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samples: bpf: update map definition to new syntax BTF-defined map 

Since, the new syntax of BTF-defined map has been introduced,
the syntax for using maps under samples directory are mixed up.
For example, some are already using the new syntax, and some are using
existing syntax by calling them as 'legacy'.

As stated at commit abd29c9314 ("libbpf: allow specifying map
definitions using BTF"), the BTF-defined map has more compatablility
with extending supported map definition features.

The commit doesn't replace all of the map to new BTF-defined map,
because some of the samples still use bpf_load instead of libbpf, which
can't properly create BTF-defined map.

This will only updates the samples which uses libbpf API for loading bpf
program. (ex. bpf_prog_load_xattr)

Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Daniel T. Lee 2019-11-07 09:51:53 +09:00 committed by Alexei Starovoitov
parent afbe3c27d9
commit 451d1dc886
12 changed files with 176 additions and 176 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
samples/bpf/sockex1_kern.c
View File

@ -5,12 +5,12 @@
#include "bpf_helpers.h"
#include "bpf_legacy.h"
struct bpf_map_def SEC("maps") my_map = {
.type = BPF_MAP_TYPE_ARRAY,
.key_size = sizeof(u32),
.value_size = sizeof(long),
.max_entries = 256,
};
struct {
__uint(type, BPF_MAP_TYPE_ARRAY);
__type(key, u32);
__type(value, long);
__uint(max_entries, 256);
} my_map SEC(".maps");
SEC("socket1")
int bpf_prog1(struct __sk_buff *skb)

12
samples/bpf/sockex2_kern.c
View File

@ -190,12 +190,12 @@ struct pair {
long bytes;
};
struct bpf_map_def SEC("maps") hash_map = {
.type = BPF_MAP_TYPE_HASH,
.key_size = sizeof(__be32),
.value_size = sizeof(struct pair),
.max_entries = 1024,
};
struct {
__uint(type, BPF_MAP_TYPE_HASH);
__type(key, __be32);
__type(value, struct pair);
__uint(max_entries, 1024);
} hash_map SEC(".maps");
SEC("socket2")
int bpf_prog2(struct __sk_buff *skb)

12
samples/bpf/xdp1_kern.c
View File

@ -14,12 +14,12 @@
#include <linux/ipv6.h>
#include "bpf_helpers.h"
struct bpf_map_def SEC("maps") rxcnt = {
.type = BPF_MAP_TYPE_PERCPU_ARRAY,
.key_size = sizeof(u32),
.value_size = sizeof(long),
.max_entries = 256,
};
struct {
__uint(type, BPF_MAP_TYPE_PERCPU_ARRAY);
__type(key, u32);
__type(value, long);
__uint(max_entries, 256);
} rxcnt SEC(".maps");
static int parse_ipv4(void *data, u64 nh_off, void *data_end)
{

12
samples/bpf/xdp2_kern.c
View File

@ -14,12 +14,12 @@
#include <linux/ipv6.h>
#include "bpf_helpers.h"
struct bpf_map_def SEC("maps") rxcnt = {
.type = BPF_MAP_TYPE_PERCPU_ARRAY,
.key_size = sizeof(u32),
.value_size = sizeof(long),
.max_entries = 256,
};
struct {
__uint(type, BPF_MAP_TYPE_PERCPU_ARRAY);
__type(key, u32);
__type(value, long);
__uint(max_entries, 256);
} rxcnt SEC(".maps");
static void swap_src_dst_mac(void *data)
{

12
samples/bpf/xdp_adjust_tail_kern.c
View File

@ -28,12 +28,12 @@
/* volatile to prevent compiler optimizations */
static volatile __u32 max_pcktsz = MAX_PCKT_SIZE;
struct bpf_map_def SEC("maps") icmpcnt = {
.type = BPF_MAP_TYPE_ARRAY,
.key_size = sizeof(__u32),
.value_size = sizeof(__u64),
.max_entries = 1,
};
struct {
__uint(type, BPF_MAP_TYPE_ARRAY);
__type(key, __u32);
__type(value, __u64);
__uint(max_entries, 1);
} icmpcnt SEC(".maps");
static __always_inline void count_icmp(void)
{

