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Wed, 28 Oct 2020 04:52:58 -0700 (PDT) Date: Wed, 28 Oct 2020 19:52:46 +0800 Message-Id: <20201028195132.BlueZ.v5.1.I2fa28644a012f69c4665977e5816bcf8a51963f5@changeid> Mime-Version: 1.0 X-Mailer: git-send-email 2.29.0.rc2.309.g374f81d7ae-goog Subject: [BlueZ PATCH v5 1/2] mgmt: Add support of mgmt TLV API From: Howard Chung To: linux-bluetooth@vger.kernel.org Cc: apusaka@chromium.org, mmandlik@chromium.org, alainm@chromium.org, luiz.dentz@gmail.com, mcchou@chromium.org, Howard Chung Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org This adds API to send multiple TLVs to kernel, it is useful for mgmt set system config command. --- Changes in v5: - Implement mgmt_tlv API in src/shared/mgmt.c Changes in v4: - fix type of buf_len Changes in v3: - use iovec to fill buffer Changes in v2: - fix multiple line dereference issue src/shared/mgmt.c | 94 +++++++++++++++++++++++++++++++++++++++++++++++ src/shared/mgmt.h | 9 +++++ 2 files changed, 103 insertions(+) diff --git a/src/shared/mgmt.c b/src/shared/mgmt.c index b327b4088c6f..9ea9974f5535 100644 --- a/src/shared/mgmt.c +++ b/src/shared/mgmt.c @@ -68,6 +68,11 @@ struct mgmt_notify { void *user_data; }; +struct mgmt_tlv_list { + struct queue *tlv_queue; + uint16_t size; +}; + static void destroy_request(void *data) { struct mgmt_request *request = data; @@ -558,6 +563,95 @@ static struct mgmt_request *create_request(uint16_t opcode, uint16_t index, return request; } +struct mgmt_tlv_list *mgmt_tlv_list_new(void) +{ + struct mgmt_tlv_list *tlv_list = new0(struct mgmt_tlv_list, 1); + + tlv_list->tlv_queue = queue_new(); + tlv_list->size = 0; + + return tlv_list; +} + +static struct mgmt_tlv *mgmt_tlv_new(uint16_t type, uint8_t length, + void *value) +{ + struct mgmt_tlv *entry = malloc(sizeof(*entry) + length); + + if (!entry) + return NULL; + + entry->type = htobs(type); + entry->length = length; + memcpy(entry->value, value, length); + + return entry; +} + +static void mgmt_tlv_free(struct mgmt_tlv *entry) +{ + free(entry); +} + +void mgmt_tlv_list_free(struct mgmt_tlv_list *tlv_list) +{ + queue_destroy(tlv_list->tlv_queue, NULL); + free(tlv_list); +} + +bool mgmt_tlv_add(struct mgmt_tlv_list *tlv_list, uint16_t type, uint8_t length, + void *value) +{ + struct mgmt_tlv *entry = mgmt_tlv_new(type, length, value); + + if (!entry) + return false; + + if (!queue_push_tail(tlv_list->tlv_queue, entry)) { + mgmt_tlv_free(entry); + return false; + } + + tlv_list->size += sizeof(*entry) + entry->length; + return true; +} + +static void mgmt_tlv_to_buf(void *data, void *user_data) +{ + struct mgmt_tlv *entry = data; + uint8_t **buf_ptr = user_data; + size_t entry_size = sizeof(*entry) + entry->length; + + memcpy(*buf_ptr, entry, entry_size); + *buf_ptr += entry_size; +} + +unsigned int mgmt_send_tlv(struct mgmt *mgmt, uint16_t opcode, uint16_t index, + struct mgmt_tlv_list *tlv_list, + mgmt_request_func_t callback, + void *user_data, mgmt_destroy_func_t destroy) +{ + uint8_t *buf, *buf_ptr; + unsigned int ret; + + if (!tlv_list) + return 0; + + buf = malloc(tlv_list->size); + + if (!buf) + return 0; + + buf_ptr = buf; + + queue_foreach(tlv_list->tlv_queue, mgmt_tlv_to_buf, &buf_ptr); + + ret = mgmt_send(mgmt, opcode, index, tlv_list->size, (void *)buf, + callback, user_data, destroy); + free(buf); + return ret; +} + unsigned int mgmt_send(struct mgmt *mgmt, uint16_t opcode, uint16_t index, uint16_t length, const void *param, mgmt_request_func_t callback, diff --git a/src/shared/mgmt.h b/src/shared/mgmt.h index 6608faa7ed0f..74b8befd87bd 100644 --- a/src/shared/mgmt.h +++ b/src/shared/mgmt.h @@ -16,6 +16,7 @@ typedef void (*mgmt_destroy_func_t)(void *user_data); struct mgmt; +struct mgmt_tlv_list; struct mgmt *mgmt_new(int fd); struct mgmt *mgmt_new_default(void); @@ -33,6 +34,14 @@ bool mgmt_set_close_on_unref(struct mgmt *mgmt, bool do_close); typedef void (*mgmt_request_func_t)(uint8_t status, uint16_t length, const void *param, void *user_data); +struct mgmt_tlv_list *mgmt_tlv_list_new(void); +void mgmt_tlv_list_free(struct mgmt_tlv_list *tlv_list); +bool mgmt_tlv_add(struct mgmt_tlv_list *tlv_list, uint16_t type, uint8_t length, + void *value); +unsigned int mgmt_send_tlv(struct mgmt *mgmt, uint16_t opcode, uint16_t index, + struct mgmt_tlv_list *tlv_list, + mgmt_request_func_t callback, + void *user_data, mgmt_destroy_func_t destroy); unsigned int mgmt_send(struct mgmt *mgmt, uint16_t opcode, uint16_t index, uint16_t length, const void *param, mgmt_request_func_t callback,