selftests: bpf: centre kernel bpf objects under new subdir "progs"

At the moment, all kernel bpf objects are listed under BPF_OBJ_FILES.
Listing them manually sometimes causing patch conflict when people are
adding new testcases simultaneously.

It is better to centre all the related source files under a subdir
"progs", then auto-generate the object file list.

Suggested-by: Alexei Starovoitov <ast@kernel.org>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Jiong Wang <jiong.wang@netronome.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

1 files changed, 0 insertions, 473 deletions

diff --git a/tools/testing/selftests/bpf/test_l4lb.c b/tools/testing/selftests/bpf/test_l4lb.c
deleted file mode 100644
index 1e10c9590991..000000000000
--- a/tools/testing/selftests/bpf/test_l4lb.c
+++ /dev/null
@@ -1,473 +0,0 @@
-/* Copyright (c) 2017 Facebook
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- */
-#include <stddef.h>
-#include <stdbool.h>
-#include <string.h>
-#include <linux/pkt_cls.h>
-#include <linux/bpf.h>
-#include <linux/in.h>
-#include <linux/if_ether.h>
-#include <linux/ip.h>
-#include <linux/ipv6.h>
-#include <linux/icmp.h>
-#include <linux/icmpv6.h>
-#include <linux/tcp.h>
-#include <linux/udp.h>
-#include "bpf_helpers.h"
-#include "test_iptunnel_common.h"
-#include "bpf_endian.h"
-
-int _version SEC("version") = 1;
-
-static inline __u32 rol32(__u32 word, unsigned int shift)
-{
-	return (word << shift) | (word >> ((-shift) & 31));
-}
-
-/* copy paste of jhash from kernel sources to make sure llvm
- * can compile it into valid sequence of bpf instructions
- */
-#define __jhash_mix(a, b, c)			\
-{						\
-	a -= c;  a ^= rol32(c, 4);  c += b;	\
-	b -= a;  b ^= rol32(a, 6);  a += c;	\
-	c -= b;  c ^= rol32(b, 8);  b += a;	\
-	a -= c;  a ^= rol32(c, 16); c += b;	\
-	b -= a;  b ^= rol32(a, 19); a += c;	\
-	c -= b;  c ^= rol32(b, 4);  b += a;	\
-}
-
-#define __jhash_final(a, b, c)			\
-{						\
-	c ^= b; c -= rol32(b, 14);		\
-	a ^= c; a -= rol32(c, 11);		\
-	b ^= a; b -= rol32(a, 25);		\
-	c ^= b; c -= rol32(b, 16);		\
-	a ^= c; a -= rol32(c, 4);		\
-	b ^= a; b -= rol32(a, 14);		\
-	c ^= b; c -= rol32(b, 24);		\
-}
-
-#define JHASH_INITVAL		0xdeadbeef
-
-typedef unsigned int u32;
-
-static inline u32 jhash(const void *key, u32 length, u32 initval)
-{
-	u32 a, b, c;
-	const unsigned char *k = key;
-
-	a = b = c = JHASH_INITVAL + length + initval;
-
-	while (length > 12) {
-		a += *(u32 *)(k);
-		b += *(u32 *)(k + 4);
-		c += *(u32 *)(k + 8);
-		__jhash_mix(a, b, c);
-		length -= 12;
-		k += 12;
-	}
-	switch (length) {
-	case 12: c += (u32)k[11]<<24;
-	case 11: c += (u32)k[10]<<16;
-	case 10: c += (u32)k[9]<<8;
-	case 9:  c += k[8];
-	case 8:  b += (u32)k[7]<<24;
-	case 7:  b += (u32)k[6]<<16;
-	case 6:  b += (u32)k[5]<<8;
-	case 5:  b += k[4];
-	case 4:  a += (u32)k[3]<<24;
-	case 3:  a += (u32)k[2]<<16;
-	case 2:  a += (u32)k[1]<<8;
-	case 1:  a += k[0];
-		 __jhash_final(a, b, c);
-	case 0: /* Nothing left to add */
-		break;
-	}
-
-	return c;
-}
-
