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Commit f110b5d9 authored by Hansong Zhang's avatar Hansong Zhang Committed by Automerger Merge Worker
Browse files

RoundRobinScheduler: Add multi priority support am: 5b0c0580 am: 015850a8 am: 6919120d 

Original change: https://android-review.googlesource.com/c/platform/system/bt/+/1551784

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I297be56a5b94f5bf4b12fc79596e1b0852038311
parents 008c3d17 6919120d

system/gd/common/multi_priority_queue.h

+6 −0
Original line number Diff line number Diff line
@@ -54,6 +54,12 @@ class MultiPriorityQueue { 
    next_to_dequeue_.push(priority);

  }



  // Push the item with specified priority

  void push(T&& t, int priority = 0) {

    queues_[priority].push(std::forward<T>(t));

    next_to_dequeue_.push(priority);

  }



  // Pop the item in the front

  void pop() {

    queues_[next_to_dequeue_.top()].pop();

system/gd/hci/acl_manager.cc

+4 −0
Original line number Diff line number Diff line
@@ -249,6 +249,10 @@ void AclManager::HACK_SetScoDisconnectCallback(std::function<void(uint16_t, uint 
  pimpl_->classic_impl_->HACK_SetScoDisconnectCallback(callback);

}



void AclManager::HACK_SetAclTxPriority(uint8_t handle, bool high_priority) {

  CallOn(pimpl_->round_robin_scheduler_, &RoundRobinScheduler::SetLinkPriority, handle, high_priority);

}



void AclManager::ListDependencies(ModuleList* list) {

  list->add<HciLayer>();

  list->add<Controller>();

system/gd/hci/acl_manager.h

+4 −0
Original line number Diff line number Diff line
@@ -39,6 +39,7 @@ class SecurityModule; 
namespace shim {

class Btm;

void L2CA_UseLegacySecurityModule();

bool L2CA_SetAclPriority(uint16_t, bool);

}



namespace hci {
@@ -46,6 +47,7 @@ namespace hci { 
class AclManager : public Module {

 friend class bluetooth::shim::Btm;

 friend void bluetooth::shim::L2CA_UseLegacySecurityModule();

 friend bool bluetooth::shim::L2CA_SetAclPriority(uint16_t, bool);



public:

 AclManager();
@@ -129,6 +131,8 @@ private: 
 // Hack for the shim to get SCO disconnect callback.  Shim needs to post to their handler!

 virtual void HACK_SetScoDisconnectCallback(std::function<void(uint16_t /* handle */, uint8_t /* reason */)>);



 virtual void HACK_SetAclTxPriority(uint8_t handle, bool high_priority);



 struct impl;

 std::unique_ptr<impl> pimpl_;

system/gd/hci/acl_manager/round_robin_scheduler.cc

+19 −4
Original line number Diff line number Diff line
@@ -67,6 +67,15 @@ void RoundRobinScheduler::Unregister(uint16_t handle) { 
  starting_point_ = acl_queue_handlers_.begin();

}



void RoundRobinScheduler::SetLinkPriority(uint16_t handle, bool high_priority) {

  auto acl_queue_handler = acl_queue_handlers_.find(handle);

  if (acl_queue_handler == acl_queue_handlers_.end()) {

    LOG_WARN("handle %d is invalid", handle);

    return;

  }

  acl_queue_handler->second.high_priority_ = high_priority;

}



uint16_t RoundRobinScheduler::GetCredits() {

  return acl_packet_credits_;

}
@@ -121,14 +130,20 @@ void RoundRobinScheduler::buffer_packet(std::map<uint16_t, acl_queue_handler>::i 
  PacketBoundaryFlag packet_boundary_flag =

      (connection_type == ConnectionType::CLASSIC ? PacketBoundaryFlag::FIRST_AUTOMATICALLY_FLUSHABLE

                                                  : PacketBoundaryFlag::FIRST_NON_AUTOMATICALLY_FLUSHABLE);

  int acl_priority = acl_queue_handler->second.high_priority_ ? 1 : 0;

  if (packet->size() <= mtu) {

    fragments_to_send_.push(std::make_pair(

        connection_type, AclBuilder::Create(handle, packet_boundary_flag, broadcast_flag, std::move(packet))));

    fragments_to_send_.push(

        std::make_pair(

            connection_type, AclBuilder::Create(handle, packet_boundary_flag, broadcast_flag, std::move(packet))),

        acl_priority);

  } else {

    auto fragments = AclFragmenter(mtu, std::move(packet)).GetFragments();

    for (size_t i = 0; i < fragments.size(); i++) {

      fragments_to_send_.push(std::make_pair(

          connection_type, AclBuilder::Create(handle, packet_boundary_flag, broadcast_flag, std::move(fragments[i]))));

      fragments_to_send_.push(

          std::make_pair(

              connection_type,

              AclBuilder::Create(handle, packet_boundary_flag, broadcast_flag, std::move(fragments[i]))),

          acl_priority);

      packet_boundary_flag = PacketBoundaryFlag::CONTINUING_FRAGMENT;

    }

  }

system/gd/hci/acl_manager/round_robin_scheduler.h

+4 −1
Original line number Diff line number Diff line
@@ -19,6 +19,7 @@ 
#include <stdint.h>



#include "common/bidi_queue.h"

#include "common/multi_priority_queue.h"

#include "hci/acl_manager.h"

#include "hci/controller.h"

#include "hci/hci_packets.h"
@@ -41,11 +42,13 @@ class RoundRobinScheduler { 
    std::shared_ptr<acl_manager::AclConnection::Queue> queue_;

    bool dequeue_is_registered_ = false;

    uint16_t number_of_sent_packets_ = 0;  // Track credits

    bool high_priority_ = false;           // For A2dp use

  };



  void Register(ConnectionType connection_type, uint16_t handle,

                std::shared_ptr<acl_manager::AclConnection::Queue> queue);

  void Unregister(uint16_t handle);

  void SetLinkPriority(uint16_t handle, bool high_priority);

  uint16_t GetCredits();

  uint16_t GetLeCredits();
@@ -60,7 +63,7 @@ class RoundRobinScheduler { 
  os::Handler* handler_ = nullptr;

  Controller* controller_ = nullptr;

  std::map<uint16_t, acl_queue_handler> acl_queue_handlers_;

  std::queue<std::pair<ConnectionType, std::unique_ptr<AclBuilder>>> fragments_to_send_;

  common::MultiPriorityQueue<std::pair<ConnectionType, std::unique_ptr<AclBuilder>>, 2> fragments_to_send_;

  uint16_t max_acl_packet_credits_ = 0;

  uint16_t acl_packet_credits_ = 0;

  uint16_t le_max_acl_packet_credits_ = 0;