xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

tools: bpftool: allow users to specify program type for prog load

Browse Source 
Sometimes program section names don't match with libbpf's expectation.
In particular XDP's default section names differ between libbpf and
iproute2.  Allow users to pass program type on command line.  Name
the types like the libbpf expected section names.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
This commit is contained in:
Jakub Kicinski
2018-07-10 14:43:00 -07:00
committed by Daniel Borkmann
parent b60df2a0e1
commit 49f2cba3e5
3 changed files with 60 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

44
tools/bpf/bpftool/prog.c
View File

@@ -688,6 +688,7 @@ static int do_load(int argc, char **argv)
const char *objfile, *pinfile;
struct bpf_object *obj;
int prog_fd;
int err;
if (!REQ_ARGS(2))
return -1;
@@ -695,7 +696,37 @@ static int do_load(int argc, char **argv)
pinfile = GET_ARG();
while (argc) {
if (is_prefix(*argv, "dev")) {
if (is_prefix(*argv, "type")) {
char *type;
NEXT_ARG();
if (attr.prog_type != BPF_PROG_TYPE_UNSPEC) {
p_err("program type already specified");
return -1;
}
if (!REQ_ARGS(1))
return -1;
/* Put a '/' at the end of type to appease libbpf */
type = malloc(strlen(*argv) + 2);
if (!type) {
p_err("mem alloc failed");
return -1;
}
*type = 0;
strcat(type, *argv);
strcat(type, "/");
err = libbpf_prog_type_by_name(type, &attr.prog_type,
&attr.expected_attach_type);
free(type);
if (err < 0) {
p_err("unknown program type '%s'", *argv);
return err;
}
NEXT_ARG();
} else if (is_prefix(*argv, "dev")) {
NEXT_ARG();
if (attr.ifindex) {
@@ -713,7 +744,7 @@ static int do_load(int argc, char **argv)
}
NEXT_ARG();
} else {
p_err("expected no more arguments or 'dev', got: '%s'?",
p_err("expected no more arguments, 'type' or 'dev', got: '%s'?",
*argv);
return -1;
}
@@ -753,10 +784,17 @@ static int do_help(int argc, char **argv)
" %s %s dump xlated PROG [{ file FILE | opcodes | visual }]\n"
" %s %s dump jited PROG [{ file FILE | opcodes }]\n"
" %s %s pin PROG FILE\n"
" %s %s load OBJ FILE [dev NAME]\n"
" %s %s load OBJ FILE [type TYPE] [dev NAME]\n"
" %s %s help\n"
"\n"
" " HELP_SPEC_PROGRAM "\n"
" TYPE := { socket | kprobe | kretprobe | classifier | action |\n"
" tracepoint | raw_tracepoint | xdp | perf_event | cgroup/skb |\n"
" cgroup/sock | cgroup/dev | lwt_in | lwt_out | lwt_xmit |\n"
" lwt_seg6local | sockops | sk_skb | sk_msg | lirc_mode2 |\n"
" cgroup/bind4 | cgroup/bind6 | cgroup/post_bind4 |\n"
" cgroup/post_bind6 | cgroup/connect4 | cgroup/connect6 |\n"
" cgroup/sendmsg4 | cgroup/sendmsg6 }\n"
" " HELP_SPEC_OPTIONS "\n"
"",
bin_name, argv[-2], bin_name, argv[-2], bin_name, argv[-2],