Release 4.10 drivers/net/ethernet/stmicro/stmmac/enh_desc.c

Directory: drivers/net/ethernet/stmicro/stmmac
/*******************************************************************************
  This contains the functions to handle the enhanced descriptors.

  Copyright (C) 2007-2014  STMicroelectronics Ltd

  This program is free software; you can redistribute it and/or modify it
  under the terms and conditions of the GNU General Public License,
  version 2, as published by the Free Software Foundation.

  This program is distributed in the hope it will be useful, but WITHOUT
  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  more details.

  You should have received a copy of the GNU General Public License along with
  this program; if not, write to the Free Software Foundation, Inc.,
  51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.

  The full GNU General Public License is included in this distribution in
  the file called "COPYING".

  Author: Giuseppe Cavallaro <peppe.cavallaro@st.com>
*******************************************************************************/

#include <linux/stmmac.h>
#include "common.h"
#include "descs_com.h"



static int enh_desc_get_tx_status(void *data, struct stmmac_extra_stats *x,
				  struct dma_desc *p, void __iomem *ioaddr)
{
	struct net_device_stats *stats = (struct net_device_stats *)data;
	unsigned int tdes0 = le32_to_cpu(p->des0);
	int ret = tx_done;

	/* Get tx owner first */
	if (unlikely(tdes0 & ETDES0_OWN))
		return tx_dma_own;

	/* Verify tx error by looking at the last segment. */
	if (likely(!(tdes0 & ETDES0_LAST_SEGMENT)))
		return tx_not_ls;

	if (unlikely(tdes0 & ETDES0_ERROR_SUMMARY)) {
		if (unlikely(tdes0 & ETDES0_JABBER_TIMEOUT))
			x->tx_jabber++;

		if (unlikely(tdes0 & ETDES0_FRAME_FLUSHED)) {
			x->tx_frame_flushed++;
			dwmac_dma_flush_tx_fifo(ioaddr);
		}

		if (unlikely(tdes0 & ETDES0_LOSS_CARRIER)) {
			x->tx_losscarrier++;
			stats->tx_carrier_errors++;
		}
		if (unlikely(tdes0 & ETDES0_NO_CARRIER)) {
			x->tx_carrier++;
			stats->tx_carrier_errors++;
		}
		if (unlikely((tdes0 & ETDES0_LATE_COLLISION) ||
			     (tdes0 & ETDES0_EXCESSIVE_COLLISIONS)))
			stats->collisions +=
				(tdes0 & ETDES0_COLLISION_COUNT_MASK) >> 3;

		if (unlikely(tdes0 & ETDES0_EXCESSIVE_DEFERRAL))
			x->tx_deferred++;

		if (unlikely(tdes0 & ETDES0_UNDERFLOW_ERROR)) {
			dwmac_dma_flush_tx_fifo(ioaddr);
			x->tx_underflow++;
		}

		if (unlikely(tdes0 & ETDES0_IP_HEADER_ERROR))
			x->tx_ip_header_error++;

		if (unlikely(tdes0 & ETDES0_PAYLOAD_ERROR)) {
			x->tx_payload_error++;
			dwmac_dma_flush_tx_fifo(ioaddr);
		}

		ret = tx_err;
	}

	if (unlikely(tdes0 & ETDES0_DEFERRED))
		x->tx_deferred++;

#ifdef STMMAC_VLAN_TAG_USED
	if (tdes0 & ETDES0_VLAN_FRAME)
		x->tx_vlan++;
#endif

	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
giuseppe cavallaro giuseppe cavallaro 272 88.89% 4 66.67%
fabrice gasnier fabrice gasnier 31 10.13% 1 16.67%
michael weiser michael weiser 3 0.98% 1 16.67%
Total 306 100.00% 6 100.00%



static int enh_desc_get_tx_len(struct dma_desc *p)
{
	return (le32_to_cpu(p->des1) & ETDES1_BUFFER1_SIZE_MASK);
}

Contributors
Person Tokens Prop Commits CommitProp
giuseppe cavallaro giuseppe cavallaro 20 86.96% 2 66.67%
michael weiser michael weiser 3 13.04% 1 33.33%
Total 23 100.00% 3 100.00%



static int enh_desc_coe_rdes0(int ipc_err, int type, int payload_err)
{
	int ret = good_frame;
	u32 status = (type << 2 | ipc_err << 1 | payload_err) & 0x7;

	/* bits 5 7 0 | Frame status
         * ----------------------------------------------------------
         *      0 0 0 | IEEE 802.3 Type frame (length < 1536 octects)
         *      1 0 0 | IPv4/6 No CSUM errorS.
         *      1 0 1 | IPv4/6 CSUM PAYLOAD error
         *      1 1 0 | IPv4/6 CSUM IP HR error
         *      1 1 1 | IPv4/6 IP PAYLOAD AND HEADER errorS
         *      0 0 1 | IPv4/6 unsupported IP PAYLOAD
         *      0 1 1 | COE bypassed.. no IPv4/6 frame
         *      0 1 0 | Reserved.
         */
	if (status == 0x0)
		ret = llc_snap;
	else if (status == 0x4)
		ret = good_frame;
	else if (status == 0x5)
		ret = csum_none;
	else if (status == 0x6)
		ret = csum_none;
	else if (status == 0x7)
		ret = csum_none;
	else if (status == 0x1)
		ret = discard_frame;
	else if (status == 0x3)
		ret = discard_frame;
	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
giuseppe cavallaro giuseppe cavallaro 117 100.00% 2 100.00%
Total 117 100.00% 2 100.00%



static void enh_desc_get_ext_status(void *data, struct stmmac_extra_stats *x,
				    struct dma_extended_desc *p)
{
	unsigned int rdes0 = le32_to_cpu(p->basic.des0);
	unsigned int rdes4 = le32_to_cpu(p->des4);

	if (unlikely(rdes0 & ERDES0_RX_MAC_ADDR)) {
		int message_type = (rdes4 & ERDES4_MSG_TYPE_MASK) >> 8;

		if (rdes4 & ERDES4_IP_HDR_ERR)
			x->ip_hdr_err++;
		if (rdes4 & ERDES4_IP_PAYLOAD_ERR)
			x->ip_payload_err++;
		if (rdes4 & ERDES4_IP_CSUM_BYPASSED)
			x->ip_csum_bypassed++;
		if (rdes4 & ERDES4_IPV4_PKT_RCVD)
			x->ipv4_pkt_rcvd++;
		if (rdes4 & ERDES4_IPV6_PKT_RCVD)
			x->ipv6_pkt_rcvd++;

		if (message_type == RDES_EXT_NO_PTP)
			x->no_ptp_rx_msg_type_ext++;
		else if (message_type == RDES_EXT_SYNC)
			x->ptp_rx_msg_type_sync++;
		else if (message_type == RDES_EXT_FOLLOW_UP)
			x->ptp_rx_msg_type_follow_up++;
		else if (message_type == RDES_EXT_DELAY_REQ)
			x->ptp_rx_msg_type_delay_req++;
		else if (message_type == RDES_EXT_DELAY_RESP)
			x->ptp_rx_msg_type_delay_resp++;
		else if (message_type == RDES_EXT_PDELAY_REQ)
			x->ptp_rx_msg_type_pdelay_req++;
		else if (message_type == RDES_EXT_PDELAY_RESP)
			x->ptp_rx_msg_type_pdelay_resp++;
		else if (message_type == RDES_EXT_PDELAY_FOLLOW_UP)
			x->ptp_rx_msg_type_pdelay_follow_up++;
		else if (message_type == RDES_PTP_ANNOUNCE)
			x->ptp_rx_msg_type_announce++;
		else if (message_type == RDES_PTP_MANAGEMENT)
			x->ptp_rx_msg_type_management++;
		else if (message_type == RDES_PTP_PKT_RESERVED_TYPE)
			x->ptp_rx_msg_pkt_reserved_type++;

		if (rdes4 & ERDES4_PTP_FRAME_TYPE)
			x->ptp_frame_type++;
		if (rdes4 & ERDES4_PTP_VER)
			x->ptp_ver++;
		if (rdes4 & ERDES4_TIMESTAMP_DROPPED)
			x->timestamp_dropped++;
		if (rdes4 & ERDES4_AV_PKT_RCVD)
			x->av_pkt_rcvd++;
		if (rdes4 & ERDES4_AV_TAGGED_PKT_RCVD)
			x->av_tagged_pkt_rcvd++;
		if ((rdes4 & ERDES4_VLAN_TAG_PRI_VAL_MASK) >> 18)
			x->vlan_tag_priority_val++;
		if (rdes4 & ERDES4_L3_FILTER_MATCH)
			x->l3_filter_match++;
		if (rdes4 & ERDES4_L4_FILTER_MATCH)
			x->l4_filter_match++;
		if ((rdes4 & ERDES4_L3_L4_FILT_NO_MATCH_MASK) >> 26)
			x->l3_l4_filter_no_match++;
	}
}

