// SPDX-License-Identifier: GPL-2.0 #include <linux/ceph/decode.h> static intceph_decode_entity_addr_versioned(void **p, void *end,				  struct ceph_entity_addr *addr){	int ret;	u8 struct_v;	u32 struct_len, addr_len;	void *struct_end; 	ret = ceph_start_decoding(p, end, 1, "entity_addr_t", &struct_v,				  &struct_len);	if (ret)		goto bad; 	ret = -EINVAL;	struct_end = *p + struct_len; 	ceph_decode_copy_safe(p, end, &addr->type, sizeof(addr->type), bad); 	ceph_decode_copy_safe(p, end, &addr->nonce, sizeof(addr->nonce), bad); 	ceph_decode_32_safe(p, end, addr_len, bad);	if (addr_len > sizeof(addr->in_addr))		goto bad; 	memset(&addr->in_addr, 0, sizeof(addr->in_addr));	if (addr_len) {		ceph_decode_copy_safe(p, end, &addr->in_addr, addr_len, bad); 		addr->in_addr.ss_family =			le16_to_cpu((__force __le16)addr->in_addr.ss_family);	} 	/* Advance past anything the client doesn't yet understand */	*p = struct_end;	ret = 0;bad:	return ret;} static intceph_decode_entity_addr_legacy(void **p, void *end,			       struct ceph_entity_addr *addr){	int ret = -EINVAL; 	/* Skip rest of type field */	ceph_decode_skip_n(p, end, 3, bad); 	/*	 * Clients that don't support ADDR2 always send TYPE_NONE, change it	 * to TYPE_LEGACY for forward compatibility.	 */	addr->type = CEPH_ENTITY_ADDR_TYPE_LEGACY;	ceph_decode_copy_safe(p, end, &addr->nonce, sizeof(addr->nonce), bad);	memset(&addr->in_addr, 0, sizeof(addr->in_addr));	ceph_decode_copy_safe(p, end, &addr->in_addr,			      sizeof(addr->in_addr), bad);	addr->in_addr.ss_family =			be16_to_cpu((__force __be16)addr->in_addr.ss_family);	ret = 0;bad:	return ret;} intceph_decode_entity_addr(void **p, void *end, struct ceph_entity_addr *addr){	u8 marker; 	ceph_decode_8_safe(p, end, marker, bad);	if (marker == 1)		return ceph_decode_entity_addr_versioned(p, end, addr);	else if (marker == 0)		return ceph_decode_entity_addr_legacy(p, end, addr);bad:	return -EINVAL;}EXPORT_SYMBOL(ceph_decode_entity_addr);