diff options
Diffstat (limited to 'sys/netgraph/ng_eiface.c')
| -rw-r--r-- | sys/netgraph/ng_eiface.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/sys/netgraph/ng_eiface.c b/sys/netgraph/ng_eiface.c index 0f471bb..24a8daa 100644 --- a/sys/netgraph/ng_eiface.c +++ b/sys/netgraph/ng_eiface.c @@ -43,6 +43,7 @@ #include <net/if.h> #include <net/if_media.h> #include <net/if_types.h> +#include <net/if_dl.h> #include <net/netisr.h> #include <net/route.h> #include <net/vnet.h> @@ -66,6 +67,13 @@ static const struct ng_cmdlist ng_eiface_cmdlist[] = { }, { NGM_EIFACE_COOKIE, + NGM_EIFACE_SET_IFNAME, + "setifname", + &ng_parse_string_type, + NULL + }, + { + NGM_EIFACE_COOKIE, NGM_EIFACE_SET, "set", &ng_parse_enaddr_type, @@ -470,6 +478,11 @@ ng_eiface_rcvmsg(node_p node, item_p item, hook_p lasthook) struct ng_mesg *resp = NULL; int error = 0; struct ng_mesg *msg; + char *new_name; + size_t namelen, onamelen; + struct sockaddr_dl *sdl = NULL; + struct ifaddr *ifa = NULL; + node_p ethernode; NGI_GET_MSG(item, msg); switch (msg->header.typecookie) { @@ -496,6 +509,46 @@ ng_eiface_rcvmsg(node_p node, item_p item, hook_p lasthook) } strlcpy(resp->data, ifp->if_xname, IFNAMSIZ); break; + case NGM_EIFACE_SET_IFNAME: + new_name = (char *)msg->data; + + /* Deny request if interface is UP */ + if ((ifp->if_flags & IFF_UP) != 0) { + error = EBUSY; + break; + } + + EVENTHANDLER_INVOKE(ifnet_departure_event, ifp); + + ethernode = ng_name2noderef(node, ifp->if_xname); + if (ethernode != NULL) + ng_name_node(ethernode, new_name); + + strlcpy(ifp->if_xname, new_name, sizeof(ifp->if_xname)); + ifa = ifp->if_addr; + IFA_LOCK(ifa); + sdl = (struct sockaddr_dl *)ifa->ifa_addr; + namelen = strlen(new_name) + 1; + onamelen = sdl->sdl_nlen; + /* + * Move the address if needed. This is safe because we + * allocate space for a name of length IFNAMSIZ when we + * create this in if_attach(). + */ + if (namelen != onamelen) { + bcopy(sdl->sdl_data + onamelen, + sdl->sdl_data + namelen, sdl->sdl_alen); + } + bcopy(new_name, sdl->sdl_data, namelen); + sdl->sdl_nlen = namelen; + sdl = (struct sockaddr_dl *)ifa->ifa_netmask; + bzero(sdl->sdl_data, onamelen); + while (namelen != 0) + sdl->sdl_data[--namelen] = 0xff; + IFA_UNLOCK(ifa); + + EVENTHANDLER_INVOKE(ifnet_arrival_event, ifp); + break; case NGM_EIFACE_GET_IFADDRS: { |
