From 8a075464d1e9317ffae0973dfe538a7511291a06 Mon Sep 17 00:00:00 2001 From: Vladimir Oltean Date: Fri, 26 Nov 2021 19:28:41 +0200 Subject: [PATCH] net: mscc: ocelot: don't downgrade timestamping RX filters in SIOCSHWTSTAMP The ocelot driver, when asked to timestamp all receiving packets, 1588 v1 or NTP, says "nah, here's 1588 v2 for you". According to this discussion: https://patchwork.kernel.org/project/netdevbpf/patch/20211104133204.19757-8-martin.kaistra@linutronix.de/#24577647 drivers that downgrade from a wider request to a narrower response (or even a response where the intersection with the request is empty) are buggy, and should return -ERANGE instead. This patch fixes that. Fixes: 4e3b0468e6d7 ("net: mscc: PTP Hardware Clock (PHC) support") Suggested-by: Richard Cochran Signed-off-by: Vladimir Oltean Acked-by: Richard Cochran Signed-off-by: Jakub Kicinski --- drivers/net/ethernet/mscc/ocelot.c | 6 ------ 1 file changed, 6 deletions(-) diff --git a/drivers/net/ethernet/mscc/ocelot.c b/drivers/net/ethernet/mscc/ocelot.c index e6c18b598d5c..bcc4f2f74ccc 100644 --- a/drivers/net/ethernet/mscc/ocelot.c +++ b/drivers/net/ethernet/mscc/ocelot.c @@ -1320,12 +1320,6 @@ int ocelot_hwstamp_set(struct ocelot *ocelot, int port, struct ifreq *ifr) switch (cfg.rx_filter) { case HWTSTAMP_FILTER_NONE: break; - case HWTSTAMP_FILTER_ALL: - case HWTSTAMP_FILTER_SOME: - case HWTSTAMP_FILTER_PTP_V1_L4_EVENT: - case HWTSTAMP_FILTER_PTP_V1_L4_SYNC: - case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ: - case HWTSTAMP_FILTER_NTP_ALL: case HWTSTAMP_FILTER_PTP_V2_L4_EVENT: case HWTSTAMP_FILTER_PTP_V2_L4_SYNC: case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ: -- 2.20.1