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[71.56.157.77]) by smtp.gmail.com with ESMTPSA id q15sm3699901pgk.11.2021.01.20.17.09.56 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 20 Jan 2021 17:09:56 -0800 (PST) From: Luiz Augusto von Dentz To: linux-bluetooth@vger.kernel.org Subject: [PATCH BlueZ] a2dp: Handle remote SEP disappearing Date: Wed, 20 Jan 2021 17:09:55 -0800 Message-Id: <20210121010955.1193543-1-luiz.dentz@gmail.com> X-Mailer: git-send-email 2.26.2 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org From: Luiz Augusto von Dentz Some devices (Sony WH-1000XM4) seems to dinamically change its endpoints depending on the configuration which may leave behind endpoints loaded from cache that are no longer valid. gh-issue: https://github.com/bluez/bluez/issues/85 --- profiles/audio/a2dp.c | 12 +++++++++ profiles/audio/avdtp.c | 55 +++++++++++++++++++++++++++++++++++------- profiles/audio/avdtp.h | 5 ++++ 3 files changed, 63 insertions(+), 9 deletions(-) diff --git a/profiles/audio/a2dp.c b/profiles/audio/a2dp.c index a333276e0..624d0d42d 100644 --- a/profiles/audio/a2dp.c +++ b/profiles/audio/a2dp.c @@ -1488,6 +1488,8 @@ static void remote_sep_free(void *data) { struct a2dp_remote_sep *sep = data; + avdtp_remote_sep_set_destroy(sep->sep, NULL, NULL); + free(sep->path); free(sep); } @@ -1874,6 +1876,14 @@ static const GDBusPropertyTable sep_properties[] = { { } }; +static void remote_sep_destroy(void *user_data) +{ + struct a2dp_remote_sep *sep = user_data; + + if (queue_remove(sep->chan->seps, sep)) + remove_remote_sep(sep); +} + static void register_remote_sep(void *data, void *user_data) { struct avdtp_remote_sep *rsep = data; @@ -1910,6 +1920,8 @@ static void register_remote_sep(void *data, void *user_data) DBG("Found remote SEP: %s", sep->path); + avdtp_remote_sep_set_destroy(rsep, sep, remote_sep_destroy); + done: queue_push_tail(chan->seps, sep); } diff --git a/profiles/audio/avdtp.c b/profiles/audio/avdtp.c index 1093a3543..b8ef5f682 100644 --- a/profiles/audio/avdtp.c +++ b/profiles/audio/avdtp.c @@ -308,8 +308,11 @@ struct avdtp_remote_sep { uint8_t media_type; struct avdtp_service_capability *codec; gboolean delay_reporting; + bool discovered; GSList *caps; /* of type struct avdtp_service_capability */ struct avdtp_stream *stream; + avdtp_remote_sep_destroy_t destroy; + void *user_data; }; struct avdtp_local_sep { @@ -1038,6 +1041,32 @@ static void avdtp_sep_set_state(struct avdtp *session, stream_free(stream); } +static void sep_free(gpointer data) +{ + struct avdtp_remote_sep *sep = data; + + if (sep->destroy) + sep->destroy(sep->user_data); + + g_slist_free_full(sep->caps, g_free); + g_free(sep); +} + +static void remove_disappeared(void *data, void *user_data) +{ + struct avdtp_remote_sep *sep = data; + struct avdtp *session = user_data; + + if (sep->discovered) + return; + + DBG("seid %d disappeared", sep->seid); + + session->seps = g_slist_remove(session->seps, sep); + + sep_free(sep); +} + static void finalize_discovery(struct avdtp *session, int err) { struct discover_callback *discover = session->discover; @@ -1051,6 +1080,9 @@ static void finalize_discovery(struct avdtp *session, int err) if (discover->id > 0) g_source_remove(discover->id); + if (!err) + g_slist_foreach(session->seps, remove_disappeared, session); + if (discover->cb) discover->cb(session, session->seps, err ? &avdtp_err : NULL, discover->user_data); @@ -1070,14 +1102,6 @@ static void release_stream(struct avdtp_stream *stream, struct avdtp *session) avdtp_sep_set_state(session, sep, AVDTP_STATE_IDLE); } -static void sep_free(gpointer data) -{ - struct avdtp_remote_sep *sep = data; - - g_slist_free_full(sep->caps, g_free); - g_free(sep); -} - static void remove_disconnect_timer(struct avdtp *session) { if (!session->dc_timer) @@ -2707,8 +2731,10 @@ static gboolean avdtp_discover_resp(struct avdtp *session, sep = find_remote_sep(session->seps, resp->seps[i].seid); if (sep && sep->type == resp->seps[i].type && sep->media_type == resp->seps[i].media_type && - sep->codec) + sep->codec) { + sep->discovered = true; continue; + } if (resp->seps[i].inuse && !stream) continue; @@ -2720,6 +2746,7 @@ static gboolean avdtp_discover_resp(struct avdtp *session, sep->seid = resp->seps[i].seid; sep->type = resp->seps[i].type; sep->media_type = resp->seps[i].media_type; + sep->discovered = true; memset(&req, 0, sizeof(req)); req.acp_seid = sep->seid; @@ -3325,6 +3352,16 @@ struct avdtp_remote_sep *avdtp_register_remote_sep(struct avdtp *session, return sep; } +void avdtp_remote_sep_set_destroy(struct avdtp_remote_sep *sep, void *user_data, + avdtp_remote_sep_destroy_t destroy) +{ + if (!sep) + return; + + sep->user_data = user_data; + sep->destroy = destroy; +} + static gboolean process_discover(gpointer data) { struct avdtp *session = data; diff --git a/profiles/audio/avdtp.h b/profiles/audio/avdtp.h index 7a1c109c2..b29d0621a 100644 --- a/profiles/audio/avdtp.h +++ b/profiles/audio/avdtp.h @@ -216,6 +216,11 @@ struct avdtp_remote_sep *avdtp_register_remote_sep(struct avdtp *session, GSList *caps, bool delay_reporting); +typedef void (*avdtp_remote_sep_destroy_t)(void *user_data); + +void avdtp_remote_sep_set_destroy(struct avdtp_remote_sep *sep, void *user_data, + avdtp_remote_sep_destroy_t destroy); + uint8_t avdtp_get_seid(struct avdtp_remote_sep *sep); uint8_t avdtp_get_type(struct avdtp_remote_sep *sep); -- 2.26.2