Enum DropReason

Source

#[repr(u32)]pub enum DropReason {
Show 64 variants    NetUnreachable = 0,
    HostUnreachable = 1,
    ProtocolUnreachable = 2,
    PortUnreachable = 3,
    FragNeeded = 4,
    SrcRouteFailed = 5,
    DstNetUnknown = 6,
    DstHostUnknown = 7,
    SrcHostIsolated = 8,
    DstNetProhibited = 9,
    DstHostProhibited = 10,
    DstNetTosUnreachable = 11,
    DstHostTosUnreachable = 12,
    CommAdminProhibited = 13,
    HostPrecedenceViolation = 14,
    PrecedenceCutoff = 15,
    Unknown = 256,
    TtlExceeded = 257,
    Acl = 258,
    NoBufferSpace = 259,
    Red = 260,
    TrafficShaping = 261,
    PktTooBig = 262,
    SrcMacIsMulticast = 263,
    VlanTagMismatch = 264,
    IngressVlanFilter = 265,
    IngressSpanningTreeFilter = 266,
    PortListIsEmpty = 267,
    PortLoopbackFilter = 268,
    BlackholeRoute = 269,
    NonIp = 270,
    UcDipOverMcDmac = 271,
    DipIsLoopbackAddress = 272,
    SipIsMc = 273,
    SipIsLoopbackAddress = 274,
    IpHeaderCorrupted = 275,
    Ipv4SipIsLimitedBc = 276,
    Ipv6McDipReservedScope = 277,
    Ipv6McDipInterfaceLocalScope = 278,
    UnresolvedNeigh = 279,
    McReversePathForwarding = 280,
    NonRoutablePacket = 281,
    DecapError = 282,
    OverlaySmacIsMc = 283,
    UnknownL2 = 284,
    UnknownL3 = 285,
    UnknownL3Exception = 286,
    UnknownBuffer = 287,
    UnknownTunnel = 288,
    UnknownL4 = 289,
    SipIsUnspecified = 290,
    MlagPortIsolation = 291,
    BlackholeArpNeigh = 292,
    SrcMacIsDmac = 293,
    DmacIsReserved = 294,
    SipIsClassE = 295,
    McDmacMismatch = 296,
    SipIsDip = 297,
    DipIsLocalNetwork = 298,
    DipIsLinkLocal = 299,
    OverlaySmacIsDmac = 300,
    EgressVlanFilter = 301,
    UcReversePathForwarding = 302,
    SplitHorizon = 303,
}

Expand description

Drop reason codes for discarded packets

§XDR Definition (sFlow Drops)

/* The drop_reason enumeration may be expanded over time.
   sFlow collectors must be prepared to receive discard_packet
   structures with unrecognized drop_reason values.

   This document expands on the discard reason codes 0-262 defined
   in the sFlow Version 5 [1] interface typedef and this expanded list
   should be regarded as an expansion of the reason codes in the
   interface typdef and are valid anywhere the typedef is referenced.

   Codes 263-288 are defined in Devlink Trap [2]. Drop reason / group
   names from the Devlink Trap document are preserved where they define
   new reason codes, or referenced as comments where they map to existing
   codes.

   Codes 289-303 are reasons that have yet to be upstreamed to Devlink Trap,
   but the intent is that they will eventually be upstreamed and documented as
   part of the Linux API [2], and so they have been reserved.

   The authoritative list of drop reasons will be maintained
   at sflow.org */

enum drop_reason {
   net_unreachable      = 0,
   host_unreachable     = 1,
   protocol_unreachable = 2,
   port_unreachable     = 3,
   frag_needed          = 4,
   src_route_failed     = 5,
   dst_net_unknown      = 6, /* ipv4_lpm_miss, ipv6_lpm_miss */
   dst_host_unknown     = 7,
   src_host_isolated    = 8,
   dst_net_prohibited   = 9, /* reject_route */
   dst_host_prohibited  = 10,
   dst_net_tos_unreachable  = 11,
   dst_host_tos_unreacheable = 12,
   comm_admin_prohibited = 13,
   host_precedence_violation = 14,
   precedence_cutoff    = 15,
   unknown              = 256,
   ttl_exceeded         = 257, /* ttl_value_is_too_small */
   acl                  = 258, /* ingress_flow_action_drop,
                                  egress_flow_action_drop
                                  group acl_drops */
   no_buffer_space      = 259, /* tail_drop */
   red                  = 260, /* early_drop */
   traffic_shaping      = 261,
   pkt_too_big          = 262, /* mtu_value_is_too_small */
   src_mac_is_multicast = 263,
   vlan_tag_mismatch    = 264,
   ingress_vlan_filter  = 265,
   ingress_spanning_tree_filter = 266,
   port_list_is_empty   = 267,
   port_loopback_filter = 268,
   blackhole_route      = 269,
   non_ip               = 270,
   uc_dip_over_mc_dmac  = 271,
   dip_is_loopback_address = 272,
   sip_is_mc            = 273,
   sip_is_loopback_address = 274,
   ip_header_corrupted  = 275,
   ipv4_sip_is_limited_bc = 276,
   ipv6_mc_dip_reserved_scope = 277,
   ipv6_mc_dip_interface_local_scope = 278,
   unresolved_neigh     = 279,
   mc_reverse_path_forwarding = 280,
   non_routable_packet  = 281,
   decap_error          = 282,
   overlay_smac_is_mc   = 283,
   unknown_l2           = 284, /* group l2_drops */
   unknown_l3           = 285, /* group l3_drops */
   unknown_l3_exception = 286, /* group l3_exceptions */
   unknown_buffer       = 287, /* group buffer_drops */
   unknown_tunnel       = 288, /* group tunnel_drops */
   unknown_l4           = 289,
   sip_is_unspecified   = 290,
   mlag_port_isolation  = 291,
   blackhole_arp_neigh  = 292,
   src_mac_is_dmac      = 293,
   dmac_is_reserved     = 294,
   sip_is_class_e       = 295,
   mc_dmac_mismatch     = 296,
   sip_is_dip           = 297,
   dip_is_local_network = 298,
   dip_is_link_local    = 299,
   overlay_smac_is_dmac = 300,
   egress_vlan_filter   = 301,
   uc_reverse_path_forwarding = 302,
   split_horizon        = 303
}

Variants§

§

SplitHorizon = 303

Implementations§

Source §

impl DropReason

Source

pub fn from_u32(value: u32) -> Option<Self>

Convert from u32 value to DropReason enum

This is a mechanical mapping of u32 values to enum variants defined in the sFlow specification. The function is tested with representative samples rather than exhaustively.