610 lines
16 KiB
C
610 lines
16 KiB
C
/*
|
|
* ng_one2many.c
|
|
*/
|
|
|
|
/*-
|
|
* Copyright (c) 2000 Whistle Communications, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* Subject to the following obligations and disclaimer of warranty, use and
|
|
* redistribution of this software, in source or object code forms, with or
|
|
* without modifications are expressly permitted by Whistle Communications;
|
|
* provided, however, that:
|
|
* 1. Any and all reproductions of the source or object code must include the
|
|
* copyright notice above and the following disclaimer of warranties; and
|
|
* 2. No rights are granted, in any manner or form, to use Whistle
|
|
* Communications, Inc. trademarks, including the mark "WHISTLE
|
|
* COMMUNICATIONS" on advertising, endorsements, or otherwise except as
|
|
* such appears in the above copyright notice or in the software.
|
|
*
|
|
* THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND
|
|
* TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO
|
|
* REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE,
|
|
* INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
|
|
* WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY
|
|
* REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS
|
|
* SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.
|
|
* IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES
|
|
* RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING
|
|
* WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
|
|
* PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
* SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY
|
|
* OF SUCH DAMAGE.
|
|
*
|
|
* Author: Archie Cobbs <archie@freebsd.org>
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
/*
|
|
* ng_one2many(4) netgraph node type
|
|
*
|
|
* Packets received on the "one" hook are sent out each of the
|
|
* "many" hooks accoring to an algorithm. Packets received on any
|
|
* "many" hook are always delivered to the "one" hook.
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/ctype.h>
|
|
#include <sys/mbuf.h>
|
|
#include <sys/errno.h>
|
|
|
|
#include <netgraph/ng_message.h>
|
|
#include <netgraph/netgraph.h>
|
|
#include <netgraph/ng_parse.h>
|
|
#include <netgraph/ng_one2many.h>
|
|
|
|
/* Per-link private data */
|
|
struct ng_one2many_link {
|
|
hook_p hook; /* netgraph hook */
|
|
struct ng_one2many_link_stats stats; /* link stats */
|
|
};
|
|
|
|
/* Per-node private data */
|
|
struct ng_one2many_private {
|
|
node_p node; /* link to node */
|
|
struct ng_one2many_config conf; /* node configuration */
|
|
struct ng_one2many_link one; /* "one" hook */
|
|
struct ng_one2many_link many[NG_ONE2MANY_MAX_LINKS];
|
|
u_int16_t nextMany; /* next round-robin */
|
|
u_int16_t numActiveMany; /* # active "many" */
|
|
u_int16_t activeMany[NG_ONE2MANY_MAX_LINKS];
|
|
};
|
|
typedef struct ng_one2many_private *priv_p;
|
|
|
|
/* Netgraph node methods */
|
|
static ng_constructor_t ng_one2many_constructor;
|
|
static ng_rcvmsg_t ng_one2many_rcvmsg;
|
|
