From patchwork Tue Jun 16 12:27:44 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Micha=C5=82_Lowas-Rzechonek?= X-Patchwork-Id: 11607295 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 98BCB60D for ; Tue, 16 Jun 2020 12:27:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 773782080D for ; Tue, 16 Jun 2020 12:27:30 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=silvair-com.20150623.gappssmtp.com header.i=@silvair-com.20150623.gappssmtp.com header.b="s+wArg+T" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728348AbgFPM1a (ORCPT ); Tue, 16 Jun 2020 08:27:30 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43560 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725843AbgFPM12 (ORCPT ); Tue, 16 Jun 2020 08:27:28 -0400 Received: from mail-ed1-x52d.google.com (mail-ed1-x52d.google.com [IPv6:2a00:1450:4864:20::52d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2D156C08C5C3 for ; Tue, 16 Jun 2020 05:27:28 -0700 (PDT) Received: by mail-ed1-x52d.google.com with SMTP id x25so7155166edr.8 for ; Tue, 16 Jun 2020 05:27:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=silvair-com.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=F+3LHA6an8AXwiLSucktPnHRQI4LAHpvQehaSspu4EQ=; b=s+wArg+TR/aHnuI8z9smg55lNRPWVDBlR5D5XaiALBcuHD/VA3oXDuUac17WNKwH4P 7kt9lqjqvsyBShTzBqWEvuAWjSnfK8aiXhh4bdo1uJJnIarVXCSA3cy8FzaqkOhtzb6A M8e1T3CBOd1453bGep89AocEhOEBlTS7JXAB+EbmG/9gDyDDh9gyw5c9hxnuuVBDq3Jr SuRQkZM26digq7NIm7aZBXxvMebP9SQeFfTnRFpa/Nwiv7IIC3p78ltvy89CPia9M6OX FxZQ9j8BFWnndhLXVlz8VyHB0qAsyVlWFzuW9OdqeT2cGpf2D8t+S1tUy7k7OsXZCOY2 9NrA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=F+3LHA6an8AXwiLSucktPnHRQI4LAHpvQehaSspu4EQ=; b=UTUL7iAqeFnWUMhAw+HfgD6APU1NHUe5fzj206AJSdhUuf1GTtHYw9CxR5E6PBE2PV k9L9efZTcxO6DPKsYb0wP380ZAikVED55UH89COD7F2xun5k6P5BYEh2tTIiob1Y4jiv i1UZeCZUdwYkG0ZMiIZdzQQLp9c9k26CoxvSN+6PxHBOFAZLwG1s6sp+4tp+hfWVj6Sx I+hOJw/m5W/H5aD7DKgFMzHb8uJY3zmFc1s5DZf2S11d4vpArNWqYDmUXoepBllGRRta R+OD/S1EPkISJ50j4lRyjC7KIPCIpC/0gpcewoeXlooXhosUt86B8DOSOxVlk99iRtCC EmVA== X-Gm-Message-State: AOAM532idhqcyLD1SYsIB0Hcy1yFVmcb2UguaqmIFMallLW5aJamhwuz vTCHQaB8KsCrjB+pM2NSIMwjViPhi0c3hQ== X-Google-Smtp-Source: ABdhPJzgR3lNYmzQoC2w8OSWQQzEGMaTNmOgah5Rlx7UQ+EI2fobHU4Vrm/Nlo+u5in2kLeq5lep9g== X-Received: by 2002:a05:6402:1486:: with SMTP id e6mr2200980edv.99.1592310446536; Tue, 16 Jun 2020 05:27:26 -0700 (PDT) Received: from mlowasrzechonek2133.silvair.lan ([217.153.94.18]) by smtp.gmail.com with ESMTPSA id bt11sm3246334edb.48.2020.06.16.05.27.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 16 Jun 2020 05:27:26 -0700 (PDT) From: =?utf-8?q?Micha=C5=82_Lowas-Rzechonek?= To: linux-bluetooth@vger.kernel.org Cc: =?utf-8?q?Przemys=C5=82aw_Fierek?= Subject: [RFC BlueZ 1/2] mesh: Add documentation for AttachFD Date: Tue, 16 Jun 2020 14:27:44 +0200 Message-Id: <20200616122745.25056-2-michal.lowas-rzechonek@silvair.