diff options
| author | Thomas Falcon <tlfalcon@linux.vnet.ibm.com> | 2018-02-09 18:41:09 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-02-09 20:20:39 +0100 |
| commit | faefaa97215a0c05105d7ae180fe1a3b5979ad1f (patch) | |
| tree | 05ec5c9be1529f7b919e0ddb50c38160062dca7c /drivers/net | |
| parent | Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf (diff) | |
| download | linux-faefaa97215a0c05105d7ae180fe1a3b5979ad1f.tar.xz linux-faefaa97215a0c05105d7ae180fe1a3b5979ad1f.zip | |
ibmvnic: Reset long term map ID counter
When allocating RX or TX buffer pools, the driver needs to provide a
unique mapping ID to firmware for each pool. This value is assigned
using a counter which is incremented after a new pool is created. The
ID can be an integer ranging from 1-255. When migrating to a device
that requests a different number of queues, this value was not being
reset properly. As a result, after enough migrations, the counter
exceeded the upper bound and pool creation failed. This is fixed by
resetting the counter to one in this case.
Signed-off-by: Thomas Falcon <tlfalcon@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/ethernet/ibm/ibmvnic.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c index dd4a2946e1da..ce127a72cda2 100644 --- a/drivers/net/ethernet/ibm/ibmvnic.c +++ b/drivers/net/ethernet/ibm/ibmvnic.c @@ -1644,6 +1644,7 @@ static int do_reset(struct ibmvnic_adapter *adapter, return rc; } else if (adapter->req_rx_queues != old_num_rx_queues || adapter->req_tx_queues != old_num_tx_queues) { + adapter->map_id = 1; release_rx_pools(adapter); release_tx_pools(adapter); init_rx_pools(netdev); |