diff options
Diffstat (limited to '')
| -rw-r--r-- | debian/patches/features/all/ena/net-ena-Fix-bug-where-ring-allocation-backoff-stoppe.patch | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/debian/patches/features/all/ena/net-ena-Fix-bug-where-ring-allocation-backoff-stoppe.patch b/debian/patches/features/all/ena/net-ena-Fix-bug-where-ring-allocation-backoff-stoppe.patch new file mode 100644 index 000000000..d2e7da1ab --- /dev/null +++ b/debian/patches/features/all/ena/net-ena-Fix-bug-where-ring-allocation-backoff-stoppe.patch @@ -0,0 +1,39 @@ +From: Sameeh Jubran <sameehj@amazon.com> +Date: Sun, 23 Jun 2019 10:11:10 +0300 +Subject: [PATCH] net: ena: Fix bug where ring allocation backoff stopped too + late +Origin: https://git.kernel.org/linus/3e5bfb189e1a65df132fd0e3fa00fbb6feec1431 +Bug-Debian: https://bugs.debian.org/941291 + +The current code of create_queues_with_size_backoff() allows the ring size +to become as small as ENA_MIN_RING_SIZE/2. This is a bug since we don't +want the queue ring to be smaller than ENA_MIN_RING_SIZE + +In this commit we change the loop's termination condition to look at the +queue size of the next iteration instead of that of the current one, +so that the minimal queue size again becomes ENA_MIN_RING_SIZE. + +Fixes: eece4d2ab9d2 ("net: ena: add ethtool function for changing io queue sizes") + +Signed-off-by: Arthur Kiyanovski <akiyano@amazon.com> +Signed-off-by: Sameeh Jubran <sameehj@amazon.com> +Signed-off-by: David S. Miller <davem@davemloft.net> +--- + drivers/net/ethernet/amazon/ena/ena_netdev.c | 4 ++-- + 1 file changed, 2 insertions(+), 2 deletions(-) + +Index: linux/drivers/net/ethernet/amazon/ena/ena_netdev.c +=================================================================== +--- linux.orig/drivers/net/ethernet/amazon/ena/ena_netdev.c ++++ linux/drivers/net/ethernet/amazon/ena/ena_netdev.c +@@ -1836,8 +1836,8 @@ err_setup_tx: + if (cur_rx_ring_size >= cur_tx_ring_size) + new_rx_ring_size = cur_rx_ring_size / 2; + +- if (cur_tx_ring_size < ENA_MIN_RING_SIZE || +- cur_rx_ring_size < ENA_MIN_RING_SIZE) { ++ if (new_tx_ring_size < ENA_MIN_RING_SIZE || ++ new_rx_ring_size < ENA_MIN_RING_SIZE) { + netif_err(adapter, ifup, adapter->netdev, + "Queue creation failed with the smallest possible queue size of %d for both queues. Not retrying with smaller queues\n", + ENA_MIN_RING_SIZE); |