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Subject[2.6 patch] net/decnet/: misc possible cleanups
The patch below contains the following possible cleanups:
- make needlessly global code static
- dn_fib.c: remove the write-only global variable dn_fib_info_cnt
- dn_fib.c: remove the unused global function dn_fib_rt_message
- dn_neigh.c: remove the unused global function dn_neigh_pointopoint_notify
- dn_timer.c: remove the fast timer code that isn't used

Please review and comment on this patch.


diffstat output:
include/net/dn.h | 2 -
include/net/dn_fib.h | 1
net/decnet/af_decnet.c | 6 +----
net/decnet/dn_fib.c | 15 -------------
net/decnet/dn_neigh.c | 8 ------
net/decnet/dn_route.c | 6 ++---
net/decnet/dn_timer.c | 47 -----------------------------------------
7 files changed, 5 insertions(+), 80 deletions(-)


Signed-off-by: Adrian Bunk <bunk@stusta.de>

--- linux-2.6.10-rc3-mm1-full/net/decnet/af_decnet.c.old 2004-12-14 03:30:13.000000000 +0100
+++ linux-2.6.10-rc3-mm1-full/net/decnet/af_decnet.c 2004-12-14 03:47:00.000000000 +0100
@@ -246,7 +246,7 @@
write_unlock_bh(&dn_hash_lock);
}

-struct hlist_head *listen_hash(struct sockaddr_dn *addr)
+static struct hlist_head *listen_hash(struct sockaddr_dn *addr)
{
int i;
unsigned hash = addr->sdn_objnum;
@@ -447,7 +447,7 @@
dst_release(xchg(&sk->sk_dst_cache, NULL));
}

-struct sock *dn_alloc_sock(struct socket *sock, int gfp)
+static struct sock *dn_alloc_sock(struct socket *sock, int gfp)
{
struct dn_scp *scp;
struct sock *sk = sk_alloc(PF_DECnet, gfp, sizeof(struct dn_sock),
@@ -578,7 +578,6 @@
if (sk->sk_socket)
return 0;

- dn_stop_fast_timer(sk); /* unlikely, but possible that this is runninng */
if ((jiffies - scp->stamp) >= (HZ * decnet_time_wait)) {
dn_unhash_sock(sk);
sock_put(sk);
@@ -631,7 +630,6 @@
default:
printk(KERN_DEBUG "DECnet: dn_destroy_sock passed socket in invalid state\n");
case DN_O:
- dn_stop_fast_timer(sk);
dn_stop_slow_timer(sk);

dn_unhash_sock_bh(sk);
--- linux-2.6.10-rc3-mm1-full/include/net/dn_fib.h.old 2004-12-14 03:32:14.000000000 +0100
+++ linux-2.6.10-rc3-mm1-full/include/net/dn_fib.h 2004-12-14 03:32:19.000000000 +0100
@@ -117,7 +117,6 @@
extern void dn_fib_init(void);
extern void dn_fib_cleanup(void);

-extern int dn_fib_rt_message(struct sk_buff *skb);
extern int dn_fib_ioctl(struct socket *sock, unsigned int cmd,
unsigned long arg);
extern struct dn_fib_info *dn_fib_create_info(const struct rtmsg *r,
--- linux-2.6.10-rc3-mm1-full/net/decnet/dn_fib.c.old 2004-12-14 03:31:33.000000000 +0100
+++ linux-2.6.10-rc3-mm1-full/net/decnet/dn_fib.c 2004-12-14 03:32:31.000000000 +0100
@@ -60,7 +60,6 @@
static spinlock_t dn_fib_multipath_lock = SPIN_LOCK_UNLOCKED;
static struct dn_fib_info *dn_fib_info_list;
static rwlock_t dn_fib_info_lock = RW_LOCK_UNLOCKED;
-int dn_fib_info_cnt;

static struct
{
@@ -93,7 +92,6 @@
dev_put(nh->nh_dev);
nh->nh_dev = NULL;
} endfor_nexthops(fi);
- dn_fib_info_cnt--;
kfree(fi);
}

@@ -388,7 +386,6 @@
if (dn_fib_info_list)
dn_fib_info_list->fib_prev = fi;
dn_fib_info_list = fi;
- dn_fib_info_cnt++;
write_unlock(&dn_fib_info_lock);
return fi;

