bpf_get_socket_uid 4199 net/core/filter.c BPF_CALL_1(bpf_get_socket_uid, struct sk_buff *, skb) bpf_get_socket_uid 4211 net/core/filter.c .func = bpf_get_socket_uid, bpf_get_socket_uid 317 tools/testing/selftests/bpf/bpf_helpers.h static unsigned int (*bpf_get_socket_uid)(void *ctx) =