diff options
Diffstat (limited to 'sys/net/if_clone.c')
| -rw-r--r-- | sys/net/if_clone.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/sys/net/if_clone.c b/sys/net/if_clone.c index 09f8d2a613bf..dc71bfc04f1e 100644 --- a/sys/net/if_clone.c +++ b/sys/net/if_clone.c @@ -518,6 +518,49 @@ done: } /* + * if_clone_findifc() looks up ifnet from the current + * cloner list, and returns ifc if found. Note that ifc_refcnt + * is incremented. + */ +struct if_clone * +if_clone_findifc(struct ifnet *ifp) +{ + struct if_clone *ifc, *ifc0; + struct ifnet *ifcifp; + + ifc0 = NULL; + IF_CLONERS_LOCK(); + LIST_FOREACH(ifc, &V_if_cloners, ifc_list) { + IF_CLONE_LOCK(ifc); + LIST_FOREACH(ifcifp, &ifc->ifc_iflist, if_clones) { + if (ifp == ifcifp) { + ifc0 = ifc; + IF_CLONE_ADDREF_LOCKED(ifc); + break; + } + } + IF_CLONE_UNLOCK(ifc); + if (ifc0 != NULL) + break; + } + IF_CLONERS_UNLOCK(); + + return (ifc0); +} + +/* + * if_clone_addgroup() decrements ifc_refcnt because it is called after + * if_clone_findifc(). + */ +void +if_clone_addgroup(struct ifnet *ifp, struct if_clone *ifc) +{ + + if_addgroup(ifp, ifc->ifc_name); + IF_CLONE_REMREF(ifc); +} + +/* * A utility function to extract unit numbers from interface names of * the form name###. * |