From f1c4022ab26850408952c74bada285414ba74d77 Mon Sep 17 00:00:00 2001 From: Thomas Falcon Date: Wed, 21 Nov 2018 11:17:59 -0600 Subject: [PATCH] ibmvnic: Update driver queues after change in ring size support [ Upstream commit 5bf032ef08e6a110edc1e3bfb3c66a208fb55125 ] During device reset, queue memory is not being updated to accommodate changes in ring buffer sizes supported by backing hardware. Track any differences in ring buffer sizes following the reset and update queue memory when possible. Signed-off-by: Thomas Falcon Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- drivers/net/ethernet/ibm/ibmvnic.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c index f1d4d7a..5ab21a1 100644 --- a/drivers/net/ethernet/ibm/ibmvnic.c +++ b/drivers/net/ethernet/ibm/ibmvnic.c @@ -1737,6 +1737,7 @@ static int do_reset(struct ibmvnic_adapter *adapter, struct ibmvnic_rwi *rwi, u32 reset_state) { u64 old_num_rx_queues, old_num_tx_queues; + u64 old_num_rx_slots, old_num_tx_slots; struct net_device *netdev = adapter->netdev; int i, rc; @@ -1748,6 +1749,8 @@ static int do_reset(struct ibmvnic_adapter *adapter, old_num_rx_queues = adapter->req_rx_queues; old_num_tx_queues = adapter->req_tx_queues; + old_num_rx_slots = adapter->req_rx_add_entries_per_subcrq; + old_num_tx_slots = adapter->req_tx_entries_per_subcrq; ibmvnic_cleanup(netdev); @@ -1810,7 +1813,11 @@ static int do_reset(struct ibmvnic_adapter *adapter, if (rc) return rc; } else if (adapter->req_rx_queues != old_num_rx_queues || - adapter->req_tx_queues != old_num_tx_queues) { + adapter->req_tx_queues != old_num_tx_queues || + adapter->req_rx_add_entries_per_subcrq != + old_num_rx_slots || + adapter->req_tx_entries_per_subcrq != + old_num_tx_slots) { release_rx_pools(adapter); release_tx_pools(adapter); release_napi(adapter); -- 2.7.4