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
This commit is contained in:
Maxime Henrion
parent
1e1d598496
commit
3b16e7b252
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=92081
63
sys/net/if.c
63
sys/net/if.c
@ -119,6 +119,7 @@ SYSINIT(interface_check, SI_SUB_PROTO_IF, SI_ORDER_FIRST, if_check, NULL)
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MALLOC_DEFINE(M_IFADDR, "ifaddr", "interface address");
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MALLOC_DEFINE(M_IFMADDR, "ether_multi", "link-level multicast address");
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MALLOC_DEFINE(M_CLONE, "clone", "interface cloning framework");
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#define CDEV_MAJOR 165
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@ -580,7 +581,7 @@ if_clone_create(name, len)
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{
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struct if_clone *ifc;
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char *dp;
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int wildcard;
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int wildcard, bytoff, bitoff;
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int unit;
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int err;
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@ -591,12 +592,41 @@ if_clone_create(name, len)
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if (ifunit(name) != NULL)
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return (EEXIST);
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bytoff = bitoff = 0;
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wildcard = (unit < 0);
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/*
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* Find a free unit if none was given.
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*/
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if (wildcard) {
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while ((bytoff < ifc->ifc_bmlen)
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&& (ifc->ifc_units[bytoff] == 0xff))
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bytoff++;
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if (bytoff >= ifc->ifc_bmlen)
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return (ENOSPC);
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while ((ifc->ifc_units[bytoff] & (1 << bitoff)) != 0)
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bitoff++;
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unit = (bytoff << 3) + bitoff;
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}
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err = (*ifc->ifc_create)(ifc, &unit);
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if (unit > ifc->ifc_maxunit)
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return (ENXIO);
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err = (*ifc->ifc_create)(ifc, unit);
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if (err != 0)
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return (err);
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if (!wildcard) {
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bytoff = unit >> 3;
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bitoff = unit - (bytoff << 3);
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}
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/*
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* Allocate the unit in the bitmap.
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*/
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KASSERT((ifc->ifc_units[bytoff] & (1 << bitoff)) == 0,
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("%s: bit is already set", __func__));
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ifc->ifc_units[bytoff] |= (1 << bitoff);
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/* In the wildcard case, we need to update the name. */
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if (wildcard) {
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for (dp = name; *dp != '\0'; dp++);
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@ -624,8 +654,10 @@ if_clone_destroy(name)
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{
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struct if_clone *ifc;
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struct ifnet *ifp;
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int bytoff, bitoff;
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int err, unit;
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ifc = if_clone_lookup(name, NULL);
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ifc = if_clone_lookup(name, &unit);
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if (ifc == NULL)
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return (EINVAL);
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@ -636,7 +668,19 @@ if_clone_destroy(name)
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if (ifc->ifc_destroy == NULL)
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return (EOPNOTSUPP);
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return ((*ifc->ifc_destroy)(ifp));
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err = (*ifc->ifc_destroy)(ifp);
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if (err != 0)
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return (err);
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/*
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* Compute offset in the bitmap and deallocate the unit.
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*/
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bytoff = unit >> 3;
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bitoff = unit - (bytoff << 3);
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KASSERT((ifc->ifc_units[bytoff] & (1 << bitoff)) != 0,
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("%s: bit is already cleared", __func__));
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ifc->ifc_units[bytoff] &= ~(1 << bitoff);
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return (0);
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}
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/*
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@ -689,7 +733,17 @@ void
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if_clone_attach(ifc)
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struct if_clone *ifc;
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{
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int len, maxclone;
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/*
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* Compute bitmap size and allocate it.
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*/
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maxclone = ifc->ifc_maxunit + 1;
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len = maxclone >> 3;
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if ((len << 3) < maxclone)
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len++;
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ifc->ifc_units = malloc(len, M_CLONE, M_WAITOK | M_ZERO);
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ifc->ifc_bmlen = len;
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LIST_INSERT_HEAD(&if_cloners, ifc, ifc_list);
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if_cloners_count++;
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}
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@ -703,6 +757,7 @@ if_clone_detach(ifc)
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{
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LIST_REMOVE(ifc, ifc_list);
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free(ifc->ifc_units, M_CLONE);
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if_cloners_count--;
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}
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10
sys/net/if.h
10
sys/net/if.h
@ -55,6 +55,7 @@ struct ifnet;
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*/
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#define IFNAMSIZ 16
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#define IF_NAMESIZE IFNAMSIZ
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#define IF_MAXUNIT 0x7fff /* ifp->if_unit is only 15 bits */
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/*
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* Structure describing a `cloning' interface.
