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Don't call m_aux_find() in the inner loop when creating the Tx 

descriptor list.  Instead, call it once and remember the result,
and only call it looking for VLAN tags if VLANs are configured
on the interface.
This commit is contained in:
thorpej 2002-06-27 23:21:34 +00:00
parent b55257ed7e
commit b7af161065
1 changed files with 4 additions and 2 deletions
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6
sys/dev/pci/if_bge.c
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@ -1,4 +1,4 @@
/* $NetBSD: if_bge.c,v 1.5 2002/06/27 22:31:30 thorpej Exp $ */
/* $NetBSD: if_bge.c,v 1.6 2002/06/27 23:21:34 thorpej Exp $ */
/*
* Copyright (c) 2001 Wind River Systems
* Copyright (c) 1997, 1998, 1999, 2001
@ -2349,6 +2349,9 @@ bge_encap(sc, m_head, txidx)
BUS_DMA_NOWAIT))
return(ENOBUFS);
n = sc->ethercom.ec_nvlans ?
m_aux_find(m_head, AF_LINK, ETHERTYPE_VLAN) : NULL;
for (i = 0; i < dmamap->dm_nsegs; i++) {
f = &sc->bge_rdata->bge_tx_ring[frag];
if (sc->bge_cdata.bge_tx_chain[frag] != NULL)
@ -2357,7 +2360,6 @@ bge_encap(sc, m_head, txidx)
f->bge_len = dmamap->dm_segs[i].ds_len;
f->bge_flags = csum_flags;
n = m_aux_find(m_head, AF_LINK, ETHERTYPE_VLAN);
if (n != NULL) {
f->bge_flags |= BGE_TXBDFLAG_VLAN_TAG;
f->bge_vlan_tag = *mtod(n, int *);