bpf: Reset data_meta before running programs attached to devmap entry

This is a new context that does not handle metadata at the moment, so
mark data_meta invalid.

Fixes: fbee97f ("bpf: Add support to attach bpf program to a devmap entry")
Signed-off-by: David Ahern <[email protected]>
Signed-off-by: Alexei Starovoitov <[email protected]>
Link: https://lore.kernel.org/bpf/[email protected]

Author: dsahern

kernel/bpf/devmap.c

@@ -479,6 +479,7 @@ static struct xdp_buff *dev_map_run_prog(struct net_device *dev,
 	struct xdp_txq_info txq = { .dev = dev };
 	u32 act;
 
+	xdp_set_data_meta_invalid(xdp);
 	xdp->txq = &txq;
 
 	act = bpf_prog_run_xdp(xdp_prog, xdp);