X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/5ba3f43ea354af8ad55bea84372a2bc834d8757c..b226f5e54a60dc81db17b1260381d7dbfea3cdf1:/bsd/net/pktap.h diff --git a/bsd/net/pktap.h b/bsd/net/pktap.h index 74b0b5bd1..25ed642fd 100644 --- a/bsd/net/pktap.h +++ b/bsd/net/pktap.h @@ -33,6 +33,7 @@ #include #include #include +#include #ifdef PRIVATE @@ -123,23 +124,113 @@ struct pktap_header { }; /* - * + * The original version 1 of the pktap_header structure always had the field + * pth_type_next set to PTH_TYPE_PACKET */ #define PTH_TYPE_NONE 0 /* No more data following */ #define PTH_TYPE_PACKET 1 /* Actual captured packet data */ -#define PTH_FLAG_DIR_IN 0x0001 /* Outgoing packet */ -#define PTH_FLAG_DIR_OUT 0x0002 /* Incoming packet */ -#define PTH_FLAG_PROC_DELEGATED 0x0004 /* Process delegated */ -#define PTH_FLAG_IF_DELEGATED 0x0008 /* Interface delegated */ +/* + * Size of buffer that can contain any pktap header + * followed by the optional 4 bytes protocol field + * or 16 bytes link layer header + */ +union pktap_header_extra { + uint8_t llhdr[16]; + uint32_t proto; +}; + +/* + * Version 2 version of the header + * + * The field pth_flags is at the same offset as the orignal pktap_header and + * the flag PTH_FLAG_V2_HDR allows to differentiate the header version. + */ + +#define PKTAP_MAX_COMM_SIZE (MAXCOMLEN + 1) + +struct pktap_v2_hdr { + uint8_t pth_length; /* length of this header */ + uint8_t pth_uuid_offset; /* max size: sizeof(uuid_t) */ + uint8_t pth_e_uuid_offset; /* max size: sizeof(uuid_t) */ + uint8_t pth_ifname_offset; /* max size: PKTAP_IFXNAMESIZE*/ + uint8_t pth_comm_offset; /* max size: PKTAP_MAX_COMM_SIZE */ + uint8_t pth_e_comm_offset; /* max size: PKTAP_MAX_COMM_SIZE */ + uint16_t pth_dlt; /* DLT of packet */ + uint16_t pth_frame_pre_length; + uint16_t pth_frame_post_length; + uint16_t pth_iftype; + uint16_t pth_ipproto; + uint32_t pth_protocol_family; + uint32_t pth_svc; /* service class */ + uint32_t pth_flowid; + pid_t pth_pid; /* process ID */ + pid_t pth_e_pid; /* effective process ID */ + uint32_t pth_flags; /* flags */ +}; + +struct pktap_v2_hdr_space { + struct pktap_v2_hdr pth_hdr; + uint8_t pth_uuid[sizeof(uuid_t)]; + uint8_t pth_e_uuid[sizeof(uuid_t)]; + uint8_t pth_ifname[PKTAP_IFXNAMESIZE]; + uint8_t pth_comm[PKTAP_MAX_COMM_SIZE]; + uint8_t pth_e_comm[PKTAP_MAX_COMM_SIZE]; +}; + +struct pktap_buffer_v2_hdr_extra { + struct pktap_v2_hdr_space hdr_space; + union pktap_header_extra extra; +}; + +#define COPY_PKTAP_COMMON_FIELDS_TO_V2(pktap_v2_hdr_dst, pktap_header_src) { \ + (pktap_v2_hdr_dst)->pth_length = sizeof(struct pktap_v2_hdr); \ + (pktap_v2_hdr_dst)->pth_uuid_offset = 0; \ + (pktap_v2_hdr_dst)->pth_e_uuid_offset = 0; \ + (pktap_v2_hdr_dst)->pth_ifname_offset = 0; \ + (pktap_v2_hdr_dst)->pth_comm_offset = 0; \ + (pktap_v2_hdr_dst)->pth_e_comm_offset = 0; \ + (pktap_v2_hdr_dst)->pth_dlt = (pktap_header_src)->pth_dlt; \ + (pktap_v2_hdr_dst)->pth_frame_pre_length = (pktap_header_src)->pth_frame_pre_length; \ + (pktap_v2_hdr_dst)->pth_frame_post_length = (pktap_header_src)->pth_frame_post_length; \ + (pktap_v2_hdr_dst)->pth_iftype = (pktap_header_src)->pth_iftype; \ + (pktap_v2_hdr_dst)->pth_ipproto = (pktap_header_src)->pth_ipproto; \ + (pktap_v2_hdr_dst)->pth_protocol_family = (pktap_header_src)->pth_protocol_family; \ + (pktap_v2_hdr_dst)->pth_svc = (pktap_header_src)->pth_svc; \ + (pktap_v2_hdr_dst)->pth_flowid = (pktap_header_src)->pth_flowid; \ + (pktap_v2_hdr_dst)->pth_pid = (pktap_header_src)->pth_pid; \ + (pktap_v2_hdr_dst)->pth_e_pid = (pktap_header_src)->pth_epid; \ + (pktap_v2_hdr_dst)->pth_flags = (pktap_header_src)->pth_flags; \ + (pktap_v2_hdr_dst)->pth_flags |= PTH_FLAG_V2_HDR; \ +} + +/* + * Values for field pth_flags + */ +#define PTH_FLAG_DIR_IN 0x00000001 /* Outgoing packet */ +#define PTH_FLAG_DIR_OUT 0x00000002 /* Incoming packet */ +#define PTH_FLAG_PROC_DELEGATED 0x00000004 /* Process delegated */ +#define PTH_FLAG_IF_DELEGATED 0x00000008 /* Interface delegated */ #ifdef BSD_KERNEL_PRIVATE -#define PTH_FLAG_DELAY_PKTAP 0x1000 /* Finalize pktap header on read */ +#define PTH_FLAG_DELAY_PKTAP 0x00001000 /* Finalize pktap header on read */ #endif /* BSD_KERNEL_PRIVATE */ -#define PTH_FLAG_TSTAMP 0x2000 /* Has time stamp */ -#define PTH_FLAG_NEW_FLOW 0x4000 /* Packet from a new flow */ -#define PTH_FLAG_MSFSW 0x8000 /* Multi stack flow switch */ +#define PTH_FLAG_TSTAMP 0x00002000 /* Has time stamp */ +#define PTH_FLAG_NEW_FLOW 0x00004000 /* Packet from a new flow */ +#define PTH_FLAG_REXMIT 0x00008000 /* Packet is a retransmission */ +#define PTH_FLAG_KEEP_ALIVE 0x00010000 /* Is keep alive packet */ +#define PTH_FLAG_SOCKET 0x00020000 /* Packet on a Socket */ +#define PTH_FLAG_NEXUS_CHAN 0x00040000 /* Packet on a nexus channel */ +#define PTH_FLAG_V2_HDR 0x00080000 /* Version 2 of pktap */ #ifdef BSD_KERNEL_PRIVATE + +#include + +struct pktap_header_buffer { + struct pktap_header pkth; + union pktap_header_extra extra; +} ; + extern uint32_t pktap_total_tap_count; extern void pktap_init(void); @@ -149,7 +240,8 @@ extern void pktap_output(struct ifnet *, protocol_family_t, struct mbuf *, extern void pktap_fill_proc_info(struct pktap_header *, protocol_family_t , struct mbuf *, u_int32_t , int , struct ifnet *); extern void pktap_finalize_proc_info(struct pktap_header *); - +extern void pktap_v2_finalize_proc_info(struct pktap_v2_hdr *); +extern void convert_to_pktap_header_to_v2(struct bpf_packet *bpf_pkt, bool truncate); #endif /* BSD_KERNEL_PRIVATE */ #endif /* PRIVATE */