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sfc: Rate-limit log message for PTP packets without a matching timestamp event

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In case of a flood of PTP packets, the timestamp peripheral and MC
firmware on the SFN[56]322F boards may not be able to provide
timestamp events for all packets.  Don't complain too much about this.

Fixes: 7c236c43b8 ('sfc: Add support for IEEE-1588 PTP')
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
This commit is contained in:
Ben Hutchings 2013-12-06 22:10:46 +00:00
parent f32116003c
commit 35f9a7a380
1 changed files with 3 additions and 2 deletions
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5
drivers/net/ethernet/sfc/ptp.c
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@ -717,8 +717,9 @@ static bool efx_ptp_process_events(struct efx_nic *efx, struct sk_buff_head *q)
__skb_queue_tail(q, skb);
} else if (time_after(jiffies, match->expiry)) {
match->state = PTP_PACKET_STATE_TIMED_OUT;
netif_warn(efx, rx_err, efx->net_dev,
"PTP packet - no timestamp seen\n");
if (net_ratelimit())
netif_warn(efx, rx_err, efx->net_dev,
"PTP packet - no timestamp seen\n");
__skb_queue_tail(q, skb);
} else {
/* Replace unprocessed entry and stop */