Merge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next

Martin KaFai Lau says:

====================
pull-request: bpf-next 2025-04-17

We've added 12 non-merge commits during the last 9 day(s) which contain
a total of 18 files changed, 1748 insertions(+), 19 deletions(-).

The main changes are:

1) bpf qdisc support, from Amery Hung.
   A qdisc can be implemented in bpf struct_ops programs and
   can be used the same as other existing qdiscs in the
   "tc qdisc" command.

2) Add xsk tail adjustment tests, from Tushar Vyavahare.

* tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next:
  selftests/bpf: Test attaching bpf qdisc to mq and non root
  selftests/bpf: Add a bpf fq qdisc to selftest
  selftests/bpf: Add a basic fifo qdisc test
  libbpf: Support creating and destroying qdisc
  bpf: net_sched: Disable attaching bpf qdisc to non root
  bpf: net_sched: Support updating bstats
  bpf: net_sched: Add a qdisc watchdog timer
  bpf: net_sched: Add basic bpf qdisc kfuncs
  bpf: net_sched: Support implementation of Qdisc_ops in bpf
  bpf: Prepare to reuse get_ctx_arg_idx
  selftests/xsk: Add tail adjustment tests and support check
  selftests/xsk: Add packet stream replacement function
====================

Link: https://patch.msgid.link/20250417184338.3152168-1-martin.lau@linux.dev
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

1 files changed, 3 insertions, 3 deletions

diff --git a/kernel/bpf/btf.c b/kernel/bpf/btf.c
index 24a26b4bb0b8..324c47ab377a 100644
--- a/kernel/bpf/btf.c
+++ b/kernel/bpf/btf.c
@@ -6391,8 +6391,8 @@ static bool is_int_ptr(struct btf *btf, const struct btf_type *t)
 	return btf_type_is_int(t);
 }
 
-static u32 get_ctx_arg_idx(struct btf *btf, const struct btf_type *func_proto,
-			   int off)
+u32 btf_ctx_arg_idx(struct btf *btf, const struct btf_type *func_proto,
+		    int off)
 {
 	const struct btf_param *args;
 	const struct btf_type *t;
@@ -6672,7 +6672,7 @@ bool btf_ctx_access(int off, int size, enum bpf_access_type type,
 			tname, off);
 		return false;
 	}
-	arg = get_ctx_arg_idx(btf, t, off);
+	arg = btf_ctx_arg_idx(btf, t, off);
 	args = (const struct btf_param *)(t + 1);
 	/* if (t == NULL) Fall back to default BPF prog with
 	 * MAX_BPF_FUNC_REG_ARGS u64 arguments.