hyperv/hn: Update VF's ibytes properly under transparent VF mode.
While, I'm here add comment about why updating VF's imcast stat is not necessary. MFC after: 3 days Sponsored by: Microsoft Differential Revision: https://reviews.freebsd.org/D11948
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svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=322483
@ -1266,16 +1266,37 @@ hn_xpnt_vf_input(struct ifnet *vf_ifp, struct mbuf *m)
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rm_runlock(&hn_vfmap_lock, &pt);
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if (hn_ifp != NULL) {
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/*
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* Fix up rcvif and go through hn(4)'s if_input and
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* increase ipackets.
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*/
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for (mn = m; mn != NULL; mn = mn->m_nextpkt) {
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/* Allow tapping on the VF. */
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/*
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* Allow tapping on the VF.
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*/
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ETHER_BPF_MTAP(vf_ifp, mn);
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/*
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* Update VF stats.
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*/
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if ((vf_ifp->if_capenable & IFCAP_HWSTATS) == 0) {
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if_inc_counter(vf_ifp, IFCOUNTER_IBYTES,
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mn->m_pkthdr.len);
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}
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/*
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* XXX IFCOUNTER_IMCAST
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* This stat updating is kinda invasive, since it
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* requires two checks on the mbuf: the length check
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* and the ethernet header check. As of this write,
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* all multicast packets go directly to hn(4), which
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* makes imcast stat updating in the VF a try in vian.
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*/
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/*
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* Fix up rcvif and increase hn(4)'s ipackets.
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*/
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mn->m_pkthdr.rcvif = hn_ifp;
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if_inc_counter(hn_ifp, IFCOUNTER_IPACKETS, 1);
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}
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/*
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* Go through hn(4)'s if_input.
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*/
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hn_ifp->if_input(hn_ifp, m);
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} else {
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/*
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