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pimd: pim upstream child list

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Add the ability to keep the list of S,G's associated with
a *,G.

Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
This commit is contained in:
Donald Sharp 2016-10-23 22:47:25 -04:00
parent 2a333e0f22
commit 03417ccd6d
4 changed files with 149 additions and 135 deletions
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78
pimd/pim_ifchannel.c
View File

@ -807,26 +807,23 @@ void pim_ifchannel_local_membership_add(struct interface *ifp,
struct pim_upstream *child;
struct listnode *up_node;
for (ALL_LIST_ELEMENTS_RO (pim_upstream_list, up_node, child))
for (ALL_LIST_ELEMENTS_RO (up->sources, up_node, child))
{
if (child->parent == up)
{
if (PIM_DEBUG_EVENTS)
{
char buff[100];
if (PIM_DEBUG_EVENTS)
{
char buff[100];
strcpy (buff, pim_str_sg_dump (&up->sg));
zlog_debug("%s %s: IGMP (S,G)=%s(%s) from %s",
__FILE__, __PRETTY_FUNCTION__,
buff, ifp->name, pim_str_sg_dump (sg));
}
strcpy (buff, pim_str_sg_dump (&child->sg));
zlog_debug("%s %s: IGMP (S,G)=%s(%s) from %s",
__FILE__, __PRETTY_FUNCTION__,
buff, ifp->name, pim_str_sg_dump (sg));
}
if (pim_upstream_evaluate_join_desired (child))
{
pim_channel_add_oif (child->channel_oil, ifp, PIM_OIF_FLAG_PROTO_PIM);
pim_upstream_switch (child, PIM_UPSTREAM_JOINED);
}
}
if (pim_upstream_evaluate_join_desired (child))
{
pim_channel_add_oif (child->channel_oil, ifp, PIM_OIF_FLAG_PROTO_PIM);
pim_upstream_switch (child, PIM_UPSTREAM_JOINED);
}
}
}
}
@ -856,34 +853,31 @@ void pim_ifchannel_local_membership_del(struct interface *ifp,
struct pim_upstream *child;
struct listnode *up_node;
for (ALL_LIST_ELEMENTS_RO (pim_upstream_list, up_node, child))
for (ALL_LIST_ELEMENTS_RO (up->sources, up_node, child))
{
if (child->parent == up)
{
struct channel_oil *c_oil = child->channel_oil;
struct pim_ifchannel *chchannel = pim_ifchannel_find (ifp, &child->sg);
struct pim_interface *pim_ifp = ifp->info;
struct channel_oil *c_oil = child->channel_oil;
struct pim_ifchannel *chchannel = pim_ifchannel_find (ifp, &child->sg);
struct pim_interface *pim_ifp = ifp->info;
if (PIM_DEBUG_EVENTS)
{
char buff[100];
strcpy (buff, pim_str_sg_dump (&up->sg));
zlog_debug("%s %s: Prune(S,G)=%s(%s) from %s",
__FILE__, __PRETTY_FUNCTION__,
buff, ifp->name, pim_str_sg_dump (&child->sg));
}
if (!pim_upstream_evaluate_join_desired (child))
pim_channel_del_oif (c_oil, ifp, PIM_OIF_FLAG_PROTO_PIM);
/*
* If the S,G has no if channel and the c_oil still
* has output here then the *,G was supplying the implied
* if channel. So remove it.
*/
if (!chchannel && c_oil->oil.mfcc_ttls[pim_ifp->mroute_vif_index])
pim_channel_del_oif (c_oil, ifp, PIM_OIF_FLAG_PROTO_PIM);
if (PIM_DEBUG_EVENTS)
{
char buff[100];
strcpy (buff, pim_str_sg_dump (&child->sg));
zlog_debug("%s %s: Prune(S,G)=%s(%s) from %s",
__FILE__, __PRETTY_FUNCTION__,
buff, ifp->name, pim_str_sg_dump (&child->sg));
}
if (!pim_upstream_evaluate_join_desired (child))
pim_channel_del_oif (c_oil, ifp, PIM_OIF_FLAG_PROTO_PIM);
/*
* If the S,G has no if channel and the c_oil still
* has output here then the *,G was supplying the implied
* if channel. So remove it.
*/
if (!chchannel && c_oil->oil.mfcc_ttls[pim_ifp->mroute_vif_index])
pim_channel_del_oif (c_oil, ifp, PIM_OIF_FLAG_PROTO_PIM);
}
}
delete_on_noinfo(ch);

