bnx2x: allocate smaller Rx rings for 1G functions

Signed-off-by: Yuval Mintz <yuvalmin@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 7f6a1b1be74dad529b51ce7598f641e12d0fc310..5d15efc2a9e2f00440c75540f48469e827273f4e 100644 (file)
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
@@ -3122,9 +3122,16 @@ 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;
+
                /* allocate at least number of buffers required by FW */
                rx_ring_size = max_t(int, bp->disable_tpa ? MIN_RX_SIZE_NONTPA :
                                     MIN_RX_SIZE_TPA, rx_ring_size);