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[NET]: Transform skb_queue_len() binary tests into skb_queue_empty() 

This is part of the grand scheme to eliminate the qlen
member of skb_queue_head, and subsequently remove the
'list' member of sk_buff.

Most users of skb_queue_len() want to know if the queue is
empty or not, and that's trivially done with skb_queue_empty()
which doesn't use the skb_queue_head->qlen member and instead
uses the queue list emptyness as the test.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2005-07-08 14:57:23 -07:00
parent a92b7b8057
commit b03efcfb21
34 changed files with 84 additions and 89 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/bluetooth/hci_vhci.c
View File

@ -120,7 +120,7 @@ static unsigned int hci_vhci_chr_poll(struct file *file, poll_table * wait)
poll_wait(file, &hci_vhci->read_wait, wait);
if (skb_queue_len(&hci_vhci->readq))
if (!skb_queue_empty(&hci_vhci->readq))
return POLLIN | POLLRDNORM;
return POLLOUT | POLLWRNORM;

3
drivers/isdn/hisax/isdnl1.c
View File

@ -279,7 +279,8 @@ BChannel_proc_xmt(struct BCState *bcs)
if (test_and_clear_bit(FLG_L1_PULL_REQ, &st->l1.Flags))
st->l1.l1l2(st, PH_PULL | CONFIRM, NULL);
if (!test_bit(BC_FLG_ACTIV, &bcs->Flag)) {
if (!test_bit(BC_FLG_BUSY, &bcs->Flag) && (!skb_queue_len(&bcs->squeue))) {
if (!test_bit(BC_FLG_BUSY, &bcs->Flag) &&
skb_queue_empty(&bcs->squeue)) {
st->l2.l2l1(st, PH_DEACTIVATE | CONFIRM, NULL);
}
}

17
drivers/isdn/hisax/isdnl2.c
View File

@ -108,7 +108,8 @@ static int l2addrsize(struct Layer2 *l2);
static void
set_peer_busy(struct Layer2 *l2) {
test_and_set_bit(FLG_PEER_BUSY, &l2->flag);
if (skb_queue_len(&l2->i_queue) || skb_queue_len(&l2->ui_queue))
if (!skb_queue_empty(&l2->i_queue) ||
!skb_queue_empty(&l2->ui_queue))
test_and_set_bit(FLG_L2BLOCK, &l2->flag);
}
@ -754,7 +755,7 @@ l2_restart_multi(struct FsmInst *fi, int event, void *arg)
st->l2.l2l3(st, DL_ESTABLISH | INDICATION, NULL);
if ((ST_L2_7==state) || (ST_L2_8 == state))
if (skb_queue_len(&st->l2.i_queue) && cansend(st))
if (!skb_queue_empty(&st->l2.i_queue) && cansend(st))
st->l2.l2l1(st, PH_PULL | REQUEST, NULL);
}
@ -810,7 +811,7 @@ l2_connected(struct FsmInst *fi, int event, void *arg)
if (pr != -1)
st->l2.l2l3(st, pr, NULL);
if (skb_queue_len(&st->l2.i_queue) && cansend(st))
if (!skb_queue_empty(&st->l2.i_queue) && cansend(st))
st->l2.l2l1(st, PH_PULL | REQUEST, NULL);
}
@ -1014,7 +1015,7 @@ l2_st7_got_super(struct FsmInst *fi, int event, void *arg)
if(typ != RR) FsmDelTimer(&st->l2.t203, 9);
restart_t200(st, 12);
}
if (skb_queue_len(&st->l2.i_queue) && (typ == RR))
if (!skb_queue_empty(&st->l2.i_queue) && (typ == RR))
st->l2.l2l1(st, PH_PULL | REQUEST, NULL);
} else
nrerrorrecovery(fi);
@ -1120,7 +1121,7 @@ l2_got_iframe(struct FsmInst *fi, int event, void *arg)
return;
}
if (skb_queue_len(&st->l2.i_queue) && (fi->state == ST_L2_7))
if (!skb_queue_empty(&st->l2.i_queue) && (fi->state == ST_L2_7))
st->l2.l2l1(st, PH_PULL | REQUEST, NULL);
if (test_and_clear_bit(FLG_ACK_PEND, &st->l2.flag))
enquiry_cr(st, RR, RSP, 0);
@ -1138,7 +1139,7 @@ l2_got_tei(struct FsmInst *fi, int event, void *arg)
test_and_set_bit(FLG_L3_INIT, &st->l2.flag);
} else
FsmChangeState(fi, ST_L2_4);
if (skb_queue_len(&st->l2.ui_queue))
if (!skb_queue_empty(&st->l2.ui_queue))
tx_ui(st);
}
@ -1301,7 +1302,7 @@ l2_pull_iqueue(struct FsmInst *fi, int event, void *arg)
FsmDelTimer(&st->l2.t203, 13);
FsmAddTimer(&st->l2.t200, st->l2.T200, EV_L2_T200, NULL, 11);
}
if (skb_queue_len(&l2->i_queue) && cansend(st))
if (!skb_queue_empty(&l2->i_queue) && cansend(st))
st->l2.l2l1(st, PH_PULL | REQUEST, NULL);
}
@ -1347,7 +1348,7 @@ l2_st8_got_super(struct FsmInst *fi, int event, void *arg)
}
invoke_retransmission(st, nr);
FsmChangeState(fi, ST_L2_7);
if (skb_queue_len(&l2->i_queue) && cansend(st))
if (!skb_queue_empty(&l2->i_queue) && cansend(st))
st->l2.l2l1(st, PH_PULL | REQUEST, NULL);
} else
nrerrorrecovery(fi);

