Secondary process is not allowed to register mempools on the flight.
The code will return invalid memory key for such case.
Fixes: 87ec44ce1651 ("net/mlx5: add operations for secondary process")
Cc: sta...@dpdk.org
Signed-off-by: Shahaf Shuler <shah...@mellanox.com>
Signed-off-by: Xueming Li <xuemi...@mellanox.com>
Acked-by: Nelio Laranjeiro <nelio.laranje...@6wind.com>
---
doc/guides/nics/mlx5.rst | 6 +++++-
drivers/net/mlx5/mlx5_mr.c | 12 ++++++++++--
2 files changed, 15 insertions(+), 3 deletions(-)
diff --git a/doc/guides/nics/mlx5.rst b/doc/guides/nics/mlx5.rst
index bdc2216c0..2e6d1e45a 100644
--- a/doc/guides/nics/mlx5.rst
+++ b/doc/guides/nics/mlx5.rst
@@ -106,7 +106,11 @@ Limitations
- Inner RSS for VXLAN frames is not supported yet.
- Hardware checksum RX offloads for VXLAN inner header are not supported yet.
-- Forked secondary process not supported.
+- For secondary process:
+
+ - Forked secondary process not supported.
+ - All mempools must be initialized before rte_eth_dev_start().
+
- Flow pattern without any specific vlan will match for vlan packets as well:
When VLAN spec is not specified in the pattern, the matching rule will be
created with VLAN as a wild card.
diff --git a/drivers/net/mlx5/mlx5_mr.c b/drivers/net/mlx5/mlx5_mr.c
index 2776dc700..cb625dc61 100644
--- a/drivers/net/mlx5/mlx5_mr.c
+++ b/drivers/net/mlx5/mlx5_mr.c
@@ -141,8 +141,16 @@ priv_txq_mp2mr_reg(struct priv *priv, struct mlx5_txq_data
*txq,
DEBUG("%p: discovered new memory pool \"%s\" (%p)",
(void *)txq_ctrl, mp->name, (void *)mp);
mr = priv_mr_get(priv, mp);
- if (mr == NULL)
- mr = priv_mr_new(priv, mp);
+ if (mr == NULL) {
+ if (rte_eal_process_type() != RTE_PROC_PRIMARY) {
+ DEBUG("Using unregistered mempool 0x%p(%s) in secondary
process,"
+ " please create mempool before
rte_eth_dev_start()",
+ (void *)mp, mp->name);
+ return NULL;
+ } else {
+ mr = priv_mr_new(priv, mp);
+ }
+ }
if (unlikely(mr == NULL)) {
DEBUG("%p: unable to configure MR, ibv_reg_mr() failed.",
(void *)txq_ctrl);
--
2.12.0
