diff options
| author | Aleksander Jan Bajkowski <olek2@wp.pl> | 2022-03-05 12:54:48 +0100 |
|---|---|---|
| committer | Petr Štetiar <ynezz@true.cz> | 2022-03-08 18:33:42 +0100 |
| commit | c46621b3f3fff89cce4dd5e24bd52a4337e44378 (patch) | |
| tree | b6b2c7ab30ecf451ce9212e43035addab7fbde08 /target/linux/lantiq/patches-5.10/0714-v5.17-net-lantiq_xrx200-increase-napi-poll-weigth.patch | |
| parent | 98113220fa87019c01dfcf08f41730f97323858a (diff) | |
| download | upstream-c46621b3f3fff89cce4dd5e24bd52a4337e44378.tar.gz upstream-c46621b3f3fff89cce4dd5e24bd52a4337e44378.tar.bz2 upstream-c46621b3f3fff89cce4dd5e24bd52a4337e44378.zip | |
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.patch | 32 |
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); + |