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https://git.FreeBSD.org/src.git
synced 2024-12-25 11:37:56 +00:00
a163d034fa
Approved by: trb
778 lines
20 KiB
C
778 lines
20 KiB
C
/*
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* Copyright 1998 Massachusetts Institute of Technology
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*
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* Permission to use, copy, modify, and distribute this software and
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* its documentation for any purpose and without fee is hereby
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* granted, provided that both the above copyright notice and this
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* permission notice appear in all copies, that both the above
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* copyright notice and this permission notice appear in all
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* supporting documentation, and that the name of M.I.T. not be used
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* in advertising or publicity pertaining to distribution of the
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* software without specific, written prior permission. M.I.T. makes
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* no representations about the suitability of this software for any
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* purpose. It is provided "as is" without express or implied
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* warranty.
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*
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* THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''. M.I.T. DISCLAIMS
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* ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT
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* SHALL M.I.T. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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/*
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* if_vlan.c - pseudo-device driver for IEEE 802.1Q virtual LANs.
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* Might be extended some day to also handle IEEE 802.1p priority
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* tagging. This is sort of sneaky in the implementation, since
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* we need to pretend to be enough of an Ethernet implementation
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* to make arp work. The way we do this is by telling everyone
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* that we are an Ethernet, and then catch the packets that
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* ether_output() left on our output queue when it calls
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* if_start(), rewrite them for use by the real outgoing interface,
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* and ask it to send them.
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*/
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#include "opt_inet.h"
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/mbuf.h>
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#include <sys/module.h>
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#include <sys/queue.h>
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#include <sys/socket.h>
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#include <sys/sockio.h>
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#include <sys/sysctl.h>
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#include <sys/systm.h>
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#include <net/bpf.h>
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#include <net/ethernet.h>
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#include <net/if.h>
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#include <net/if_arp.h>
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#include <net/if_dl.h>
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#include <net/if_types.h>
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#include <net/if_vlan_var.h>
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#ifdef INET
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#include <netinet/in.h>
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#include <netinet/if_ether.h>
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#endif
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#define VLANNAME "vlan"
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struct vlan_mc_entry {
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struct ether_addr mc_addr;
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SLIST_ENTRY(vlan_mc_entry) mc_entries;
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};
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struct ifvlan {
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struct arpcom ifv_ac; /* make this an interface */
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struct ifnet *ifv_p; /* parent inteface of this vlan */
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struct ifv_linkmib {
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int ifvm_parent;
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int ifvm_encaplen; /* encapsulation length */
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int ifvm_mtufudge; /* MTU fudged by this much */
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int ifvm_mintu; /* min transmission unit */
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u_int16_t ifvm_proto; /* encapsulation ethertype */
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u_int16_t ifvm_tag; /* tag to apply on packets leaving if */
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} ifv_mib;
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SLIST_HEAD(__vlan_mchead, vlan_mc_entry) vlan_mc_listhead;
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LIST_ENTRY(ifvlan) ifv_list;
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int ifv_flags;
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};
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#define ifv_if ifv_ac.ac_if
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#define ifv_tag ifv_mib.ifvm_tag
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#define ifv_encaplen ifv_mib.ifvm_encaplen
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#define ifv_mtufudge ifv_mib.ifvm_mtufudge
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#define ifv_mintu ifv_mib.ifvm_mintu
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#define IFVF_PROMISC 0x01 /* promiscuous mode enabled */
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SYSCTL_DECL(_net_link);
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SYSCTL_NODE(_net_link, IFT_L2VLAN, vlan, CTLFLAG_RW, 0, "IEEE 802.1Q VLAN");
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SYSCTL_NODE(_net_link_vlan, PF_LINK, link, CTLFLAG_RW, 0, "for consistency");
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static MALLOC_DEFINE(M_VLAN, "vlan", "802.1Q Virtual LAN Interface");
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static LIST_HEAD(, ifvlan) ifv_list;
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static int vlan_clone_create(struct if_clone *, int);
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static void vlan_clone_destroy(struct ifnet *);
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static void vlan_start(struct ifnet *ifp);
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static void vlan_ifinit(void *foo);
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static void vlan_input(struct ifnet *ifp, struct mbuf *m);
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static int vlan_ioctl(struct ifnet *ifp, u_long cmd, caddr_t addr);
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static int vlan_setmulti(struct ifnet *ifp);
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static int vlan_unconfig(struct ifnet *ifp);
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static int vlan_config(struct ifvlan *ifv, struct ifnet *p);
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struct if_clone vlan_cloner = IF_CLONE_INITIALIZER("vlan",
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vlan_clone_create, vlan_clone_destroy, 0, IF_MAXUNIT);
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/*
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* Program our multicast filter. What we're actually doing is
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* programming the multicast filter of the parent. This has the
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* side effect of causing the parent interface to receive multicast
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* traffic that it doesn't really want, which ends up being discarded
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* later by the upper protocol layers. Unfortunately, there's no way
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* to avoid this: there really is only one physical interface.
