1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2 #ifndef _LINUX_ATMBR2684_H 3 #define _LINUX_ATMBR2684_H 4 5 #include <linux/types.h> 6 #include <linux/atm.h> 7 #include <linux/if.h> /* For IFNAMSIZ */ 8 9 /* 10 * Type of media we're bridging (ethernet, token ring, etc) Currently only 11 * ethernet is supported 12 */ 13 #define BR2684_MEDIA_ETHERNET (0) /* 802.3 */ 14 #define BR2684_MEDIA_802_4 (1) /* 802.4 */ 15 #define BR2684_MEDIA_TR (2) /* 802.5 - token ring */ 16 #define BR2684_MEDIA_FDDI (3) 17 #define BR2684_MEDIA_802_6 (4) /* 802.6 */ 18 19 /* used only at device creation: */ 20 #define BR2684_FLAG_ROUTED (1<<16) /* payload is routed, not bridged */ 21 22 /* 23 * Is there FCS inbound on this VC? This currently isn't supported. 24 */ 25 #define BR2684_FCSIN_NO (0) 26 #define BR2684_FCSIN_IGNORE (1) 27 #define BR2684_FCSIN_VERIFY (2) 28 29 /* 30 * Is there FCS outbound on this VC? This currently isn't supported. 31 */ 32 #define BR2684_FCSOUT_NO (0) 33 #define BR2684_FCSOUT_SENDZERO (1) 34 #define BR2684_FCSOUT_GENERATE (2) 35 36 /* 37 * Does this VC include LLC encapsulation? 38 */ 39 #define BR2684_ENCAPS_VC (0) /* VC-mux */ 40 #define BR2684_ENCAPS_LLC (1) 41 #define BR2684_ENCAPS_AUTODETECT (2) /* Unsuported */ 42 43 /* 44 * Is this VC bridged or routed? 45 */ 46 47 #define BR2684_PAYLOAD_ROUTED (0) 48 #define BR2684_PAYLOAD_BRIDGED (1) 49 50 /* 51 * This is for the ATM_NEWBACKENDIF call - these are like socket families: 52 * the first element of the structure is the backend number and the rest 53 * is per-backend specific 54 */ 55 struct atm_newif_br2684 { 56 atm_backend_t backend_num; /* ATM_BACKEND_BR2684 */ 57 int media; /* BR2684_MEDIA_*, flags in upper bits */ 58 char ifname[IFNAMSIZ]; 59 int mtu; 60 }; 61 62 /* 63 * This structure is used to specify a br2684 interface - either by a 64 * positive integer (returned by ATM_NEWBACKENDIF) or the interfaces name 65 */ 66 #define BR2684_FIND_BYNOTHING (0) 67 #define BR2684_FIND_BYNUM (1) 68 #define BR2684_FIND_BYIFNAME (2) 69 struct br2684_if_spec { 70 int method; /* BR2684_FIND_* */ 71 union { 72 char ifname[IFNAMSIZ]; 73 int devnum; 74 } spec; 75 }; 76 77 /* 78 * This is for the ATM_SETBACKEND call - these are like socket families: 79 * the first element of the structure is the backend number and the rest 80 * is per-backend specific 81 */ 82 struct atm_backend_br2684 { 83 atm_backend_t backend_num; /* ATM_BACKEND_BR2684 */ 84 struct br2684_if_spec ifspec; 85 int fcs_in; /* BR2684_FCSIN_* */ 86 int fcs_out; /* BR2684_FCSOUT_* */ 87 int fcs_auto; /* 1: fcs_{in,out} disabled if no FCS rx'ed */ 88 int encaps; /* BR2684_ENCAPS_* */ 89 int has_vpiid; /* 1: use vpn_id - Unsupported */ 90 __u8 vpn_id[7]; 91 int send_padding; /* unsupported */ 92 int min_size; /* we will pad smaller packets than this */ 93 }; 94 95 /* 96 * The BR2684_SETFILT ioctl is an experimental mechanism for folks 97 * terminating a large number of IP-only vcc's. When netfilter allows 98 * efficient per-if in/out filters, this support will be removed 99 */ 100 struct br2684_filter { 101 __be32 prefix; /* network byte order */ 102 __be32 netmask; /* 0 = disable filter */ 103 }; 104 105 struct br2684_filter_set { 106 struct br2684_if_spec ifspec; 107 struct br2684_filter filter; 108 }; 109 110 enum br2684_payload { 111 p_routed = BR2684_PAYLOAD_ROUTED, 112 p_bridged = BR2684_PAYLOAD_BRIDGED, 113 }; 114 115 #define BR2684_SETFILT _IOW( 'a', ATMIOC_BACKEND + 0, \ 116 struct br2684_filter_set) 117 118 #endif /* _LINUX_ATMBR2684_H */ 119