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- --- a/net/core/xdp.c
- +++ b/net/core/xdp.c
- @@ -12,6 +12,7 @@
- #include <linux/idr.h>
- #include <linux/rhashtable.h>
- #include <linux/bug.h>
- +#include <linux/btf.h>
- #include <net/page_pool.h>
-
- #include <net/xdp.h>
- @@ -387,6 +388,13 @@
- void xdp_return_buff(struct xdp_buff *xdp)
- {
- __xdp_return(xdp->data, &xdp->rxq->mem, true, xdp);
- + /* xdp_buff is referenced via BTF_ID_LIST_SINGLE(bpf_xdp_output_btf_ids)
- + * in net/core/filter.c but is not otherwise emitted into vmlinux BTF,
- + * so resolve_btfids aborts with "unresolved symbol xdp_buff". Force BTF
- + * emission here where the struct is complete (this file includes both
- + * <net/xdp.h> for the type and <linux/btf.h> for BTF_TYPE_EMIT). */
- + BTF_TYPE_EMIT(struct xdp_buff);
- +
- }
-
- /* Only called for MEM_TYPE_PAGE_POOL see xdp.h */
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