skbuff_optptr 255 include/net/netlabel.h unsigned char *(*skbuff_optptr)(const struct sk_buff *skb); skbuff_optptr 1433 net/ipv6/calipso.c .skbuff_optptr = calipso_skbuff_optptr, skbuff_optptr 627 net/netlabel/netlabel_calipso.c ret_val = ops->skbuff_optptr(skb);