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*/
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static int
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vlan_setmulti(struct ifnet *ifp)
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{
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struct ifnet *ifp_p;
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struct ifmultiaddr *ifma, *rifma = NULL;
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struct ifvlan *sc;
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struct vlan_mc_entry *mc = NULL;
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struct sockaddr_dl sdl;
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int error;
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/* Find the parent. */
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sc = ifp->if_softc;
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ifp_p = sc->ifv_p;
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/*
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* If we don't have a parent, just remember the membership for
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* when we do.
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*/
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if (ifp_p == NULL)
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return(0);
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bzero((char *)&sdl, sizeof sdl);
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sdl.sdl_len = sizeof sdl;
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sdl.sdl_family = AF_LINK;
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sdl.sdl_index = ifp_p->if_index;
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sdl.sdl_type = IFT_ETHER;
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sdl.sdl_alen = ETHER_ADDR_LEN;
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/* First, remove any existing filter entries. */
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while(SLIST_FIRST(&sc->vlan_mc_listhead) != NULL) {
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mc = SLIST_FIRST(&sc->vlan_mc_listhead);
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bcopy((char *)&mc->mc_addr, LLADDR(&sdl), ETHER_ADDR_LEN);
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error = if_delmulti(ifp_p, (struct sockaddr *)&sdl);
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if (error)
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return(error);
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SLIST_REMOVE_HEAD(&sc->vlan_mc_listhead, mc_entries);
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free(mc, M_VLAN);
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}
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/* Now program new ones. */
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TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
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if (ifma->ifma_addr->sa_family != AF_LINK)
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continue;
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mc = malloc(sizeof(struct vlan_mc_entry), M_VLAN, M_WAITOK);
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bcopy(LLADDR((struct sockaddr_dl *)ifma->ifma_addr),
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(char *)&mc->mc_addr, ETHER_ADDR_LEN);
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SLIST_INSERT_HEAD(&sc->vlan_mc_listhead, mc, mc_entries);
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bcopy(LLADDR((struct sockaddr_dl *)ifma->ifma_addr),
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LLADDR(&sdl), ETHER_ADDR_LEN);
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error = if_addmulti(ifp_p, (struct sockaddr *)&sdl, &rifma);
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if (error)
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return(error);
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}
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return(0);
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}
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/*
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* VLAN support can be loaded as a module. The only place in the
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* system that's intimately aware of this is ether_input. We hook
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* into this code through vlan_input_p which is defined there and
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* set here. Noone else in the system should be aware of this so
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* we use an explicit reference here.
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*
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* NB: Noone should ever need to check if vlan_input_p is null or
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* not. This is because interfaces have a count of the number
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* of active vlans (if_nvlans) and this should never be bumped
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* except by vlan_config--which is in this module so therefore
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* the module must be loaded and vlan_input_p must be non-NULL.
