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authorKurt Kanzenbach <kurt@linutronix.de>2020-08-18 12:32:50 +0200
committerDavid S. Miller <davem@davemloft.net>2020-08-19 16:09:19 -0700
commit9087da5dcb3d14e5f10c0e24896cbba4b684ddd8 (patch)
treeadb657b59cef8c64de0315600185fdd33d4bda43 /drivers/ptp
parent38fa7d039fe095b5e516476694c4d5550e656b85 (diff)
downloadlinux-9087da5dcb3d14e5f10c0e24896cbba4b684ddd8.tar.bz2
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 <kurt@linutronix.de> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/ptp')
-rw-r--r--drivers/ptp/ptp_ines.c88
1 files changed, 25 insertions, 63 deletions
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;