static ng_shutdown_t ng_one2many_shutdown;
|
|
static ng_newhook_t ng_one2many_newhook;
|
|
static ng_rcvdata_t ng_one2many_rcvdata;
|
|
static ng_disconnect_t ng_one2many_disconnect;
|
|
|
|
/* Other functions */
|
|
static void ng_one2many_update_many(priv_p priv);
|
|
static void ng_one2many_notify(priv_p priv, uint32_t cmd);
|
|
|
|
/******************************************************************
|
|
NETGRAPH PARSE TYPES
|
|
******************************************************************/
|
|
|
|
/* Parse type for struct ng_one2many_config */
|
|
static const struct ng_parse_fixedarray_info
|
|
ng_one2many_enableLinks_array_type_info = {
|
|
&ng_parse_uint8_type,
|
|
NG_ONE2MANY_MAX_LINKS
|
|
};
|
|
static const struct ng_parse_type ng_one2many_enableLinks_array_type = {
|
|
&ng_parse_fixedarray_type,
|
|
&ng_one2many_enableLinks_array_type_info,
|
|
};
|
|
static const struct ng_parse_struct_field ng_one2many_config_type_fields[]
|
|
= NG_ONE2MANY_CONFIG_TYPE_INFO(&ng_one2many_enableLinks_array_type);
|
|
static const struct ng_parse_type ng_one2many_config_type = {
|
|
&ng_parse_struct_type,
|
|
&ng_one2many_config_type_fields
|
|
};
|
|
|
|
/* Parse type for struct ng_one2many_link_stats */
|
|
static const struct ng_parse_struct_field ng_one2many_link_stats_type_fields[]
|
|
= NG_ONE2MANY_LINK_STATS_TYPE_INFO;
|
|
static const struct ng_parse_type ng_one2many_link_stats_type = {
|
|
&ng_parse_struct_type,
|
|
&ng_one2many_link_stats_type_fields
|
|
};
|
|
|
|
/* List of commands and how to convert arguments to/from ASCII */
|
|
static const struct ng_cmdlist ng_one2many_cmdlist[] = {
|
|
{
|
|
NGM_ONE2MANY_COOKIE,
|
|
NGM_ONE2MANY_SET_CONFIG,
|
|
"setconfig",
|
|
&ng_one2many_config_type,
|
|
NULL
|
|
},
|
|
{
|
|
NGM_ONE2MANY_COOKIE,
|
|
NGM_ONE2MANY_GET_CONFIG,
|
|
"getconfig",
|
|
NULL,
|
|
&ng_one2many_config_type
|
|
},
|
|
{
|
|
NGM_ONE2MANY_COOKIE,
|
|
NGM_ONE2MANY_GET_STATS,
|
|
"getstats",
|
|
&ng_parse_int32_type,
|
|
&ng_one2many_link_stats_type
|
|
},
|
|
{
|
|
NGM_ONE2MANY_COOKIE,
|
|
NGM_ONE2MANY_CLR_STATS,
|
|
"clrstats",
|
|
&ng_parse_int32_type,
|
|
NULL,
|
|
},
|
|
{
|
|
NGM_ONE2MANY_COOKIE,
|
|
NGM_ONE2MANY_GETCLR_STATS,
|
|
"getclrstats",
|
|
&ng_parse_int32_type,
|
|
&ng_one2many_link_stats_type
|
|
},
|
|
{ 0 }
|
|
};
|
|
|
|
/* Node type descriptor */
|
|
static struct ng_type ng_one2many_typestruct = {
|
|
.version = NG_ABI_VERSION,
|
|
.name = NG_ONE2MANY_NODE_TYPE,
|
|
.constructor = ng_one2many_constructor,
|
|
.rcvmsg = ng_one2many_rcvmsg,
|
|
.shutdown = ng_one2many_shutdown,
|
|
.newhook = ng_one2many_newhook,
|
|
.rcvdata = ng_one2many_rcvdata,
|
|
.disconnect = ng_one2many_disconnect,
|
|
.cmdlist = ng_one2many_cmdlist,
|
|
};
|
|
NETGRAPH_INIT(one2many, &ng_one2many_typestruct);
|
|
|
|
/******************************************************************
|
|
NETGRAPH NODE METHODS
|
|
******************************************************************/
|
|
|
|
/*
|
|
* Node constructor
|
|
*/
|
|
static int
|
|
ng_one2many_constructor(node_p node)
|
|
{
|
|
priv_p priv;
|
|
|
|
