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bpf: Compute map_btf_id during build time

Browse source 
For now, the field 'map_btf_id' in 'struct bpf_map_ops' for all map
types are computed during vmlinux-btf init:

  btf_parse_vmlinux() -> btf_vmlinux_map_ids_init()

It will lookup the btf_type according to the 'map_btf_name' field in
'struct bpf_map_ops'. This process can be done during build time,
thanks to Jiri's resolve_btfids.

selftest of map_ptr has passed:

  $96 map_ptr:OK
  Summary: 1/0 PASSED, 0 SKIPPED, 0 FAILED

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Menglong Dong <imagedong@tencent.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Menglong Dong 2022-04-25 21:32:47 +08:00 committed by Alexei Starovoitov
parent 367590b7fc
commit c317ab71fa
19 changed files with 62 additions and 129 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
include/linux/bpf.h
View file

@ -148,8 +148,7 @@ struct bpf_map_ops {
bpf_callback_t callback_fn,
void *callback_ctx, u64 flags);
/* BTF name and id of struct allocated by map_alloc */
const char * const map_btf_name;
/* BTF id of struct allocated by map_alloc */
int *map_btf_id;
/* bpf_iter info used to open a seq_file */

26
kernel/bpf/arraymap.c
View file

@ -11,6 +11,7 @@
#include <linux/perf_event.h>
#include <uapi/linux/btf.h>
#include <linux/rcupdate_trace.h>
#include <linux/btf_ids.h>
#include "map_in_map.h"
@ -690,7 +691,7 @@ static int bpf_for_each_array_elem(struct bpf_map *map, bpf_callback_t callback_
return num_elems;
}
static int array_map_btf_id;
BTF_ID_LIST_SINGLE(array_map_btf_ids, struct, bpf_array)
const struct bpf_map_ops array_map_ops = {
.map_meta_equal = array_map_meta_equal,
.map_alloc_check = array_map_alloc_check,
@ -711,12 +712,10 @@ const struct bpf_map_ops array_map_ops = {
.map_update_batch = generic_map_update_batch,
.map_set_for_each_callback_args = map_set_for_each_callback_args,
.map_for_each_callback = bpf_for_each_array_elem,
.map_btf_name = "bpf_array",
.map_btf_id = &array_map_btf_id,
.map_btf_id = &array_map_btf_ids[0],
.iter_seq_info = &iter_seq_info,
};
static int percpu_array_map_btf_id;
const struct bpf_map_ops percpu_array_map_ops = {
.map_meta_equal = bpf_map_meta_equal,
.map_alloc_check = array_map_alloc_check,
@ -732,8 +731,7 @@ const struct bpf_map_ops percpu_array_map_ops = {
.map_update_batch = generic_map_update_batch,
.map_set_for_each_callback_args = map_set_for_each_callback_args,
.map_for_each_callback = bpf_for_each_array_elem,
.map_btf_name = "bpf_array",
.map_btf_id = &percpu_array_map_btf_id,
.map_btf_id = &array_map_btf_ids[0],
.iter_seq_info = &iter_seq_info,
};
@ -1112,7 +1110,6 @@ static void prog_array_map_free(struct bpf_map *map)
* Thus, prog_array_map cannot be used as an inner_map
* and map_meta_equal is not implemented.
*/
static int prog_array_map_btf_id;
const struct bpf_map_ops prog_array_map_ops = {
.map_alloc_check = fd_array_map_alloc_check,
.map_alloc = prog_array_map_alloc,
@ -1128,8 +1125,7 @@ const struct bpf_map_ops prog_array_map_ops = {
.map_fd_sys_lookup_elem = prog_fd_array_sys_lookup_elem,
.map_release_uref = prog_array_map_clear,
.map_seq_show_elem = prog_array_map_seq_show_elem,
.map_btf_name = "bpf_array",
.map_btf_id = &prog_array_map_btf_id,
.map_btf_id = &array_map_btf_ids[0],
};
static struct bpf_event_entry *bpf_event_entry_gen(struct file *perf_file,
@ -1218,7 +1214,6 @@ static void perf_event_fd_array_map_free(struct bpf_map *map)
fd_array_map_free(map);
}
static int perf_event_array_map_btf_id;
const struct bpf_map_ops perf_event_array_map_ops = {
.map_meta_equal = bpf_map_meta_equal,
.map_alloc_check = fd_array_map_alloc_check,
@ -1231,8 +1226,7 @@ const struct bpf_map_ops perf_event_array_map_ops = {
.map_fd_put_ptr = perf_event_fd_array_put_ptr,
.map_release = perf_event_fd_array_release,
.map_check_btf = map_check_no_btf,
.map_btf_name = "bpf_array",
.map_btf_id = &perf_event_array_map_btf_id,
.map_btf_id = &array_map_btf_ids[0],
};
#ifdef CONFIG_CGROUPS
@ -1255,7 +1249,6 @@ static void cgroup_fd_array_free(struct bpf_map *map)
fd_array_map_free(map);
}
static int cgroup_array_map_btf_id;
const struct bpf_map_ops cgroup_array_map_ops = {
.map_meta_equal = bpf_map_meta_equal,
.map_alloc_check = fd_array_map_alloc_check,
@ -1267,8 +1260,7 @@ const struct bpf_map_ops cgroup_array_map_ops = {
.map_fd_get_ptr = cgroup_fd_array_get_ptr,
.map_fd_put_ptr = cgroup_fd_array_put_ptr,
.map_check_btf = map_check_no_btf,
.map_btf_name = "bpf_array",
.map_btf_id = &cgroup_array_map_btf_id,
.map_btf_id = &array_map_btf_ids[0],
};
#endif
@ -1342,7 +1334,6 @@ static int array_of_map_gen_lookup(struct bpf_map *map,
return insn - insn_buf;
}
static int array_of_maps_map_btf_id;
const struct bpf_map_ops array_of_maps_map_ops = {
.map_alloc_check = fd_array_map_alloc_check,
.map_alloc = array_of_map_alloc,
@ -1355,6 +1346,5 @@ const struct bpf_map_ops array_of_maps_map_ops = {
.map_fd_sys_lookup_elem = bpf_map_fd_sys_lookup_elem,
.map_gen_lookup = array_of_map_gen_lookup,
.map_check_btf = map_check_no_btf,
.map_btf_name = "bpf_array",
.map_btf_id = &array_of_maps_map_btf_id,
.map_btf_id = &array_map_btf_ids[0],
};

