From e8753043f9fbabffbf087c7f4b514c50ef89541e Mon Sep 17 00:00:00 2001 From: Samuel Ortiz Date: Fri, 19 Aug 2011 15:47:11 +0200 Subject: NFC: Reserve tx head and tail room We can have the NFC core layer allocating the tx head and tail room for the drivers and avoid 1 or more SKBs copy on write on the Tx path. Signed-off-by: Samuel Ortiz Signed-off-by: John W. Linville --- net/nfc/core.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'net/nfc/core.c') diff --git a/net/nfc/core.c b/net/nfc/core.c index b6fd4e1f2057..284e2f6a14ff 100644 --- a/net/nfc/core.c +++ b/net/nfc/core.c @@ -322,7 +322,9 @@ struct nfc_dev *nfc_get_device(unsigned idx) * @supported_protocols: NFC protocols supported by the device */ struct nfc_dev *nfc_allocate_device(struct nfc_ops *ops, - u32 supported_protocols) + u32 supported_protocols, + int tx_headroom, + int tx_tailroom) { static atomic_t dev_no = ATOMIC_INIT(0); struct nfc_dev *dev; @@ -345,6 +347,8 @@ struct nfc_dev *nfc_allocate_device(struct nfc_ops *ops, dev->ops = ops; dev->supported_protocols = supported_protocols; + dev->tx_headroom = tx_headroom; + dev->tx_tailroom = tx_tailroom; spin_lock_init(&dev->targets_lock); nfc_genl_data_init(&dev->genl_data); -- cgit v1.2.1