78
pimd/pim_join.c
View File

@ -117,24 +117,21 @@ static void recv_join(struct interface *ifp,
if (!up)
return;
for (ALL_LIST_ELEMENTS_RO (pim_upstream_list, up_node, child))
for (ALL_LIST_ELEMENTS_RO (up->sources, up_node, child))
{
if (child->parent == up)
{
char buff[100];
char buff[100];
strcpy (buff, pim_str_sg_dump (&up->sg));
if (PIM_DEBUG_PIM_TRACE)
zlog_debug("%s %s: Join(S,G)=%s from %s",
__FILE__, __PRETTY_FUNCTION__,
buff, pim_str_sg_dump (&sg));
strcpy (buff, pim_str_sg_dump (&child->sg));
if (PIM_DEBUG_PIM_TRACE)
zlog_debug("%s %s: Join(S,G)=%s from %s",
__FILE__, __PRETTY_FUNCTION__,
buff, pim_str_sg_dump (&sg));
if (pim_upstream_evaluate_join_desired (child))
{
pim_channel_add_oif (child->channel_oil, ifp, PIM_OIF_FLAG_PROTO_PIM);
pim_upstream_switch (child, PIM_UPSTREAM_JOINED);
}
}
if (pim_upstream_evaluate_join_desired (child))
{
pim_channel_add_oif (child->channel_oil, ifp, PIM_OIF_FLAG_PROTO_PIM);
pim_upstream_switch (child, PIM_UPSTREAM_JOINED);
}
}
}
@ -194,36 +191,33 @@ static void recv_prune(struct interface *ifp,
if (!up)
return;
for (ALL_LIST_ELEMENTS_RO (pim_upstream_list, up_node, child))
for (ALL_LIST_ELEMENTS_RO (up->sources, up_node, child))
{
if (child->parent == up)
{
struct channel_oil *c_oil = child->channel_oil;
struct pim_ifchannel *ch = pim_ifchannel_find (ifp, &child->sg);
struct pim_interface *pim_ifp = ifp->info;
struct channel_oil *c_oil = child->channel_oil;
struct pim_ifchannel *ch = pim_ifchannel_find (ifp, &child->sg);
struct pim_interface *pim_ifp = ifp->info;
if (PIM_DEBUG_PIM_TRACE)
{
char buff[100];
strcpy (buff, pim_str_sg_dump (&up->sg));
zlog_debug("%s %s: Prune(S,G)=%s from %s",
__FILE__, __PRETTY_FUNCTION__,
buff, pim_str_sg_dump (&child->sg));
}
if (!c_oil)
continue;
if (!pim_upstream_evaluate_join_desired (child))
pim_channel_del_oif (c_oil, ifp, PIM_OIF_FLAG_PROTO_PIM);
/*
* If the S,G has no if channel and the c_oil still
* has output here then the *,G was supplying the implied
* if channel. So remove it.
*/
if (!ch && c_oil->oil.mfcc_ttls[pim_ifp->mroute_vif_index])
pim_channel_del_oif (c_oil, ifp, PIM_OIF_FLAG_PROTO_PIM);
if (PIM_DEBUG_PIM_TRACE)
{
char buff[100];
strcpy (buff, pim_str_sg_dump (&child->sg));
zlog_debug("%s %s: Prune(S,G)=%s from %s",
__FILE__, __PRETTY_FUNCTION__,
buff, pim_str_sg_dump (&sg));
}
if (!c_oil)
continue;
if (!pim_upstream_evaluate_join_desired (child))
pim_channel_del_oif (c_oil, ifp, PIM_OIF_FLAG_PROTO_PIM);
/*
* If the S,G has no if channel and the c_oil still
* has output here then the *,G was supplying the implied
* if channel. So remove it.
*/
if (!ch && c_oil->oil.mfcc_ttls[pim_ifp->mroute_vif_index])
pim_channel_del_oif (c_oil, ifp, PIM_OIF_FLAG_PROTO_PIM);
}
}
}

