[net-next PATCH RFC 7/8] xdp: bpf: cpumap redirect must update skb->mem_info
From: Jesper Dangaard Brouer <hidden>
Date: 2018-12-06 23:26:06
Subsystem:
bpf [general] (safe dynamic programs and tools), the rest, xdp (express data path) · Maintainers:
Alexei Starovoitov, Daniel Borkmann, Andrii Nakryiko, Eduard Zingerman, Kumar Kartikeya Dwivedi, Linus Torvalds, David S. Miller, Jakub Kicinski, Jesper Dangaard Brouer, John Fastabend
XDP-redirect to CPUMAP is about creating the SKB outside the driver (and on another CPU) via xdp_frame info. Transfer the xdp_frame mem info to the new SKB mem_info field. Signed-off-by: Jesper Dangaard Brouer <redacted> Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org> --- kernel/bpf/cpumap.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/kernel/bpf/cpumap.c b/kernel/bpf/cpumap.c
index 24aac0d0f412..e3e05b6ccc42 100644
--- a/kernel/bpf/cpumap.c
+++ b/kernel/bpf/cpumap.c@@ -199,6 +199,8 @@ static struct sk_buff *cpu_map_build_skb(struct bpf_cpu_map_entry *rcpu, /* Essential SKB info: protocol and skb->dev */ skb->protocol = eth_type_trans(skb, xdpf->dev_rx); + skb->mem_info = xdpf->mem; + /* Optional SKB info, currently missing: * - HW checksum info (skb->ip_summed) * - HW RX hash (skb_set_hash)