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| author | David S. Miller <davem@davemloft.net> | 2022-03-07 11:31:34 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2022-03-07 11:31:34 +0000 |
| commit | cd0b6277c3aafdf855a7cded10defd7705e6580e (patch) | |
| tree | 78c6c8f0eee3afb62c390ac91c80267e80b2fb41 /net | |
| parent | 669b258a793db9f1c3bff29ce2bbd61b810503ad (diff) | |
| parent | 3914a9c07e8c3a30f178f1c92e2354b9cffdecb5 (diff) | |
| download | linux-cd0b6277c3aafdf855a7cded10defd7705e6580e.tar.gz linux-cd0b6277c3aafdf855a7cded10defd7705e6580e.tar.bz2 linux-cd0b6277c3aafdf855a7cded10defd7705e6580e.zip | |
Merge branch 'ptp-is_sync'
Kurt Kanzenbach says:
====================
ptp: Add generic is_sync() function
as multiple PHY drivers such as micrel or TI dp83640 need to inspect whether a
given skb represents a PTP Sync message, provide a generic function for it. This
avoids code duplication and can be reused by future PHY IEEE 1588 implementations.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/core/ptp_classifier.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/net/core/ptp_classifier.c b/net/core/ptp_classifier.c index dd4cf01d1e0a..598041b0499e 100644 --- a/net/core/ptp_classifier.c +++ b/net/core/ptp_classifier.c @@ -137,6 +137,18 @@ struct ptp_header *ptp_parse_header(struct sk_buff *skb, unsigned int type) } EXPORT_SYMBOL_GPL(ptp_parse_header); +bool ptp_msg_is_sync(struct sk_buff *skb, unsigned int type) +{ + struct ptp_header *hdr; + + hdr = ptp_parse_header(skb, type); + if (!hdr) + return false; + + return ptp_get_msgtype(hdr, type) == PTP_MSGTYPE_SYNC; +} +EXPORT_SYMBOL_GPL(ptp_msg_is_sync); + void __init ptp_classifier_init(void) { static struct sock_filter ptp_filter[] __initdata = { |