d/freebsd-nq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Upgrade the netgraph vlan node to support 802.1q, encapsulation type,

Browse Source 
PCP and CFI fields.

* Ethernet_type for VLAN encapsulation is tunable, default is 0x8100;
* PCP (Priority code point) and CFI (canonical format indicator) is
  tunable per VID;
* Tunable encapsulation to support 802.1q
* Encapsulation/Decapsulation code improvements

New messages have been added for this netgraph node to support the
new features.

However, the legacy "vlan" id is still supported and compiled in by
default.  It can be disabled in a future release.

TODO:

* Documentation
* Examples

PR:		kern/161908
Submitted by:	Ivan <rozhuk.im@gmail.com>
This commit is contained in:
Adrian Chadd 2012-03-11 19:08:56 +00:00
parent a72505824c
commit bbf53c35ea
2 changed files with 427 additions and 150 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

532
sys/netgraph/ng_vlan.c
View File

@ -1,5 +1,6 @@
/*-
* Copyright (c) 2003 IPNET Internet Communication Company
* Copyright (c) 2011 - 2012 Rozhuk Ivan <rozhuk.im@gmail.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@ -46,6 +47,22 @@
#include <netgraph/ng_vlan.h>
#include <netgraph/netgraph.h>
struct ng_vlan_private {
hook_p downstream_hook;
hook_p nomatch_hook;
uint32_t decap_enable;
uint32_t encap_enable;
uint16_t encap_proto;
hook_p vlan_hook[(EVL_VLID_MASK + 1)];
};
typedef struct ng_vlan_private *priv_p;
#define ETHER_VLAN_HDR_LEN (ETHER_HDR_LEN + ETHER_VLAN_ENCAP_LEN)
#define VLAN_TAG_MASK 0xFFFF
#define HOOK_VLAN_TAG_SET_MASK ((uintptr_t)((~0) & ~(VLAN_TAG_MASK)))
#define IS_HOOK_VLAN_SET(hdata) \
((((uintptr_t)hdata) & HOOK_VLAN_TAG_SET_MASK) == HOOK_VLAN_TAG_SET_MASK)
static ng_constructor_t ng_vlan_constructor;
static ng_rcvmsg_t ng_vlan_rcvmsg;
static ng_shutdown_t ng_vlan_shutdown;
@ -110,6 +127,55 @@ static const struct ng_cmdlist ng_vlan_cmdlist[] = {
NULL,
&ng_vlan_table_type
},
{
NGM_VLAN_COOKIE,
NGM_VLAN_DEL_VID_FLT,
"delvidflt",
&ng_parse_uint16_type,
NULL
},
{
NGM_VLAN_COOKIE,
NGM_VLAN_GET_DECAP,
"getdecap",
NULL,
&ng_parse_hint32_type
},
{
NGM_VLAN_COOKIE,
NGM_VLAN_SET_DECAP,
"setdecap",
&ng_parse_hint32_type,
NULL
},
{
NGM_VLAN_COOKIE,
NGM_VLAN_GET_ENCAP,
"getencap",
NULL,
&ng_parse_hint32_type
},
{
NGM_VLAN_COOKIE,
NGM_VLAN_SET_ENCAP,
"setencap",
&ng_parse_hint32_type,
NULL
},
{
NGM_VLAN_COOKIE,
NGM_VLAN_GET_ENCAP_PROTO,
"getencapproto",
NULL,
&ng_parse_hint16_type
},
{
NGM_VLAN_COOKIE,
NGM_VLAN_SET_ENCAP_PROTO,
"setencapproto",
&ng_parse_hint16_type,
NULL
},
{ 0 }
};
@ -126,44 +192,40 @@ static struct ng_type ng_vlan_typestruct = {
};
NETGRAPH_INIT(vlan, &ng_vlan_typestruct);
struct filter {
LIST_ENTRY(filter) next;
u_int16_t vlan;
hook_p hook;
};
#define HASHSIZE 16
#define HASH(id) ((((id) >> 8) ^ ((id) >> 4) ^ (id)) & 0x0f)
LIST_HEAD(filterhead, filter);
/*
* Helper functions.
