| From | Greg Kroah-Hartman <> | Subject | [PATCH 3.12 42/77] sfc: Rate-limit log message for PTP packets without a matching timestamp event | Date | Mon, 13 Jan 2014 16:28:03 -0800 |
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3.12-stable review patch. If anyone has any objections, please let me know.
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From: Ben Hutchings <bhutchings@solarflare.com>
[ Upstream commit 35f9a7a380728a94d417e5824a866f969423ac83 ]
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: 7c236c43b838 ('sfc: Add support for IEEE-1588 PTP') Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- drivers/net/ethernet/sfc/ptp.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)
--- a/drivers/net/ethernet/sfc/ptp.c +++ b/drivers/net/ethernet/sfc/ptp.c @@ -717,8 +717,9 @@ static bool efx_ptp_process_events(struc __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 */
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