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author | Sander Vrijders <[email protected]> | 2017-04-28 11:51:59 +0000 |
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committer | dimitri staessens <[email protected]> | 2017-04-28 11:51:59 +0000 |
commit | 256d83081b93f39ad2e3f945b8b3d00e50c48972 (patch) | |
tree | 414549053101f95fb0985fb68a7f3b9ea9bb18e5 /src/ipcpd/normal/shm_pci.c | |
parent | 4f9f6d4c9a5930166220244936ecdb040a8d7450 (diff) | |
parent | 9177b0f3f72203cb6e18ee59c98b531a698d7f19 (diff) | |
download | ouroboros-256d83081b93f39ad2e3f945b8b3d00e50c48972.tar.gz ouroboros-256d83081b93f39ad2e3f945b8b3d00e50c48972.zip |
Merged in sandervrijders/ouroboros/be-frct-api (pull request #497)
ipcpd: normal: Split connection establishment
Diffstat (limited to 'src/ipcpd/normal/shm_pci.c')
-rw-r--r-- | src/ipcpd/normal/shm_pci.c | 242 |
1 files changed, 0 insertions, 242 deletions
diff --git a/src/ipcpd/normal/shm_pci.c b/src/ipcpd/normal/shm_pci.c deleted file mode 100644 index e6cd1042..00000000 --- a/src/ipcpd/normal/shm_pci.c +++ /dev/null @@ -1,242 +0,0 @@ -/* - * Ouroboros - Copyright (C) 2016 - 2017 - * - * Protocol Control Information in Shared Memory Map - * - * Dimitri Staessens <[email protected]> - * Sander Vrijders <[email protected]> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program 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 General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#include <ouroboros/config.h> -#include <ouroboros/errno.h> -#include <ouroboros/crc32.h> -#include <ouroboros/rib.h> - -#include "dt_const.h" -#include "shm_pci.h" -#include "ribconfig.h" - -#include <stdlib.h> -#include <string.h> -#include <assert.h> - -#define PDU_TYPE_SIZE 1 -#define QOS_ID_SIZE 1 -#define DEFAULT_TTL 60 -#define TTL_SIZE 1 -#define CHK_SIZE 4 - -struct { - struct dt_const dtc; - size_t head_size; - size_t tail_size; - - /* offsets */ - size_t dst_addr_o; - size_t src_addr_o; - size_t dst_cep_id_o; - size_t src_cep_id_o; - size_t pdu_length_o; - size_t seqno_o; - size_t qos_id_o; - size_t ttl_o; -} pci_info; - - -static void ser_pci_head(uint8_t * head, - struct pci * pci) -{ - uint8_t ttl = DEFAULT_TTL; - - assert(head); - assert(pci); - - /* FIXME: Add check and operations for Big Endian machines */ - memcpy(head, &pci->pdu_type, PDU_TYPE_SIZE); - memcpy(head + pci_info.dst_addr_o, &pci->dst_addr, - pci_info.dtc.addr_size); - memcpy(head + pci_info.src_addr_o, &pci->src_addr, - pci_info.dtc.addr_size); - memcpy(head + pci_info.dst_cep_id_o, &pci->dst_cep_id, - pci_info.dtc.cep_id_size); - memcpy(head + pci_info.src_cep_id_o, &pci->src_cep_id, - pci_info.dtc.cep_id_size); - memcpy(head + pci_info.pdu_length_o, &pci->pdu_length, - pci_info.dtc.pdu_length_size); - memcpy(head + pci_info.seqno_o, &pci->seqno, - pci_info.dtc.seqno_size); - memcpy(head + pci_info.qos_id_o, &pci->qos_id, QOS_ID_SIZE); - if (pci_info.dtc.has_ttl) - memcpy(head + pci_info.ttl_o, &ttl, TTL_SIZE); -} - -int shm_pci_init(void) -{ - /* read dt constants from the RIB */ - if (rib_read(BOOT_PATH "/dt/const/addr_size", - &pci_info.dtc.addr_size, - sizeof(pci_info.dtc.addr_size)) < 0 || - rib_read(BOOT_PATH "/dt/const/cep_id_size", - &pci_info.dtc.cep_id_size, - sizeof(pci_info.dtc.cep_id_size)) < 0 || - rib_read(BOOT_PATH "/dt/const/seqno_size", - &pci_info.dtc.seqno_size, - sizeof(pci_info.dtc.seqno_size)) < 0 || - rib_read(BOOT_PATH "/dt/const/pdu_length_size", - &pci_info.dtc.pdu_length_size, - sizeof(pci_info.dtc.pdu_length_size)) < 0 || - rib_read(BOOT_PATH "/dt/const/has_ttl", - &pci_info.dtc.has_ttl, - sizeof(pci_info.dtc.has_ttl)) < 0 || - rib_read(BOOT_PATH "/dt/const/has_chk", - &pci_info.dtc.has_chk, - sizeof(pci_info.dtc.has_chk)) < 0 || - rib_read(BOOT_PATH "/dt/const/min_pdu_size", - &pci_info.dtc.min_pdu_size, - sizeof(pci_info.dtc.min_pdu_size)) < 0 || - rib_read(BOOT_PATH "/dt/const/max_pdu_size", - &pci_info.dtc.max_pdu_size, - sizeof(pci_info.dtc.max_pdu_size)) < 0) - return -1; - - pci_info.dst_addr_o = PDU_TYPE_SIZE; - pci_info.src_addr_o = pci_info.dst_addr_o + pci_info.dtc.addr_size; - pci_info.dst_cep_id_o = pci_info.src_addr_o + pci_info.dtc.addr_size; - pci_info.src_cep_id_o = pci_info.dst_cep_id_o - + pci_info.dtc.cep_id_size; - pci_info.pdu_length_o = pci_info.src_cep_id_o - + pci_info.dtc.cep_id_size; - pci_info.seqno_o = pci_info.pdu_length_o + pci_info.dtc.pdu_length_size; - pci_info.qos_id_o = pci_info.seqno_o + pci_info.dtc.seqno_size; - pci_info.ttl_o = pci_info.qos_id_o + QOS_ID_SIZE; - - pci_info.head_size = pci_info.ttl_o; - - if (pci_info.dtc.has_ttl) - pci_info.head_size += TTL_SIZE; - - pci_info.tail_size = pci_info.dtc.has_chk ? CHK_SIZE : 0; - - return 0; -} - -void shm_pci_fini(void) { - return; -} - -int shm_pci_ser(struct shm_du_buff * sdb, - struct pci * pci) -{ - uint8_t * head; - uint8_t * tail; - - assert(sdb); - assert(pci); - - head = shm_du_buff_head_alloc(sdb, pci_info.head_size); - if (head == NULL) - return -EPERM; - - ser_pci_head(head, pci); - - if (pci_info.dtc.has_chk) { - tail = shm_du_buff_tail_alloc(sdb, pci_info.tail_size); - if (tail == NULL) { - shm_du_buff_head_release(sdb, pci_info.head_size); - return -EPERM; - } - - crc32((uint32_t *) tail, head, tail - head); - } - - return 0; -} - -buffer_t * shm_pci_ser_buf(buffer_t * buf, - struct pci * pci) -{ - buffer_t * buffer; - - assert(buf); - assert(pci); - - buffer = malloc(sizeof(*buffer)); - if (buffer == NULL) - return NULL; - - buffer->len = buf->len + pci_info.head_size + - pci_info.tail_size; - - buffer->data = malloc(buffer->len); - if (buffer->data == NULL) { - free(buffer); - return NULL; - } - - ser_pci_head(buffer->data, pci); - memcpy(buffer->data + pci_info.head_size, - buf->data, buf->len); - - if (pci_info.dtc.has_chk) - crc32((uint32_t *) (buffer->data + - pci_info.head_size + buf->len), - buffer->data, - pci_info.head_size + buf->len); - - return buffer; -} - -void shm_pci_des(struct shm_du_buff * sdb, - struct pci * pci) -{ - uint8_t * head; - - assert(sdb); - assert(pci); - - head = shm_du_buff_head(sdb); - - /* FIXME: Add check and operations for Big Endian machines */ - memcpy(&pci->pdu_type, head, PDU_TYPE_SIZE); - memcpy(&pci->dst_addr, head + pci_info.dst_addr_o, - pci_info.dtc.addr_size); - memcpy(&pci->src_addr, head + pci_info.src_addr_o, - pci_info.dtc.addr_size); - memcpy(&pci->dst_cep_id, head + pci_info.dst_cep_id_o, - pci_info.dtc.cep_id_size); - memcpy(&pci->src_cep_id, head + pci_info.src_cep_id_o, - pci_info.dtc.cep_id_size); - memcpy(&pci->pdu_length, head + pci_info.pdu_length_o, - pci_info.dtc.pdu_length_size); - memcpy(&pci->seqno, head + pci_info.seqno_o, - pci_info.dtc.seqno_size); - memcpy(&pci->qos_id, head + pci_info.qos_id_o, QOS_ID_SIZE); - - if (pci_info.dtc.has_ttl) { - --*(head + pci_info.ttl_o); /* decrease TTL */ - memcpy(&pci->ttl, head + pci_info.ttl_o, TTL_SIZE); - } else { - pci->ttl = 1; - } -} - -void shm_pci_shrink(struct shm_du_buff * sdb) -{ - assert(sdb); - - shm_du_buff_head_release(sdb, pci_info.head_size); - shm_du_buff_tail_release(sdb, pci_info.tail_size); -} |