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-rw-r--r--tools/bpf/bpftool/Documentation/bpftool-map.rst8
-rw-r--r--tools/bpf/bpftool/Documentation/bpftool-prog.rst11
-rw-r--r--tools/bpf/bpftool/bash-completion/bpftool7
-rw-r--r--tools/bpf/bpftool/common.c9
-rw-r--r--tools/bpf/bpftool/feature.c24
-rw-r--r--tools/bpf/bpftool/iter.c2
-rw-r--r--tools/bpf/bpftool/link.c16
-rw-r--r--tools/bpf/bpftool/main.h2
-rw-r--r--tools/bpf/bpftool/map.c19
-rw-r--r--tools/bpf/bpftool/prog.c53
-rw-r--r--tools/bpf/bpftool/struct_ops.c2
-rw-r--r--tools/bpf/resolve_btfids/Makefile4
12 files changed, 112 insertions, 45 deletions
diff --git a/tools/bpf/bpftool/Documentation/bpftool-map.rst b/tools/bpf/bpftool/Documentation/bpftool-map.rst
index 11250c4734fe..3b7ba037af95 100644
--- a/tools/bpf/bpftool/Documentation/bpftool-map.rst
+++ b/tools/bpf/bpftool/Documentation/bpftool-map.rst
@@ -28,7 +28,7 @@ MAP COMMANDS
| **bpftool** **map** { **show** | **list** } [*MAP*]
| **bpftool** **map create** *FILE* **type** *TYPE* **key** *KEY_SIZE* **value** *VALUE_SIZE* \
| **entries** *MAX_ENTRIES* **name** *NAME* [**flags** *FLAGS*] [**inner_map** *MAP*] \
-| [**dev** *NAME*]
+| [**offload_dev** *NAME*]
| **bpftool** **map dump** *MAP*
| **bpftool** **map update** *MAP* [**key** *DATA*] [**value** *VALUE*] [*UPDATE_FLAGS*]
| **bpftool** **map lookup** *MAP* [**key** *DATA*]
@@ -73,7 +73,7 @@ DESCRIPTION
maps. On such kernels bpftool will automatically emit this
information as well.
- **bpftool map create** *FILE* **type** *TYPE* **key** *KEY_SIZE* **value** *VALUE_SIZE* **entries** *MAX_ENTRIES* **name** *NAME* [**flags** *FLAGS*] [**inner_map** *MAP*] [**dev** *NAME*]
+ **bpftool map create** *FILE* **type** *TYPE* **key** *KEY_SIZE* **value** *VALUE_SIZE* **entries** *MAX_ENTRIES* **name** *NAME* [**flags** *FLAGS*] [**inner_map** *MAP*] [**offload_dev** *NAME*]
Create a new map with given parameters and pin it to *bpffs*
as *FILE*.
@@ -86,8 +86,8 @@ DESCRIPTION
kernel needs it to collect metadata related to the inner maps
that the new map will work with.
- Keyword **dev** expects a network interface name, and is used
- to request hardware offload for the map.
+ Keyword **offload_dev** expects a network interface name,
+ and is used to request hardware offload for the map.
**bpftool map dump** *MAP*
Dump all entries in a given *MAP*. In case of **name**,
diff --git a/tools/bpf/bpftool/Documentation/bpftool-prog.rst b/tools/bpf/bpftool/Documentation/bpftool-prog.rst
index 9443c524bb76..dcae81bd27ed 100644
--- a/tools/bpf/bpftool/Documentation/bpftool-prog.rst
+++ b/tools/bpf/bpftool/Documentation/bpftool-prog.rst
@@ -31,7 +31,7 @@ PROG COMMANDS
| **bpftool** **prog dump xlated** *PROG* [{ **file** *FILE* | [**opcodes**] [**linum**] [**visual**] }]
| **bpftool** **prog dump jited** *PROG* [{ **file** *FILE* | [**opcodes**] [**linum**] }]
| **bpftool** **prog pin** *PROG* *FILE*
-| **bpftool** **prog** { **load** | **loadall** } *OBJ* *PATH* [**type** *TYPE*] [**map** {**idx** *IDX* | **name** *NAME*} *MAP*] [**dev** *NAME*] [**pinmaps** *MAP_DIR*] [**autoattach**]
+| **bpftool** **prog** { **load** | **loadall** } *OBJ* *PATH* [**type** *TYPE*] [**map** { **idx** *IDX* | **name** *NAME* } *MAP*] [{ **offload_dev** | **xdpmeta_dev** } *NAME*] [**pinmaps** *MAP_DIR*] [**autoattach**]
| **bpftool** **prog attach** *PROG* *ATTACH_TYPE* [*MAP*]
| **bpftool** **prog detach** *PROG* *ATTACH_TYPE* [*MAP*]
| **bpftool** **prog tracelog**
@@ -129,7 +129,7 @@ DESCRIPTION
contain a dot character ('.'), which is reserved for future
extensions of *bpffs*.
