From 829600ce5e4e985a8a49c445c5e5c72ca613ce41 Mon Sep 17 00:00:00 2001 From: Shannon Nelson Date: Wed, 7 Apr 2021 16:20:00 -0700 Subject: [PATCH] ionic: add ts_config replay Split the call into ionic_lif_hwstamp_set() to have two separate interfaces, one from the ioctl() for changing the configuration and one for replaying the current configuration after a FW RESET. Signed-off-by: Shannon Nelson Signed-off-by: David S. Miller --- drivers/net/ethernet/pensando/ionic/ionic_lif.c | 2 +- drivers/net/ethernet/pensando/ionic/ionic_lif.h | 6 ++ drivers/net/ethernet/pensando/ionic/ionic_phc.c | 84 ++++++++++++++++--------- 3 files changed, 60 insertions(+), 32 deletions(-) diff --git a/drivers/net/ethernet/pensando/ionic/ionic_lif.c b/drivers/net/ethernet/pensando/ionic/ionic_lif.c index eae774c..af3a536 100644 --- a/drivers/net/ethernet/pensando/ionic/ionic_lif.c +++ b/drivers/net/ethernet/pensando/ionic/ionic_lif.c @@ -2993,7 +2993,7 @@ static void ionic_lif_handle_fw_up(struct ionic_lif *lif) dev_info(ionic->dev, "FW Up: LIFs restarted\n"); /* restore the hardware timestamping queues */ - ionic_lif_hwstamp_set(lif, NULL); + ionic_lif_hwstamp_replay(lif); return; diff --git a/drivers/net/ethernet/pensando/ionic/ionic_lif.h b/drivers/net/ethernet/pensando/ionic/ionic_lif.h index ea3b086..346506f 100644 --- a/drivers/net/ethernet/pensando/ionic/ionic_lif.h +++ b/drivers/net/ethernet/pensando/ionic/ionic_lif.h @@ -302,6 +302,7 @@ int ionic_lif_identify(struct ionic *ionic, u8 lif_type, int ionic_lif_size(struct ionic *ionic); #if IS_ENABLED(CONFIG_PTP_1588_CLOCK) +int ionic_lif_hwstamp_replay(struct ionic_lif *lif); int ionic_lif_hwstamp_set(struct ionic_lif *lif, struct ifreq *ifr); int ionic_lif_hwstamp_get(struct ionic_lif *lif, struct ifreq *ifr); ktime_t ionic_lif_phc_ktime(struct ionic_lif *lif, u64 counter); @@ -310,6 +311,11 @@ void ionic_lif_unregister_phc(struct ionic_lif *lif); void ionic_lif_alloc_phc(struct ionic_lif *lif); void ionic_lif_free_phc(struct ionic_lif *lif); #else +static inline int ionic_lif_hwstamp_replay(struct ionic_lif *lif) +{ + return -EOPNOTSUPP; +} + static inline int ionic_lif_hwstamp_set(struct ionic_lif *lif, struct ifreq *ifr) { return -EOPNOTSUPP; diff --git a/drivers/net/ethernet/pensando/ionic/ionic_phc.c b/drivers/net/ethernet/pensando/ionic/ionic_phc.c index 5d5da61..2bb7490 100644 --- a/drivers/net/ethernet/pensando/ionic/ionic_phc.c +++ b/drivers/net/ethernet/pensando/ionic/ionic_phc.c @@ -64,10 +64,12 @@ static u64 ionic_hwstamp_rx_filt(int config_rx_filter) } } -int ionic_lif_hwstamp_set(struct ionic_lif *lif, struct ifreq *ifr) +static int ionic_lif_hwstamp_set_ts_config(struct ionic_lif *lif, + struct hwtstamp_config *new_ts) { struct ionic *ionic = lif->ionic; - struct hwtstamp_config config; + struct hwtstamp_config *config; + struct hwtstamp_config ts; int tx_mode = 0; u64 rx_filt = 0; int err, err2; @@ -77,18 +79,23 @@ int ionic_lif_hwstamp_set(struct ionic_lif *lif, struct ifreq *ifr) if (!lif->phc || !lif->phc->ptp) return -EOPNOTSUPP; - if (ifr) { - if (copy_from_user(&config, ifr->ifr_data, sizeof(config))) - return -EFAULT; + if (new_ts) { + config = new_ts; } else { - /* if called with ifr == NULL, behave as if called with the - * current ts_config from the initial cleared