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authorDaniel Borkmann <daniel@iogearbox.net>2016-12-04 23:19:39 +0100
committerDavid S. Miller <davem@davemloft.net>2016-12-05 15:33:10 -0500
commit1afaf661b20a075a22eef3332db187001a334b81 (patch)
tree828e82ba4e9a2600b083dd632cfaa0d7979b970f /net/core
parent70f23a807dcab4ee3467c70ba2c7be69026f0a67 (diff)
downloadlinux-1afaf661b20a075a22eef3332db187001a334b81.tar.bz2
bpf: remove type arg from __is_valid_{,xdp_}access
Commit d691f9e8d440 ("bpf: allow programs to write to certain skb fields") pushed access type check outside of __is_valid_access() to have different restrictions for socket filters and tc programs. type is thus not used anymore within __is_valid_access() and should be removed as a function argument. Same for __is_valid_xdp_access() introduced by 6a773a15a1e8 ("bpf: add XDP prog type for early driver filter"). Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core')
-rw-r--r--net/core/filter.c15
1 files changed, 6 insertions, 9 deletions
diff --git a/net/core/filter.c b/net/core/filter.c
index 56b43587d200..b751202e12f8 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -2748,7 +2748,7 @@ lwt_xmit_func_proto(enum bpf_func_id func_id)
}
}
-static bool __is_valid_access(int off, int size, enum bpf_access_type type)
+static bool __is_valid_access(int off, int size)
{
if (off < 0 || off >= sizeof(struct __sk_buff))
return false;
@@ -2782,7 +2782,7 @@ static bool sk_filter_is_valid_access(int off, int size,
}
}
- return __is_valid_access(off, size, type);
+ return __is_valid_access(off, size);
}
static bool lwt_is_valid_access(int off, int size,
@@ -2815,7 +2815,7 @@ static bool lwt_is_valid_access(int off, int size,
break;
}
- return __is_valid_access(off, size, type);
+ return __is_valid_access(off, size);
}
static bool sock_filter_is_valid_access(int off, int size,
@@ -2833,11 +2833,9 @@ static bool sock_filter_is_valid_access(int off, int size,
if (off < 0 || off + size > sizeof(struct bpf_sock))
return false;
-
/* The verifier guarantees that size > 0. */
if (off % size != 0)
return false;
-
if (size != sizeof(__u32))
return false;
@@ -2910,11 +2908,10 @@ static bool tc_cls_act_is_valid_access(int off, int size,
break;
}
- return __is_valid_access(off, size, type);
+ return __is_valid_access(off, size);
}
-static bool __is_valid_xdp_access(int off, int size,
- enum bpf_access_type type)
+static bool __is_valid_xdp_access(int off, int size)
{
if (off < 0 || off >= sizeof(struct xdp_md))
return false;
@@ -2942,7 +2939,7 @@ static bool xdp_is_valid_access(int off, int size,
break;
}
- return __is_valid_xdp_access(off, size, type);
+ return __is_valid_xdp_access(off, size);
}
void bpf_warn_invalid_xdp_action(u32 act)