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Kernel: Add system for hardware checksum offload on received packets

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Bananymous
2026-06-29 00:24:48 +03:00
parent c0bd07174d
commit a6ad9b9b2e
13 changed files with 82 additions and 31 deletions
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2
kernel/include/kernel/Networking/IPv4Layer.h
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@@ -41,7 +41,7 @@ namespace Kernel
ARPTable& arp_table() { return *m_arp_table; }
BAN::ErrorOr<void> handle_ipv4_packet(NetworkInterface&, BAN::ConstByteSpan);
BAN::ErrorOr<void> handle_ipv4_packet(NetworkInterface&, BAN::ConstByteSpan, uint32_t validated_cksums);
virtual void unbind_socket(uint16_t port) override;
virtual BAN::ErrorOr<void> bind_socket_with_target(BAN::RefPtr<NetworkSocket>, const sockaddr* target_address, socklen_t target_address_len) override;

7
kernel/include/kernel/Networking/NetworkInterface.h
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@@ -23,6 +23,13 @@ namespace Kernel
ARP = 0x0806,
};
enum NetworkChecksum : uint32_t
{
CKSUM_IPV4 = 1 << 0,
CKSUM_TCP = 1 << 1,
CKSUM_UDP = 1 << 2,
};
class NetworkInterface : public CharacterDevice
{
BAN_NON_COPYABLE(NetworkInterface);

2
kernel/include/kernel/Networking/NetworkManager.h
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@@ -27,7 +27,7 @@ namespace Kernel
BAN::ErrorOr<BAN::RefPtr<Socket>> create_socket(Socket::Domain, Socket::Type, mode_t, uid_t, gid_t);
BAN::ErrorOr<void> connect_sockets(Socket::Domain, BAN::RefPtr<Socket>, BAN::RefPtr<Socket>);
void on_receive(NetworkInterface&, BAN::ConstByteSpan);
void on_receive(NetworkInterface&, BAN::ConstByteSpan, uint32_t validated_cksums);
private:
NetworkManager() {}

2
kernel/include/kernel/Networking/NetworkSocket.h
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@@ -35,7 +35,7 @@ namespace Kernel
virtual void get_protocol_header(BAN::ByteSpan header, BAN::ConstByteSpan payload, uint16_t dst_port, PseudoHeader) = 0;
virtual NetworkProtocol protocol() const = 0;
virtual void receive_packet(BAN::ConstByteSpan, const sockaddr* sender, socklen_t sender_len) = 0;
virtual void receive_packet(BAN::ConstByteSpan, const sockaddr* sender, socklen_t sender_len, uint32_t validated_cksums) = 0;
bool is_bound() const { return m_address_len >= static_cast<socklen_t>(sizeof(sa_family_t)) && m_address.ss_family != AF_UNSPEC; }
in_port_t bound_port() const

2
kernel/include/kernel/Networking/TCPSocket.h
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@@ -68,7 +68,7 @@ namespace Kernel
BAN::ErrorOr<long> ioctl_impl(int, void*) override;
void receive_packet(BAN::ConstByteSpan, const sockaddr* sender, socklen_t sender_len) override;
void receive_packet(BAN::ConstByteSpan, const sockaddr* sender, socklen_t sender_len, uint32_t validated_cksums) override;
bool can_read_impl() const override;
bool can_write_impl() const override;

2
kernel/include/kernel/Networking/UDPSocket.h
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@@ -31,7 +31,7 @@ namespace Kernel
void get_protocol_header(BAN::ByteSpan header, BAN::ConstByteSpan payload, uint16_t dst_port, PseudoHeader) override;
protected:
void receive_packet(BAN::ConstByteSpan, const sockaddr* sender, socklen_t sender_len) override;
void receive_packet(BAN::ConstByteSpan, const sockaddr* sender, socklen_t sender_len, uint32_t validated_cksums) override;
BAN::ErrorOr<void> connect_impl(const sockaddr*, socklen_t) override;
BAN::ErrorOr<void> bind_impl(const sockaddr* address, socklen_t address_len) override;