ceph/src/seastar/dpdk/drivers/net/virtio/virtio_user/vhost_kernel_tap.h

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2016 Intel Corporation
   3  */
   4
   5 #include <sys/ioctl.h>
   6
   7 /* TUN ioctls */
   8 #define TUNSETIFF     _IOW('T', 202, int)
   9 #define TUNGETFEATURES _IOR('T', 207, unsigned int)
  10 #define TUNSETOFFLOAD  _IOW('T', 208, unsigned int)
  11 #define TUNGETIFF      _IOR('T', 210, unsigned int)
  12 #define TUNSETSNDBUF   _IOW('T', 212, int)
  13 #define TUNGETVNETHDRSZ _IOR('T', 215, int)
  14 #define TUNSETVNETHDRSZ _IOW('T', 216, int)
  15 #define TUNSETQUEUE  _IOW('T', 217, int)
  16 #define TUNSETVNETLE _IOW('T', 220, int)
  17 #define TUNSETVNETBE _IOW('T', 222, int)
  18
  19 /* TUNSETIFF ifr flags */
  20 #define IFF_TAP          0x0002
  21 #define IFF_NO_PI        0x1000
  22 #define IFF_ONE_QUEUE    0x2000
  23 #define IFF_VNET_HDR     0x4000
  24 #define IFF_MULTI_QUEUE  0x0100
  25 #define IFF_ATTACH_QUEUE 0x0200
  26 #define IFF_DETACH_QUEUE 0x0400
  27
  28 /* Features for GSO (TUNSETOFFLOAD). */
  29 #define TUN_F_CSUM      0x01    /* You can hand me unchecksummed packets. */
  30 #define TUN_F_TSO4      0x02    /* I can handle TSO for IPv4 packets */
  31 #define TUN_F_TSO6      0x04    /* I can handle TSO for IPv6 packets */
  32 #define TUN_F_TSO_ECN   0x08    /* I can handle TSO with ECN bits. */
  33 #define TUN_F_UFO       0x10    /* I can handle UFO packets */
  34
  35 /* Constants */
  36 #define PATH_NET_TUN    "/dev/net/tun"
  37
  38 int vhost_kernel_open_tap(char **p_ifname, int hdr_size, int req_mq,
  39                          const char *mac, uint64_t features);