6
kernel/bpf/bloom_filter.c
View file

@ -7,6 +7,7 @@
#include <linux/err.h>
#include <linux/jhash.h>
#include <linux/random.h>
#include <linux/btf_ids.h>
#define BLOOM_CREATE_FLAG_MASK \
(BPF_F_NUMA_NODE | BPF_F_ZERO_SEED | BPF_F_ACCESS_MASK)
@ -192,7 +193,7 @@ static int bloom_map_check_btf(const struct bpf_map *map,
return btf_type_is_void(key_type) ? 0 : -EINVAL;
}
static int bpf_bloom_map_btf_id;
BTF_ID_LIST_SINGLE(bpf_bloom_map_btf_ids, struct, bpf_bloom_filter)
const struct bpf_map_ops bloom_filter_map_ops = {
.map_meta_equal = bpf_map_meta_equal,
.map_alloc = bloom_map_alloc,
@ -205,6 +206,5 @@ const struct bpf_map_ops bloom_filter_map_ops = {
.map_update_elem = bloom_map_update_elem,
.map_delete_elem = bloom_map_delete_elem,
.map_check_btf = bloom_map_check_btf,
.map_btf_name = "bpf_bloom_filter",
.map_btf_id = &bpf_bloom_map_btf_id,
.map_btf_id = &bpf_bloom_map_btf_ids[0],
};