*/
typedef struct {
hook_p downstream_hook;
hook_p nomatch_hook;
struct filterhead hashtable[HASHSIZE];
u_int32_t nent;
} *priv_p;
static struct filter *
ng_vlan_findentry(priv_p priv, u_int16_t vlan)
static __inline int
m_chk(struct mbuf **mp, int len)
{
struct filterhead *chain = &priv->hashtable[HASH(vlan)];
struct filter *f;
LIST_FOREACH(f, chain, next)
if (f->vlan == vlan)
return (f);
return (NULL);
if ((*mp)->m_pkthdr.len < len) {
m_freem((*mp));
(*mp) = NULL;
return (EINVAL);
}
if ((*mp)->m_len < len && ((*mp) = m_pullup((*mp), len)) == NULL)
return (ENOBUFS);
return (0);
}
/*
* Netgraph node functions.
*/
static int
ng_vlan_constructor(node_p node)
{
priv_p priv;
int i;
priv = malloc(sizeof(*priv), M_NETGRAPH, M_WAITOK | M_ZERO);
for (i = 0; i < HASHSIZE; i++)
LIST_INIT(&priv->hashtable[i]);
priv->decap_enable = 0;
priv->encap_enable = VLAN_ENCAP_FROM_FILTER;
priv->encap_proto = htons(ETHERTYPE_VLAN);
NG_NODE_SET_PRIVATE(node, priv);
return (0);
}
@ -191,13 +253,14 @@ static int
ng_vlan_rcvmsg(node_p node, item_p item, hook_p lasthook)
{
const priv_p priv = NG_NODE_PRIVATE(node);
int error = 0;
struct ng_mesg *msg, *resp = NULL;
struct ng_vlan_filter *vf;
struct filter *f;
hook_p hook;
struct ng_vlan_table *t;
int i;
uintptr_t hook_data;
int i, vlan_count;
uint16_t vid;
int error = 0;
NGI_GET_MSG(item, msg);
/* Deal with message according to cookie and command. */
@ -212,12 +275,23 @@ ng_vlan_rcvmsg(node_p node, item_p item, hook_p lasthook)
}
vf = (struct ng_vlan_filter *)msg->data;
/* Sanity check the VLAN ID value. */
if (vf->vlan & ~EVL_VLID_MASK) {
#ifdef NG_VLAN_USE_OLD_VLAN_NAME
if (vf->vid == 0 && vf->vid != vf->vlan) {
vf->vid = vf->vlan;
} else if (vf->vid != 0 && vf->vlan != 0 &&
vf->vid != vf->vlan) {
error = EINVAL;
break;
}
#endif
if (vf->vid & ~EVL_VLID_MASK ||
vf->pcp & ~7 ||
vf->cfi & ~1) {
error = EINVAL;
break;
}
/* Check that a referenced hook exists. */
hook = ng_findhook(node, vf->hook);
hook = ng_findhook(node, vf->hook_name);
if (hook == NULL) {
error = ENOENT;
break;
@ -229,30 +303,20 @@ ng_vlan_rcvmsg(node_p node, item_p item, hook_p lasthook)
break;
}
/* And is not already in service. */
if (NG_HOOK_PRIVATE(hook) != NULL) {
if (IS_HOOK_VLAN_SET(NG_HOOK_PRIVATE(hook))) {
error = EEXIST;
break;
}
/* Check we don't already trap this VLAN. */
if (ng_vlan_findentry(priv, vf->vlan)) {
if (priv->vlan_hook[vf->vid] != NULL) {
error = EEXIST;
break;
}
/* Create filter. */
f = malloc(sizeof(*f),
M_NETGRAPH, M_NOWAIT | M_ZERO);
if (f == NULL) {
error = ENOMEM;
break;
}
/* Link filter and hook together. */
f->hook = hook;
f->vlan = vf->vlan;
NG_HOOK_SET_PRIVATE(hook, f);
/* Register filter in a hash table. */
LIST_INSERT_HEAD(
&priv->hashtable[HASH(f->vlan)], f, next);
priv->nent++;
/* Link vlan and hook together. */
NG_HOOK_SET_PRIVATE(hook,
(void *)(HOOK_VLAN_TAG_SET_MASK |