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@ -63,13 +64,16 @@ struct if_clone {
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LIST_ENTRY(if_clone) ifc_list; /* on list of cloners */
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const char *ifc_name; /* name of device, e.g. `gif' */
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size_t ifc_namelen; /* length of name */
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int ifc_maxunit; /* maximum unit number */
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unsigned char *ifc_units; /* bitmap to handle units */
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int ifc_bmlen; /* bitmap length */
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int (*ifc_create)(struct if_clone *, int *);
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int (*ifc_create)(struct if_clone *, int);
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int (*ifc_destroy)(struct ifnet *);
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};
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#define IF_CLONE_INITIALIZER(name, create, destroy) \
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{ { 0 }, name, sizeof(name) - 1, create, destroy }
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#define IF_CLONE_INITIALIZER(name, create, destroy, maxunit) \
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{ { 0 }, name, sizeof(name) - 1, maxunit, NULL, 0, create, destroy }
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/*
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* Structure used to query names of interface cloners.
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@ -57,8 +57,6 @@
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#include <sys/queue.h>
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#include <sys/types.h>
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#include <sys/malloc.h>
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#include <machine/bus.h> /* XXX: Shouldn't really be required! */
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#include <sys/rman.h>
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#include <net/if.h>
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#include <net/if_types.h>
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@ -85,11 +83,9 @@
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#include <net/net_osdep.h>
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#define FAITHNAME "faith"
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#define FAITH_MAXUNIT 0x7fff /* ifp->if_unit is only 15 bits */
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struct faith_softc {
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struct ifnet sc_if; /* must be first */
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struct resource *r_unit;
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LIST_ENTRY(faith_softc) sc_list;
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};
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@ -104,14 +100,13 @@ static int faithprefix __P((struct in6_addr *));
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static int faithmodevent __P((module_t, int, void *));
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static MALLOC_DEFINE(M_FAITH, FAITHNAME, "Firewall Assisted Tunnel Interface");
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static struct rman faithunits[1];
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static LIST_HEAD(, faith_softc) faith_softc_list;
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int faith_clone_create __P((struct if_clone *, int *));
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int faith_clone_create __P((struct if_clone *, int));
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int faith_clone_destroy __P((struct ifnet *));
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struct if_clone faith_cloner =
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IF_CLONE_INITIALIZER(FAITHNAME, faith_clone_create, faith_clone_destroy);
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struct if_clone faith_cloner = IF_CLONE_INITIALIZER(FAITHNAME,
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faith_clone_create, faith_clone_destroy, IF_MAXUNIT);
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#define FAITHMTU 1500
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@ -121,22 +116,9 @@ faithmodevent(mod, type, data)
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int type;
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void *data;
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{
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int err;
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switch (type) {
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case MOD_LOAD:
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faithunits->rm_type = RMAN_ARRAY;
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faithunits->rm_descr = "configurable if_faith units";
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err = rman_init(faithunits);
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if (err != 0)
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return (err);
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err = rman_manage_region(faithunits, 0, FAITH_MAXUNIT);
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if (err != 0) {
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printf("%s: faithunits: rman_manage_region: "
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"Failed %d\n", FAITHNAME, err);
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rman_fini(faithunits);
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return (err);
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}
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LIST_INIT(&faith_softc_list);
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if_clone_attach(&faith_cloner);
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@ -156,10 +138,6 @@ faithmodevent(mod, type, data)
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faith_clone_destroy(
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&LIST_FIRST(&faith_softc_list)->sc_if);
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err = rman_fini(faithunits);
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if (err != 0)
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return (err);
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break;
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}
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return 0;
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@ -177,34 +155,16 @@ MODULE_VERSION(if_faith, 1);
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int
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faith_clone_create(ifc, unit)
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struct if_clone *ifc;
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int *unit;
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int unit;
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{
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struct resource *r;
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struct faith_softc *sc;
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if (*unit > FAITH_MAXUNIT)
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return (ENXIO);
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if (*unit < 0) {
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r = rman_reserve_resource(faithunits, 0, FAITH_MAXUNIT, 1,
