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Set appropriate value for if_snd.ifq_maxlen; keeping it too low has a

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bad impact on performances.
This commit is contained in:
bouyer 2006-10-15 13:34:17 +00:00
parent cbba26f6cd
commit f3449bfa41
1 changed files with 6 additions and 4 deletions
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10
sys/arch/xen/xen/xennetback_xenbus.c
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@ -1,4 +1,4 @@
/* $NetBSD: xennetback_xenbus.c,v 1.11 2006/07/12 15:03:08 yamt Exp $ */
/* $NetBSD: xennetback_xenbus.c,v 1.12 2006/10/15 13:34:17 bouyer Exp $ */
/*
* Copyright (c) 2006 Manuel Bouyer.
@ -313,7 +313,7 @@ xennetback_xenbus_create(struct xenbus_device *xbusd)
ifp->if_flags =
IFF_BROADCAST|IFF_SIMPLEX|IFF_NOTRAILERS|IFF_MULTICAST;
ifp->if_snd.ifq_maxlen =
max(ifqmaxlen, /*NETIF_RX_RING_SIZE XXX*/0 * 2);
max(ifqmaxlen, NET_TX_RING_SIZE * 2);
ifp->if_capabilities = IFCAP_CSUM_TCPv4_Tx | IFCAP_CSUM_UDPv4_Tx;
ifp->if_ioctl = xennetback_ifioctl;
ifp->if_start = xennetback_ifstart;
@ -729,9 +729,11 @@ xennetback_evthandler(void *arg)
a lot of work is needed in the tcp stack to handle read-only ext storage
so always copy for now.
if (((req_cons + 1) & (NET_TX_RING_SIZE - 1)) ==
(xneti->xni_txring.rsp_prod_pvt & (NET_TX_RING_SIZE - 1))) {
(xneti->xni_txring.rsp_prod_pvt & (NET_TX_RING_SIZE - 1)))
#else
if (1)
#endif /* notyet */
if (1) {
{
/*
* This is the last TX buffer. Copy the data and
* ack it. Delaying it until the mbuf is