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From: Xiao Wang <xiao.w.wang@intel.com>
To: alejandro.lucero@netronome.com,
tiwei.bie@intel.com
Cc: maxime.coquelin@redhat.com, dev@dpdk.org, zhihong.wang@intel.com,
xiaolong.ye@intel.com, Xiao Wang <xiao.w.wang@intel.com>
Date: Thu, 13 Dec 2018 18:09:07 +0800
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<20181213100910.13087-1-xiao.w.wang@intel.com>
Subject: [dpdk-dev] [PATCH v3 6/9] net/ifc: add devarg for LM mode
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This patch series enables a new method for live migration, i.e. software
assisted live migration. This patch provides a device argument for user
to choose the methold.
When "swlm=1", driver/device will do live migration with a relay thread
dealing with dirty page logging. Without this parameter, device will do
dirty page logging and there's no relay thread consuming CPU resource.
Signed-off-by: Xiao Wang <xiao.w.wang@intel.com>
---
drivers/net/ifc/ifcvf_vdpa.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/drivers/net/ifc/ifcvf_vdpa.c b/drivers/net/ifc/ifcvf_vdpa.c
index c0e50354a..395c5112f 100644
--- a/drivers/net/ifc/ifcvf_vdpa.c
+++ b/drivers/net/ifc/ifcvf_vdpa.c
@@ -8,6 +8,7 @@
#include <sys/ioctl.h>
#include <sys/epoll.h>
#include <linux/virtio_net.h>
+#include <stdbool.h>
#include <rte_malloc.h>
#include <rte_memory.h>
@@ -31,9 +32,11 @@
#endif
#define IFCVF_VDPA_MODE "vdpa"
+#define IFCVF_SW_FALLBACK_LM "swlm"
static const char * const ifcvf_valid_arguments[] = {
IFCVF_VDPA_MODE,
+ IFCVF_SW_FALLBACK_LM,
NULL
};
@@ -56,6 +59,7 @@ struct ifcvf_internal {
rte_atomic32_t dev_attached;
rte_atomic32_t running;
rte_spinlock_t lock;
+ bool sw_lm;
};
struct internal_list {
@@ -767,6 +771,7 @@ ifcvf_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
struct ifcvf_internal *internal = NULL;
struct internal_list *list = NULL;
int vdpa_mode = 0;
+ int sw_fallback_lm = 0;
struct rte_kvargs *kvlist = NULL;
int ret = 0;
@@ -826,6 +831,14 @@ ifcvf_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
internal->dev_addr.type = PCI_ADDR;
list->internal = internal;
+ if (rte_kvargs_count(kvlist, IFCVF_SW_FALLBACK_LM)) {
+ ret = rte_kvargs_process(kvlist, IFCVF_SW_FALLBACK_LM,
+ &open_int, &sw_fallback_lm);
+ if (ret < 0)
+ goto error;
+ }
+ internal->sw_lm = sw_fallback_lm;
+
internal->did = rte_vdpa_register_device(&internal->dev_addr,
&ifcvf_ops);
if (internal->did < 0) {
--
2.15.1