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authorNeale Ranns <neale@graphiant.com>2022-02-24 10:35:02 +0000
committerBeno�t Ganne <bganne@cisco.com>2022-03-03 16:49:20 +0000
commit758ec1371860929f9a4021ec7b22766d33303e83 (patch)
tree0b14a6fe53765a64c7a0a407f5feb43d8d4cb564 /src/vnet/ip
parent87e92c6586747a790ae514effb79b86a3e53958e (diff)
ip: Path MTU DPO allocation function is public
Type: refactor check for pool expansion in the DPO allocation, just in case. Signed-off-by: Neale Ranns <neale@graphiant.com> Change-Id: I6ba7dd66313630d3f24a51700ab4486ba43d856b
Diffstat (limited to 'src/vnet/ip')
-rw-r--r--src/vnet/ip/ip_path_mtu.c27
-rw-r--r--src/vnet/ip/ip_path_mtu.h3
2 files changed, 23 insertions, 7 deletions
diff --git a/src/vnet/ip/ip_path_mtu.c b/src/vnet/ip/ip_path_mtu.c
index 40d8c8fab0b..84dd625c225 100644
--- a/src/vnet/ip/ip_path_mtu.c
+++ b/src/vnet/ip/ip_path_mtu.c
@@ -297,10 +297,21 @@ ip_ptmu_adj_walk_update (adj_index_t ai, void *ctx)
static ip_pmtu_dpo_t *
ip_pmtu_dpo_alloc (void)
{
+ vlib_main_t *vm = vlib_get_main ();
+ u8 need_barrier_sync = 0;
ip_pmtu_dpo_t *ipm;
+ pool_get_aligned_will_expand (ip_pmtu_dpo_pool, need_barrier_sync,
+ sizeof (ip_pmtu_dpo_t));
+
+ if (need_barrier_sync)
+ vlib_worker_thread_barrier_sync (vm);
+
pool_get_aligned_zero (ip_pmtu_dpo_pool, ipm, sizeof (ip_pmtu_dpo_t));
+ if (need_barrier_sync)
+ vlib_worker_thread_barrier_release (vm);
+
return (ipm);
}
@@ -353,18 +364,16 @@ ip_pmtu_dpo_get_urpf (const dpo_id_t *dpo)
}
void
-ip_pmtu_dpo_add_or_lock (fib_protocol_t fproto, u16 pmtu, dpo_id_t *dpo)
+ip_pmtu_dpo_add_or_lock (u16 pmtu, const dpo_id_t *parent, dpo_id_t *dpo)
{
ip_pmtu_dpo_t *ipm;
- dpo_id_t parent = DPO_INVALID;
ipm = ip_pmtu_dpo_alloc ();
- ipm->ipm_proto = fib_proto_to_dpo (fproto);
+ ipm->ipm_proto = parent->dpoi_proto;
ipm->ipm_pmtu = pmtu;
- dpo_copy (&parent, drop_dpo_get (ipm->ipm_proto));
- dpo_stack (ip_pmtu_dpo_type, ipm->ipm_proto, &ipm->ipm_dpo, &parent);
+ dpo_stack (ip_pmtu_dpo_type, ipm->ipm_proto, &ipm->ipm_dpo, parent);
dpo_set (dpo, ip_pmtu_dpo_type, ipm->ipm_proto, ip_pmtu_dpo_get_index (ipm));
}
@@ -516,7 +525,9 @@ ip_pmtu_alloc (u32 fib_index, const fib_prefix_t *pfx,
/*
* interpose a policy DPO from the nh so that MTU is applied
*/
- ip_pmtu_dpo_add_or_lock (pfx->fp_proto, ipt->ipt_oper_pmtu, &ip_dpo);
+ ip_pmtu_dpo_add_or_lock (ipt->ipt_oper_pmtu,
+ drop_dpo_get (fib_proto_to_dpo (pfx->fp_proto)),
+ &ip_dpo);
fib_table_entry_special_dpo_add (fib_index, pfx, ip_pmtu_source,
FIB_ENTRY_FLAG_INTERPOSE, &ip_dpo);
@@ -587,7 +598,9 @@ ip_pmtu_stack (ip_pmtu_t *ipt)
{
dpo_id_t ip_dpo = DPO_INVALID;
- ip_pmtu_dpo_add_or_lock (pfx->fp_proto, ipt->ipt_oper_pmtu, &ip_dpo);
+ ip_pmtu_dpo_add_or_lock (
+ ipt->ipt_oper_pmtu,
+ drop_dpo_get (fib_proto_to_dpo (pfx->fp_proto)), &ip_dpo);
fib_table_entry_special_dpo_update (
fib_index, pfx, ip_pmtu_source, FIB_ENTRY_FLAG_INTERPOSE, &ip_dpo);
diff --git a/src/vnet/ip/ip_path_mtu.h b/src/vnet/ip/ip_path_mtu.h
index 2c54fcd7401..96a5227237a 100644
--- a/src/vnet/ip/ip_path_mtu.h
+++ b/src/vnet/ip/ip_path_mtu.h
@@ -100,6 +100,9 @@ extern int ip_path_mtu_replace_end (void);
extern u32 ip_pmtu_get_table_id (const ip_pmtu_t *ipt);
extern void ip_pmtu_get_ip (const ip_pmtu_t *ipt, ip_address_t *ip);
+extern void ip_pmtu_dpo_add_or_lock (u16 pmtu, const dpo_id_t *parent,
+ dpo_id_t *dpo);
+
/**
* Data-plane accessor functions
*/