Martin KaFai Lau 8904d8848b bpf: Add BPF_FIB_LOOKUP_SKIP_NEIGH for bpf_fib_lookup ... [ Upstream commit 31de4105f00d64570139bc5494a201b0bd57349f ] The bpf_fib_lookup() also looks up the neigh table. This was done before bpf_redirect_neigh() was added. In the use case that does not manage the neigh table and requires bpf_fib_lookup() to lookup a fib to decide if it needs to redirect or not, the bpf prog can depend only on using bpf_redirect_neigh() to lookup the neigh. It also keeps the neigh entries fresh and connected. This patch adds a bpf_fib_lookup flag, SKIP_NEIGH, to avoid the double neigh lookup when the bpf prog always call bpf_redirect_neigh() to do the neigh lookup. The params->smac output is skipped together when SKIP_NEIGH is set because bpf_redirect_neigh() will figure out the smac also. Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20230217205515.3583372-1-martin.lau@linux.dev Stable-dep-of: 5baa0433a15e ("neighbour: fix data-races around n->output") Signed-off-by: Sasha Levin <sashal@kernel.org>		2023-10-10 22:00:42 +02:00
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tc_act
bpf.h	bpf: Add BPF_FIB_LOOKUP_SKIP_NEIGH for bpf_fib_lookup	2023-10-10 22:00:42 +02:00
bpf_common.h
bpf_perf_event.h
btf.h
const.h
erspan.h
ethtool.h
fadvise.h
fcntl.h
filter.h
fs.h
fscrypt.h
hw_breakpoint.h
if_link.h
if_tun.h
if_xdp.h
in.h
kcmp.h
kvm.h
mman.h
mount.h
netlink.h
openat2.h
perf_event.h
pkt_cls.h
pkt_sched.h
prctl.h
sched.h
seg6.h
seg6_local.h
stat.h
stddef.h
tcp.h
tls.h
types.h
usbdevice_fs.h
vhost.h