13
samples/bpf/xdp_fwd_kern.c
View File

@ -23,13 +23,12 @@
#define IPV6_FLOWINFO_MASK cpu_to_be32(0x0FFFFFFF)
/* For TX-traffic redirect requires net_device ifindex to be in this devmap */
struct bpf_map_def SEC("maps") xdp_tx_ports = {
.type = BPF_MAP_TYPE_DEVMAP,
.key_size = sizeof(int),
.value_size = sizeof(int),
.max_entries = 64,
};
struct {
__uint(type, BPF_MAP_TYPE_DEVMAP);
__uint(key_size, sizeof(int));
__uint(value_size, sizeof(int));
__uint(max_entries, 64);
} xdp_tx_ports SEC(".maps");
/* from include/net/ip.h */
static __always_inline int ip_decrease_ttl(struct iphdr *iph)

108
samples/bpf/xdp_redirect_cpu_kern.c
View File

@ -18,12 +18,12 @@
#define MAX_CPUS 64 /* WARNING - sync with _user.c */
/* Special map type that can XDP_REDIRECT frames to another CPU */
struct bpf_map_def SEC("maps") cpu_map = {
.type = BPF_MAP_TYPE_CPUMAP,
.key_size = sizeof(u32),
.value_size = sizeof(u32),
.max_entries = MAX_CPUS,
};
struct {
__uint(type, BPF_MAP_TYPE_CPUMAP);
__uint(key_size, sizeof(u32));
__uint(value_size, sizeof(u32));
__uint(max_entries, MAX_CPUS);
} cpu_map SEC(".maps");
/* Common stats data record to keep userspace more simple */
struct datarec {
@ -35,67 +35,67 @@ struct datarec {
/* Count RX packets, as XDP bpf_prog doesn't get direct TX-success
* feedback. Redirect TX errors can be caught via a tracepoint.
*/
struct bpf_map_def SEC("maps") rx_cnt = {
.type = BPF_MAP_TYPE_PERCPU_ARRAY,
.key_size = sizeof(u32),
.value_size = sizeof(struct datarec),
.max_entries = 1,
};
struct {
__uint(type, BPF_MAP_TYPE_PERCPU_ARRAY);
__type(key, u32);
__type(value, struct datarec);
__uint(max_entries, 1);
} rx_cnt SEC(".maps");
/* Used by trace point */
struct bpf_map_def SEC("maps") redirect_err_cnt = {
.type = BPF_MAP_TYPE_PERCPU_ARRAY,
.key_size = sizeof(u32),
.value_size = sizeof(struct datarec),
.max_entries = 2,
struct {
__uint(type, BPF_MAP_TYPE_PERCPU_ARRAY);
__type(key, u32);
__type(value, struct datarec);
__uint(max_entries, 2);
/* TODO: have entries for all possible errno's */
};
} redirect_err_cnt SEC(".maps");
/* Used by trace point */
struct bpf_map_def SEC("maps") cpumap_enqueue_cnt = {
.type = BPF_MAP_TYPE_PERCPU_ARRAY,
.key_size = sizeof(u32),
.value_size = sizeof(struct datarec),
.max_entries = MAX_CPUS,
};
struct {
__uint(type, BPF_MAP_TYPE_PERCPU_ARRAY);
__type(key, u32);
__type(value, struct datarec);
__uint(max_entries, MAX_CPUS);
} cpumap_enqueue_cnt SEC(".maps");
/* Used by trace point */
struct bpf_map_def SEC("maps") cpumap_kthread_cnt = {
.type = BPF_MAP_TYPE_PERCPU_ARRAY,
.key_size = sizeof(u32),
.value_size = sizeof(struct datarec),
.max_entries = 1,
};
struct {
__uint(type, BPF_MAP_TYPE_PERCPU_ARRAY);
__type(key, u32);
__type(value, struct datarec);
__uint(max_entries, 1);
} cpumap_kthread_cnt SEC(".maps");
/* Set of maps controlling available CPU, and for iterating through
* selectable redirect CPUs.
*/
struct bpf_map_def SEC("maps") cpus_available = {
.type = BPF_MAP_TYPE_ARRAY,
.key_size = sizeof(u32),
.value_size = sizeof(u32),
.max_entries = MAX_CPUS,
};
struct bpf_map_def SEC("maps") cpus_count = {
.type = BPF_MAP_TYPE_ARRAY,
.key_size = sizeof(u32),
.value_size = sizeof(u32),
.max_entries = 1,
};
struct bpf_map_def SEC("maps") cpus_iterator = {
.type = BPF_MAP_TYPE_PERCPU_ARRAY,
.key_size = sizeof(u32),
.value_size = sizeof(u32),
.max_entries = 1,
};
struct {
__uint(type, BPF_MAP_TYPE_ARRAY);
__type(key, u32);
__type(value, u32);
__uint(max_entries, MAX_CPUS);
} cpus_available SEC(".maps");
struct {
__uint(type, BPF_MAP_TYPE_ARRAY);
__type(key, u32);
__type(value, u32);
__uint(max_entries, 1);
} cpus_count SEC(".maps");
struct {
__uint(type, BPF_MAP_TYPE_PERCPU_ARRAY);
__type(key, u32);
__type(value, u32);
__uint(max_entries, 1);
} cpus_iterator SEC(".maps");
/* Used by trace point */
struct bpf_map_def SEC("maps") exception_cnt = {
.type = BPF_MAP_TYPE_PERCPU_ARRAY,
.key_size = sizeof(u32),
.value_size = sizeof(struct datarec),
.max_entries = 1,
};
struct {
__uint(type, BPF_MAP_TYPE_PERCPU_ARRAY);
__type(key, u32);
__type(value, struct datarec);
__uint(max_entries, 1);
} exception_cnt SEC(".maps");
/* Helper parse functions */

