Return-Path: From: Alexander Aring To: linux-wpan@vger.kernel.org Cc: kernel@pengutronix.de, luiz.dentz@gmail.com, kaspar@schleiser.de, jukka.rissanen@linux.intel.com, linux-bluetooth@vger.kernel.org, Patrik.Flykt@linux.intel.com, Alexander Aring Subject: [RFC bluetooth-next 04/20] ieee802154: 6lowpan: move skb cb BUILD_BUG_ON check Date: Mon, 11 Jul 2016 21:50:28 +0200 Message-Id: <20160711195044.25343-5-aar@pengutronix.de> In-Reply-To: <20160711195044.25343-1-aar@pengutronix.de> References: <20160711195044.25343-1-aar@pengutronix.de> Sender: linux-wpan-owner@vger.kernel.org List-ID: This patch moves the control block information BUILD_BUG_ON to the init of module. All compile timed BUILD_BUG_ON macros should be placed there. Signed-off-by: Alexander Aring --- include/net/6lowpan.h | 1 - net/ieee802154/6lowpan/core.c | 3 +++ 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/include/net/6lowpan.h b/include/net/6lowpan.h index 5ab4c99..6d56be7 100644 --- a/include/net/6lowpan.h +++ b/include/net/6lowpan.h @@ -178,7 +178,6 @@ struct lowpan_802154_cb { static inline struct lowpan_802154_cb *lowpan_802154_cb(const struct sk_buff *skb) { - BUILD_BUG_ON(sizeof(struct lowpan_802154_cb) > sizeof(skb->cb)); return (struct lowpan_802154_cb *)skb->cb; } diff --git a/net/ieee802154/6lowpan/core.c b/net/ieee802154/6lowpan/core.c index d7efbf0..6afb8cd 100644 --- a/net/ieee802154/6lowpan/core.c +++ b/net/ieee802154/6lowpan/core.c @@ -233,6 +233,9 @@ static int __init lowpan_init_module(void) { int err = 0; + BUILD_BUG_ON(sizeof(struct lowpan_802154_cb) > + FIELD_SIZEOF(struct sk_buff, cb)); + err = lowpan_net_frag_init(); if (err < 0) goto out; -- 2.9.0