2
drivers/isdn/hisax/isdnl3.c
View File

@ -302,7 +302,7 @@ release_l3_process(struct l3_process *p)
!test_bit(FLG_PTP, &p->st->l2.flag)) {
if (p->debug)
l3_debug(p->st, "release_l3_process: last process");
if (!skb_queue_len(&p->st->l3.squeue)) {
if (skb_queue_empty(&p->st->l3.squeue)) {
if (p->debug)
l3_debug(p->st, "release_l3_process: release link");
if (p->st->protocol != ISDN_PTYPE_NI1)

4
drivers/isdn/i4l/isdn_tty.c
View File

@ -1223,7 +1223,7 @@ isdn_tty_write(struct tty_struct *tty, const u_char * buf, int count)
total += c;
}
atomic_dec(&info->xmit_lock);
if ((info->xmit_count) || (skb_queue_len(&info->xmit_queue))) {
if ((info->xmit_count) || !skb_queue_empty(&info->xmit_queue)) {
if (m->mdmreg[REG_DXMT] & BIT_DXMT) {
isdn_tty_senddown(info);
isdn_tty_tint(info);
@ -1284,7 +1284,7 @@ isdn_tty_flush_chars(struct tty_struct *tty)
if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_flush_chars"))
return;
if ((info->xmit_count) || (skb_queue_len(&info->xmit_queue)))
if ((info->xmit_count) || !skb_queue_empty(&info->xmit_queue))
isdn_timer_ctrl(ISDN_TIMER_MODEMXMIT, 1);
}

4
drivers/isdn/icn/icn.c
View File

@ -304,12 +304,12 @@ icn_pollbchan_send(int channel, icn_card * card)
isdn_ctrl cmd;
if (!(card->sndcount[channel] || card->xskb[channel] ||
skb_queue_len(&card->spqueue[channel])))
!skb_queue_empty(&card->spqueue[channel])))
return;
if (icn_trymaplock_channel(card, mch)) {
while (sbfree &&
(card->sndcount[channel] ||
skb_queue_len(&card->spqueue[channel]) ||
!skb_queue_empty(&card->spqueue[channel]) ||
card->xskb[channel])) {
spin_lock_irqsave(&card->lock, flags);
if (card->xmit_lock[channel]) {

5
drivers/net/hamradio/scc.c
View File

@ -304,7 +304,7 @@ static inline void scc_discard_buffers(struct scc_channel *scc)
scc->tx_buff = NULL;
}
while (skb_queue_len(&scc->tx_queue))
while (!skb_queue_empty(&scc->tx_queue))
dev_kfree_skb(skb_dequeue(&scc->tx_queue));
spin_unlock_irqrestore(&scc->lock, flags);
@ -1126,8 +1126,7 @@ static void t_dwait(unsigned long channel)
if (scc->stat.tx_state == TXS_WAIT) /* maxkeyup or idle timeout */
{
if (skb_queue_len(&scc->tx_queue) == 0) /* nothing to send */
{
if (skb_queue_empty(&scc->tx_queue)) { /* nothing to send */
scc->stat.tx_state = TXS_IDLE;
netif_wake_queue(scc->dev); /* t_maxkeyup locked it. */
return;