6
kernel/bpf/bpf_inode_storage.c
View file

@ -245,7 +245,8 @@ static void inode_storage_map_free(struct bpf_map *map)
bpf_local_storage_map_free(smap, NULL);
}
static int inode_storage_map_btf_id;
BTF_ID_LIST_SINGLE(inode_storage_map_btf_ids, struct,
bpf_local_storage_map)
const struct bpf_map_ops inode_storage_map_ops = {
.map_meta_equal = bpf_map_meta_equal,
.map_alloc_check = bpf_local_storage_map_alloc_check,
@ -256,8 +257,7 @@ const struct bpf_map_ops inode_storage_map_ops = {
.map_update_elem = bpf_fd_inode_storage_update_elem,
.map_delete_elem = bpf_fd_inode_storage_delete_elem,
.map_check_btf = bpf_local_storage_map_check_btf,
.map_btf_name = "bpf_local_storage_map",
.map_btf_id = &inode_storage_map_btf_id,
.map_btf_id = &inode_storage_map_btf_ids[0],
.map_owner_storage_ptr = inode_storage_ptr,
};

6
kernel/bpf/bpf_struct_ops.c
View file

@ -10,6 +10,7 @@
#include <linux/seq_file.h>
#include <linux/refcount.h>
#include <linux/mutex.h>
#include <linux/btf_ids.h>
enum bpf_struct_ops_state {
BPF_STRUCT_OPS_STATE_INIT,
@ -612,7 +613,7 @@ static struct bpf_map *bpf_struct_ops_map_alloc(union bpf_attr *attr)
return map;
}
static int bpf_struct_ops_map_btf_id;
BTF_ID_LIST_SINGLE(bpf_struct_ops_map_btf_ids, struct, bpf_struct_ops_map)
const struct bpf_map_ops bpf_struct_ops_map_ops = {
.map_alloc_check = bpf_struct_ops_map_alloc_check,
.map_alloc = bpf_struct_ops_map_alloc,
@ -622,8 +623,7 @@ const struct bpf_map_ops bpf_struct_ops_map_ops = {
.map_delete_elem = bpf_struct_ops_map_delete_elem,
.map_update_elem = bpf_struct_ops_map_update_elem,
.map_seq_show_elem = bpf_struct_ops_map_seq_show_elem,
.map_btf_name = "bpf_struct_ops_map",
.map_btf_id = &bpf_struct_ops_map_btf_id,
.map_btf_id = &bpf_struct_ops_map_btf_ids[0],
};
/* "const void *" because some subsystem is

5
kernel/bpf/bpf_task_storage.c
View file

@ -307,7 +307,7 @@ static void task_storage_map_free(struct bpf_map *map)
bpf_local_storage_map_free(smap, &bpf_task_storage_busy);
}
static int task_storage_map_btf_id;
BTF_ID_LIST_SINGLE(task_storage_map_btf_ids, struct, bpf_local_storage_map)
const struct bpf_map_ops task_storage_map_ops = {
.map_meta_equal = bpf_map_meta_equal,
.map_alloc_check = bpf_local_storage_map_alloc_check,
@ -318,8 +318,7 @@ const struct bpf_map_ops task_storage_map_ops = {
.map_update_elem = bpf_pid_task_storage_update_elem,
.map_delete_elem = bpf_pid_task_storage_delete_elem,
.map_check_btf = bpf_local_storage_map_check_btf,
.map_btf_name = "bpf_local_storage_map",
.map_btf_id = &task_storage_map_btf_id,
.map_btf_id = &task_storage_map_btf_ids[0],
.map_owner_storage_ptr = task_storage_ptr,
};

