forked from Minki/linux
d4fabcc8e8
During self-tests we use efx_process_channel_now() to handle completion and other events synchronously. This disables interrupts and NAPI processing for the channel in question, but it may still be interrupted by another channel. A single socket may receive packets from multiple net devices or even multiple channels of the same net device, so this can result in deadlock on a socket lock. Receiving packets in process context will also result in incorrect classification by the network cgroup classifier. Therefore, we must only use efx_process_channel_now() in the offline loopback tests (which never deliver packets up the stack) and not for the online interrupt and event tests. For the interrupt test, there is no reason to process events. We only care that an interrupt is raised. For the event test, we want to know whether events have been received, and there may be many events ahead of the one we inject. Therefore remove efx_channel::magic_count and instead test whether efx_channel::eventq_read_ptr advances. This is currently an event queue index and might wrap around to exactly the same value, resulting in a false negative. Therefore move the masking to efx_event() and efx_nic_eventq_read_ack() so that it cannot wrap within the time of the test. The event test also tries to diagnose failures by checking whether an event was delivered without causing an interrupt. Add and use a helper function that only does this. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> |
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| .. | ||
| bitfield.h | ||
| efx.c | ||
| efx.h | ||
| enum.h | ||
| ethtool.c | ||
| falcon_boards.c | ||
| falcon_xmac.c | ||
| falcon.c | ||
| filter.c | ||
| filter.h | ||
| io.h | ||
| Kconfig | ||
| mac.h | ||
| Makefile | ||
| mcdi_mac.c | ||
| mcdi_pcol.h | ||
| mcdi_phy.c | ||
| mcdi.c | ||
| mcdi.h | ||
| mdio_10g.c | ||
| mdio_10g.h | ||
| mtd.c | ||
| net_driver.h | ||
| nic.c | ||
| nic.h | ||
| phy.h | ||
| qt202x_phy.c | ||
| regs.h | ||
| rx.c | ||
| selftest.c | ||
| selftest.h | ||
| siena.c | ||
| spi.h | ||
| tenxpress.c | ||
| tx.c | ||
| txc43128_phy.c | ||
| workarounds.h | ||