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| author | Daniel Borkmann <dborkman@redhat.com> | 2014-03-28 18:58:22 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-03-31 00:45:09 -0400 |
| commit | 164d8c6665213c931645578310256da7b1259331 (patch) | |
| tree | 336d19cb5fd510a3aaf6b1eb908f256c0cb9ee09 /net/core/timestamping.c | |
| parent | e62d2df084e2849edffb206559725fa81bb569a8 (diff) | |
| download | lwn-164d8c6665213c931645578310256da7b1259331.tar.gz lwn-164d8c6665213c931645578310256da7b1259331.zip | |
net: ptp: do not reimplement PTP/BPF classifier
There are currently pch_gbe, cpts, and ixp4xx_eth drivers that open-code
and reimplement a BPF classifier for the PTP protocol. Since all of them
effectively do the very same thing and load the very same PTP/BPF filter,
we can just consolidate that code by introducing ptp_classify_raw() in
the time-stamping core framework which can be used in drivers.
As drivers get initialized after bootstrapping the core networking
subsystem, they can make use of ptp_insns wrapped through
ptp_classify_raw(), which allows to simplify and remove PTP classifier
setup code in drivers.
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>
Diffstat (limited to 'net/core/timestamping.c')
| -rw-r--r-- | net/core/timestamping.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/net/core/timestamping.c b/net/core/timestamping.c index e43d56acf803..9ff26b3cc021 100644 --- a/net/core/timestamping.c +++ b/net/core/timestamping.c @@ -25,11 +25,17 @@ static struct sk_filter *ptp_insns __read_mostly; +unsigned int ptp_classify_raw(const struct sk_buff *skb) +{ + return SK_RUN_FILTER(ptp_insns, skb); +} +EXPORT_SYMBOL_GPL(ptp_classify_raw); + static unsigned int classify(const struct sk_buff *skb) { if (likely(skb->dev && skb->dev->phydev && skb->dev->phydev->drv)) - return SK_RUN_FILTER(ptp_insns, skb); + return ptp_classify_raw(skb); else return PTP_CLASS_NONE; } |