40
kernel/bpf/btf.c
View file

@ -5025,41 +5025,6 @@ btf_get_prog_ctx_type(struct bpf_verifier_log *log, const struct btf *btf,
return ctx_type;
}
static const struct bpf_map_ops * const btf_vmlinux_map_ops[] = {
#define BPF_PROG_TYPE(_id, _name, prog_ctx_type, kern_ctx_type)
#define BPF_LINK_TYPE(_id, _name)
#define BPF_MAP_TYPE(_id, _ops) \
[_id] = &_ops,
#include <linux/bpf_types.h>
#undef BPF_PROG_TYPE
#undef BPF_LINK_TYPE
#undef BPF_MAP_TYPE
};
static int btf_vmlinux_map_ids_init(const struct btf *btf,
struct bpf_verifier_log *log)
{
const struct bpf_map_ops *ops;
int i, btf_id;
for (i = 0; i < ARRAY_SIZE(btf_vmlinux_map_ops); ++i) {
ops = btf_vmlinux_map_ops[i];
if (!ops || (!ops->map_btf_name && !ops->map_btf_id))
continue;
if (!ops->map_btf_name || !ops->map_btf_id) {
bpf_log(log, "map type %d is misconfigured\n", i);
return -EINVAL;
}
btf_id = btf_find_by_name_kind(btf, ops->map_btf_name,
BTF_KIND_STRUCT);
if (btf_id < 0)
return btf_id;
*ops->map_btf_id = btf_id;
}
return 0;
}
static int btf_translate_to_vmlinux(struct bpf_verifier_log *log,
struct btf *btf,
const struct btf_type *t,
@ -5125,11 +5090,6 @@ struct btf *btf_parse_vmlinux(void)
/* btf_parse_vmlinux() runs under bpf_verifier_lock */
bpf_ctx_convert.t = btf_type_by_id(btf, bpf_ctx_convert_btf_id[0]);
/* find bpf map structs for map_ptr access checking */
err = btf_vmlinux_map_ids_init(btf, log);
if (err < 0)
goto errout;
bpf_struct_ops_init(btf, log);
refcount_set(&btf->refcnt, 1);

6
kernel/bpf/cpumap.c
View file

@ -27,6 +27,7 @@
#include <linux/kthread.h>
#include <linux/capability.h>
#include <trace/events/xdp.h>
#include <linux/btf_ids.h>
#include <linux/netdevice.h> /* netif_receive_skb_list */
#include <linux/etherdevice.h> /* eth_type_trans */
@ -673,7 +674,7 @@ static int cpu_map_redirect(struct bpf_map *map, u32 ifindex, u64 flags)
__cpu_map_lookup_elem);
}
static int cpu_map_btf_id;
BTF_ID_LIST_SINGLE(cpu_map_btf_ids, struct, bpf_cpu_map)
const struct bpf_map_ops cpu_map_ops = {
.map_meta_equal = bpf_map_meta_equal,
.map_alloc = cpu_map_alloc,
@ -683,8 +684,7 @@ const struct bpf_map_ops cpu_map_ops = {
.map_lookup_elem = cpu_map_lookup_elem,
.map_get_next_key = cpu_map_get_next_key,
.map_check_btf = map_check_no_btf,
.map_btf_name = "bpf_cpu_map",
.map_btf_id = &cpu_map_btf_id,
.map_btf_id = &cpu_map_btf_ids[0],
.map_redirect = cpu_map_redirect,
};

10
kernel/bpf/devmap.c
View file

@ -48,6 +48,7 @@
#include <net/xdp.h>
#include <linux/filter.h>
#include <trace/events/xdp.h>
#include <linux/btf_ids.h>
#define DEV_CREATE_FLAG_MASK \
(BPF_F_NUMA_NODE | BPF_F_RDONLY | BPF_F_WRONLY)
@ -1005,7 +1006,7 @@ static int dev_hash_map_redirect(struct bpf_map *map, u32 ifindex, u64 flags)
__dev_map_hash_lookup_elem);
}
static int dev_map_btf_id;
BTF_ID_LIST_SINGLE(dev_map_btf_ids, struct, bpf_dtab)
const struct bpf_map_ops dev_map_ops = {
.map_meta_equal = bpf_map_meta_equal,
.map_alloc = dev_map_alloc,
@ -1015,12 +1016,10 @@ const struct bpf_map_ops dev_map_ops = {
.map_update_elem = dev_map_update_elem,
.map_delete_elem = dev_map_delete_elem,
.map_check_btf = map_check_no_btf,
.map_btf_name = "bpf_dtab",
.map_btf_id = &dev_map_btf_id,
.map_btf_id = &dev_map_btf_ids[0],
.map_redirect = dev_map_redirect,
};
static int dev_map_hash_map_btf_id;
const struct bpf_map_ops dev_map_hash_ops = {
.map_meta_equal = bpf_map_meta_equal,
.map_alloc = dev_map_alloc,
@ -1030,8 +1029,7 @@ const struct bpf_map_ops dev_map_hash_ops = {
.map_update_elem = dev_map_hash_update_elem,
.map_delete_elem = dev_map_hash_delete_elem,
.map_check_btf = map_check_no_btf,
.map_btf_name = "bpf_dtab",
.map_btf_id = &dev_map_hash_map_btf_id,
.map_btf_id = &dev_map_btf_ids[0],
.map_redirect = dev_hash_map_redirect,
};