- **bpftool prog { load | loadall }** *OBJ* *PATH* [**type** *TYPE*] [**map** {**idx** *IDX* | **name** *NAME*} *MAP*] [**dev** *NAME*] [**pinmaps** *MAP_DIR*] [**autoattach**]
+ **bpftool prog { load | loadall }** *OBJ* *PATH* [**type** *TYPE*] [**map** { **idx** *IDX* | **name** *NAME* } *MAP*] [{ **offload_dev** | **xdpmeta_dev** } *NAME*] [**pinmaps** *MAP_DIR*] [**autoattach**]
Load bpf program(s) from binary *OBJ* and pin as *PATH*.
**bpftool prog load** pins only the first program from the
*OBJ* as *PATH*. **bpftool prog loadall** pins all programs
@@ -143,8 +143,11 @@ DESCRIPTION
to be replaced in the ELF file counting from 0, while *NAME*
allows to replace a map by name. *MAP* specifies the map to
use, referring to it by **id** or through a **pinned** file.
- If **dev** *NAME* is specified program will be loaded onto
- given networking device (offload).
+ If **offload_dev** *NAME* is specified program will be loaded
+ onto given networking device (offload).
+ If **xdpmeta_dev** *NAME* is specified program will become
+ device-bound without offloading, this facilitates access
+ to XDP metadata.
Optional **pinmaps** argument can be provided to pin all
maps under *MAP_DIR* directory.
diff --git a/tools/bpf/bpftool/bash-completion/bpftool b/tools/bpf/bpftool/bash-completion/bpftool
index e7234d1a5306..085bf18f3659 100644
--- a/tools/bpf/bpftool/bash-completion/bpftool
+++ b/tools/bpf/bpftool/bash-completion/bpftool
@@ -278,7 +278,7 @@ _bpftool()
_bpftool_get_prog_tags
return 0
;;
- dev)
+ dev|offload_dev|xdpmeta_dev)
_sysfs_get_netdevs
return 0
;;
@@ -508,7 +508,8 @@ _bpftool()
;;
*)
COMPREPLY=( $( compgen -W "map" -- "$cur" ) )
- _bpftool_once_attr 'type dev pinmaps autoattach'
+ _bpftool_once_attr 'type pinmaps autoattach'
+ _bpftool_one_of_list 'offload_dev xdpmeta_dev'
return 0
;;
esac
@@ -733,7 +734,7 @@ _bpftool()
esac
;;
*)
- _bpftool_once_attr 'type key value entries name flags dev'
+ _bpftool_once_attr 'type key value entries name flags offload_dev'
if _bpftool_search_list 'array_of_maps' 'hash_of_maps'; then
_bpftool_once_attr 'inner_map'
fi
diff --git a/tools/bpf/bpftool/common.c b/tools/bpf/bpftool/common.c
index 1360c82ae732..cc6e6aae2447 100644
--- a/tools/bpf/bpftool/common.c
+++ b/tools/bpf/bpftool/common.c
@@ -68,7 +68,7 @@ void p_info(const char *fmt, ...)