Contributors
Person Tokens Prop Commits CommitProp
giuseppe cavallaro giuseppe cavallaro 352 98.05% 3 60.00%
michael weiser michael weiser 6 1.67% 1 20.00%
vince bridgers vince bridgers 1 0.28% 1 20.00%
Total 359 100.00% 5 100.00%



static int enh_desc_get_rx_status(void *data, struct stmmac_extra_stats *x,
				  struct dma_desc *p)
{
	struct net_device_stats *stats = (struct net_device_stats *)data;
	unsigned int rdes0 = le32_to_cpu(p->des0);
	int ret = good_frame;

	if (unlikely(rdes0 & RDES0_OWN))
		return dma_own;

	if (unlikely(rdes0 & RDES0_ERROR_SUMMARY)) {
		if (unlikely(rdes0 & RDES0_DESCRIPTOR_ERROR)) {
			x->rx_desc++;
			stats->rx_length_errors++;
		}
		if (unlikely(rdes0 & RDES0_OVERFLOW_ERROR))
			x->rx_gmac_overflow++;

		if (unlikely(rdes0 & RDES0_IPC_CSUM_ERROR))
			pr_err("\tIPC Csum Error/Giant frame\n");

		if (unlikely(rdes0 & RDES0_COLLISION))
			stats->collisions++;
		if (unlikely(rdes0 & RDES0_RECEIVE_WATCHDOG))
			x->rx_watchdog++;

		if (unlikely(rdes0 & RDES0_MII_ERROR))	/* GMII */
			x->rx_mii++;

		if (unlikely(rdes0 & RDES0_CRC_ERROR)) {
			x->rx_crc++;
			stats->rx_crc_errors++;
		}
		ret = discard_frame;
	}

	/* After a payload csum error, the ES bit is set.
         * It doesn't match with the information reported into the databook.
         * At any rate, we need to understand if the CSUM hw computation is ok
         * and report this info to the upper layers. */
	ret = enh_desc_coe_rdes0(!!(rdes0 & RDES0_IPC_CSUM_ERROR),
				 !!(rdes0 & RDES0_FRAME_TYPE),
				 !!(rdes0 & ERDES0_RX_MAC_ADDR));

	if (unlikely(rdes0 & RDES0_DRIBBLING))
		x->dribbling_bit++;

	if (unlikely(rdes0 & RDES0_SA_FILTER_FAIL)) {
		x->sa_rx_filter_fail++;
		ret = discard_frame;
	}
	if (unlikely(rdes0 & RDES0_DA_FILTER_FAIL)) {
		x->da_rx_filter_fail++;
		ret = discard_frame;
	}
	if (unlikely(rdes0 & RDES0_LENGTH_ERROR)) {
		x->rx_length++;
		ret = discard_frame;
	}
#ifdef STMMAC_VLAN_TAG_USED
	if (rdes0 & RDES0_VLAN_TAG)
		x->rx_vlan++;
#endif

	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
giuseppe cavallaro giuseppe cavallaro 296 95.18% 4 66.67%
fabrice gasnier fabrice gasnier 12 3.86% 1 16.67%
michael weiser michael weiser 3 0.96% 1 16.67%
Total 311 100.00% 6 100.00%



static void enh_desc_init_rx_desc(struct dma_desc *p, int disable_rx_ic,
				  int mode, int end)
{
	p->des0 |= cpu_to_le32(RDES0_OWN);
	p->des1 |= cpu_to_le32((BUF_SIZE_8KiB - 1) & ERDES1_BUFFER1_SIZE_MASK);

