diff options
| author | Kirill Ponomarev <krion@FreeBSD.org> | 2019-07-24 16:10:20 +0000 |
|---|---|---|
| committer | Kirill Ponomarev <krion@FreeBSD.org> | 2019-07-24 16:10:20 +0000 |
| commit | b7592822d5de2fd3907d5c4dd027beef5ec4958c (patch) | |
| tree | 84028399f9f3c0255191d979994b540702e719f1 | |
| parent | e020a35f5b9b59f4017ea994ebff63c3217c9aca (diff) | |
Allow set MTU more than 1500 bytes.
Submitted by: Alexandr Fedorov <aleksandr.fedorov_itglobal_dot_com>
Approved by: jhb, rgrimes
Sponsored by: ITGlobal.com
Differential Revision: https://reviews.freebsd.org/D19422
Notes
svn path=/head/; revision=350293
| -rw-r--r-- | sys/net/if_vxlan.c | 23 |
1 files changed, 20 insertions, 3 deletions
diff --git a/sys/net/if_vxlan.c b/sys/net/if_vxlan.c index 5e35baae2dbc..ac83ff183d74 100644 --- a/sys/net/if_vxlan.c +++ b/sys/net/if_vxlan.c @@ -84,6 +84,15 @@ struct vxlan_socket_mc_info { int vxlsomc_users; }; +/* + * The maximum MTU of encapsulated ethernet frame within IPv4/UDP packet. + */ +#define VXLAN_MAX_MTU (IP_MAXPACKET - \ + 60 /* Maximum IPv4 header len */ - \ + sizeof(struct udphdr) - \ + sizeof(struct vxlan_header) - \ + ETHER_HDR_LEN - ETHER_CRC_LEN - ETHER_VLAN_ENCAP_LEN) + #define VXLAN_SO_MC_MAX_GROUPS 32 #define VXLAN_SO_VNI_HASH_SHIFT 6 @@ -2247,10 +2256,11 @@ vxlan_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) ifr = (struct ifreq *) data; ifd = (struct ifdrv *) data; + error = 0; + switch (cmd) { case SIOCADDMULTI: case SIOCDELMULTI: - error = 0; break; case SIOCGDRVSPEC: @@ -2267,6 +2277,13 @@ vxlan_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) error = ifmedia_ioctl(ifp, ifr, &sc->vxl_media, cmd); break; + case SIOCSIFMTU: + if (ifr->ifr_mtu < ETHERMIN || ifr->ifr_mtu > VXLAN_MAX_MTU) + error = EINVAL; + else + ifp->if_mtu = ifr->ifr_mtu; + break; + default: error = ether_ioctl(ifp, cmd, data); break; @@ -2747,8 +2764,8 @@ vxlan_clone_create(struct if_clone *ifc, int unit, caddr_t params) ifp->if_ioctl = vxlan_ioctl; ifp->if_transmit = vxlan_transmit; ifp->if_qflush = vxlan_qflush; - ifp->if_capabilities |= IFCAP_LINKSTATE; - ifp->if_capenable |= IFCAP_LINKSTATE; + ifp->if_capabilities |= IFCAP_LINKSTATE | IFCAP_JUMBO_MTU; + ifp->if_capenable |= IFCAP_LINKSTATE | IFCAP_JUMBO_MTU; ifmedia_init(&sc->vxl_media, 0, vxlan_media_change, vxlan_media_status); ifmedia_add(&sc->vxl_media, IFM_ETHER | IFM_AUTO, 0, NULL); |