From: Jason Wang <redacted>
In skb generic path, we need a way to run XDP program on skb but
to have customized handling of XDP actions. netif_receive_generic_xdp
will be more helpful in such cases than do_xdp_generic.
This patch prepares netif_receive_generic_xdp() to be used as general
purpose function by renaming it and exporting as a general purpose
function. It will just run XDP program on skb but will not handle XDP
actions.
Signed-off-by: Jason Wang <redacted>
Signed-off-by: Prashant Bhole <redacted>
---
include/linux/netdevice.h | 2 ++
net/core/dev.c | 8 ++++----
2 files changed, 6 insertions(+), 4 deletions(-)
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index e9cc326086f4..9c219796691c 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -3665,6 +3665,8 @@ static inline void dev_consume_skb_any(struct sk_buff *skb)
void generic_xdp_tx(struct sk_buff *skb, struct bpf_prog *xdp_prog);
int do_xdp_generic(struct bpf_prog *xdp_prog, struct sk_buff *skb);
+u32 do_xdp_generic_core(struct sk_buff *skb, struct xdp_buff *xdp,
+ struct bpf_prog *xdp_prog);
int netif_rx(struct sk_buff *skb);
int netif_rx_ni(struct sk_buff *skb);
int netif_receive_skb(struct sk_buff *skb);
diff --git a/net/core/dev.c b/net/core/dev.c
index bf76dbee9d2a..3ba207b4ed79 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -4461,9 +4461,8 @@ static struct netdev_rx_queue *netif_get_rxqueue(struct sk_buff *skb)
return rxqueue;
}
-static u32 netif_receive_generic_xdp(struct sk_buff *skb,
- struct xdp_buff *xdp,
- struct bpf_prog *xdp_prog)
+u32 do_xdp_generic_core(struct sk_buff *skb, struct xdp_buff *xdp,
+ struct bpf_prog *xdp_prog)
{
struct netdev_rx_queue *rxqueue;
void *orig_data, *orig_data_end;@@ -4574,6 +4573,7 @@ static u32 netif_receive_generic_xdp(struct sk_buff *skb,
return act;
}
+EXPORT_SYMBOL_GPL(do_xdp_generic_core);
/* When doing generic XDP we have to bypass the qdisc layer and the
* network taps in order to match in-driver-XDP behavior.
@@ -4610,7 +4610,7 @@ int do_xdp_generic(struct bpf_prog *xdp_prog, struct sk_buff *skb)
u32 act;
int err;
- act = netif_receive_generic_xdp(skb, &xdp, xdp_prog);
+ act = do_xdp_generic_core(skb, &xdp, xdp_prog);
if (act != XDP_PASS) {
switch (act) {
case XDP_REDIRECT:--
2.21.1 (Apple Git-122.3)