Commit f2f742f4 authored by Daniel Borkmann's avatar Daniel Borkmann

Merge branch 'bpf-various-improvements'

Jakub Kicinski says:

====================
This series combines a number of random improvements ranging from
libbpf to nfp driver.  NFP patches make better use of the verifier
log.  There is a requested adjustment to the map offload code, and
a warning fix for a W=1 build to the disassembler.  Quentin also
fixes the libbpf program type detection, while Jiong allows the use
of libbfd compiled from source.
====================
Signed-off-by: default avatarDaniel Borkmann <daniel@iogearbox.net>
parents 4c38f74c 74801e50
......@@ -2907,6 +2907,11 @@ void nfp_bpf_jit_prepare(struct nfp_prog *nfp_prog, unsigned int cnt)
}
}
bool nfp_bpf_supported_opcode(u8 code)
{
return !!instr_cb[code];
}
void *nfp_bpf_relo_for_vnic(struct nfp_prog *nfp_prog, struct nfp_bpf_vnic *bv)
{
unsigned int i;
......
......@@ -324,6 +324,7 @@ struct nfp_bpf_vnic {
void nfp_bpf_jit_prepare(struct nfp_prog *nfp_prog, unsigned int cnt);
int nfp_bpf_jit(struct nfp_prog *prog);
bool nfp_bpf_supported_opcode(u8 code);
extern const struct bpf_prog_offload_ops nfp_bpf_analyzer_ops;
......
......@@ -132,22 +132,24 @@ nfp_bpf_check_call(struct nfp_prog *nfp_prog, struct bpf_verifier_env *env,
case BPF_FUNC_map_lookup_elem:
if (!bpf->helpers.map_lookup) {
pr_info("map_lookup: not supported by FW\n");
pr_vlog(env, "map_lookup: not supported by FW\n");
return -EOPNOTSUPP;
}
if (reg2->type != PTR_TO_STACK) {
pr_info("map_lookup: unsupported key ptr type %d\n",
pr_vlog(env,
"map_lookup: unsupported key ptr type %d\n",
reg2->type);
return -EOPNOTSUPP;
}
if (!tnum_is_const(reg2->var_off)) {
pr_info("map_lookup: variable key pointer\n");
pr_vlog(env, "map_lookup: variable key pointer\n");
return -EOPNOTSUPP;
}
off = reg2->var_off.value + reg2->off;
if (-off % 4) {
pr_info("map_lookup: unaligned stack pointer %lld\n",
pr_vlog(env,
"map_lookup: unaligned stack pointer %lld\n",
-off);
return -EOPNOTSUPP;
}
......@@ -160,7 +162,7 @@ nfp_bpf_check_call(struct nfp_prog *nfp_prog, struct bpf_verifier_env *env,
meta->arg2_var_off |= off != old_off;
if (meta->arg1.map_ptr != reg1->map_ptr) {
pr_info("map_lookup: called for different map\n");
pr_vlog(env, "map_lookup: called for different map\n");
return -EOPNOTSUPP;
}
break;
......@@ -263,7 +265,7 @@ nfp_bpf_check_ptr(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta,
if (reg->type == PTR_TO_MAP_VALUE) {
if (is_mbpf_store(meta)) {
pr_info("map writes not supported\n");
pr_vlog(env, "map writes not supported\n");
return -EOPNOTSUPP;
}
}
......@@ -288,6 +290,12 @@ nfp_verify_insn(struct bpf_verifier_env *env, int insn_idx, int prev_insn_idx)
meta = nfp_bpf_goto_meta(nfp_prog, meta, insn_idx, env->prog->len);
nfp_prog->verifier_meta = meta;
if (!nfp_bpf_supported_opcode(meta->insn.code)) {
pr_vlog(env, "instruction %#02x not supported\n",
meta->insn.code);
return -EINVAL;
}
if (meta->insn.src_reg >= MAX_BPF_REG ||
meta->insn.dst_reg >= MAX_BPF_REG) {
pr_vlog(env, "program uses extended registers - jit hardening?\n");
......
......@@ -29,8 +29,8 @@ extern const char *const bpf_class_string[8];
const char *func_id_name(int id);
typedef void (*bpf_insn_print_t)(struct bpf_verifier_env *env,
const char *, ...);
typedef __printf(2, 3) void (*bpf_insn_print_t)(struct bpf_verifier_env *env,
const char *, ...);
typedef const char *(*bpf_insn_revmap_call_t)(void *private_data,
const struct bpf_insn *insn);
typedef const char *(*bpf_insn_print_imm_t)(void *private_data,
......
......@@ -395,10 +395,8 @@ bool bpf_offload_dev_match(struct bpf_prog *prog, struct bpf_map *map)
struct bpf_prog_offload *offload;
bool ret;
if (!!bpf_prog_is_dev_bound(prog->aux) != !!bpf_map_is_dev_bound(map))
if (!bpf_prog_is_dev_bound(prog->aux) || !bpf_map_is_dev_bound(map))
return false;
if (!bpf_prog_is_dev_bound(prog->aux))
return true;
down_read(&bpf_devs_lock);
offload = prog->aux->offload;
......
......@@ -39,7 +39,7 @@ CC = gcc
CFLAGS += -O2
CFLAGS += -W -Wall -Wextra -Wno-unused-parameter -Wshadow
CFLAGS += -D__EXPORTED_HEADERS__ -I$(srctree)/tools/include/uapi -I$(srctree)/tools/include -I$(srctree)/tools/lib/bpf -I$(srctree)/kernel/bpf/
CFLAGS += -DPACKAGE='"bpftool"' -D__EXPORTED_HEADERS__ -I$(srctree)/tools/include/uapi -I$(srctree)/tools/include -I$(srctree)/tools/lib/bpf -I$(srctree)/kernel/bpf/
CFLAGS += -DBPFTOOL_VERSION='"$(BPFTOOL_VERSION)"'
LIBS = -lelf -lbfd -lopcodes $(LIBBPF)
......
......@@ -190,7 +190,7 @@ $(OUTPUT)test-libbfd.bin:
$(BUILD) -DPACKAGE='"perf"' -lbfd -lz -liberty -ldl
$(OUTPUT)test-disassembler-four-args.bin:
$(BUILD) -lbfd -lopcodes
$(BUILD) -DPACKAGE='"perf"' -lbfd -lopcodes
$(OUTPUT)test-liberty.bin:
$(CC) $(CFLAGS) -Wall -Werror -o $@ test-libbfd.c -DPACKAGE='"perf"' $(LDFLAGS) -lbfd -ldl -liberty
......
......@@ -1803,7 +1803,7 @@ BPF_PROG_TYPE_FNS(tracepoint, BPF_PROG_TYPE_TRACEPOINT);
BPF_PROG_TYPE_FNS(xdp, BPF_PROG_TYPE_XDP);
BPF_PROG_TYPE_FNS(perf_event, BPF_PROG_TYPE_PERF_EVENT);
#define BPF_PROG_SEC(string, type) { string, sizeof(string), type }
#define BPF_PROG_SEC(string, type) { string, sizeof(string) - 1, type }
static const struct {
const char *sec;
size_t len;
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment