net/sfc/base: remove MAC stats size define

Signed-off-by: Andy Moreton <amoreton@solarflare.com>
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>

diff --git a/drivers/net/sfc/base/efx.h b/drivers/net/sfc/base/efx.h
index 09926ba..5cb3fd0 100644 (file)
--- a/drivers/net/sfc/base/efx.h
+++ b/drivers/net/sfc/base/efx.h
@@ -561,7 +561,6 @@ efx_mac_stats_get_mask(
        ((_mask)[(_stat) / EFX_MAC_STATS_MASK_BITS_PER_PAGE] &  \
            (1ULL << ((_stat) & (EFX_MAC_STATS_MASK_BITS_PER_PAGE - 1))))
 
-#define        EFX_MAC_STATS_SIZE 0x400
 
 extern __checkReturn                   efx_rc_t
 efx_mac_stats_clear(
@@ -570,8 +569,8 @@ efx_mac_stats_clear(
 /*
  * Upload mac statistics supported by the hardware into the given buffer.
  *
- * The reference buffer must be at least %EFX_MAC_STATS_SIZE bytes,
- * and page aligned.
+ * The DMA buffer must be 4Kbyte aligned and sized to hold at least
+ * efx_nic_cfg_t::enc_mac_stats_nstats 64bit counters.
  *
  * The hardware will only DMA statistics that it understands (of course).
  * Drivers should not make any assumptions about which statistics are

diff --git a/drivers/net/sfc/base/siena_mac.c b/drivers/net/sfc/base/siena_mac.c
index f395355..f8857cd 100644 (file)
--- a/drivers/net/sfc/base/siena_mac.c
+++ b/drivers/net/sfc/base/siena_mac.c
@@ -434,7 +434,7 @@ siena_mac_stats_update(
        SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_NODESC_DROPS, &value);
        EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_NODESC_DROP_CNT]), &value);
 
-       EFSYS_DMA_SYNC_FOR_KERNEL(esmp, 0, EFX_MAC_STATS_SIZE);
+       EFSYS_DMA_SYNC_FOR_KERNEL(esmp, 0, EFSYS_MEM_SIZE(esmp));
        EFSYS_MEM_READ_BARRIER();
        SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_GENERATION_START,
                            &generation_start);