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authorToke Høiland-Jørgensen <toke@redhat.com>2020-10-21 00:25:56 +0300
committerDaniel Borkmann <daniel@iogearbox.net>2020-10-22 02:28:54 +0300
commitba452c9e996d8a4c347b32805f91abb70de5de7e (patch)
tree7cc639674290dda9b607ed44dc572b30f55502a7 /scripts
parentc5eb48e89286510d638844104a6f6582a4838a32 (diff)
downloadlinux-ba452c9e996d8a4c347b32805f91abb70de5de7e.tar.xz
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-xscripts/bpf_helpers_doc.py1
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',