va_end(ap);
}
-static bool is_bpffs(char *path)
+static bool is_bpffs(const char *path)
{
struct statfs st_fs;
@@ -244,13 +244,16 @@ int open_obj_pinned_any(const char *path, enum bpf_obj_type exp_type)
return fd;
}
-int mount_bpffs_for_pin(const char *name)
+int mount_bpffs_for_pin(const char *name, bool is_dir)
{
char err_str[ERR_MAX_LEN];
char *file;
char *dir;
int err = 0;
+ if (is_dir && is_bpffs(name))
+ return err;
+
file = malloc(strlen(name) + 1);
if (!file) {
p_err("mem alloc failed");
@@ -286,7 +289,7 @@ int do_pin_fd(int fd, const char *name)
{
int err;
- err = mount_bpffs_for_pin(name);
+ err = mount_bpffs_for_pin(name, false);
if (err)
return err;
diff --git a/tools/bpf/bpftool/feature.c b/tools/bpf/bpftool/feature.c
index da16e6a27ccc..0675d6a46413 100644
--- a/tools/bpf/bpftool/feature.c
+++ b/tools/bpf/bpftool/feature.c
@@ -167,12 +167,12 @@ static int get_vendor_id(int ifindex)
return strtol(buf, NULL, 0);
}
-static int read_procfs(const char *path)
+static long read_procfs(const char *path)
{
char *endptr, *line = NULL;
size_t len = 0;
FILE *fd;
- int res;
+ long res;
fd = fopen(path, "r");
if (!fd)
@@ -194,7 +194,7 @@ static int read_procfs(const char *path)
static void probe_unprivileged_disabled(void)
{
- int res;
+ long res;
/* No support for C-style ouptut */
@@ -216,14 +216,14 @@ static void probe_unprivileged_disabled(void)
printf("Unable to retrieve required privileges for bpf() syscall\n");
break;
default:
- printf("bpf() syscall restriction has unknown value %d\n", res);
+ printf("bpf() syscall restriction has unknown value %ld\n", res);
}
}
}
static void probe_jit_enable(void)
{
- int res;
+ long res;
/* No support for C-style ouptut */
@@ -245,7 +245,7 @@ static void probe_jit_enable(void)
printf("Unable to retrieve JIT-compiler status\n");
break;
default:
- printf("JIT-compiler status has unknown value %d\n",
+ printf("JIT-compiler status has unknown value %ld\n",
res);
}
}
@@ -253,7 +253,7 @@ static void probe_jit_enable(void)
static void probe_jit_harden(void)
{
- int res;
+ long res;
/* No support for C-style ouptut */
@@ -275,7 +275,7 @@ static void probe_jit_harden(void)
printf("Unable to retrieve JIT hardening status\n");
break;
default:
- printf("JIT hardening status has unknown value %d\n",
+ printf("JIT hardening status has unknown value %ld\n",
res);
}
}
@@ -283,7 +283,7 @@ static void probe_jit_harden(void)
static void probe_jit_kallsyms(void)
{
- int res;
+ long res;
/* No support for C-style ouptut */
@@ -302,14 +302,14 @@ static void probe_jit_kallsyms(void)
printf("Unable to retrieve JIT kallsyms export status\n");
break;
default:
- printf("JIT kallsyms exports status has unknown value %d\n", res);
+ printf("JIT kallsyms exports status has unknown value %ld\n", res);
}
}
}
static void probe_jit_limit(void)
{
- int res;
+ long res;
/* No support for C-style ouptut */
@@ -322,7 +322,7 @@ static void probe_jit_limit(void)
printf("Unable to retrieve global memory limit for JIT compiler for unprivileged users\n");
break;
default:
- printf("Global memory limit for JIT compiler for unprivileged users is %d bytes\n", res);
+ printf("Global memory limit for JIT compiler for unprivileged users is %ld bytes\n", res);