127
pimd/pim_upstream.c
View File

@ -65,23 +65,16 @@ static void pim_upstream_update_assert_tracking_desired(struct pim_upstream *up)
static void
pim_upstream_remove_children (struct pim_upstream *up)
{
struct listnode *ch_node;
struct pim_upstream *child;
// Basic sanity, (*,*) not currently supported
if ((up->sg.src.s_addr == INADDR_ANY) &&
(up->sg.grp.s_addr == INADDR_ANY))
if (!up->sources)
return;
// Basic sanity (S,G) have no children
if ((up->sg.src.s_addr != INADDR_ANY) &&
(up->sg.grp.s_addr != INADDR_ANY))
return;
for (ALL_LIST_ELEMENTS_RO (pim_upstream_list, ch_node, child))
while (!list_isempty (up->sources))
{
if (child->parent == up)
child->parent = NULL;
child = listnode_head (up->sources);
child->parent = NULL;
listnode_delete (up->sources, child);
}
}
@ -109,7 +102,10 @@ pim_upstream_find_new_children (struct pim_upstream *up)
if ((up->sg.grp.s_addr != INADDR_ANY) &&
(child->sg.grp.s_addr == up->sg.grp.s_addr) &&
(child != up))
child->parent = up;
{
child->parent = up;
listnode_add_sort (up->sources, child);
}
}
}
@ -119,28 +115,25 @@ pim_upstream_find_new_children (struct pim_upstream *up)
* If we have a (*,G), find the (*,*)
*/
static struct pim_upstream *
pim_upstream_find_parent (struct prefix_sg *sg)
pim_upstream_find_parent (struct pim_upstream *child)
{
struct prefix_sg any = *sg;
// (*,*) || (S,*)
if (((sg->src.s_addr == INADDR_ANY) &&
(sg->grp.s_addr == INADDR_ANY)) ||
((sg->src.s_addr != INADDR_ANY) &&
(sg->grp.s_addr == INADDR_ANY)))
return NULL;
struct prefix_sg any = child->sg;
struct pim_upstream *up = NULL;
// (S,G)
if ((sg->src.s_addr != INADDR_ANY) &&
(sg->grp.s_addr != INADDR_ANY))
if ((child->sg.src.s_addr != INADDR_ANY) &&
(child->sg.grp.s_addr != INADDR_ANY))
{
any.src.s_addr = INADDR_ANY;
return pim_upstream_find (&any);
up = pim_upstream_find (&any);
if (up)
listnode_add (up->sources, child);
return up;
}
// (*,G)
any.grp.s_addr = INADDR_ANY;
return pim_upstream_find (&any);
return NULL;
}
void pim_upstream_free(struct pim_upstream *up)
@ -181,11 +174,20 @@ pim_upstream_del(struct pim_upstream *up, const char *name)
pim_mroute_del (up->channel_oil);
upstream_channel_oil_detach(up);
if (up->sources)
list_delete (up->sources);
up->sources = NULL;
/*
notice that listnode_delete() can't be moved
into pim_upstream_free() because the later is
called by list_delete_all_node()
*/
if (up->parent)
{
listnode_delete (up->parent->sources, up);
up->parent = NULL;
}
listnode_delete (pim_upstream_list, up);
hash_release (pim_upstream_hash, up);
@ -488,6 +490,27 @@ pim_upstream_switch(struct pim_upstream *up,
}
}
static int
pim_upstream_compare (void *arg1, void *arg2)
{
const struct pim_upstream *up1 = (const struct pim_upstream *)arg1;
const struct pim_upstream *up2 = (const struct pim_upstream *)arg2;
