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| author | Toke Høiland-Jørgensen <toke@redhat.com> | 2020-10-20 23:25:56 +0200 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2020-10-22 01:28:54 +0200 |
| commit | ba452c9e996d8a4c347b32805f91abb70de5de7e (patch) | |
| tree | 7cc639674290dda9b607ed44dc572b30f55502a7 /scripts | |
| parent | c5eb48e89286510d638844104a6f6582a4838a32 (diff) | |
| download | linux-ba452c9e996d8a4c347b32805f91abb70de5de7e.tar.gz linux-ba452c9e996d8a4c347b32805f91abb70de5de7e.tar.bz2 linux-ba452c9e996d8a4c347b32805f91abb70de5de7e.zip | |
bpf: Fix bpf_redirect_neigh helper api to support supplying nexthop
Based on the discussion in [0], update the bpf_redirect_neigh() helper to
accept an optional parameter specifying the nexthop information. This makes
it possible to combine bpf_fib_lookup() and bpf_redirect_neigh() without
incurring a duplicate FIB lookup - since the FIB lookup helper will return
the nexthop information even if no neighbour is present, this can simply
be passed on to bpf_redirect_neigh() if bpf_fib_lookup() returns
BPF_FIB_LKUP_RET_NO_NEIGH. Thus fix & extend it before helper API is frozen.
[0] https://lore.kernel.org/bpf/393e17fc-d187-3a8d-2f0d-a627c7c63fca@iogearbox.net/
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://lore.kernel.org/bpf/160322915615.32199.1187570224032024535.stgit@toke.dk
Diffstat (limited to 'scripts')
| -rwxr-xr-x | scripts/bpf_helpers_doc.py | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/scripts/bpf_helpers_doc.py b/scripts/bpf_helpers_doc.py index 7d86fdd190be..6769caae142f 100755 --- a/scripts/bpf_helpers_doc.py +++ b/scripts/bpf_helpers_doc.py @@ -453,6 +453,7 @@ class PrinterHelpers(Printer): 'struct bpf_perf_event_data', 'struct bpf_perf_event_value', 'struct bpf_pidns_info', + 'struct bpf_redir_neigh', 'struct bpf_sk_lookup', 'struct bpf_sock', 'struct bpf_sock_addr', |