gfe-relnote: Default-initialize QUIC BBRv2 loss event threshold for exiting STARTUP from a flag. Protected by --gfe2_reloadable_flag_quic_default_to_bbr_v2.
PiperOrigin-RevId: 264298542
Change-Id: I304ab19e4820dec51d3f8ef53762a393f6b175fd
diff --git a/quic/qbone/platform/rtnetlink_message.h b/quic/qbone/platform/rtnetlink_message.h
new file mode 100644
index 0000000..0412d54
--- /dev/null
+++ b/quic/qbone/platform/rtnetlink_message.h
@@ -0,0 +1,126 @@
+// Copyright (c) 2019 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef QUICHE_QUIC_QBONE_PLATFORM_RTNETLINK_MESSAGE_H_
+#define QUICHE_QUIC_QBONE_PLATFORM_RTNETLINK_MESSAGE_H_
+
+#include <linux/netlink.h>
+#include <linux/rtnetlink.h>
+#include <stdint.h>
+#include <sys/socket.h>
+#include <sys/uio.h>
+
+#include <memory>
+#include <vector>
+
+#include "net/third_party/quiche/src/quic/platform/api/quic_logging.h"
+#include "net/third_party/quiche/src/quic/platform/api/quic_str_cat.h"
+
+namespace quic {
+
+// This base class is used to construct an array struct iovec that represents a
+// rtnetlink message as defined in man 7 rtnet. Padding for message header
+// alignment to conform NLMSG_* and RTA_* macros is added at the end of each
+// iovec::iov_base.
+class RtnetlinkMessage {
+ public:
+ virtual ~RtnetlinkMessage();
+
+ enum class Operation {
+ NEW,
+ DEL,
+ GET,
+ };
+
+ // Appends a struct rtattr to the message. nlmsg_len and rta_len is handled
+ // properly.
+ // Override this to perform check on type.
+ virtual void AppendAttribute(uint16_t type,
+ const void* data,
+ uint16_t data_length);
+
+ // Builds the array of iovec that can be fed into sendmsg directly.
+ std::unique_ptr<struct iovec[]> BuildIoVec() const;
+
+ // The size of the array of iovec if BuildIovec is called.
+ size_t IoVecSize() const;
+
+ protected:
+ // Subclass should add their own message header immediately after the
+ // nlmsghdr. Make this private to force the creation of such header.
+ RtnetlinkMessage(uint16_t type,
+ uint16_t flags,
+ uint32_t seq,
+ uint32_t pid,
+ const void* payload_header,
+ size_t payload_header_length);
+
+ // Adjusts nlmsg_len in the header assuming additional_data_length is appended
+ // at the end.
+ void AdjustMessageLength(size_t additional_data_length);
+
+ private:
+ // Convenient function for accessing the nlmsghdr.
+ struct nlmsghdr* MessageHeader();
+
+ std::vector<struct iovec> message_;
+};
+
+// Message for manipulating link level configuration as defined in man 7
+// rtnetlink. RTM_NEWLINK, RTM_DELLINK and RTM_GETLINK are supported.
+class LinkMessage : public RtnetlinkMessage {
+ public:
+ static LinkMessage New(RtnetlinkMessage::Operation request_operation,
+ uint16_t flags,
+ uint32_t seq,
+ uint32_t pid,
+ const struct ifinfomsg* interface_info_header);
+
+ private:
+ using RtnetlinkMessage::RtnetlinkMessage;
+};
+
+// Message for manipulating address level configuration as defined in man 7
+// rtnetlink. RTM_NEWADDR, RTM_NEWADDR and RTM_GETADDR are supported.
+class AddressMessage : public RtnetlinkMessage {
+ public:
+ static AddressMessage New(RtnetlinkMessage::Operation request_operation,
+ uint16_t flags,
+ uint32_t seq,
+ uint32_t pid,
+ const struct ifaddrmsg* interface_address_header);
+
+ private:
+ using RtnetlinkMessage::RtnetlinkMessage;
+};
+
+// Message for manipulating routing table as defined in man 7 rtnetlink.
+// RTM_NEWROUTE, RTM_DELROUTE and RTM_GETROUTE are supported.
+class RouteMessage : public RtnetlinkMessage {
+ public:
+ static RouteMessage New(RtnetlinkMessage::Operation request_operation,
+ uint16_t flags,
+ uint32_t seq,
+ uint32_t pid,
+ const struct rtmsg* route_message_header);
+
+ private:
+ using RtnetlinkMessage::RtnetlinkMessage;
+};
+
+class RuleMessage : public RtnetlinkMessage {
+ public:
+ static RuleMessage New(RtnetlinkMessage::Operation request_operation,
+ uint16_t flags,
+ uint32_t seq,
+ uint32_t pid,
+ const struct rtmsg* rule_message_header);
+
+ private:
+ using RtnetlinkMessage::RtnetlinkMessage;
+};
+
+} // namespace quic
+
+#endif // QUICHE_QUIC_QBONE_PLATFORM_RTNETLINK_MESSAGE_H_
