Adding debian version 4.19.249-2.debian/4.19.249-2debian

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 103 insertions, 0 deletions

diff --git a/debian/patches/features/all/ena/net-ena-allow-automatic-fallback-to-polling-mode.patch b/debian/patches/features/all/ena/net-ena-allow-automatic-fallback-to-polling-mode.patch
new file mode 100644
index 000000000..dab6166e1
--- /dev/null
+++ b/debian/patches/features/all/ena/net-ena-allow-automatic-fallback-to-polling-mode.patch
@@ -0,0 +1,103 @@
+From: Sameeh Jubran <sameehj@amazon.com>
+Date: Mon, 3 Jun 2019 17:43:25 +0300
+Subject: [PATCH] net: ena: allow automatic fallback to polling mode
+Origin: https://git.kernel.org/linus/a4e262cde3cda4491ce666e7c5270954c4d926b9
+Bug-Debian: https://bugs.debian.org/941291
+
+Enable fallback to polling mode for Admin queue
+when identified a command response arrival
+without an accompanying MSI-X interrupt
+
+Signed-off-by: Igor Chauskin <igorch@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_com.c | 34 +++++++++++++++++------
+ drivers/net/ethernet/amazon/ena/ena_com.h | 14 ++++++++++
+ 2 files changed, 39 insertions(+), 9 deletions(-)
+
+Index: linux/drivers/net/ethernet/amazon/ena/ena_com.c
+===================================================================
+--- linux.orig/drivers/net/ethernet/amazon/ena/ena_com.c
++++ linux/drivers/net/ethernet/amazon/ena/ena_com.c
+@@ -762,16 +762,26 @@ static int ena_com_wait_and_process_admi
+ 		admin_queue->stats.no_completion++;
+ 		spin_unlock_irqrestore(&admin_queue->q_lock, flags);
+ 
+-		if (comp_ctx->status == ENA_CMD_COMPLETED)
+-			pr_err("The ena device have completion but the driver didn't receive any MSI-X interrupt (cmd %d)\n",
+-			       comp_ctx->cmd_opcode);
+-		else
+-			pr_err("The ena device doesn't send any completion for the admin cmd %d status %d\n",
++		if (comp_ctx->status == ENA_CMD_COMPLETED) {
++			pr_err("The ena device sent a completion but the driver didn't receive a MSI-X interrupt (cmd %d), autopolling mode is %s\n",
++			       comp_ctx->cmd_opcode,
++			       admin_queue->auto_polling ? "ON" : "OFF");
++			/* Check if fallback to polling is enabled */
++			if (admin_queue->auto_polling)
++				admin_queue->polling = true;
++		} else {
++			pr_err("The ena device doesn't send a completion for the admin cmd %d status %d\n",
+ 			       comp_ctx->cmd_opcode, comp_ctx->status);
+-
+-		admin_queue->running_state = false;
+-		ret = -ETIME;
+-		goto err;
++		}
++		/* Check if shifted to polling mode.
++		 * This will happen if there is a completion without an interrupt
++		 * and autopolling mode is enabled. Continuing normal execution in such case
++		 */
++		if (!admin_queue->polling) {
++			admin_queue->running_state = false;
++			ret = -ETIME;
++			goto err;
++		}
+ 	}
+ 
+ 	ret = ena_com_comp_status_to_errno(comp_ctx->comp_status);
+@@ -1650,6 +1660,12 @@ void ena_com_set_admin_polling_mode(stru
+ 	ena_dev->admin_queue.polling = polling;
+ }
+ 
++void ena_com_set_admin_auto_polling_mode(struct ena_com_dev *ena_dev,
++					 bool polling)
++{
++	ena_dev->admin_queue.auto_polling = polling;
++}
++
+ int ena_com_mmio_reg_read_request_init(struct ena_com_dev *ena_dev)
+ {
+ 	struct ena_com_mmio_read *mmio_read = &ena_dev->mmio_read;
+Index: linux/drivers/net/ethernet/amazon/ena/ena_com.h
+===================================================================
+--- linux.orig/drivers/net/ethernet/amazon/ena/ena_com.h
++++ linux/drivers/net/ethernet/amazon/ena/ena_com.h
+@@ -283,6 +283,9 @@ struct ena_com_admin_queue {
+ 	/* Indicate if the admin queue should poll for completion */
+ 	bool polling;
+ 
++	/* Define if fallback to polling mode should occur */
++	bool auto_polling;
++
+ 	u16 curr_cmd_id;
+ 
+ 	/* Indicate that the ena was initialized and can
+@@ -538,6 +541,17 @@ void ena_com_set_admin_polling_mode(stru
+  */
+ bool ena_com_get_ena_admin_polling_mode(struct ena_com_dev *ena_dev);
+ 
++/* ena_com_set_admin_auto_polling_mode - Enable autoswitch to polling mode
++ * @ena_dev: ENA communication layer struct
++ * @polling: Enable/Disable polling mode
++ *
++ * Set the autopolling mode.
++ * If autopolling is on:
++ * In case of missing interrupt when data is available switch to polling.
++ */
++void ena_com_set_admin_auto_polling_mode(struct ena_com_dev *ena_dev,
++					 bool polling);
++
+ /* ena_com_admin_q_comp_intr_handler - admin queue interrupt handler
+  * @ena_dev: ENA communication layer struct
+  *