On Tue, Sep 18, 2018 at 1:20 PM Willem de Bruijn <[email protected]> wrote: > > From: Willem de Bruijn <[email protected]> > > If boolean CONFIG_BPF_SYSCALL is enabled, kernel/bpf/syscall.c will > call flow_dissector functions from net/core/flow_dissector.c. > > This causes this build failure if CONFIG_NET is disabled: > > kernel/bpf/syscall.o: In function `__x64_sys_bpf': > syscall.c:(.text+0x3278): undefined reference to > `skb_flow_dissector_bpf_prog_attach' > syscall.c:(.text+0x3310): undefined reference to > `skb_flow_dissector_bpf_prog_detach' > kernel/bpf/syscall.o:(.rodata+0x3f0): undefined reference to > `flow_dissector_prog_ops' > kernel/bpf/verifier.o:(.rodata+0x250): undefined reference to > `flow_dissector_verifier_ops' > > Analogous to other optional BPF program types in syscall.c, add stubs > if the relevant functions are not compiled and move the BPF_PROG_TYPE > definition in the #ifdef CONFIG_NET block. > > Fixes: d58e468b1112 ("flow_dissector: implements flow dissector BPF hook") > Reported-by: Randy Dunlap <[email protected]> > Signed-off-by: Willem de Bruijn <[email protected]>
Acked-by: Yonghong Song <[email protected]>
