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<p class="MsoNormal"><span style="color:#0D0D0D">Function ipoib_endpt_queue requires send lock to be held.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#0D0D0D">ipoib_port_join_mcast calls to __endpt_mgr_ref that calls to ipoib_endpt_queue , but ipoib_port_join_mcast isn’t always send lock protected.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#0D0D0D">Signed off by: Alexander Naslednikov (xalex at mellanox.co.il)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#0D0D0D"><o:p> </o:p></span></p>
<p class="MsoNormal">Index: B:/users/xalex/MLNX_VPI_trunk/ulp/ipoib_NDIS6_CM/kernel/ipoib_adapter.cpp<o:p></o:p></p>
<p class="MsoNormal">===================================================================<o:p></o:p></p>
<p class="MsoNormal">--- B:/users/xalex/MLNX_VPI_trunk/ulp/ipoib_NDIS6_CM/kernel/ipoib_adapter.cpp (revision 7799)<o:p></o:p></p>
<p class="MsoNormal">+++ B:/users/xalex/MLNX_VPI_trunk/ulp/ipoib_NDIS6_CM/kernel/ipoib_adapter.cpp (revision 7800)<o:p></o:p></p>
<p class="MsoNormal">@@ -987,6 +987,8 @@<o:p></o:p></p>
<p class="MsoNormal"> }<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"> /* Add new entries */<o:p></o:p></p>
<p class="MsoNormal">+ /* The lock is important here cause ipoib_endpt_queue will be called later and it requires lock to be held */<o:p></o:p></p>
<p class="MsoNormal">+ cl_spinlock_acquire( &p_port->send_lock );<o:p></o:p></p>
<p class="MsoNormal"> for( i = 0; i < num_macs; i++ )<o:p></o:p></p>
<p class="MsoNormal"> {<o:p></o:p></p>
<p class="MsoNormal"> for( j = 0; j < p_adapter->mcast_array_size; j++ )<o:p></o:p></p>
<p class="MsoNormal">@@ -1009,6 +1011,7 @@<o:p></o:p></p>
<p class="MsoNormal"> ipoib_port_join_mcast( p_port, p_mac_array[i], IB_MC_REC_STATE_FULL_MEMBER );<o:p></o:p></p>
<p class="MsoNormal"> }<o:p></o:p></p>
<p class="MsoNormal"> }<o:p></o:p></p>
<p class="MsoNormal">+ cl_spinlock_release( &p_port->send_lock );<o:p></o:p></p>
<p class="MsoNormal"> }<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"> /* Copy the MAC array. */<o:p></o:p></p>
<p class="MsoNormal">@@ -1316,6 +1319,8 @@<o:p></o:p></p>
<p class="MsoNormal"> }<o:p></o:p></p>
<p class="MsoNormal"> }<o:p></o:p></p>
<p class="MsoNormal"> /* Join all programmed multicast groups. */<o:p></o:p></p>
<p class="MsoNormal">+ /* The lock is important here cause ipoib_endpt_queue will be called later and it requires lock to be held */<o:p></o:p></p>
<p class="MsoNormal">+ cl_spinlock_acquire( &p_adapter->p_port->send_lock );<o:p></o:p></p>
<p class="MsoNormal"> for( i = 0; i < p_adapter->mcast_array_size; i++ )<o:p></o:p></p>
<p class="MsoNormal"> {<o:p></o:p></p>
<p class="MsoNormal"> IPOIB_PRINT_EXIT( TRACE_LEVEL_INFORMATION, IPOIB_DBG_MCAST,<o:p></o:p></p>
<p class="MsoNormal">@@ -1324,7 +1329,8 @@<o:p></o:p></p>
<p class="MsoNormal"> p_adapter->mcast_array[i],<o:p></o:p></p>
<p class="MsoNormal"> IB_MC_REC_STATE_FULL_MEMBER );<o:p></o:p></p>
<p class="MsoNormal"> }<o:p></o:p></p>
<p class="MsoNormal">-<o:p></o:p></p>
<p class="MsoNormal">+ cl_spinlock_release( &p_adapter->p_port->send_lock );<o:p></o:p></p>
<p class="MsoNormal">+ <o:p></o:p></p>
<p class="MsoNormal"> /* Register all existing addresses. */<o:p></o:p></p>
<p class="MsoNormal"> ipoib_reg_addrs( p_adapter );<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b>Alexander (XaleX) Naslednikov<o:p></o:p></b></p>
<p class="MsoNormal"><b>SW Networking Team<o:p></o:p></b></p>
<p class="MsoNormal"><b>Mellanox Technologies<o:p></o:p></b></p>
<p class="MsoNormal"><o:p> </o:p></p>
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