-static inline u32 __jhash_nwords(u32 a, u32 b, u32 c, u32 initval)
-{
-	a += initval;
-	b += initval;
-	c += initval;
-	__jhash_final(a, b, c);
-	return c;
-}
-
-static inline u32 jhash_2words(u32 a, u32 b, u32 initval)
-{
-	return __jhash_nwords(a, b, 0, initval + JHASH_INITVAL + (2 << 2));
-}
-
-#define PCKT_FRAGMENTED 65343
-#define IPV4_HDR_LEN_NO_OPT 20
-#define IPV4_PLUS_ICMP_HDR 28
-#define IPV6_PLUS_ICMP_HDR 48
-#define RING_SIZE 2
-#define MAX_VIPS 12
-#define MAX_REALS 5
-#define CTL_MAP_SIZE 16
-#define CH_RINGS_SIZE (MAX_VIPS * RING_SIZE)
-#define F_IPV6 (1 << 0)
-#define F_HASH_NO_SRC_PORT (1 << 0)
-#define F_ICMP (1 << 0)
-#define F_SYN_SET (1 << 1)
-
-struct packet_description {
-	union {
-		__be32 src;
-		__be32 srcv6[4];
-	};
-	union {
-		__be32 dst;
-		__be32 dstv6[4];
-	};
-	union {
-		__u32 ports;
-		__u16 port16[2];
-	};
-	__u8 proto;
-	__u8 flags;
-};
-
-struct ctl_value {
-	union {
-		__u64 value;
-		__u32 ifindex;
-		__u8 mac[6];
-	};
-};
-
-struct vip_meta {
-	__u32 flags;
-	__u32 vip_num;
-};
-
-struct real_definition {
-	union {
-		__be32 dst;
-		__be32 dstv6[4];
-	};
-	__u8 flags;
-};
-
-struct vip_stats {
-	__u64 bytes;
-	__u64 pkts;
-};
-
-struct eth_hdr {
-	unsigned char eth_dest[ETH_ALEN];
-	unsigned char eth_source[ETH_ALEN];
-	unsigned short eth_proto;
-};
-
-struct bpf_map_def SEC("maps") vip_map = {
-	.type = BPF_MAP_TYPE_HASH,
-	.key_size = sizeof(struct vip),
-	.value_size = sizeof(struct vip_meta),
-	.max_entries = MAX_VIPS,
-};
-
-struct bpf_map_def SEC("maps") ch_rings = {
-	.type = BPF_MAP_TYPE_ARRAY,
-	.key_size = sizeof(__u32),
-	.value_size = sizeof(__u32),
-	.max_entries = CH_RINGS_SIZE,
-};
-
-struct bpf_map_def SEC("maps") reals = {
-	.type = BPF_MAP_TYPE_ARRAY,
-	.key_size = sizeof(__u32),
-	.value_size = sizeof(struct real_definition),
-	.max_entries = MAX_REALS,
-};
-
-struct bpf_map_def SEC("maps") stats = {
-	.type = BPF_MAP_TYPE_PERCPU_ARRAY,
-	.key_size = sizeof(__u32),
-	.value_size = sizeof(struct vip_stats),
-	.max_entries = MAX_VIPS,
-};
-
-struct bpf_map_def SEC("maps") ctl_array = {
-	.type = BPF_MAP_TYPE_ARRAY,
-	.key_size = sizeof(__u32),
-	.value_size = sizeof(struct ctl_value),
-	.max_entries = CTL_MAP_SIZE,
-};
-
-static __always_inline __u32 get_packet_hash(struct packet_description *pckt,
-					     bool ipv6)
-{
-	if (ipv6)
-		return jhash_2words(jhash(pckt->srcv6, 16, MAX_VIPS),
-				    pckt->ports, CH_RINGS_SIZE);
-	else
-		return jhash_2words(pckt->src, pckt->ports, CH_RINGS_SIZE);
-}
-
-static __always_inline bool get_packet_dst(struct real_definition **real,
-					   struct packet_description *pckt,
-					   struct vip_meta *vip_info,
-					   bool is_ipv6)
-{
-	__u32 hash = get_packet_hash(pckt, is_ipv6) % RING_SIZE;
-	__u32 key = RING_SIZE * vip_info->vip_num + hash;
-	__u32 *real_pos;
-
-	real_pos = bpf_map_lookup_elem(&ch_rings, &key);
-	if (!real_pos)
-		return false;
-	key = *real_pos;
-	*real = bpf_map_lookup_elem(&reals, &key);
-	if (!(*real))
-		return false;
-	return true;
-}
-
