1 // SPDX-License-Identifier: GPL-2.0 2 /* Converted from tools/testing/selftests/bpf/verifier/xdp.c */ 3 4 #include <linux/bpf.h> 5 #include <bpf/bpf_helpers.h> 6 #include "bpf_misc.h" 7 8 SEC("xdp") 9 __description("XDP, using ifindex from netdev") 10 __success __retval(1) 11 __naked void xdp_using_ifindex_from_netdev(void) 12 { 13 asm volatile (" \ 14 r0 = 0; \ 15 r2 = *(u32*)(r1 + %[xdp_md_ingress_ifindex]); \ 16 if r2 < 1 goto l0_%=; \ 17 r0 = 1; \ 18 l0_%=: exit; \ 19 " : 20 : __imm_const(xdp_md_ingress_ifindex, offsetof(struct xdp_md, ingress_ifindex)) 21 : __clobber_all); 22 } 23 24 char _license[] SEC("license") = "GPL"; 25