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From: Kumar Kartikeya Dwivedi <memxor@gmail.com>
To: bpf@vger.kernel.org
Cc: "Kumar Kartikeya Dwivedi" <memxor@gmail.com>,
	"Alexei Starovoitov" <ast@kernel.org>,
	"Daniel Borkmann" <daniel@iogearbox.net>,
	"Andrii Nakryiko" <andrii@kernel.org>,
	"Martin KaFai Lau" <kafai@fb.com>,
	"Song Liu" <songliubraving@fb.com>, "Yonghong Song" <yhs@fb.com>,
	"Jesper Dangaard Brouer" <brouer@redhat.com>,
	"Toke Høiland-Jørgensen" <toke@redhat.com>,
	netdev@vger.kernel.org
Subject: [PATCH bpf-next v4 09/11] tools: bpftool: Add separate fd_array map support for light skeleton
Date: Mon, 20 Sep 2021 19:45:24 +0530	[thread overview]
Message-ID: <20210920141526.3940002-10-memxor@gmail.com> (raw)
In-Reply-To: <20210920141526.3940002-1-memxor@gmail.com>

This prepares bpftool to pass fd_array_sz parameter, so that the map can
be created by bpf_load_and_run function to hold map and BTF fds.
---
 tools/bpf/bpftool/gen.c  | 3 ++-
 tools/bpf/bpftool/prog.c | 1 +
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/tools/bpf/bpftool/gen.c b/tools/bpf/bpftool/gen.c
index e3ec47a6a612..5bd3650956a4 100644
--- a/tools/bpf/bpftool/gen.c
+++ b/tools/bpf/bpftool/gen.c
@@ -532,10 +532,11 @@ static int gen_trace(struct bpf_object *obj, const char *obj_name, const char *h
 
 	codegen("\
 		\n\
+			opts.fd_array_sz = %d;				    \n\
 			opts.insns_sz = %d;				    \n\
 			opts.insns = (void *)\"\\			    \n\
 		",
-		opts.insns_sz);
+		opts.fd_array_sz, opts.insns_sz);
 	print_hex(opts.insns, opts.insns_sz);
 	codegen("\
 		\n\
diff --git a/tools/bpf/bpftool/prog.c b/tools/bpf/bpftool/prog.c
index 9c3e343b7d87..1d6286d727f4 100644
--- a/tools/bpf/bpftool/prog.c
+++ b/tools/bpf/bpftool/prog.c
@@ -1693,6 +1693,7 @@ static int try_loader(struct gen_loader_opts *gen)
 	opts.data_sz = gen->data_sz;
 	opts.insns = gen->insns;
 	opts.insns_sz = gen->insns_sz;
+	opts.fd_array_sz = gen->fd_array_sz;
 	fds_before = count_open_fds();
 	err = bpf_load_and_run(&opts);
 	fd_delta = count_open_fds() - fds_before;
-- 
2.33.0


  parent reply	other threads:[~2021-09-20 14:16 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-20 14:15 [PATCH bpf-next v4 00/11] Support kernel module function calls from eBPF Kumar Kartikeya Dwivedi
2021-09-20 14:15 ` [PATCH bpf-next v4 01/11] bpf: Introduce BPF support for kernel module function calls Kumar Kartikeya Dwivedi
2021-09-20 14:15 ` [PATCH bpf-next v4 02/11] bpf: Be conservative while processing invalid kfunc calls Kumar Kartikeya Dwivedi
2021-09-20 14:15 ` [PATCH bpf-next v4 03/11] bpf: btf: Introduce helpers for dynamic BTF set registration Kumar Kartikeya Dwivedi
2021-09-20 14:15 ` [PATCH bpf-next v4 04/11] tools: Allow specifying base BTF file in resolve_btfids Kumar Kartikeya Dwivedi
2021-09-20 14:15 ` [PATCH bpf-next v4 05/11] bpf: Enable TCP congestion control kfunc from modules Kumar Kartikeya Dwivedi
2021-09-21 22:18   ` Andrii Nakryiko
2021-09-21 22:23     ` Kumar Kartikeya Dwivedi
2021-09-21 23:02       ` Andrii Nakryiko
2021-09-20 14:15 ` [PATCH bpf-next v4 06/11] libbpf: Support kernel module function calls Kumar Kartikeya Dwivedi
2021-09-21 22:41   ` Andrii Nakryiko
2021-09-24 23:54     ` Kumar Kartikeya Dwivedi
2021-09-25  0:30       ` Andrii Nakryiko
2021-09-20 14:15 ` [PATCH bpf-next v4 07/11] libbpf: Resolve invalid weak kfunc calls with imm = 0, off = 0 Kumar Kartikeya Dwivedi
2021-09-21 22:47   ` Andrii Nakryiko
2021-09-20 14:15 ` [PATCH bpf-next v4 08/11] libbpf: Update gen_loader to emit BTF_KIND_FUNC relocations Kumar Kartikeya Dwivedi
2021-09-21  0:57   ` Alexei Starovoitov
2021-09-21  4:50     ` Kumar Kartikeya Dwivedi
2021-09-21 19:04       ` Alexei Starovoitov
2021-09-21 22:25         ` Kumar Kartikeya Dwivedi
2021-09-20 14:15 ` Kumar Kartikeya Dwivedi [this message]
2021-09-20 14:15 ` [PATCH bpf-next v4 10/11] libbpf: Fix skel_internal.h to set errno on loader retval < 0 Kumar Kartikeya Dwivedi
2021-09-20 14:15 ` [PATCH bpf-next v4 11/11] bpf: selftests: Add selftests for module kfunc support Kumar Kartikeya Dwivedi
2021-09-21 23:00   ` Andrii Nakryiko
2021-09-21 23:13     ` Kumar Kartikeya Dwivedi
2021-09-21 23:28       ` Kumar Kartikeya Dwivedi
2021-09-22  0:03       ` Andrii Nakryiko
2021-09-22  6:06         ` Kumar Kartikeya Dwivedi
2021-09-22 18:24           ` Alexei Starovoitov
2021-09-21  0:29 ` [PATCH bpf-next v4 00/11] Support kernel module function calls from eBPF Andrii Nakryiko
2021-09-21  4:55   ` Kumar Kartikeya Dwivedi

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