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RF_ALLOCATED | RF_ACTIVE, NULL);
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if (r == NULL)
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return (ENOSPC);
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*unit = rman_get_start(r);
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} else {
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r = rman_reserve_resource(faithunits, *unit, *unit, 1,
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RF_ALLOCATED | RF_ACTIVE, NULL);
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if (r == NULL)
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return (ENOSPC);
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}
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sc = malloc(sizeof(struct faith_softc), M_FAITH, M_WAITOK);
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bzero(sc, sizeof(struct faith_softc));
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sc->sc_if.if_softc = sc;
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sc->sc_if.if_name = FAITHNAME;
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sc->sc_if.if_unit = *unit;
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sc->r_unit = r;
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sc->sc_if.if_unit = unit;
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sc->sc_if.if_mtu = FAITHMTU;
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/* Change to BROADCAST experimentaly to announce its prefix. */
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@ -225,16 +185,12 @@ int
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faith_clone_destroy(ifp)
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struct ifnet *ifp;
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{
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int err;
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struct faith_softc *sc = (void *) ifp;
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LIST_REMOVE(sc, sc_list);
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bpfdetach(ifp);
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if_detach(ifp);
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err = rman_release_resource(sc->r_unit);
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KASSERT(err == 0, ("Unexpected error freeing resource"));
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free(sc, M_FAITH);
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return (0);
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}
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@ -46,8 +46,6 @@
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#include <sys/syslog.h>
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#include <sys/protosw.h>
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#include <sys/conf.h>
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#include <machine/bus.h> /* XXX: Shouldn't really be required! */
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#include <sys/rman.h>
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#include <machine/cpu.h>
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#include <net/if.h>
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@ -82,10 +80,8 @@
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#include <net/net_osdep.h>
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#define GIFNAME "gif"
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#define GIF_MAXUNIT 0x7fff /* ifp->if_unit is only 15 bits */
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static MALLOC_DEFINE(M_GIF, "gif", "Generic Tunnel Interface");
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static struct rman gifunits[1];
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static LIST_HEAD(, gif_softc) gif_softc_list;
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void (*ng_gif_input_p)(struct ifnet *ifp, struct mbuf **mp, int af);
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@ -93,11 +89,11 @@ void (*ng_gif_input_orphan_p)(struct ifnet *ifp, struct mbuf *m, int af);
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void (*ng_gif_attach_p)(struct ifnet *ifp);
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void (*ng_gif_detach_p)(struct ifnet *ifp);
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int gif_clone_create __P((struct if_clone *, int *));
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int gif_clone_create __P((struct if_clone *, int));
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int gif_clone_destroy __P((struct ifnet *));
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struct if_clone gif_cloner =
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IF_CLONE_INITIALIZER("gif", gif_clone_create, gif_clone_destroy);
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struct if_clone gif_cloner = IF_CLONE_INITIALIZER("gif",
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gif_clone_create, gif_clone_destroy, IF_MAXUNIT);
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static int gifmodevent __P((module_t, int, void *));
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void gif_delete_tunnel __P((struct gif_softc *));
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@ -158,34 +154,16 @@ SYSCTL_INT(_net_link_gif, OID_AUTO, parallel_tunnels, CTLFLAG_RW,
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int
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gif_clone_create(ifc, unit)
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struct if_clone *ifc;
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int *unit;
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int unit;
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{
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struct resource *r;
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struct gif_softc *sc;
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if (*unit > GIF_MAXUNIT)
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return (ENXIO);
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if (*unit < 0) {
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r = rman_reserve_resource(gifunits, 0, GIF_MAXUNIT, 1,
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RF_ALLOCATED | RF_ACTIVE, NULL);
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if (r == NULL)
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return (ENOSPC);
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*unit = rman_get_start(r);
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} else {
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r = rman_reserve_resource(gifunits, *unit, *unit, 1,
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RF_ALLOCATED | RF_ACTIVE, NULL);
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if (r == NULL)
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return (EEXIST);
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}
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sc = malloc (sizeof(struct gif_softc), M_GIF, M_WAITOK);
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bzero(sc, sizeof(struct gif_softc));
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sc->gif_if.if_softc = sc;
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sc->gif_if.if_name = GIFNAME;
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sc->gif_if.if_unit = *unit;
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sc->r_unit = r;
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sc->gif_if.if_unit = unit;