-static __always_inline int parse_icmpv6(void *data, void *data_end, __u64 off,
-					struct packet_description *pckt)
-{
-	struct icmp6hdr *icmp_hdr;
-	struct ipv6hdr *ip6h;
-
-	icmp_hdr = data + off;
-	if (icmp_hdr + 1 > data_end)
-		return TC_ACT_SHOT;
-	if (icmp_hdr->icmp6_type != ICMPV6_PKT_TOOBIG)
-		return TC_ACT_OK;
-	off += sizeof(struct icmp6hdr);
-	ip6h = data + off;
-	if (ip6h + 1 > data_end)
-		return TC_ACT_SHOT;
-	pckt->proto = ip6h->nexthdr;
-	pckt->flags |= F_ICMP;
-	memcpy(pckt->srcv6, ip6h->daddr.s6_addr32, 16);
-	memcpy(pckt->dstv6, ip6h->saddr.s6_addr32, 16);
-	return TC_ACT_UNSPEC;
-}
-
-static __always_inline int parse_icmp(void *data, void *data_end, __u64 off,
-				      struct packet_description *pckt)
-{
-	struct icmphdr *icmp_hdr;
-	struct iphdr *iph;
-
-	icmp_hdr = data + off;
-	if (icmp_hdr + 1 > data_end)
-		return TC_ACT_SHOT;
-	if (icmp_hdr->type != ICMP_DEST_UNREACH ||
-	    icmp_hdr->code != ICMP_FRAG_NEEDED)
-		return TC_ACT_OK;
-	off += sizeof(struct icmphdr);
-	iph = data + off;
-	if (iph + 1 > data_end)
-		return TC_ACT_SHOT;
-	if (iph->ihl != 5)
-		return TC_ACT_SHOT;
-	pckt->proto = iph->protocol;
-	pckt->flags |= F_ICMP;
-	pckt->src = iph->daddr;
-	pckt->dst = iph->saddr;
-	return TC_ACT_UNSPEC;
-}
-
-static __always_inline bool parse_udp(void *data, __u64 off, void *data_end,
-				      struct packet_description *pckt)
-{
-	struct udphdr *udp;
-	udp = data + off;
-
-	if (udp + 1 > data_end)
-		return false;
-
-	if (!(pckt->flags & F_ICMP)) {
-		pckt->port16[0] = udp->source;
-		pckt->port16[1] = udp->dest;
-	} else {
-		pckt->port16[0] = udp->dest;
-		pckt->port16[1] = udp->source;
-	}
-	return true;
-}
-
-static __always_inline bool parse_tcp(void *data, __u64 off, void *data_end,
-				      struct packet_description *pckt)
-{
-	struct tcphdr *tcp;
-
-	tcp = data + off;
-	if (tcp + 1 > data_end)
-		return false;
-
-	if (tcp->syn)
-		pckt->flags |= F_SYN_SET;
-
-	if (!(pckt->flags & F_ICMP)) {
-		pckt->port16[0] = tcp->source;
-		pckt->port16[1] = tcp->dest;
-	} else {
-		pckt->port16[0] = tcp->dest;
-		pckt->port16[1] = tcp->source;
-	}
-	return true;
-}
-
-static __always_inline int process_packet(void *data, __u64 off, void *data_end,
-					  bool is_ipv6, struct __sk_buff *skb)
-{
-	void *pkt_start = (void *)(long)skb->data;
-	struct packet_description pckt = {};
-	struct eth_hdr *eth = pkt_start;
-	struct bpf_tunnel_key tkey = {};
-	struct vip_stats *data_stats;
-	struct real_definition *dst;
-	struct vip_meta *vip_info;
-	struct ctl_value *cval;
-	__u32 v4_intf_pos = 1;
-	__u32 v6_intf_pos = 2;
-	struct ipv6hdr *ip6h;
-	struct vip vip = {};
-	struct iphdr *iph;
-	int tun_flag = 0;
-	__u16 pkt_bytes;
-	__u64 iph_len;
-	__u32 ifindex;
-	__u8 protocol;
-	__u32 vip_num;
-	int action;
-
-	tkey.tunnel_ttl = 64;
-	if (is_ipv6) {
-		ip6h = data + off;
-		if (ip6h + 1 > data_end)
-			return TC_ACT_SHOT;
-
-		iph_len = sizeof(struct ipv6hdr);
-		protocol = ip6h->nexthdr;
-		pckt.proto = protocol;
-		pkt_bytes = bpf_ntohs(ip6h->payload_len);
-		off += iph_len;
-		if (protocol == IPPROTO_FRAGMENT) {
