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72 lines
2.5 KiB
Diff
72 lines
2.5 KiB
Diff
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From fc7824df7022869a403c8a5122a55fe73a193466 Mon Sep 17 00:00:00 2001
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From: Camelia Groza <camelia.groza@nxp.com>
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Date: Tue, 29 Oct 2019 16:50:34 +0200
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Subject: [PATCH] sdk_dpaa: ls1043a errata: re-enable SG support and recycling
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With certain limitation, SG frames can be used safely without triggering
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the errata.
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Buffers can be recycled, even after realigning the data.
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Signed-off-by: Camelia Groza <camelia.groza@nxp.com>
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---
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drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth.c | 10 ----------
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drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth.h | 1 -
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drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_sg.c | 9 ---------
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3 files changed, 20 deletions(-)
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--- a/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth.c
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+++ b/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth.c
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@@ -778,16 +778,6 @@ static int dpa_private_netdev_init(struc
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/* Advertise NETIF_F_HW_ACCEL_MQ to avoid Tx timeout warnings */
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net_dev->features |= NETIF_F_HW_ACCEL_MQ;
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-#ifndef CONFIG_PPC
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- /* Due to the A010022 FMan errata, we can not use S/G frames. We need
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- * to stop advertising S/G and GSO support.
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- */
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- if (unlikely(dpaa_errata_a010022)) {
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- net_dev->hw_features &= ~NETIF_F_SG;
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- net_dev->features &= ~NETIF_F_GSO;
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- }
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-#endif
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-
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return dpa_netdev_init(net_dev, mac_addr, tx_timeout);
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}
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--- a/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth.h
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+++ b/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth.h
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@@ -661,7 +661,6 @@ static inline void _dpa_bp_free_pf(void
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#ifndef CONFIG_PPC
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extern bool dpaa_errata_a010022; /* SoC affected by A010022 errata */
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-#define NONREC_MARK 0x01
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#define CROSS_4K(start, size) \
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(((uintptr_t)(start) + (size)) > \
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(((uintptr_t)(start) + 0x1000) & ~0xFFF))
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--- a/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_sg.c
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+++ b/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_sg.c
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@@ -327,12 +327,6 @@ EXPORT_SYMBOL(_dpa_cleanup_tx_fd);
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#ifndef CONFIG_FSL_DPAA_TS
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bool dpa_skb_is_recyclable(struct sk_buff *skb)
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{
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-#ifndef CONFIG_PPC
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- /* Do no recycle skbs realigned by the errata workaround */
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- if (unlikely(dpaa_errata_a010022) && skb->mark == NONREC_MARK)
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- return false;
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-#endif
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-
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/* No recycling possible if skb buffer is kmalloc'ed */
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if (skb->head_frag == 0)
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return false;
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@@ -906,9 +900,6 @@ static struct sk_buff *a010022_realign_s
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skb_set_network_header(nskb, net_offset);
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skb_set_transport_header(nskb, trans_offset);
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- /* We don't want the buffer to be recycled so we mark it accordingly */
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- nskb->mark = NONREC_MARK;
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-
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return nskb;
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err:
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