kernel/git/stable/linux.git/drivers/net/sfc/selftest.c, branch master

sfc: Move the Solarflare drivers

2011-08-11T09:33:50+00:00

Moves the Solarflare drivers into drivers/net/ethernet/sfc/ and make the necessary Kconfig and Makefile changes. CC: Steve Hodgson CC: Ben Hutchings Signed-off-by: Jeff Kirsher

sfc: Use netif_device_{detach,attach}() around reset and self-test

2011-05-16T22:34:28+00:00

We need to keep the TX queues stopped throughout a reset, without triggering the TX watchdog and regardless of the link state. The proper way to do this is to use netif_device_{detach,attach}() just as we do around suspend/resume, rather than the current bodge of faking link-down. Since we also need to do this during an offline self-test and we perform a reset during that, add these function calls outside of efx_reset_down() and efx_reset_up(). Signed-off-by: Ben Hutchings

sfc: Do not use efx_process_channel_now() in online self-test

2011-04-12T15:37:54+00:00

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

sfc: Stop the TX queues during loopback self-tests

2011-04-12T15:20:25+00:00

If the TX queues are running during loopback self tests, host traffic gets looped back which causes the test to fail. Avoid restarting the TX queues after the port reset so that any packets sent by the host get held back until after the tests have completed. [bwh: Also wake all TX queues at the end of self-tests.] Signed-off-by: Ben Hutchings

sfc: Update copyright dates

2011-02-28T23:57:24+00:00

Signed-off-by: Ben Hutchings

sfc: Add TX queues for high-priority traffic

2011-02-15T19:45:35+00:00

Implement the ndo_setup_tc() operation with 2 traffic classes. Current Solarstorm controllers do not implement TX queue priority, but they do allow queues to be 'paced' with an enforced delay between packets. Paced and unpaced queues are scheduled in round-robin within two separate hardware bins (paced queues with a large delay may be placed into a third bin temporarily, but we won't use that). If there are queues in both bins, the TX scheduler will alternate between them. If we make high-priority queues unpaced and best-effort queues paced, and high-priority queues are mostly empty, a single high-priority queue can then instantly take 50% of the packet rate regardless of how many of the best-effort queues have descriptors outstanding. We do not actually want an enforced delay between packets on best- effort queues, so we set the pace value to a reserved value that actually results in a delay of 0. Signed-off-by: Ben Hutchings

sfc: make functions static

2010-10-21T10:09:43+00:00

Make local functions and variable static. Do some rearrangement of the string table stuff to put it where it gets used. Signed-off-by: Stephen Hemminger Acked-by: Ben Hutchings Signed-off-by: David S. Miller

sfc: Make the dmaq size a run-time setting (rather than compile-time)

2010-09-10T19:27:33+00:00

- Allow the ring size to be specified in non power-of-two sizes (for instance to limit the amount of receive buffers). - Automatically size the event queue. Signed-off-by: Ben Hutchings Signed-off-by: David S. Miller

sfc: Refactor channel and queue lookup and iteration

2010-09-10T19:27:32+00:00

In preparation for changes to the way channels and queue structures are allocated, revise the macros and functions used to look up and iterator over them. - Replace efx_for_each_tx_queue() with iteration over channels then TX queues - Replace efx_for_each_rx_queue() with iteration over channels then RX queues (with one exception, shortly to be removed) - Introduce efx_get_{channel,rx_queue,tx_queue}() functions to look up channels and queues by index - Introduce efx_channel_get_{rx,tx}_queue() functions to look up a channel's queues Signed-off-by: Ben Hutchings Signed-off-by: David S. Miller

sfc: Fix reading of inserted hash

2010-06-26T04:03:30+00:00

The hash appears immediately before the packet data, not at the beginning of the buffer. This means we can easily use negative offsets from the start of packet data, so adjust the data and length at the top of __efx_rx_packet() instead of wherever we consume the hash. Signed-off-by: Ben Hutchings Signed-off-by: David S. Miller