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Date: Mon, 17 May 2010 18:59:41 +1000
From: Andrew Hendry <andrew.hendry@...il.com>
To: netdev@...r.kernel.org
Subject: [PATCH 1/4] X25: Move qbit flag to bitfield
Moves the X25 q bit flag from char into a bitfield to allow BKL cleanup.
Signed-off-by: Andrew Hendry <andrew.hendry@...il.com>
---
include/net/x25.h | 6 +++++-
net/x25/af_x25.c | 17 ++++++++++-------
2 files changed, 15 insertions(+), 8 deletions(-)
diff --git a/include/net/x25.h b/include/net/x25.h
index 468551e..7b5795e 100644
--- a/include/net/x25.h
+++ b/include/net/x25.h
@@ -113,6 +113,9 @@ enum {
#define X25_MAX_AE_LEN 40 /* Max num of semi-octets in AE - OSI Nw */
#define X25_MAX_DTE_FACIL_LEN 21 /* Max length of DTE facility params */
+/* Bitset in x25_sock->flags for misc flags */
+#define X25_Q_BIT_FLAG 0
+
/**
* struct x25_route - x25 routing entry
* @node - entry in x25_list_lock
@@ -146,10 +149,11 @@ struct x25_sock {
struct x25_address source_addr, dest_addr;
struct x25_neigh *neighbour;
unsigned int lci, cudmatchlength;
- unsigned char state, condition, qbitincl, intflag, accptapprv;
+ unsigned char state, condition, intflag, accptapprv;
unsigned short vs, vr, va, vl;
unsigned long t2, t21, t22, t23;
unsigned short fraglen;
+ unsigned long flags;
struct sk_buff_head ack_queue;
struct sk_buff_head fragment_queue;
struct sk_buff_head interrupt_in_queue;
diff --git a/net/x25/af_x25.c b/net/x25/af_x25.c
index 296e65e..720534c 100644
--- a/net/x25/af_x25.c
+++ b/net/x25/af_x25.c
@@ -465,7 +465,10 @@ static int x25_setsockopt(struct socket *sock, int level, int optname,
if (get_user(opt, (int __user *)optval))
goto out;
- x25_sk(sk)->qbitincl = !!opt;
+ if (opt)
+ set_bit(X25_Q_BIT_FLAG, &x25_sk(sk)->flags);
+ else
+ clear_bit(X25_Q_BIT_FLAG, &x25_sk(sk)->flags);
rc = 0;
out:
unlock_kernel();
@@ -496,7 +499,7 @@ static int x25_getsockopt(struct socket *sock, int level, int optname,
if (put_user(len, optlen))
goto out;
- val = x25_sk(sk)->qbitincl;
+ val = test_bit(X25_Q_BIT_FLAG, &x25_sk(sk)->flags);
rc = copy_to_user(optval, &val, len) ? -EFAULT : 0;
out:
unlock_kernel();
@@ -632,8 +635,8 @@ static struct sock *x25_make_new(struct sock *osk)
x25->t22 = ox25->t22;
x25->t23 = ox25->t23;
x25->t2 = ox25->t2;
+ x25->flags = ox25->flags;
x25->facilities = ox25->facilities;
- x25->qbitincl = ox25->qbitincl;
x25->dte_facilities = ox25->dte_facilities;
x25->cudmatchlength = ox25->cudmatchlength;
x25->accptapprv = ox25->accptapprv;
@@ -1186,7 +1189,7 @@ static int x25_sendmsg(struct kiocb *iocb, struct socket *sock,
* If the Q BIT Include socket option is in force, the first
* byte of the user data is the logical value of the Q Bit.
*/
- if (x25->qbitincl) {
+ if (test_bit(X25_Q_BIT_FLAG, &x25->flags)) {
qbit = skb->data[0];
skb_pull(skb, 1);
}
@@ -1242,7 +1245,7 @@ static int x25_sendmsg(struct kiocb *iocb, struct socket *sock,
len = rc;
if (rc < 0)
kfree_skb(skb);
- else if (x25->qbitincl)
+ else if (test_bit(X25_Q_BIT_FLAG, &x25->flags))
len++;
}
@@ -1307,7 +1310,7 @@ static int x25_recvmsg(struct kiocb *iocb, struct socket *sock,
/*
* No Q bit information on Interrupt data.
*/
- if (x25->qbitincl) {
+ if (test_bit(X25_Q_BIT_FLAG, &x25->flags)) {
asmptr = skb_push(skb, 1);
*asmptr = 0x00;
}
@@ -1325,7 +1328,7 @@ static int x25_recvmsg(struct kiocb *iocb, struct socket *sock,
skb_pull(skb, x25->neighbour->extended ?
X25_EXT_MIN_LEN : X25_STD_MIN_LEN);
- if (x25->qbitincl) {
+ if (test_bit(X25_Q_BIT_FLAG, &x25->flags)) {
asmptr = skb_push(skb, 1);
*asmptr = qbit;
}
--
1.5.6.5
--
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