[net-next,v3,08/10] net: socket: support hardware timestamp conversion to PHC bound

Message ID 20210615094517.48752-9-yangbo.lu@nxp.com
State Superseded
Headers show
Series
  • ptp: support virtual clocks and timestamping
Related show

Commit Message

Y.b. Lu June 15, 2021, 9:45 a.m.
This patch is to support hardware timestamp conversion to
PHC bound. This applies to both RX and TX since their skb
handling (for TX, it's skb clone in error queue) all goes
through __sock_recv_timestamp.

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
---
Changes for v3:
	- Added this patch.
---
 net/socket.c | 19 +++++++++++++------
 1 file changed, 13 insertions(+), 6 deletions(-)

Patch

diff --git a/net/socket.c b/net/socket.c
index 27e3e7d53f8e..ac07df4feb29 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -104,6 +104,7 @@ 
 #include <linux/sockios.h>
 #include <net/busy_poll.h>
 #include <linux/errqueue.h>
+#include <linux/ptp_clock_kernel.h>
 
 #ifdef CONFIG_NET_RX_BUSY_POLL
 unsigned int sysctl_net_busy_read __read_mostly;
@@ -825,12 +826,18 @@  void __sock_recv_timestamp(struct msghdr *msg, struct sock *sk,
 		empty = 0;
 	if (shhwtstamps &&
 	    (sk->sk_tsflags & SOF_TIMESTAMPING_RAW_HARDWARE) &&
-	    !skb_is_swtx_tstamp(skb, false_tstamp) &&
-	    ktime_to_timespec64_cond(shhwtstamps->hwtstamp, tss.ts + 2)) {
-		empty = 0;
-		if ((sk->sk_tsflags & SOF_TIMESTAMPING_OPT_PKTINFO) &&
-		    !skb_is_err_queue(skb))
-			put_ts_pktinfo(msg, skb);
+	    !skb_is_swtx_tstamp(skb, false_tstamp)) {
+		if (sk->sk_tsflags & SOF_TIMESTAMPING_BIND_PHC)
+			ptp_convert_timestamp(shhwtstamps, sk->sk_bind_phc);
+
+		if (ktime_to_timespec64_cond(shhwtstamps->hwtstamp,
+					     tss.ts + 2)) {
+			empty = 0;
+
+			if ((sk->sk_tsflags & SOF_TIMESTAMPING_OPT_PKTINFO) &&
+			    !skb_is_err_queue(skb))
+				put_ts_pktinfo(msg, skb);
+		}
 	}
 	if (!empty) {
 		if (sock_flag(sk, SOCK_TSTAMP_NEW))