	if (mode == STMMAC_CHAIN_MODE)
		ehn_desc_rx_set_on_chain(p);
	else
		ehn_desc_rx_set_on_ring(p, end);

	if (disable_rx_ic)
		p->des1 |= cpu_to_le32(ERDES1_DISABLE_IC);
}

Contributors
Person Tokens Prop Commits CommitProp
giuseppe cavallaro giuseppe cavallaro 67 88.16% 5 83.33%
michael weiser michael weiser 9 11.84% 1 16.67%
Total 76 100.00% 6 100.00%



static void enh_desc_init_tx_desc(struct dma_desc *p, int mode, int end)
{
	p->des0 &= cpu_to_le32(~ETDES0_OWN);
	if (mode == STMMAC_CHAIN_MODE)
		enh_desc_end_tx_desc_on_chain(p);
	else
		enh_desc_end_tx_desc_on_ring(p, end);
}

Contributors
Person Tokens Prop Commits CommitProp
giuseppe cavallaro giuseppe cavallaro 43 93.48% 5 83.33%
michael weiser michael weiser 3 6.52% 1 16.67%
Total 46 100.00% 6 100.00%



static int enh_desc_get_tx_owner(struct dma_desc *p)
{
	return (le32_to_cpu(p->des0) & ETDES0_OWN) >> 31;
}

Contributors
Person Tokens Prop Commits CommitProp
giuseppe cavallaro giuseppe cavallaro 22 88.00% 2 66.67%
michael weiser michael weiser 3 12.00% 1 33.33%
Total 25 100.00% 3 100.00%



static void enh_desc_set_tx_owner(struct dma_desc *p)
{
	p->des0 |= cpu_to_le32(ETDES0_OWN);
}

Contributors
Person Tokens Prop Commits CommitProp
giuseppe cavallaro giuseppe cavallaro 17 85.00% 2 66.67%
michael weiser michael weiser 3 15.00% 1 33.33%
Total 20 100.00% 3 100.00%



static void enh_desc_set_rx_owner(struct dma_desc *p)
{
	p->des0 |= cpu_to_le32(RDES0_OWN);
}

Contributors
Person Tokens Prop Commits CommitProp
giuseppe cavallaro giuseppe cavallaro 17 85.00% 2 66.67%
michael weiser michael weiser 3 15.00% 1 33.33%
Total 20 100.00% 3 100.00%



static int enh_desc_get_tx_ls(struct dma_desc *p)
{
	return (le32_to_cpu(p->des0) & ETDES0_LAST_SEGMENT) >> 29;
}

Contributors
Person Tokens Prop Commits CommitProp
giuseppe cavallaro giuseppe cavallaro 22 88.00% 2 66.67%
michael weiser michael weiser 3 12.00% 1 33.33%
Total 25 100.00% 3 100.00%



static void enh_desc_release_tx_desc(struct dma_desc *p, int mode)
{
	int ter = (le32_to_cpu(p->des0) & ETDES0_END_RING) >> 21;

	memset(p, 0, offsetof(struct dma_desc, des2));
	if (mode == STMMAC_CHAIN_MODE)
		enh_desc_end_tx_desc_on_chain(p);
	else
		enh_desc_end_tx_desc_on_ring(p, ter);
}

Contributors
Person Tokens Prop Commits CommitProp
giuseppe cavallaro giuseppe cavallaro 61 95.31% 5 83.33%
michael weiser michael weiser 3 4.69% 1 16.67%
Total 64 100.00% 6 100.00%



static void enh_desc_prepare_tx_desc(struct dma_desc *p, int is_fs, int len,
				     bool csum_flag, int mode, bool tx_own,
				     bool ls)
{
	unsigned int tdes0 = le32_to_cpu(p->des0);

	if (mode == STMMAC_CHAIN_MODE)
		enh_set_tx_desc_len_on_chain(p, len);
	else
		enh_set_tx_desc_len_on_ring(p, len);

	if (is_fs)
		tdes0 |= ETDES0_FIRST_SEGMENT;
	else
		tdes0 &= ~ETDES0_FIRST_SEGMENT;

	if (likely(csum_flag))
		tdes0 |= (TX_CIC_FULL << ETDES0_CHECKSUM_INSERTION_SHIFT);
	else
		tdes0 &= ~(TX_CIC_FULL << ETDES0_CHECKSUM_INSERTION_SHIFT);

	if (ls)
		tdes0 |= ETDES0_LAST_SEGMENT;

