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authorNeale Ranns <nranns@cisco.com>2019-10-14 08:52:43 -0700
committerDamjan Marion <dmarion@me.com>2019-10-14 22:43:13 +0000
commita66020becd7d01eefea55244cbcf5df9679a9443 (patch)
tree5cfe7b89b470b8db5afd7c5c491f945142f95563 /src/vnet/fib/fib_entry.c
parentef3c11ca93b651611af33ab3e5d64217504d221d (diff)
fib: recursive calculation leads to delegate pool realloc
Type: fix Change-Id: Ib7ac53d1b59b641ccd3b1d733107d7f1ba174314 Signed-off-by: Neale Ranns <nranns@cisco.com>
Diffstat (limited to 'src/vnet/fib/fib_entry.c')
-rw-r--r--src/vnet/fib/fib_entry.c18
1 files changed, 14 insertions, 4 deletions
diff --git a/src/vnet/fib/fib_entry.c b/src/vnet/fib/fib_entry.c
index 9169dccff8a..833fcb33fcd 100644
--- a/src/vnet/fib/fib_entry.c
+++ b/src/vnet/fib/fib_entry.c
@@ -470,9 +470,12 @@ fib_entry_contribute_forwarding (fib_node_index_t fib_entry_index,
if (NULL == fed)
{
- fed = fib_entry_delegate_find_or_add(
- fib_entry,
- fib_entry_chain_type_to_delegate_type(fct));
+ /*
+ * use a temporary DPO lest the delegate realloc in the recursive
+ * calculation.
+ */
+ dpo_id_t tmp = DPO_INVALID;
+
/*
* on-demand create eos/non-eos.
* There is no on-demand delete because:
@@ -483,7 +486,14 @@ fib_entry_contribute_forwarding (fib_node_index_t fib_entry_index,
fib_entry_src_mk_lb(fib_entry,
fib_entry_get_best_src_i(fib_entry),
fct,
- &fed->fd_dpo);
+ &tmp);
+
+ fed = fib_entry_delegate_find_or_add(
+ fib_entry,
+ fib_entry_chain_type_to_delegate_type(fct));
+
+ dpo_copy(&fed->fd_dpo, &tmp);
+ dpo_reset(&tmp);
}
dpo_copy(dpo, &fed->fd_dpo);