Commit c61b666e authored by Allan Stephens's avatar Allan Stephens Committed by Paul Gortmaker
Browse files

tipc: Improve handling of media address printing errors

Enhances conversion of a media address to printable form so that an
unconvertable address will be displayed as a string of hex digits,
rather than not being displayed at all. (Also removes a pointless check
for the existence of the media-specific address conversion routine,
since the routine is not optional.)
Signed-off-by: default avatarAllan Stephens <>
Signed-off-by: default avatarPaul Gortmaker <>
parent 6c349210
......@@ -136,20 +136,18 @@ int tipc_register_media(struct media *m_ptr)
void tipc_media_addr_printf(struct print_buf *pb, struct tipc_media_addr *a)
char addr_str[MAX_ADDR_STR];
struct media *m_ptr;
u32 media_type;
u32 i;
media_type = ntohl(a->type);
m_ptr = media_find_id(media_type);
if (m_ptr && (m_ptr->addr2str != NULL)) {
char addr_str[MAX_ADDR_STR];
tipc_printf(pb, "%s(%s)", m_ptr->name,
m_ptr->addr2str(a, addr_str, sizeof(addr_str)));
} else {
if (m_ptr && !m_ptr->addr2str(a, addr_str, sizeof(addr_str)))
tipc_printf(pb, "%s(%s)", m_ptr->name, addr_str);
else {
unchar *addr = (unchar *)&a->dev_addr;
u32 i;
tipc_printf(pb, "UNKNOWN(%u)", media_type);
for (i = 0; i < (sizeof(*a) - sizeof(a->type)); i++)
......@@ -83,8 +83,7 @@ struct media {
struct tipc_media_addr *dest);
int (*enable_bearer)(struct tipc_bearer *b_ptr);
void (*disable_bearer)(struct tipc_bearer *b_ptr);
char *(*addr2str)(struct tipc_media_addr *a,
char *str_buf, int str_size);
int (*addr2str)(struct tipc_media_addr *a, char *str_buf, int str_size);
struct tipc_media_addr bcast_addr;
u32 priority;
u32 tolerance;
......@@ -243,15 +243,15 @@ static int recv_notification(struct notifier_block *nb, unsigned long evt,
* eth_addr2str - convert Ethernet address to string
static char *eth_addr2str(struct tipc_media_addr *a, char *str_buf, int str_size)
static int eth_addr2str(struct tipc_media_addr *a, char *str_buf, int str_size)
unchar *addr = (unchar *)&a->dev_addr;
if (str_size < 18)
*str_buf = '\0';
sprintf(str_buf, "%pM", addr);
return str_buf;
if (str_size < 18) /* 18 = strlen("aa:bb:cc:dd:ee:ff\0") */
return 1;
sprintf(str_buf, "%pM", addr);
return 0;
Supports Markdown
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment