[PATCH net-next v2 4/9] bnxt_en: Reduce maximum ring pages if page size is 64K.
From: Michael Chan <michael.chan@broadcom.com>
Date: 2016-05-15 07:05:06
Subsystem:
broadcom bnxt_en 50 gigabit ethernet driver, networking drivers, the rest · Maintainers:
Michael Chan, Pavan Chebbi, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
The chip supports 4K/8K/64K page sizes for the rings and we try to match it to the CPU PAGE_SIZE. The current page size limits for the rings are based on 4K/8K page size. If the page size is 64K, these limits are too large. Reduce them appropriately. Signed-off-by: Michael Chan <michael.chan@broadcom.com> --- drivers/net/ethernet/broadcom/bnxt/bnxt.h | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
index 355843b..408bb00 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h@@ -425,10 +425,17 @@ struct rx_tpa_end_cmp_ext { #define MAX_TPA 64 +#if (BNXT_PAGE_SHIFT == 16) +#define MAX_RX_PAGES 1 +#define MAX_RX_AGG_PAGES 4 +#define MAX_TX_PAGES 1 +#define MAX_CP_PAGES 8 +#else #define MAX_RX_PAGES 8 #define MAX_RX_AGG_PAGES 32 #define MAX_TX_PAGES 8 #define MAX_CP_PAGES 64 +#endif #define RX_DESC_CNT (BNXT_PAGE_SIZE / sizeof(struct rx_bd)) #define TX_DESC_CNT (BNXT_PAGE_SIZE / sizeof(struct tx_bd))
--
1.8.3.1