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200616122745.25056-1-michal.lowas-rzechonek@silvair.com> References: <20200616122745.25056-1-michal.lowas-rzechonek@silvair.com> MIME-Version: 1.0 Sender: linux-bluetooth-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org From: Przemysław Fierek --- doc/mesh-api.txt | 40 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) diff --git a/doc/mesh-api.txt b/doc/mesh-api.txt index 6d905cf48..cd2ffd2a8 100644 --- a/doc/mesh-api.txt +++ b/doc/mesh-api.txt @@ -118,6 +118,46 @@ Methods: org.bluez.mesh.Error.AlreadyExists, org.bluez.mesh.Error.Failed + object node, array{byte, array{(uint16, dict)}} configuration, fd + AttachFD(object app_root, uint64 token) + + This is an alternative version of the Attach() method. This method + acquires file descriptor for message reception. + + Method behaviour and usage is similiar to the Attach() method. + The difference between those two method is that after call AttachFD() + all received messages will be passed via file descriptor, + instead of daemon calling MessageReceived() and + DevKeyMessageReceived() methods. + + + The data format used for the exchange: + + Message types: + 0 - Device Key Message + 1 - Application Key Message + + struct { + uint8_t element; + uint8_t src; + + uint8_t type; + union { + struct { + uint8_t net_idx; + bool remote; + } dev; // only meaningful when type is 0 + + struct { + uint8_t app_idx; + uint16_t dst; + uint8_t label[16]; // only meaningful when dst is virtual + } app; // only meaningful when type is 1 + } + + uint8_t data[]; + }; + void Leave(uint64 token) This removes the configuration information about the mesh node From patchwork Tue Jun 16 12:27:45 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?q?Micha=C5=82_Lowas-Rzechonek?= X-Patchwork-Id: 11607299 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id DC99860D for ; 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Tue, 16 Jun 2020 05:27:27 -0700 (PDT) Received: from mlowasrzechonek2133.silvair.lan ([217.153.94.18]) by smtp.gmail.com with ESMTPSA id bt11sm3246334edb.48.2020.06.16.05.27.26 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 16 Jun 2020 05:27:27 -0700 (PDT) From: =?utf-8?q?Micha=C5=82_Lowas-Rzechonek?= To: linux-bluetooth@vger.kernel.org Subject: [RFC BlueZ 2/2] mesh: Implement AttachFD method Date: Tue, 16 Jun 2020 14:27:45 +0200 Message-Id: <20200616122745.25056-3-michal.lowas-rzechonek@silvair.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200616122745.25056-1-michal.lowas-rzechonek@silvair.com> References: <20200616122745.25056-1-michal.lowas-rzechonek@silvair.com> MIME-Version: 1.0 Sender: linux-bluetooth-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org --- mesh/mesh.c | 12 ++++- mesh/model.c | 126 ++++++++++++++++++++++++++++++++++++++++++++++++++- mesh/node.c | 83 ++++++++++++++++++++++++++++++++- mesh/node.h | 4 +- 4 files changed, 219 insertions(+), 6 deletions(-) diff --git a/mesh/mesh.c b/mesh/mesh.c index 4abae4d92..f43d00b7c 100644 --- a/mesh/mesh.c +++ b/mesh/mesh.c @@ -612,14 +612,18 @@ static void attach_ready_cb(void *user_data, int status, struct mesh_node *node) { struct l_dbus_message *reply; struct l_dbus_message *pending_msg; + const char *method; pending_msg = l_queue_remove_if(pending_queue, simple_match, user_data); if (!pending_msg) return; + method = l_dbus_message_get_member(pending_msg); + if (status == MESH_ERROR_NONE) { reply = l_dbus_message_new_method_return(pending_msg); - node_build_attach_reply(node, reply); + node_build_attach_reply(node, reply, + !strcmp(method, "AttachFD")); } else reply = dbus_error(pending_msg, status, "Attach failed"); @@ -635,7 +639,7 @@ static struct l_dbus_message *attach_call(struct l_dbus *dbus, const char *app_path, *sender; struct l_dbus_message *pending_msg; - l_debug("Attach"); + l_debug("%s", l_dbus_message_get_member(msg)); if (!l_dbus_message_get_arguments(msg, "ot", &app_path, &token)) return dbus_error(msg, MESH_ERROR_INVALID_ARGS, NULL); @@ -846,6 +850,10 @@ static void setup_network_interface(struct l_dbus_interface *iface) "oa(ya(qa{sv}))", "ot", "node", "configuration", "app", "token"); + l_dbus_interface_method(iface, "AttachFD", 0, attach_call, + "oa(ya(qa{sv}))h", "ot", "node", + "configuration", "fd", "app", "token"); + l_dbus_interface_method(iface, "Leave", 0, leave_call, "", "t", "token"); diff --git a/mesh/model.c b/mesh/model.c index 5ed95afac..0bef11e36 100644 --- a/mesh/model.c +++ b/mesh/model.c @@ -21,6 +21,8 @@ #include #endif +#include +#include #include #include @@ -44,6 +46,33 @@ #define VIRTUAL_BASE 0x10000 +enum fd_msg_type { + DEV_KEY_MSG = 0, + APP_KEY_MSG = 1, +}; + +struct fd_msg { + + uint8_t element; + uint16_t src; + + enum fd_msg_type type :8; + union { + struct { + uint16_t net_idx; + uint8_t remote; + } dev; + + struct { + uint16_t app_idx; + uint16_t dst; + uint8_t label[16]; + } app; + }; + + uint8_t data[]; +} __attribute__((packed)); + struct mesh_model { const struct mesh_model_ops *cbs; void *user_data; @@ -782,7 +811,50 @@ static int add_sub(struct mesh_net *net, struct mesh_model *mod, return MESH_STATUS_SUCCESS; } -static void send_dev_key_msg_rcvd(struct mesh_node *node, uint8_t ele_idx, +static struct fd_msg *fd_msg_new(uint8_t ele_idx, uint16_t src, uint16_t size, const uint8_t *data, enum fd_msg_type type) +{ + size_t msg_len = sizeof(struct fd_msg) + size; + struct fd_msg *msg = l_malloc(msg_len); + + msg->element = ele_idx; + msg->src = src; + msg->type = type; + + memcpy(msg->data, data, size); + + return msg; +} + +static void fd_msg_send(struct l_io *io, struct fd_msg *msg, size_t size) +{ + struct iovec iov = { + .iov_base = msg, + .iov_len = sizeof(struct fd_msg) + size, + }; + struct msghdr hdr = { + .msg_iov = &iov, + .msg_iovlen = 1, + }; + + (void)sendmsg(l_io_get_fd(io), &hdr, MSG_NOSIGNAL); + + l_free(msg); +} + +static void send_fd_dev_key_msg_rcvd(struct l_io *io, uint8_t ele_idx, + uint16_t src, uint16_t app_idx, + uint16_t net_idx, uint16_t size, + const uint8_t *data) +{ + struct fd_msg *msg = fd_msg_new(ele_idx, src, size, data, DEV_KEY_MSG); + + msg->dev.net_idx = net_idx; + msg->dev.remote = (app_idx != APP_IDX_DEV_LOCAL); + + fd_msg_send(io, msg, size); +} + +static void send_dbus_dev_key_msg_rcvd(struct mesh_node *node, uint8_t ele_idx, uint16_t src, uint16_t app_idx, uint16_t net_idx, uint16_t size, const uint8_t *data) @@ -818,7 +890,40 @@ static void send_dev_key_msg_rcvd(struct mesh_node *node, uint8_t ele_idx, l_dbus_send(dbus, msg); } -static void