kernel/drivers/net/ethernet/intel/igb/igb_ethtool.c, branch linux-4.3.y

igb: Fix oops caused by missing queue pairing

2015-08-18T21:06:03Z

When initializing igb driver (e.g. 82576, I350), IGB_FLAG_QUEUE_PAIRS is set if adapter->rss_queues exceeds half of max_rss_queues in igb_init_queue_configuration(). On the other hand, IGB_FLAG_QUEUE_PAIRS is not set even if the number of queues exceeds half of max_combined in igb_set_channels() when changing the number of queues by "ethtool -L". In this case, if numvecs is larger than MAX_MSIX_ENTRIES (10), the size of adapter->msix_entries[], an overflow can occur in igb_set_interrupt_capability(), which in turn leads to an oops. Fix this problem as follows: - When changing the number of queues by "ethtool -L", set IGB_FLAG_QUEUE_PAIRS in the same way as initializing igb driver. - When increasing the size of q_vector, reallocate it appropriately. (With IGB_FLAG_QUEUE_PAIRS set, the size of q_vector gets larger.) Another possible way to fix this problem is to cap the queues at its initial number, which is the number of the initial online cpus. But this is not the optimal way because we cannot increase queues when another cpu becomes online. Note that before commit cd14ef54d25b ("igb: Change to use statically allocated array for MSIx entries"), this problem did not cause oops but just made the number of queues become 1 because of entering msi_only mode in igb_set_interrupt_capability(). Fixes: 907b7835799f ("igb: Add ethtool support to configure number of channels") CC: stable Signed-off-by: Shota Suzuki Tested-by: Aaron Brown Signed-off-by: Jeff Kirsher

igb: report unsupported ethtool settings in set_coalesce

2015-07-23T12:06:14Z

There are many settings possible using ethtool -C/--coalesce, but not all of them are supported in igb. Report failure when an unsupported option is set. Signed-off-by: Todd Fujinaka Tested-by: Aaron Brown Signed-off-by: Jeff Kirsher

igb: only report generic filters in get_ts_info

2015-07-18T02:59:05Z

Signed-off-by: Jacob Keller Acked-by: Richard Cochran Tested-by: Aaron Brown Signed-off-by: Jeff Kirsher

ethtool: Support for configurable RSS hash function

2014-12-09T02:07:10Z

This patch extends the set/get_rxfh ethtool-options for getting or setting the RSS hash function. It modifies drivers implementation of set/get_rxfh accordingly. This change also delegates the responsibility of checking whether a modification to a certain RX flow hash parameter is supported to the driver implementation of set_rxfh. User-kernel API is done through the new hfunc bitmask field in the ethtool_rxfh struct. A bit set in the hfunc field is corresponding to an index in the new string-set ETH_SS_RSS_HASH_FUNCS. Got approval from most of the relevant driver maintainers that their driver is using Toeplitz, and for the few that didn't answered, also assumed it is Toeplitz. Cc: Tom Lendacky Cc: Ariel Elior Cc: Prashant Sreedharan Cc: Michael Chan Cc: Hariprasad S Cc: Sathya Perla Cc: Subbu Seetharaman Cc: Ajit Khaparde Cc: Jeff Kirsher Cc: Jesse Brandeburg Cc: Bruce Allan Cc: Carolyn Wyborny Cc: Don Skidmore Cc: Greg Rose Cc: Matthew Vick Cc: John Ronciak Cc: Mitch Williams Cc: Amir Vadai Cc: Solarflare linux maintainers Cc: Shradha Shah Cc: Shreyas Bhatewara Cc: "VMware, Inc." Cc: Ben Hutchings Signed-off-by: Eyal Perry Signed-off-by: Amir Vadai Signed-off-by: David S. Miller

igb: add flags to set eee advertisement mode

2014-09-06T12:00:39Z

Change e1000_set_eee and e1000_set_eee_i35(0|4) to allow changes in the advertised EEE speeds from ethtool. Adds two boolean flags to e1000_set_eee_i35(0|4) to pass in advertised speed data. Signed-off-by: Todd Fujinaka Tested-by: Aaron Brown Signed-off-by: Jeff Kirsher

igb: unhide invariant returns

2014-06-11T15:45:48Z

Return a 0 directly rather than a constant. Reported-by: Peter Senna Tschudin Signed-off-by: Todd Fujinaka Tested-by: Aaron Brown Signed-off-by: Jeff Kirsher

net: use ethtool_cmd_speed_set helper to set ethtool speed value

2014-06-06T23:24:07Z

Signed-off-by: Jiri Pirko Signed-off-by: David S. Miller

net: use SPEED_UNKNOWN and DUPLEX_UNKNOWN when appropriate

2014-06-06T23:24:07Z

Signed-off-by: Jiri Pirko Signed-off-by: David S. Miller

igb: use mac loopback for i354 backplane

2014-06-04T06:57:45Z

We can't know what PHY is to be used for i354 backplane, so use MAC loopback for ethtool tests. Signed-off-by: Todd Fujinaka Tested-by: Aaron Brown Signed-off-by: Jeff Kirsher

ethtool: Replace ethtool_ops::{get,set}_rxfh_indir() with {get,set}_rxfh()

2014-06-03T01:42:44Z

ETHTOOL_{G,S}RXFHINDIR and ETHTOOL_{G,S}RSSH should work for drivers regardless of whether they expose the hash key, unless you try to set a hash key for a driver that doesn't expose it. Signed-off-by: Ben Hutchings Acked-by: Jeff Kirsher