vector_user.h 2.5 KB

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  1. /* SPDX-License-Identifier: GPL-2.0 */
  2. /*
  3. * Copyright (C) 2002 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
  4. */
  5. #ifndef __UM_VECTOR_USER_H
  6. #define __UM_VECTOR_USER_H
  7. #define MAXVARGS 20
  8. #define TOKEN_IFNAME "ifname"
  9. #define TRANS_RAW "raw"
  10. #define TRANS_RAW_LEN strlen(TRANS_RAW)
  11. #define TRANS_TAP "tap"
  12. #define TRANS_TAP_LEN strlen(TRANS_TAP)
  13. #define TRANS_GRE "gre"
  14. #define TRANS_GRE_LEN strlen(TRANS_GRE)
  15. #define TRANS_L2TPV3 "l2tpv3"
  16. #define TRANS_L2TPV3_LEN strlen(TRANS_L2TPV3)
  17. #define TRANS_HYBRID "hybrid"
  18. #define TRANS_HYBRID_LEN strlen(TRANS_HYBRID)
  19. #define TRANS_BESS "bess"
  20. #define TRANS_BESS_LEN strlen(TRANS_BESS)
  21. #define DEFAULT_BPF_LEN 6
  22. #ifndef IPPROTO_GRE
  23. #define IPPROTO_GRE 0x2F
  24. #endif
  25. #define GRE_MODE_CHECKSUM cpu_to_be16(8 << 12) /* checksum */
  26. #define GRE_MODE_RESERVED cpu_to_be16(4 << 12) /* unused */
  27. #define GRE_MODE_KEY cpu_to_be16(2 << 12) /* KEY present */
  28. #define GRE_MODE_SEQUENCE cpu_to_be16(1 << 12) /* sequence */
  29. #define GRE_IRB cpu_to_be16(0x6558)
  30. #define L2TPV3_DATA_PACKET 0x30000
  31. /* IANA-assigned IP protocol ID for L2TPv3 */
  32. #ifndef IPPROTO_L2TP
  33. #define IPPROTO_L2TP 0x73
  34. #endif
  35. struct arglist {
  36. int numargs;
  37. char *tokens[MAXVARGS];
  38. char *values[MAXVARGS];
  39. };
  40. /* Separating read and write FDs allows us to have different
  41. * rx and tx method. Example - read tap via raw socket using
  42. * recvmmsg, write using legacy tap write calls
  43. */
  44. struct vector_fds {
  45. int rx_fd;
  46. int tx_fd;
  47. void *remote_addr;
  48. int remote_addr_size;
  49. };
  50. #define VECTOR_READ 1
  51. #define VECTOR_WRITE (1 < 1)
  52. #define VECTOR_HEADERS (1 < 2)
  53. extern struct arglist *uml_parse_vector_ifspec(char *arg);
  54. extern struct vector_fds *uml_vector_user_open(
  55. int unit,
  56. struct arglist *parsed
  57. );
  58. extern char *uml_vector_fetch_arg(
  59. struct arglist *ifspec,
  60. char *token
  61. );
  62. extern int uml_vector_recvmsg(int fd, void *hdr, int flags);
  63. extern int uml_vector_sendmsg(int fd, void *hdr, int flags);
  64. extern int uml_vector_writev(int fd, void *hdr, int iovcount);
  65. extern int uml_vector_sendmmsg(
  66. int fd, void *msgvec,
  67. unsigned int vlen,
  68. unsigned int flags
  69. );
  70. extern int uml_vector_recvmmsg(
  71. int fd,
  72. void *msgvec,
  73. unsigned int vlen,
  74. unsigned int flags
  75. );
  76. extern void *uml_vector_default_bpf(void *mac);
  77. extern void *uml_vector_user_bpf(char *filename);
  78. extern int uml_vector_attach_bpf(int fd, void *bpf);
  79. extern int uml_vector_detach_bpf(int fd, void *bpf);
  80. extern bool uml_raw_enable_qdisc_bypass(int fd);
  81. extern bool uml_raw_enable_vnet_headers(int fd);
  82. extern bool uml_tap_enable_vnet_headers(int fd);
  83. #endif