samples/bpf/xdp_fwd_kern.c

47 	struct bpf_fib_lookup fib_params;
59 	__builtin_memset(&fib_params, 0, sizeof(fib_params));
71 		fib_params.family	= AF_INET;
72 		fib_params.tos		= iph->tos;
73 		fib_params.l4_protocol	= iph->protocol;
74 		fib_params.sport	= 0;
75 		fib_params.dport	= 0;
76 		fib_params.tot_len	= ntohs(iph->tot_len);
77 		fib_params.ipv4_src	= iph->saddr;
78 		fib_params.ipv4_dst	= iph->daddr;
80 		struct in6_addr *src = (struct in6_addr *) fib_params.ipv6_src;
81 		struct in6_addr *dst = (struct in6_addr *) fib_params.ipv6_dst;
90 		fib_params.family	= AF_INET6;
91 		fib_params.flowinfo	= *(__be32 *)ip6h & IPV6_FLOWINFO_MASK;
92 		fib_params.l4_protocol	= ip6h->nexthdr;
93 		fib_params.sport	= 0;
94 		fib_params.dport	= 0;
95 		fib_params.tot_len	= ntohs(ip6h->payload_len);
102 	fib_params.ifindex = ctx->ingress_ifindex;
104 	rc = bpf_fib_lookup(ctx, &fib_params, sizeof(fib_params), flags);
130 		if (!bpf_map_lookup_elem(&xdp_tx_ports, &fib_params.ifindex))
138 		memcpy(eth->h_dest, fib_params.dmac, ETH_ALEN);
139 		memcpy(eth->h_source, fib_params.smac, ETH_ALEN);
140 		return bpf_redirect_map(&xdp_tx_ports, fib_params.ifindex, 0);