We add a new helper function netdev_add_filter(), this function can help adding a filter object to a netdev. Besides, we add a is_default member for struct NetFilterState to indicate whether the filter is default or not.
Signed-off-by: zhanghailiang <zhang.zhanghaili...@huawei.com> --- v2: -Re-implement netdev_add_filter() by re-using object_create() (Jason's suggestion) --- include/net/filter.h | 7 +++++ net/filter.c | 80 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 87 insertions(+) diff --git a/include/net/filter.h b/include/net/filter.h index af3c53c..ee1c024 100644 --- a/include/net/filter.h +++ b/include/net/filter.h @@ -55,6 +55,7 @@ struct NetFilterState { char *netdev_id; NetClientState *netdev; NetFilterDirection direction; + bool is_default; bool enabled; QTAILQ_ENTRY(NetFilterState) next; }; @@ -74,4 +75,10 @@ ssize_t qemu_netfilter_pass_to_next(NetClientState *sender, int iovcnt, void *opaque); +void netdev_add_filter(const char *netdev_id, + const char *filter_type, + const char *id, + bool is_default, + Error **errp); + #endif /* QEMU_NET_FILTER_H */ diff --git a/net/filter.c b/net/filter.c index d08a2be..dc7aa9b 100644 --- a/net/filter.c +++ b/net/filter.c @@ -214,6 +214,86 @@ static void netfilter_complete(UserCreatable *uc, Error **errp) QTAILQ_INSERT_TAIL(&nf->netdev->filters, nf, next); } +QemuOptsList qemu_filter_opts = { + .name = "default-filter", + .head = QTAILQ_HEAD_INITIALIZER(qemu_filter_opts.head), + .desc = { + { + .name = "qom-type", + .type = QEMU_OPT_STRING, + },{ + .name = "id", + .type = QEMU_OPT_STRING, + },{ + .name = "netdev", + .type = QEMU_OPT_STRING, + },{ + .name = "status", + .type = QEMU_OPT_STRING, + }, + { /* end of list */ } + }, +}; + +static void filter_set_default_flag(const char *id, + bool is_default, + Error **errp) +{ + Object *obj, *container; + NetFilterState *nf; + + container = object_get_objects_root(); + obj = object_resolve_path_component(container, id); + if (!obj) { + error_setg(errp, "object id not found"); + return; + } + nf = NETFILTER(obj); + nf->is_default = is_default; +} + +void netdev_add_filter(const char *netdev_id, + const char *filter_type, + const char *id, + bool is_default, + Error **errp) +{ + NetClientState *nc = qemu_find_netdev(netdev_id); + char *optarg; + QemuOpts *opts = NULL; + Error *err = NULL; + + /* FIXME: Not support multiple queues */ + if (!nc || nc->queue_index > 1) { + return; + } + /* Not support vhost-net */ + if (get_vhost_net(nc)) { + return; + } + + optarg = g_strdup_printf("qom-type=%s,id=%s,netdev=%s,status=%s", + filter_type, id, netdev_id, is_default ? "disable" : "enable"); + opts = qemu_opts_parse_noisily(&qemu_filter_opts, + optarg, false); + if (!opts) { + error_report("Failed to parse param '%s'", optarg); + exit(1); + } + g_free(optarg); + if (object_create(NULL, opts, &err) < 0) { + error_report("Failed to create object"); + goto out_clean; + } + filter_set_default_flag(id, is_default, &err); + +out_clean: + qemu_opts_del(opts); + if (err) { + error_propagate(errp, err); + } +} + static void netfilter_finalize(Object *obj) { NetFilterState *nf = NETFILTER(obj); -- 1.8.3.1