EVL_MAKETAG(vf->vid, vf->pcp, vf->cfi)));
priv->vlan_hook[vf->vid] = hook;
break;
case NGM_VLAN_DEL_FILTER:
/* Check that message is long enough. */
@ -262,37 +326,151 @@ ng_vlan_rcvmsg(node_p node, item_p item, hook_p lasthook)
}
/* Check that hook exists and is active. */
hook = ng_findhook(node, (char *)msg->data);
if (hook == NULL ||
(f = NG_HOOK_PRIVATE(hook)) == NULL) {
if (hook == NULL) {
error = ENOENT;
break;
}
hook_data = (uintptr_t)NG_HOOK_PRIVATE(hook);
if (IS_HOOK_VLAN_SET(hook_data) == 0) {
error = ENOENT;
break;
}
KASSERT(priv->vlan_hook[EVL_VLANOFTAG(hook_data)] == hook,
("%s: NGM_VLAN_DEL_FILTER: Invalid VID for Hook = %s\n",
__func__, (char *)msg->data));
/* Purge a rule that refers to this hook. */
priv->vlan_hook[EVL_VLANOFTAG(hook_data)] = NULL;
NG_HOOK_SET_PRIVATE(hook, NULL);
break;
case NGM_VLAN_DEL_VID_FLT:
/* Check that message is long enough. */
if (msg->header.arglen != sizeof(uint16_t)) {
error = EINVAL;
break;
}
vid = (*((uint16_t *)msg->data));
/* Sanity check the VLAN ID value. */
if (vid & ~EVL_VLID_MASK) {
error = EINVAL;
break;
}
/* Check that hook exists and is active. */
hook = priv->vlan_hook[vid];
if (hook == NULL) {
error = ENOENT;
break;
}
hook_data = (uintptr_t)NG_HOOK_PRIVATE(hook);
if (IS_HOOK_VLAN_SET(hook_data) == 0) {
error = ENOENT;
break;
}
KASSERT(EVL_VLANOFTAG(hook_data) == vid,
("%s: NGM_VLAN_DEL_VID_FLT:"
" Invalid VID Hook = %us, must be: %us\n",
__func__, (uint16_t )EVL_VLANOFTAG(hook_data),
vid));
/* Purge a rule that refers to this hook. */
priv->vlan_hook[vid] = NULL;
NG_HOOK_SET_PRIVATE(hook, NULL);
LIST_REMOVE(f, next);
priv->nent--;
free(f, M_NETGRAPH);
break;
case NGM_VLAN_GET_TABLE:
/* Calculate vlans. */
vlan_count = 0;
for (i = 0; i < (EVL_VLID_MASK + 1); i ++) {
if (priv->vlan_hook[i] != NULL &&
NG_HOOK_IS_VALID(priv->vlan_hook[i]))
vlan_count ++;
}
/* Allocate memory for responce. */
NG_MKRESPONSE(resp, msg, sizeof(*t) +
priv->nent * sizeof(*t->filter), M_NOWAIT);
vlan_count * sizeof(*t->filter), M_NOWAIT);
if (resp == NULL) {
error = ENOMEM;
break;
}
/* Pack data to responce. */
t = (struct ng_vlan_table *)resp->data;
t->n = priv->nent;
t->n = 0;
vf = &t->filter[0];
for (i = 0; i < HASHSIZE; i++) {
LIST_FOREACH(f, &priv->hashtable[i], next) {
vf->vlan = f->vlan;
strncpy(vf->hook, NG_HOOK_NAME(f->hook),
NG_HOOKSIZ);
vf++;
}
for (i = 0; i < (EVL_VLID_MASK + 1); i ++) {
hook = priv->vlan_hook[i];
if (hook == NULL || NG_HOOK_NOT_VALID(hook))
continue;
hook_data = (uintptr_t)NG_HOOK_PRIVATE(hook);
if (IS_HOOK_VLAN_SET(hook_data) == 0)
continue;
KASSERT(EVL_VLANOFTAG(hook_data) == i,
("%s: NGM_VLAN_GET_TABLE:"
" hook %s VID = %us, must be: %i\n",
__func__, NG_HOOK_NAME(hook),
(uint16_t)EVL_VLANOFTAG(hook_data), i));
#ifdef NG_VLAN_USE_OLD_VLAN_NAME
vf->vlan = i;
#endif
vf->vid = i;
vf->pcp = EVL_PRIOFTAG(hook_data);
