From 00f5e06c032507206c4ac0c846ad82b75ae7665b Mon Sep 17 00:00:00 2001 From: Li Zefan Date: Fri, 4 Jan 2008 01:55:01 -0800 Subject: [PATCH] [CONNECTOR]: clean up {,__}cn_rx_skb() - __cn_rx_skb() does nothing but calls cn_call_callback(), it doesn't check skb and msg sizes as the comment suggests, but cn_rx_skb() checks those sizes. - In cn_rx_skb() Local variable 'len' is not used. 'len' is probably intended to be passed to skb_pull(), but here skb_pull() is not needed, instead skb_free() is called. Signed-off-by: Li Zefan Signed-off-by: David S. Miller --- drivers/connector/connector.c | 30 ++++-------------------------- 1 file changed, 4 insertions(+), 26 deletions(-) diff --git a/drivers/connector/connector.c b/drivers/connector/connector.c index edf1349c4e1f..37976dcf044b 100644 --- a/drivers/connector/connector.c +++ b/drivers/connector/connector.c @@ -181,34 +181,15 @@ static int cn_call_callback(struct cn_msg *msg, void (*destruct_data)(void *), v return err; } -/* - * Skb receive helper - checks skb and msg size and calls callback - * helper. - */ -static int __cn_rx_skb(struct sk_buff *skb, struct nlmsghdr *nlh) -{ - u32 pid, uid, seq, group; - struct cn_msg *msg; - - pid = NETLINK_CREDS(skb)->pid; - uid = NETLINK_CREDS(skb)->uid; - seq = nlh->nlmsg_seq; - group = NETLINK_CB((skb)).dst_group; - msg = NLMSG_DATA(nlh); - - return cn_call_callback(msg, (void (*)(void *))kfree_skb, skb); -} - /* * Main netlink receiving function. * - * It checks skb and netlink header sizes and calls the skb receive - * helper with a shared skb. + * It checks skb, netlink header and msg sizes, and calls callback helper. */ static void cn_rx_skb(struct sk_buff *__skb) { + struct cn_msg *msg; struct nlmsghdr *nlh; - u32 len; int err; struct sk_buff *skb; @@ -224,11 +205,8 @@ static void cn_rx_skb(struct sk_buff *__skb) return; } - len = NLMSG_ALIGN(nlh->nlmsg_len); - if (len > skb->len) - len = skb->len; - - err = __cn_rx_skb(skb, nlh); + msg = NLMSG_DATA(nlh); + err = cn_call_callback(msg, (void (*)(void *))kfree_skb, skb); if (err < 0) kfree_skb(skb); } -- 2.39.5