From mboxrd@z Thu Jan 1 00:00:00 1970 From: Xiao Wang Subject: [PATCH v5 07/10] net/ifc: add devarg for LM mode Date: Tue, 18 Dec 2018 16:02:04 +0800 Message-ID: <20181218080207.178666-8-xiao.w.wang@intel.com> References: <20181214211612.167681-4-xiao.w.wang@intel.com> <20181218080207.178666-1-xiao.w.wang@intel.com> Cc: alejandro.lucero@netronome.com, dev@dpdk.org, zhihong.wang@intel.com, xiaolong.ye@intel.com, Xiao Wang To: tiwei.bie@intel.com, maxime.coquelin@redhat.com Return-path: Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by dpdk.org (Postfix) with ESMTP id 62CA11B6F7 for ; Tue, 18 Dec 2018 09:12:27 +0100 (CET) In-Reply-To: <20181218080207.178666-1-xiao.w.wang@intel.com> List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" 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 "sw-live-migration=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 --- 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..2f73d3c7c 100644 --- a/drivers/net/ifc/ifcvf_vdpa.c +++ b/drivers/net/ifc/ifcvf_vdpa.c @@ -8,6 +8,7 @@ #include #include #include +#include #include #include @@ -31,9 +32,11 @@ #endif #define IFCVF_VDPA_MODE "vdpa" +#define IFCVF_SW_FALLBACK_LM "sw-live-migration" 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