From: Måns Rullgård <m...@mansr.com> Date: Wed, 11 Nov 2015 18:25:05 +0000
> If the TX DMA channel is idle when start_xmit is called, it can be > started immediately. Checking the DMA status and starting it if > idle has to be done atomically somehow. ->ndo_start_xmit() is guaranteed to be invoked atomically, protected by the TX queue spinlock. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
