1 // SPDX-License-Identifier: GPL-2.0 2 3 #include <vmlinux.h> 4 #include "xdp_metadata.h" 5 #include <bpf/bpf_helpers.h> 6 #include <bpf/bpf_endian.h> 7 8 extern int bpf_xdp_metadata_rx_hash(const struct xdp_md *ctx, __u32 *hash, 9 enum xdp_rss_hash_type *rss_type) __ksym; 10 11 int called; 12 13 SEC("freplace/rx") 14 int freplace_rx(struct xdp_md *ctx) 15 { 16 enum xdp_rss_hash_type type = 0; 17 u32 hash = 0; 18 /* Call _any_ metadata function to make sure we don't crash. */ 19 bpf_xdp_metadata_rx_hash(ctx, &hash, &type); 20 called++; 21 return XDP_PASS; 22 } 23 24 char _license[] SEC("license") = "GPL"; 25