svn commit: r278248 - head/sys/dev/sfxge

[Andrew Rybchenko]

Author: arybchik
Date: Thu Feb  5 11:37:07 2015
New Revision: 278248
URL: https://svnweb.freebsd.org/changeset/base/278248

Log:
  sfxge: access statistics buffers under port lock
  
  Allow access to statistics data not only from sysctl handlers.
  
  Submitted by:   Boris Misenov <Boris.Misenov at oktetlabs.ru>
  Sponsored by:   Solarflare Communications, Inc.
  Approved by:    gnn (mentor)

Modified:
  head/sys/dev/sfxge/sfxge_port.c

Modified: head/sys/dev/sfxge/sfxge_port.c
==============================================================================
--- head/sys/dev/sfxge/sfxge_port.c     Thu Feb  5 10:50:51 2015        
(r278247)
+++ head/sys/dev/sfxge/sfxge_port.c     Thu Feb  5 11:37:07 2015        
(r278248)
@@ -48,7 +48,7 @@ sfxge_mac_stat_update(struct sfxge_softc
        unsigned int count;
        int rc;
 
-       SFXGE_PORT_LOCK(port);
+       SFXGE_PORT_LOCK_ASSERT_OWNED(port);
 
        if (port->init_state != SFXGE_PORT_STARTED) {
                rc = 0;
@@ -82,7 +82,6 @@ sfxge_mac_stat_update(struct sfxge_softc
 
        rc = ETIMEDOUT;
 out:
-       SFXGE_PORT_UNLOCK(port);
        return (rc);
 }
 
@@ -93,12 +92,16 @@ sfxge_mac_stat_handler(SYSCTL_HANDLER_AR
        unsigned int id = arg2;
        int rc;
 
+       SFXGE_PORT_LOCK(&sc->port);
        if ((rc = sfxge_mac_stat_update(sc)) != 0)
-               return (rc);
+               goto out;
 
-       return (SYSCTL_OUT(req,
-                         (uint64_t *)sc->port.mac_stats.decode_buf + id,
-                         sizeof(uint64_t)));
+       rc = SYSCTL_OUT(req,
+                       (uint64_t *)sc->port.mac_stats.decode_buf + id,
+                       sizeof(uint64_t));
+out:
+       SFXGE_PORT_UNLOCK(&sc->port);
+       return (rc);
 }
 
 static void
@@ -453,7 +456,7 @@ sfxge_phy_stat_update(struct sfxge_softc
        unsigned int count;
        int rc;
 
-       SFXGE_PORT_LOCK(port);
+       SFXGE_PORT_LOCK_ASSERT_OWNED(port);
 
        if (port->init_state != SFXGE_PORT_STARTED) {
                rc = 0;
@@ -487,7 +490,6 @@ sfxge_phy_stat_update(struct sfxge_softc
 
        rc = ETIMEDOUT;
 out:
-       SFXGE_PORT_UNLOCK(port);
        return (rc);
 }
 
@@ -498,12 +500,16 @@ sfxge_phy_stat_handler(SYSCTL_HANDLER_AR
        unsigned int id = arg2;
        int rc;
 
+       SFXGE_PORT_LOCK(&sc->port);
        if ((rc = sfxge_phy_stat_update(sc)) != 0)
-               return (rc);
+               goto out;
 
-       return (SYSCTL_OUT(req,
-                         (uint32_t *)sc->port.phy_stats.decode_buf + id,
-                         sizeof(uint32_t)));
+       rc = SYSCTL_OUT(req,
+                       (uint32_t *)sc->port.phy_stats.decode_buf + id,
+                       sizeof(uint32_t));
+out:
+       SFXGE_PORT_UNLOCK(&sc->port);
+       return (rc);
 }
 
 static void
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