From patchwork Fri Jun 3 14:54:47 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?q?Fr=C3=A9d=C3=A9ric_Danis?= X-Patchwork-Id: 578560 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C6F3DC433EF for ; Fri, 3 Jun 2022 14:55:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230468AbiFCOzC (ORCPT ); Fri, 3 Jun 2022 10:55:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41454 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230474AbiFCOy6 (ORCPT ); Fri, 3 Jun 2022 10:54:58 -0400 Received: from bhuna.collabora.co.uk (bhuna.collabora.co.uk [46.235.227.227]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E302939140 for ; Fri, 3 Jun 2022 07:54:56 -0700 (PDT) Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: fdanis) with ESMTPSA id B41D61F45734 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1654268095; bh=yemU3lMc3LYLi4U6FkOON5xHPf49RSlOlszwblj3jhE=; h=From:To:Subject:Date:From; b=JSqGp3NR2u2eMgTsCjnH0VXHWUc0lySW/QfWzAajd1Ci6D6hdu8CIRCmJw8sy1TiJ wZpfEOOlMwI5rC+wd1UiwyW6fmFI4V0BkcqsEE6+x2ibK5NjJYzxrjkXtoK1hkXn+p PptwBKs/n/9JiwSH1FSvowtkMWPUA1R9LdPM5yHE4LtUNNQYP/+0dJRP+mtj+ukOyb TGLltR2WZ4/lLviJjgDvKk4+hRX+GzIirVJCG4CJ0kpax/jLgdTisD6HArE3OIaqMQ LzbgT2hR7wa5ErywnAFZd6cWc6dDbpjpRtxlSuLT02m9NY+PPSn3LoYHdgWv9H5Tc1 fS3hhywFZiAWQ== From: =?utf-8?q?Fr=C3=A9d=C3=A9ric_Danis?= To: linux-bluetooth@vger.kernel.org Subject: [PATCH v3] btproxy: Allow to select multiple BT controllers Date: Fri, 3 Jun 2022 16:54:47 +0200 Message-Id: <20220603145447.45655-1-frederic.danis@collabora.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org When running on a computer with a real Bluetooth controller (e.g. hci0) and multiple emulators (e.g. hci1 and hci2) it isn't possible to use the emulators with 2 test-runner vms. If btproxy is started without index parameter the first test-runner will use hci0, and btprox can't be started with multiple index parameters (e.g. -i1 -i2). This patch keeps the old beahvior when used without -i option, in this case it will try to use the first controller available. It also allows to select multiple controllers to be used by btproxy. --- changes since v2: - replace get_next_hci_index() by util_get_uid() tools/btproxy.c | 41 +++++++++++++++++++++++++---------------- 1 file changed, 25 insertions(+), 16 deletions(-) diff --git a/tools/btproxy.c b/tools/btproxy.c index 94ca1c7fd..305ef7893 100644 --- a/tools/btproxy.c +++ b/tools/btproxy.c @@ -48,8 +48,9 @@ struct sockaddr_hci { }; #define HCI_CHANNEL_USER 1 #define HCI_INDEX_NONE 0xffff +#define HCI_INDEX_MAX 16 -static uint16_t hci_index = HCI_INDEX_NONE; +static uint64_t hci_index = HCI_INDEX_NONE; static bool client_active = false; static bool debug_enabled = false; static bool emulate_ecc = false; @@ -533,13 +534,18 @@ static bool setup_proxy(int host_fd, bool host_shutdown, return true; } -static int open_channel(uint16_t index) +static int open_channel(uint64_t hci_index) { struct sockaddr_hci addr; int fd, err; + uint8_t index; - if (index == HCI_INDEX_NONE) - index = 0; + index = util_get_uid(&hci_index, HCI_INDEX_MAX); + if (index == 0) { + perror("No controller available"); + return -1; + } + index--; printf("Opening user channel for hci%u\n", index); @@ -558,12 +564,11 @@ static int open_channel(uint16_t index) err = -errno; close(fd); - /* Open next available controller if no specific index was - * provided and the error indicates that the controller. + /* Open next available controller if the error indicates + * that the controller is in use. */ - if (hci_index == HCI_INDEX_NONE && - (err == -EBUSY || err == -EUSERS)) - return open_channel(++index); + if (err == -EBUSY || err == -EUSERS) + return open_channel(hci_index); perror("Failed to bind Bluetooth socket"); return -1; @@ -601,12 +606,6 @@ static void server_callback(int fd, uint32_t events, void *user_data) return; } - if (client_active && hci_index != HCI_INDEX_NONE) { - fprintf(stderr, "Active client already present\n"); - close(host_fd); - return; - } - dev_fd = open_channel(hci_index); if (dev_fd < 0) { close(host_fd); @@ -800,6 +799,7 @@ int main(int argc, char *argv[]) for (;;) { int opt; + int index; opt = getopt_long(argc, argv, "rc:l::u::p:i:aezdvh", main_options, NULL); @@ -844,7 +844,13 @@ int main(int argc, char *argv[]) usage(); return EXIT_FAILURE; } - hci_index = atoi(str); + index = atoi(str) + 1; + if (index > HCI_INDEX_MAX) { + fprintf(stderr, "Invalid controller index\n"); + usage(); + return EXIT_FAILURE; + } + util_clear_uid(&hci_index, index); break; case 'a': type = HCI_AMP; @@ -884,6 +890,9 @@ int main(int argc, char *argv[]) return EXIT_FAILURE; } + if (hci_index == HCI_INDEX_NONE) + hci_index = 0; + mainloop_init(); if (connect_address || use_redirect) {