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net: ptp: use sk_unattached_filter_create() for BPF

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This patch migrates an open-coded sk_run_filter() implementation with
proper use of the BPF API, that is, sk_unattached_filter_create(). This
migration is needed, as we will be internally transforming the filter
to a different representation, and therefore needs to be decoupled.

It is okay to do so as skb_timestamping_init() is called during
initialization of the network stack in core initcall via sock_init().
This would effectively also allow for PTP filters to be jit compiled if
bpf_jit_enable is set.

For better readability, there are also some newlines introduced, also
ptp_classify.h is only in kernel space.

Joint work with Alexei Starovoitov.

Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>
Cc: Richard Cochran <richard.cochran@omicron.at>
Cc: Jiri Benc <jbenc@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Daniel Borkmann
2014-03-28 18:58:21 +01:00
committed by David S. Miller
parent fbc907f0b1
commit e62d2df084
2 changed files with 14 additions and 11 deletions
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4
include/linux/ptp_classify.h
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@@ -27,11 +27,7 @@
#include <linux/if_vlan.h>
#include <linux/ip.h>
#include <linux/filter.h>
#ifdef __KERNEL__
#include <linux/in.h>
#else
#include <netinet/in.h>
#endif
#define PTP_CLASS_NONE 0x00 /* not a PTP event message */
#define PTP_CLASS_V1 0x01 /* protocol version 1 */