From 4df95ff488eb796aab9566652c250330179def17 Mon Sep 17 00:00:00 2001 From: Alexei Starovoitov Date: Wed, 30 Jul 2014 20:34:14 -0700 Subject: [PATCH] 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 Signed-off-by: David S. Miller --- 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 #include 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 @@ -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); -- 2.20.1