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*/
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extern void (*vlan_input_p)(struct ifnet *, struct mbuf *);
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static int
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vlan_modevent(module_t mod, int type, void *data)
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{
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switch (type) {
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case MOD_LOAD:
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LIST_INIT(&ifv_list);
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vlan_input_p = vlan_input;
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if_clone_attach(&vlan_cloner);
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break;
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case MOD_UNLOAD:
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if_clone_detach(&vlan_cloner);
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vlan_input_p = NULL;
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while (!LIST_EMPTY(&ifv_list))
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vlan_clone_destroy(&LIST_FIRST(&ifv_list)->ifv_if);
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break;
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}
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return 0;
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}
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static moduledata_t vlan_mod = {
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"if_vlan",
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vlan_modevent,
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0
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};
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DECLARE_MODULE(if_vlan, vlan_mod, SI_SUB_PSEUDO, SI_ORDER_ANY);
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static int
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vlan_clone_create(struct if_clone *ifc, int unit)
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{
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struct ifvlan *ifv;
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struct ifnet *ifp;
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int s;
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ifv = malloc(sizeof(struct ifvlan), M_VLAN, M_WAITOK | M_ZERO);
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ifp = &ifv->ifv_if;
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SLIST_INIT(&ifv->vlan_mc_listhead);
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s = splnet();
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LIST_INSERT_HEAD(&ifv_list, ifv, ifv_list);
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splx(s);
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ifp->if_softc = ifv;
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ifp->if_name = "vlan";
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ifp->if_unit = unit;
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/* NB: flags are not set here */
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ifp->if_linkmib = &ifv->ifv_mib;
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ifp->if_linkmiblen = sizeof ifv->ifv_mib;
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/* NB: mtu is not set here */
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ifp->if_init = vlan_ifinit;
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ifp->if_start = vlan_start;
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ifp->if_ioctl = vlan_ioctl;
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ifp->if_snd.ifq_maxlen = ifqmaxlen;
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ether_ifattach(ifp, ifv->ifv_ac.ac_enaddr);
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/* Now undo some of the damage... */
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ifp->if_baudrate = 0;
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ifp->if_type = IFT_L2VLAN;
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ifp->if_hdrlen = ETHER_VLAN_ENCAP_LEN;
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return (0);
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}
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static void
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vlan_clone_destroy(struct ifnet *ifp)
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{
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struct ifvlan *ifv = ifp->if_softc;
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int s;
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s = splnet();
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LIST_REMOVE(ifv, ifv_list);
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vlan_unconfig(ifp);
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splx(s);
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ether_ifdetach(ifp);
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free(ifv, M_VLAN);
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}
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static void
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vlan_ifinit(void *foo)
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{
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return;
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}
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static void
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vlan_start(struct ifnet *ifp)
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{
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struct ifvlan *ifv;
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struct ifnet *p;
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struct ether_vlan_header *evl;
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struct mbuf *m;
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ifv = ifp->if_softc;
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p = ifv->ifv_p;
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ifp->if_flags |= IFF_OACTIVE;
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for (;;) {
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IF_DEQUEUE(&ifp->if_snd, m);
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if (m == 0)
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break;
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BPF_MTAP(ifp, m);
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/*
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* Do not run parent's if_start() if the parent is not up,
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* or parent's driver will cause a system crash.
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*/
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if ((p->if_flags & (IFF_UP | IFF_RUNNING)) !=
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(IFF_UP | IFF_RUNNING)) {
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m_freem(m);
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ifp->if_collisions++;
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continue;
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}
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/*
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* If underlying interface can do VLAN tag insertion itself,
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* just pass the packet along. However, we need some way to
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* tell the interface where the packet came from so that it
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* knows how to find the VLAN tag to use, so we attach a
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* packet tag that holds it.
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*/
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if (ifp->if_capabilities & IFCAP_VLAN_HWTAGGING) {
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struct m_tag *mtag = m_tag_alloc(MTAG_VLAN,
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MTAG_VLAN_TAG,
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sizeof (u_int),
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M_DONTWAIT);
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if (mtag == NULL) {
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ifp->if_oerrors++;
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m_freem(m);
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continue;
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}
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*(u_int*)(mtag+1) = ifv->ifv_tag;
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m_tag_prepend(m, mtag);
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} else {
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M_PREPEND(m, ifv->ifv_encaplen, M_DONTWAIT);
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if (m == NULL) {
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if_printf(ifp, "unable to prepend VLAN header");
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ifp->if_ierrors++;
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continue;
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}
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/* M_PREPEND takes care of m_len, m_pkthdr.len for us */
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if (m->m_len < sizeof(*evl)) {
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m = m_pullup(m, sizeof(*evl));
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if (m == NULL) {
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if_printf(ifp,
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"cannot pullup VLAN header");
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ifp->if_ierrors++;
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continue;
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}
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}
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/*
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* Transform the Ethernet header into an Ethernet header
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* with 802.1Q encapsulation.
