Author: sephe Date: Mon Aug 14 05:30:02 2017 New Revision: 322483 URL: https://svnweb.freebsd.org/changeset/base/322483
Log: 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 Modified: head/sys/dev/hyperv/netvsc/if_hn.c Modified: head/sys/dev/hyperv/netvsc/if_hn.c ============================================================================== --- head/sys/dev/hyperv/netvsc/if_hn.c Mon Aug 14 04:48:35 2017 (r322482) +++ head/sys/dev/hyperv/netvsc/if_hn.c Mon Aug 14 05:30:02 2017 (r322483) @@ -1266,16 +1266,37 @@ hn_xpnt_vf_input(struct ifnet *vf_ifp, struct mbuf *m) rm_runlock(&hn_vfmap_lock, &pt); if (hn_ifp != NULL) { - /* - * Fix up rcvif and go through hn(4)'s if_input and - * increase ipackets. - */ for (mn = m; mn != NULL; mn = mn->m_nextpkt) { - /* Allow tapping on the VF. */ + /* + * Allow tapping on the VF. + */ ETHER_BPF_MTAP(vf_ifp, mn); + + /* + * Update VF stats. + */ + if ((vf_ifp->if_capenable & IFCAP_HWSTATS) == 0) { + if_inc_counter(vf_ifp, IFCOUNTER_IBYTES, + mn->m_pkthdr.len); + } + /* + * XXX IFCOUNTER_IMCAST + * This stat updating is kinda invasive, since it + * requires two checks on the mbuf: the length check + * and the ethernet header check. As of this write, + * all multicast packets go directly to hn(4), which + * makes imcast stat updating in the VF a try in vian. + */ + + /* + * Fix up rcvif and increase hn(4)'s ipackets. + */ mn->m_pkthdr.rcvif = hn_ifp; if_inc_counter(hn_ifp, IFCOUNTER_IPACKETS, 1); } + /* + * Go through hn(4)'s if_input. + */ hn_ifp->if_input(hn_ifp, m); } else { /* _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
