From 9087da5dcb3d14e5f10c0e24896cbba4b684ddd8 Mon Sep 17 00:00:00 2001 From: Kurt Kanzenbach Date: Tue, 18 Aug 2020 12:32:50 +0200 Subject: ptp: ptp_ines: Use generic helper function In order to reduce code duplication between ptp drivers, generic helper functions were introduced. Use them. Signed-off-by: Kurt Kanzenbach Reviewed-by: Florian Fainelli Signed-off-by: David S. Miller --- drivers/ptp/ptp_ines.c | 88 ++++++++++++++------------------------------------ 1 file changed, 25 insertions(+), 63 deletions(-) (limited to 'drivers/ptp') diff --git a/drivers/ptp/ptp_ines.c b/drivers/ptp/ptp_ines.c index 7711651ff19e..d726c589edda 100644 --- a/drivers/ptp/ptp_ines.c +++ b/drivers/ptp/ptp_ines.c @@ -93,9 +93,6 @@ MODULE_LICENSE("GPL"); #define TC_E2E_PTP_V2 2 #define TC_P2P_PTP_V2 3 -#define OFF_PTP_CLOCK_ID 20 -#define OFF_PTP_PORT_NUM 28 - #define PHY_SPEED_10 0 #define PHY_SPEED_100 1 #define PHY_SPEED_1000 2 @@ -443,57 +440,41 @@ static void ines_link_state(struct mii_timestamper *mii_ts, static bool ines_match(struct sk_buff *skb, unsigned int ptp_class, struct ines_timestamp *ts, struct device *dev) { - u8 *msgtype, *data = skb_mac_header(skb); - unsigned int offset = 0; - __be16 *portn, *seqid; - __be64 *clkid; + struct ptp_header *hdr; + u16 portn, seqid; + u8 msgtype; + u64 clkid; if (unlikely(ptp_class & PTP_CLASS_V1)) return false; - 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 false; - } - - if (skb->len + ETH_HLEN < offset + OFF_PTP_SEQUENCE_ID + sizeof(*seqid)) + hdr = ptp_parse_header(skb, ptp_class); + if (!hdr) return false; - msgtype = data + offset; - clkid = (__be64 *)(data + offset + OFF_PTP_CLOCK_ID); - portn = (__be16 *)(data + offset + OFF_PTP_PORT_NUM); - seqid = (__be16 *)(data + offset + OFF_PTP_SEQUENCE_ID); + msgtype = ptp_get_msgtype(hdr, ptp_class); + clkid = be64_to_cpup((__be64 *)&hdr->source_port_identity.clock_identity.id[0]); + portn = be16_to_cpu(hdr->source_port_identity.port_number); + seqid = be16_to_cpu(hdr->sequence_id); - if (tag_to_msgtype(ts->tag & 0x7) != (*msgtype & 0xf)) { + if (tag_to_msgtype(ts->tag & 0x7) != msgtype) { dev_dbg(dev, "msgtype mismatch ts %hhu != skb %hhu\n", - tag_to_msgtype(ts->tag & 0x7), *msgtype & 0xf); + tag_to_msgtype(ts->tag & 0x7), msgtype); return false; } - if (cpu_to_be64(ts->clkid) != *clkid) { + if (ts->clkid != clkid) { dev_dbg(dev, "clkid mismatch ts %llx != skb %llx\n", - cpu_to_be64(ts->clkid), *clkid); + ts->clkid, clkid); return false; } - if (ts->portnum != ntohs(*portn)) { + if (ts->portnum != portn) { dev_dbg(dev, "portn mismatch ts %hu != skb %hu\n", - ts->portnum, ntohs(*portn)); + ts->portnum, portn); return false; } - if (ts->seqid != ntohs(*seqid)) { + if (ts->seqid != seqid) { dev_dbg(dev, "seqid mismatch ts %hu != skb %hu\n", - ts->seqid, ntohs(*seqid)); + ts->seqid, seqid); return false; } @@ -694,35 +675,16 @@ static void ines_txtstamp_work(struct work_struct *work) static bool is_sync_pdelay_resp(struct sk_buff *skb, int type) { - u8 *data = skb->data, *msgtype; - unsigned int offset = 0; - - if (type & PTP_CLASS_VLAN) - offset += VLAN_HLEN; + struct ptp_header *hdr; + u8 msgtype; - switch (type & 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 0; - } - - if (type & PTP_CLASS_V1) - offset += OFF_PTP_CONTROL; - - if (skb->len < offset + 1) - return 0; + hdr = ptp_parse_header(skb, type); + if (!hdr) + return false; - msgtype = data + offset; + msgtype = ptp_get_msgtype(hdr, type); - switch ((*msgtype & 0xf)) { + switch ((msgtype & 0xf)) { case SYNC: case PDELAY_RESP: return true; -- cgit v1.2.3-58-ga151