diff options
Diffstat (limited to 'net/tipc/bearer.h')
| -rw-r--r-- | net/tipc/bearer.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/net/tipc/bearer.h b/net/tipc/bearer.h index 5cad243ee8fc..b7302b012624 100644 --- a/net/tipc/bearer.h +++ b/net/tipc/bearer.h @@ -38,6 +38,7 @@ #define _TIPC_BEARER_H #include "netlink.h" +#include "msg.h" #include <net/genetlink.h> #define MAX_BEARERS 2 @@ -61,6 +62,9 @@ #define TIPC_MEDIA_TYPE_IB 2 #define TIPC_MEDIA_TYPE_UDP 3 +/* minimum bearer MTU */ +#define TIPC_MIN_BEARER_MTU (MAX_H_SIZE + INT_H_SIZE) + /** * struct tipc_node_map - set of node identifiers * @count: # of nodes in set @@ -218,4 +222,13 @@ void tipc_bearer_stop(struct net *net); void tipc_bearer_send(struct net *net, u32 bearer_id, struct sk_buff *buf, struct tipc_media_addr *dest); +/* check if device MTU is too low for tipc headers */ +static inline bool tipc_mtu_bad(struct net_device *dev, unsigned int reserve) +{ + if (dev->mtu >= TIPC_MIN_BEARER_MTU + reserve) + return false; + netdev_warn(dev, "MTU too low for tipc bearer\n"); + return true; +} + #endif /* _TIPC_BEARER_H */ |