2633c65da5
descriptor count gets miscounted on txprobes. The second (and more important) is that transmit stalls should now be fixed. The problem was not due to lack of ring resources but dmamaps. When Jason changed the driver to use pre-allocated maps (instead of the dynamic ones I used), and when there were no more maps, the driver just gave up instead of calling tx_intr to free any transmitted but unreclaimed dma maps. Since there was nothing being transmitted, no transmit interrupts would fire to restore things (and OACTIVE prevented other transmits from happenning). So it stayed starved until another interrupt cause (like a received packet) "woke" it up. |
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