diff options
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlxsw/spectrum_ptp.c')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/spectrum_ptp.c | 32 |
1 files changed, 7 insertions, 25 deletions
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_ptp.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_ptp.c index 9650562fc0ef..ca8090a28dec 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_ptp.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_ptp.c @@ -314,11 +314,9 @@ static int mlxsw_sp_ptp_parse(struct sk_buff *skb, u8 *p_message_type, u16 *p_sequence_id) { - unsigned int offset = 0; unsigned int ptp_class; - u8 *data; + struct ptp_header *hdr; - data = skb_mac_header(skb); ptp_class = ptp_classify_raw(skb); switch (ptp_class & PTP_CLASS_VMASK) { @@ -329,30 +327,14 @@ static int mlxsw_sp_ptp_parse(struct sk_buff *skb, return -ERANGE; } - if (ptp_class & PTP_CLASS_VLAN) - offset += VLAN_HLEN; - - switch (ptp_class & PTP_CLASS_PMASK) { - case PTP_CLASS_IPV4: - offset += ETH_HLEN + IPV4_HLEN(data + offset) + UDP_HLEN; - break; - case PTP_CLASS_IPV6: - offset += ETH_HLEN + IP6_HLEN + UDP_HLEN; - break; - case PTP_CLASS_L2: - offset += ETH_HLEN; - break; - default: - return -ERANGE; - } - - /* PTP header is 34 bytes. */ - if (skb->len < offset + 34) + hdr = ptp_parse_header(skb, ptp_class); + if (!hdr) return -EINVAL; - *p_message_type = data[offset] & 0x0f; - *p_domain_number = data[offset + 4]; - *p_sequence_id = (u16)(data[offset + 30]) << 8 | data[offset + 31]; + *p_message_type = ptp_get_msgtype(hdr, ptp_class); + *p_domain_number = hdr->domain_number; + *p_sequence_id = be16_to_cpu(hdr->sequence_id); + return 0; } |