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kernel: improve skb hash on the mtk ethernet driver

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The PPE only provides a 14 bit hash, however many uses of the skb hash
expect the hash to use the full 32 bit range.
Use jhash to extend the hash to the full size

Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Felix Fietkau 2020-12-18 17:10:04 +01:00
parent fca0eb2d92
commit 6244b0b6c9
5 changed files with 35 additions and 25 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
target/linux/generic/pending-5.4/770-13-net-ethernet-mtk_eth_soc-fix-parsing-packets-in-GDM.patch
View File

@ -18,15 +18,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
#include "mtk_eth_soc.h"
@@ -1246,6 +1247,7 @@ static int mtk_poll_rx(struct napi_struc
unsigned int pktlen;
dma_addr_t dma_addr;
int mac;
+ u16 hash;
ring = mtk_get_rx_ring(eth);
if (unlikely(!ring))
@@ -1259,13 +1261,12 @@ static int mtk_poll_rx(struct napi_struc
@@ -1259,13 +1260,12 @@ static int mtk_poll_rx(struct napi_struc
break;
/* find out which mac the packet come from. values start at 1 */
@ -45,7 +37,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
if (unlikely(mac < 0 || mac >= MTK_MAC_COUNT ||
!eth->netdev[mac]))
@@ -2247,6 +2248,9 @@ static void mtk_gdm_config(struct mtk_et
@@ -2247,6 +2247,9 @@ static void mtk_gdm_config(struct mtk_et
val |= config;

22
target/linux/generic/pending-5.4/770-14-net-ethernet-mtk_eth_soc-set-PPE-flow-hash-as-skb-ha.patch
View File

@ -10,13 +10,31 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -1316,6 +1316,10 @@ static int mtk_poll_rx(struct napi_struc
@@ -19,6 +19,7 @@
#include <linux/interrupt.h>
#include <linux/pinctrl/devinfo.h>
#include <linux/phylink.h>
+#include <linux/jhash.h>
#include <net/dsa.h>
#include "mtk_eth_soc.h"
@@ -1246,6 +1247,7 @@ static int mtk_poll_rx(struct napi_struc
struct net_device *netdev;
unsigned int pktlen;
dma_addr_t dma_addr;
+ u32 hash;
int mac;
ring = mtk_get_rx_ring(eth);
@@ -1315,6 +1317,12 @@ static int mtk_poll_rx(struct napi_struc
skb->protocol = eth_type_trans(skb, netdev);
bytes += pktlen;
+ hash = trxd.rxd4 & GENMASK(13, 0);
+ if (hash != GENMASK(13, 0))
+ if (hash != GENMASK(13, 0)) {
+ hash = jhash_1word(hash, 0);
+ skb_set_hash(skb, hash, PKT_HASH_TYPE_L4);
+ }
+
if (netdev->features & NETIF_F_HW_VLAN_CTAG_RX &&
(trxd.rxd2 & RX_DMA_VTAG))

10
target/linux/generic/pending-5.4/770-15-net-ethernet-mediatek-mtk_eth_soc-add-support-for-in.patch
View File

@ -24,7 +24,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
+mtk_eth-y := mtk_eth_soc.o mtk_sgmii.o mtk_eth_path.o mtk_ppe.o
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -2277,12 +2277,17 @@ static int mtk_open(struct net_device *d
@@ -2280,12 +2280,17 @@ static int mtk_open(struct net_device *d
/* we run 2 netdevs on the same dma ring so we only bring it up once */
if (!refcount_read(&eth->dma_refcnt)) {
@ -44,7 +44,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
napi_enable(&eth->tx_napi);
napi_enable(&eth->rx_napi);
@@ -2352,6 +2357,9 @@ static int mtk_stop(struct net_device *d
@@ -2355,6 +2360,9 @@ static int mtk_stop(struct net_device *d
mtk_dma_free(eth);
@ -54,7 +54,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
return 0;
}
@@ -3141,6 +3149,13 @@ static int mtk_probe(struct platform_dev
@@ -3144,6 +3152,13 @@ static int mtk_probe(struct platform_dev
goto err_free_dev;
}
@ -68,7 +68,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
for (i = 0; i < MTK_MAX_DEVS; i++) {
if (!eth->netdev[i])
continue;
@@ -3215,6 +3230,7 @@ static const struct mtk_soc_data mt7621_
@@ -3218,6 +3233,7 @@ static const struct mtk_soc_data mt7621_
.hw_features = MTK_HW_FEATURES,
.required_clks = MT7621_CLKS_BITMAP,
.required_pctl = false,
@ -76,7 +76,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
};
static const struct mtk_soc_data mt7622_data = {
@@ -3223,6 +3239,7 @@ static const struct mtk_soc_data mt7622_
@@ -3226,6 +3242,7 @@ static const struct mtk_soc_data mt7622_
.hw_features = MTK_HW_FEATURES,
.required_clks = MT7622_CLKS_BITMAP,
.required_pctl = false,

