Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) #include <uapi/linux/bpf.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) #include <uapi/linux/in.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3) #include <uapi/linux/if.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4) #include <uapi/linux/if_ether.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5) #include <uapi/linux/ip.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6) #include <uapi/linux/ipv6.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7) #include <uapi/linux/if_tunnel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) #include <bpf/bpf_helpers.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) #include "bpf_legacy.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #define IP_MF		0x2000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #define IP_OFFSET	0x1FFF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) struct vlan_hdr {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) 	__be16 h_vlan_TCI;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) 	__be16 h_vlan_encapsulated_proto;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) struct flow_key_record {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) 	__be32 src;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) 	__be32 dst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) 	union {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) 		__be32 ports;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) 		__be16 port16[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 	};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) 	__u16 thoff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) 	__u8 ip_proto;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) static inline int proto_ports_offset(__u64 proto)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 	switch (proto) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 	case IPPROTO_TCP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 	case IPPROTO_UDP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 	case IPPROTO_DCCP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 	case IPPROTO_ESP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 	case IPPROTO_SCTP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 	case IPPROTO_UDPLITE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 	case IPPROTO_AH:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 		return 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) static inline int ip_is_fragment(struct __sk_buff *ctx, __u64 nhoff)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 	return load_half(ctx, nhoff + offsetof(struct iphdr, frag_off))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 		& (IP_MF | IP_OFFSET);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) static inline __u32 ipv6_addr_hash(struct __sk_buff *ctx, __u64 off)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 	__u64 w0 = load_word(ctx, off);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 	__u64 w1 = load_word(ctx, off + 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 	__u64 w2 = load_word(ctx, off + 8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 	__u64 w3 = load_word(ctx, off + 12);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 	return (__u32)(w0 ^ w1 ^ w2 ^ w3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) static inline __u64 parse_ip(struct __sk_buff *skb, __u64 nhoff, __u64 *ip_proto,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 			     struct flow_key_record *flow)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 	__u64 verlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 	if (unlikely(ip_is_fragment(skb, nhoff)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 		*ip_proto = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 		*ip_proto = load_byte(skb, nhoff + offsetof(struct iphdr, protocol));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 	if (*ip_proto != IPPROTO_GRE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 		flow->src = load_word(skb, nhoff + offsetof(struct iphdr, saddr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 		flow->dst = load_word(skb, nhoff + offsetof(struct iphdr, daddr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 	verlen = load_byte(skb, nhoff + 0/*offsetof(struct iphdr, ihl)*/);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 	if (likely(verlen == 0x45))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 		nhoff += 20;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 		nhoff += (verlen & 0xF) << 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 	return nhoff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) static inline __u64 parse_ipv6(struct __sk_buff *skb, __u64 nhoff, __u64 *ip_proto,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 			       struct flow_key_record *flow)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 	*ip_proto = load_byte(skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 			      nhoff + offsetof(struct ipv6hdr, nexthdr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 	flow->src = ipv6_addr_hash(skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 				   nhoff + offsetof(struct ipv6hdr, saddr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 	flow->dst = ipv6_addr_hash(skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 				   nhoff + offsetof(struct ipv6hdr, daddr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 	nhoff += sizeof(struct ipv6hdr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 	return nhoff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) static inline bool flow_dissector(struct __sk_buff *skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 				  struct flow_key_record *flow)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 	__u64 nhoff = ETH_HLEN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 	__u64 ip_proto;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 	__u64 proto = load_half(skb, 12);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 	int poff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 	if (proto == ETH_P_8021AD) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 		proto = load_half(skb, nhoff + offsetof(struct vlan_hdr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 							h_vlan_encapsulated_proto));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 		nhoff += sizeof(struct vlan_hdr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 	if (proto == ETH_P_8021Q) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 		proto = load_half(skb, nhoff + offsetof(struct vlan_hdr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 							h_vlan_encapsulated_proto));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 		nhoff += sizeof(struct vlan_hdr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 	if (likely(proto == ETH_P_IP))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 		nhoff = parse_ip(skb, nhoff, &ip_proto, flow);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 	else if (proto == ETH_P_IPV6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 		nhoff = parse_ipv6(skb, nhoff, &ip_proto, flow);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 		return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 	switch (ip_proto) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 	case IPPROTO_GRE: {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 		struct gre_hdr {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 			__be16 flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 			__be16 proto;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 		};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 		__u64 gre_flags = load_half(skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 					    nhoff + offsetof(struct gre_hdr, flags));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 		__u64 gre_proto = load_half(skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 					    nhoff + offsetof(struct gre_hdr, proto));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 		if (gre_flags & (GRE_VERSION|GRE_ROUTING))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 		proto = gre_proto;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 		nhoff += 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 		if (gre_flags & GRE_CSUM)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 			nhoff += 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 		if (gre_flags & GRE_KEY)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 			nhoff += 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 		if (gre_flags & GRE_SEQ)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 			nhoff += 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 		if (proto == ETH_P_8021Q) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 			proto = load_half(skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 					  nhoff + offsetof(struct vlan_hdr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 							   h_vlan_encapsulated_proto));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 			nhoff += sizeof(struct vlan_hdr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 		if (proto == ETH_P_IP)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 			nhoff = parse_ip(skb, nhoff, &ip_proto, flow);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 		else if (proto == ETH_P_IPV6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 			nhoff = parse_ipv6(skb, nhoff, &ip_proto, flow);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 		else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 			return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 	case IPPROTO_IPIP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 		nhoff = parse_ip(skb, nhoff, &ip_proto, flow);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 	case IPPROTO_IPV6:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 		nhoff = parse_ipv6(skb, nhoff, &ip_proto, flow);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 	flow->ip_proto = ip_proto;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 	poff = proto_ports_offset(ip_proto);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 	if (poff >= 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 		nhoff += poff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 		flow->ports = load_word(skb, nhoff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 	flow->thoff = (__u16) nhoff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 	return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) struct pair {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 	long packets;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 	long bytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 	__uint(type, BPF_MAP_TYPE_HASH);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 	__type(key, __be32);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 	__type(value, struct pair);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 	__uint(max_entries, 1024);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) } hash_map SEC(".maps");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) SEC("socket2")
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) int bpf_prog2(struct __sk_buff *skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 	struct flow_key_record flow = {};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 	struct pair *value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 	u32 key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 	if (!flow_dissector(skb, &flow))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 	key = flow.dst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 	value = bpf_map_lookup_elem(&hash_map, &key);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 	if (value) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 		__sync_fetch_and_add(&value->packets, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 		__sync_fetch_and_add(&value->bytes, skb->len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 	} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 		struct pair val = {1, skb->len};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 		bpf_map_update_elem(&hash_map, &key, &val, BPF_ANY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) char _license[] SEC("license") = "GPL";