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Message-Id: <1406777656-27755-5-git-send-email-ast@plumgrid.com>
Date: Wed, 30 Jul 2014 20:34:15 -0700
From: Alexei Starovoitov <ast@...mgrid.com>
To: "David S. Miller" <davem@...emloft.net>
Cc: Daniel Borkmann <dborkman@...hat.com>,
Willem de Bruijn <willemb@...gle.com>,
Pablo Neira Ayuso <pablo@...filter.org>,
Kees Cook <keescook@...omium.org>, netdev@...r.kernel.org,
linux-kernel@...r.kernel.org, netfilter-devel@...r.kernel.org
Subject: [PATCH v4 net-next 4/5] net: filter: rename sk_convert_filter() -> bpf_convert_filter()
to indicate that this function is converting classic BPF into eBPF
and not related to sockets
Signed-off-by: Alexei Starovoitov <ast@...mgrid.com>
---
arch/x86/net/bpf_jit_comp.c | 2 +-
include/linux/filter.h | 4 ++--
kernel/bpf/core.c | 2 +-
kernel/seccomp.c | 4 ++--
net/core/filter.c | 16 ++++++++--------
5 files changed, 14 insertions(+), 14 deletions(-)
diff --git a/arch/x86/net/bpf_jit_comp.c b/arch/x86/net/bpf_jit_comp.c
index 71737a83f022..e2ecc1380b3d 100644
--- a/arch/x86/net/bpf_jit_comp.c
+++ b/arch/x86/net/bpf_jit_comp.c
@@ -235,7 +235,7 @@ static int do_jit(struct sk_filter *bpf_prog, int *addrs, u8 *image,
/* mov qword ptr [rbp-X],rbx */
EMIT3_off32(0x48, 0x89, 0x9D, -stacksize);
- /* sk_convert_filter() maps classic BPF register X to R7 and uses R8
+ /* bpf_convert_filter() maps classic BPF register X to R7 and uses R8
* as temporary, so all tcpdump filters need to spill/fill R7(r13) and
* R8(r14). R9(r15) spill could be made conditional, but there is only
* one 'bpf_error' return path out of helper functions inside bpf_jit.S
diff --git a/include/linux/filter.h b/include/linux/filter.h
index c4d0be4c5e75..7cb9b40e9a2f 100644
--- a/include/linux/filter.h
+++ b/include/linux/filter.h
@@ -351,8 +351,8 @@ int sk_filter(struct sock *sk, struct sk_buff *skb);
void sk_filter_select_runtime(struct sk_filter *fp);
void sk_filter_free(struct sk_filter *fp);
-int sk_convert_filter(struct sock_filter *prog, int len,
- struct bpf_insn *new_prog, int *new_len);
+int bpf_convert_filter(struct sock_filter *prog, int len,
+ struct bpf_insn *new_prog, int *new_len);
int sk_unattached_filter_create(struct sk_filter **pfp,
struct sock_fprog_kern *fprog);
diff --git a/kernel/bpf/core.c b/kernel/bpf/core.c
index b479807ec383..188ac5ba3900 100644
--- a/kernel/bpf/core.c
+++ b/kernel/bpf/core.c
@@ -446,7 +446,7 @@ load_word:
/* BPF_LD + BPD_ABS and BPF_LD + BPF_IND insns are
* only appearing in the programs where ctx ==
* skb. All programs keep 'ctx' in regs[BPF_REG_CTX]
- * == BPF_R6, sk_convert_filter() saves it in BPF_R6,
+ * == BPF_R6, bpf_convert_filter() saves it in BPF_R6,
* internal BPF verifier will check that BPF_R6 ==
* ctx.
*
diff --git a/kernel/seccomp.c b/kernel/seccomp.c
index f4a77d23f209..33a3a97e2b58 100644
--- a/kernel/seccomp.c
+++ b/kernel/seccomp.c
@@ -249,7 +249,7 @@ static long seccomp_attach_filter(struct sock_fprog *fprog)
goto free_prog;
/* Convert 'sock_filter' insns to 'bpf_insn' insns */
- ret = sk_convert_filter(fp, fprog->len, NULL, &new_len);
+ ret = bpf_convert_filter(fp, fprog->len, NULL, &new_len);
if (ret)
goto free_prog;
@@ -265,7 +265,7 @@ static long seccomp_attach_filter(struct sock_fprog *fprog)
if (!filter->prog)
goto free_filter;
- ret = sk_convert_filter(fp, fprog->len, filter->prog->insnsi, &new_len);
+ ret = bpf_convert_filter(fp, fprog->len, filter->prog->insnsi, &new_len);
if (ret)
goto free_filter_prog;
kfree(fp);
diff --git a/net/core/filter.c b/net/core/filter.c
index 5740ea08a3ad..6ac901613bee 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -312,7 +312,7 @@ static bool convert_bpf_extensions(struct sock_filter *fp,
}
/**
- * sk_convert_filter - convert filter program
+ * bpf_convert_filter - convert filter program
* @prog: the user passed filter program
* @len: the length of the user passed filter program
* @new_prog: buffer where converted program will be stored
@@ -322,12 +322,12 @@ static bool convert_bpf_extensions(struct sock_filter *fp,
* Conversion workflow:
*
* 1) First pass for calculating the new program length:
- * sk_convert_filter(old_prog, old_len, NULL, &new_len)
+ * bpf_convert_filter(old_prog, old_len, NULL, &new_len)
*
* 2) 2nd pass to remap in two passes: 1st pass finds new
* jump offsets, 2nd pass remapping:
* new_prog = kmalloc(sizeof(struct bpf_insn) * new_len);
- * sk_convert_filter(old_prog, old_len, new_prog, &new_len);
+ * bpf_convert_filter(old_prog, old_len, new_prog, &new_len);
*
* User BPF's register A is mapped to our BPF register 6, user BPF
* register X is mapped to BPF register 7; frame pointer is always
@@ -335,8 +335,8 @@ static bool convert_bpf_extensions(struct sock_filter *fp,
* for socket filters: ctx == 'struct sk_buff *', for seccomp:
* ctx == 'struct seccomp_data *'.
*/
-int sk_convert_filter(struct sock_filter *prog, int len,
- struct bpf_insn *new_prog, int *new_len)
+int bpf_convert_filter(struct sock_filter *prog, int len,
+ struct bpf_insn *new_prog, int *new_len)
{
int new_flen = 0, pass = 0, target, i;
struct bpf_insn *new_insn;
@@ -921,7 +921,7 @@ static struct sk_filter *__sk_migrate_filter(struct sk_filter *fp)
}
/* 1st pass: calculate the new program length. */
- err = sk_convert_filter(old_prog, old_len, NULL, &new_len);
+ err = bpf_convert_filter(old_prog, old_len, NULL, &new_len);
if (err)
goto out_err_free;
@@ -940,9 +940,9 @@ static struct sk_filter *__sk_migrate_filter(struct sk_filter *fp)
fp->len = new_len;
/* 2nd pass: remap sock_filter insns into bpf_insn insns. */
- err = sk_convert_filter(old_prog, old_len, fp->insnsi, &new_len);
+ err = bpf_convert_filter(old_prog, old_len, fp->insnsi, &new_len);
if (err)
- /* 2nd sk_convert_filter() can fail only if it fails
+ /* 2nd bpf_convert_filter() can fail only if it fails
* to allocate memory, remapping must succeed. Note,
* that at this time old_fp has already been released
* by krealloc().
--
1.7.9.5
--
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