	/* Finally set the OWN bit. Later the DMA will start! */
	if (tx_own)
		tdes0 |= ETDES0_OWN;

	if (is_fs & tx_own)
		/* When the own bit, for the first frame, has to be set, all
                 * descriptors for the same frame has to be set before, to
                 * avoid race condition.
                 */
		dma_wmb();

	p->des0 = cpu_to_le32(tdes0);
}

Contributors
Person Tokens Prop Commits CommitProp
giuseppe cavallaro giuseppe cavallaro 129 94.85% 5 71.43%
michael weiser michael weiser 6 4.41% 1 14.29%
pavel machek pavel machek 1 0.74% 1 14.29%
Total 136 100.00% 7 100.00%



static void enh_desc_set_tx_ic(struct dma_desc *p)
{
	p->des0 |= cpu_to_le32(ETDES0_INTERRUPT);
}

Contributors
Person Tokens Prop Commits CommitProp
giuseppe cavallaro giuseppe cavallaro 17 85.00% 3 75.00%
michael weiser michael weiser 3 15.00% 1 25.00%
Total 20 100.00% 4 100.00%



static int enh_desc_get_rx_frame_len(struct dma_desc *p, int rx_coe_type)
{
	unsigned int csum = 0;
	/* The type-1 checksum offload engines append the checksum at
         * the end of frame and the two bytes of checksum are added in
         * the length.
         * Adjust for that in the framelen for type-1 checksum offload
         * engines.
         */
	if (rx_coe_type == STMMAC_RX_COE_TYPE1)
		csum = 2;

	return (((le32_to_cpu(p->des0) & RDES0_FRAME_LEN_MASK)
				>> RDES0_FRAME_LEN_SHIFT) - csum);
}

Contributors
Person Tokens Prop Commits CommitProp
giuseppe cavallaro giuseppe cavallaro 38 74.51% 2 50.00%
deepak sikri deepak sikri 10 19.61% 1 25.00%
michael weiser michael weiser 3 5.88% 1 25.00%
Total 51 100.00% 4 100.00%



static void enh_desc_enable_tx_timestamp(struct dma_desc *p)
{
	p->des0 |= cpu_to_le32(ETDES0_TIME_STAMP_ENABLE);
}

Contributors
Person Tokens Prop Commits CommitProp
rayagond kokatanur rayagond kokatanur 14 70.00% 1 33.33%
giuseppe cavallaro giuseppe cavallaro 3 15.00% 1 33.33%
michael weiser michael weiser 3 15.00% 1 33.33%
Total 20 100.00% 3 100.00%



static int enh_desc_get_tx_timestamp_status(struct dma_desc *p)
{
	return (le32_to_cpu(p->des0) & ETDES0_TIME_STAMP_STATUS) >> 17;
}

Contributors
Person Tokens Prop Commits CommitProp
rayagond kokatanur rayagond kokatanur 15 60.00% 1 33.33%
giuseppe cavallaro giuseppe cavallaro 7 28.00% 1 33.33%
michael weiser michael weiser 3 12.00% 1 33.33%
Total 25 100.00% 3 100.00%



static u64 enh_desc_get_timestamp(void *desc, u32 ats)
{
	u64 ns;

	if (ats) {
		struct dma_extended_desc *p = (struct dma_extended_desc *)desc;
		ns = le32_to_cpu(p->des6);
		/* convert high/sec time stamp value to nanosecond */
		ns += le32_to_cpu(p->des7) * 1000000000ULL;
	} else {
		struct dma_desc *p = (struct dma_desc *)desc;
		ns = le32_to_cpu(p->des2);
		ns += le32_to_cpu(p->des3) * 1000000000ULL;
	}

	return ns;
}

Contributors
Person Tokens Prop Commits CommitProp
rayagond kokatanur rayagond kokatanur 81 87.10% 1 50.00%
michael weiser michael weiser 12 12.90% 1 50.00%
Total 93 100.00% 2 100.00%



static int enh_desc_get_rx_timestamp_status(void *desc, u32 ats)
{
	if (ats) {
		struct dma_extended_desc *p = (struct dma_extended_desc *)desc;
		return (le32_to_cpu(p->basic.des0) & RDES0_IPC_CSUM_ERROR) >> 7;
	} else {
		struct dma_desc *p = (struct dma_desc *)desc;
		if ((le32_to_cpu(p->des2) == 0xffffffff) &&
		    (le32_to_cpu(p->des3) == 0xffffffff))
			/* timestamp is corrupted, hence don't store it */
			return 0;
		else
			return 1;
	}
}