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*/
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bcopy(mtod(m, char *) + ifv->ifv_encaplen,
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mtod(m, char *), sizeof(struct ether_header));
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evl = mtod(m, struct ether_vlan_header *);
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evl->evl_proto = evl->evl_encap_proto;
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evl->evl_encap_proto = htons(ETHERTYPE_VLAN);
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evl->evl_tag = htons(ifv->ifv_tag);
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#ifdef DEBUG
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printf("vlan_start: %*D\n", (int)sizeof *evl,
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(unsigned char *)evl, ":");
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#endif
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}
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/*
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* Send it, precisely as ether_output() would have.
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* We are already running at splimp.
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*/
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if (IF_HANDOFF(&p->if_snd, m, p))
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ifp->if_opackets++;
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else
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ifp->if_oerrors++;
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}
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ifp->if_flags &= ~IFF_OACTIVE;
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return;
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}
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static void
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vlan_input(struct ifnet *ifp, struct mbuf *m)
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{
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struct ether_vlan_header *evl;
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struct ifvlan *ifv;
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struct m_tag *mtag;
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u_int tag;
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mtag = m_tag_locate(m, MTAG_VLAN, MTAG_VLAN_TAG, NULL);
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if (mtag != NULL) {
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/*
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* Packet is tagged, m contains a normal
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* Ethernet frame; the tag is stored out-of-band.
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*/
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tag = *(u_int*)(mtag+1);
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m_tag_delete(m, mtag);
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} else {
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switch (ifp->if_type) {
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case IFT_ETHER:
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if (m->m_len < sizeof (*evl) &&
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(m = m_pullup(m, sizeof (*evl))) == NULL) {
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if_printf(ifp, "cannot pullup VLAN header\n");
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return;
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}
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evl = mtod(m, struct ether_vlan_header *);
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KASSERT(ntohs(evl->evl_encap_proto) == ETHERTYPE_VLAN,
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("vlan_input: bad encapsulated protocols (%u)",
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ntohs(evl->evl_encap_proto)));
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tag = EVL_VLANOFTAG(ntohs(evl->evl_tag));
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/*
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* Restore the original ethertype. We'll remove
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* the encapsulation after we've found the vlan
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* interface corresponding to the tag.
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*/
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evl->evl_encap_proto = evl->evl_proto;
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break;
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default:
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tag = (u_int) -1;
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#ifdef DIAGNOSTIC
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panic("vlan_input: unsupported if type %u", ifp->if_type);
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#endif
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break;
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}
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}
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for (ifv = LIST_FIRST(&ifv_list); ifv != NULL;
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ifv = LIST_NEXT(ifv, ifv_list))
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if (ifp == ifv->ifv_p && tag == ifv->ifv_tag)
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break;
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if (ifv == NULL || (ifv->ifv_if.if_flags & IFF_UP) == 0) {
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m_freem(m);
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ifp->if_noproto++;
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return;
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}
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if (mtag == NULL) {
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/*
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* Packet had an in-line encapsulation header;
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* remove it. The original header has already
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* been fixed up above.
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*/
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bcopy(mtod(m, caddr_t),
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mtod(m, caddr_t) + ETHER_VLAN_ENCAP_LEN,
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sizeof (struct ether_header));
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m_adj(m, ETHER_VLAN_ENCAP_LEN);
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}
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m->m_pkthdr.rcvif = &ifv->ifv_if;
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ifv->ifv_if.if_ipackets++;
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/* Pass it back through the parent's input routine. */
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(*ifp->if_input)(&ifv->ifv_if, m);
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}
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static int
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vlan_config(struct ifvlan *ifv, struct ifnet *p)
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{
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struct ifaddr *ifa1, *ifa2;
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struct sockaddr_dl *sdl1, *sdl2;
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if (p->if_data.ifi_type != IFT_ETHER)
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return EPROTONOSUPPORT;
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if (ifv->ifv_p)
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return EBUSY;
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ifv->ifv_encaplen = ETHER_VLAN_ENCAP_LEN;
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ifv->ifv_mintu = ETHERMIN;
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ifv->ifv_flags = 0;
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/*
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* If the parent supports the VLAN_MTU capability,
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* i.e. can Tx/Rx larger than ETHER_MAX_LEN frames,
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* enable it.