2
drivers/net/ppp_async.c
View File

@ -364,7 +364,7 @@ ppp_asynctty_receive(struct tty_struct *tty, const unsigned char *buf,
spin_lock_irqsave(&ap->recv_lock, flags);
ppp_async_input(ap, buf, cflags, count);
spin_unlock_irqrestore(&ap->recv_lock, flags);
if (skb_queue_len(&ap->rqueue))
if (!skb_queue_empty(&ap->rqueue))
tasklet_schedule(&ap->tsk);
ap_put(ap);
if (test_and_clear_bit(TTY_THROTTLED, &tty->flags)

12
drivers/net/ppp_generic.c
View File

@ -1237,8 +1237,8 @@ static int ppp_mp_explode(struct ppp *ppp, struct sk_buff *skb)
pch = list_entry(list, struct channel, clist);
navail += pch->avail = (pch->chan != NULL);
if (pch->avail) {
if (skb_queue_len(&pch->file.xq) == 0
|| !pch->had_frag) {
if (skb_queue_empty(&pch->file.xq) ||
!pch->had_frag) {
pch->avail = 2;
++nfree;
}
@ -1374,8 +1374,8 @@ static int ppp_mp_explode(struct ppp *ppp, struct sk_buff *skb)
/* try to send it down the channel */
chan = pch->chan;
if (skb_queue_len(&pch->file.xq)
|| !chan->ops->start_xmit(chan, frag))
if (!skb_queue_empty(&pch->file.xq) ||
!chan->ops->start_xmit(chan, frag))
skb_queue_tail(&pch->file.xq, frag);
pch->had_frag = 1;
p += flen;
@ -1412,7 +1412,7 @@ ppp_channel_push(struct channel *pch)
spin_lock_bh(&pch->downl);
if (pch->chan != 0) {
while (skb_queue_len(&pch->file.xq) > 0) {
while (!skb_queue_empty(&pch->file.xq)) {
skb = skb_dequeue(&pch->file.xq);
if (!pch->chan->ops->start_xmit(pch->chan, skb)) {
/* put the packet back and try again later */
@ -1426,7 +1426,7 @@ ppp_channel_push(struct channel *pch)
}
spin_unlock_bh(&pch->downl);
/* see if there is anything from the attached unit to be sent */
if (skb_queue_len(&pch->file.xq) == 0) {
if (skb_queue_empty(&pch->file.xq)) {
read_lock_bh(&pch->upl);
ppp = pch->ppp;
if (ppp != 0)

2
drivers/net/ppp_synctty.c
View File

@ -406,7 +406,7 @@ ppp_sync_receive(struct tty_struct *tty, const unsigned char *buf,
spin_lock_irqsave(&ap->recv_lock, flags);
ppp_sync_input(ap, buf, cflags, count);
spin_unlock_irqrestore(&ap->recv_lock, flags);
if (skb_queue_len(&ap->rqueue))
if (!skb_queue_empty(&ap->rqueue))
tasklet_schedule(&ap->tsk);
sp_put(ap);
if (test_and_clear_bit(TTY_THROTTLED, &tty->flags)

2
drivers/net/tun.c
View File

@ -215,7 +215,7 @@ static unsigned int tun_chr_poll(struct file *file, poll_table * wait)
poll_wait(file, &tun->read_wait, wait);
if (skb_queue_len(&tun->readq))
if (!skb_queue_empty(&tun->readq))
mask |= POLLIN | POLLRDNORM;
return mask;

4
drivers/net/wireless/airo.c
View File

@ -2374,7 +2374,7 @@ void stop_airo_card( struct net_device *dev, int freeres )
/*
* Clean out tx queue
*/
if (test_bit(FLAG_MPI, &ai->flags) && skb_queue_len (&ai->txq) > 0) {
if (test_bit(FLAG_MPI, &ai->flags) && !skb_queue_empty(&ai->txq)) {
struct sk_buff *skb = NULL;
for (;(skb = skb_dequeue(&ai->txq));)
dev_kfree_skb(skb);
@ -3287,7 +3287,7 @@ static irqreturn_t airo_interrupt ( int irq, void* dev_id, struct pt_regs *regs)
if (status & EV_TXEXC)
get_tx_error(apriv, -1);
spin_lock_irqsave(&apriv->aux_lock, flags);
if (skb_queue_len (&apriv->txq)) {
if (!skb_queue_empty(&apriv->txq)) {
spin_unlock_irqrestore(&apriv->aux_lock,flags);
mpi_send_packet (dev);
} else {

