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fm10k: add statistics for actual DWORD count of mbmem mailbox 

A previous bug was uncovered by addition of a debug stat to indicate the
actual number of DWORDS we pulled from the mbmem. It turned out this was
not the same as the tx_dwords counter. While the previous bug fix should
have corrected this in all cases, add some debug stats that count the
number of DWORDs pushed or pulled from the mbmem. A future debugger may
take advantage of this statistic for debugging purposes. Since we're
modifying fm10k_mbx.h, update the copyright year as well.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Reviewed-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Krishneil Singh <Krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Jacob Keller 2015-10-16 10:57:02 -07:00 committed by Jeff Kirsher
parent cdf32c94bd
commit 17d39fac08
3 changed files with 9 additions and 1 deletions
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2
drivers/net/ethernet/intel/fm10k/fm10k_ethtool.c
View File

@ -114,9 +114,11 @@ static const struct fm10k_stats fm10k_gstrings_mbx_stats[] = {
FM10K_MBX_STAT("mbx_tx_oversized", tx_dropped),
FM10K_MBX_STAT("mbx_tx_messages", tx_messages),
FM10K_MBX_STAT("mbx_tx_dwords", tx_dwords),
FM10K_MBX_STAT("mbx_tx_mbmem_pulled", tx_mbmem_pulled),
FM10K_MBX_STAT("mbx_rx_messages", rx_messages),
FM10K_MBX_STAT("mbx_rx_dwords", rx_dwords),
FM10K_MBX_STAT("mbx_rx_parse_err", rx_parse_err),
FM10K_MBX_STAT("mbx_rx_mbmem_pushed", rx_mbmem_pushed),
};
#define FM10K_GLOBAL_STATS_LEN ARRAY_SIZE(fm10k_gstrings_global_stats)

4
drivers/net/ethernet/intel/fm10k/fm10k_mbx.c
View File

@ -375,6 +375,8 @@ static void fm10k_mbx_write_copy(struct fm10k_hw *hw,
if (!tail)
tail++;
mbx->tx_mbmem_pulled++;
/* write message to hardware FIFO */
fm10k_write_reg(hw, mbmem + tail++, *(head++));
} while (--len && --end);
@ -459,6 +461,8 @@ static void fm10k_mbx_read_copy(struct fm10k_hw *hw,
if (!head)
head++;
mbx->rx_mbmem_pushed++;
/* read message from hardware FIFO */
*(tail++) = fm10k_read_reg(hw, mbmem + head++);
} while (--len && --end);

4
drivers/net/ethernet/intel/fm10k/fm10k_mbx.h
View File

@ -1,5 +1,5 @@
/* Intel Ethernet Switch Host Interface Driver
* Copyright(c) 2013 - 2014 Intel Corporation.
* Copyright(c) 2013 - 2015 Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
@ -291,8 +291,10 @@ struct fm10k_mbx_info {
u64 tx_dropped;
u64 tx_messages;
u64 tx_dwords;
u64 tx_mbmem_pulled;
u64 rx_messages;
u64 rx_dwords;
u64 rx_mbmem_pushed;
u64 rx_parse_err;
/* Buffer to store messages */