C flow dissector supports input flags that tell it to customize parsing by either stopping early or trying to parse as deep as possible. Pass those flags to the BPF flow dissector so it can make the same decisions. In the next commits I'll add support for those flags to our reference bpf_flow.c v3: * Export copy of flow dissector flags instead of moving (Alexei Starovoitov)
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| @@ -3507,6 +3507,10 @@ enum bpf_task_fd_type { · 3506 unmodified lines | |||
| 3507 | BPF_FD_TYPE_URETPROBE, /* filename + offset */ | 3507 | BPF_FD_TYPE_URETPROBE, /* filename + offset */ |
| 3508 | }; | 3508 | }; |
| 3509 | 3509 | ||
| 3510 | #define BPF_FLOW_DISSECTOR_F_PARSE_1ST_FRAG (1U << 0) | ||
| 3511 | #define BPF_FLOW_DISSECTOR_F_STOP_AT_FLOW_LABEL (1U << 1) | ||
| 3512 | #define BPF_FLOW_DISSECTOR_F_STOP_AT_ENCAP (1U << 2) | ||
| 3513 | |||
| 3510 | struct bpf_flow_keys { | 3514 | struct bpf_flow_keys { |
| 3511 | __u16 nhoff; | 3515 | __u16 nhoff; |
| 3512 | __u16 thoff; | 3516 | __u16 thoff; |
| @@ -3528,6 +3532,7 @@ struct bpf_flow_keys { · 15 unmodified lines | |||
| 3528 | __u32 ipv6_dst[4]; /* in6_addr; network order */ | 3532 | __u32 ipv6_dst[4]; /* in6_addr; network order */ |
| 3529 | }; | 3533 | }; |
| 3530 | }; | 3534 | }; |
| 3535 | __u32 flags; | ||
| 3531 | }; | 3536 | }; |
| 3532 | 3537 | ||
| 3533 | struct bpf_func_info { | 3538 | struct bpf_func_info { |