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*/
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p->if_nvlans++;
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if (p->if_nvlans == 1 && (p->if_capabilities & IFCAP_VLAN_MTU) != 0) {
|
|
/*
|
|
* Enable Tx/Rx of VLAN-sized frames.
|
|
*/
|
|
p->if_capenable |= IFCAP_VLAN_MTU;
|
|
if (p->if_flags & IFF_UP) {
|
|
struct ifreq ifr;
|
|
int error;
|
|
|
|
ifr.ifr_flags = p->if_flags;
|
|
error = (*p->if_ioctl)(p, SIOCSIFFLAGS,
|
|
(caddr_t) &ifr);
|
|
if (error) {
|
|
p->if_nvlans--;
|
|
if (p->if_nvlans == 0)
|
|
p->if_capenable &= ~IFCAP_VLAN_MTU;
|
|
return (error);
|
|
}
|
|
}
|
|
ifv->ifv_mtufudge = 0;
|
|
} else if ((p->if_capabilities & IFCAP_VLAN_MTU) == 0) {
|
|
/*
|
|
* Fudge the MTU by the encapsulation size. This
|
|
* makes us incompatible with strictly compliant
|
|
* 802.1Q implementations, but allows us to use
|
|
* the feature with other NetBSD implementations,
|
|
* which might still be useful.
|
|
*/
|
|
ifv->ifv_mtufudge = ifv->ifv_encaplen;
|
|
}
|
|
|
|
ifv->ifv_p = p;
|
|
ifv->ifv_if.if_mtu = p->if_mtu - ifv->ifv_mtufudge;
|
|
/*
|
|
* Copy only a selected subset of flags from the parent.
|
|
* Other flags are none of our business.
|
|
*/
|
|
ifv->ifv_if.if_flags = (p->if_flags &
|
|
(IFF_BROADCAST | IFF_MULTICAST | IFF_SIMPLEX | IFF_POINTOPOINT));
|
|
|
|
/*
|
|
* If the parent interface can do hardware-assisted
|
|
* VLAN encapsulation, then propagate its hardware-
|
|
* assisted checksumming flags.
|
|
*/
|
|
if (p->if_capabilities & IFCAP_VLAN_HWTAGGING)
|
|
ifv->ifv_if.if_capabilities |= p->if_capabilities & IFCAP_HWCSUM;
|
|
|
|
/*
|
|
* Set up our ``Ethernet address'' to reflect the underlying
|
|
* physical interface's.
|
|
*/
|
|
ifa1 = ifaddr_byindex(ifv->ifv_if.if_index);
|
|
ifa2 = ifaddr_byindex(p->if_index);
|
|
sdl1 = (struct sockaddr_dl *)ifa1->ifa_addr;
|
|
sdl2 = (struct sockaddr_dl *)ifa2->ifa_addr;
|
|
sdl1->sdl_type = IFT_ETHER;
|
|
sdl1->sdl_alen = ETHER_ADDR_LEN;
|
|
bcopy(LLADDR(sdl2), LLADDR(sdl1), ETHER_ADDR_LEN);
|
|
bcopy(LLADDR(sdl2), ifv->ifv_ac.ac_enaddr, ETHER_ADDR_LEN);
|
|
|
|
/*
|
|
* Configure multicast addresses that may already be
|
|
* joined on the vlan device.
|
|
*/
|
|
(void)vlan_setmulti(&ifv->ifv_if);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
vlan_unconfig(struct ifnet *ifp)
|
|
{
|
|
struct ifaddr *ifa;
|
|
struct sockaddr_dl *sdl;
|
|
struct vlan_mc_entry *mc;
|
|
struct ifvlan *ifv;
|
|
struct ifnet *p;
|
|
int error;
|
|
|
|
ifv = ifp->if_softc;
|
|
p = ifv->ifv_p;
|
|
|
|
if (p) {
|
|
struct sockaddr_dl sdl;
|
|
|
|
/*
|
|
* Since the interface is being unconfigured, we need to
|
|
* empty the list of multicast groups that we may have joined
|
|
* while we were alive from the parent's list.