@@ -486,18 +483,6 @@
}


-/*
- * Punt to user via netlink for example, but for now
- * we just drop it.
- */
-int dn_fib_rt_message(struct sk_buff *skb)
-{
- kfree_skb(skb);
-
- return 0;
-}
-
-
static int dn_fib_check_attr(struct rtmsg *r, struct rtattr **rta)
{
int i;
--- linux-2.6.10-rc3-mm1-full/net/decnet/dn_neigh.c.old 2004-12-14 03:32:55.000000000 +0100
+++ linux-2.6.10-rc3-mm1-full/net/decnet/dn_neigh.c 2004-12-14 03:33:29.000000000 +0100
@@ -355,14 +355,6 @@
* basically does a neigh_lookup(), but without comparing the device
* field. This is required for the On-Ethernet cache
*/
-/*
- * Any traffic on a pointopoint link causes the timer to be reset
- * for the entry in the neighbour table.
- */
-void dn_neigh_pointopoint_notify(struct sk_buff *skb)
-{
- return;
-}

/*
* Pointopoint link receives a hello message
--- linux-2.6.10-rc3-mm1-full/net/decnet/dn_route.c.old 2004-12-14 03:33:53.000000000 +0100
+++ linux-2.6.10-rc3-mm1-full/net/decnet/dn_route.c 2004-12-14 03:34:54.000000000 +0100
@@ -99,9 +99,9 @@

static unsigned char dn_hiord_addr[6] = {0xAA,0x00,0x04,0x00,0x00,0x00};

-int dn_rt_min_delay = 2 * HZ;
-int dn_rt_max_delay = 10 * HZ;
-int dn_rt_mtu_expires = 10 * 60 * HZ;
+static const int dn_rt_min_delay = 2 * HZ;
+static const int dn_rt_max_delay = 10 * HZ;
+static const int dn_rt_mtu_expires = 10 * 60 * HZ;

static unsigned long dn_rt_deadline;

--- linux-2.6.10-rc3-mm1-full/include/net/dn.h.old 2004-12-14 03:35:13.000000000 +0100
+++ linux-2.6.10-rc3-mm1-full/include/net/dn.h 2004-12-14 03:46:38.000000000 +0100
@@ -220,8 +220,6 @@

extern void dn_start_slow_timer(struct sock *sk);
extern void dn_stop_slow_timer(struct sock *sk);
-extern void dn_start_fast_timer(struct sock *sk);
-extern void dn_stop_fast_timer(struct sock *sk);

extern dn_address decnet_address;
extern int decnet_debug_level;
--- linux-2.6.10-rc3-mm1-full/net/decnet/dn_timer.c.old 2004-12-14 03:35:29.000000000 +0100
+++ linux-2.6.10-rc3-mm1-full/net/decnet/dn_timer.c 2004-12-14 03:48:49.000000000 +0100
@@ -27,11 +27,9 @@
#include <net/dn.h>

/*
- * Fast timer is for delayed acks (200mS max)
* Slow timer is for everything else (n * 500mS)
*/

-#define FAST_INTERVAL (HZ/5)
#define SLOW_INTERVAL (HZ/2)

static void dn_slow_timer(unsigned long arg);
@@ -109,48 +107,3 @@
bh_unlock_sock(sk);
sock_put(sk);
}
-
-static void dn_fast_timer(unsigned long arg)
-{
- struct sock *sk = (struct sock *)arg;
- struct dn_scp *scp = DN_SK(sk);
-
- bh_lock_sock(sk);
- if (sock_owned_by_user(sk)) {
- scp->delack_timer.expires = jiffies + HZ / 20;
- add_timer(&scp->delack_timer);
- goto out;
- }
-
- scp->delack_pending = 0;
-
- if (scp->delack_fxn)
- scp->delack_fxn(sk);
-out:
- bh_unlock_sock(sk);
-}
-
-void dn_start_fast_timer(struct sock *sk)
-{
- struct dn_scp *scp = DN_SK(sk);
-
- if (!scp->delack_pending) {
- scp->delack_pending = 1;
- init_timer(&scp->delack_timer);
- scp->delack_timer.expires = jiffies + FAST_INTERVAL;
- scp->delack_timer.data = (unsigned long)sk;
- scp->delack_timer.function = dn_fast_timer;
- add_timer(&scp->delack_timer);
- }
-}
-
-void dn_stop_fast_timer(struct sock *sk)
-{
- struct dn_scp *scp = DN_SK(sk);
-
- if (scp->delack_pending) {
- scp->delack_pending = 0;
- del_timer(&scp->delack_timer);
- }
-}
-
-
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