diff mbox series

[net-next,6/6] ionic: recreate hwstamp queues on ifup

Message ID 20210827185512.50206-7-snelson@pensando.io (mailing list archive)
State Accepted
Commit ccbbd002a419b5b4df481be8d42c3c7a3ce86426
Delegated to: Netdev Maintainers
Headers show
Series ionic: queue mgmt updates | expand

Checks

Context Check Description
netdev/cover_letter success Link
netdev/fixes_present success Link
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netdev/tree_selection success Clearly marked for net-next
netdev/subject_prefix success Link
netdev/cc_maintainers warning 2 maintainers not CCed: saeedm@nvidia.com dan.carpenter@oracle.com
netdev/source_inline success Was 0 now: 0
netdev/verify_signedoff success Link
netdev/module_param success Was 0 now: 0
netdev/build_32bit success Errors and warnings before: 0 this patch: 0
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/verify_fixes success Link
netdev/checkpatch warning WARNING: line length of 91 exceeds 80 columns
netdev/build_allmodconfig_warn success Errors and warnings before: 0 this patch: 0
netdev/header_inline success Link

Commit Message

Shannon Nelson Aug. 27, 2021, 6:55 p.m. UTC 
The queues can be freed in ionic_close().  They need to be recreated
after ionic_open().  It doesn't need to replay the whole config.  It
only needs to create the timestamping queues again.

Signed-off-by: Allen Hubbe <allenbh@pensando.io>
Signed-off-by: Shannon Nelson <snelson@pensando.io>
---
 .../net/ethernet/pensando/ionic/ionic_lif.c   |  6 +++++
 .../net/ethernet/pensando/ionic/ionic_lif.h   |  2 ++
 .../net/ethernet/pensando/ionic/ionic_phc.c   | 24 +++++++++++++++++++
 3 files changed, 32 insertions(+)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/pensando/ionic/ionic_lif.c b/drivers/net/ethernet/pensando/ionic/ionic_lif.c
index 96e7e289b7d3..23c9e196a784 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_lif.c
+++ b/drivers/net/ethernet/pensando/ionic/ionic_lif.c
@@ -2246,7 +2246,13 @@  static int ionic_open(struct net_device *netdev)
 			goto err_txrx_deinit;
 	}
 
+	/* If hardware timestamping is enabled, but the queues were freed by
+	 * ionic_stop, those need to be reallocated and initialized, too.
+	 */
+	ionic_lif_hwstamp_recreate_queues(lif);
+
 	mutex_unlock(&lif->queue_lock);
+
 	return 0;
 
 err_txrx_deinit:
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_lif.h b/drivers/net/ethernet/pensando/ionic/ionic_lif.h
index cad193d358e8..4915184f3efb 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_lif.h
+++ b/drivers/net/ethernet/pensando/ionic/ionic_lif.h
@@ -306,6 +306,7 @@  int ionic_lif_size(struct ionic *ionic);
 
 #if IS_ENABLED(CONFIG_PTP_1588_CLOCK)
 void ionic_lif_hwstamp_replay(struct ionic_lif *lif);
+void ionic_lif_hwstamp_recreate_queues(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);
@@ -315,6 +316,7 @@  void ionic_lif_alloc_phc(struct ionic_lif *lif);
 void ionic_lif_free_phc(struct ionic_lif *lif);
 #else
 static inline void ionic_lif_hwstamp_replay(struct ionic_lif *lif) {}
+static inline void ionic_lif_hwstamp_recreate_queues(struct ionic_lif *lif) {}
 
 static inline int ionic_lif_hwstamp_set(struct ionic_lif *lif, struct ifreq *ifr)
 {
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_phc.c b/drivers/net/ethernet/pensando/ionic/ionic_phc.c
index c39790a6c436..eed2db69d708 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_phc.c
+++ b/drivers/net/ethernet/pensando/ionic/ionic_phc.c
@@ -222,6 +222,30 @@  void ionic_lif_hwstamp_replay(struct ionic_lif *lif)
 		netdev_info(lif->netdev, "hwstamp replay failed: %d\n", err);
 }
 
+void ionic_lif_hwstamp_recreate_queues(struct ionic_lif *lif)
+{
+	int err;
+
+	if (!lif->phc || !lif->phc->ptp)
+		return;
+
+	mutex_lock(&lif->phc->config_lock);
+
+	if (lif->phc->ts_config_tx_mode) {
+		err = ionic_lif_create_hwstamp_txq(lif);
+		if (err)
+			netdev_info(lif->netdev, "hwstamp recreate txq failed: %d\n", err);
+	}
+
+	if (lif->phc->ts_config_rx_filt) {
+		err = ionic_lif_create_hwstamp_rxq(lif);
+		if (err)
+			netdev_info(lif->netdev, "hwstamp recreate rxq failed: %d\n", err);
+	}
+
+	mutex_unlock(&lif->phc->config_lock);
+}
+
 int ionic_lif_hwstamp_get(struct ionic_lif *lif, struct ifreq *ifr)
 {
 	struct hwtstamp_config config;