|
|
*/
|
|
bzero((char *)&sdl, sizeof sdl);
|
|
sdl.sdl_len = sizeof sdl;
|
|
sdl.sdl_family = AF_LINK;
|
|
sdl.sdl_index = p->if_index;
|
|
sdl.sdl_type = IFT_ETHER;
|
|
sdl.sdl_alen = ETHER_ADDR_LEN;
|
|
|
|
while(SLIST_FIRST(&ifv->vlan_mc_listhead) != NULL) {
|
|
mc = SLIST_FIRST(&ifv->vlan_mc_listhead);
|
|
bcopy((char *)&mc->mc_addr, LLADDR(&sdl), ETHER_ADDR_LEN);
|
|
error = if_delmulti(p, (struct sockaddr *)&sdl);
|
|
if (error)
|
|
return(error);
|
|
SLIST_REMOVE_HEAD(&ifv->vlan_mc_listhead, mc_entries);
|
|
free(mc, M_VLAN);
|
|
}
|
|
|
|
p->if_nvlans--;
|
|
if (p->if_nvlans == 0) {
|
|
/*
|
|
* Disable Tx/Rx of VLAN-sized frames.
|
|
*/
|
|
p->if_capenable &= ~IFCAP_VLAN_MTU;
|
|
if (p->if_flags & IFF_UP) {
|
|
struct ifreq ifr;
|
|
|
|
ifr.ifr_flags = p->if_flags;
|
|
(*p->if_ioctl)(p, SIOCSIFFLAGS, (caddr_t) &ifr);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Disconnect from parent. */
|
|
ifv->ifv_p = NULL;
|
|
ifv->ifv_if.if_mtu = ETHERMTU; /* XXX why not 0? */
|
|
ifv->ifv_flags = 0;
|
|
|
|
/* Clear our MAC address. */
|
|
ifa = ifaddr_byindex(ifv->ifv_if.if_index);
|
|
sdl = (struct sockaddr_dl *)ifa->ifa_addr;
|
|
sdl->sdl_type = IFT_ETHER;
|
|
sdl->sdl_alen = ETHER_ADDR_LEN;
|
|
bzero(LLADDR(sdl), ETHER_ADDR_LEN);
|
|
bzero(ifv->ifv_ac.ac_enaddr, ETHER_ADDR_LEN);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
vlan_set_promisc(struct ifnet *ifp)
|
|
{
|
|
struct ifvlan *ifv = ifp->if_softc;
|
|
int error = 0;
|
|
|
|
if ((ifp->if_flags & IFF_PROMISC) != 0) {
|
|
if ((ifv->ifv_flags & IFVF_PROMISC) == 0) {
|
|
error = ifpromisc(ifv->ifv_p, 1);
|
|
if (error == 0)
|
|
ifv->ifv_flags |= IFVF_PROMISC;
|
|
}
|
|
} else {
|
|
if ((ifv->ifv_flags & IFVF_PROMISC) != 0) {
|
|
error = ifpromisc(ifv->ifv_p, 0);
|
|
if (error == 0)
|
|
ifv->ifv_flags &= ~IFVF_PROMISC;
|
|
}
|
|
}
|
|
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
vlan_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
|
|
{
|
|
struct ifaddr *ifa;
|
|
struct ifnet *p;
|
|
struct ifreq *ifr;
|
|
struct ifvlan *ifv;
|
|
struct vlanreq vlr;
|
|
int error = 0;
|
|
|
|
ifr = (struct ifreq *)data;
|
|
ifa = (struct ifaddr *)data;
|
|
ifv = ifp->if_softc;
|
|
|
|
switch (cmd) {
|
|
case SIOCSIFADDR:
|
|
ifp->if_flags |= IFF_UP;
|
|
|
|
switch (ifa->ifa_addr->sa_family) {
|
|
#ifdef INET
|
|
case AF_INET:
|
|
arp_ifinit(&ifv->ifv_if, ifa);
|
|
break;
|
|
#endif
