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082bc48c32
https://review.lineageos.org/q/topic:P_asb_2022-05 https://review.lineageos.org/q/topic:P_asb_2022-06 https://review.lineageos.org/q/topic:P_asb_2022-07 https://review.lineageos.org/q/topic:P_asb_2022-08 https://review.lineageos.org/q/topic:P_asb_2022-09 https://review.lineageos.org/q/topic:P_asb_2022-10 https://review.lineageos.org/q/topic:P_asb_2022-11 https://review.lineageos.org/q/topic:P_asb_2022-12 https://review.lineageos.org/q/topic:P_asb_2023-01 https://review.lineageos.org/q/topic:P_asb_2023-02 https://review.lineageos.org/q/topic:P_asb_2023-03 https://review.lineageos.org/q/topic:P_asb_2023-04 https://review.lineageos.org/q/topic:P_asb_2023-05 https://review.lineageos.org/q/topic:P_asb_2023-06 https://review.lineageos.org/q/topic:P_asb_2023-07 accounted for via manifest change: https://review.lineageos.org/c/LineageOS/android_external_freetype/+/361250 https://review.lineageos.org/q/topic:P_asb_2023-08 accounted for via manifest change: https://review.lineageos.org/c/LineageOS/android_external_freetype/+/364606 accounted for via patches: https://review.lineageos.org/c/LineageOS/android_system_ca-certificates/+/365328 https://review.lineageos.org/q/topic:P_asb_2023-09 https://review.lineageos.org/q/topic:P_asb_2023-10 https://review.lineageos.org/q/topic:P_asb_2023-11 accounted for via patches: https://review.lineageos.org/c/LineageOS/android_system_ca-certificates/+/374916 https://review.lineageos.org/q/topic:P_asb_2023-12 https://review.lineageos.org/q/topic:P_asb_2024-01 https://review.lineageos.org/q/topic:P_asb_2024-02 https://review.lineageos.org/q/topic:P_asb_2024-03 https://review.lineageos.org/q/topic:P_asb_2024-04 Signed-off-by: Tavi <tavi@divested.dev>
81 lines
3.0 KiB
Diff
81 lines
3.0 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Qiyu Hu <qiyuh@google.com>
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Date: Wed, 13 Jun 2018 08:08:17 -0700
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Subject: [PATCH] Fix reliable write.
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We cannot simply assume the write is terminated in reliable write. When
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the reliable write value is longer than MTU allows, the current
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implementation can only send whatever MTU allows and naively set the
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status to GATT_SUCCESS, in the name of "application should verify handle
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offset and value are matched or not". That's why MTU negotiation is a
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workaround as people mention in b/37031096, which just fits all the write
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value into a single request.
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This also blocks our test on CtsVerifier.
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Bug: 37031096
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Test: Manual test and confirm that we don't simply send partial value
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Change-Id: I907877608f4672f24c002e630e58bf9133937a5e
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---
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stack/gatt/gatt_cl.cc | 21 ++++++++++-----------
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1 file changed, 10 insertions(+), 11 deletions(-)
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diff --git a/stack/gatt/gatt_cl.cc b/stack/gatt/gatt_cl.cc
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index f8d5bab92..16a7171f6 100644
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--- a/stack/gatt/gatt_cl.cc
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+++ b/stack/gatt/gatt_cl.cc
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@@ -297,7 +297,7 @@ void gatt_send_queue_write_cancel(tGATT_TCB& tcb, tGATT_CLCB* p_clcb,
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bool gatt_check_write_long_terminate(tGATT_TCB& tcb, tGATT_CLCB* p_clcb,
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tGATT_VALUE* p_rsp_value) {
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tGATT_VALUE* p_attr = (tGATT_VALUE*)p_clcb->p_attr_buf;
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- bool exec = false;
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+ bool terminate = false;
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tGATT_EXEC_FLAG flag = GATT_PREP_WRITE_EXEC;
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VLOG(1) << __func__;
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@@ -310,19 +310,18 @@ bool gatt_check_write_long_terminate(tGATT_TCB& tcb, tGATT_CLCB* p_clcb,
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/* data does not match */
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p_clcb->status = GATT_ERROR;
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flag = GATT_PREP_WRITE_CANCEL;
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- exec = true;
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+ terminate = true;
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} else /* response checking is good */
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{
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p_clcb->status = GATT_SUCCESS;
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/* update write offset and check if end of attribute value */
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- if ((p_attr->offset += p_rsp_value->len) >= p_attr->len) exec = true;
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+ if ((p_attr->offset += p_rsp_value->len) >= p_attr->len) terminate = true;
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}
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}
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- if (exec) {
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+ if (terminate && p_clcb->op_subtype != GATT_WRITE_PREPARE) {
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gatt_send_queue_write_cancel(tcb, p_clcb, flag);
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- return true;
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}
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- return false;
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+ return terminate;
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}
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/** Send prepare write */
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@@ -587,15 +586,15 @@ void gatt_process_prep_write_rsp(tGATT_TCB& tcb, tGATT_CLCB* p_clcb,
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memcpy(value.value, p, value.len);
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+ if (!gatt_check_write_long_terminate(tcb, p_clcb, &value)) {
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+ gatt_send_prepare_write(tcb, p_clcb);
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+ return;
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+ }
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+
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if (p_clcb->op_subtype == GATT_WRITE_PREPARE) {
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- p_clcb->status = GATT_SUCCESS;
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/* application should verify handle offset
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and value are matched or not */
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-
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gatt_end_operation(p_clcb, p_clcb->status, &value);
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- } else if (p_clcb->op_subtype == GATT_WRITE) {
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- if (!gatt_check_write_long_terminate(tcb, p_clcb, &value))
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- gatt_send_prepare_write(tcb, p_clcb);
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}
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}
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/*******************************************************************************
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