uBPF

Quick Description

The Userspace eBPF is a virtual machine that enables safe execution of code within a controlled environment. All plugins are using a combination of the functions below.

Available functions

The following functions are used by the virtual machine.

• Specific API related
  • plugin_run_protoop
    • Execute protocol operations.
  • get_opaque_data
    • Retrieve a memory area shared by pluglets.
  • reserve_frames
    • Book the sending of QUIC frames
  • get_cnx
    • Get value in a context instance
  • set_cnx
    • Set value in a context instance
  • get_path
  • set_path
  • get_pkt_ctx
  • set_pkt_ctx
  • get_pkt
  • set_pkt
  • get_sack_item
  • set_sack_item
  • get_cnxid
  • set_cnxid
  • get_stream_head
  • set_stream_head
  • get_stream_data
  • get_crypto_context
  • set_crypto_context
  • get_ph
  • set_ph
  • cancel_head_reservation
• Specific to picoquic
  • picoquic_reinsert_cnx_by_wake_time
  • picoquic_current_time
• For memory
  • my_malloc
    • Provides the same functionality as malloc in c
  • my_free
    • Provides the same functionality as free in c
  • my_realloc
  • my_memcpy
  • my_memset
    • Provides the same functionality as memset in c
• For time
  • clock_gettime
• Network with Linux
  • getsockopt
  • setsockopt
  • socket
  • connect
  • send
  • inet_aton
  • socketpair
  • write
  • close
  • get_errno
  • my_htons
  • my_ntohs
  • strncmp
  • strlen
• Logging
  • picoquic_has_booked_plugin_frames
• Specific QUIC functions
  • picoquic_decode_frames_without_current_time
  • picoquic_varint_decode
  • picoquic_varint_encode
  • picoquic_create_random_cnx_id_for_cnx
  • picoquic_create_cnxid_reset_secret_for_cnx
  • picoquic_register_cnx_id_for_cnx
  • picoquic_create_path
  • picoquic_getaddrs
  • picoquic_compare_connection_id
  • picoquic_compare_addr
  • picoquic_parse_stream_header
  • picoquic_find_stream
  • picoquic_set_cnx_state
  • picoquic_frames_varint_decode
  • picoquic_record_pn_received
• Function with reserved value. Don't override it.
  • picoquic_memory_bound_error
• Other
  • queue_peek
  • picoquic_frame_fair_reserve
  • plugin_pluglet_exists
  • inet_ntop
  • strerror
  • memcmp
  • my_malloc_dbg
  • my_malloc_ex
  • my_free_dbg
  • dprintf
  • snprintf
  • lseek
  • ftruncate
  • strlen
  • snprintf_bytes
  • strncpy
  • inet_ntop
  • get_preq
  • set_preq
  • strcmp