24
samples/bpf/xdp_redirect_kern.c
View File

@ -19,22 +19,22 @@
#include <linux/ipv6.h>
#include "bpf_helpers.h"
struct bpf_map_def SEC("maps") tx_port = {
.type = BPF_MAP_TYPE_ARRAY,
.key_size = sizeof(int),
.value_size = sizeof(int),
.max_entries = 1,
};
struct {
__uint(type, BPF_MAP_TYPE_ARRAY);
__type(key, int);
__type(value, int);
__uint(max_entries, 1);
} tx_port SEC(".maps");
/* Count RX packets, as XDP bpf_prog doesn't get direct TX-success
* feedback. Redirect TX errors can be caught via a tracepoint.
*/
struct bpf_map_def SEC("maps") rxcnt = {
.type = BPF_MAP_TYPE_PERCPU_ARRAY,
.key_size = sizeof(u32),
.value_size = sizeof(long),
.max_entries = 1,
};
struct {
__uint(type, BPF_MAP_TYPE_PERCPU_ARRAY);
__type(key, u32);
__type(value, long);
__uint(max_entries, 1);
} rxcnt SEC(".maps");
static void swap_src_dst_mac(void *data)
{

24
samples/bpf/xdp_redirect_map_kern.c
View File

@ -19,22 +19,22 @@
#include <linux/ipv6.h>
#include "bpf_helpers.h"
struct bpf_map_def SEC("maps") tx_port = {
.type = BPF_MAP_TYPE_DEVMAP,
.key_size = sizeof(int),
.value_size = sizeof(int),
.max_entries = 100,
};
struct {
__uint(type, BPF_MAP_TYPE_DEVMAP);
__uint(key_size, sizeof(int));
__uint(value_size, sizeof(int));
__uint(max_entries, 100);
} tx_port SEC(".maps");
/* Count RX packets, as XDP bpf_prog doesn't get direct TX-success
* feedback. Redirect TX errors can be caught via a tracepoint.
*/
struct bpf_map_def SEC("maps") rxcnt = {
.type = BPF_MAP_TYPE_PERCPU_ARRAY,
.key_size = sizeof(u32),
.value_size = sizeof(long),
.max_entries = 1,
};
struct {
__uint(type, BPF_MAP_TYPE_PERCPU_ARRAY);
__type(key, u32);
__type(value, long);
__uint(max_entries, 1);
} rxcnt SEC(".maps");
static void swap_src_dst_mac(void *data)
{