/* Allocate and initialize private info */
|
|
MALLOC(priv, priv_p, sizeof(*priv), M_NETGRAPH, M_NOWAIT | M_ZERO);
|
|
if (priv == NULL)
|
|
return (ENOMEM);
|
|
priv->conf.xmitAlg = NG_ONE2MANY_XMIT_ROUNDROBIN;
|
|
priv->conf.failAlg = NG_ONE2MANY_FAIL_MANUAL;
|
|
|
|
/* cross reference */
|
|
NG_NODE_SET_PRIVATE(node, priv);
|
|
priv->node = node;
|
|
|
|
/* Done */
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Method for attaching a new hook
|
|
*/
|
|
static int
|
|
ng_one2many_newhook(node_p node, hook_p hook, const char *name)
|
|
{
|
|
const priv_p priv = NG_NODE_PRIVATE(node);
|
|
struct ng_one2many_link *link;
|
|
int linkNum;
|
|
u_long i;
|
|
|
|
/* Which hook? */
|
|
if (strncmp(name, NG_ONE2MANY_HOOK_MANY_PREFIX,
|
|
strlen(NG_ONE2MANY_HOOK_MANY_PREFIX)) == 0) {
|
|
const char *cp;
|
|
char *eptr;
|
|
|
|
cp = name + strlen(NG_ONE2MANY_HOOK_MANY_PREFIX);
|
|
if (!isdigit(*cp) || (cp[0] == '0' && cp[1] != '\0'))
|
|
return (EINVAL);
|
|
i = strtoul(cp, &eptr, 10);
|
|
if (*eptr != '\0' || i < 0 || i >= NG_ONE2MANY_MAX_LINKS)
|
|
return (EINVAL);
|
|
linkNum = (int)i;
|
|
link = &priv->many[linkNum];
|
|
} else if (strcmp(name, NG_ONE2MANY_HOOK_ONE) == 0) {
|
|
linkNum = NG_ONE2MANY_ONE_LINKNUM;
|
|
link = &priv->one;
|
|
} else
|
|
return (EINVAL);
|
|
|
|
/* Is hook already connected? (should never happen) */
|
|
if (link->hook != NULL)
|
|
return (EISCONN);
|
|
|
|
/* Setup private info for this link */
|
|
NG_HOOK_SET_PRIVATE(hook, (void *)(intptr_t)linkNum);
|
|
link->hook = hook;
|
|
bzero(&link->stats, sizeof(link->stats));
|
|
if (linkNum != NG_ONE2MANY_ONE_LINKNUM) {
|
|
priv->conf.enabledLinks[linkNum] = 1; /* auto-enable link */
|
|
ng_one2many_update_many(priv);
|
|
}
|
|
|
|
/* Done */
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Receive a control message
|
|
*/
|
|
static int
|
|
ng_one2many_rcvmsg(node_p node, item_p item, hook_p lasthook)
|
|
{
|
|
const priv_p priv = NG_NODE_PRIVATE(node);
|
|
struct ng_mesg *resp = NULL;
|
|
int error = 0;
|
|
struct ng_mesg *msg;
|
|
|
|
NGI_GET_MSG(item, msg);
|
|
switch (msg->header.typecookie) {
|
|
case NGM_ONE2MANY_COOKIE:
|
|
switch (msg->header.cmd) {
|
|
case NGM_ONE2MANY_SET_CONFIG:
|
|
{
|
|
struct ng_one2many_config *conf;
|
|
int i;
|
|
|
|
/* Check that new configuration is valid */
|
|
if (msg->header.arglen != sizeof(*conf)) {
|
|
error = EINVAL;
|
|
break;
|
|
}
|
|
conf = (struct ng_one2many_config *)msg->data;
|
|
switch (conf->xmitAlg) {
|
|
case NG_ONE2MANY_XMIT_ROUNDROBIN:
|
|
case NG_ONE2MANY_XMIT_ALL:
|
|
break;
|
|
default:
|
|
error = EINVAL;
|
|
break;
|
|
}
|
|
switch (conf->failAlg) {
|
|
case NG_ONE2MANY_FAIL_MANUAL:
|
|
case NG_ONE2MANY_FAIL_NOTIFY:
|
|
break;
|
|
default:
|
|
error = EINVAL;
|
|
break;
|
|
}
|
|
if (error != 0)
|
|
break;
|
|
|
|
/* Normalized many link enabled bits */
|
|
for (i = 0; i < NG_ONE2MANY_MAX_LINKS; i++)
|
|
conf->enabledLinks[i] = !!conf->enabledLinks[i];
|
|
|
|
/* Copy config and reset */
|
|
bcopy(conf, &priv->conf, sizeof(*conf));
|
|
ng_one2many_update_many(priv);
|
|
