_VPORT_NATIVE_TNL_H
      18                 :            : #define NETDEV_VPORT_NATIVE_TNL_H 1
      19                 :            : 
      20                 :            : #include <stdbool.h>
      21                 :            : #include <stddef.h>
      22                 :            : #include "compiler.h"
      23                 :            : #include "dp-packet.h"
      24                 :            : #include "packets.h"
      25                 :            : #include "unixctl.h"
      26                 :            : 
      27                 :            : struct netdev;
      28                 :            : struct ovs_action_push_tnl;
      29                 :            : struct netdev_tnl_build_header_params;
      30                 :            : 
      31                 :            : int
      32                 :            : netdev_gre_build_header(const struct netdev *netdev,
      33                 :            :                         struct ovs_action_push_tnl *data,
      34                 :            :                         const struct netdev_tnl_build_header_params *params);
      35                 :            : 
      36                 :            : void
      37                 :            : netdev_gre_push_header(struct dp_packet *packet,
      38                 :            :                        const struct ovs_action_push_tnl *data);
      39                 :            : struct dp_packet *
      40                 :            : netdev_gre_pop_header(struct dp_packet *packet);
      41                 :            : 
      42                 :            : void
      43                 :            : netdev_tnl_push_udp_header(struct dp_packet *packet,
      44                 :            :                            const struct ovs_action_push_tnl *data);
      45                 :            : int
      46                 :            : netdev_geneve_build_header(const struct netdev *netdev,
      47                 :            :                            struct ovs_action_push_tnl *data,
      48                 :            :                            const struct netdev_tnl_build_header_params *params);
      49                 :            : 
      50                 :            : struct dp_packet *
      51                 :            : netdev_geneve_pop_header(struct dp_packet *packet);
      52                 :            : 
      53                 :            : int
      54                 :            : netdev_vxlan_build_header(const struct netdev *netdev,
      55                 :            :                           struct ovs_action_push_tnl *data,
      56                 :            :                           const struct netdev_tnl_build_header_params *params);
      57                 :            : 
      58                 :            : struct dp_packet *
      59                 :            : netdev_vxlan_pop_header(struct dp_packet *packet);
      60                 :            : 
      61                 :            : static inline bool
      62                 :       5672 : netdev_tnl_is_header_ipv6(const void *header)
      63                 :            : {
      64                 :            :     const struct eth_header *eth;
      65                 :       5672 :     eth = header;
      66                 :       5672 :     return eth->eth_type == htons(ETH_TYPE_IPV6);
      67                 :            : }
      68                 :            : 
      69                 :            : static inline struct ip_header *
      70                 :       3781 : netdev_tnl_ip_hdr(void *eth)
      71                 :            : {
      72                 :       3781 :     return (void *)((char *)eth + sizeof (struct eth_header));
      73                 :            : }
      74                 :            : 
      75                 :            : static inline struct ovs_16aligned_ip6_hdr *
      76                 :          2 : netdev_tnl_ipv6_hdr(void *eth)
      77                 :            : {
      78                 :          2 :     return (void *)((char *)eth + sizeof (struct eth_header));
      79                 :            : }
      80                 :            : 
      81                 :            : void *
      82                 :            : netdev_tnl_ip_build_header(struct ovs_action_push_tnl *data,
      83                 :            :                            const struct netdev_tnl_build_header_params *params,
      84                 :            :                            uint8_t next_proto);
      85                 :            : 
      86                 :            : extern uint16_t tnl_udp_port_min;
      87                 :            : extern uint16_t tnl_udp_port_max;
      88                 :            : 
      89                 :            : static inline ovs_be16
      90                 :       1899 : netdev_tnl_get_src_port(struct dp_packet *packet)
      91                 :            : {
      92                 :            :     uint32_t hash;
      93                 :            : 
      94                 :       1899 :     hash = dp_packet_get_rss_hash(packet);
      95                 :            : 
      96                 :       1899 :     return htons((((uint64_t) hash * (tnl_udp_port_max - tnl_udp_port_min)) >> 32) +
      97                 :            :                  tnl_udp_port_min);
      98                 :            : }
      99                 :            : 
     100                 :            : void *
     101                 :            : netdev_tnl_ip_extract_tnl_md(struct dp_packet *packet, struct flow_tnl *tnl,
     102                 :            :                              unsigned int *hlen);
     103                 :            : void *
     104                 :            : netdev_tnl_push_ip_header(struct dp_packet *packet,
     105                 :            :                           const void *header, int size, int *ip_tot_size);
     106                 :            : void
     107                 :            : netdev_tnl_egress_port_range(struct unixctl_conn *conn, int argc,
     108                 :            :                              const char *argv[], void *aux OVS_UNUSED);
     109                 :            : #endif