From 4d9c4025222e19dac9a90cabe8bd886e47959ad6 Mon Sep 17 00:00:00 2001 From: Sander Vrijders Date: Thu, 17 Aug 2017 16:56:00 +0200 Subject: lib: Add basic FRCT mechanisms This adds the basic FRCT mechanisms to the library. Upon flow alloc or accept an FRCT instance is now created and used when reading or writing to the flow. The timerwheel has been refactored to allow recharging timers and removing them and is now part of the library. The first SDU sent over the connection has the DRF set and this initializes the connection. Sender and receiver inactivity timers are added. --- include/ouroboros/frct_pci.h | 69 ++++++++++++++++++++++++++++++++++++++++ include/ouroboros/hash.h | 8 ++++- include/ouroboros/shm_flow_set.h | 2 +- include/ouroboros/shm_rbuff.h | 2 +- include/ouroboros/timerwheel.h | 45 ++++++++++++++++++++++++++ 5 files changed, 123 insertions(+), 3 deletions(-) create mode 100644 include/ouroboros/frct_pci.h create mode 100644 include/ouroboros/timerwheel.h (limited to 'include') diff --git a/include/ouroboros/frct_pci.h b/include/ouroboros/frct_pci.h new file mode 100644 index 00000000..3a93ac1c --- /dev/null +++ b/include/ouroboros/frct_pci.h @@ -0,0 +1,69 @@ +/* + * Ouroboros - Copyright (C) 2016 - 2017 + * + * Protocol Control Information of FRCT + * + * Dimitri Staessens + * Sander Vrijders + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public License + * version 2.1 as published by the Free Software Foundation. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., http://www.fsf.org/about/contact/. + */ + +#ifndef OUROBOROS_LIB_FRCT_PCI_H +#define OUROBOROS_LIB_FRCT_PCI_H + +#include + +#include +#include + +struct frct_pci { + uint8_t type; + uint8_t flags; + uint64_t seqno; + uint64_t lwe; + uint64_t rwe; +}; + +enum pdu_types { + PDU_TYPE_DATA = 0x01, + PDU_TYPE_ACK = 0x02, + PDU_TYPE_FC = 0x04, + PDU_TYPE_ACK_AND_FC = (PDU_TYPE_ACK | PDU_TYPE_FC), + PDU_TYPE_CONFIG = 0x08, + PDU_TYPE_RENDEZ_VOUS = 0x10 +}; + +enum config_flags { + CONF_RESOURCE_CONTROL = 0x01, + CONF_RELIABLE = 0x02, + CONF_ERROR_CHECK = 0x04, + CONF_ORDERED = 0x08, + CONF_PARTIAL = 0x10 +}; + +enum data_flags { + FLAG_DATA_RUN = 0x01, + FLAG_MORE_FRAGMENTS = 0x02 +}; + +int frct_pci_ser(struct shm_du_buff * sdb, + struct frct_pci * pci, + bool error_check); + +int frct_pci_des(struct shm_du_buff * sdb, + struct frct_pci * pci, + bool error_check); + +#endif /* OUROBOROS_LIB_FRCT_PCI_H */ diff --git a/include/ouroboros/hash.h b/include/ouroboros/hash.h index db47c9fe..49160226 100644 --- a/include/ouroboros/hash.h +++ b/include/ouroboros/hash.h @@ -29,6 +29,7 @@ #include #endif #include +#include /* Hash algorithms */ enum hash_algo { @@ -58,8 +59,13 @@ enum hash_algo { uint16_t hash_len(enum hash_algo algo); +void mem_hash(enum hash_algo algo, + void * dst, + const uint8_t * buf, + size_t len); + void str_hash(enum hash_algo algo, - void * buf, + void * dst, const char * str); #endif /* OUROBOROS_LIB_HASH_H */ diff --git a/include/ouroboros/shm_flow_set.h b/include/ouroboros/shm_flow_set.h index 5c498336..be2f836b 100644 --- a/include/ouroboros/shm_flow_set.h +++ b/include/ouroboros/shm_flow_set.h @@ -58,6 +58,6 @@ void shm_flow_set_notify(struct shm_flow_set * set, ssize_t shm_flow_set_wait(const struct shm_flow_set * shm_set, size_t idx, int * fqueue, - const struct timespec * timeout); + const struct timespec * abstime); #endif /* OUROBOROS_SHM_FLOW_SET_H */ diff --git a/include/ouroboros/shm_rbuff.h b/include/ouroboros/shm_rbuff.h index 1557e50c..55d03b41 100644 --- a/include/ouroboros/shm_rbuff.h +++ b/include/ouroboros/shm_rbuff.h @@ -50,7 +50,7 @@ int shm_rbuff_write(struct shm_rbuff * rb, ssize_t shm_rbuff_read(struct shm_rbuff * rb); ssize_t shm_rbuff_read_b(struct shm_rbuff * rb, - const struct timespec * timeout); + const struct timespec * abstime); size_t shm_rbuff_queued(struct shm_rbuff * rb); diff --git a/include/ouroboros/timerwheel.h b/include/ouroboros/timerwheel.h new file mode 100644 index 00000000..e259c855 --- /dev/null +++ b/include/ouroboros/timerwheel.h @@ -0,0 +1,45 @@ +/* + * Ouroboros - Copyright (C) 2016 - 2017 + * + * Ring buffer for incoming SDUs + * + * Dimitri Staessens + * Sander Vrijders + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public License + * version 2.1 as published by the Free Software Foundation. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., http://www.fsf.org/about/contact/. + */ + +#ifndef OUROBOROS_LIB_TIMERWHEEL_H +#define OUROBOROS_LIB_TIMERWHEEL_H + +struct timerwheel; + +struct timerwheel * timerwheel_create(time_t resolution, + time_t max_delay); + +void timerwheel_destroy(struct timerwheel * tw); + +struct tw_f * timerwheel_start(struct timerwheel * tw, + void (* func)(void *), + void * arg, + time_t delay); /* ms */ + +int timerwheel_restart(struct timerwheel * tw, + struct tw_f * f, + time_t delay); /* ms */ + +void timerwheel_stop(struct timerwheel * tw, + struct tw_f * f); + +#endif /* OUROBOROS_LIB_TIMERWHEEL_H */ -- cgit v1.2.3