4
drivers/s390/net/claw.c
View File

@ -428,7 +428,7 @@ claw_pack_skb(struct claw_privbk *privptr)
new_skb = NULL; /* assume no dice */
pkt_cnt = 0;
CLAW_DBF_TEXT(4,trace,"PackSKBe");
if (skb_queue_len(&p_ch->collect_queue) > 0) {
if (!skb_queue_empty(&p_ch->collect_queue)) {
/* some data */
held_skb = skb_dequeue(&p_ch->collect_queue);
if (p_env->packing != DO_PACKED)
@ -1254,7 +1254,7 @@ claw_write_next ( struct chbk * p_ch )
privptr = (struct claw_privbk *) dev->priv;
claw_free_wrt_buf( dev );
if ((privptr->write_free_count > 0) &&
(skb_queue_len(&p_ch->collect_queue) > 0)) {
!skb_queue_empty(&p_ch->collect_queue)) {
pk_skb = claw_pack_skb(privptr);
while (pk_skb != NULL) {
rc = claw_hw_tx( pk_skb, dev,1);

6
drivers/s390/net/ctctty.c
View File

@ -156,7 +156,7 @@ ctc_tty_readmodem(ctc_tty_info *info)
skb_queue_head(&info->rx_queue, skb);
else {
kfree_skb(skb);
ret = skb_queue_len(&info->rx_queue);
ret = !skb_queue_empty(&info->rx_queue);
}
}
}
@ -530,7 +530,7 @@ ctc_tty_write(struct tty_struct *tty, const u_char * buf, int count)
total += c;
count -= c;
}
if (skb_queue_len(&info->tx_queue)) {
if (!skb_queue_empty(&info->tx_queue)) {
info->lsr &= ~UART_LSR_TEMT;
tasklet_schedule(&info->tasklet);
}
@ -594,7 +594,7 @@ ctc_tty_flush_chars(struct tty_struct *tty)
return;
if (ctc_tty_paranoia_check(info, tty->name, "ctc_tty_flush_chars"))
return;
if (tty->stopped || tty->hw_stopped || (!skb_queue_len(&info->tx_queue)))
if (tty->stopped || tty->hw_stopped || skb_queue_empty(&info->tx_queue))
return;
tasklet_schedule(&info->tasklet);
}

6
drivers/usb/net/usbnet.c
View File

@ -3227,9 +3227,9 @@ static int usbnet_stop (struct net_device *net)
temp = unlink_urbs (dev, &dev->txq) + unlink_urbs (dev, &dev->rxq);
// maybe wait for deletions to finish.
while (skb_queue_len (&dev->rxq)
&& skb_queue_len (&dev->txq)
&& skb_queue_len (&dev->done)) {
while (!skb_queue_empty(&dev->rxq) &&
!skb_queue_empty(&dev->txq) &&
!skb_queue_empty(&dev->done)) {
msleep(UNLINK_TIMEOUT_MS);
if (netif_msg_ifdown (dev))
devdbg (dev, "waited for %d urb completions", temp);

2
include/net/irda/irda_device.h
View File

@ -224,7 +224,7 @@ int irda_device_is_receiving(struct net_device *dev);
/* Interface for internal use */
static inline int irda_device_txqueue_empty(const struct net_device *dev)
{
return (skb_queue_len(&dev->qdisc->q) == 0);
return skb_queue_empty(&dev->qdisc->q);
}
int irda_device_set_raw_mode(struct net_device* self, int status);
struct net_device *alloc_irdadev(int sizeof_priv);

2
include/net/tcp.h
View File

@ -991,7 +991,7 @@ static __inline__ void tcp_fast_path_on(struct tcp_sock *tp)
static inline void tcp_fast_path_check(struct sock *sk, struct tcp_sock *tp)
{
if (skb_queue_len(&tp->out_of_order_queue) == 0 &&
if (skb_queue_empty(&tp->out_of_order_queue) &&
tp->rcv_wnd &&
atomic_read(&sk->sk_rmem_alloc) < sk->sk_rcvbuf &&
!tp->urg_data)

