xnu-4903.221.2.tar.gz

[apple/xnu.git] / bsd / net / pktap.h

diff --git a/bsd/net/pktap.h b/bsd/net/pktap.h
index 74b0b5bd13bd26faf2dc30c5e23a871bbe6bccb0..25ed642fdd3a8532d97dfb540e658c473062a656 100644 (file)
--- a/bsd/net/pktap.h
+++ b/bsd/net/pktap.h
@@ -33,6 +33,7 @@
 #include <stdint.h>
 #include <net/if.h>
 #include <uuid/uuid.h>
 #include <stdint.h>
 #include <net/if.h>
 #include <uuid/uuid.h>

+#include <string.h>

 
 #ifdef PRIVATE
 
 
 #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_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
 #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 */
 #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
 
 #ifdef BSD_KERNEL_PRIVATE

+
+#include <net/bpf.h>
+
+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);
 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_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 */
 
 #endif /* BSD_KERNEL_PRIVATE */
 #endif /* PRIVATE */