62
samples/bpf/xdp_router_ipv4_kern.c
View File

@ -42,44 +42,44 @@ struct direct_map {
};
/* Map for trie implementation*/
struct bpf_map_def SEC("maps") lpm_map = {
.type = BPF_MAP_TYPE_LPM_TRIE,
.key_size = 8,
.value_size = sizeof(struct trie_value),
.max_entries = 50,
.map_flags = BPF_F_NO_PREALLOC,
};
struct {
__uint(type, BPF_MAP_TYPE_LPM_TRIE);
__uint(key_size, 8);
__uint(value_size, sizeof(struct trie_value));
__uint(max_entries, 50);
__uint(map_flags, BPF_F_NO_PREALLOC);
} lpm_map SEC(".maps");
/* Map for counter*/
struct bpf_map_def SEC("maps") rxcnt = {
.type = BPF_MAP_TYPE_PERCPU_ARRAY,
.key_size = sizeof(u32),
.value_size = sizeof(u64),
.max_entries = 256,
};
struct {
__uint(type, BPF_MAP_TYPE_PERCPU_ARRAY);
__type(key, u32);
__type(value, u64);
__uint(max_entries, 256);
} rxcnt SEC(".maps");
/* Map for ARP table*/
struct bpf_map_def SEC("maps") arp_table = {
.type = BPF_MAP_TYPE_HASH,
.key_size = sizeof(__be32),
.value_size = sizeof(__be64),
.max_entries = 50,
};
struct {
__uint(type, BPF_MAP_TYPE_HASH);
__type(key, __be32);
__type(value, __be64);
__uint(max_entries, 50);
} arp_table SEC(".maps");
/* Map to keep the exact match entries in the route table*/
struct bpf_map_def SEC("maps") exact_match = {
.type = BPF_MAP_TYPE_HASH,
.key_size = sizeof(__be32),
.value_size = sizeof(struct direct_map),
.max_entries = 50,
};
struct {
__uint(type, BPF_MAP_TYPE_HASH);
__type(key, __be32);
__type(value, struct direct_map);
__uint(max_entries, 50);
} exact_match SEC(".maps");
struct bpf_map_def SEC("maps") tx_port = {
.type = BPF_MAP_TYPE_DEVMAP,
.key_size = sizeof(int),
.value_size = sizeof(int),
.max_entries = 100,
};
struct {
__uint(type, BPF_MAP_TYPE_DEVMAP);
__uint(key_size, sizeof(int));
__uint(value_size, sizeof(int));
__uint(max_entries, 100);
} tx_port SEC(".maps");
/* Function to set source and destination mac of the packet */
static inline void set_src_dst_mac(void *data, void *src, void *dst)

37
samples/bpf/xdp_rxq_info_kern.c
View File

@ -23,12 +23,13 @@ enum cfg_options_flags {
READ_MEM = 0x1U,
SWAP_MAC = 0x2U,
};
struct bpf_map_def SEC("maps") config_map = {
.type = BPF_MAP_TYPE_ARRAY,
.key_size = sizeof(int),
.value_size = sizeof(struct config),
.max_entries = 1,
};
struct {
__uint(type, BPF_MAP_TYPE_ARRAY);
__type(key, int);
__type(value, struct config);
__uint(max_entries, 1);
} config_map SEC(".maps");
/* Common stats data record (shared with userspace) */
struct datarec {
@ -36,22 +37,22 @@ struct datarec {
__u64 issue;
};
struct bpf_map_def SEC("maps") stats_global_map = {
.type = BPF_MAP_TYPE_PERCPU_ARRAY,
.key_size = sizeof(u32),
.value_size = sizeof(struct datarec),
.max_entries = 1,
};
struct {
__uint(type, BPF_MAP_TYPE_PERCPU_ARRAY);
__type(key, u32);
__type(value, struct datarec);
__uint(max_entries, 1);
} stats_global_map SEC(".maps");
#define MAX_RXQs 64
/* Stats per rx_queue_index (per CPU) */
struct bpf_map_def SEC("maps") rx_queue_index_map = {
.type = BPF_MAP_TYPE_PERCPU_ARRAY,
.key_size = sizeof(u32),
.value_size = sizeof(struct datarec),
.max_entries = MAX_RXQs + 1,
};
struct {
__uint(type, BPF_MAP_TYPE_PERCPU_ARRAY);
__type(key, u32);
__type(value, struct datarec);
__uint(max_entries, MAX_RXQs + 1);
} rx_queue_index_map SEC(".maps");
static __always_inline
void swap_src_dst_mac(void *data)

24
samples/bpf/xdp_tx_iptunnel_kern.c
View File

@ -19,19 +19,19 @@
#include "bpf_helpers.h"
#include "xdp_tx_iptunnel_common.h"
struct bpf_map_def SEC("maps") rxcnt = {
.type = BPF_MAP_TYPE_PERCPU_ARRAY,
.key_size = sizeof(__u32),
.value_size = sizeof(__u64),
.max_entries = 256,
};
struct {
__uint(type, BPF_MAP_TYPE_PERCPU_ARRAY);
__type(key, __u32);
__type(value, __u64);
__uint(max_entries, 256);
} rxcnt SEC(".maps");
struct bpf_map_def SEC("maps") vip2tnl = {
.type = BPF_MAP_TYPE_HASH,
.key_size = sizeof(struct vip),
.value_size = sizeof(struct iptnl_info),
.max_entries = MAX_IPTNL_ENTRIES,
};
struct {
__uint(type, BPF_MAP_TYPE_HASH);
__type(key, struct vip);
__type(value, struct iptnl_info);
__uint(max_entries, MAX_IPTNL_ENTRIES);
} vip2tnl SEC(".maps");
static __always_inline void count_tx(u32 protocol)
{