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be2net: Fix to use 32-bit stats to report rx_drops_no_fragment 

Only BE devices provide 16-bit counter for rx_drops_no_fragment.
All other devices provide a 32-bit counter for this stat.
Use the 32-bit value where available.

Signed-off-by: Ajit Khaparde <ajit.khaparde@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ajit Khaparde 2013-05-01 09:37:27 +00:00 committed by David S. Miller
parent bbdc42f814
commit a6c578ef9b
1 changed files with 17 additions and 6 deletions
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23
drivers/net/ethernet/emulex/benet/be_main.c
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@ -471,11 +471,26 @@ static void accumulate_16bit_val(u32 *acc, u16 val)
ACCESS_ONCE(*acc) = newacc;
}
void populate_erx_stats(struct be_adapter *adapter,
struct be_rx_obj *rxo,
u32 erx_stat)
{
if (!BEx_chip(adapter))
rx_stats(rxo)->rx_drops_no_frags = erx_stat;
else
/* below erx HW counter can actually wrap around after
* 65535. Driver accumulates a 32-bit value
*/
accumulate_16bit_val(&rx_stats(rxo)->rx_drops_no_frags,
(u16)erx_stat);
}
void be_parse_stats(struct be_adapter *adapter)
{
struct be_erx_stats_v1 *erx = be_erx_stats_from_cmd(adapter);
struct be_rx_obj *rxo;
int i;
u32 erx_stat;
if (lancer_chip(adapter)) {
populate_lancer_stats(adapter);
@ -488,12 +503,8 @@ void be_parse_stats(struct be_adapter *adapter)
/* as erx_v1 is longer than v0, ok to use v1 for v0 access */
for_all_rx_queues(adapter, rxo, i) {
/* below erx HW counter can actually wrap around after
* 65535. Driver accumulates a 32-bit value
*/
accumulate_16bit_val(&rx_stats(rxo)->rx_drops_no_frags,
(u16)erx->rx_drops_no_fragments \
[rxo->q.id]);
erx_stat = erx->rx_drops_no_fragments[rxo->q.id];
populate_erx_stats(adapter, rxo, erx_stat);
}
}
}