diff options
Diffstat (limited to 'sys/net/if_epair.c')
| -rw-r--r-- | sys/net/if_epair.c | 62 |
1 files changed, 59 insertions, 3 deletions
diff --git a/sys/net/if_epair.c b/sys/net/if_epair.c index a213a84e17db..fbffa8f359a0 100644 --- a/sys/net/if_epair.c +++ b/sys/net/if_epair.c @@ -67,9 +67,9 @@ #include <net/if_var.h> #include <net/if_clone.h> #include <net/if_media.h> -#include <net/if_var.h> #include <net/if_private.h> #include <net/if_types.h> +#include <net/if_vlan_var.h> #include <net/netisr.h> #ifdef RSS #include <net/rss_config.h> @@ -435,6 +435,21 @@ epair_media_status(struct ifnet *ifp __unused, struct ifmediareq *imr) imr->ifm_active = IFM_ETHER | IFM_10G_T | IFM_FDX; } +/* + * Update ifp->if_hwassist according to the current value of ifp->if_capenable. + */ +static void +epair_caps_changed(struct ifnet *ifp) +{ + uint64_t hwassist = 0; + + if (ifp->if_capenable & IFCAP_TXCSUM) + hwassist |= CSUM_IP_TCP | CSUM_IP_UDP; + if (ifp->if_capenable & IFCAP_TXCSUM_IPV6) + hwassist |= CSUM_IP6_TCP | CSUM_IP6_UDP; + ifp->if_hwassist = hwassist; +} + static int epair_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) { @@ -462,6 +477,44 @@ epair_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) error = 0; break; + case SIOCGIFCAP: + ifr->ifr_reqcap = ifp->if_capabilities; + ifr->ifr_curcap = ifp->if_capenable; + error = 0; + break; + case SIOCSIFCAP: + /* + * Enable/disable capabilities as requested, besides + * IFCAP_RXCSUM(_IPV6), which always remain enabled. + * Incoming packets may have the mbuf flag CSUM_DATA_VALID set. + * Without IFCAP_RXCSUM(_IPV6), this flag would have to be + * removed, which does not seem helpful. + */ + ifp->if_capenable = ifr->ifr_reqcap | IFCAP_RXCSUM | + IFCAP_RXCSUM_IPV6; + epair_caps_changed(ifp); + /* + * If IFCAP_TXCSUM(_IPV6) has been changed, change it on the + * other epair interface as well. + * A bridge disables IFCAP_TXCSUM(_IPV6) when adding one epair + * interface if another interface in the bridge has it disabled. + * In that case this capability needs to be disabled on the + * other epair interface to avoid sending packets in the bridge + * that rely on this capability. + */ + sc = ifp->if_softc; + if ((ifp->if_capenable ^ sc->oifp->if_capenable) & + (IFCAP_TXCSUM | IFCAP_TXCSUM_IPV6)) { + sc->oifp->if_capenable &= + ~(IFCAP_TXCSUM | IFCAP_TXCSUM_IPV6); + sc->oifp->if_capenable |= ifp->if_capenable & + (IFCAP_TXCSUM | IFCAP_TXCSUM_IPV6); + epair_caps_changed(sc->oifp); + } + VLAN_CAPABILITIES(ifp); + error = 0; + break; + default: /* Let the common ethernet handler process this. */ error = ether_ioctl(ifp, cmd, data); @@ -573,8 +626,11 @@ epair_setup_ifp(struct epair_softc *sc, char *name, int unit) ifp->if_dname = epairname; ifp->if_dunit = unit; ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; - ifp->if_capabilities = IFCAP_VLAN_MTU; - ifp->if_capenable = IFCAP_VLAN_MTU; + ifp->if_capabilities = IFCAP_VLAN_MTU | IFCAP_TXCSUM | + IFCAP_TXCSUM_IPV6 | IFCAP_RXCSUM | IFCAP_RXCSUM_IPV6; + ifp->if_capenable = IFCAP_VLAN_MTU | IFCAP_TXCSUM | + IFCAP_TXCSUM_IPV6 | IFCAP_RXCSUM | IFCAP_RXCSUM_IPV6; + epair_caps_changed(ifp); ifp->if_transmit = epair_transmit; ifp->if_qflush = epair_qflush; ifp->if_start = epair_start; |