break;
|
|
}
|
|
case NGM_ONE2MANY_GET_CONFIG:
|
|
{
|
|
struct ng_one2many_config *conf;
|
|
|
|
NG_MKRESPONSE(resp, msg, sizeof(*conf), M_NOWAIT);
|
|
if (resp == NULL) {
|
|
error = ENOMEM;
|
|
break;
|
|
}
|
|
conf = (struct ng_one2many_config *)resp->data;
|
|
bcopy(&priv->conf, conf, sizeof(priv->conf));
|
|
break;
|
|
}
|
|
case NGM_ONE2MANY_GET_STATS:
|
|
case NGM_ONE2MANY_CLR_STATS:
|
|
case NGM_ONE2MANY_GETCLR_STATS:
|
|
{
|
|
struct ng_one2many_link *link;
|
|
int linkNum;
|
|
|
|
/* Get link */
|
|
if (msg->header.arglen != sizeof(int32_t)) {
|
|
error = EINVAL;
|
|
break;
|
|
}
|
|
linkNum = *((int32_t *)msg->data);
|
|
if (linkNum == NG_ONE2MANY_ONE_LINKNUM)
|
|
link = &priv->one;
|
|
else if (linkNum >= 0
|
|
&& linkNum < NG_ONE2MANY_MAX_LINKS) {
|
|
link = &priv->many[linkNum];
|
|
} else {
|
|
error = EINVAL;
|
|
break;
|
|
}
|
|
|
|
/* Get/clear stats */
|
|
if (msg->header.cmd != NGM_ONE2MANY_CLR_STATS) {
|
|
NG_MKRESPONSE(resp, msg,
|
|
sizeof(link->stats), M_NOWAIT);
|
|
if (resp == NULL) {
|
|
error = ENOMEM;
|
|
break;
|
|
}
|
|
bcopy(&link->stats,
|
|
resp->data, sizeof(link->stats));
|
|
}
|
|
if (msg->header.cmd != NGM_ONE2MANY_GET_STATS)
|
|
bzero(&link->stats, sizeof(link->stats));
|
|
break;
|
|
}
|
|
default:
|
|
error = EINVAL;
|
|
break;
|
|
}
|
|
break;
|
|
/*
|
|
* One of our downstreams notifies us of link change. If we are
|
|
* configured to listen to these message, then we remove/add
|
|
* this hook from array of active hooks.
|
|
*/
|
|
case NGM_FLOW_COOKIE:
|
|
{
|
|
int linkNum;
|
|
|
|
if (priv->conf.failAlg != NG_ONE2MANY_FAIL_NOTIFY)
|
|
break;
|
|
|
|
if (lasthook == NULL)
|
|
break;
|
|
|
|
linkNum = (intptr_t)NG_HOOK_PRIVATE(lasthook);
|
|
if (linkNum == NG_ONE2MANY_ONE_LINKNUM)
|
|
break;
|
|
|
|
KASSERT((linkNum >= 0 && linkNum < NG_ONE2MANY_MAX_LINKS),
|
|
("%s: linkNum=%d", __func__, linkNum));
|
|
|
|
switch (msg->header.cmd) {
|
|
case NGM_LINK_IS_UP:
|
|
priv->conf.enabledLinks[linkNum] = 1;
|
|
ng_one2many_update_many(priv);
|
|
break;
|
|
case NGM_LINK_IS_DOWN:
|
|
priv->conf.enabledLinks[linkNum] = 0;
|
|
ng_one2many_update_many(priv);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
error = EINVAL;
|
|
break;
|
|
}
|
|
|
|
/* Done */
|
|
NG_RESPOND_MSG(error, node, item, resp);
|
|
NG_FREE_MSG(msg);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Receive data on a hook
|
|
*/
|
|
static int
|
|
ng_one2many_rcvdata(hook_p hook, item_p item)
|
|
{
|
|
const node_p node = NG_HOOK_NODE(hook);
|
|
const priv_p priv = NG_NODE_PRIVATE(node);
|
|
struct ng_one2many_link *src;
|
|
struct ng_one2many_link *dst = NULL;
|
|
int error = 0;
|
|
int linkNum;
|
|
int i;
|
|
struct mbuf *m;
|
|
|
|
m = NGI_M(item); /* just peaking, mbuf still owned by item */
|
|
/* Get link number */
|
|
linkNum = (intptr_t)NG_HOOK_PRIVATE(hook);
|
|
KASSERT(linkNum == NG_ONE2MANY_ONE_LINKNUM
|
|
|| (linkNum >= 0 && linkNum < NG_ONE2MANY_MAX_LINKS),
|
|
("%s: linkNum=%d", __func__, linkNum));
|
|
|
|
/* Figure out source link */
|
|
src = (linkNum == NG_ONE2MANY_ONE_LINKNUM) ?
