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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>
This commit is contained in:
Mintz Yuval 2012-02-15 02:10:28 +00:00 committed by David S. Miller
parent afa13b4b94
commit d760fc37b0
1 changed files with 7 additions and 0 deletions
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7
drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
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@ -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);