vf->cfi = EVL_CFIOFTAG(hook_data);
strncpy(vf->hook_name,
NG_HOOK_NAME(hook), NG_HOOKSIZ);
vf ++;
t->n ++;
}
break;
default: /* Unknown command. */
case NGM_VLAN_GET_DECAP:
NG_MKRESPONSE(resp, msg, sizeof(uint32_t), M_NOWAIT);
if (resp == NULL) {
error = ENOMEM;
break;
}
(*((uint32_t *)resp->data)) = priv->decap_enable;
break;
case NGM_VLAN_SET_DECAP:
if (msg->header.arglen != sizeof(uint32_t)) {
error = EINVAL;
break;
}
priv->decap_enable = (*((uint32_t *)msg->data));
break;
case NGM_VLAN_GET_ENCAP:
NG_MKRESPONSE(resp, msg, sizeof(uint32_t), M_NOWAIT);
if (resp == NULL) {
error = ENOMEM;
break;
}
(*((uint32_t *)resp->data)) = priv->encap_enable;
break;
case NGM_VLAN_SET_ENCAP:
if (msg->header.arglen != sizeof(uint32_t)) {
error = EINVAL;
break;
}
priv->encap_enable = (*((uint32_t *)msg->data));
break;
case NGM_VLAN_GET_ENCAP_PROTO:
NG_MKRESPONSE(resp, msg, sizeof(uint16_t), M_NOWAIT);
if (resp == NULL) {
error = ENOMEM;
break;
}
(*((uint16_t *)resp->data)) = ntohs(priv->encap_proto);
break;
case NGM_VLAN_SET_ENCAP_PROTO:
if (msg->header.arglen != sizeof(uint16_t)) {
error = EINVAL;
break;
}
priv->encap_proto = htons((*((uint16_t *)msg->data)));
break;
default: /* Unknown command. */
error = EINVAL;
break;
}
@ -300,8 +478,6 @@ ng_vlan_rcvmsg(node_p node, item_p item, hook_p lasthook)
case NGM_FLOW_COOKIE:
{
struct ng_mesg *copy;
struct filterhead *chain;
struct filter *f;
/*
* Flow control messages should come only
@ -312,20 +488,20 @@ ng_vlan_rcvmsg(node_p node, item_p item, hook_p lasthook)
break;
if (lasthook != priv->downstream_hook)
break;
/* Broadcast the event to all uplinks. */
for (i = 0, chain = priv->hashtable; i < HASHSIZE;
i++, chain++)
LIST_FOREACH(f, chain, next) {
for (i = 0; i < (EVL_VLID_MASK + 1); i ++) {
if (priv->vlan_hook[i] == NULL)
continue;
NG_COPYMESSAGE(copy, msg, M_NOWAIT);
if (copy == NULL)
continue;
NG_SEND_MSG_HOOK(error, node, copy, f->hook, 0);
NG_SEND_MSG_HOOK(error, node, copy,
priv->vlan_hook[i], 0);
}
break;
}
default: /* Unknown type cookie. */
default: /* Unknown type cookie. */
error = EINVAL;
break;
}
@ -339,93 +515,163 @@ ng_vlan_rcvdata(hook_p hook, item_p item)
{
const priv_p priv = NG_NODE_PRIVATE(NG_HOOK_NODE(hook));
struct ether_header *eh;
struct ether_vlan_header *evl = NULL;
struct ether_vlan_header *evl;
int error;
u_int16_t vlan;
uintptr_t hook_data;
uint16_t vid, eth_vtag;
struct mbuf *m;
struct filter *f;
hook_p dst_hook;
NGI_GET_M(item, m);
/* Make sure we have an entire header. */
NGI_GET_M(item, m);
if (m->m_len < sizeof(*eh) &&
(m = m_pullup(m, sizeof(*eh))) == NULL) {
NG_FREE_ITEM(item);
return (EINVAL);
}
error = m_chk(&m, ETHER_HDR_LEN);
if (error != 0)
goto mchk_err;
eh = mtod(m, struct ether_header *);
if (hook == priv->downstream_hook) {
/*
* If from downstream, select between a match hook
* or the nomatch hook.
