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authorNeale Ranns <nranns@cisco.com>2017-04-21 01:07:59 -0700
committerDamjan Marion <dmarion.lists@gmail.com>2017-04-26 15:31:41 +0000
commit227038a444b98f922b4a4f44b85ae60f9ee86e1c (patch)
treed4268410e3f860bb01386f4242e023324885801d /src/vnet/fib/fib_entry.c
parent9806eae1f5f3953f7ac2c5bd07061a94387d757e (diff)
IP Flow Hash Config fixes
- the flow hash config is (and was) cached on the load-balance object so the fib_table_t struct is not used a switch time. Therefore changes to the table's flow hash config need to be propagated to all load-balances and hance all FIB entries in the table. - enable API for setting the IPv6 table flow hash config - use only the hash config in the fib_table_t object and not on the ipX_fib_t - add tests. Change-Id: Ib804c11162c6d4972c764957562c372f663e05d4 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.c29
1 files changed, 29 insertions, 0 deletions
diff --git a/src/vnet/fib/fib_entry.c b/src/vnet/fib/fib_entry.c
index 6f811aa1414..29f5b35965d 100644
--- a/src/vnet/fib/fib_entry.c
+++ b/src/vnet/fib/fib_entry.c
@@ -1390,6 +1390,35 @@ fib_entry_is_resolved (fib_node_index_t fib_entry_index)
}
}
+void
+fib_entry_set_flow_hash_config (fib_node_index_t fib_entry_index,
+ flow_hash_config_t hash_config)
+{
+ fib_entry_t *fib_entry;
+
+ fib_entry = fib_entry_get(fib_entry_index);
+
+ /*
+ * pass the hash-config on to the load-balance object where it is cached.
+ * we can ignore LBs in the delegate chains, since they will not be of the
+ * correct protocol type (i.e. they are not IP)
+ * There's no way, nor need, to change the hash config for MPLS.
+ */
+ if (dpo_id_is_valid(&fib_entry->fe_lb))
+ {
+ load_balance_t *lb;
+
+ ASSERT(DPO_LOAD_BALANCE == fib_entry->fe_lb.dpoi_type);
+
+ lb = load_balance_get(fib_entry->fe_lb.dpoi_index);
+
+ /*
+ * atomic update for packets in flight
+ */
+ lb->lb_hash_config = hash_config;
+ }
+}
+
static int
fib_ip4_address_compare (const ip4_address_t * a1,
const ip4_address_t * a2)