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Date: Wed, 30 Jul 2014 20:34:14 -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 3/5] net: filter: rename sk_chk_filter() -> bpf_check_classic()
trivial rename to indicate that this functions performs classic BPF checking
Signed-off-by: Alexei Starovoitov <ast@...mgrid.com>
---
Documentation/networking/filter.txt | 2 +-
include/linux/filter.h | 2 +-
kernel/bpf/core.c | 2 +-
kernel/seccomp.c | 4 ++--
net/core/filter.c | 10 +++++-----
5 files changed, 10 insertions(+), 10 deletions(-)
diff --git a/Documentation/networking/filter.txt b/Documentation/networking/filter.txt
index ee78eba78a9d..712068be8171 100644
--- a/Documentation/networking/filter.txt
+++ b/Documentation/networking/filter.txt
@@ -591,7 +591,7 @@ sk_unattached_filter_destroy() for destroying it. The macro
SK_RUN_FILTER(filter, ctx) transparently invokes eBPF interpreter or JITed
code to run the filter. 'filter' is a pointer to struct sk_filter that we
got from sk_unattached_filter_create(), and 'ctx' the given context (e.g.
-skb pointer). All constraints and restrictions from sk_chk_filter() apply
+skb pointer). All constraints and restrictions from bpf_check_classic() apply
before a conversion to the new layout is being done behind the scenes!
Currently, the classic BPF format is being used for JITing on most of the
diff --git a/include/linux/filter.h b/include/linux/filter.h
index 3769341a745d..c4d0be4c5e75 100644
--- a/include/linux/filter.h
+++ b/include/linux/filter.h
@@ -361,7 +361,7 @@ void sk_unattached_filter_destroy(struct sk_filter *fp);
int sk_attach_filter(struct sock_fprog *fprog, struct sock *sk);
int sk_detach_filter(struct sock *sk);
-int sk_chk_filter(const struct sock_filter *filter, unsigned int flen);
+int bpf_check_classic(const struct sock_filter *filter, unsigned int flen);
int sk_get_filter(struct sock *sk, struct sock_filter __user *filter,
unsigned int len);
diff --git a/kernel/bpf/core.c b/kernel/bpf/core.c
index 265a02cc822d..b479807ec383 100644
--- a/kernel/bpf/core.c
+++ b/kernel/bpf/core.c
@@ -18,7 +18,7 @@
* 2 of the License, or (at your option) any later version.
*
* Andi Kleen - Fix a few bad bugs and races.
- * Kris Katterjohn - Added many additional checks in sk_chk_filter()
+ * Kris Katterjohn - Added many additional checks in bpf_check_classic()
*/
#include <linux/filter.h>
#include <linux/skbuff.h>
diff --git a/kernel/seccomp.c b/kernel/seccomp.c
index 565743db5384..f4a77d23f209 100644
--- a/kernel/seccomp.c
+++ b/kernel/seccomp.c
@@ -87,7 +87,7 @@ static void populate_seccomp_data(struct seccomp_data *sd)
* @filter: filter to verify
* @flen: length of filter
*
- * Takes a previously checked filter (by sk_chk_filter) and
+ * Takes a previously checked filter (by bpf_check_classic) and
* redirects all filter code that loads struct sk_buff data
* and related data through seccomp_bpf_load. It also
* enforces length and alignment checking of those loads.
@@ -239,7 +239,7 @@ static long seccomp_attach_filter(struct sock_fprog *fprog)
goto free_prog;
/* Check and rewrite the fprog via the skb checker */
- ret = sk_chk_filter(fp, fprog->len);
+ ret = bpf_check_classic(fp, fprog->len);
if (ret)
goto free_prog;
diff --git a/net/core/filter.c b/net/core/filter.c
index d6cb287e4f59..5740ea08a3ad 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -18,7 +18,7 @@
* 2 of the License, or (at your option) any later version.
*
* Andi Kleen - Fix a few bad bugs and races.
- * Kris Katterjohn - Added many additional checks in sk_chk_filter()
+ * Kris Katterjohn - Added many additional checks in bpf_check_classic()
*/
#include <linux/module.h>
@@ -721,7 +721,7 @@ static bool chk_code_allowed(u16 code_to_probe)
}
/**
- * sk_chk_filter - verify socket filter code
+ * bpf_check_classic - verify socket filter code
* @filter: filter to verify
* @flen: length of filter
*
@@ -734,7 +734,7 @@ static bool chk_code_allowed(u16 code_to_probe)
*
* Returns 0 if the rule set is legal or -EINVAL if not.
*/
-int sk_chk_filter(const struct sock_filter *filter, unsigned int flen)
+int bpf_check_classic(const struct sock_filter *filter, unsigned int flen)
{
bool anc_found;
int pc;
@@ -808,7 +808,7 @@ int sk_chk_filter(const struct sock_filter *filter, unsigned int flen)
return -EINVAL;
}
-EXPORT_SYMBOL(sk_chk_filter);
+EXPORT_SYMBOL(bpf_check_classic);
static int sk_store_orig_filter(struct sk_filter *fp,
const struct sock_fprog *fprog)
@@ -968,7 +968,7 @@ static struct sk_filter *__sk_prepare_filter(struct sk_filter *fp)
fp->bpf_func = NULL;
fp->jited = 0;
- err = sk_chk_filter(fp->insns, fp->len);
+ err = bpf_check_classic(fp->insns, fp->len);
if (err) {
__sk_filter_release(fp);
return ERR_PTR(err);
--
1.7.9.5
--
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