*/
if (m->m_flags & M_VLANTAG ||
eh->ether_type == htons(ETHERTYPE_VLAN)) {
if (m->m_flags & M_VLANTAG) {
/*
* Packet is tagged, m contains a normal
* Ethernet frame; tag is stored out-of-band.
*/
vlan = EVL_VLANOFTAG(m->m_pkthdr.ether_vtag);
} else {
if (m->m_len < sizeof(*evl) &&
(m = m_pullup(m, sizeof(*evl))) == NULL) {
NG_FREE_ITEM(item);
return (EINVAL);
}
evl = mtod(m, struct ether_vlan_header *);
vlan = EVL_VLANOFTAG(ntohs(evl->evl_tag));
dst_hook = priv->nomatch_hook;
/* Skip packets without tag. */
if ((m->m_flags & M_VLANTAG) == 0 &&
eh->ether_type != priv->encap_proto) {
if (dst_hook == NULL)
goto net_down;
goto send_packet;
}
/* Process packets with tag. */
if (m->m_flags & M_VLANTAG) {
/*
* Packet is tagged, m contains a normal
* Ethernet frame; tag is stored out-of-band.
*/
evl = NULL;
vid = EVL_VLANOFTAG(m->m_pkthdr.ether_vtag);
} else { /* eh->ether_type == priv->encap_proto */
error = m_chk(&m, ETHER_VLAN_HDR_LEN);
if (error != 0)
goto mchk_err;
evl = mtod(m, struct ether_vlan_header *);
vid = EVL_VLANOFTAG(ntohs(evl->evl_tag));
}
if (priv->vlan_hook[vid] != NULL) {
/*
* VLAN filter: allways remove vlan tags and
* decapsulate packet.
*/
dst_hook = priv->vlan_hook[vid];
if (evl == NULL) { /* m->m_flags & M_VLANTAG */
m->m_pkthdr.ether_vtag = 0;
m->m_flags &= ~M_VLANTAG;
goto send_packet;
}
if ((f = ng_vlan_findentry(priv, vlan)) != NULL) {
if (m->m_flags & M_VLANTAG) {
m->m_pkthdr.ether_vtag = 0;
m->m_flags &= ~M_VLANTAG;
} else {
evl->evl_encap_proto = evl->evl_proto;
bcopy(mtod(m, caddr_t),
mtod(m, caddr_t) +
ETHER_VLAN_ENCAP_LEN,
ETHER_HDR_LEN);
m_adj(m, ETHER_VLAN_ENCAP_LEN);
}
}
} else
f = NULL;
if (f != NULL)
NG_FWD_NEW_DATA(error, item, f->hook, m);
else
NG_FWD_NEW_DATA(error, item, priv->nomatch_hook, m);
} else { /* nomatch_hook */
if (dst_hook == NULL)
goto net_down;
if (evl == NULL || priv->decap_enable == 0)
goto send_packet;
/* Save tag out-of-band. */
m->m_pkthdr.ether_vtag = ntohs(evl->evl_tag);
m->m_flags |= M_VLANTAG;
}
/*
* Decapsulate:
* TPID = ether type encap
* Move DstMAC and SrcMAC to ETHER_TYPE.
* Before:
* [dmac] [smac] [TPID] [PCP/CFI/VID] [ether_type] [payload]
* |-----------| >>>>>>>>>>>>>>>>>>>> |--------------------|
* After:
* [free space ] [dmac] [smac] [ether_type] [payload]
* |-----------| |--------------------|
*/
bcopy((char *)evl, ((char *)evl + ETHER_VLAN_ENCAP_LEN),
(ETHER_ADDR_LEN * 2));
m_adj(m, ETHER_VLAN_ENCAP_LEN);
} else {
/*
* It is heading towards the downstream.
