diff options
author | mux <mux@FreeBSD.org> | 2002-03-11 09:26:07 +0000 |
---|---|---|
committer | mux <mux@FreeBSD.org> | 2002-03-11 09:26:07 +0000 |
commit | 9a5e4c88a3c8f122fd226c41249210b7d9a95ab7 (patch) | |
tree | ead93d76aaa7a11f5c58953041c77a386e18fc64 /sys | |
parent | 352806ecf32064d3f84e690dc624e0a0aac0507b (diff) | |
download | FreeBSD-src-9a5e4c88a3c8f122fd226c41249210b7d9a95ab7.zip FreeBSD-src-9a5e4c88a3c8f122fd226c41249210b7d9a95ab7.tar.gz |
Simplify the interface cloning framework by handling unit
unit allocation with a bitmap in the generic layer. This
allows us to get rid of the duplicated rman code in every
clonable interface.
Reviewed by: brooks
Approved by: phk
Diffstat (limited to 'sys')
-rw-r--r-- | sys/net/if.c | 63 | ||||
-rw-r--r-- | sys/net/if.h | 10 | ||||
-rw-r--r-- | sys/net/if_faith.c | 54 | ||||
-rw-r--r-- | sys/net/if_gif.c | 51 | ||||
-rw-r--r-- | sys/net/if_gif.h | 1 | ||||
-rw-r--r-- | sys/net/if_loop.c | 64 | ||||
-rw-r--r-- | sys/net/if_stf.c | 52 | ||||
-rw-r--r-- | sys/net/if_vlan.c | 51 | ||||
-rw-r--r-- | sys/net/if_vlan_var.h | 1 |
9 files changed, 95 insertions, 252 deletions
diff --git a/sys/net/if.c b/sys/net/if.c index fe1f7f7..750b0f7 100644 --- a/sys/net/if.c +++ b/sys/net/if.c @@ -119,6 +119,7 @@ SYSINIT(interface_check, SI_SUB_PROTO_IF, SI_ORDER_FIRST, if_check, NULL) MALLOC_DEFINE(M_IFADDR, "ifaddr", "interface address"); MALLOC_DEFINE(M_IFMADDR, "ether_multi", "link-level multicast address"); +MALLOC_DEFINE(M_CLONE, "clone", "interface cloning framework"); #define CDEV_MAJOR 165 @@ -580,7 +581,7 @@ if_clone_create(name, len) { struct if_clone *ifc; char *dp; - int wildcard; + int wildcard, bytoff, bitoff; int unit; int err; @@ -591,12 +592,41 @@ if_clone_create(name, len) if (ifunit(name) != NULL) return (EEXIST); + bytoff = bitoff = 0; wildcard = (unit < 0); + /* + * Find a free unit if none was given. + */ + if (wildcard) { + while ((bytoff < ifc->ifc_bmlen) + && (ifc->ifc_units[bytoff] == 0xff)) + bytoff++; + if (bytoff >= ifc->ifc_bmlen) + return (ENOSPC); + while ((ifc->ifc_units[bytoff] & (1 << bitoff)) != 0) + bitoff++; + unit = (bytoff << 3) + bitoff; + } + + if (unit > ifc->ifc_maxunit) + return (ENXIO); - err = (*ifc->ifc_create)(ifc, &unit); + err = (*ifc->ifc_create)(ifc, unit); if (err != 0) return (err); + if (!wildcard) { + bytoff = unit >> 3; + bitoff = unit - (bytoff << 3); + } + + /* + * Allocate the unit in the bitmap. + */ + KASSERT((ifc->ifc_units[bytoff] & (1 << bitoff)) == 0, + ("%s: bit is already set", __func__)); + ifc->ifc_units[bytoff] |= (1 << bitoff); + /* In the wildcard case, we need to update the name. */ if (wildcard) { for (dp = name; *dp != '\0'; dp++); @@ -624,8 +654,10 @@ if_clone_destroy(name) { struct if_clone *ifc; struct ifnet *ifp; + int bytoff, bitoff; + int err, unit; - ifc = if_clone_lookup(name, NULL); + ifc = if_clone_lookup(name, &unit); if (ifc == NULL) return (EINVAL); @@ -636,7 +668,19 @@ if_clone_destroy(name) if (ifc->ifc_destroy == NULL) return (EOPNOTSUPP); - return ((*ifc->ifc_destroy)(ifp)); + err = (*ifc->ifc_destroy)(ifp); + if (err != 0) + return (err); + + /* + * Compute offset in the bitmap and deallocate the unit. + */ + bytoff = unit >> 3; + bitoff = unit - (bytoff << 3); + KASSERT((ifc->ifc_units[bytoff] & (1 << bitoff)) != 0, + ("%s: bit is already cleared", __func__)); + ifc->ifc_units[bytoff] &= ~(1 << bitoff); + return (0); } /* @@ -689,7 +733,17 @@ void if_clone_attach(ifc) struct if_clone *ifc; { + int len, maxclone; + /* + * Compute bitmap size and allocate it. + */ + maxclone = ifc->ifc_maxunit + 1; + len = maxclone >> 3; + if ((len << 3) < maxclone) + len++; + ifc->ifc_units = malloc(len, M_CLONE, M_WAITOK | M_ZERO); + ifc->ifc_bmlen = len; LIST_INSERT_HEAD(&if_cloners, ifc, ifc_list); if_cloners_count++; } @@ -703,6 +757,7 @@ if_clone_detach(ifc) { LIST_REMOVE(ifc, ifc_list); + free(ifc->ifc_units, M_CLONE); if_cloners_count--; } diff --git a/sys/net/if.h b/sys/net/if.h index 0b6b733..8790560 100644 --- a/sys/net/if.h +++ b/sys/net/if.h @@ -55,6 +55,7 @@ struct ifnet; */ #define IFNAMSIZ 16 #define IF_NAMESIZE IFNAMSIZ +#define IF_MAXUNIT 0x7fff /* ifp->if_unit is only 15 bits */ /* * Structure describing a `cloning' interface. @@ -63,13 +64,16 @@ struct if_clone { LIST_ENTRY(if_clone) ifc_list; /* on list of cloners */ const char *ifc_name; /* name of device, e.g. `gif' */ size_t ifc_namelen; /* length of name */ + int ifc_maxunit; /* maximum unit number */ + unsigned char *ifc_units; /* bitmap to handle units */ + int ifc_bmlen; /* bitmap length */ - int (*ifc_create)(struct if_clone *, int *); + int (*ifc_create)(struct if_clone *, int); int (*ifc_destroy)(struct ifnet *); }; -#define IF_CLONE_INITIALIZER(name, create, destroy) \ - { { 0 }, name, sizeof(name) - 1, create, destroy } +#define IF_CLONE_INITIALIZER(name, create, destroy, maxunit) \ + { { 0 }, name, sizeof(name) - 1, maxunit, NULL, 0, create, destroy } /* * Structure used to query names of interface cloners. diff --git a/sys/net/if_faith.c b/sys/net/if_faith.c index dc071eb..ee9a3a7 100644 --- a/sys/net/if_faith.c +++ b/sys/net/if_faith.c @@ -57,8 +57,6 @@ #include <sys/queue.h> #include <sys/types.h> #include <sys/malloc.h> -#include <machine/bus.h> /* XXX: Shouldn't really be required! */ -#include <sys/rman.h> #include <net/if.h> #include <net/if_types.h> @@ -85,11 +83,9 @@ #include <net/net_osdep.h> #define FAITHNAME "faith" -#define FAITH_MAXUNIT 0x7fff /* ifp->if_unit is only 15 bits */ struct faith_softc { struct ifnet sc_if; /* must be first */ - struct resource *r_unit; LIST_ENTRY(faith_softc) sc_list; }; @@ -104,14 +100,13 @@ static int faithprefix __P((struct in6_addr *)); static int faithmodevent __P((module_t, int, void *)); static MALLOC_DEFINE(M_FAITH, FAITHNAME, "Firewall Assisted Tunnel Interface"); -static struct rman faithunits[1]; static LIST_HEAD(, faith_softc) faith_softc_list; -int faith_clone_create __P((struct if_clone *, int *)); +int faith_clone_create __P((struct if_clone *, int)); int faith_clone_destroy __P((struct ifnet *)); -struct if_clone faith_cloner = - IF_CLONE_INITIALIZER(FAITHNAME, faith_clone_create, faith_clone_destroy); +struct if_clone faith_cloner = IF_CLONE_INITIALIZER(FAITHNAME, + faith_clone_create, faith_clone_destroy, IF_MAXUNIT); #define FAITHMTU 1500 @@ -121,22 +116,9 @@ faithmodevent(mod, type, data) int type; void *data; { - int err; switch (type) { case MOD_LOAD: - faithunits->rm_type = RMAN_ARRAY; - faithunits->rm_descr = "configurable if_faith units"; - err = rman_init(faithunits); - if (err != 0) - return (err); - err = rman_manage_region(faithunits, 0, FAITH_MAXUNIT); - if (err != 0) { - printf("%s: faithunits: rman_manage_region: " - "Failed %d\n", FAITHNAME, err); - rman_fini(faithunits); - return (err); - } LIST_INIT(&faith_softc_list); if_clone_attach(&faith_cloner); @@ -156,10 +138,6 @@ faithmodevent(mod, type, data) faith_clone_destroy( &LIST_FIRST(&faith_softc_list)->sc_if); - err = rman_fini(faithunits); - if (err != 0) - return (err); - break; } return 0; @@ -177,34 +155,16 @@ MODULE_VERSION(if_faith, 1); int faith_clone_create(ifc, unit) struct if_clone *ifc; - int *unit; + int unit; { - struct resource *r; struct faith_softc *sc; - if (*unit > FAITH_MAXUNIT) - return (ENXIO); - - if (*unit < 0) { - r = rman_reserve_resource(faithunits, 0, FAITH_MAXUNIT, 1, - RF_ALLOCATED | RF_ACTIVE, NULL); - if (r == NULL) - return (ENOSPC); - *unit = rman_get_start(r); - } else { - r = rman_reserve_resource(faithunits, *unit, *unit, 1, - RF_ALLOCATED | RF_ACTIVE, NULL); - if (r == NULL) - return (ENOSPC); - } - sc = malloc(sizeof(struct faith_softc), M_FAITH, M_WAITOK); bzero(sc, sizeof(struct faith_softc)); sc->sc_if.if_softc = sc; sc->sc_if.if_name = FAITHNAME; - sc->sc_if.if_unit = *unit; - sc->r_unit = r; + sc->sc_if.if_unit = unit; sc->sc_if.if_mtu = FAITHMTU; /* Change to BROADCAST experimentaly to announce its prefix. */ @@ -225,16 +185,12 @@ int faith_clone_destroy(ifp) struct ifnet *ifp; { - int err; struct faith_softc *sc = (void *) ifp; LIST_REMOVE(sc, sc_list); bpfdetach(ifp); if_detach(ifp); - err = rman_release_resource(sc->r_unit); - KASSERT(err == 0, ("Unexpected error freeing resource")); - free(sc, M_FAITH); return (0); } diff --git a/sys/net/if_gif.c b/sys/net/if_gif.c index 75ac564..479484f 100644 --- a/sys/net/if_gif.c +++ b/sys/net/if_gif.c @@ -46,8 +46,6 @@ #include <sys/syslog.h> #include <sys/protosw.h> #include <sys/conf.h> -#include <machine/bus.h> /* XXX: Shouldn't really be required! */ -#include <sys/rman.h> #include <machine/cpu.h> #include <net/if.h> @@ -82,10 +80,8 @@ #include <net/net_osdep.h> #define GIFNAME "gif" -#define GIF_MAXUNIT 0x7fff /* ifp->if_unit is only 15 bits */ static MALLOC_DEFINE(M_GIF, "gif", "Generic Tunnel Interface"); -static struct rman gifunits[1]; static LIST_HEAD(, gif_softc) gif_softc_list; void (*ng_gif_input_p)(struct ifnet *ifp, struct mbuf **mp, int af); @@ -93,11 +89,11 @@ void (*ng_gif_input_orphan_p)(struct ifnet *ifp, struct mbuf *m, int af); void (*ng_gif_attach_p)(struct ifnet *ifp); void (*ng_gif_detach_p)(struct ifnet *ifp); -int gif_clone_create __P((struct if_clone *, int *)); +int gif_clone_create __P((struct if_clone *, int)); int gif_clone_destroy __P((struct ifnet *)); -struct if_clone gif_cloner = - IF_CLONE_INITIALIZER("gif", gif_clone_create, gif_clone_destroy); +struct if_clone gif_cloner = IF_CLONE_INITIALIZER("gif", + gif_clone_create, gif_clone_destroy, IF_MAXUNIT); static int gifmodevent __P((module_t, int, void *)); void gif_delete_tunnel __P((struct gif_softc *)); @@ -158,34 +154,16 @@ SYSCTL_INT(_net_link_gif, OID_AUTO, parallel_tunnels, CTLFLAG_RW, int gif_clone_create(ifc, unit) struct if_clone *ifc; - int *unit; + int unit; { - struct resource *r; struct gif_softc *sc; - if (*unit > GIF_MAXUNIT) - return (ENXIO); - - if (*unit < 0) { - r = rman_reserve_resource(gifunits, 0, GIF_MAXUNIT, 1, - RF_ALLOCATED | RF_ACTIVE, NULL); - if (r == NULL) - return (ENOSPC); - *unit = rman_get_start(r); - } else { - r = rman_reserve_resource(gifunits, *unit, *unit, 1, - RF_ALLOCATED | RF_ACTIVE, NULL); - if (r == NULL) - return (EEXIST); - } - sc = malloc (sizeof(struct gif_softc), M_GIF, M_WAITOK); bzero(sc, sizeof(struct gif_softc)); sc->gif_if.if_softc = sc; sc->gif_if.if_name = GIFNAME; - sc->gif_if.if_unit = *unit; - sc->r_unit = r; + sc->gif_if.if_unit = unit; sc->encap_cookie4 = sc->encap_cookie6 = NULL; #ifdef INET @@ -252,9 +230,6 @@ gif_clone_destroy(ifp) bpfdetach(ifp); if_detach(ifp); - err = rman_release_resource(sc->r_unit); - KASSERT(err == 0, ("Unexpected error freeing resource")); - free(sc, M_GIF); return (0); } @@ -265,22 +240,9 @@ gifmodevent(mod, type, data) int type; void *data; { - int err; switch (type) { case MOD_LOAD: - gifunits->rm_type = RMAN_ARRAY; - gifunits->rm_descr = "configurable if_gif units"; - err = rman_init(gifunits); - if (err != 0) - return (err); - err = rman_manage_region(gifunits, 0, GIF_MAXUNIT); - if (err != 0) { - printf("%s: gifunits: rman_manage_region: Failed %d\n", - GIFNAME, err); - rman_fini(gifunits); - return (err); - } LIST_INIT(&gif_softc_list); if_clone_attach(&gif_cloner); @@ -295,9 +257,6 @@ gifmodevent(mod, type, data) while (!LIST_EMPTY(&gif_softc_list)) gif_clone_destroy(&LIST_FIRST(&gif_softc_list)->gif_if); - err = rman_fini(gifunits); - if (err != 0) - return (err); #ifdef INET6 ip6_gif_hlim = 0; #endif diff --git a/sys/net/if_gif.h b/sys/net/if_gif.h index fffad5f..c5dc6d3 100644 --- a/sys/net/if_gif.h +++ b/sys/net/if_gif.h @@ -68,7 +68,6 @@ struct gif_softc { int gif_flags; const struct encaptab *encap_cookie4; const struct encaptab *encap_cookie6; - struct resource *r_unit; /* resource allocated for this unit */ void *gif_netgraph; /* ng_gif(4) netgraph node info */ LIST_ENTRY(gif_softc) gif_link; /* all gif's are linked */ }; diff --git a/sys/net/if_loop.c b/sys/net/if_loop.c index b2b3c09..3b2eb5b 100644 --- a/sys/net/if_loop.c +++ b/sys/net/if_loop.c @@ -99,21 +99,18 @@ #endif #define LONAME "lo" -#define LOMAXUNIT 0x7fff /* ifp->if_unit is only 15 bits */ struct lo_softc { struct ifnet sc_if; /* network-visible interface */ LIST_ENTRY(lo_softc) sc_next; - struct resource *r_unit; }; int loioctl(struct ifnet *, u_long, caddr_t); static void lortrequest(int, struct rtentry *, struct rt_addrinfo *); int looutput(struct ifnet *ifp, struct mbuf *m, struct sockaddr *dst, struct rtentry *rt); -int lo_clone_create(struct if_clone *, int *); +int lo_clone_create(struct if_clone *, int); int lo_clone_destroy(struct ifnet *); -static void locreate(int, struct resource *); struct ifnet *loif = NULL; /* Used externally */ @@ -122,41 +119,12 @@ static MALLOC_DEFINE(M_LO, LONAME, "Loopback Interface"); static LIST_HEAD(lo_list, lo_softc) lo_list; struct if_clone lo_cloner = - IF_CLONE_INITIALIZER(LONAME, lo_clone_create, lo_clone_destroy); - -static struct rman lounits[1]; - -int -lo_clone_create(ifc, unit) - struct if_clone *ifc; - int *unit; -{ - struct resource *r; - - if (*unit > LOMAXUNIT) - return (ENXIO); - - if (*unit < 0) { - r = rman_reserve_resource(lounits, 0, LOMAXUNIT, 1, - RF_ALLOCATED | RF_ACTIVE, NULL); - if (r == NULL) - return (ENOSPC); - *unit = rman_get_start(r); - } else { - r = rman_reserve_resource(lounits, *unit, *unit, 1, - RF_ALLOCATED | RF_ACTIVE, NULL); - if (r == NULL) - return (EEXIST); - } - locreate(*unit, r); - return (0); -} + IF_CLONE_INITIALIZER(LONAME, lo_clone_create, lo_clone_destroy, IF_MAXUNIT); int lo_clone_destroy(ifp) struct ifnet *ifp; { - int err; struct lo_softc *sc; sc = ifp->if_softc; @@ -167,9 +135,6 @@ lo_clone_destroy(ifp) if (loif == ifp) return (EINVAL); - err = rman_release_resource(sc->r_unit); - KASSERT(err == 0, ("Unexpected error freeing resource")); - bpfdetach(ifp); if_detach(ifp); LIST_REMOVE(sc, sc_next); @@ -177,8 +142,10 @@ lo_clone_destroy(ifp) return (0); } -static void -locreate(int unit, struct resource *r) +int +lo_clone_create(ifc, unit) + struct if_clone *ifc; + int unit; { struct lo_softc *sc; @@ -193,40 +160,27 @@ locreate(int unit, struct resource *r) sc->sc_if.if_type = IFT_LOOP; sc->sc_if.if_snd.ifq_maxlen = ifqmaxlen; sc->sc_if.if_softc = sc; - sc->r_unit = r; if_attach(&sc->sc_if); bpfattach(&sc->sc_if, DLT_NULL, sizeof(u_int)); LIST_INSERT_HEAD(&lo_list, sc, sc_next); if (loif == NULL) loif = &sc->sc_if; + + return (0); } static int loop_modevent(module_t mod, int type, void *data) { int err; - int unit; switch (type) { case MOD_LOAD: - lounits->rm_type = RMAN_ARRAY; - lounits->rm_descr = "configurable if_loop units"; - err = rman_init(lounits); - if (err != 0) - return (err); - err = rman_manage_region(lounits, 0, LOMAXUNIT); - if (err != 0) { - printf("%s: lounits: rman_manage_region: Failed %d\n", - LONAME, err); - rman_fini(lounits); - return (err); - } LIST_INIT(&lo_list); if_clone_attach(&lo_cloner); /* Create lo0 */ - unit = 0; - err = lo_clone_create(NULL, &unit); + err = if_clone_create("lo0", sizeof ("lo0")); KASSERT(err == 0, ("%s: can't create lo0", __func__)); break; case MOD_UNLOAD: diff --git a/sys/net/if_stf.c b/sys/net/if_stf.c index ee14ece..3aaae46 100644 --- a/sys/net/if_stf.c +++ b/sys/net/if_stf.c @@ -86,8 +86,6 @@ #include <sys/kernel.h> #include <sys/protosw.h> #include <sys/queue.h> -#include <machine/bus.h> /* XXX: Shouldn't really be required! */ -#include <sys/rman.h> #include <machine/cpu.h> #include <sys/malloc.h> @@ -118,7 +116,6 @@ #include <net/bpf.h> #define STFNAME "stf" -#define STF_MAXUNIT 0 /* only one is currently allowed */ #define IN6_IS_ADDR_6TO4(x) (ntohs((x)->s6_addr16[0]) == 0x2002) #define GET_V4(x) ((struct in_addr *)(&(x)->s6_addr16[1])) @@ -131,14 +128,12 @@ struct stf_softc { } __sc_ro46; #define sc_ro __sc_ro46.__sc_ro4 const struct encaptab *encap_cookie; - struct resource *r_unit; /* resource allocated for this unit */ LIST_ENTRY(stf_softc) sc_list; /* all stf's are linked */ }; static LIST_HEAD(, stf_softc) stf_softc_list; static MALLOC_DEFINE(M_STF, STFNAME, "6to4 Tunnel Interface"); -static struct rman stfunits[1]; static int ip_stf_ttl = 40; extern struct domain inetdomain; @@ -162,40 +157,23 @@ static int stf_checkaddr6 __P((struct stf_softc *, struct in6_addr *, static void stf_rtrequest __P((int, struct rtentry *, struct rt_addrinfo *)); static int stf_ioctl __P((struct ifnet *, u_long, caddr_t)); -int stf_clone_create __P((struct if_clone *, int *)); +int stf_clone_create __P((struct if_clone *, int)); int stf_clone_destroy __P((struct ifnet *)); +/* only one clone is currently allowed */ struct if_clone stf_cloner = - IF_CLONE_INITIALIZER(STFNAME, stf_clone_create, stf_clone_destroy); + IF_CLONE_INITIALIZER(STFNAME, stf_clone_create, stf_clone_destroy, 0); int stf_clone_create(ifc, unit) struct if_clone *ifc; - int *unit; + int unit; { - struct resource *r; struct stf_softc *sc; - if (*unit > STF_MAXUNIT) - return (ENXIO); - - if (*unit < 0) { - r = rman_reserve_resource(stfunits, 0, STF_MAXUNIT, 1, - RF_ALLOCATED | RF_ACTIVE, NULL); - if (r == NULL) - return (ENOSPC); - *unit = rman_get_start(r); - } else { - r = rman_reserve_resource(stfunits, *unit, *unit, 1, - RF_ALLOCATED | RF_ACTIVE, NULL); - if (r == NULL) - return (EEXIST); - } - sc = malloc(sizeof(struct stf_softc), M_STF, M_WAITOK | M_ZERO); sc->sc_if.if_name = STFNAME; - sc->sc_if.if_unit = *unit; - sc->r_unit = r; + sc->sc_if.if_unit = unit; sc->encap_cookie = encap_attach_func(AF_INET, IPPROTO_IPV6, stf_encapcheck, &in_stf_protosw, sc); @@ -229,9 +207,6 @@ stf_clone_destroy(ifp) bpfdetach(ifp); if_detach(ifp); - err = rman_release_resource(sc->r_unit); - KASSERT(err == 0, ("Unexpected error freeing resource")); - free(sc, M_STF); return (0); } @@ -242,22 +217,9 @@ stfmodevent(mod, type, data) int type; void *data; { - int err; switch (type) { case MOD_LOAD: - stfunits->rm_type = RMAN_ARRAY; - stfunits->rm_descr = "configurable if_stf units"; - err = rman_init(stfunits); - if (err != 0) - return (err); - err = rman_manage_region(stfunits, 0, STF_MAXUNIT); - if (err != 0) { - printf("%s: stfunits: rman_manage_region: Failed %d\n", - STFNAME, err); - rman_fini(stfunits); - return (err); - } LIST_INIT(&stf_softc_list); if_clone_attach(&stf_cloner); @@ -267,10 +229,6 @@ stfmodevent(mod, type, data) while (!LIST_EMPTY(&stf_softc_list)) stf_clone_destroy(&LIST_FIRST(&stf_softc_list)->sc_if); - - err = rman_fini(stfunits); - KASSERT(err == 0, ("Unexpected error freeing resource")); - break; } diff --git a/sys/net/if_vlan.c b/sys/net/if_vlan.c index 797feac..2d142d7 100644 --- a/sys/net/if_vlan.c +++ b/sys/net/if_vlan.c @@ -66,8 +66,6 @@ #include <sys/sockio.h> #include <sys/sysctl.h> #include <sys/systm.h> -#include <machine/bus.h> /* XXX: Shouldn't really be required! */ -#include <sys/rman.h> #include <net/bpf.h> #include <net/ethernet.h> @@ -83,17 +81,15 @@ #endif #define VLANNAME "vlan" -#define VLAN_MAXUNIT 0x7fff /* ifp->if_unit is only 15 bits */ SYSCTL_DECL(_net_link); SYSCTL_NODE(_net_link, IFT_L2VLAN, vlan, CTLFLAG_RW, 0, "IEEE 802.1Q VLAN"); SYSCTL_NODE(_net_link_vlan, PF_LINK, link, CTLFLAG_RW, 0, "for consistency"); static MALLOC_DEFINE(M_VLAN, "vlan", "802.1Q Virtual LAN Interface"); -static struct rman vlanunits[1]; static LIST_HEAD(, ifvlan) ifv_list; -static int vlan_clone_create(struct if_clone *, int *); +static int vlan_clone_create(struct if_clone *, int); static int vlan_clone_destroy(struct ifnet *); static void vlan_start(struct ifnet *ifp); static void vlan_ifinit(void *foo); @@ -105,8 +101,8 @@ static int vlan_setmulti(struct ifnet *ifp); static int vlan_unconfig(struct ifnet *ifp); static int vlan_config(struct ifvlan *ifv, struct ifnet *p); -struct if_clone vlan_cloner = - IF_CLONE_INITIALIZER("vlan", vlan_clone_create, vlan_clone_destroy); +struct if_clone vlan_cloner = IF_CLONE_INITIALIZER("vlan", + vlan_clone_create, vlan_clone_destroy, IF_MAXUNIT); /* * Program