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Fix: legacy map definition error #7

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Fix: legacy map definition error #7

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eab1a30
fix: resolve multiple definition of verbose and remove unused variabl…
TbYangZ Oct 10, 2025
03d5eeb
fix:legacy-map-definition-error
TbYangZ Oct 10, 2025
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2 changes: 1 addition & 1 deletion common/common_defines.h
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Original file line number Diff line number Diff line change
Expand Up @@ -94,7 +94,7 @@ struct ingressinfo {

#define PORT_AVAILABLE 1024

int verbose;
static int verbose = 0;

#define EXIT_OK 0 /* == EXIT_SUCCESS (stdlib.h) man exit(3) */
#define EXIT_FAIL 1 /* == EXIT_FAILURE (stdlib.h) man exit(3) */
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3 changes: 2 additions & 1 deletion tc_prog/common_kern.h
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Original file line number Diff line number Diff line change
Expand Up @@ -90,7 +90,7 @@ unsigned long long load_word(void *skb,
#define IS_SRC 1
#define IS_DST 2

static inline void set_ip_tos(struct __sk_buff *skb, unsigned int off, __u8 tos)
static inline int set_ip_tos(struct __sk_buff *skb, unsigned int off, __u8 tos)
{
__u8 old_tos = load_byte(skb, off + IP_TOS_OFF);
__u8 new_tos;
Expand All @@ -103,6 +103,7 @@ static inline void set_ip_tos(struct __sk_buff *skb, unsigned int off, __u8 tos)
skb, off + IP_CSUM_OFF, htons(old_tos), htons(new_tos), 2);
bpf_skb_store_bytes(
skb, off + IP_TOS_OFF, &new_tos, sizeof(new_tos), 0);
return TC_ACT_OK;
}

static inline void set_new_ip(
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78 changes: 40 additions & 38 deletions tc_prog/tc_prog_kern.c
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Original file line number Diff line number Diff line change
Expand Up @@ -5,49 +5,49 @@
#define PORT_MAX 65535
#define ENABLENP

struct bpf_elf_map SEC("maps") ingress_cache = {
.type = BPF_MAP_TYPE_LRU_HASH,
.size_key = sizeof(__be32),
.size_value = sizeof(struct ingressinfo),
.pinning = PIN_GLOBAL_NS,
.max_elem = 1024,
};
struct {
__uint(type, BPF_MAP_TYPE_LRU_HASH);
__uint(max_entries, 1024);
__type(key, __be32);
__type(value, struct ingressinfo);
__uint(pinning, LIBBPF_PIN_BY_NAME);
} ingress_cache SEC(".maps");

struct bpf_elf_map SEC("maps") egressip_cache = {
.type = BPF_MAP_TYPE_LRU_HASH,
.size_key = sizeof(__be32),
.size_value = sizeof(__be32),
.pinning = PIN_GLOBAL_NS,
.max_elem = 4096
};
struct {
__uint(type, BPF_MAP_TYPE_LRU_HASH);
__uint(max_entries, 4096);
__type(key, __be32);
__type(value, __be32);
__uint(pinning, LIBBPF_PIN_BY_NAME);
} egressip_cache SEC(".maps");

struct bpf_elf_map SEC("maps") egress_cache = {
.type = BPF_MAP_TYPE_LRU_HASH,
.size_key = sizeof(__be32),
.size_value = sizeof(struct egressinfo),
.pinning = PIN_GLOBAL_NS,
.max_elem = 1024,
};
struct {
__uint(type, BPF_MAP_TYPE_LRU_HASH);
__uint(max_entries, 1024);
__type(key, __be32);
__type(value, struct egressinfo);
__uint(pinning, LIBBPF_PIN_BY_NAME);
} egress_cache SEC(".maps");

struct bpf_elf_map SEC("maps") policy_cache = {
.type = BPF_MAP_TYPE_LRU_HASH,
.size_key = sizeof(struct fivetuple),
.size_value = sizeof(struct action),
.pinning = PIN_GLOBAL_NS,
.max_elem = 4096,
};
struct {
__uint(type, BPF_MAP_TYPE_LRU_HASH);
__uint(max_entries, 4096);
__type(key, struct fivetuple);
__type(value, struct action);
__uint(pinning, LIBBPF_PIN_BY_NAME);
} policy_cache SEC(".maps");

struct bpf_elf_map SEC("maps") devmap = {
.type = BPF_MAP_TYPE_LRU_HASH,
.size_key = sizeof(int),
.size_value = sizeof(struct devinfo),
.pinning = PIN_GLOBAL_NS,
.max_elem = 8,
};
struct {
__uint(type, BPF_MAP_TYPE_LRU_HASH);
__uint(max_entries, 8);
__type(key, int);
__type(value, struct devinfo);
__uint(pinning, LIBBPF_PIN_BY_NAME);
} devmap SEC(".maps");

SEC("tc_init_e")
int tc_init_e_func(struct __sk_buff *skb) {
int err;
// int err;
void *data = (void *)(long)skb->data;
void *data_end = (void *)(long)skb->data_end;
////////////////// Check if the packet is a VXLAN packet ////////////////////
Expand Down Expand Up @@ -95,12 +95,14 @@ int tc_init_e_func(struct __sk_buff *skb) {
// Make sure there is elem in the map
struct egressinfo tmpnodeegressinfo_;
initegressinfo(&tmpnodeegressinfo_, data, skb->ifindex);
err = bpf_map_update_elem(&egress_cache, &outer_iph->daddr, &tmpnodeegressinfo_, BPF_NOEXIST);
// err =
bpf_map_update_elem(&egress_cache, &outer_iph->daddr, &tmpnodeegressinfo_, BPF_NOEXIST);
// if(!err) {
// bpf_printkm("(tc_init_e)INFO: Updated an nodeegressinfo element");
// }

err = bpf_map_update_elem(&egressip_cache, &inner_iph->daddr, &outer_iph->daddr, BPF_NOEXIST);
// err =
bpf_map_update_elem(&egressip_cache, &inner_iph->daddr, &outer_iph->daddr, BPF_NOEXIST);
// if(!err) {
// bpf_printkm("(tc_init_e)INFO: Added an podip element. RemoteIP is %x", inner_iph->daddr);
// }
Expand Down