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| author |   Eyal Birger <eyal.birger@gmail.com> | 2015-03-01 14:58:29 +0200 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2015-03-02 00:19:30 -0500 |
| commit | b4772ef879a8f7d8c56118c2ae5a296fcf6f81d2 (patch) | |
| tree | b4498c776c28e5c87cdeebf17577d002bcd21d47 /net/can | |
| parent | net: packet: use sockaddr_ll fields as storage for skb original length in recvmsg path (diff) | |
| download | linux-dev-b4772ef879a8f7d8c56118c2ae5a296fcf6f81d2.tar.xz linux-dev-b4772ef879a8f7d8c56118c2ae5a296fcf6f81d2.zip | |
net: use common macro for assering skb->cb[] available size in protocol families
As part of an effort to move skb->dropcount to skb->cb[] use a common
macro in protocol families using skb->cb[] for ancillary data to
validate available room in skb->cb[].
Signed-off-by: Eyal Birger <eyal.birger@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/can')
| -rw-r--r-- | net/can/bcm.c | 2 | ||||
| -rw-r--r-- | net/can/raw.c | 6 |
2 files changed, 4 insertions, 4 deletions
diff --git a/net/can/bcm.c b/net/can/bcm.c index ee9ffd956552..d559f922326d 100644 --- a/net/can/bcm.c +++ b/net/can/bcm.c @@ -328,7 +328,7 @@ static void bcm_send_to_user(struct bcm_op *op, struct bcm_msg_head *head, * containing the interface index. */ - BUILD_BUG_ON(sizeof(skb->cb) < sizeof(struct sockaddr_can)); + sock_skb_cb_check_size(sizeof(struct sockaddr_can)); addr = (struct sockaddr_can *)skb->cb; memset(addr, 0, sizeof(*addr)); addr->can_family = AF_CAN; diff --git a/net/can/raw.c b/net/can/raw.c index 00c13ef23661..94601b7ff0a3 100644 --- a/net/can/raw.c +++ b/net/can/raw.c @@ -95,8 +95,8 @@ struct raw_sock { */ static inline unsigned int *raw_flags(struct sk_buff *skb) { - BUILD_BUG_ON(sizeof(skb->cb) <= (sizeof(struct sockaddr_can) + - sizeof(unsigned int))); + sock_skb_cb_check_size(sizeof(struct sockaddr_can) + + sizeof(unsigned int)); /* return pointer after struct sockaddr_can */ return (unsigned int *)(&((struct sockaddr_can *)skb->cb)[1]); @@ -135,7 +135,7 @@ static void raw_rcv(struct sk_buff *oskb, void *data) * containing the interface index. */ - BUILD_BUG_ON(sizeof(skb->cb) < sizeof(struct sockaddr_can)); + sock_skb_cb_check_size(sizeof(struct sockaddr_can)); addr = (struct sockaddr_can *)skb->cb; memset(addr, 0, sizeof(*addr)); addr->can_family = AF_CAN; |