}
}
}
diff --git a/tools/bpf/bpftool/iter.c b/tools/bpf/bpftool/iter.c
index 9a1d2365a297..6b0e5202ca7a 100644
--- a/tools/bpf/bpftool/iter.c
+++ b/tools/bpf/bpftool/iter.c
@@ -76,7 +76,7 @@ static int do_pin(int argc, char **argv)
goto close_obj;
}
- err = mount_bpffs_for_pin(path);
+ err = mount_bpffs_for_pin(path, false);
if (err)
goto close_link;
diff --git a/tools/bpf/bpftool/link.c b/tools/bpf/bpftool/link.c
index d98dbc50cf4c..2d786072ed0d 100644
--- a/tools/bpf/bpftool/link.c
+++ b/tools/bpf/bpftool/link.c
@@ -195,6 +195,8 @@ static int show_link_close_json(int fd, struct bpf_link_info *info)
show_link_attach_type_json(info->tracing.attach_type,
json_wtr);
+ jsonw_uint_field(json_wtr, "target_obj_id", info->tracing.target_obj_id);
+ jsonw_uint_field(json_wtr, "target_btf_id", info->tracing.target_btf_id);
break;
case BPF_LINK_TYPE_CGROUP:
jsonw_lluint_field(json_wtr, "cgroup_id",
@@ -212,7 +214,10 @@ static int show_link_close_json(int fd, struct bpf_link_info *info)
case BPF_LINK_TYPE_NETFILTER:
netfilter_dump_json(info, json_wtr);
break;
-
+ case BPF_LINK_TYPE_STRUCT_OPS:
+ jsonw_uint_field(json_wtr, "map_id",
+ info->struct_ops.map_id);
+ break;
default:
break;
}
@@ -245,7 +250,10 @@ static void show_link_header_plain(struct bpf_link_info *info)
else
printf("type %u ", info->type);
- printf("prog %u ", info->prog_id);
+ if (info->type == BPF_LINK_TYPE_STRUCT_OPS)
+ printf("map %u ", info->struct_ops.map_id);
+ else
+ printf("prog %u ", info->prog_id);
}
static void show_link_attach_type_plain(__u32 attach_type)
@@ -369,6 +377,10 @@ static int show_link_close_plain(int fd, struct bpf_link_info *info)
printf("\n\tprog_type %u ", prog_info.type);
show_link_attach_type_plain(info->tracing.attach_type);
+ if (info->tracing.target_obj_id || info->tracing.target_btf_id)
+ printf("\n\ttarget_obj_id %u target_btf_id %u ",
+ info->tracing.target_obj_id,
+ info->tracing.target_btf_id);
break;
case BPF_LINK_TYPE_CGROUP:
printf("\n\tcgroup_id %zu ", (size_t)info->cgroup.cgroup_id);
diff --git a/tools/bpf/bpftool/main.h b/tools/bpf/bpftool/main.h
index a49534d7eafa..b8bb08d10dec 100644
--- a/tools/bpf/bpftool/main.h
+++ b/tools/bpf/bpftool/main.h
@@ -142,7 +142,7 @@ const char *get_fd_type_name(enum bpf_obj_type type);
char *get_fdinfo(int fd, const char *key);
int open_obj_pinned(const char *path, bool quiet);
int open_obj_pinned_any(const char *path, enum bpf_obj_type exp_type);
-int mount_bpffs_for_pin(const char *name);
+int mount_bpffs_for_pin(const char *name, bool is_dir);
int do_pin_any(int argc, char **argv, int (*get_fd_by_id)(int *, char ***));
int do_pin_fd(int fd, const char *name);
diff --git a/tools/bpf/bpftool/map.c b/tools/bpf/bpftool/map.c
index aaeb8939e137..f98f7bbea2b1 100644
--- a/tools/bpf/bpftool/map.c
+++ b/tools/bpf/bpftool/map.c
@@ -139,6 +139,9 @@ static void print_entry_json(struct bpf_map_info *info, unsigned char *key,
print_hex_data_json(key, info->key_size);
jsonw_name(json_wtr, "value");
print_hex_data_json(value, info->value_size);
+ if (map_is_map_of_maps(info->type))
+ jsonw_uint_field(json_wtr, "inner_map_id",
+ *(unsigned int *)value);
if (btf) {
struct btf_dumper d = {
.btf = btf,
@@ -259,8 +262,13 @@ static void print_entry_plain(struct bpf_map_info *info, unsigned char *key,
}
if (info->value_size) {
- printf("value:%c", break_names ? '\n' : ' ');
- fprint_hex(stdout, value, info->value_size, " ");
+ if (map_is_map_of_maps(info->type)) {
+ printf("inner_map_id:%c", break_names ? '\n' : ' ');
+ printf("%u ", *(unsigned int *)value);
+ } else {
+ printf("value:%c", break_names ? '\n' : ' ');
+ fprint_hex(stdout, value, info->value_size, " ");
+ }
}
printf("\n");
@@ -1279,6 +1287,11 @@ static int do_create(int argc, char **argv)
"flags"))
goto exit;
} else if (is_prefix(*argv, "dev")) {
+ p_info("Warning: 'bpftool map create [...] dev <ifname>' syntax is deprecated.\n"
+ "Going further, please use 'offload_dev <ifname>' to request hardware offload for the map.");
+ goto offload_dev;
+ } else if (is_prefix(*argv, "offload_dev")) {
+offload_dev:
NEXT_ARG();
if (attr.map_ifindex) {
@@ -1423,7 +1436,7 @@ static int do_help(int argc, char **argv)
"Usage: %1$s %2$s { show | list } [MAP]\n"
" %1$s %2$s create FILE type TYPE key KEY_SIZE value VALUE_SIZE \\\n"
" entries MAX_ENTRIES name NAME [flags FLAGS] \\\n"
- " [inner_map MAP] [dev NAME]\n"
+ " [inner_map MAP] [offload_dev NAME]\n"
" %1$s %2$s dump MAP\n"
" %1$s %2$s update MAP [key DATA] [value VALUE] [UPDATE_FLAGS]\n"
" %1$s %2$s lookup MAP [key DATA]\n"
diff --git a/tools/bpf/bpftool/prog.c b/tools/bpf/bpftool/prog.c
index 91b6075b2db3..8443a149dd17 100644
--- a/tools/bpf/bpftool/prog.c
+++ b/tools/bpf/bpftool/prog.c
@@ -1517,12 +1517,13 @@ static int load_with_options(int argc, char **argv, bool first_prog_only)
struct bpf_program *prog = NULL, *pos;
unsigned int old_map_fds = 0;
const char *pinmaps = NULL;
+ __u32 xdpmeta_ifindex = 0;
+ __u32 offload_ifindex = 0;
bool auto_attach = false;
struct bpf_object *obj;
struct bpf_map *map;
const char *pinfile;
unsigned int i, j;
- __u32 ifindex = 0;
const char *file;
int idx, err;
@@ -1614,17 +1615,46 @@ static int load_with_options(int argc, char **argv, bool first_prog_only)
map_replace[old_map_fds].fd = fd;
old_map_fds++;
} else if (is_prefix(*argv, "dev")) {
+ p_info("Warning: 'bpftool prog load [...] dev <ifname>' syntax is deprecated.\n"
+ "Going further, please use 'offload_dev <ifname>' to offload program to device.\n"
+ "For applications using XDP hints only, use 'xdpmeta_dev <ifname>'.");
+ goto offload_dev;
+ } else if (is_prefix(*argv, "offload_dev")) {
+offload_dev:
NEXT_ARG();
- if (ifindex) {
- p_err("offload device already specified");
+ if (offload_ifindex) {
+ p_err("offload_dev already specified");
+ goto err_free_reuse_maps;
+ } else if (xdpmeta_ifindex) {
+ p_err("xdpmeta_dev and offload_dev are mutually exclusive");
+ goto err_free_reuse_maps;
+ }
+ if (!REQ_ARGS(1))
+ goto err_free_reuse_maps;
+
+ offload_ifindex = if_nametoindex(*argv);
+ if (!offload_ifindex) {
+ p_err("unrecognized netdevice '%s': %s",
+ *argv, strerror(errno));
+ goto err_free_reuse_maps;
+ }
+ NEXT_ARG();
+ } else if (is_prefix(*argv, "xdpmeta_dev")) {
+ NEXT_ARG();
+
+ if (xdpmeta_ifindex) {
+ p_err("xdpmeta_dev already specified");
+ goto err_free_reuse_maps;
+ } else if (offload_ifindex) {
+ p_err("xdpmeta_dev and offload_dev are mutually exclusive");
