From 99d303ac2739e65a02fbbc325b74ad6fcac63cc2 Mon Sep 17 00:00:00 2001 From: "Jason A. Donenfeld" Date: Fri, 5 Jun 2015 15:58:00 +0200 Subject: Initial commit --- src/packets.h | 61 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 61 insertions(+) create mode 100644 src/packets.h (limited to 'src/packets.h') diff --git a/src/packets.h b/src/packets.h new file mode 100644 index 0000000..a34acb9 --- /dev/null +++ b/src/packets.h @@ -0,0 +1,61 @@ +/* Copyright 2015-2016 Jason A. Donenfeld . All Rights Reserved. */ + +#ifndef PACKETS_H +#define PACKETS_H + +#include "noise.h" +#include "messages.h" +#include "socket.h" + +#include + +enum { + MAX_QUEUED_HANDSHAKES = 4096, + MAX_BURST_HANDSHAKES = 16 +}; + +/* AF41, plus 00 ECN */ +#define HANDSHAKE_DSCP 0b10001000 + +struct wireguard_device; +struct wireguard_peer; +struct sk_buff; + +/* receive.c */ +void packet_receive(struct wireguard_device *wg, struct sk_buff *skb); + +/* send.c */ +int packet_send_queue(struct wireguard_peer *peer); +void packet_send_keepalive(struct wireguard_peer *peer); +void packet_send_handshake_initiation(struct wireguard_peer *peer); +void packet_send_handshake_response(struct wireguard_peer *peer); +void packet_send_handshake_cookie(struct wireguard_device *wg, struct sk_buff *initiating_skb, void *data, size_t data_len, __le32 sender_index); + +void packet_queue_send_handshake_initiation(struct wireguard_peer *peer); +void packet_process_queued_handshake_packets(struct work_struct *work); +void packet_send_queued_handshakes(struct work_struct *work); + + +/* data.c */ +struct packet_data_encryption_ctx { + struct padata_priv padata; + struct sk_buff *skb; + void (*callback)(struct sk_buff *, struct wireguard_peer *); + struct wireguard_peer *peer; + size_t plaintext_len, trailer_len; + unsigned int num_frags; + struct sk_buff *trailer; + struct noise_keypair *keypair; + uint64_t nonce; +}; + +int packet_create_data(struct sk_buff *skb, struct wireguard_peer *peer, void(*callback)(struct sk_buff *, struct wireguard_peer *), bool parallel); +void packet_consume_data(struct sk_buff *skb, size_t offset, struct wireguard_device *wg, void(*callback)(struct sk_buff *, struct wireguard_peer *, struct sockaddr_storage *, bool used_new_key, int err)); + +#define DATA_PACKET_HEAD_ROOM ALIGN(sizeof(struct message_data) + max(sizeof(struct packet_data_encryption_ctx), SKB_HEADER_LEN), 4) + +#ifdef DEBUG +void packet_counter_selftest(void); +#endif + +#endif -- cgit v1.2.3-59-g8ed1b