bnxt_en: Reduce maximum ring pages if page size is 64K.

Orabug: 23221795

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>
Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry picked from commit d0a42d6fc8eaf1b64f62b0bbc3b829b756eacf57)
Signed-off-by: Brian Maly <brian.maly@oracle.com>

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
index fe81e64b390b423661584eae9a1d6f87c059537d..2e4ba72165482b041fe9ef93ba2f2aa08da15e2a 100644 (file)
--- 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))