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| author | Toke Høiland-Jørgensen <[email protected]> | 2020-10-20 21:25:56 +0000 |
|---|---|---|
| committer | Daniel Borkmann <[email protected]> | 2020-10-21 23:28:54 +0000 |
| commit | ba452c9e996d8a4c347b32805f91abb70de5de7e (patch) | |
| tree | 7cc639674290dda9b607ed44dc572b30f55502a7 /tools/lib/bpf/bpf_helpers.h | |
| parent | bpf, doc: Fix patchwork URL to point to kernel.org instance (diff) | |
| download | kernel-ba452c9e996d8a4c347b32805f91abb70de5de7e.tar.gz kernel-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/[email protected]/
Signed-off-by: Toke Høiland-Jørgensen <[email protected]>
Signed-off-by: Daniel Borkmann <[email protected]>
Reviewed-by: David Ahern <[email protected]>
Link: https://lore.kernel.org/bpf/[email protected]
Diffstat (limited to 'tools/lib/bpf/bpf_helpers.h')
0 files changed, 0 insertions, 0 deletions