state. + /* If called with new_ts == NULL, replay the previous request + * primarily for recovery after a FW_RESET. + * We saved the previous configuration request info, so copy + * the previous request for reference, clear the current state + * to match the device's reset state, and run with it. */ - memcpy(&config, &lif->phc->ts_config, sizeof(config)); - memset(&lif->phc->ts_config, 0, sizeof(config)); + config = &ts; + memcpy(config, &lif->phc->ts_config, sizeof(*config)); + memset(&lif->phc->ts_config, 0, sizeof(lif->phc->ts_config)); + lif->phc->ts_config_tx_mode = 0; + lif->phc->ts_config_rx_filt = 0; } - tx_mode = ionic_hwstamp_tx_mode(config.tx_type); + tx_mode = ionic_hwstamp_tx_mode(config->tx_type); if (tx_mode < 0) return tx_mode; @@ -96,18 +103,18 @@ int ionic_lif_hwstamp_set(struct ionic_lif *lif, struct ifreq *ifr) if ((ionic->ident.lif.eth.hwstamp_tx_modes & mask) != mask) return -ERANGE; - rx_filt = ionic_hwstamp_rx_filt(config.rx_filter); - rx_all = config.rx_filter != HWTSTAMP_FILTER_NONE && !rx_filt; + rx_filt = ionic_hwstamp_rx_filt(config->rx_filter); + rx_all = config->rx_filter != HWTSTAMP_FILTER_NONE && !rx_filt; mask = cpu_to_le64(rx_filt); if ((ionic->ident.lif.eth.hwstamp_rx_filters & mask) != mask) { rx_filt = 0; rx_all = true; - config.rx_filter = HWTSTAMP_FILTER_ALL; + config->rx_filter = HWTSTAMP_FILTER_ALL; } dev_dbg(ionic->dev, "config_rx_filter %d rx_filt %#llx rx_all %d\n", - config.rx_filter, rx_filt, rx_all); + config->rx_filter, rx_filt, rx_all); mutex_lock(&lif->phc->config_lock); @@ -141,15 +148,7 @@ int ionic_lif_hwstamp_set(struct ionic_lif *lif, struct ifreq *ifr) goto err_rxall; } - if (ifr) { - err = copy_to_user(ifr->ifr_data, &config, sizeof(config)); - if (err) { - err = -EFAULT; - goto err_final; - } - } - - memcpy(&lif->phc->ts_config, &config, sizeof(config)); + memcpy(&lif->phc->ts_config, config, sizeof(*config)); lif->phc->ts_config_rx_filt = rx_filt; lif->phc->ts_config_tx_mode = tx_mode; @@ -157,14 +156,6 @@ int ionic_lif_hwstamp_set(struct ionic_lif *lif, struct ifreq *ifr) return 0; -err_final: - if (rx_all != (lif->phc->ts_config.rx_filter == HWTSTAMP_FILTER_ALL)) { - rx_all = lif->phc->ts_config.rx_filter == HWTSTAMP_FILTER_ALL; - err2 = ionic_lif_config_hwstamp_rxq_all(lif, rx_all); - if (err2) - dev_err(ionic->dev, - "Failed to revert all-rxq timestamp config: %d\n", err2); - } err_rxall: if (rx_filt != lif->phc->ts_config_rx_filt) { rx_filt = lif->phc->ts_config_rx_filt; @@ -188,6 +179,37 @@ err_queues: return err; } +int ionic_lif_hwstamp_set(struct ionic_lif *lif, struct ifreq *ifr) +{ + struct hwtstamp_config config; + int err; + + if (copy_from_user(&config, ifr->ifr_data, sizeof(config))) + return -EFAULT; + + err = ionic_lif_hwstamp_set_ts_config(lif, &config); + if (err) { + netdev_info(lif->netdev, "hwstamp set failed: %d\n", err); + return err; + } + + if (copy_to_user(ifr->ifr_data, &config, sizeof(config))) + return -EFAULT; + + return 0; +} + +int ionic_lif_hwstamp_replay(struct ionic_lif *lif) +{ + int err; + + err = ionic_lif_hwstamp_set_ts_config(lif, NULL); + if (err) + netdev_info(lif->netdev, "hwstamp replay failed: %d\n", err); + + return err; +} + int ionic_lif_hwstamp_get(struct ionic_lif *lif, struct ifreq *ifr) { struct hwtstamp_config config; -- 2.7.4