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hyperv/hn: Allow enabling IPv6 TX checksum offloading and IPv6 TSO.

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They are still disabled by default.

MFC after:	1 week
Sponsored by:	Microsoft
Differential Revision:	https://reviews.freebsd.org/D8490
This commit is contained in:
Sepherosa Ziehau 2016-11-21 05:41:08 +00:00
parent fdc4f478ed
commit 7960e6ba99
2 changed files with 7 additions and 4 deletions
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2
sys/dev/hyperv/netvsc/hn_rndis.c
View File

@ -602,7 +602,6 @@ hn_rndis_conf_offload(struct hn_softc *sc, int mtu)
if ((hwcaps.ndis_lsov2.ndis_ip6_encap & NDIS_OFFLOAD_ENCAP_8023) &&
(hwcaps.ndis_lsov2.ndis_ip6_opts & HN_NDIS_LSOV2_CAP_IP6) ==
HN_NDIS_LSOV2_CAP_IP6) {
#ifdef notyet
caps |= HN_CAP_TSO6;
params.ndis_lsov2_ip6 = NDIS_OFFLOAD_LSOV2_ON;
@ -610,7 +609,6 @@ hn_rndis_conf_offload(struct hn_softc *sc, int mtu)
tso_maxsz = hwcaps.ndis_lsov2.ndis_ip6_maxsz;
if (hwcaps.ndis_lsov2.ndis_ip6_minsg > tso_minsg)
tso_minsg = hwcaps.ndis_lsov2.ndis_ip6_minsg;
#endif
}
sc->hn_ndis_tso_szmax = 0;
sc->hn_ndis_tso_sgmin = 0;

9
sys/dev/hyperv/netvsc/if_hn.c
View File

@ -1127,6 +1127,13 @@ hn_attach(device_t dev)
/* Enable all available capabilities by default. */
ifp->if_capenable = ifp->if_capabilities;
/*
* Disable IPv6 TSO and TXCSUM by default, they still can
* be enabled through SIOCSIFCAP.
*/
ifp->if_capenable &= ~(IFCAP_TXCSUM_IPV6 | IFCAP_TSO6);
ifp->if_hwassist &= ~(HN_CSUM_IP6_MASK | CSUM_IP6_TSO);
if (ifp->if_capabilities & (IFCAP_TSO6 | IFCAP_TSO4)) {
hn_set_tso_maxsize(sc, hn_tso_maxlen, ETHERMTU);
ifp->if_hw_tsomaxsegcount = HN_TX_DATA_SEGCNT_MAX;
@ -3646,12 +3653,10 @@ hn_fixup_tx_data(struct hn_softc *sc)
csum_assist |= CSUM_IP_TCP;
if (sc->hn_caps & HN_CAP_UDP4CS)
csum_assist |= CSUM_IP_UDP;
#ifdef notyet
if (sc->hn_caps & HN_CAP_TCP6CS)
csum_assist |= CSUM_IP6_TCP;
if (sc->hn_caps & HN_CAP_UDP6CS)
csum_assist |= CSUM_IP6_UDP;
#endif
for (i = 0; i < sc->hn_tx_ring_cnt; ++i)
sc->hn_tx_ring[i].hn_csum_assist = csum_assist;