6
net/bluetooth/cmtp/core.c
View File

@ -213,7 +213,7 @@ static int cmtp_send_frame(struct cmtp_session *session, unsigned char *data, in
return kernel_sendmsg(sock, &msg, &iv, 1, len);
}
static int cmtp_process_transmit(struct cmtp_session *session)
static void cmtp_process_transmit(struct cmtp_session *session)
{
struct sk_buff *skb, *nskb;
unsigned char *hdr;
@ -223,7 +223,7 @@ static int cmtp_process_transmit(struct cmtp_session *session)
if (!(nskb = alloc_skb(session->mtu, GFP_ATOMIC))) {
BT_ERR("Can't allocate memory for new frame");
return -ENOMEM;
return;
}
while ((skb = skb_dequeue(&session->transmit))) {
@ -275,8 +275,6 @@ static int cmtp_process_transmit(struct cmtp_session *session)
cmtp_send_frame(session, nskb->data, nskb->len);
kfree_skb(nskb);
return skb_queue_len(&session->transmit);
}
static int cmtp_session(void *arg)

5
net/bluetooth/hidp/core.c
View File

@ -428,7 +428,7 @@ static int hidp_send_frame(struct socket *sock, unsigned char *data, int len)
return kernel_sendmsg(sock, &msg, &iv, 1, len);
}
static int hidp_process_transmit(struct hidp_session *session)
static void hidp_process_transmit(struct hidp_session *session)
{
struct sk_buff *skb;
@ -453,9 +453,6 @@ static int hidp_process_transmit(struct hidp_session *session)
hidp_set_timer(session);
kfree_skb(skb);
}
return skb_queue_len(&session->ctrl_transmit) +
skb_queue_len(&session->intr_transmit);
}
static int hidp_session(void *arg)

7
net/bluetooth/rfcomm/sock.c
View File

@ -590,8 +590,11 @@ static long rfcomm_sock_data_wait(struct sock *sk, long timeo)
for (;;) {
set_current_state(TASK_INTERRUPTIBLE);
if (skb_queue_len(&sk->sk_receive_queue) || sk->sk_err || (sk->sk_shutdown & RCV_SHUTDOWN) ||
signal_pending(current) || !timeo)
if (!skb_queue_empty(&sk->sk_receive_queue) ||
sk->sk_err ||
(sk->sk_shutdown & RCV_SHUTDOWN) ||
signal_pending(current) ||
!timeo)
break;
set_bit(SOCK_ASYNC_WAITDATA, &sk->sk_socket->flags);

2
net/bluetooth/rfcomm/tty.c
View File

@ -781,7 +781,7 @@ static int rfcomm_tty_chars_in_buffer(struct tty_struct *tty)
BT_DBG("tty %p dev %p", tty, dev);
if (skb_queue_len(&dlc->tx_queue))
if (!skb_queue_empty(&dlc->tx_queue))
return dlc->mtu;
return 0;

10
net/decnet/af_decnet.c
View File

@ -536,7 +536,7 @@ static void dn_keepalive(struct sock *sk)
* we are double checking that we are not sending too
* many of these keepalive frames.
*/
if (skb_queue_len(&scp->other_xmit_queue) == 0)
if (skb_queue_empty(&scp->other_xmit_queue))
dn_nsp_send_link(sk, DN_NOCHANGE, 0);
}
@ -1191,7 +1191,7 @@ static unsigned int dn_poll(struct file *file, struct socket *sock, poll_table
struct dn_scp *scp = DN_SK(sk);
int mask = datagram_poll(file, sock, wait);
if (skb_queue_len(&scp->other_receive_queue))
if (!skb_queue_empty(&scp->other_receive_queue))
mask |= POLLRDBAND;
return mask;
@ -1214,7 +1214,7 @@ static int dn_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
case SIOCATMARK:
lock_sock(sk);
val = (skb_queue_len(&scp->other_receive_queue) != 0);
val = !skb_queue_empty(&scp->other_receive_queue);
if (scp->state != DN_RUN)
val = -ENOTCONN;
release_sock(sk);
@ -1630,7 +1630,7 @@ static int dn_data_ready(struct sock *sk, struct sk_buff_head *q, int flags, int
int len = 0;
if (flags & MSG_OOB)
return skb_queue_len(q) ? 1 : 0;
return !skb_queue_empty(q) ? 1 : 0;
while(skb != (struct sk_buff *)q) {
struct dn_skb_cb *cb = DN_SKB_CB(skb);
@ -1707,7 +1707,7 @@ static int dn_recvmsg(struct kiocb *iocb, struct socket *sock,
if (sk->sk_err)
goto out;
if (skb_queue_len(&scp->other_receive_queue)) {
if (!skb_queue_empty(&scp->other_receive_queue)) {
if (!(flags & MSG_OOB)) {
msg->msg_flags |= MSG_OOB;
if (!scp->other_report) {

