bpf: Rename nfct_bsa to nfct_btf_struct_access

The former name was a little hard to guess.
Signed-off-by: Daniel Xu <dxu@dxuuu.xyz>
Link: https://lore.kernel.org/r/73adc72385c8b162391fbfb404f0b6d4c5cc55d7.1663683114.git.dxu@dxuuu.xyzSigned-off-by: Martin KaFai Lau <martin.lau@kernel.org>

include/net/netfilter/nf_conntrack_bpf.h

@@ -13,7 +13,7 @@ extern int register_nf_conntrack_bpf(void);
 extern void cleanup_nf_conntrack_bpf(void);
 
 extern struct mutex nf_conn_btf_access_lock;
-extern int (*nfct_bsa)(struct bpf_verifier_log *log, const struct btf *btf,
+extern int (*nfct_btf_struct_access)(struct bpf_verifier_log *log, const struct btf *btf,
 				     const struct btf_type *t, int off, int size,
 				     enum bpf_access_type atype, u32 *next_btf_id,
 				     enum bpf_type_flag *flag);

net/core/filter.c

@@ -8608,11 +8608,11 @@ static bool tc_cls_act_is_valid_access(int off, int size,
 DEFINE_MUTEX(nf_conn_btf_access_lock);
 EXPORT_SYMBOL_GPL(nf_conn_btf_access_lock);
 
-int (*nfct_bsa)(struct bpf_verifier_log *log, const struct btf *btf,
+int (*nfct_btf_struct_access)(struct bpf_verifier_log *log, const struct btf *btf,
 			      const struct btf_type *t, int off, int size,
 			      enum bpf_access_type atype, u32 *next_btf_id,
 			      enum bpf_type_flag *flag);
-EXPORT_SYMBOL_GPL(nfct_bsa);
+EXPORT_SYMBOL_GPL(nfct_btf_struct_access);
 
 static int tc_cls_act_btf_struct_access(struct bpf_verifier_log *log,
 					const struct btf *btf,
@@ -8628,8 +8628,8 @@ static int tc_cls_act_btf_struct_access(struct bpf_verifier_log *log,
 					 flag);
 
 	mutex_lock(&nf_conn_btf_access_lock);
-	if (nfct_bsa)
-		ret = nfct_bsa(log, btf, t, off, size, atype, next_btf_id, flag);
+	if (nfct_btf_struct_access)
+		ret = nfct_btf_struct_access(log, btf, t, off, size, atype, next_btf_id, flag);
 	mutex_unlock(&nf_conn_btf_access_lock);
 
 	return ret;
@@ -8708,8 +8708,8 @@ static int xdp_btf_struct_access(struct bpf_verifier_log *log,
 					 flag);
 
 	mutex_lock(&nf_conn_btf_access_lock);
-	if (nfct_bsa)
-		ret = nfct_bsa(log, btf, t, off, size, atype, next_btf_id, flag);
+	if (nfct_btf_struct_access)
+		ret = nfct_btf_struct_access(log, btf, t, off, size, atype, next_btf_id, flag);
 	mutex_unlock(&nf_conn_btf_access_lock);
 
 	return ret;

net/netfilter/nf_conntrack_bpf.c

@@ -502,7 +502,7 @@ int register_nf_conntrack_bpf(void)
 	ret = ret ?: register_btf_kfunc_id_set(BPF_PROG_TYPE_SCHED_CLS, &nf_conntrack_kfunc_set);
 	if (!ret) {
 		mutex_lock(&nf_conn_btf_access_lock);
-		nfct_bsa = _nf_conntrack_btf_struct_access;
+		nfct_btf_struct_access = _nf_conntrack_btf_struct_access;
 		mutex_unlock(&nf_conn_btf_access_lock);
 	}
 
@@ -512,6 +512,6 @@ int register_nf_conntrack_bpf(void)
 void cleanup_nf_conntrack_bpf(void)
 {
 	mutex_lock(&nf_conn_btf_access_lock);
-	nfct_bsa = NULL;
+	nfct_btf_struct_access = NULL;
 	mutex_unlock(&nf_conn_btf_access_lock);
 }