[net-next 07/15] igb: introduce ptp_flags variable and use it to replace IGB_FLAG_PTP

[Jeff Kirsher]

From: Jacob Keller <jacob.e.kel...@intel.com>

Upcoming patches will introduce new PTP specific flags. To avoid
cluttering the normal flags variable, introduce PTP specific "ptp_flags"
variable for this purpose, and move IGB_FLAG_PTP to become
IGB_PTP_ENABLED.

Signed-off-by: Jacob Keller <jacob.e.kel...@intel.com>
Tested-by: Aaron Brown <aaron.f.br...@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirs...@intel.com>
---
 drivers/net/ethernet/intel/igb/igb.h     | 5 ++++-
 drivers/net/ethernet/intel/igb/igb_ptp.c | 7 ++++---
 2 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/intel/igb/igb.h 
b/drivers/net/ethernet/intel/igb/igb.h
index b9609af..1e18a9e 100644
--- a/drivers/net/ethernet/intel/igb/igb.h
+++ b/drivers/net/ethernet/intel/igb/igb.h
@@ -445,6 +445,7 @@ struct igb_adapter {
        unsigned long ptp_tx_start;
        unsigned long last_rx_ptp_check;
        unsigned long last_rx_timestamp;
+       unsigned int ptp_flags;
        spinlock_t tmreg_lock;
        struct cyclecounter cc;
        struct timecounter tc;
@@ -474,12 +475,14 @@ struct igb_adapter {
        u16 eee_advert;
 };
 
+/* flags controlling PTP/1588 function */
+#define IGB_PTP_ENABLED                BIT(0)
+
 #define IGB_FLAG_HAS_MSI               BIT(0)
 #define IGB_FLAG_DCA_ENABLED           BIT(1)
 #define IGB_FLAG_QUAD_PORT_A           BIT(2)
 #define IGB_FLAG_QUEUE_PAIRS           BIT(3)
 #define IGB_FLAG_DMAC                  BIT(4)
-#define IGB_FLAG_PTP                   BIT(5)
 #define IGB_FLAG_RSS_FIELD_IPV4_UDP    BIT(6)
 #define IGB_FLAG_RSS_FIELD_IPV6_UDP    BIT(7)
 #define IGB_FLAG_WOL_SUPPORTED         BIT(8)
diff --git a/drivers/net/ethernet/intel/igb/igb_ptp.c 
b/drivers/net/ethernet/intel/igb/igb_ptp.c
index f097c5a..504102b 100644
--- a/drivers/net/ethernet/intel/igb/igb_ptp.c
+++ b/drivers/net/ethernet/intel/igb/igb_ptp.c
@@ -684,6 +684,7 @@ void igb_ptp_rx_hang(struct igb_adapter *adapter)
        u32 tsyncrxctl = rd32(E1000_TSYNCRXCTL);
        unsigned long rx_event;
 
+       /* Other hardware uses per-packet timestamps */
        if (hw->mac.type != e1000_82576)
                return;
 
@@ -1156,7 +1157,7 @@ void igb_ptp_init(struct igb_adapter *adapter)
        } else {
                dev_info(&adapter->pdev->dev, "added PHC on %s\n",
                         adapter->netdev->name);
-               adapter->flags |= IGB_FLAG_PTP;
+               adapter->ptp_flags |= IGB_PTP_ENABLED;
        }
 }
 
@@ -1194,7 +1195,7 @@ void igb_ptp_stop(struct igb_adapter *adapter)
                ptp_clock_unregister(adapter->ptp_clock);
                dev_info(&adapter->pdev->dev, "removed PHC on %s\n",
                         adapter->netdev->name);
-               adapter->flags &= ~IGB_FLAG_PTP;
+               adapter->ptp_flags &= ~IGB_PTP_ENABLED;
        }
 }
 
@@ -1209,7 +1210,7 @@ void igb_ptp_reset(struct igb_adapter *adapter)
        struct e1000_hw *hw = &adapter->hw;
        unsigned long flags;
 
-       if (!(adapter->flags & IGB_FLAG_PTP))
+       if (!(adapter->ptp_flags & IGB_PTP_ENABLED))
                return;
 
        /* reset the tstamp_config */
-- 
2.5.5