diff options
Diffstat (limited to 'sys/dev')
| -rw-r--r-- | sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c | 37 |
1 files changed, 21 insertions, 16 deletions
diff --git a/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c b/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c index acb7eb1528e2..b475c23beb16 100644 --- a/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c +++ b/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c @@ -1783,19 +1783,6 @@ hn_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) break; } - /* Obtain and record requested MTU */ - ifp->if_mtu = ifr->ifr_mtu; - -#if __FreeBSD_version >= 1100099 - /* - * Make sure that LRO aggregation length limit is still - * valid, after the MTU change. - */ - if (sc->hn_rx_ring[0].hn_lro.lro_length_lim < - HN_LRO_LENLIM_MIN(ifp)) - hn_set_lro_lenlim(sc, HN_LRO_LENLIM_MIN(ifp)); -#endif - /* * Suspend this interface before the synthetic parts * are ripped. @@ -1810,13 +1797,31 @@ hn_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) /* * Reattach the synthetic parts, i.e. NVS and RNDIS, * with the new MTU setting. - * XXX check error. */ - hn_synth_attach(sc, ifr->ifr_mtu); + error = hn_synth_attach(sc, ifr->ifr_mtu); + if (error) { + HN_UNLOCK(sc); + break; + } + + /* + * Commit the requested MTU, after the synthetic parts + * have been successfully attached. + */ + ifp->if_mtu = ifr->ifr_mtu; + /* + * Make sure that various parameters based on MTU are + * still valid, after the MTU change. + */ if (sc->hn_tx_ring[0].hn_chim_size > sc->hn_chim_szmax) hn_set_chim_size(sc, sc->hn_chim_szmax); - hn_set_tso_maxsize(sc, hn_tso_maxlen, ifr->ifr_mtu); + hn_set_tso_maxsize(sc, hn_tso_maxlen, ifp->if_mtu); +#if __FreeBSD_version >= 1100099 + if (sc->hn_rx_ring[0].hn_lro.lro_length_lim < + HN_LRO_LENLIM_MIN(ifp)) + hn_set_lro_lenlim(sc, HN_LRO_LENLIM_MIN(ifp)); +#endif /* * All done! Resume the interface now. |