* If from nomatch, pass it unmodified.
* Otherwise, do the VLAN encapsulation.
*/
if (hook != priv->nomatch_hook) {
if ((f = NG_HOOK_PRIVATE(hook)) == NULL) {
NG_FREE_ITEM(item);
NG_FREE_M(m);
return (EOPNOTSUPP);
dst_hook = priv->downstream_hook;
if (dst_hook == NULL)
goto net_down;
if (hook != priv->nomatch_hook) {/* Filter hook. */
hook_data = (uintptr_t)NG_HOOK_PRIVATE(hook);
if (IS_HOOK_VLAN_SET(hook_data) == 0) {
/*
* Packet from hook not in filter
* call addfilter for this hook to fix.
*/
error = EOPNOTSUPP;
goto drop;
}
M_PREPEND(m, ETHER_VLAN_ENCAP_LEN, M_DONTWAIT);
/* M_PREPEND takes care of m_len and m_pkthdr.len. */
if (m == NULL || (m->m_len < sizeof(*evl) &&
(m = m_pullup(m, sizeof(*evl))) == NULL)) {
NG_FREE_ITEM(item);
return (ENOMEM);
eth_vtag = (hook_data & VLAN_TAG_MASK);
if ((priv->encap_enable & VLAN_ENCAP_FROM_FILTER) == 0) {
/* Just set packet header tag and send. */
m->m_flags |= M_VLANTAG;
m->m_pkthdr.ether_vtag = eth_vtag;
goto send_packet;
}
/*
* Transform the Ethernet header into an Ethernet header
* with 802.1Q encapsulation.
*/
bcopy(mtod(m, char *) + ETHER_VLAN_ENCAP_LEN,
mtod(m, char *), ETHER_HDR_LEN);
evl = mtod(m, struct ether_vlan_header *);
evl->evl_proto = evl->evl_encap_proto;
evl->evl_encap_proto = htons(ETHERTYPE_VLAN);
evl->evl_tag = htons(f->vlan);
} else { /* nomatch_hook */
if ((priv->encap_enable & VLAN_ENCAP_FROM_NOMATCH) == 0 ||
(m->m_flags & M_VLANTAG) == 0)
goto send_packet;
/* Encapsulate tagged packet. */
eth_vtag = m->m_pkthdr.ether_vtag;
m->m_pkthdr.ether_vtag = 0;
m->m_flags &= ~M_VLANTAG;
}
NG_FWD_NEW_DATA(error, item, priv->downstream_hook, m);
/*
* Transform the Ethernet header into an Ethernet header
* with 802.1Q encapsulation.
* Mod of: ether_vlanencap.
*
* TPID = ether type encap
* Move DstMAC and SrcMAC from ETHER_TYPE.
