summaryrefslogtreecommitdiff
path: root/include
diff options
context:
space:
mode:
authorSamuel Ortiz <sameo@linux.intel.com>2011-08-19 15:47:11 +0200
committerJohn W. Linville <linville@tuxdriver.com>2011-08-24 14:41:44 -0400
commite8753043f9fbabffbf087c7f4b514c50ef89541e (patch)
tree2c4b382a21500c228005a43e48134d39fdcccbe8 /include
parent4e0d8cc1006b889909a87f824943bad9a56358e8 (diff)
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 <sameo@linux.intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'include')
-rw-r--r--include/linux/nfc.h2
-rw-r--r--include/net/nfc.h7
2 files changed, 8 insertions, 1 deletions
diff --git a/include/linux/nfc.h b/include/linux/nfc.h
index 330a4c5db588..c525e0b5876b 100644
--- a/include/linux/nfc.h
+++ b/include/linux/nfc.h
@@ -123,4 +123,6 @@ struct sockaddr_nfc {
#define NFC_SOCKPROTO_RAW 0
#define NFC_SOCKPROTO_MAX 1
+#define NFC_HEADER_SIZE 1
+
#endif /*__LINUX_NFC_H */
diff --git a/include/net/nfc.h b/include/net/nfc.h
index cc0130312f70..87b51fe15b70 100644
--- a/include/net/nfc.h
+++ b/include/net/nfc.h
@@ -82,6 +82,9 @@ struct nfc_dev {
struct nfc_genl_data genl_data;
u32 supported_protocols;
+ int tx_headroom;
+ int tx_tailroom;
+
struct nfc_ops *ops;
};
#define to_nfc_dev(_dev) container_of(_dev, struct nfc_dev, dev)
@@ -89,7 +92,9 @@ struct nfc_dev {
extern struct class nfc_class;
struct nfc_dev *nfc_allocate_device(struct nfc_ops *ops,
- u32 supported_protocols);
+ u32 supported_protocols,
+ int tx_headroom,
+ int tx_tailroom);
/**
* nfc_free_device - free nfc device