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authorAleksander Jan Bajkowski <olek2@wp.pl>2022-03-05 12:54:48 +0100
committerPetr Štetiar <ynezz@true.cz>2022-03-08 18:33:42 +0100
commitc46621b3f3fff89cce4dd5e24bd52a4337e44378 (patch)
treeb6b2c7ab30ecf451ce9212e43035addab7fbde08 /target/linux/lantiq/patches-5.10/0714-v5.17-net-lantiq_xrx200-increase-napi-poll-weigth.patch
parent98113220fa87019c01dfcf08f41730f97323858a (diff)
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lantiq: xrx200: fix use after free bug
The skb->len field is read after the packet is sent to the network stack. In the meantime, skb can be freed. This patch fixes this bug. Signed-off-by: Aleksander Jan Bajkowski <olek2@wp.pl>
Diffstat (limited to 'target/linux/lantiq/patches-5.10/0714-v5.17-net-lantiq_xrx200-increase-napi-poll-weigth.patch')
-rw-r--r--target/linux/lantiq/patches-5.10/0714-v5.17-net-lantiq_xrx200-increase-napi-poll-weigth.patch32
1 files changed, 32 insertions, 0 deletions
diff --git a/target/linux/lantiq/patches-5.10/0714-v5.17-net-lantiq_xrx200-increase-napi-poll-weigth.patch b/target/linux/lantiq/patches-5.10/0714-v5.17-net-lantiq_xrx200-increase-napi-poll-weigth.patch
new file mode 100644
index 0000000000..1fa49f406e
--- /dev/null
+++ b/target/linux/lantiq/patches-5.10/0714-v5.17-net-lantiq_xrx200-increase-napi-poll-weigth.patch
@@ -0,0 +1,32 @@
+From 768818d772d5d4ddc0c7eb2e62848929270ab7a3 Mon Sep 17 00:00:00 2001
+From: Aleksander Jan Bajkowski <olek2@wp.pl>
+Date: Tue, 4 Jan 2022 16:11:43 +0100
+Subject: [PATCH 714/715] net: lantiq_xrx200: increase napi poll weigth
+
+NAT Performance results on BT Home Hub 5A (kernel 5.10.89, mtu 1500):
+
+ Down Up
+Before 545 Mbps 625 Mbps
+After 577 Mbps 648 Mbps
+
+Signed-off-by: Aleksander Jan Bajkowski <olek2@wp.pl>
+Signed-off-by: Jakub Kicinski <kuba@kernel.org>
+---
+ drivers/net/ethernet/lantiq_xrx200.c | 6 ++++--
+ 1 file changed, 4 insertions(+), 2 deletions(-)
+
+--- a/drivers/net/ethernet/lantiq_xrx200.c
++++ b/drivers/net/ethernet/lantiq_xrx200.c
+@@ -606,8 +606,10 @@ static int xrx200_probe(struct platform_
+ PMAC_HD_CTL);
+
+ /* setup NAPI */
+- netif_napi_add(net_dev, &priv->chan_rx.napi, xrx200_poll_rx, 32);
+- netif_tx_napi_add(net_dev, &priv->chan_tx.napi, xrx200_tx_housekeeping, 32);
++ netif_napi_add(net_dev, &priv->chan_rx.napi, xrx200_poll_rx,
++ NAPI_POLL_WEIGHT);
++ netif_tx_napi_add(net_dev, &priv->chan_tx.napi, xrx200_tx_housekeeping,
++ NAPI_POLL_WEIGHT);
+
+ platform_set_drvdata(pdev, priv);
+