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sc->encap_cookie4 = sc->encap_cookie6 = NULL;
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#ifdef INET
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@ -252,9 +230,6 @@ gif_clone_destroy(ifp)
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bpfdetach(ifp);
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if_detach(ifp);
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err = rman_release_resource(sc->r_unit);
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KASSERT(err == 0, ("Unexpected error freeing resource"));
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free(sc, M_GIF);
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return (0);
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}
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@ -265,22 +240,9 @@ gifmodevent(mod, type, data)
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int type;
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void *data;
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{
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int err;
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switch (type) {
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case MOD_LOAD:
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gifunits->rm_type = RMAN_ARRAY;
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gifunits->rm_descr = "configurable if_gif units";
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err = rman_init(gifunits);
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if (err != 0)
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return (err);
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err = rman_manage_region(gifunits, 0, GIF_MAXUNIT);
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if (err != 0) {
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printf("%s: gifunits: rman_manage_region: Failed %d\n",
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GIFNAME, err);
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rman_fini(gifunits);
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return (err);
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}
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LIST_INIT(&gif_softc_list);
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if_clone_attach(&gif_cloner);
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@ -295,9 +257,6 @@ gifmodevent(mod, type, data)
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while (!LIST_EMPTY(&gif_softc_list))
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gif_clone_destroy(&LIST_FIRST(&gif_softc_list)->gif_if);
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err = rman_fini(gifunits);
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if (err != 0)
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return (err);
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#ifdef INET6
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ip6_gif_hlim = 0;
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#endif
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@ -68,7 +68,6 @@ struct gif_softc {
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int gif_flags;
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const struct encaptab *encap_cookie4;
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const struct encaptab *encap_cookie6;
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struct resource *r_unit; /* resource allocated for this unit */
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void *gif_netgraph; /* ng_gif(4) netgraph node info */
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LIST_ENTRY(gif_softc) gif_link; /* all gif's are linked */
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};
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@ -99,21 +99,18 @@
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#endif
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#define LONAME "lo"
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#define LOMAXUNIT 0x7fff /* ifp->if_unit is only 15 bits */
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struct lo_softc {
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struct ifnet sc_if; /* network-visible interface */
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LIST_ENTRY(lo_softc) sc_next;
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struct resource *r_unit;
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};
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int loioctl(struct ifnet *, u_long, caddr_t);
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static void lortrequest(int, struct rtentry *, struct rt_addrinfo *);
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int looutput(struct ifnet *ifp, struct mbuf *m,
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struct sockaddr *dst, struct rtentry *rt);
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int lo_clone_create(struct if_clone *, int *);
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int lo_clone_create(struct if_clone *, int);
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int lo_clone_destroy(struct ifnet *);
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static void locreate(int, struct resource *);
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struct ifnet *loif = NULL; /* Used externally */
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@ -122,41 +119,12 @@ static MALLOC_DEFINE(M_LO, LONAME, "Loopback Interface");
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static LIST_HEAD(lo_list, lo_softc) lo_list;
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struct if_clone lo_cloner =
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IF_CLONE_INITIALIZER(LONAME, lo_clone_create, lo_clone_destroy);
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static struct rman lounits[1];
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int
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lo_clone_create(ifc, unit)
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struct if_clone *ifc;
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int *unit;
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{
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struct resource *r;
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if (*unit > LOMAXUNIT)
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return (ENXIO);
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if (*unit < 0) {
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r = rman_reserve_resource(lounits, 0, LOMAXUNIT, 1,
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RF_ALLOCATED | RF_ACTIVE, NULL);
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if (r == NULL)
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return (ENOSPC);
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*unit = rman_get_start(r);
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} else {
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r = rman_reserve_resource(lounits, *unit, *unit, 1,
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RF_ALLOCATED | RF_ACTIVE, NULL);
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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:
|
||||
|
||||
@ -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;
|
||||
}
|
||||
|
||||
|
||||
@ -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);
|
||||
}
|
||||
|
||||
@ -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
|
||||
|
||||
Loading…
Reference in New Issue
Block a user