From f07fe36f22fcf3f3da4e0440dfc5c39516e2cb55 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Sat, 10 Apr 2021 13:20:04 +0200 Subject: kernel: update flow offload patches to upstream version Move patches to backport-5.10, since the series was accepted upstream Signed-off-by: Felix Fietkau --- ...-forwarding-path-from-virtual-netdevice-a.patch | 170 --------------------- 1 file changed, 170 deletions(-) delete mode 100644 target/linux/generic/pending-5.10/640-02-net-resolve-forwarding-path-from-virtual-netdevice-a.patch (limited to 'target/linux/generic/pending-5.10/640-02-net-resolve-forwarding-path-from-virtual-netdevice-a.patch') diff --git a/target/linux/generic/pending-5.10/640-02-net-resolve-forwarding-path-from-virtual-netdevice-a.patch b/target/linux/generic/pending-5.10/640-02-net-resolve-forwarding-path-from-virtual-netdevice-a.patch deleted file mode 100644 index 224831d593..0000000000 --- a/target/linux/generic/pending-5.10/640-02-net-resolve-forwarding-path-from-virtual-netdevice-a.patch +++ /dev/null @@ -1,170 +0,0 @@ -From: Pablo Neira Ayuso -Date: Thu, 4 Mar 2021 23:18:11 +0100 -Subject: [PATCH] net: resolve forwarding path from virtual netdevice and - HW destination address - -This patch adds dev_fill_forward_path() which resolves the path to reach -the real netdevice from the IP forwarding side. This function takes as -input the netdevice and the destination hardware address and it walks -down the devices calling .ndo_fill_forward_path() for each device until -the real device is found. - -For instance, assuming the following topology: - - IP forwarding - / \ - br0 eth0 - / \ - eth1 eth2 - . - . - . - ethX - ab:cd:ef:ab:cd:ef - -where eth1 and eth2 are bridge ports and eth0 provides WAN connectivity. -ethX is the interface in another box which is connected to the eth1 -bridge port. - -For packets going through IP forwarding to br0 whose destination MAC -address is ab:cd:ef:ab:cd:ef, dev_fill_forward_path() provides the -following path: - - br0 -> eth1 - -.ndo_fill_forward_path for br0 looks up at the FDB for the bridge port -from the destination MAC address to get the bridge port eth1. - -This information allows to create a fast path that bypasses the classic -bridge and IP forwarding paths, so packets go directly from the bridge -port eth1 to eth0 (wan interface) and vice versa. - - fast path - .------------------------. - / \ - | IP forwarding | - | / \ \/ - | br0 eth0 - . / \ - -> eth1 eth2 - . - . - . - ethX - ab:cd:ef:ab:cd:ef - -Signed-off-by: Pablo Neira Ayuso ---- - ---- a/include/linux/netdevice.h -+++ b/include/linux/netdevice.h -@@ -827,6 +827,27 @@ typedef u16 (*select_queue_fallback_t)(s - struct sk_buff *skb, - struct net_device *sb_dev); - -+enum net_device_path_type { -+ DEV_PATH_ETHERNET = 0, -+}; -+ -+struct net_device_path { -+ enum net_device_path_type type; -+ const struct net_device *dev; -+}; -+ -+#define NET_DEVICE_PATH_STACK_MAX 5 -+ -+struct net_device_path_stack { -+ int num_paths; -+ struct net_device_path path[NET_DEVICE_PATH_STACK_MAX]; -+}; -+ -+struct net_device_path_ctx { -+ const struct net_device *dev; -+ const u8 *daddr; -+}; -+ - enum tc_setup_type { - TC_SETUP_QDISC_MQPRIO, - TC_SETUP_CLSU32, -@@ -1273,6 +1294,8 @@ struct netdev_net_notifier { - * struct net_device *(*ndo_get_peer_dev)(struct net_device *dev); - * If a device is paired with a peer device, return the peer instance. - * The caller must be under RCU read context. -+ * int (*ndo_fill_forward_path)(struct net_device_path_ctx *ctx, struct net_device_path *path); -+ * Get the forwarding path to reach the real device from the HW destination address - */ - struct net_device_ops { - int (*ndo_init)(struct net_device *dev); -@@ -1481,6 +1504,8 @@ struct net_device_ops { - int (*ndo_tunnel_ctl)(struct net_device *dev, - struct ip_tunnel_parm *p, int cmd); - struct net_device * (*ndo_get_peer_dev)(struct net_device *dev); -+ int (*ndo_fill_forward_path)(struct net_device_path_ctx *ctx, -+ struct net_device_path *path); - }; - - /** -@@ -2795,6 +2820,8 @@ void dev_remove_offload(struct packet_of - - int dev_get_iflink(const struct net_device *dev); - int dev_fill_metadata_dst(struct net_device *dev, struct sk_buff *skb); -+int dev_fill_forward_path(const struct net_device *dev, const u8 *daddr, -+ struct net_device_path_stack *stack); - struct net_device *__dev_get_by_flags(struct net *net, unsigned short flags, - unsigned short mask); - struct net_device *dev_get_by_name(struct net *net, const char *name); ---- a/net/core/dev.c -+++ b/net/core/dev.c -@@ -847,6 +847,52 @@ int dev_fill_metadata_dst(struct net_dev - } - EXPORT_SYMBOL_GPL(dev_fill_metadata_dst); - -+static struct net_device_path *dev_fwd_path(struct net_device_path_stack *stack) -+{ -+ int k = stack->num_paths++; -+ -+ if (WARN_ON_ONCE(k >= NET_DEVICE_PATH_STACK_MAX)) -+ return NULL; -+ -+ return &stack->path[k]; -+} -+ -+int dev_fill_forward_path(const struct net_device *dev, const u8 *daddr, -+ struct net_device_path_stack *stack) -+{ -+ const struct net_device *last_dev; -+ struct net_device_path_ctx ctx = { -+ .dev = dev, -+ .daddr = daddr, -+ }; -+ struct net_device_path *path; -+ int ret = 0; -+ -+ stack->num_paths = 0; -+ while (ctx.dev && ctx.dev->netdev_ops->ndo_fill_forward_path) { -+ last_dev = ctx.dev; -+ path = dev_fwd_path(stack); -+ if (!path) -+ return -1; -+ -+ memset(path, 0, sizeof(struct net_device_path)); -+ ret = ctx.dev->netdev_ops->ndo_fill_forward_path(&ctx, path); -+ if (ret < 0) -+ return -1; -+ -+ if (WARN_ON_ONCE(last_dev == ctx.dev)) -+ return -1; -+ } -+ path = dev_fwd_path(stack); -+ if (!path) -+ return -1; -+ path->type = DEV_PATH_ETHERNET; -+ path->dev = ctx.dev; -+ -+ return ret; -+} -+EXPORT_SYMBOL_GPL(dev_fill_forward_path); -+ - /** - * __dev_get_by_name - find a device by its name - * @net: the applicable net namespace -- cgit v1.2.3