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Commit ef454a95 authored by Sunil Paidimarri's avatar Sunil Paidimarri Committed by Gerrit - the friendly Code Review server
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net: stmmac: disable CRC stripping in SW 



CRC should not be stripped in SW.

Change-Id: Ie3640a6a394dd11a4d37047d789d4a02d0a560bd
Acked-by: default avatarNing Cai <ncai@qti.qualcomm.com>
Signed-off-by: default avatarSunil Paidimarri <hisunil@codeaurora.org>
parent 08d4c1e9

drivers/net/ethernet/stmicro/stmmac/common.h

+1 −0
Original line number Diff line number Diff line
@@ -603,6 +603,7 @@ struct mac_device_info { 
	unsigned int pmt;

	unsigned int ps;

	unsigned int crc_strip_en;

	unsigned int acs_strip_en;

};



struct stmmac_rx_routing {

drivers/net/ethernet/stmicro/stmmac/dwmac4_descs.c

+5 −0
Original line number Diff line number Diff line
@@ -93,6 +93,11 @@ static int dwmac4_wrback_get_rx_status(void *data, struct stmmac_extra_stats *x, 
	if (likely(!(rdes3 & RDES3_LAST_DESCRIPTOR)))

		return discard_frame;



	if (unlikely(!(rdes3 & RDES3_PACKET_LEN_TYPE_MASK))) {

		pr_info("rdes3 = 0xX\n", rdes3);

		ret = llc_snap;

	}



	if (unlikely(rdes3 & RDES3_ERROR_SUMMARY)) {

		if (unlikely(rdes3 & RDES3_GIANT_PACKET))

			stats->rx_length_errors++;

drivers/net/ethernet/stmicro/stmmac/stmmac_main.c

+8 −2
Original line number Diff line number Diff line
@@ -2626,6 +2626,7 @@ static int stmmac_hw_setup(struct net_device *dev, bool init_ptp) 
		}

	}

	priv->hw->crc_strip_en = priv->plat->crc_strip_en;

	priv->hw->acs_strip_en = 0;



	/* Initialize the MAC Core */

	priv->hw->mac->core_init(priv->hw, dev);
@@ -3608,8 +3609,13 @@ static int stmmac_rx(struct stmmac_priv *priv, int limit, u32 queue) 
			 * feature is always disabled and packets need to be

			 * stripped manually.

			 */

			if (unlikely(priv->synopsys_id >= DWMAC_CORE_4_00) ||

			    unlikely(status != llc_snap))

			if ((likely(priv->synopsys_id >= DWMAC_CORE_4_00) &&

			     ((unlikely(!priv->hw->crc_strip_en) &&

			       status != llc_snap) ||

			      (unlikely(!priv->hw->acs_strip_en) &&

			       status == llc_snap))) ||

			    (unlikely(priv->synopsys_id < DWMAC_CORE_4_00) &&

			     unlikely(status != llc_snap)))

				frame_len -= ETH_FCS_LEN;



			if (netif_msg_rx_status(priv)) {