Contributors
Person Tokens Prop Commits CommitProp
rayagond kokatanur rayagond kokatanur 78 82.98% 1 33.33%
michael weiser michael weiser 9 9.57% 1 33.33%
giuseppe cavallaro giuseppe cavallaro 7 7.45% 1 33.33%
Total 94 100.00% 3 100.00%



static void enh_desc_display_ring(void *head, unsigned int size, bool rx)
{
	struct dma_extended_desc *ep = (struct dma_extended_desc *)head;
	int i;

	pr_info("Extended %s descriptor ring:\n", rx ? "RX" : "TX");

	for (i = 0; i < size; i++) {
		u64 x;

		x = *(u64 *)ep;
		pr_info("%d [0x%x]: 0x%x 0x%x 0x%x 0x%x\n",
			i, (unsigned int)virt_to_phys(ep),
			(unsigned int)x, (unsigned int)(x >> 32),
			ep->basic.des2, ep->basic.des3);
		ep++;
	}
	pr_info("\n");
}

Contributors
Person Tokens Prop Commits CommitProp
alexandre torgue alexandre torgue 122 100.00% 1 100.00%
Total 122 100.00% 1 100.00%


const struct stmmac_desc_ops enh_desc_ops = {
	.tx_status = enh_desc_get_tx_status,
	.rx_status = enh_desc_get_rx_status,
	.get_tx_len = enh_desc_get_tx_len,
	.init_rx_desc = enh_desc_init_rx_desc,
	.init_tx_desc = enh_desc_init_tx_desc,
	.get_tx_owner = enh_desc_get_tx_owner,
	.release_tx_desc = enh_desc_release_tx_desc,
	.prepare_tx_desc = enh_desc_prepare_tx_desc,
	.set_tx_ic = enh_desc_set_tx_ic,
	.get_tx_ls = enh_desc_get_tx_ls,
	.set_tx_owner = enh_desc_set_tx_owner,
	.set_rx_owner = enh_desc_set_rx_owner,
	.get_rx_frame_len = enh_desc_get_rx_frame_len,
	.rx_extended_status = enh_desc_get_ext_status,
	.enable_tx_timestamp = enh_desc_enable_tx_timestamp,
	.get_tx_timestamp_status = enh_desc_get_tx_timestamp_status,
	.get_timestamp = enh_desc_get_timestamp,
	.get_rx_timestamp_status = enh_desc_get_rx_timestamp_status,
	.display_ring = enh_desc_display_ring,
};
Overall Contributors
Person Tokens Prop Commits CommitProp
giuseppe cavallaro giuseppe cavallaro 1590 77.00% 14 60.87%
rayagond kokatanur rayagond kokatanur 208 10.07% 1 4.35%
alexandre torgue alexandre torgue 127 6.15% 1 4.35%
michael weiser michael weiser 81 3.92% 1 4.35%
fabrice gasnier fabrice gasnier 43 2.08% 2 8.70%
deepak sikri deepak sikri 13 0.63% 1 4.35%
vince bridgers vince bridgers 1 0.05% 1 4.35%
pavel machek pavel machek 1 0.05% 1 4.35%
stephen hemminger stephen hemminger 1 0.05% 1 4.35%
Total 2065 100.00% 23 100.00%
Directory: drivers/net/ethernet/stmicro/stmmac

Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
	Person	Tokens	Prop	Commits	CommitProp
giuseppe cavallaro	giuseppe cavallaro	272	88.89%	4	66.67%
fabrice gasnier	fabrice gasnier	31	10.13%	1	16.67%
michael weiser	michael weiser	3	0.98%	1	16.67%
	Total	306	100.00%	6	100.00%
cregit-Linux how code gets into the kernel

Release 4.10 drivers/net/ethernet/stmicro/stmmac/enh_desc.c

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