From: Samuel Ortiz <sameo@linux.intel.com>
To: "John W. Linville" <linville@tuxdriver.com>
Cc: Lauro Ramos Venancio <lauro.venancio@openbossa.org>,
Aloisio Almeida Jr <aloisio.almeida@openbossa.org>,
linux-wireless@vger.kernel.org,
Samuel Ortiz <sameo@linux.intel.com>
Subject: [PATCH 2/8] NFC: Add tx skb allocation routine
Date: Wed, 14 Dec 2011 16:43:06 +0100 [thread overview]
Message-ID: <1323877392-20567-3-git-send-email-sameo@linux.intel.com> (raw)
In-Reply-To: <1323877392-20567-1-git-send-email-sameo@linux.intel.com>
This is a factorization of the current rawsock tx skb allocation routine,
as it will be used by the LLCP code.
We also rename nfc_alloc_skb to nfc_alloc_recv_skb for consistency sake.
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
---
drivers/nfc/pn533.c | 2 +-
include/net/nfc/nfc.h | 5 ++++-
net/nfc/core.c | 30 +++++++++++++++++++++++++++---
net/nfc/rawsock.c | 7 ++-----
4 files changed, 34 insertions(+), 10 deletions(-)
diff --git a/drivers/nfc/pn533.c b/drivers/nfc/pn533.c
index dbf214e..ea1caae 100644
--- a/drivers/nfc/pn533.c
+++ b/drivers/nfc/pn533.c
@@ -1368,7 +1368,7 @@ static int pn533_data_exchange(struct nfc_dev *nfc_dev, u32 target_idx,
PN533_CMD_DATAEXCH_DATA_MAXLEN +
PN533_FRAME_TAIL_SIZE;
- skb_resp = nfc_alloc_skb(skb_resp_len, GFP_KERNEL);
+ skb_resp = nfc_alloc_recv_skb(skb_resp_len, GFP_KERNEL);
if (!skb_resp) {
rc = -ENOMEM;
goto error;
diff --git a/include/net/nfc/nfc.h b/include/net/nfc/nfc.h
index 6a7f602..3a3304c 100644
--- a/include/net/nfc/nfc.h
+++ b/include/net/nfc/nfc.h
@@ -157,7 +157,10 @@ static inline const char *nfc_device_name(struct nfc_dev *dev)
return dev_name(&dev->dev);
}
-struct sk_buff *nfc_alloc_skb(unsigned int size, gfp_t gfp);
+struct sk_buff *nfc_alloc_send_skb(struct nfc_dev *dev, struct sock *sk,
+ unsigned int flags, unsigned int size,
+ unsigned int *err);
+struct sk_buff *nfc_alloc_recv_skb(unsigned int size, gfp_t gfp);
int nfc_targets_found(struct nfc_dev *dev, struct nfc_target *targets,
int ntargets);
diff --git a/net/nfc/core.c b/net/nfc/core.c
index 2a838b0..f53f88a 100644
--- a/net/nfc/core.c
+++ b/net/nfc/core.c
@@ -27,6 +27,7 @@
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/slab.h>
+#include <linux/nfc.h>
#include "nfc.h"
@@ -275,12 +276,35 @@ error:
}
/**
- * nfc_alloc_skb - allocate a skb for data exchange responses
+ * nfc_alloc_send_skb - allocate a skb for data exchange responses
*
* @size: size to allocate
* @gfp: gfp flags
*/
-struct sk_buff *nfc_alloc_skb(unsigned int size, gfp_t gfp)
+struct sk_buff *nfc_alloc_send_skb(struct nfc_dev *dev, struct sock *sk,
+ unsigned int flags, unsigned int size,
+ unsigned int *err)
+{
+ struct sk_buff *skb;
+ unsigned int total_size;
+
+ total_size = size +
+ dev->tx_headroom + dev->tx_tailroom + NFC_HEADER_SIZE;
+
+ skb = sock_alloc_send_skb(sk, total_size, flags & MSG_DONTWAIT, err);
+ if (skb)
+ skb_reserve(skb, dev->tx_headroom + NFC_HEADER_SIZE);
+
+ return skb;
+}
+
+/**
+ * nfc_alloc_recv_skb - allocate a skb for data exchange responses
+ *
+ * @size: size to allocate
+ * @gfp: gfp flags
+ */
+struct sk_buff *nfc_alloc_recv_skb(unsigned int size, gfp_t gfp)
{
struct sk_buff *skb;
unsigned int total_size;
@@ -293,7 +317,7 @@ struct sk_buff *nfc_alloc_skb(unsigned int size, gfp_t gfp)
return skb;
}
-EXPORT_SYMBOL(nfc_alloc_skb);
+EXPORT_SYMBOL(nfc_alloc_recv_skb);
/**
* nfc_targets_found - inform that targets were found
diff --git a/net/nfc/rawsock.c b/net/nfc/rawsock.c
index 5e9b991..11ac0a1 100644
--- a/net/nfc/rawsock.c
+++ b/net/nfc/rawsock.c
@@ -208,13 +208,10 @@ static int rawsock_sendmsg(struct kiocb *iocb, struct socket *sock,
if (sock->state != SS_CONNECTED)
return -ENOTCONN;
- skb = sock_alloc_send_skb(sk, len + dev->tx_headroom + dev->tx_tailroom + NFC_HEADER_SIZE,
- msg->msg_flags & MSG_DONTWAIT, &rc);
- if (!skb)
+ skb = nfc_alloc_send_skb(dev, sk, msg->msg_flags, len, &rc);
+ if (skb == NULL)
return rc;
- skb_reserve(skb, dev->tx_headroom + NFC_HEADER_SIZE);
-
rc = memcpy_fromiovec(skb_put(skb, len), msg->msg_iov, len);
if (rc < 0) {
kfree_skb(skb);
--
1.7.7.3
next prev parent reply other threads:[~2011-12-14 15:38 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-12-14 15:43 [PATCH 0/8] NFC update Samuel Ortiz
2011-12-14 15:43 ` [PATCH 1/8] NFC: Add function name to the NFC pr_fmt() routine Samuel Ortiz
2011-12-14 15:43 ` Samuel Ortiz [this message]
2011-12-14 15:43 ` [PATCH 3/8] NFC: Do not take the genl mutex from the netlink release notifier Samuel Ortiz
2011-12-15 8:40 ` Elias, Ilan
2011-12-14 15:43 ` [PATCH 4/8] NFC: Atomic socket allocation Samuel Ortiz
2011-12-14 15:43 ` [PATCH 5/8] NFC: Add a DEP link control netlink command Samuel Ortiz
2011-12-14 15:43 ` [PATCH 6/8] NFC: Set and get DEP general bytes Samuel Ortiz
2011-12-14 15:43 ` [PATCH 7/8] NFC: DEP link hook implementation for pn533 Samuel Ortiz
2011-12-14 15:43 ` [PATCH 8/8] NFC: Initial LLCP support Samuel Ortiz
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