diff options
Diffstat (limited to 'net/can/bcm.c')
| -rw-r--r-- | net/can/bcm.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/net/can/bcm.c b/net/can/bcm.c index 0e5c37be4a2b..909b9e684e04 100644 --- a/net/can/bcm.c +++ b/net/can/bcm.c @@ -86,6 +86,8 @@ MODULE_LICENSE("Dual BSD/GPL"); MODULE_AUTHOR("Oliver Hartkopp <oliver.hartkopp@volkswagen.de>"); MODULE_ALIAS("can-proto-2"); +#define BCM_MIN_NAMELEN CAN_REQUIRED_SIZE(struct sockaddr_can, can_ifindex) + /* * easy access to the first 64 bit of can(fd)_frame payload. cp->data is * 64 bit aligned so the offset has to be multiples of 8 which is ensured @@ -1292,7 +1294,7 @@ static int bcm_sendmsg(struct socket *sock, struct msghdr *msg, size_t size) /* no bound device as default => check msg_name */ DECLARE_SOCKADDR(struct sockaddr_can *, addr, msg->msg_name); - if (msg->msg_namelen < CAN_REQUIRED_SIZE(*addr, can_ifindex)) + if (msg->msg_namelen < BCM_MIN_NAMELEN) return -EINVAL; if (addr->can_family != AF_CAN) @@ -1534,7 +1536,7 @@ static int bcm_connect(struct socket *sock, struct sockaddr *uaddr, int len, struct net *net = sock_net(sk); int ret = 0; - if (len < CAN_REQUIRED_SIZE(*addr, can_ifindex)) + if (len < BCM_MIN_NAMELEN) return -EINVAL; lock_sock(sk); @@ -1616,8 +1618,8 @@ static int bcm_recvmsg(struct socket *sock, struct msghdr *msg, size_t size, sock_recv_ts_and_drops(msg, sk, skb); if (msg->msg_name) { - __sockaddr_check_size(sizeof(struct sockaddr_can)); - msg->msg_namelen = sizeof(struct sockaddr_can); + __sockaddr_check_size(BCM_MIN_NAMELEN); + msg->msg_namelen = BCM_MIN_NAMELEN; memcpy(msg->msg_name, skb->cb, msg->msg_namelen); } |