|
|
&priv->one : &priv->many[linkNum];
|
|
KASSERT(src->hook != NULL, ("%s: no src%d", __func__, linkNum));
|
|
|
|
/* Update receive stats */
|
|
src->stats.recvPackets++;
|
|
src->stats.recvOctets += m->m_pkthdr.len;
|
|
|
|
/* Figure out destination link */
|
|
if (linkNum == NG_ONE2MANY_ONE_LINKNUM) {
|
|
if (priv->numActiveMany == 0) {
|
|
NG_FREE_ITEM(item);
|
|
return (ENOTCONN);
|
|
}
|
|
switch(priv->conf.xmitAlg) {
|
|
case NG_ONE2MANY_XMIT_ROUNDROBIN:
|
|
dst = &priv->many[priv->activeMany[priv->nextMany]];
|
|
priv->nextMany = (priv->nextMany + 1) % priv->numActiveMany;
|
|
break;
|
|
case NG_ONE2MANY_XMIT_ALL:
|
|
/* no need to copy data for the 1st one */
|
|
dst = &priv->many[priv->activeMany[0]];
|
|
|
|
/* make copies of data and send for all links
|
|
* except the first one, which we'll do last
|
|
*/
|
|
for (i = 1; i < priv->numActiveMany; i++) {
|
|
struct mbuf *m2;
|
|
struct ng_one2many_link *mdst;
|
|
|
|
mdst = &priv->many[priv->activeMany[i]];
|
|
m2 = m_dup(m, M_DONTWAIT); /* XXX m_copypacket() */
|
|
if (m2 == NULL) {
|
|
mdst->stats.memoryFailures++;
|
|
NG_FREE_ITEM(item);
|
|
NG_FREE_M(m);
|
|
return (ENOBUFS);
|
|
}
|
|
/* Update transmit stats */
|
|
mdst->stats.xmitPackets++;
|
|
mdst->stats.xmitOctets += m->m_pkthdr.len;
|
|
NG_SEND_DATA_ONLY(error, mdst->hook, m2);
|
|
}
|
|
break;
|
|
#ifdef INVARIANTS
|
|
default:
|
|
panic("%s: invalid xmitAlg", __func__);
|
|
#endif
|
|
}
|
|
} else {
|
|
dst = &priv->one;
|
|
}
|
|
|
|
/* Update transmit stats */
|
|
dst->stats.xmitPackets++;
|
|
dst->stats.xmitOctets += m->m_pkthdr.len;
|
|
|
|
/* Deliver packet */
|
|
NG_FWD_ITEM_HOOK(error, item, dst->hook);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Shutdown node
|
|
*/
|
|
static int
|
|
ng_one2many_shutdown(node_p node)
|
|
{
|
|
const priv_p priv = NG_NODE_PRIVATE(node);
|
|
|
|
KASSERT(priv->numActiveMany == 0,
|
|
("%s: numActiveMany=%d", __func__, priv->numActiveMany));
|
|
FREE(priv, M_NETGRAPH);
|
|
NG_NODE_SET_PRIVATE(node, NULL);
|
|
NG_NODE_UNREF(node);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Hook disconnection.