if (ntohl(up1->sg.grp.s_addr) < ntohl(up2->sg.grp.s_addr))
return -1;
if (ntohl(up1->sg.grp.s_addr) > ntohl(up2->sg.grp.s_addr))
return 1;
if (ntohl(up1->sg.src.s_addr) < ntohl(up2->sg.src.s_addr))
return -1;
if (ntohl(up1->sg.src.s_addr) > ntohl(up2->sg.src.s_addr))
return 1;
return 0;
}
static struct pim_upstream *pim_upstream_new(struct prefix_sg *sg,
struct interface *incoming,
int flags)
@ -509,11 +532,20 @@ static struct pim_upstream *pim_upstream_new(struct prefix_sg *sg,
if (PIM_DEBUG_PIM_TRACE)
zlog_debug("%s: Received a (*,G) with no RP configured", __PRETTY_FUNCTION__);
hash_release (pim_upstream_hash, up);
XFREE (MTYPE_PIM_UPSTREAM, up);
return NULL;
}
up->parent = pim_upstream_find_parent (sg);
up->parent = pim_upstream_find_parent (up);
if (up->sg.src.s_addr == INADDR_ANY)
{
up->sources = list_new ();
up->sources->cmp = pim_upstream_compare;
}
else
up->sources = NULL;
pim_upstream_find_new_children (up);
up->flags = flags;
up->ref_count = 1;
@ -538,12 +570,26 @@ static struct pim_upstream *pim_upstream_new(struct prefix_sg *sg,
if (PIM_DEBUG_PIM_TRACE)
zlog_debug ("%s: Attempting to create upstream(%s), Unable to RPF for source", __PRETTY_FUNCTION__,
pim_str_sg_dump (&up->sg));
if (up->parent)
{
listnode_delete (up->parent->sources, up);
up->parent = NULL;
}
pim_upstream_remove_children (up);
if (up->sources)
list_delete (up->sources);
hash_release (pim_upstream_hash, up);
XFREE(MTYPE_PIM_UPSTREAM, up);
return NULL;
}
listnode_add_sort(pim_upstream_list, up);
if (PIM_DEBUG_PIM_TRACE)
zlog_debug ("%s: Created Upstream %s", __PRETTY_FUNCTION__, pim_str_sg_dump (&up->sg));
return up;
}
@ -1162,27 +1208,6 @@ pim_upstream_find_new_rpf (void)
}
}
static int
pim_upstream_compare (const void *arg1, const void *arg2)
{
const struct pim_upstream *up1 = (const struct pim_upstream *)arg1;
const struct pim_upstream *up2 = (const struct pim_upstream *)arg2;
if (ntohl(up1->sg.grp.s_addr) < ntohl(up2->sg.grp.s_addr))
return -1;
if (ntohl(up1->sg.grp.s_addr) > ntohl(up2->sg.grp.s_addr))
return 1;
if (ntohl(up1->sg.src.s_addr) < ntohl(up2->sg.src.s_addr))
return -1;
if (ntohl(up1->sg.src.s_addr) > ntohl(up2->sg.src.s_addr))
return 1;
return 0;
}
static unsigned int
pim_upstream_hash_key (void *arg)
{
@ -1222,6 +1247,6 @@ pim_upstream_init (void)
pim_upstream_list = list_new ();
pim_upstream_list->del = (void (*)(void *)) pim_upstream_free;
pim_upstream_list->cmp = (int (*)(void *, void *)) pim_upstream_compare;
pim_upstream_list->cmp = pim_upstream_compare;
}

1
pimd/pim_upstream.h
View File

@ -85,6 +85,7 @@ struct pim_upstream {
struct prefix_sg sg; /* (S,G) group key */
uint32_t flags;
struct channel_oil *channel_oil;
struct list *sources;
enum pim_upstream_state join_state;
enum pim_upstream_sptbit sptbit;