3
net/decnet/dn_nsp_out.c
View File

@ -342,7 +342,8 @@ int dn_nsp_xmit_timeout(struct sock *sk)
dn_nsp_output(sk);
if (skb_queue_len(&scp->data_xmit_queue) || skb_queue_len(&scp->other_xmit_queue))
if (!skb_queue_empty(&scp->data_xmit_queue) ||
!skb_queue_empty(&scp->other_xmit_queue))
scp->persist = dn_nsp_persist(sk);
return 0;

8
net/ipv4/tcp.c
View File

@ -1105,7 +1105,7 @@ static void tcp_prequeue_process(struct sock *sk)
struct sk_buff *skb;
struct tcp_sock *tp = tcp_sk(sk);
NET_ADD_STATS_USER(LINUX_MIB_TCPPREQUEUED, skb_queue_len(&tp->ucopy.prequeue));
NET_INC_STATS_USER(LINUX_MIB_TCPPREQUEUED);
/* RX process wants to run with disabled BHs, though it is not
* necessary */
@ -1369,7 +1369,7 @@ int tcp_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
* is not empty. It is more elegant, but eats cycles,
* unfortunately.
*/
if (skb_queue_len(&tp->ucopy.prequeue))
if (!skb_queue_empty(&tp->ucopy.prequeue))
goto do_prequeue;
/* __ Set realtime policy in scheduler __ */
@ -1394,7 +1394,7 @@ int tcp_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
}
if (tp->rcv_nxt == tp->copied_seq &&
skb_queue_len(&tp->ucopy.prequeue)) {
!skb_queue_empty(&tp->ucopy.prequeue)) {
do_prequeue:
tcp_prequeue_process(sk);
@ -1476,7 +1476,7 @@ int tcp_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
} while (len > 0);
if (user_recv) {
if (skb_queue_len(&tp->ucopy.prequeue)) {
if (!skb_queue_empty(&tp->ucopy.prequeue)) {
int chunk;
tp->ucopy.len = copied > 0 ? len : 0;

11
net/ipv4/tcp_input.c
View File

@ -2802,7 +2802,7 @@ static void tcp_sack_remove(struct tcp_sock *tp)
int this_sack;
/* Empty ofo queue, hence, all the SACKs are eaten. Clear. */
if (skb_queue_len(&tp->out_of_order_queue) == 0) {
if (skb_queue_empty(&tp->out_of_order_queue)) {
tp->rx_opt.num_sacks = 0;
tp->rx_opt.eff_sacks = tp->rx_opt.dsack;
return;
@ -2935,13 +2935,13 @@ static void tcp_data_queue(struct sock *sk, struct sk_buff *skb)
if(th->fin)
tcp_fin(skb, sk, th);
if (skb_queue_len(&tp->out_of_order_queue)) {
if (!skb_queue_empty(&tp->out_of_order_queue)) {
tcp_ofo_queue(sk);
/* RFC2581. 4.2. SHOULD send immediate ACK, when
* gap in queue is filled.
*/
if (!skb_queue_len(&tp->out_of_order_queue))
if (skb_queue_empty(&tp->out_of_order_queue))
tp->ack.pingpong = 0;
}
@ -3249,9 +3249,8 @@ static int tcp_prune_queue(struct sock *sk)
* This must not ever occur. */
/* First, purge the out_of_order queue. */
if (skb_queue_len(&tp->out_of_order_queue)) {
NET_ADD_STATS_BH(LINUX_MIB_OFOPRUNED,
skb_queue_len(&tp->out_of_order_queue));
if (!skb_queue_empty(&tp->out_of_order_queue)) {
NET_INC_STATS_BH(LINUX_MIB_OFOPRUNED);
__skb_queue_purge(&tp->out_of_order_queue);
/* Reset SACK state. A conforming SACK implementation will