|
|
*/
|
|
static int
|
|
ng_one2many_disconnect(hook_p hook)
|
|
{
|
|
const priv_p priv = NG_NODE_PRIVATE(NG_HOOK_NODE(hook));
|
|
int linkNum;
|
|
|
|
/* Get link number */
|
|
linkNum = (intptr_t)NG_HOOK_PRIVATE(hook);
|
|
KASSERT(linkNum == NG_ONE2MANY_ONE_LINKNUM
|
|
|| (linkNum >= 0 && linkNum < NG_ONE2MANY_MAX_LINKS),
|
|
("%s: linkNum=%d", __func__, linkNum));
|
|
|
|
/* Nuke the link */
|
|
if (linkNum == NG_ONE2MANY_ONE_LINKNUM)
|
|
priv->one.hook = NULL;
|
|
else {
|
|
priv->many[linkNum].hook = NULL;
|
|
priv->conf.enabledLinks[linkNum] = 0;
|
|
ng_one2many_update_many(priv);
|
|
}
|
|
|
|
/* If no hooks left, go away */
|
|
if ((NG_NODE_NUMHOOKS(NG_HOOK_NODE(hook)) == 0)
|
|
&& (NG_NODE_IS_VALID(NG_HOOK_NODE(hook))))
|
|
ng_rmnode_self(NG_HOOK_NODE(hook));
|
|
return (0);
|
|
}
|
|
|
|
/******************************************************************
|
|
OTHER FUNCTIONS
|
|
******************************************************************/
|
|
|
|
/*
|
|
* Update internal state after the addition or removal of a "many" link
|
|
*/
|
|
static void
|
|
ng_one2many_update_many(priv_p priv)
|
|
{
|
|
uint16_t saveActive = priv->numActiveMany;
|
|
int linkNum;
|
|
|
|
/* Update list of which "many" links are up */
|
|
priv->numActiveMany = 0;
|
|
for (linkNum = 0; linkNum < NG_ONE2MANY_MAX_LINKS; linkNum++) {
|
|
switch (priv->conf.failAlg) {
|
|
case NG_ONE2MANY_FAIL_MANUAL:
|
|
case NG_ONE2MANY_FAIL_NOTIFY:
|
|
if (priv->many[linkNum].hook != NULL
|
|
&& priv->conf.enabledLinks[linkNum]) {
|
|
priv->activeMany[priv->numActiveMany] = linkNum;
|
|
priv->numActiveMany++;
|
|
}
|
|
break;
|
|
#ifdef INVARIANTS
|
|
default:
|
|
panic("%s: invalid failAlg", __func__);
|
|
#endif
|
|
}
|
|
}
|
|
|
|
if (priv->numActiveMany == 0 && saveActive > 0)
|
|
ng_one2many_notify(priv, NGM_LINK_IS_DOWN);
|
|
|
|
if (saveActive == 0 && priv->numActiveMany > 0)
|
|
ng_one2many_notify(priv, NGM_LINK_IS_UP);
|
|
|
|
/* Update transmit algorithm state */
|
|
switch (priv->conf.xmitAlg) {
|
|
case NG_ONE2MANY_XMIT_ROUNDROBIN:
|
|
if (priv->numActiveMany > 0)
|
|
priv->nextMany %= priv->numActiveMany;
|
|
break;
|
|
case NG_ONE2MANY_XMIT_ALL:
|
|
break;
|
|
#ifdef INVARIANTS
|
|
default:
|
|
panic("%s: invalid xmitAlg", __func__);
|
|
#endif
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Notify upstream if we are out of links, or we have at least one link.
|
|
*/
|
|
static void
|
|
ng_one2many_notify(priv_p priv, uint32_t cmd)
|
|
{
|
|
struct ng_mesg *msg;
|
|
int dummy_error = 0;
|
|
|
|
if (priv->one.hook == NULL)
|
|
return;
|
|
|
|
NG_MKMESSAGE(msg, NGM_FLOW_COOKIE, cmd, 0, M_NOWAIT);
|
|
if (msg != NULL)
|
|
NG_SEND_MSG_HOOK(dummy_error, priv->node, msg, priv->one.hook, 0);
|
|
}
|