108 static inline __always_inline int do_forward6(struct __sk_buff* skb, const bool is_ethernet,
114     if (is_ethernet && (skb->pkt_type != PACKET_HOST)) return TC_ACT_OK;
116     const int l2_header_size = is_ethernet ? sizeof(struct ethhdr) : 0;
126     struct ethhdr* eth = is_ethernet ? data : NULL;  // used iff is_ethernet
127     struct ipv6hdr* ip6 = is_ethernet ? (void*)(eth + 1) : data;
133     if (is_ethernet && (eth->h_proto != htons(ETH_P_IPV6))) return TC_ACT_OK;
179     if (is_ethernet) __builtin_memcpy(downstream ? kd.dstMac : ku.dstMac, eth->h_dest, ETH_ALEN);
227     if (!is_ethernet) {
355 static inline __always_inline int do_forward4(struct __sk_buff* skb, const bool is_ethernet,  in do_forward4()  argument
358     if (is_ethernet && (skb->pkt_type != PACKET_HOST)) return TC_ACT_OK;  in do_forward4()
363     const int l2_header_size = is_ethernet ? sizeof(struct ethhdr) : 0;  in do_forward4()
373     struct ethhdr* eth = is_ethernet ? data : NULL;  // used iff is_ethernet  in do_forward4()
374     struct iphdr* ip = is_ethernet ? (void*)(eth + 1) : data;  in do_forward4()
380     if (is_ethernet && (eth->h_proto != htons(ETH_P_IP))) return TC_ACT_OK;  in do_forward4()
492     if (is_ethernet) __builtin_memcpy(k.dstMac, eth->h_dest, ETH_ALEN);  in do_forward4()
540     if (!is_ethernet) {  in do_forward4()
779 static inline __always_inline int do_xdp_forward6(struct xdp_md *ctx, const bool is_ethernet,  in do_xdp_forward6()  argument
784 static inline __always_inline int do_xdp_forward4(struct xdp_md *ctx, const bool is_ethernet,  in do_xdp_forward4()  argument