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sfc: Delegate MAC/NIC statistic description to efx_nic_type

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Various hardware statistics that are available for Siena are
unavailable or meaningless for Falcon.  Huntington adds further to the
NIC-type-specific statistics, as it has different MAC blocks from
Falcon/Siena.

All NIC types still provide most statistics by DMA, and use
little-endian byte order.

Therefore:
1. Add some general utility functions for reporting hardware statistics,
   efx_nic_describe_stats() and efx_nic_update_stats().
2. Add an efx_nic_type::describe_stats operation to get the number and
   names of statistics, implemented using efx_nic_describe_stats()
3. Change efx_nic_type::update_stats to store the core statistics
   (struct rtnl_link_stats64) or full statistics (array of u64) in a
   caller-provided buffer.  Use efx_nic_update_stats() to aid in the
   implementation.
4. Rename struct efx_ethtool_stat to struct efx_sw_stat_desc and
   EFX_ETHTOOL_NUM_STATS to EFX_ETHTOOL_SW_STAT_COUNT.
5. Remove efx_nic::mac_stats and struct efx_mac_stats.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
This commit is contained in:
Ben Hutchings
2012-12-14 21:52:56 +00:00
parent b681e57c38
commit cd0ecc9a6d
8 changed files with 497 additions and 388 deletions
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13
drivers/net/ethernet/sfc/mcdi.c
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@@ -236,21 +236,10 @@ static int efx_mcdi_poll(struct efx_nic *efx)
*/
int efx_mcdi_poll_reboot(struct efx_nic *efx)
{
int rc;
if (!efx->mcdi)
return 0;
rc = efx->type->mcdi_poll_reboot(efx);
if (!rc)
return 0;
/* MAC statistics have been cleared on the NIC; clear our copy
* so that efx_update_diff_stat() can continue to work.
*/
memset(&efx->mac_stats, 0, sizeof(efx->mac_stats));
return rc;
return efx->type->mcdi_poll_reboot(efx);
}
static void efx_mcdi_acquire(struct efx_mcdi_iface *mcdi)