5
net/ipv4/tcp_timer.c
View File

@ -231,11 +231,10 @@ static void tcp_delack_timer(unsigned long data)
}
tp->ack.pending &= ~TCP_ACK_TIMER;
if (skb_queue_len(&tp->ucopy.prequeue)) {
if (!skb_queue_empty(&tp->ucopy.prequeue)) {
struct sk_buff *skb;
NET_ADD_STATS_BH(LINUX_MIB_TCPSCHEDULERFAILED,
skb_queue_len(&tp->ucopy.prequeue));
NET_INC_STATS_BH(LINUX_MIB_TCPSCHEDULERFAILED);
while ((skb = __skb_dequeue(&tp->ucopy.prequeue)) != NULL)
sk->sk_backlog_rcv(sk, skb);

3
net/irda/irlap.c
View File

@ -445,9 +445,8 @@ void irlap_disconnect_request(struct irlap_cb *self)
IRDA_ASSERT(self->magic == LAP_MAGIC, return;);
/* Don't disconnect until all data frames are successfully sent */
if (skb_queue_len(&self->txq) > 0) {
if (!skb_queue_empty(&self->txq)) {
self->disconnect_pending = TRUE;
return;
}

14
net/irda/irlap_event.c
View File

@ -191,7 +191,7 @@ static void irlap_start_poll_timer(struct irlap_cb *self, int timeout)
* Send out the RR frames faster if our own transmit queue is empty, or
* if the peer is busy. The effect is a much faster conversation
*/
if ((skb_queue_len(&self->txq) == 0) || (self->remote_busy)) {
if (skb_queue_empty(&self->txq) || self->remote_busy) {
if (self->fast_RR == TRUE) {
/*
* Assert that the fast poll timer has not reached the
@ -263,7 +263,7 @@ void irlap_do_event(struct irlap_cb *self, IRLAP_EVENT event,
IRDA_DEBUG(2, "%s() : queue len = %d\n", __FUNCTION__,
skb_queue_len(&self->txq));
if (skb_queue_len(&self->txq)) {
if (!skb_queue_empty(&self->txq)) {
/* Prevent race conditions with irlap_data_request() */
self->local_busy = TRUE;
@ -1074,7 +1074,7 @@ static int irlap_state_xmit_p(struct irlap_cb *self, IRLAP_EVENT event,
#else /* CONFIG_IRDA_DYNAMIC_WINDOW */
/* Window has been adjusted for the max packet
* size, so much simpler... - Jean II */
nextfit = (skb_queue_len(&self->txq) > 0);
nextfit = !skb_queue_empty(&self->txq);
#endif /* CONFIG_IRDA_DYNAMIC_WINDOW */
/*
* Send data with poll bit cleared only if window > 1
@ -1814,7 +1814,7 @@ static int irlap_state_xmit_s(struct irlap_cb *self, IRLAP_EVENT event,
#else /* CONFIG_IRDA_DYNAMIC_WINDOW */
/* Window has been adjusted for the max packet
* size, so much simpler... - Jean II */
nextfit = (skb_queue_len(&self->txq) > 0);
nextfit = !skb_queue_empty(&self->txq);
#endif /* CONFIG_IRDA_DYNAMIC_WINDOW */
/*
* Send data with final bit cleared only if window > 1
@ -1937,7 +1937,7 @@ static int irlap_state_nrm_s(struct irlap_cb *self, IRLAP_EVENT event,
irlap_data_indication(self, skb, FALSE);
/* Any pending data requests? */
if ((skb_queue_len(&self->txq) > 0) &&
if (!skb_queue_empty(&self->txq) &&
(self->window > 0))
{
self->ack_required = TRUE;
@ -2038,7 +2038,7 @@ static int irlap_state_nrm_s(struct irlap_cb *self, IRLAP_EVENT event,
/*
* Any pending data requests?
*/
if ((skb_queue_len(&self->txq) > 0) &&
if (!skb_queue_empty(&self->txq) &&
(self->window > 0) && !self->remote_busy)
{
irlap_data_indication(self, skb, TRUE);
@ -2069,7 +2069,7 @@ static int irlap_state_nrm_s(struct irlap_cb *self, IRLAP_EVENT event,
*/
nr_status = irlap_validate_nr_received(self, info->nr);
if (nr_status == NR_EXPECTED) {
if ((skb_queue_len( &self->txq) > 0) &&
if (!skb_queue_empty(&self->txq) &&
(self->window > 0)) {
self->remote_busy = FALSE;