12
target/linux/generic/pending-5.4/770-16-net-ethernet-mediatek-mtk_eth_soc-add-flow-offloadin.patch
View File

@ -20,16 +20,16 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
+mtk_eth-y := mtk_eth_soc.o mtk_sgmii.o mtk_eth_path.o mtk_ppe.o mtk_ppe_debugfs.o mtk_offload.o
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -19,6 +19,8 @@
#include <linux/interrupt.h>
@@ -20,6 +20,8 @@
#include <linux/pinctrl/devinfo.h>
#include <linux/phylink.h>
#include <linux/jhash.h>
+#include <linux/netfilter.h>
+#include <net/netfilter/nf_flow_table.h>
#include <net/dsa.h>
#include "mtk_eth_soc.h"
@@ -1324,8 +1326,12 @@ static int mtk_poll_rx(struct napi_struc
@@ -1327,8 +1329,12 @@ static int mtk_poll_rx(struct napi_struc
(trxd.rxd2 & RX_DMA_VTAG))
__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q),
RX_DMA_VID(trxd.rxd3));
@ -44,7 +44,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
skip_rx:
ring->data[idx] = new_data;
@@ -2858,6 +2864,25 @@ static int mtk_set_rxnfc(struct net_devi
@@ -2861,6 +2867,25 @@ static int mtk_set_rxnfc(struct net_devi
return ret;
}
@ -70,7 +70,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
static const struct ethtool_ops mtk_ethtool_ops = {
.get_link_ksettings = mtk_get_link_ksettings,
.set_link_ksettings = mtk_set_link_ksettings,
@@ -2889,6 +2914,7 @@ static const struct net_device_ops mtk_n
@@ -2892,6 +2917,7 @@ static const struct net_device_ops mtk_n
#ifdef CONFIG_NET_POLL_CONTROLLER
.ndo_poll_controller = mtk_poll_controller,
#endif
@ -78,7 +78,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
};
static int mtk_add_mac(struct mtk_eth *eth, struct device_node *np)
@@ -3154,6 +3180,10 @@ static int mtk_probe(struct platform_dev
@@ -3157,6 +3183,10 @@ static int mtk_probe(struct platform_dev
eth->base + MTK_ETH_PPE_BASE, 2);
if (err)
goto err_free_dev;

4
target/linux/mediatek/patches-5.4/1011-net-ethernet-mtk_eth_soc-add-support-for-coherent-DM.patch
View File

@ -37,7 +37,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
#include <linux/mfd/syscon.h>
#include <linux/regmap.h>
#include <linux/clk.h>
@@ -2482,6 +2483,13 @@ static int mtk_hw_init(struct mtk_eth *e
@@ -2485,6 +2486,13 @@ static int mtk_hw_init(struct mtk_eth *e
if (ret)
goto err_disable_pm;
@ -51,7 +51,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
if (MTK_HAS_CAPS(eth->soc->caps, MTK_SOC_MT7628)) {
ret = device_reset(eth->dev);
if (ret) {
@@ -3080,6 +3088,16 @@ static int mtk_probe(struct platform_dev
@@ -3083,6 +3091,16 @@ static int mtk_probe(struct platform_dev
}
}