goto err_free_reuse_maps;
}
if (!REQ_ARGS(1))
goto err_free_reuse_maps;
- ifindex = if_nametoindex(*argv);
- if (!ifindex) {
+ xdpmeta_ifindex = if_nametoindex(*argv);
+ if (!xdpmeta_ifindex) {
p_err("unrecognized netdevice '%s': %s",
*argv, strerror(errno));
goto err_free_reuse_maps;
@@ -1671,7 +1701,12 @@ static int load_with_options(int argc, char **argv, bool first_prog_only)
goto err_close_obj;
}
- bpf_program__set_ifindex(pos, ifindex);
+ if (prog_type == BPF_PROG_TYPE_XDP && xdpmeta_ifindex) {
+ bpf_program__set_flags(pos, BPF_F_XDP_DEV_BOUND_ONLY);
+ bpf_program__set_ifindex(pos, xdpmeta_ifindex);
+ } else {
+ bpf_program__set_ifindex(pos, offload_ifindex);
+ }
if (bpf_program__type(pos) != prog_type)
bpf_program__set_type(pos, prog_type);
bpf_program__set_expected_attach_type(pos, expected_attach_type);
@@ -1709,7 +1744,7 @@ static int load_with_options(int argc, char **argv, bool first_prog_only)
idx = 0;
bpf_object__for_each_map(map, obj) {
if (bpf_map__type(map) != BPF_MAP_TYPE_PERF_EVENT_ARRAY)
- bpf_map__set_ifindex(map, ifindex);
+ bpf_map__set_ifindex(map, offload_ifindex);
if (j < old_map_fds && idx == map_replace[j].idx) {
err = bpf_map__reuse_fd(map, map_replace[j++].fd);
@@ -1739,7 +1774,7 @@ static int load_with_options(int argc, char **argv, bool first_prog_only)
goto err_close_obj;
}
- err = mount_bpffs_for_pin(pinfile);
+ err = mount_bpffs_for_pin(pinfile, !first_prog_only);
if (err)
goto err_close_obj;
@@ -2416,7 +2451,7 @@ static int do_help(int argc, char **argv)
" %1$s %2$s dump jited PROG [{ file FILE | [opcodes] [linum] }]\n"
" %1$s %2$s pin PROG FILE\n"
" %1$s %2$s { load | loadall } OBJ PATH \\\n"
- " [type TYPE] [dev NAME] \\\n"
+ " [type TYPE] [{ offload_dev | xdpmeta_dev } NAME] \\\n"
" [map { idx IDX | name NAME } MAP]\\\n"
" [pinmaps MAP_DIR]\n"
" [autoattach]\n"
diff --git a/tools/bpf/bpftool/struct_ops.c b/tools/bpf/bpftool/struct_ops.c
index 57c3da70aa31..3ebc9fe91e0e 100644
--- a/tools/bpf/bpftool/struct_ops.c
+++ b/tools/bpf/bpftool/struct_ops.c
@@ -509,7 +509,7 @@ static int do_register(int argc, char **argv)
if (argc == 1)
linkdir = GET_ARG();
- if (linkdir && mount_bpffs_for_pin(linkdir)) {
+ if (linkdir && mount_bpffs_for_pin(linkdir, true)) {
p_err("can't mount bpffs for pinning");
return -1;
}
diff --git a/tools/bpf/resolve_btfids/Makefile b/tools/bpf/resolve_btfids/Makefile
index ac548a7baa73..4b8079f294f6 100644
--- a/tools/bpf/resolve_btfids/Makefile
+++ b/tools/bpf/resolve_btfids/Makefile
@@ -67,7 +67,7 @@ $(BPFOBJ): $(wildcard $(LIBBPF_SRC)/*.[ch] $(LIBBPF_SRC)/Makefile) | $(LIBBPF_OU
LIBELF_FLAGS := $(shell $(HOSTPKG_CONFIG) libelf --cflags 2>/dev/null)
LIBELF_LIBS := $(shell $(HOSTPKG_CONFIG) libelf --libs 2>/dev/null || echo -lelf)
-HOSTCFLAGS += -g \
+HOSTCFLAGS_resolve_btfids += -g \
-I$(srctree)/tools/include \
-I$(srctree)/tools/include/uapi \
-I$(LIBBPF_INCLUDE) \
@@ -76,7 +76,7 @@ HOSTCFLAGS += -g \
LIBS = $(LIBELF_LIBS) -lz
-export srctree OUTPUT HOSTCFLAGS Q HOSTCC HOSTLD HOSTAR
+export srctree OUTPUT HOSTCFLAGS_resolve_btfids Q HOSTCC HOSTLD HOSTAR
include $(srctree)/tools/build/Makefile.include
$(BINARY_IN): fixdep FORCE prepare | $(OUTPUT)
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