8
net/irda/irlap_frame.c
View File

@ -1018,11 +1018,10 @@ void irlap_resend_rejected_frames(struct irlap_cb *self, int command)
/*
* We can now fill the window with additional data frames
*/
while (skb_queue_len( &self->txq) > 0) {
while (!skb_queue_empty(&self->txq)) {
IRDA_DEBUG(0, "%s(), sending additional frames!\n", __FUNCTION__);
if ((skb_queue_len( &self->txq) > 0) &&
(self->window > 0)) {
if (self->window > 0) {
skb = skb_dequeue( &self->txq);
IRDA_ASSERT(skb != NULL, return;);
@ -1031,8 +1030,7 @@ void irlap_resend_rejected_frames(struct irlap_cb *self, int command)
* bit cleared
*/
if ((self->window > 1) &&
skb_queue_len(&self->txq) > 0)
{
!skb_queue_empty(&self->txq)) {
irlap_send_data_primary(self, skb);
} else {
irlap_send_data_primary_poll(self, skb);

2
net/irda/irttp.c
View File

@ -1513,7 +1513,7 @@ int irttp_disconnect_request(struct tsap_cb *self, struct sk_buff *userdata,
/*
* Check if there is still data segments in the transmit queue
*/
if (skb_queue_len(&self->tx_queue) > 0) {
if (!skb_queue_empty(&self->tx_queue)) {
if (priority == P_HIGH) {
/*
* No need to send the queued data, if we are

2
net/llc/llc_c_ev.c
View File

@ -84,7 +84,7 @@ static u16 llc_util_nr_inside_tx_window(struct sock *sk, u8 nr)
if (llc->dev->flags & IFF_LOOPBACK)
goto out;
rc = 1;
if (!skb_queue_len(&llc->pdu_unack_q))
if (skb_queue_empty(&llc->pdu_unack_q))
goto out;
skb = skb_peek(&llc->pdu_unack_q);
pdu = llc_pdu_sn_hdr(skb);

2
net/netlink/af_netlink.c
View File

@ -858,7 +858,7 @@ static inline void netlink_rcv_wake(struct sock *sk)
{
struct netlink_sock *nlk = nlk_sk(sk);
if (!skb_queue_len(&sk->sk_receive_queue))
if (skb_queue_empty(&sk->sk_receive_queue))
clear_bit(0, &nlk->state);
if (!test_bit(0, &nlk->state))
wake_up_interruptible(&nlk->wait);

2
net/sched/sch_red.c
View File

@ -385,7 +385,7 @@ static int red_change(struct Qdisc *sch, struct rtattr *opt)
memcpy(q->Stab, RTA_DATA(tb[TCA_RED_STAB-1]), 256);
q->qcount = -1;
if (skb_queue_len(&sch->q) == 0)
if (skb_queue_empty(&sch->q))
PSCHED_SET_PASTPERFECT(q->qidlestart);
sch_tree_unlock(sch);
return 0;

4
net/unix/af_unix.c
View File

@ -302,7 +302,7 @@ static void unix_write_space(struct sock *sk)
* may receive messages only from that peer. */
static void unix_dgram_disconnected(struct sock *sk, struct sock *other)
{
if (skb_queue_len(&sk->sk_receive_queue)) {
if (!skb_queue_empty(&sk->sk_receive_queue)) {
skb_queue_purge(&sk->sk_receive_queue);
wake_up_interruptible_all(&unix_sk(sk)->peer_wait);
@ -1619,7 +1619,7 @@ static long unix_stream_data_wait(struct sock * sk, long timeo)
for (;;) {
prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
if (skb_queue_len(&sk->sk_receive_queue) ||
if (!skb_queue_empty(&sk->sk_receive_queue) ||
sk->sk_err ||
(sk->sk_shutdown & RCV_SHUTDOWN) ||
signal_pending(current) ||