version 1.1, 2015/02/05 04:15:56
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version 1.2, 2015/02/05 04:51:58
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Planned construction site. |
<table class="center"> |
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<tr> |
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<th>driver</th> |
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<th>where dmemem is allocated in</th> |
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<th>variations of mutex</th> |
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<th>if_init lock</th> |
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<th>if_start lock</th> |
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<th>if_stop lock</th> |
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<th>if_ioctl lock</th> |
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<th>softint(9)based TX and RX?</th> |
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<th>TX and TX are locked with mutex</th> |
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<th>callout lock</th> |
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<th>notes</th> |
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</tr> |
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<tr> |
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<th>wm(knakahara)</th> |
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<td>in attach()</td> |
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<td>tx, rx, core</td> |
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<td>CORE_LOCK(spin mutex)</td> |
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<td>TX_LOCK(spin mutex) + sc_stopping flag</td> |
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<td>CORE_LOCK(spin mutex)+sc_stopping flag</td> |
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<td>use CORE_LOCK() and TX_LOCK() partially</td> |
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<td>no</td> |
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<td>TX and RX differently</td> |
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<td>TX_LOCK(mutex) and check sc_stopping in the beginning</td> |
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<td></td> |
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</tr> |
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<tr> |
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<th>vioif</th> |
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<td>in attach()</td> |
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<td>tx, rx, ctrl_wait</td> |
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<td>not taken?</td> |
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<td>TX_LOCK(mutex)+sc_stopping check</td> |
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<td>TX, RX + sc_stopping check</td> |
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<td>splnet</td> |
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<td>only RX is softint'ed</td> |
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<td>TX and RX differently</td> |
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<td>callout isn't used</td> |
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<td></td> |
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</tr> |
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<tr> |
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<th>vmxnet</th> |
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<td></td> |
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<td></td> |
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<td></td> |
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<td></td> |
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<td></td> |
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<td></td> |
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<td></td> |
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<td></td> |
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<td></td> |
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<td></td> |
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</tr> |
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<tr> |
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<th>pq3etsec</th> |
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<td>in attach()</td> |
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<td>lock, hwlock, mdio_lock</td> |
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<td>not taken?</td> |
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<td>not taken. Set flag with atomic_or_uint() and call softintr_schedule()</td> |
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<td>not taken?</td> |
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<td>splnet()</td> |
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<td>Yes</td> |
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<td>sc_hwlock is for hard interrput. sc_lock is for software interrupt. TX and RX use the same lock</td> |
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<td>mutex_enter(sc_lock)</td> |
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<td></td> |
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</tr> |
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<tr> |
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<th>bcm53xx_eth</th> |
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<td>in attach()</td> |
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<td>lock, hwlock</td> |
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<td>not taken?</td> |
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<td>not taken. Set flag with atomic_or_uint() and call softintr_schedule()</td> |
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<td>not taken?</td> |
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<td>splnet()</td> |
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<td>Yes</td> |
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<td>sc_hwlock is for hard interrput. sc_lock is for software interrupt. TX and RX use the same lock</td> |
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<td>callout isn't used</td> |
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<td></td> |
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</tr> |
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<tr> |
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<th>ixg</th> |
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<td>in init() for rx jumbo, in attach() for others</td> |
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<td>tx, rx, core</td> |
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<td>CORE_LOCK(adaptive mutex)</td> |
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<td>TX_LOCK(spin mutex)</td> |
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<td>CORE_LOCK(spin mutex)</td> |
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<td>use core lock for init() and set_multi()</td> |
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<td>Yes. Only one time is execulted in the interupt context. If more request exist, softint is issued.</td> |
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<td>TX and RX differently</td> |
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<td>CORE_LOCK() in the beginning</td> |
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<td></td> |
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</tr> |
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<tr> |
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<th>bnx</th> |
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<td>in attach()</td> |
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<td>tx</td> |
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<td>splnet() in the beginning</td> |
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<td>not taken?</td> |
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<td>not taken?</td> |
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<td>splnet() in the beginning</td> |
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<td>No</td> |
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<td>only TX uses mutex</td> |
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<td>splnet() in the beginning</td> |
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<td></td> |
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</tr> |
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<tr> |
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<th>bge</th> |
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<td>in attach()</td> |
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<td>none</td> |
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<td>splnet() in the beginning</td> |
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<td>not taken?</td> |
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<td>not taken?</td> |
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<td>splnet() in the beginning</td> |
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<td>No</td> |
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<td>No</td> |
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<td>splnet() in the beginning</td> |
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<td>mutex is not used at all</td> |
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</tr> |