Author: arybchik
Date: Wed Mar 25 11:01:03 2015
New Revision: 280560
URL: https://svnweb.freebsd.org/changeset/base/280560

Log:
  MFC: 279096
  
  sfxge: keep fw and driver view of autoneg parameters consistent
  
  Previously the driver's view was the expected outcome of any
  reconfiguration even if that reconfiguration failed.
  
  Submitted by:   Ben Horgan
  Sponsored by:   Solarflare Communications, Inc.
  Approved by:    gnn (mentor)

Modified:
  stable/10/sys/dev/sfxge/common/efx_phy.c
Directory Properties:
  stable/10/   (props changed)

Modified: stable/10/sys/dev/sfxge/common/efx_phy.c
==============================================================================
--- stable/10/sys/dev/sfxge/common/efx_phy.c    Wed Mar 25 11:00:09 2015        
(r280559)
+++ stable/10/sys/dev/sfxge/common/efx_phy.c    Wed Mar 25 11:01:03 2015        
(r280560)
@@ -427,6 +427,7 @@ efx_phy_adv_cap_set(
 {
        efx_port_t *epp = &(enp->en_port);
        efx_phy_ops_t *epop = epp->ep_epop;
+       uint32_t old_mask;
        int rc;
 
        EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
@@ -440,6 +441,7 @@ efx_phy_adv_cap_set(
        if (epp->ep_adv_cap_mask == mask)
                goto done;
 
+       old_mask = epp->ep_adv_cap_mask;
        epp->ep_adv_cap_mask = mask;
 
        if ((rc = epop->epo_reconfigure(enp)) != 0)
@@ -450,6 +452,17 @@ done:
 
 fail2:
        EFSYS_PROBE(fail2);
+
+       epp->ep_adv_cap_mask = old_mask;
+       /* Reconfigure for robustness */
+       if (epop->epo_reconfigure(enp) != 0) {
+               /*
+                * We may have an inconsistent view of our advertised speed
+                * capabilities.
+                */
+               EFSYS_ASSERT(0);
+       }
+
 fail1:
        EFSYS_PROBE1(fail1, int, rc);
 
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