bnx2x: fix ring size for 10G functions

Commit c4b86a2f23e0d2d1bb7f45d19c6aef8e69563a0a caused
1G functions to allocate rx rings which were 1/10 of the
size of 10G functions' rx rings.

However, it also caused 10G functions on 5771x boards to
allocate small rings, which limits their possible (default)
rx throughput. This patch causes all 10G functions to use
rings of intended length by default.

Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com>
Signed-off-by: Ariel Elior <ariele@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
index 30f04a389227bbfcb9cdaf29b563c005afbfa26a..24220992413ff95fd391e785b4e9edba221422bc 100644 (file)
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
@@ -3523,15 +3523,18 @@ static int bnx2x_alloc_fp_mem_at(struct bnx2x *bp, int index)
        } else
 #endif
        if (!bp->rx_ring_size) {
-               u32 cfg = SHMEM_RD(bp,
-                            dev_info.port_hw_config[BP_PORT(bp)].default_cfg);
-
                rx_ring_size = MAX_RX_AVAIL/BNX2X_NUM_RX_QUEUES(bp);
 
-               /* Dercease ring size for 1G functions */
-               if ((cfg & PORT_HW_CFG_NET_SERDES_IF_MASK) ==
-                   PORT_HW_CFG_NET_SERDES_IF_SGMII)
-                       rx_ring_size /= 10;
+               if (CHIP_IS_E3(bp)) {
+                       u32 cfg = SHMEM_RD(bp,
+                                          dev_info.port_hw_config[BP_PORT(bp)].
+                                          default_cfg);
+
+                       /* Decrease ring size for 1G functions */
+                       if ((cfg & PORT_HW_CFG_NET_SERDES_IF_MASK) ==
+                           PORT_HW_CFG_NET_SERDES_IF_SGMII)
+                               rx_ring_size /= 10;
+               }
 
                /* allocate at least number of buffers required by FW */
                rx_ring_size = max_t(int, bp->disable_tpa ? MIN_RX_SIZE_NONTPA :