On 7/7/25 9:17 AM, Saket Kumar Bhaskar wrote:
BPF selftest fails to build with below error:
CLNG-BPF [test_progs] lsm_cgroup.bpf.o progs/lsm_cgroup.c:105:21: error: variable has incomplete type 'struct sockaddr_ll' 105 | struct sockaddr_ll sa = {}; | ^ progs/lsm_cgroup.c:105:9: note: forward declaration of 'struct sockaddr_ll' 105 | struct sockaddr_ll sa = {}; | ^ 1 error generated.
lsm_cgroup selftest requires sockaddr_ll structure which is not there in vmlinux.h when the kernel is built with CONFIG_PACKET=m.
Enabling CONFIG_PACKET=y ensures that sockaddr_ll is available in vmlinux, allowing it to be captured in the generated vmlinux.h for bpf selftests.
Reported-by: Sachin P Bappalige sachinpb@linux.ibm.com Signed-off-by: Saket Kumar Bhaskar skb99@linux.ibm.com
Acked-by: Daniel Borkmann daniel@iogearbox.net