Add accesses for bpf_sk_storage_get and bpf_sk_storage_delete.

Add write accesses for avg_pacing_rate of struct mptcp_subflow_context
in .btf_struct_access. They will be used in the bpf_burst selftests.

Add write accesses for all bit flags of struct mptcp_subflow_context
between map_csum_len and data_avail in .btf_struct_access. The stale
flag will be used in the bpf_stale selftests.

Signed-off-by: Geliang Tang <geliang.tang@suse.com>
---
 net/mptcp/bpf.c | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/net/mptcp/bpf.c b/net/mptcp/bpf.c
index dd1208670c54..204dc37e31cd 100644
--- a/net/mptcp/bpf.c
+++ b/net/mptcp/bpf.c
@@ -13,6 +13,7 @@
 #include <linux/bpf_verifier.h>
 #include <linux/btf.h>
 #include <linux/btf_ids.h>
+#include <net/bpf_sk_storage.h>
 #include "protocol.h"
 
 #ifdef CONFIG_BPF_JIT
@@ -30,7 +31,14 @@ static const struct bpf_func_proto *
 bpf_mptcp_sched_get_func_proto(enum bpf_func_id func_id,
 			       const struct bpf_prog *prog)
 {
-	return bpf_base_func_proto(func_id);
+	switch (func_id) {
+	case BPF_FUNC_sk_storage_get:
+		return &bpf_sk_storage_get_proto;
+	case BPF_FUNC_sk_storage_delete:
+		return &bpf_sk_storage_delete_proto;
+	default:
+		return bpf_base_func_proto(func_id);
+	}
 }
 
 static int bpf_mptcp_sched_btf_struct_access(struct bpf_verifier_log *log,
@@ -50,6 +58,12 @@ static int bpf_mptcp_sched_btf_struct_access(struct bpf_verifier_log *log,
 	case offsetof(struct mptcp_subflow_context, scheduled):
 		end = offsetofend(struct mptcp_subflow_context, scheduled);
 		break;
+	case offsetofend(struct mptcp_subflow_context, map_csum_len):
+		end = offsetof(struct mptcp_subflow_context, data_avail);
+		break;
+	case offsetof(struct mptcp_subflow_context, avg_pacing_rate):
+		end = offsetofend(struct mptcp_subflow_context, avg_pacing_rate);
+		break;
 	default:
 		bpf_log(log, "no write support to mptcp_subflow_context at off %d\n", off);
 		return -EACCES;
-- 
2.35.3