22
kernel/bpf/hashtab.c
View file

@ -10,6 +10,7 @@
#include <linux/random.h>
#include <uapi/linux/btf.h>
#include <linux/rcupdate_trace.h>
#include <linux/btf_ids.h>
#include "percpu_freelist.h"
#include "bpf_lru_list.h"
#include "map_in_map.h"
@ -2137,7 +2138,7 @@ static int bpf_for_each_hash_elem(struct bpf_map *map, bpf_callback_t callback_f
return num_elems;
}
static int htab_map_btf_id;
BTF_ID_LIST_SINGLE(htab_map_btf_ids, struct, bpf_htab)
const struct bpf_map_ops htab_map_ops = {
.map_meta_equal = bpf_map_meta_equal,
.map_alloc_check = htab_map_alloc_check,
@ -2154,12 +2155,10 @@ const struct bpf_map_ops htab_map_ops = {
.map_set_for_each_callback_args = map_set_for_each_callback_args,
.map_for_each_callback = bpf_for_each_hash_elem,
BATCH_OPS(htab),
.map_btf_name = "bpf_htab",
.map_btf_id = &htab_map_btf_id,
.map_btf_id = &htab_map_btf_ids[0],
.iter_seq_info = &iter_seq_info,
};
static int htab_lru_map_btf_id;
const struct bpf_map_ops htab_lru_map_ops = {
.map_meta_equal = bpf_map_meta_equal,
.map_alloc_check = htab_map_alloc_check,
@ -2177,8 +2176,7 @@ const struct bpf_map_ops htab_lru_map_ops = {
.map_set_for_each_callback_args = map_set_for_each_callback_args,
.map_for_each_callback = bpf_for_each_hash_elem,
BATCH_OPS(htab_lru),
.map_btf_name = "bpf_htab",
.map_btf_id = &htab_lru_map_btf_id,
.map_btf_id = &htab_map_btf_ids[0],
.iter_seq_info = &iter_seq_info,
};
@ -2284,7 +2282,6 @@ static void htab_percpu_map_seq_show_elem(struct bpf_map *map, void *key,
rcu_read_unlock();
}
static int htab_percpu_map_btf_id;
const struct bpf_map_ops htab_percpu_map_ops = {
.map_meta_equal = bpf_map_meta_equal,
.map_alloc_check = htab_map_alloc_check,
@ -2299,12 +2296,10 @@ const struct bpf_map_ops htab_percpu_map_ops = {
.map_set_for_each_callback_args = map_set_for_each_callback_args,
.map_for_each_callback = bpf_for_each_hash_elem,
BATCH_OPS(htab_percpu),
.map_btf_name = "bpf_htab",
.map_btf_id = &htab_percpu_map_btf_id,
.map_btf_id = &htab_map_btf_ids[0],
.iter_seq_info = &iter_seq_info,
};
static int htab_lru_percpu_map_btf_id;
const struct bpf_map_ops htab_lru_percpu_map_ops = {
.map_meta_equal = bpf_map_meta_equal,
.map_alloc_check = htab_map_alloc_check,
@ -2319,8 +2314,7 @@ const struct bpf_map_ops htab_lru_percpu_map_ops = {
.map_set_for_each_callback_args = map_set_for_each_callback_args,
.map_for_each_callback = bpf_for_each_hash_elem,
BATCH_OPS(htab_lru_percpu),
.map_btf_name = "bpf_htab",
.map_btf_id = &htab_lru_percpu_map_btf_id,
.map_btf_id = &htab_map_btf_ids[0],
.iter_seq_info = &iter_seq_info,
};
@ -2444,7 +2438,6 @@ static void htab_of_map_free(struct bpf_map *map)
fd_htab_map_free(map);
}
static int htab_of_maps_map_btf_id;
const struct bpf_map_ops htab_of_maps_map_ops = {
.map_alloc_check = fd_htab_map_alloc_check,
.map_alloc = htab_of_map_alloc,
@ -2457,6 +2450,5 @@ const struct bpf_map_ops htab_of_maps_map_ops = {
.map_fd_sys_lookup_elem = bpf_map_fd_sys_lookup_elem,
.map_gen_lookup = htab_of_map_gen_lookup,
.map_check_btf = map_check_no_btf,
.map_btf_name = "bpf_htab",
.map_btf_id = &htab_of_maps_map_btf_id,
.map_btf_id = &htab_map_btf_ids[0],
};

