samples/bpf/test_lwt_bpf.c

18 # define printk(fmt, ...)						\
39 	printk("len %d hash %d protocol %d", skb->len, skb->hash,
41 	printk("cb %d ingress_ifindex %d ifindex %d", skb->cb[0],
51 	printk("cb0: %x cb1: %x cb2: %x", skb->cb[0], skb->cb[1],
53 	printk("cb3: %x cb4: %x", skb->cb[3], skb->cb[4]);
67 		printk("packet truncated");
71 	printk("src: %x dst: %x", iph->saddr, iph->daddr);
92 		printk("bpf_l4_csum_replace failed: %d", ret);
115 			printk("bpf_l4_csum_replace failed: %d");
122 		printk("bpf_l3_csum_replace failed: %d", ret);
132 		printk("bpf_skb_store_bytes() failed: %d", ret);
148 		printk("bpf_skb_load_bytes failed: %d", ret);
153 		printk("out: rewriting from %x to %x", old_ip, new_ip);
168 		printk("skb_change_head() failed: %d", ret);
177 		printk("skb_store_bytes() failed: %d", ret);
197 		printk("redirected to %d", ifindex);
224 	printk("Set initial 96 bytes of header to FF");
233 	printk("redirected to %d", ifindex);
241 	printk("dropping with: %d", BPF_DROP);