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gtpu: Track the dst FIB entry instead of RR sourcing that

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RR sourcing the destination FIB entry limits the number of tunnels
to 255 for a particular destination. This change removes this limit.

Type: fix

The patch is based on 1f50bf8fc57ebf78f9056185a342493be460a847
that introduced the FIB entry tracking but did not update
the gtpu plugin.

Signed-off-by: Miklos Tirpak <miklos.tirpak@gmail.com>
Change-Id: I8a4a87382a6eb5120e2bb65b9bc3c446bbfdbd3b
(cherry picked from commit 75c72369186f6341a13374d2dd6e60ce3c7a88a6)
This commit is contained in:
Miklos Tirpak
2019-12-19 12:06:20 +01:00
committed by Andrew Yourtchenko
parent c9563e60fe
commit 5381da1dc6
1 changed files with 9 additions and 9 deletions
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18
src/plugins/gtpu/gtpu.c
View File

@ -24,6 +24,7 @@
#include <vnet/ethernet/ethernet.h>
#include <vnet/fib/fib_entry.h>
#include <vnet/fib/fib_table.h>
#include <vnet/fib/fib_entry_track.h>
#include <vnet/mfib/mfib_table.h>
#include <vnet/adj/adj_mcast.h>
#include <vnet/dpo/dpo.h>
@ -489,17 +490,17 @@ int vnet_gtpu_add_del_tunnel
if (!ip46_address_is_multicast (&t->dst))
{
/* Unicast tunnel -
* source the FIB entry for the tunnel's destination
* and become a child thereof. The tunnel will then get poked
* Track the FIB entry for the tunnel's destination.
* The tunnel will then get poked
* when the forwarding for the entry updates, and the tunnel can
* re-stack accordingly
*/
vtep_addr_ref (&t->src);
t->fib_entry_index = fib_table_entry_special_add
(t->encap_fib_index, &tun_dst_pfx, FIB_SOURCE_RR,
FIB_ENTRY_FLAG_NONE);
t->sibling_index = fib_entry_child_add
(t->fib_entry_index, gtm->fib_node_type, t - gtm->tunnels);
t->fib_entry_index = fib_entry_track (t->encap_fib_index,
&tun_dst_pfx,
gtm->fib_node_type,
t - gtm->tunnels,
&t->sibling_index);
gtpu_tunnel_restack_dpo (t);
}
else
@ -602,8 +603,7 @@ int vnet_gtpu_add_del_tunnel
if (!ip46_address_is_multicast (&t->dst))
{
vtep_addr_unref (&t->src);
fib_entry_child_remove (t->fib_entry_index, t->sibling_index);
fib_table_entry_delete_index (t->fib_entry_index, FIB_SOURCE_RR);
fib_entry_untrack (t->fib_entry_index, t->sibling_index);
}
else if (vtep_addr_unref (&t->dst) == 0)
{