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case SIOCGIFADDR:
|
|
{
|
|
struct sockaddr *sa;
|
|
|
|
sa = (struct sockaddr *) &ifr->ifr_data;
|
|
bcopy(((struct arpcom *)ifp->if_softc)->ac_enaddr,
|
|
(caddr_t) sa->sa_data, ETHER_ADDR_LEN);
|
|
}
|
|
break;
|
|
|
|
case SIOCGIFMEDIA:
|
|
if (ifv->ifv_p != NULL) {
|
|
error = (ifv->ifv_p->if_ioctl)(ifv->ifv_p, SIOCGIFMEDIA, data);
|
|
/* Limit the result to the parent's current config. */
|
|
if (error == 0) {
|
|
struct ifmediareq *ifmr;
|
|
|
|
ifmr = (struct ifmediareq *) data;
|
|
if (ifmr->ifm_count >= 1 && ifmr->ifm_ulist) {
|
|
ifmr->ifm_count = 1;
|
|
error = copyout(&ifmr->ifm_current,
|
|
ifmr->ifm_ulist,
|
|
sizeof(int));
|
|
}
|
|
}
|
|
} else
|
|
error = EINVAL;
|
|
break;
|
|
|
|
case SIOCSIFMEDIA:
|
|
error = EINVAL;
|
|
break;
|
|
|
|
case SIOCSIFMTU:
|
|
/*
|
|
* Set the interface MTU.
|
|
*/
|
|
if (ifv->ifv_p != NULL) {
|
|
if (ifr->ifr_mtu >
|
|
(ifv->ifv_p->if_mtu - ifv->ifv_mtufudge) ||
|
|
ifr->ifr_mtu <
|
|
(ifv->ifv_mintu - ifv->ifv_mtufudge))
|
|
error = EINVAL;
|
|
else
|
|
ifp->if_mtu = ifr->ifr_mtu;
|
|
} else
|
|
error = EINVAL;
|
|
break;
|
|
|
|
case SIOCSETVLAN:
|
|
error = copyin(ifr->ifr_data, &vlr, sizeof vlr);
|
|
if (error)
|
|
break;
|
|
if (vlr.vlr_parent[0] == '\0') {
|
|
vlan_unconfig(ifp);
|
|
if (ifp->if_flags & IFF_UP) {
|
|
int s = splimp();
|
|
if_down(ifp);
|
|
splx(s);
|
|
}
|
|
ifp->if_flags &= ~IFF_RUNNING;
|
|
break;
|
|
}
|
|
p = ifunit(vlr.vlr_parent);
|
|
if (p == 0) {
|
|
error = ENOENT;
|
|
break;
|
|
}
|
|
error = vlan_config(ifv, p);
|
|
if (error)
|
|
break;
|
|
ifv->ifv_tag = vlr.vlr_tag;
|
|
ifp->if_flags |= IFF_RUNNING;
|
|
|
|
/* Update promiscuous mode, if necessary. */
|
|
vlan_set_promisc(ifp);
|
|
break;
|
|
|
|
case SIOCGETVLAN:
|
|
bzero(&vlr, sizeof vlr);
|
|
if (ifv->ifv_p) {
|
|
snprintf(vlr.vlr_parent, sizeof(vlr.vlr_parent),
|
|
"%s%d", ifv->ifv_p->if_name, ifv->ifv_p->if_unit);
|
|
vlr.vlr_tag = ifv->ifv_tag;
|
|
}
|
|
error = copyout(&vlr, ifr->ifr_data, sizeof vlr);
|
|
break;
|
|
|
|
case SIOCSIFFLAGS:
|
|
/*
|
|
* For promiscuous mode, we enable promiscuous mode on
|
|
* the parent if we need promiscuous on the VLAN interface.
|
|
*/
|
|
if (ifv->ifv_p != NULL)
|
|
error = vlan_set_promisc(ifp);
|
|
break;
|
|
|
|
case SIOCADDMULTI:
|
|
case SIOCDELMULTI:
|
|
error = vlan_setmulti(ifp);
|
|
break;
|
|
default:
|
|
error = EINVAL;
|
|
}
|
|
return error;
|
|
}
|