7
kernel/bpf/local_storage.c
View file

@ -9,6 +9,7 @@
#include <linux/rbtree.h>
#include <linux/slab.h>
#include <uapi/linux/btf.h>
#include <linux/btf_ids.h>
#ifdef CONFIG_CGROUP_BPF
@ -446,7 +447,8 @@ static void cgroup_storage_seq_show_elem(struct bpf_map *map, void *key,
rcu_read_unlock();
}
static int cgroup_storage_map_btf_id;
BTF_ID_LIST_SINGLE(cgroup_storage_map_btf_ids, struct,
bpf_cgroup_storage_map)
const struct bpf_map_ops cgroup_storage_map_ops = {
.map_alloc = cgroup_storage_map_alloc,
.map_free = cgroup_storage_map_free,
@ -456,8 +458,7 @@ const struct bpf_map_ops cgroup_storage_map_ops = {
.map_delete_elem = cgroup_storage_delete_elem,
.map_check_btf = cgroup_storage_check_btf,
.map_seq_show_elem = cgroup_storage_seq_show_elem,
.map_btf_name = "bpf_cgroup_storage_map",
.map_btf_id = &cgroup_storage_map_btf_id,
.map_btf_id = &cgroup_storage_map_btf_ids[0],
};
int bpf_cgroup_storage_assign(struct bpf_prog_aux *aux, struct bpf_map *_map)

6
kernel/bpf/lpm_trie.c
View file

@ -14,6 +14,7 @@
#include <linux/vmalloc.h>
#include <net/ipv6.h>
#include <uapi/linux/btf.h>
#include <linux/btf_ids.h>
/* Intermediate node */
#define LPM_TREE_NODE_FLAG_IM BIT(0)
@ -719,7 +720,7 @@ static int trie_check_btf(const struct bpf_map *map,
-EINVAL : 0;
}
static int trie_map_btf_id;
BTF_ID_LIST_SINGLE(trie_map_btf_ids, struct, lpm_trie)
const struct bpf_map_ops trie_map_ops = {
.map_meta_equal = bpf_map_meta_equal,
.map_alloc = trie_alloc,
@ -732,6 +733,5 @@ const struct bpf_map_ops trie_map_ops = {
.map_update_batch = generic_map_update_batch,
.map_delete_batch = generic_map_delete_batch,
.map_check_btf = trie_check_btf,
.map_btf_name = "lpm_trie",
.map_btf_id = &trie_map_btf_id,
.map_btf_id = &trie_map_btf_ids[0],
};

10
kernel/bpf/queue_stack_maps.c
View file

@ -8,6 +8,7 @@
#include <linux/list.h>
#include <linux/slab.h>
#include <linux/capability.h>
#include <linux/btf_ids.h>
#include "percpu_freelist.h"
#define QUEUE_STACK_CREATE_FLAG_MASK \
@ -247,7 +248,7 @@ static int queue_stack_map_get_next_key(struct bpf_map *map, void *key,
return -EINVAL;
}
static int queue_map_btf_id;
BTF_ID_LIST_SINGLE(queue_map_btf_ids, struct, bpf_queue_stack)
const struct bpf_map_ops queue_map_ops = {
.map_meta_equal = bpf_map_meta_equal,
.map_alloc_check = queue_stack_map_alloc_check,
@ -260,11 +261,9 @@ const struct bpf_map_ops queue_map_ops = {
.map_pop_elem = queue_map_pop_elem,
.map_peek_elem = queue_map_peek_elem,
.map_get_next_key = queue_stack_map_get_next_key,
.map_btf_name = "bpf_queue_stack",
.map_btf_id = &queue_map_btf_id,
.map_btf_id = &queue_map_btf_ids[0],
};
static int stack_map_btf_id;
const struct bpf_map_ops stack_map_ops = {
.map_meta_equal = bpf_map_meta_equal,
.map_alloc_check = queue_stack_map_alloc_check,
@ -277,6 +276,5 @@ const struct bpf_map_ops stack_map_ops = {
.map_pop_elem = stack_map_pop_elem,
.map_peek_elem = stack_map_peek_elem,
.map_get_next_key = queue_stack_map_get_next_key,
.map_btf_name = "bpf_queue_stack",
.map_btf_id = &stack_map_btf_id,
.map_btf_id = &queue_map_btf_ids[0],
};

