e1000: display flow control of link status at link up

Print RX/TX flow control setting at link up time to display the
actual link FC properties instead of the advertised values.

Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>

1 files changed, 11 insertions, 4 deletions

diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c
index ab1b40f644d..43dde2733ec 100644
--- a/drivers/net/e1000/e1000_main.c
+++ b/drivers/net/e1000/e1000_main.c
@@ -2583,15 +2583,22 @@ e1000_watchdog(unsigned long data)
 
         if (link) {
                 if (!netif_carrier_ok(netdev)) {
+                        uint32_t ctrl;
                         boolean_t txb2b = 1;
                         e1000_get_speed_and_duplex(&adapter->hw,
                                                    &adapter->link_speed,
                                                    &adapter->link_duplex);
 
-                        DPRINTK(LINK, INFO, "NIC Link is Up %d Mbps %s\n",
-                               adapter->link_speed,
-                               adapter->link_duplex == FULL_DUPLEX ?
-                               "Full Duplex" : "Half Duplex");
+                        ctrl = E1000_READ_REG(&adapter->hw, CTRL);
+                        DPRINTK(LINK, INFO, "NIC Link is Up %d Mbps %s, "
+                                "Flow Control: %s\n",
+                                adapter->link_speed,
+                                adapter->link_duplex == FULL_DUPLEX ?
+                                "Full Duplex" : "Half Duplex",
+                                ((ctrl & E1000_CTRL_TFCE) && (ctrl &
+                                E1000_CTRL_RFCE)) ? "RX/TX" : ((ctrl &
+                                E1000_CTRL_RFCE) ? "RX" : ((ctrl &
+                                E1000_CTRL_TFCE) ? "TX" : "None" )));
 
                         /* tweak tx_queue_len according to speed/duplex
                          * and adjust the timeout factor */