bpf, net: Fix smc for CONFIG_BPF_JIT=n #6464
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If CONFIG_BPF_SYSCALL=y, but CONFIG_BPF_JIT=n:
net/smc/smc_hs_bpf.c: In function ‘bpf_smc_hs_ctrl_init’:
include/linux/bpf.h:2068:50: error: statement with no effect [-Werror=unused-value]
2068 | #define register_bpf_struct_ops(st_ops, type) ({ (void *)(st_ops); 0; })
| ^~~~~~~~~~~~~~~~
net/smc/smc_hs_bpf.c:139:16: note: in expansion of macro ‘register_bpf_struct_ops’
139 | return register_bpf_struct_ops(&bpf_smc_hs_ctrl_ops, smc_hs_ctrl);
| ^~~~~~~~~~~~~~~~~~~~~~~
As type is not a variable, but a variable type, this cannot be fixed by
just converting register_bpf_struct_ops() into a static inline function.
Hence fix this by introducing a static inline intermediate dummy.
Fixes: f6be98d ("bpf, net: switch to dynamic registration")
Signed-off-by: Geert Uytterhoeven <[email protected]>
If CONFIG_BPF_SYSCALL=y, but CONFIG_BPF_JIT=n:
net/smc/smc_hs_bpf.c: In function ‘bpf_smc_hs_ctrl_init’:
include/linux/bpf.h:2068:50: error: statement with no effect [-Werror=unused-value]
2068 | #define register_bpf_struct_ops(st_ops, type) ({ (void *)(st_ops); 0; })
| ^~~~~~~~~~~~~~~~
net/smc/smc_hs_bpf.c:139:16: note: in expansion of macro ‘register_bpf_struct_ops’
139 | return register_bpf_struct_ops(&bpf_smc_hs_ctrl_ops, smc_hs_ctrl);
| ^~~~~~~~~~~~~~~~~~~~~~~
While this compile error is caused by a bug in <linux/bpf.h>, none of
the code in net/smc/smc_hs_bpf.c becomes effective if CONFIG_BPF_JIT is
not enabled. Hence add a dependency on BPF_JIT.
While at it, add the missing newline at the end of the file.
Fixes: 15f295f ("net/smc: bpf: Introduce generic hook for handshake flow")
Signed-off-by: Geert Uytterhoeven <[email protected]>
Author
|
Upstream branch: 835a507 |
Author
|
At least one diff in series https://patchwork.kernel.org/project/netdevbpf/list/?series=1030431 irrelevant now. Closing PR. |
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Pull request for series with
subject: bpf, net: Fix smc for CONFIG_BPF_JIT=n
version: 1
url: https://patchwork.kernel.org/project/netdevbpf/list/?series=1030431