6
kernel/bpf/reuseport_array.c
View file

@ -6,6 +6,7 @@
#include <linux/err.h>
#include <linux/sock_diag.h>
#include <net/sock_reuseport.h>
#include <linux/btf_ids.h>
struct reuseport_array {
struct bpf_map map;
@ -337,7 +338,7 @@ static int reuseport_array_get_next_key(struct bpf_map *map, void *key,
return 0;
}
static int reuseport_array_map_btf_id;
BTF_ID_LIST_SINGLE(reuseport_array_map_btf_ids, struct, reuseport_array)
const struct bpf_map_ops reuseport_array_ops = {
.map_meta_equal = bpf_map_meta_equal,
.map_alloc_check = reuseport_array_alloc_check,
@ -346,6 +347,5 @@ const struct bpf_map_ops reuseport_array_ops = {
.map_lookup_elem = reuseport_array_lookup_elem,
.map_get_next_key = reuseport_array_get_next_key,
.map_delete_elem = reuseport_array_delete_elem,
.map_btf_name = "reuseport_array",
.map_btf_id = &reuseport_array_map_btf_id,
.map_btf_id = &reuseport_array_map_btf_ids[0],
};

6
kernel/bpf/ringbuf.c
View file

@ -10,6 +10,7 @@
#include <linux/poll.h>
#include <linux/kmemleak.h>
#include <uapi/linux/btf.h>
#include <linux/btf_ids.h>
#define RINGBUF_CREATE_FLAG_MASK (BPF_F_NUMA_NODE)
@ -263,7 +264,7 @@ static __poll_t ringbuf_map_poll(struct bpf_map *map, struct file *filp,
return 0;
}
static int ringbuf_map_btf_id;
BTF_ID_LIST_SINGLE(ringbuf_map_btf_ids, struct, bpf_ringbuf_map)
const struct bpf_map_ops ringbuf_map_ops = {
.map_meta_equal = bpf_map_meta_equal,
.map_alloc = ringbuf_map_alloc,
@ -274,8 +275,7 @@ const struct bpf_map_ops ringbuf_map_ops = {
.map_update_elem = ringbuf_map_update_elem,
.map_delete_elem = ringbuf_map_delete_elem,
.map_get_next_key = ringbuf_map_get_next_key,
.map_btf_name = "bpf_ringbuf_map",
.map_btf_id = &ringbuf_map_btf_id,
.map_btf_id = &ringbuf_map_btf_ids[0],
};
/* Given pointer to ring buffer record metadata and struct bpf_ringbuf itself,

5
kernel/bpf/stackmap.c
View file

@ -654,7 +654,7 @@ static void stack_map_free(struct bpf_map *map)
put_callchain_buffers();
}
static int stack_trace_map_btf_id;
BTF_ID_LIST_SINGLE(stack_trace_map_btf_ids, struct, bpf_stack_map)
const struct bpf_map_ops stack_trace_map_ops = {
.map_meta_equal = bpf_map_meta_equal,
.map_alloc = stack_map_alloc,
@ -664,6 +664,5 @@ const struct bpf_map_ops stack_trace_map_ops = {
.map_update_elem = stack_map_update_elem,
.map_delete_elem = stack_map_delete_elem,
.map_check_btf = map_check_no_btf,
.map_btf_name = "bpf_stack_map",
.map_btf_id = &stack_trace_map_btf_id,
.map_btf_id = &stack_trace_map_btf_ids[0],
};