-			return TC_ACT_SHOT;
-		} else if (protocol == IPPROTO_ICMPV6) {
-			action = parse_icmpv6(data, data_end, off, &pckt);
-			if (action >= 0)
-				return action;
-			off += IPV6_PLUS_ICMP_HDR;
-		} else {
-			memcpy(pckt.srcv6, ip6h->saddr.s6_addr32, 16);
-			memcpy(pckt.dstv6, ip6h->daddr.s6_addr32, 16);
-		}
-	} else {
-		iph = data + off;
-		if (iph + 1 > data_end)
-			return TC_ACT_SHOT;
-		if (iph->ihl != 5)
-			return TC_ACT_SHOT;
-
-		protocol = iph->protocol;
-		pckt.proto = protocol;
-		pkt_bytes = bpf_ntohs(iph->tot_len);
-		off += IPV4_HDR_LEN_NO_OPT;
-
-		if (iph->frag_off & PCKT_FRAGMENTED)
-			return TC_ACT_SHOT;
-		if (protocol == IPPROTO_ICMP) {
-			action = parse_icmp(data, data_end, off, &pckt);
-			if (action >= 0)
-				return action;
-			off += IPV4_PLUS_ICMP_HDR;
-		} else {
-			pckt.src = iph->saddr;
-			pckt.dst = iph->daddr;
-		}
-	}
-	protocol = pckt.proto;
-
-	if (protocol == IPPROTO_TCP) {
-		if (!parse_tcp(data, off, data_end, &pckt))
-			return TC_ACT_SHOT;
-	} else if (protocol == IPPROTO_UDP) {
-		if (!parse_udp(data, off, data_end, &pckt))
-			return TC_ACT_SHOT;
-	} else {
-		return TC_ACT_SHOT;
-	}
-
-	if (is_ipv6)
-		memcpy(vip.daddr.v6, pckt.dstv6, 16);
-	else
-		vip.daddr.v4 = pckt.dst;
-
-	vip.dport = pckt.port16[1];
-	vip.protocol = pckt.proto;
-	vip_info = bpf_map_lookup_elem(&vip_map, &vip);
-	if (!vip_info) {
-		vip.dport = 0;
-		vip_info = bpf_map_lookup_elem(&vip_map, &vip);
-		if (!vip_info)
-			return TC_ACT_SHOT;
-		pckt.port16[1] = 0;
-	}
-
-	if (vip_info->flags & F_HASH_NO_SRC_PORT)
-		pckt.port16[0] = 0;
-
-	if (!get_packet_dst(&dst, &pckt, vip_info, is_ipv6))
-		return TC_ACT_SHOT;
-
-	if (dst->flags & F_IPV6) {
-		cval = bpf_map_lookup_elem(&ctl_array, &v6_intf_pos);
-		if (!cval)
-			return TC_ACT_SHOT;
-		ifindex = cval->ifindex;
-		memcpy(tkey.remote_ipv6, dst->dstv6, 16);
-		tun_flag = BPF_F_TUNINFO_IPV6;
-	} else {
-		cval = bpf_map_lookup_elem(&ctl_array, &v4_intf_pos);
-		if (!cval)
-			return TC_ACT_SHOT;
-		ifindex = cval->ifindex;
-		tkey.remote_ipv4 = dst->dst;
-	}
-	vip_num = vip_info->vip_num;
-	data_stats = bpf_map_lookup_elem(&stats, &vip_num);
-	if (!data_stats)
-		return TC_ACT_SHOT;
-	data_stats->pkts++;
-	data_stats->bytes += pkt_bytes;
-	bpf_skb_set_tunnel_key(skb, &tkey, sizeof(tkey), tun_flag);
-	*(u32 *)eth->eth_dest = tkey.remote_ipv4;
-	return bpf_redirect(ifindex, 0);
-}
-
-SEC("l4lb-demo")
-int balancer_ingress(struct __sk_buff *ctx)
-{
-	void *data_end = (void *)(long)ctx->data_end;
-	void *data = (void *)(long)ctx->data;
-	struct eth_hdr *eth = data;
-	__u32 eth_proto;
-	__u32 nh_off;
-
-	nh_off = sizeof(struct eth_hdr);
-	if (data + nh_off > data_end)
-		return TC_ACT_SHOT;
-	eth_proto = eth->eth_proto;
-	if (eth_proto == bpf_htons(ETH_P_IP))
-		return process_packet(data, nh_off, data_end, false, ctx);
-	else if (eth_proto == bpf_htons(ETH_P_IPV6))
-		return process_packet(data, nh_off, data_end, true, ctx);
-	else
-		return TC_ACT_SHOT;
-}
-char _license[] SEC("license") = "GPL";