bpf_skb_change_head 3341 net/core/filter.c BPF_CALL_3(bpf_skb_change_head, struct sk_buff *, skb, u32, head_room, bpf_skb_change_head 3351 net/core/filter.c .func = bpf_skb_change_head, bpf_skb_change_head 5938 net/core/filter.c func == bpf_skb_change_head || bpf_skb_change_head 174 samples/bpf/test_lwt_bpf.c ret = bpf_skb_change_head(skb, 14, 0); bpf_skb_change_head 290 tools/testing/selftests/bpf/bpf_helpers.h static int (*bpf_skb_change_head)(void *, int len, int flags) =