send_msg_rcvd(struct mesh_node *node, uint8_t ele_idx, +static void send_dev_key_msg_rcvd(struct mesh_node *node, uint8_t ele_idx, + uint16_t src, uint16_t app_idx, + uint16_t net_idx, uint16_t size, + const uint8_t *data) +{ + struct l_io *io = node_get_fd_io(node); + + if (io) + send_fd_dev_key_msg_rcvd(io, ele_idx, src, app_idx, net_idx, + size, data); + else + send_dbus_dev_key_msg_rcvd(node, ele_idx, src, app_idx, net_idx, + size, data); +} + +static void send_fd_msg_rcvd(struct l_io *io, uint8_t ele_idx, + uint16_t src, uint16_t dst, + const struct mesh_virtual *virt, + uint16_t app_idx, + uint16_t size, const uint8_t *data) +{ + struct fd_msg *msg = fd_msg_new(ele_idx, src, size, data, APP_KEY_MSG); + + msg->app.app_idx = app_idx; + msg->app.dst = dst; + + if (virt) + memcpy(msg->app.label, virt, sizeof(msg->app.label)); + + fd_msg_send(io, msg, size); +} + + +static void send_dbus_msg_rcvd(struct mesh_node *node, uint8_t ele_idx, uint16_t src, uint16_t dst, const struct mesh_virtual *virt, uint16_t app_idx, @@ -863,6 +968,22 @@ static void send_msg_rcvd(struct mesh_node *node, uint8_t ele_idx, l_dbus_send(dbus, msg); } +static void send_msg_rcvd(struct mesh_node *node, uint8_t ele_idx, + uint16_t src, uint16_t dst, + const struct mesh_virtual *virt, + uint16_t app_idx, + uint16_t size, const uint8_t *data) +{ + struct l_io *io = node_get_fd_io(node); + + if (io) + send_fd_msg_rcvd(io, ele_idx, src, dst, virt, app_idx, + size, data); + else + send_dbus_msg_rcvd(node, ele_idx, src, dst, virt, app_idx, + size, data); +} + bool mesh_model_rx(struct mesh_node *node, bool szmict, uint32_t seq0, uint32_t seq, uint32_t iv_index, uint16_t net_idx, uint16_t src, uint16_t dst, @@ -986,6 +1107,7 @@ bool mesh_model_rx(struct mesh_node *node, bool szmict, uint32_t seq0, send_msg_rcvd(node, i, src, dst, decrypt_virt, forward.app_idx, forward.size, forward.data); + else if (decrypt_idx == APP_IDX_DEV_REMOTE || decrypt_idx == APP_IDX_DEV_LOCAL) send_dev_key_msg_rcvd(node, i, src, decrypt_idx, diff --git a/mesh/node.c b/mesh/node.c index 6140fdf9f..e00bed785 100644 --- a/mesh/node.c +++ b/mesh/node.c @@ -26,6 +26,8 @@ #include #include #include +#include +#include #include @@ -105,6 +107,7 @@ struct mesh_node { uint8_t proxy; uint8_t friend; uint8_t beacon; + struct l_io *fd_io; }; struct node_import { @@ -260,6 +263,7 @@ static void set_defaults(struct mesh_node *node) MESH_MODE_UNSUPPORTED; node->ttl = TTL_MASK; node->seq_number = DEFAULT_SEQUENCE_NUMBER; + node->fd_io = NULL; } static struct mesh_node *node_new(const uint8_t uuid[16]) @@ -341,6 +345,13 @@ static void free_node_resources(void *data) mesh_agent_remove(node->agent); mesh_config_release(node->cfg); mesh_net_free(node->net); + + if (node->fd_io) + { + l_io_destroy(node->fd_io); + node->fd_io = NULL; + } + l_free(node->storage_dir); l_free(node); } @@ -745,6 +756,11 @@ uint16_t node_get_crpl(struct mesh_node *node) return node->comp.crpl; } +struct l_io *node_get_fd_io(struct mesh_node *node) +{ + return node->fd_io; +} + uint8_t node_relay_mode_get(struct mesh_node *node, uint8_t *count, uint16_t *interval) { @@ -1650,6 +1666,53 @@ static void send_managed_objects_request(const char *destination, req, l_free, DEFAULT_DBUS_TIMEOUT); } +static void fd_io_hup(struct l_io *io, void *user_data) +{ + struct mesh_node *node = user_data; + + node->fd_io = NULL; + + l_io_destroy(io); +} + +static struct l_io *fd_io_new(struct mesh_node *node, int *fd) +{ + struct l_io *io; + int fds[2]; + + if (socketpair(AF_LOCAL, SOCK_DGRAM | SOCK_NONBLOCK | SOCK_CLOEXEC, + 0, fds) < 0) + { + return NULL; + } + + io = l_io_new(fds[0]); + if (!io) + { + goto fail; + } + + l_io_set_close_on_destroy(io, true); + + if (!l_io_set_disconnect_handler(io, fd_io_hup, node, NULL)) + { + goto fail; + } + + *fd = fds[1]; + + return io; + +fail: + if (io) + l_io_destroy(io); + + close(fds[0]); + close(fds[1]); + + return NULL; +} + /* Establish relationship between application and mesh node */ void node_attach(const char *app_root, const char *sender, uint64_t token, node_ready_func_t cb, void *user_data) @@ -1770,8 +1833,16 @@ static void build_element_config(void *a, void *b) l_dbus_message_builder_leave_struct(builder); } +static void append_fd(struct l_dbus_message_builder *builder, ...) +{ + va_list args; + va_start(args, builder); + l_dbus_message_builder_append_from_valist(builder, "h", args); + va_end(args); +} + void node_build_attach_reply(struct mesh_node *node, - struct l_dbus_message *reply) + struct l_dbus_message *reply, bool use_fd) { struct l_dbus_message_builder *builder; @@ -1784,6 +1855,16 @@ void node_build_attach_reply(struct mesh_node *node, l_dbus_message_builder_enter_array(builder, "(ya(qa{sv}))"); l_queue_foreach(node->elements, build_element_config, builder); l_dbus_message_builder_leave_array(builder); + + if (use_fd) + { + int fd = -1; + node->fd_io = fd_io_new(node, &fd); + append_fd(builder, fd); + + close(fd); + } + l_dbus_message_builder_finalize(builder); l_dbus_message_builder_destroy(builder); } diff --git a/mesh/node.h b/mesh/node.h index e26d410c8..6d0696824 100644 --- a/mesh/node.h +++ b/mesh/node.h @@ -23,6 +23,7 @@ struct mesh_io; struct mesh_agent; struct mesh_config; struct mesh_config_node; +struct l_io; typedef void (*node_ready_func_t) (void *user_data, int status, struct mesh_node *node); @@ -77,13 +78,14 @@ uint8_t node_friend_mode_get(struct mesh_node *node); const char *node_get_element_path(struct mesh_node *node, uint8_t ele_idx); const char *node_get_owner(struct mesh_node *node); const char *node_get_app_path(struct mesh_node *node); +struct l_io *node_get_fd_io(struct mesh_node *node); bool node_add_pending_local(struct mesh_node *node, void *info); void node_attach_io_all(struct mesh_io *io); void node_attach_io(struct mesh_node *node, struct mesh_io *io); void node_attach(const char *app_root, const char *sender, uint64_t token, node_ready_func_t cb, void *user_data); void node_build_attach_reply(struct mesh_node *node, - struct l_dbus_message *reply); + struct l_dbus_message *reply, bool use_fd); void node_create(const char *app_root, const char *sender, const uint8_t *uuid, node_ready_func_t cb, void *user_data); void node_import(const char *app_root, const char *sender, const uint8_t *uuid,