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net: socket: support hardware timestamp conversion to PHC bound

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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 <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Yangbo Lu authored and David S. Miller committed 2021-07-01 13:08:18 -07:00
1 parent d463126e23
commit d7c0882655
1 file changed
+13 -6
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net/socket.c
+13 -6
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@@ -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;
@@ -873,12 +874,18 @@ 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))