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authorJon Maloy <jmaloy@redhat.com>2021-03-16 22:06:10 -0400
committerDavid S. Miller <davem@davemloft.net>2021-03-17 11:51:04 -0700
commit7823f04f34b89ae65de612adf40b314a61969bf0 (patch)
treecbb038de95cd58de16175aaf616de9cbd46fe4e6 /net/tipc/addr.h
parentb26b5aa9cebe336028421b0641ed762fef81d178 (diff)
tipc: introduce new unified address type for internal use
We introduce a simplified version of struct sockaddr_tipc, using anonymous unions and structures. Apart from being nicer to work with, this struct will come in handy when we in a later commit add another address type. Signed-off-by: Jon Maloy <jmaloy@redhat.com> Acked-by: Ying Xue <ying.xue@windriver.com> Acked-by: Hoang Le <hoang.h.le@dektech.com.au> Acked-by: Tung Nguyen <tung.q.nguyen@dektech.com.au> Acked-by: Xin Long <lucien.xin@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/tipc/addr.h')
-rw-r--r--net/tipc/addr.h46
1 files changed, 45 insertions, 1 deletions
diff --git a/net/tipc/addr.h b/net/tipc/addr.h
index 1a11831bef62..0772cfadaa0d 100644
--- a/net/tipc/addr.h
+++ b/net/tipc/addr.h
@@ -3,7 +3,7 @@
*
* Copyright (c) 2000-2006, 2018, Ericsson AB
* Copyright (c) 2004-2005, Wind River Systems
- * Copyright (c) 2020, Red Hat Inc
+ * Copyright (c) 2020-2021, Red Hat Inc
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@@ -44,6 +44,50 @@
#include <net/netns/generic.h>
#include "core.h"
+/* Struct tipc_uaddr: internal version of struct sockaddr_tipc.
+ * Must be kept aligned both regarding field positions and size.
+ */
+struct tipc_uaddr {
+ unsigned short family;
+ unsigned char addrtype;
+ signed char scope;
+ union {
+ struct {
+ struct tipc_service_addr sa;
+ u32 lookup_node;
+ };
+ struct tipc_service_range sr;
+ struct tipc_socket_addr sk;
+ };
+};
+
+static inline void tipc_uaddr(struct tipc_uaddr *ua, u32 atype, u32 scope,
+ u32 type, u32 lower, u32 upper)
+{
+ ua->family = AF_TIPC;
+ ua->addrtype = atype;
+ ua->scope = scope;
+ ua->sr.type = type;
+ ua->sr.lower = lower;
+ ua->sr.upper = upper;
+}
+
+static inline bool tipc_uaddr_valid(struct tipc_uaddr *ua, int len)
+{
+ u32 atype;
+
+ if (len < sizeof(struct sockaddr_tipc))
+ return false;
+ atype = ua->addrtype;
+ if (ua->family != AF_TIPC)
+ return false;
+ if (atype == TIPC_SERVICE_ADDR || atype == TIPC_SOCKET_ADDR)
+ return true;
+ if (atype == TIPC_SERVICE_RANGE)
+ return ua->sr.upper >= ua->sr.lower;
+ return false;
+}
+
static inline u32 tipc_own_addr(struct net *net)
{
return tipc_net(net)->node_addr;