5
net/core/bpf_sk_storage.c
View file

@ -338,7 +338,7 @@ bpf_sk_storage_ptr(void *owner)
return &sk->sk_bpf_storage;
}
static int sk_storage_map_btf_id;
BTF_ID_LIST_SINGLE(sk_storage_map_btf_ids, struct, bpf_local_storage_map)
const struct bpf_map_ops sk_storage_map_ops = {
.map_meta_equal = bpf_map_meta_equal,
.map_alloc_check = bpf_local_storage_map_alloc_check,
@ -349,8 +349,7 @@ const struct bpf_map_ops sk_storage_map_ops = {
.map_update_elem = bpf_fd_sk_storage_update_elem,
.map_delete_elem = bpf_fd_sk_storage_delete_elem,
.map_check_btf = bpf_local_storage_map_check_btf,
.map_btf_name = "bpf_local_storage_map",
.map_btf_id = &sk_storage_map_btf_id,
.map_btf_id = &sk_storage_map_btf_ids[0],
.map_local_storage_charge = bpf_sk_storage_charge,
.map_local_storage_uncharge = bpf_sk_storage_uncharge,
.map_owner_storage_ptr = bpf_sk_storage_ptr,

10
net/core/sock_map.c
View file

@ -793,7 +793,7 @@ static const struct bpf_iter_seq_info sock_map_iter_seq_info = {
.seq_priv_size = sizeof(struct sock_map_seq_info),
};
static int sock_map_btf_id;
BTF_ID_LIST_SINGLE(sock_map_btf_ids, struct, bpf_stab)
const struct bpf_map_ops sock_map_ops = {
.map_meta_equal = bpf_map_meta_equal,
.map_alloc = sock_map_alloc,
@ -805,8 +805,7 @@ const struct bpf_map_ops sock_map_ops = {
.map_lookup_elem = sock_map_lookup,
.map_release_uref = sock_map_release_progs,
.map_check_btf = map_check_no_btf,
.map_btf_name = "bpf_stab",
.map_btf_id = &sock_map_btf_id,
.map_btf_id = &sock_map_btf_ids[0],
.iter_seq_info = &sock_map_iter_seq_info,
};
@ -1385,7 +1384,7 @@ static const struct bpf_iter_seq_info sock_hash_iter_seq_info = {
.seq_priv_size = sizeof(struct sock_hash_seq_info),
};
static int sock_hash_map_btf_id;
BTF_ID_LIST_SINGLE(sock_hash_map_btf_ids, struct, bpf_shtab)
const struct bpf_map_ops sock_hash_ops = {
.map_meta_equal = bpf_map_meta_equal,
.map_alloc = sock_hash_alloc,
@ -1397,8 +1396,7 @@ const struct bpf_map_ops sock_hash_ops = {
.map_lookup_elem_sys_only = sock_hash_lookup_sys,
.map_release_uref = sock_hash_release_progs,
.map_check_btf = map_check_no_btf,
.map_btf_name = "bpf_shtab",
.map_btf_id = &sock_hash_map_btf_id,
.map_btf_id = &sock_hash_map_btf_ids[0],
.iter_seq_info = &sock_hash_iter_seq_info,
};

6
net/xdp/xskmap.c
View file

@ -9,6 +9,7 @@
#include <net/xdp_sock.h>
#include <linux/slab.h>
#include <linux/sched.h>
#include <linux/btf_ids.h>
#include "xsk.h"
@ -254,7 +255,7 @@ static bool xsk_map_meta_equal(const struct bpf_map *meta0,
bpf_map_meta_equal(meta0, meta1);
}
static int xsk_map_btf_id;
BTF_ID_LIST_SINGLE(xsk_map_btf_ids, struct, xsk_map)
const struct bpf_map_ops xsk_map_ops = {
.map_meta_equal = xsk_map_meta_equal,
.map_alloc = xsk_map_alloc,
@ -266,7 +267,6 @@ const struct bpf_map_ops xsk_map_ops = {
.map_update_elem = xsk_map_update_elem,
.map_delete_elem = xsk_map_delete_elem,
.map_check_btf = map_check_no_btf,
.map_btf_name = "xsk_map",
.map_btf_id = &xsk_map_btf_id,
.map_btf_id = &xsk_map_btf_ids[0],
.map_redirect = xsk_map_redirect,
};