diff options
Diffstat (limited to 'include/linux/dsa/ksz_common.h')
| -rw-r--r-- | include/linux/dsa/ksz_common.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/include/linux/dsa/ksz_common.h b/include/linux/dsa/ksz_common.h index d2a54161be97..a256b08d837d 100644 --- a/include/linux/dsa/ksz_common.h +++ b/include/linux/dsa/ksz_common.h @@ -9,10 +9,31 @@ #include <net/dsa.h> +/* All time stamps from the KSZ consist of 2 bits for seconds and 30 bits for + * nanoseconds. This is NOT the same as 32 bits for nanoseconds. + */ +#define KSZ_TSTAMP_SEC_MASK GENMASK(31, 30) +#define KSZ_TSTAMP_NSEC_MASK GENMASK(29, 0) + +static inline ktime_t ksz_decode_tstamp(u32 tstamp) +{ + u64 ns = FIELD_GET(KSZ_TSTAMP_SEC_MASK, tstamp) * NSEC_PER_SEC + + FIELD_GET(KSZ_TSTAMP_NSEC_MASK, tstamp); + + return ns_to_ktime(ns); +} + struct ksz_tagger_data { void (*hwtstamp_set_state)(struct dsa_switch *ds, bool on); }; +struct ksz_skb_cb { + u32 tstamp; +}; + +#define KSZ_SKB_CB(skb) \ + ((struct ksz_skb_cb *)((skb)->cb)) + static inline struct ksz_tagger_data * ksz_tagger_data(struct dsa_switch *ds) { |