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| author | Felix Fietkau <nbd@nbd.name> | 2022-11-14 13:42:11 +0100 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2022-11-16 05:22:07 +0100 |
| commit | 570d0a588dfbb11f9ef80ed933d0403a0e995688 (patch) | |
| tree | 145adb35df626cc01298a0f3ec10d68d7fe62121 /net/dsa/dsa.c | |
| parent | net: dcb: move getapptrust to separate function (diff) | |
| download | linux-570d0a588dfbb11f9ef80ed933d0403a0e995688.tar.xz linux-570d0a588dfbb11f9ef80ed933d0403a0e995688.zip | |
net: dsa: add support for DSA rx offloading via metadata dst
If a metadata dst is present with the type METADATA_HW_PORT_MUX on a dsa cpu
port netdev, assume that it carries the port number and that there is no DSA
tag present in the skb data.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/dsa/dsa.c')
| -rw-r--r-- | net/dsa/dsa.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/net/dsa/dsa.c b/net/dsa/dsa.c index 64b14f655b23..6caf2ec648fd 100644 --- a/net/dsa/dsa.c +++ b/net/dsa/dsa.c @@ -11,6 +11,7 @@ #include <linux/netdevice.h> #include <linux/sysfs.h> #include <linux/ptp_classify.h> +#include <net/dst_metadata.h> #include "dsa_priv.h" @@ -216,6 +217,7 @@ static bool dsa_skb_defer_rx_timestamp(struct dsa_slave_priv *p, static int dsa_switch_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt, struct net_device *unused) { + struct metadata_dst *md_dst = skb_metadata_dst(skb); struct dsa_port *cpu_dp = dev->dsa_ptr; struct sk_buff *nskb = NULL; struct dsa_slave_priv *p; @@ -229,7 +231,22 @@ static int dsa_switch_rcv(struct sk_buff *skb, struct net_device *dev, if (!skb) return 0; - nskb = cpu_dp->rcv(skb, dev); + if (md_dst && md_dst->type == METADATA_HW_PORT_MUX) { + unsigned int port = md_dst->u.port_info.port_id; + + skb_dst_drop(skb); + if (!skb_has_extensions(skb)) + skb->slow_gro = 0; + + skb->dev = dsa_master_find_slave(dev, 0, port); + if (likely(skb->dev)) { + dsa_default_offload_fwd_mark(skb); + nskb = skb; + } + } else { + nskb = cpu_dp->rcv(skb, dev); + } + if (!nskb) { kfree_skb(skb); return 0; |