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From: Martin KaFai Lau <kafai@fb.com>
To: <netdev@vger.kernel.org>
Cc: Alexei Starovoitov <ast@fb.com>,
	Daniel Borkmann <daniel@iogearbox.net>, <kernel-team@fb.com>
Subject: [PATCH net-next 6/8] bpf: Add jited_len to struct bpf_prog
Date: Tue, 30 May 2017 17:08:35 -0700	[thread overview]
Message-ID: <a664735fbd45a0eda4cded53eb01701b271f9add.1496189155.git.kafai@fb.com> (raw)
In-Reply-To: <cover.1496189155.git.kafai@fb.com>

Add jited_len to struct bpf_prog.  It will be
useful for the struct bpf_prog_info which will
be added in the later patch.

Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Acked-by: Alexei Starovoitov <ast@fb.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
---
 arch/arm64/net/bpf_jit_comp.c     | 1 +
 arch/powerpc/net/bpf_jit_comp64.c | 1 +
 arch/s390/net/bpf_jit_comp.c      | 1 +
 arch/sparc/net/bpf_jit_comp_64.c  | 1 +
 arch/x86/net/bpf_jit_comp.c       | 1 +
 include/linux/filter.h            | 1 +
 6 files changed, 6 insertions(+)

diff --git a/arch/arm64/net/bpf_jit_comp.c b/arch/arm64/net/bpf_jit_comp.c
index 71f930501ade..6b21dccf01e8 100644
--- a/arch/arm64/net/bpf_jit_comp.c
+++ b/arch/arm64/net/bpf_jit_comp.c
@@ -900,6 +900,7 @@ struct bpf_prog *bpf_int_jit_compile(struct bpf_prog *prog)
 	bpf_jit_binary_lock_ro(header);
 	prog->bpf_func = (void *)ctx.image;
 	prog->jited = 1;
+	prog->jited_len = image_size;
 
 out_off:
 	kfree(ctx.offset);
diff --git a/arch/powerpc/net/bpf_jit_comp64.c b/arch/powerpc/net/bpf_jit_comp64.c
index aee2bb817ac6..a3f904cd8b1e 100644
--- a/arch/powerpc/net/bpf_jit_comp64.c
+++ b/arch/powerpc/net/bpf_jit_comp64.c
@@ -1052,6 +1052,7 @@ struct bpf_prog *bpf_int_jit_compile(struct bpf_prog *fp)
 
 	fp->bpf_func = (void *)image;
 	fp->jited = 1;
+	fp->jited_len = alloclen;
 
 	bpf_flush_icache(bpf_hdr, (u8 *)bpf_hdr + (bpf_hdr->pages * PAGE_SIZE));
 
diff --git a/arch/s390/net/bpf_jit_comp.c b/arch/s390/net/bpf_jit_comp.c
index 6e97a2e3fd8d..76b7e9d5d591 100644
--- a/arch/s390/net/bpf_jit_comp.c
+++ b/arch/s390/net/bpf_jit_comp.c
@@ -1329,6 +1329,7 @@ struct bpf_prog *bpf_int_jit_compile(struct bpf_prog *fp)
 	bpf_jit_binary_lock_ro(header);
 	fp->bpf_func = (void *) jit.prg_buf;
 	fp->jited = 1;
+	fp->jited_len = jit.size;
 free_addrs:
 	kfree(jit.addrs);
 out:
diff --git a/arch/sparc/net/bpf_jit_comp_64.c b/arch/sparc/net/bpf_jit_comp_64.c
index 21de77419f48..beb46b14fbbc 100644
--- a/arch/sparc/net/bpf_jit_comp_64.c
+++ b/arch/sparc/net/bpf_jit_comp_64.c
@@ -1555,6 +1555,7 @@ struct bpf_prog *bpf_int_jit_compile(struct bpf_prog *prog)
 
 	prog->bpf_func = (void *)ctx.image;
 	prog->jited = 1;
+	prog->jited_len = image_size;
 
 out_off:
 	kfree(ctx.offset);
diff --git a/arch/x86/net/bpf_jit_comp.c b/arch/x86/net/bpf_jit_comp.c
index f58939393eef..9341030133ae 100644
--- a/arch/x86/net/bpf_jit_comp.c
+++ b/arch/x86/net/bpf_jit_comp.c
@@ -1162,6 +1162,7 @@ struct bpf_prog *bpf_int_jit_compile(struct bpf_prog *prog)
 		bpf_jit_binary_lock_ro(header);
 		prog->bpf_func = (void *)image;
 		prog->jited = 1;
+		prog->jited_len = proglen;
 	} else {
 		prog = orig_prog;
 	}
diff --git a/include/linux/filter.h b/include/linux/filter.h
index 62d948f80730..a322a41f394b 100644
--- a/include/linux/filter.h
+++ b/include/linux/filter.h
@@ -429,6 +429,7 @@ struct bpf_prog {
 	kmemcheck_bitfield_end(meta);
 	enum bpf_prog_type	type;		/* Type of BPF program */
 	u32			len;		/* Number of filter blocks */
+	u32			jited_len;	/* Size of jited insns in bytes */
 	u8			tag[BPF_TAG_SIZE];
 	struct bpf_prog_aux	*aux;		/* Auxiliary fields */
 	struct sock_fprog_kern	*orig_prog;	/* Original BPF program */
-- 
2.9.3

  parent reply	other threads:[~2017-05-31  0:08 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-05-31  0:08 [PATCH net-next 0/8] Introduce bpf ID Martin KaFai Lau
2017-05-31  0:08 ` [PATCH net-next 1/8] bpf: Introduce bpf_prog ID Martin KaFai Lau
2017-05-31  0:08 ` [PATCH net-next 2/8] bpf: Introduce bpf_map ID Martin KaFai Lau
2017-05-31  0:08 ` [PATCH net-next 3/8] bpf: Add BPF_(PROG|MAP)_GET_NEXT_ID command Martin KaFai Lau
2017-05-31  0:08 ` [PATCH net-next 4/8] bpf: Add BPF_PROG_GET_FD_BY_ID Martin KaFai Lau
2017-05-31  3:21   ` kbuild test robot
2017-05-31  0:08 ` [PATCH net-next 5/8] bpf: Add BPF_MAP_GET_FD_BY_ID Martin KaFai Lau
2017-05-31  0:08 ` Martin KaFai Lau [this message]
2017-05-31  0:08 ` [PATCH net-next 7/8] bpf: Add BPF_OBJ_GET_INFO_BY_FD Martin KaFai Lau
2017-05-31  0:08 ` [PATCH net-next 8/8] bpf: Test for bpf ID Martin KaFai Lau
2017-05-31  0:35 ` [PATCH net-next 0/8] Introduce " David Ahern
2017-05-31  4:30   ` Martin KaFai Lau
2017-05-31 18:30 ` David Miller

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