* Before:
* [free space ] [dmac] [smac] [ether_type] [payload]
* <<<<<<<<<<<<< |-----------| |--------------------|
* After:
* [dmac] [smac] [TPID] [PCP/CFI/VID] [ether_type] [payload]
* |-----------| |-- inserted tag --| |--------------------|
*/
M_PREPEND(m, ETHER_VLAN_ENCAP_LEN, M_DONTWAIT);
if (m == NULL)
error = ENOMEM;
else
error = m_chk(&m, ETHER_VLAN_HDR_LEN);
if (error != 0)
goto mchk_err;
evl = mtod(m, struct ether_vlan_header *);
bcopy(((char *)evl + ETHER_VLAN_ENCAP_LEN),
(char *)evl, (ETHER_ADDR_LEN * 2));
evl->evl_encap_proto = priv->encap_proto;
evl->evl_tag = htons(eth_vtag);
}
send_packet:
NG_FWD_NEW_DATA(error, item, dst_hook, m);
return (error);
net_down:
error = ENETDOWN;
drop:
m_freem(m);
mchk_err:
NG_FREE_ITEM(item);
return (error);
}
@ -444,7 +690,7 @@ static int
ng_vlan_disconnect(hook_p hook)
{
const priv_p priv = NG_NODE_PRIVATE(NG_HOOK_NODE(hook));
struct filter *f;
uintptr_t hook_data;
if (hook == priv->downstream_hook)
priv->downstream_hook = NULL;
@ -452,11 +698,9 @@ ng_vlan_disconnect(hook_p hook)
priv->nomatch_hook = NULL;
else {
/* Purge a rule that refers to this hook. */
if ((f = NG_HOOK_PRIVATE(hook)) != NULL) {
LIST_REMOVE(f, next);
priv->nent--;
free(f, M_NETGRAPH);
}
hook_data = (uintptr_t)NG_HOOK_PRIVATE(hook);
if (IS_HOOK_VLAN_SET(hook_data))
priv->vlan_hook[EVL_VLANOFTAG(hook_data)] = NULL;
}
NG_HOOK_SET_PRIVATE(hook, NULL);
if ((NG_NODE_NUMHOOKS(NG_HOOK_NODE(hook)) == 0) &&

45
sys/netgraph/ng_vlan.h
View File

@ -1,5 +1,6 @@
/*-
* Copyright (c) 2003 IPNET Internet Communication Company
* Copyright (c) 2011 - 2012 Rozhuk Ivan <rozhuk.im@gmail.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@ -31,6 +32,9 @@
#ifndef _NETGRAPH_NG_VLAN_H_
#define _NETGRAPH_NG_VLAN_H_
/* Using "vlan" in addfilter and gettable messages. 2012.01 */
#define NG_VLAN_USE_OLD_VLAN_NAME 1
/* Node type name and magic cookie. */
#define NG_VLAN_NODE_TYPE "vlan"
#define NGM_VLAN_COOKIE 1068486472
@ -43,21 +47,50 @@
enum {
NGM_VLAN_ADD_FILTER = 1,
NGM_VLAN_DEL_FILTER,
NGM_VLAN_GET_TABLE
NGM_VLAN_GET_TABLE,
NGM_VLAN_DEL_VID_FLT,
NGM_VLAN_GET_DECAP,
NGM_VLAN_SET_DECAP,
NGM_VLAN_GET_ENCAP,
NGM_VLAN_SET_ENCAP,
NGM_VLAN_GET_ENCAP_PROTO,
NGM_VLAN_SET_ENCAP_PROTO,
};
#define VLAN_ENCAP_FROM_FILTER 0x00000001
#define VLAN_ENCAP_FROM_NOMATCH 0x00000002
/* For NGM_VLAN_ADD_FILTER control message. */
struct ng_vlan_filter {
char hook[NG_HOOKSIZ];
u_int16_t vlan;
};
char hook_name[NG_HOOKSIZ];
#ifdef NG_VLAN_USE_OLD_VLAN_NAME
uint16_t vlan; /* VLAN - same as vid, oldname, deprecated. */
#endif
uint16_t vid; /* VID - VLAN Identifier. */
uint8_t pcp; /* PCP - Priority Code Point. */
uint8_t cfi; /* CFI - Canonical Format Indicator. */
};
/* Keep this in sync with the above structure definition. */
#ifdef NG_VLAN_USE_OLD_VLAN_NAME
#define NG_VLAN_FILTER_FIELDS { \
{ "hook", &ng_parse_hookbuf_type }, \
{ "vlan", &ng_parse_uint16_type }, \
{ "hook", &ng_parse_hookbuf_type }, \
{ "vlan", &ng_parse_uint16_type }, \
{ "vid", &ng_parse_uint16_type }, \
{ "pcp", &ng_parse_uint8_type }, \
{ "cfi", &ng_parse_uint8_type }, \
{ NULL } \
}
#else
#define NG_VLAN_FILTER_FIELDS { \
{ "hook", &ng_parse_hookbuf_type }, \
{ "vid", &ng_parse_uint16_type }, \
{ "pcp", &ng_parse_uint8_type }, \
{ "cfi", &ng_parse_uint8_type }, \
{ NULL } \
}
#endif
/* Structure returned by NGM_VLAN_GET_TABLE. */
struct ng_vlan_table {