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-rw-r--r--net/tipc/bearer.h19
-rw-r--r--net/tipc/eth_media.c63
2 files changed, 79 insertions, 3 deletions
diff --git a/net/tipc/bearer.h b/net/tipc/bearer.h
index 4e9367f..41a61d2 100644
--- a/net/tipc/bearer.h
+++ b/net/tipc/bearer.h
@@ -43,6 +43,17 @@
#define MAX_MEDIA 2
/*
+ * Identifiers associated with TIPC message header media address info
+ *
+ * - address info field is 20 bytes long
+ * - media type identifier located at offset 3
+ * - remaining bytes vary according to media type
+ */
+
+#define TIPC_MEDIA_ADDR_SIZE 20
+#define TIPC_MEDIA_TYPE_OFFSET 3
+
+/*
* Identifiers of supported TIPC media types
*/
#define TIPC_MEDIA_TYPE_ETH 1
@@ -68,7 +79,10 @@ struct tipc_bearer;
* @send_msg: routine which handles buffer transmission
* @enable_bearer: routine which enables a bearer
* @disable_bearer: routine which disables a bearer
- * @addr2str: routine which converts bearer's address to string form
+ * @addr2str: routine which converts media address to string
+ * @str2addr: routine which converts media address from string
+ * @addr2msg: routine which converts media address to protocol message area
+ * @msg2addr: routine which converts media address from protocol message area
* @bcast_addr: media address used in broadcasting
* @priority: default link (and bearer) priority
* @tolerance: default time (in ms) before declaring link failure
@@ -84,6 +98,9 @@ struct media {
int (*enable_bearer)(struct tipc_bearer *b_ptr);
void (*disable_bearer)(struct tipc_bearer *b_ptr);
int (*addr2str)(struct tipc_media_addr *a, char *str_buf, int str_size);
+ int (*str2addr)(struct tipc_media_addr *a, char *str_buf);
+ int (*addr2msg)(struct tipc_media_addr *a, char *msg_area);
+ int (*msg2addr)(struct tipc_media_addr *a, char *msg_area);
struct tipc_media_addr bcast_addr;
u32 priority;
u32 tolerance;
diff --git a/net/tipc/eth_media.c b/net/tipc/eth_media.c
index 67f616a..ebba0fc 100644
--- a/net/tipc/eth_media.c
+++ b/net/tipc/eth_media.c
@@ -39,6 +39,8 @@
#define MAX_ETH_BEARERS MAX_BEARERS
+#define ETH_ADDR_OFFSET 4 /* message header offset of MAC address */
+
/**
* struct eth_bearer - Ethernet bearer data structure
* @bearer: ptr to associated "generic" bearer structure
@@ -57,6 +59,16 @@ static int eth_started;
static struct notifier_block notifier;
/**
+ * eth_media_addr_set - initialize Ethernet media address structure
+ */
+
+static void eth_media_addr_set(struct tipc_media_addr *a, char *mac)
+{
+ a->type = htonl(TIPC_MEDIA_TYPE_ETH);
+ memcpy(&a->dev_addr.eth_addr, mac, ETH_ALEN);
+}
+
+/**
* send_msg - send a TIPC message out over an Ethernet interface
*/
@@ -169,8 +181,7 @@ static int enable_bearer(struct tipc_bearer *tb_ptr)
tb_ptr->usr_handle = (void *)eb_ptr;
tb_ptr->mtu = dev->mtu;
tb_ptr->blocked = 0;
- tb_ptr->addr.type = htonl(TIPC_MEDIA_TYPE_ETH);
- memcpy(&tb_ptr->addr.dev_addr, dev->dev_addr, ETH_ALEN);
+ eth_media_addr_set(&tb_ptr->addr, (char *)dev->dev_addr);
return 0;
}
@@ -254,6 +265,51 @@ static int eth_addr2str(struct tipc_media_addr *a, char *str_buf, int str_size)
return 0;
}
+/**
+ * eth_str2addr - convert string to Ethernet address
+ */
+
+static int eth_str2addr(struct tipc_media_addr *a, char *str_buf)
+{
+ char mac[ETH_ALEN];
+ int r;
+
+ r = sscanf(str_buf, "%02x:%02x:%02x:%02x:%02x:%02x",
+ (u32 *)&mac[0], (u32 *)&mac[1], (u32 *)&mac[2],
+ (u32 *)&mac[3], (u32 *)&mac[4], (u32 *)&mac[5]);
+
+ if (r != ETH_ALEN)
+ return 1;
+
+ eth_media_addr_set(a, mac);
+ return 0;
+}
+
+/**
+ * eth_str2addr - convert Ethernet address format to message header format
+ */
+
+static int eth_addr2msg(struct tipc_media_addr *a, char *msg_area)
+{
+ memset(msg_area, 0, TIPC_MEDIA_ADDR_SIZE);
+ msg_area[TIPC_MEDIA_TYPE_OFFSET] = TIPC_MEDIA_TYPE_ETH;
+ memcpy(msg_area + ETH_ADDR_OFFSET, a->dev_addr.eth_addr, ETH_ALEN);
+ return 0;
+}
+
+/**
+ * eth_str2addr - convert message header address format to Ethernet format
+ */
+
+static int eth_msg2addr(struct tipc_media_addr *a, char *msg_area)
+{
+ if (msg_area[TIPC_MEDIA_TYPE_OFFSET] != TIPC_MEDIA_TYPE_ETH)
+ return 1;
+
+ eth_media_addr_set(a, msg_area + ETH_ADDR_OFFSET);
+ return 0;
+}
+
/*
* Ethernet media registration info
*/
@@ -263,6 +319,9 @@ static struct media eth_media_info = {
.enable_bearer = enable_bearer,
.disable_bearer = disable_bearer,
.addr2str = eth_addr2str,
+ .str2addr = eth_str2addr,
+ .addr2msg = eth_addr2msg,
+ .msg2addr = eth_msg2addr,
.bcast_addr = { htonl(TIPC_MEDIA_TYPE_ETH),
{ {0xff, 0xff, 0xff, 0xff, 0xff, 0xff} } },
.priority = TIPC_DEF_LINK_PRI,
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