our multicast filter. What we're actually doing is @@ -176,22 +172,9 @@ vlan_setmulti(struct ifnet *ifp) static int vlan_modevent(module_t mod, int type, void *data) { - int err; switch (type) { case MOD_LOAD: - vlanunits->rm_type = RMAN_ARRAY; - vlanunits->rm_descr = "configurable if_vlan units"; - err = rman_init(vlanunits); - if (err != 0) - return (err); - err = rman_manage_region(vlanunits, 0, VLAN_MAXUNIT); - if (err != 0) { - printf("%s: vlanunits: rman_manage_region: Failed %d\n", - VLANNAME, err); - rman_fini(vlanunits); - return (err); - } LIST_INIT(&ifv_list); vlan_input_p = vlan_input; vlan_input_tag_p = vlan_input_tag; @@ -203,9 +186,6 @@ vlan_modevent(module_t mod, int type, void *data) vlan_input_tag_p = NULL; while (!LIST_EMPTY(&ifv_list)) vlan_clone_destroy(&LIST_FIRST(&ifv_list)->ifv_if); - err = rman_fini(vlanunits); - if (err != 0) - return (err); break; } return 0; @@ -220,29 +200,12 @@ static moduledata_t vlan_mod = { DECLARE_MODULE(if_vlan, vlan_mod, SI_SUB_PSEUDO, SI_ORDER_ANY); static int -vlan_clone_create(struct if_clone *ifc, int *unit) +vlan_clone_create(struct if_clone *ifc, int unit) { - struct resource *r; struct ifvlan *ifv; struct ifnet *ifp; int s; - if (*unit > VLAN_MAXUNIT) - return (ENXIO); - - if (*unit < 0) { - r = rman_reserve_resource(vlanunits, 0, VLAN_MAXUNIT, 1, - RF_ALLOCATED | RF_ACTIVE, NULL); - if (r == NULL) - return (ENOSPC); - *unit = rman_get_start(r); - } else { - r = rman_reserve_resource(vlanunits, *unit, *unit, 1, - RF_ALLOCATED | RF_ACTIVE, NULL); - if (r == NULL) - return (EEXIST); - } - ifv = malloc(sizeof(struct ifvlan), M_VLAN, M_WAITOK | M_ZERO); ifp = &ifv->ifv_if; SLIST_INIT(&ifv->vlan_mc_listhead); @@ -253,8 +216,7 @@ vlan_clone_create(struct if_clone *ifc, int *unit) ifp->if_softc = ifv; ifp->if_name = "vlan"; - ifp->if_unit = *unit; - ifv->r_unit = r; + ifp->if_unit = unit; /* NB: flags are not set here */ ifp->if_linkmib = &ifv->ifv_mib; ifp->if_linkmiblen = sizeof ifv->ifv_mib; @@ -279,7 +241,6 @@ vlan_clone_destroy(struct ifnet *ifp) { struct ifvlan *ifv = ifp->if_softc; int s; - int err; s = splnet(); LIST_REMOVE(ifv, ifv_list); @@ -288,8 +249,6 @@ vlan_clone_destroy(struct ifnet *ifp) ether_ifdetach(ifp, ETHER_BPF_SUPPORTED); - err = rman_release_resource(ifv->r_unit); - KASSERT(err == 0, ("Unexpected error freeing resource")); free(ifv, M_VLAN); return (0); } diff --git a/sys/net/if_vlan_var.h b/sys/net/if_vlan_var.h index faaad57..c74064a 100644 --- a/sys/net/if_vlan_var.h +++ b/sys/net/if_vlan_var.h @@ -48,7 +48,6 @@ struct ifvlan { } ifv_mib; SLIST_HEAD(__vlan_mchead, vlan_mc_entry) vlan_mc_listhead; LIST_ENTRY(ifvlan) ifv_list; - struct resource *r_unit; /* resource allocated for this unit */ }; #define ifv_if ifv_ac.ac_if #define ifv_tag ifv_mib.ifvm_tag |