diff options
Diffstat (limited to 'meta-facebook/meta-wedge/recipes-wedge/oob-nic/oob-nic/src/main.c')
| -rw-r--r-- | meta-facebook/meta-wedge/recipes-wedge/oob-nic/oob-nic/src/main.c | 204 |
1 files changed, 0 insertions, 204 deletions
diff --git a/meta-facebook/meta-wedge/recipes-wedge/oob-nic/oob-nic/src/main.c b/meta-facebook/meta-wedge/recipes-wedge/oob-nic/oob-nic/src/main.c deleted file mode 100644 index 2dc1917..0000000 --- a/meta-facebook/meta-wedge/recipes-wedge/oob-nic/oob-nic/src/main.c +++ /dev/null @@ -1,204 +0,0 @@ -/* - * Copyright 2014-present Facebook. All Rights Reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * 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 <stdio.h> -#include <unistd.h> -#include <sys/select.h> -#include <sys/time.h> -#include <sys/errno.h> - -#include "nic.h" -#include "intf.h" - -#include "openbmc/log.h" -#include "facebook/wedge_eeprom.h" - -#define WAIT4PACKET_TIMEOUT 10000 /* 10ms */ -#define NO_RCV_CHECK_THRESHOLD 100 /* if not receiving pkt for 100 times (1s), - * check the NIC status - */ - -static void io_loop(oob_nic *nic, oob_intf *intf, const uint8_t mac[6]) { - - fd_set rfds; - int fd = oob_intf_get_fd(intf); - struct timeval timeout; - int rc; - int n_fds; - int n_io; - char buf[NIC_PKT_SIZE_MAX]; - int no_rcv = 0; - struct oob_nic_status_t sts; - - while (1) { - memset(&timeout, 0, sizeof(timeout)); - timeout.tv_sec = 0; - timeout.tv_usec = WAIT4PACKET_TIMEOUT; - - FD_ZERO(&rfds); - FD_SET(fd, &rfds); - - n_fds = select(fd + 1, &rfds, NULL, NULL, &timeout); - if (n_fds < 0) { - rc = errno; - LOG_ERR(rc, "Failed to select"); - continue; - } - - /* - * no matter what, receive packet from nic first, as the nic - * has small amount of memory. Without read, the sending could - * fail due to OOM. - * - * TODO: We might want to do something smart here to prevent attack or - * just rx flooding. Disable the Receive Enable first, drain the buffer - * with oob_nic_receive(), then Tx, and enable Receive Enable after. - */ - for (n_io = 0; n_io < 16; n_io++) { - rc = oob_nic_receive(nic, buf, sizeof(buf)); - if (rc <= 0) { - no_rcv++; - break; - } - oob_intf_send(intf, buf, rc); - no_rcv = 0; - } - - /* - * if we didn't receive any packet for NO_RCV_CHECK_THRESHOLD times, - * check the nic status - */ - if (no_rcv >= NO_RCV_CHECK_THRESHOLD) { - while(oob_nic_get_status(nic, &sts)) { - usleep(1000); - } - LOG_INFO("Failed to receive packets for %d times. NIC status is " - "%x.%x", NO_RCV_CHECK_THRESHOLD, sts.ons_byte1, sts.ons_byte2); - /* - * if the NIC went through initialization, or not set force up, need to - * re-program the filters by calling oob_nic_start(). - */ - if ((sts.ons_byte1 & NIC_STATUS_D1_INIT) - || !(sts.ons_byte1 & NIC_STATUS_D1_FORCE_UP)) { - while(oob_nic_start(nic, mac)) { - usleep(1000); - } - } - no_rcv = 0; - } - - if (n_fds > 0 && FD_ISSET(fd, &rfds)) { - for (n_io = 0; n_io < 1; n_io++) { - rc = oob_intf_receive(intf, buf, sizeof(buf)); - if (rc <= 0) { - break; - } - oob_nic_send(nic, buf, rc); - } - } - } -} - -int main(int argc, const char **argv) { - - uint8_t mac[6]; - oob_nic *nic; - oob_intf *intf; - struct wedge_eeprom_st eeprom; - int rc; - int from_eeprom = 0; - - nic = oob_nic_open(0, 0x49); - if (!nic) { - return -1; - } - - /* read EEPROM for the MAC */ - if (wedge_eeprom_parse(NULL, &eeprom) == 0) { - uint16_t carry; - int pos; - int adj; - /* - * OOB MAC comes from this range. We pick the last MAC from the range to - * use as OOB MAC. - */ - if (eeprom.fbw_mac_size > 128) { - LOG_ERR(EFAULT, "Extended MAC size (%d) is too large.", - eeprom.fbw_mac_size); - carry = 128; - } else { - carry = eeprom.fbw_mac_size; - } - - /* - * Due to various manufacture issues, some FC boards have MAC range overlap - * between LEFT and RIGHT sides. A SW workaround is done below to use the - * 8th (or 7th for right side FC) last MAC from the range for FC. - */ - if (strncmp(eeprom.fbw_location, "LEFT", FBW_EEPROM_F_LOCATION) == 0) { - adj = 8; - } else if (strncmp(eeprom.fbw_location, "RIGHT", FBW_EEPROM_F_LOCATION) - == 0) { - adj = 7; - } else { - adj = 1; - } - - if (carry < adj) { - LOG_ERR(EFAULT, "Invalid extended MAC size: %d", eeprom.fbw_mac_size); - } else { - carry -= adj; - memcpy(mac, eeprom.fbw_mac_base, sizeof(mac)); - for (pos = sizeof(mac) - 1; pos >= 0 && carry; pos--) { - uint16_t tmp = mac[pos] + carry; - mac[pos] = tmp & 0xFF; - carry = tmp >> 8; - } - from_eeprom = 1; - } - } - - if (!from_eeprom) { - while (oob_nic_get_mac(nic, mac)) { - usleep(1000); - } - /* - * increase the last byte of the mac by 1 and turn on the - * local administered bit to use it as the oob nic mac - */ - mac[0] |= 0x2; - mac[5]++; - } - - LOG_INFO("Retrieve MAC %x:%x:%x:%x:%x:%x from %s", - mac[0], mac[1], mac[2], mac[3], mac[4], mac[5], - (from_eeprom) ? "EEPROM" : "NIC"); - - /* create the tap interface */ - intf = oob_intf_create("oob", mac); - if (!intf) { - return -1; - } - - while (oob_nic_start(nic, mac)) { - usleep(1000); - } - - io_loop(nic, intf, mac); - - return 0; -} |
