bpf: Add jited_len to struct bpf_prog

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>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/arch/arm64/net/bpf_jit_comp.c b/arch/arm64/net/bpf_jit_comp.c
index b1d38ee..4f95873 100644 (file)
--- 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 a013665..861c5af 100644 (file)
--- 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 42ad383..01c6fbc 100644 (file)
--- 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 098874a..8799ae9 100644 (file)
--- a/arch/sparc/net/bpf_jit_comp_64.c
+++ b/arch/sparc/net/bpf_jit_comp_64.c
@@ -1560,6 +1560,7 @@ 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 617eac9..e1324f2 100644 (file)
--- a/arch/x86/net/bpf_jit_comp.c
+++ b/arch/x86/net/bpf_jit_comp.c
@@ -1167,6 +1167,7 @@ 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 a20ba40..1e2dddf 100644 (file)
--- a/include/linux/filter.h
+++ b/include/linux/filter.h
@@ -432,6 +432,7 @@ 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 */