mirror of https://github.com/OISF/suricata
Add option on Tile-Gx for logging for fast.log alerts over PCIe
When running on a TILEncore-Gx PCIe card, setting the filetype of fast.log to pcie, will open a connection over PCIe to a host application caleld tile-pcie-logd, that receives the alert strings and writes them to a file on the host. The file name to open is also passed over the PCIe link. This allows running Suricata on the TILEncore-Gx PCIe card, but have the alerts logged to the host system's file system efficiently. The PCIe API that is used is the Tilera Packet Queue (PQ) API which can access PCIe from User Space, thus avoiding system calls. Created util-logopenfile-tile.c and util-logopen-tile.h for the TILE specific PCIe logging functionality. Using Write() and Close() function pointers in LogFileCtx, which default to standard write and close for files and sockets, but are changed to PCIe write and close functions when a PCIe channel is openned for logging. Moved Logging contex out of tm-modules.h into util-logopenfile.h, where it makes more sense. This required including util-logopenfile.h into a couple of alert-*.c files, which previously were getting the definitions from tm-modules.h. The source and Makefile for tile-pcie-logd are added in contrib/tile-pcie-logd. By default, the file name for fast.log specified in suricata.yaml is used as the filename on the host. An optional argument to tile-pcie-logd, --prefix=, can be added to prepend the supplied file path. For example, is the file in suricata.yaml is specified as "/var/log/fast.log" and --prefix="/tmp", then the file will be written to "/tmp/var/log/fast.log". Check for TILERA_ROOT environment variable before building tile_pcie_logd Building tile_pcie_logd on x86 requires the Tilera MDE for its PCIe libraries and API header files. Configure now checs for TILERA_ROOT before enabling builing tile_pcie_logd in contrib/tile_pcie_logdpull/822/head
Ken Steele
12 years ago
parent
2200dd61a1
commit
497575d38e
@ -1,3 +1,3 @@
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SUBDIRS = file_processor
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SUBDIRS = file_processor tile_pcie_logd
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EXTRA_DIST = suri-graphite
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EXTRA_DIST = suri-graphite
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@ -0,0 +1,339 @@
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||||||
|
be called something other than `show w' and `show c'; they could even be
|
||||||
|
mouse-clicks or menu items--whatever suits your program.
|
||||||
|
|
||||||
|
You should also get your employer (if you work as a programmer) or your
|
||||||
|
school, if any, to sign a "copyright disclaimer" for the program, if
|
||||||
|
necessary. Here is a sample; alter the names:
|
||||||
|
|
||||||
|
Yoyodyne, Inc., hereby disclaims all copyright interest in the program
|
||||||
|
`Gnomovision' (which makes passes at compilers) written by James Hacker.
|
||||||
|
|
||||||
|
<signature of Ty Coon>, 1 April 1989
|
||||||
|
Ty Coon, President of Vice
|
||||||
|
|
||||||
|
This General Public License does not permit incorporating your program into
|
||||||
|
proprietary programs. If your program is a subroutine library, you may
|
||||||
|
consider it more useful to permit linking proprietary applications with the
|
||||||
|
library. If this is what you want to do, use the GNU Lesser General
|
||||||
|
Public License instead of this License.
|
||||||
@ -0,0 +1,14 @@
|
|||||||
|
|
||||||
|
EXTRA_DIST = LICENSE README
|
||||||
|
|
||||||
|
if BUILD_PCIE_LOGGING
|
||||||
|
bin_PROGRAMS = tile_pcie_logd
|
||||||
|
|
||||||
|
tile_pcie_logd_SOURCE = tile_pcie_logd.c
|
||||||
|
|
||||||
|
AM_CFLAGS = -std=gnu99 -Wall -Werror -g -O2 -I$(TILERA_ROOT)/include \
|
||||||
|
-DTILEPCI_HOST
|
||||||
|
|
||||||
|
tile_pcie_logd_LDDADD = -pthread
|
||||||
|
|
||||||
|
endif
|
||||||
@ -0,0 +1,38 @@
|
|||||||
|
Introduction
|
||||||
|
------------
|
||||||
|
|
||||||
|
This application allows writing files to an x86 host from a TILEncore-Gx
|
||||||
|
PCIe card. The file name and data are sent over PCIe using the Tilera
|
||||||
|
Packet Queue API from an aplication running on the Tilera processor.
|
||||||
|
|
||||||
|
The original purpose is to write log files from Suricata (Intrusion
|
||||||
|
Dectection System) on the x86 host's file system.
|
||||||
|
|
||||||
|
Running The Logger
|
||||||
|
------------------
|
||||||
|
|
||||||
|
To run the application, set the TILERA_ROOT environment variable to
|
||||||
|
point to a valide Tilera MDE, then do:
|
||||||
|
|
||||||
|
make run
|
||||||
|
|
||||||
|
The application should be started before the application on the Tile
|
||||||
|
side that will be generating the log data.
|
||||||
|
|
||||||
|
By default, queue number 0 is used. The --queue_index=N command line
|
||||||
|
argument can be used to change the queue number.
|
||||||
|
|
||||||
|
If more than one TILEncore-Gx PCIe card is installed, the --card=M
|
||||||
|
argument changes to listening to card M.
|
||||||
|
|
||||||
|
Caveats
|
||||||
|
-------
|
||||||
|
|
||||||
|
Due to the fact that the host driver allocates 4MB physically
|
||||||
|
contiguous memory for the packet queue ring buffer, it is possible
|
||||||
|
that this allocation could fail on a host whose memory has been
|
||||||
|
considerably fragmented. If the host program exits with the following
|
||||||
|
error, reboot the host and run the test again.
|
||||||
|
|
||||||
|
Host: Failed to open '/dev/tilegxpci%d/packet_queue/t2h/0': Cannot
|
||||||
|
allocate memory
|
||||||
@ -0,0 +1,370 @@
|
|||||||
|
/* Copyright (C) 2013-2014 Tilera Corporation.
|
||||||
|
*
|
||||||
|
* You can copy, redistribute or modify this Program 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
|
||||||
|
* version 2 along with this program; if not, write to the Free Software
|
||||||
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
|
||||||
|
* 02110-1301, USA.
|
||||||
|
*/
|
||||||
|
|
||||||
|
/**
|
||||||
|
* \file
|
||||||
|
*
|
||||||
|
* \author Ken Steele, Tilera Corporation <suricata@tilera.com>
|
||||||
|
* \author Tom DeCanio <decanio.tom@gmail.com>
|
||||||
|
*
|
||||||
|
* Host side of PCIe alert logging from Suricata running on a
|
||||||
|
* TILEncore-Gx card.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#include <stdio.h>
|
||||||
|
#include <stdlib.h>
|
||||||
|
#include <sys/mman.h>
|
||||||
|
#include <sys/ioctl.h>
|
||||||
|
#include <sys/time.h>
|
||||||
|
#include <fcntl.h>
|
||||||
|
#include <malloc.h>
|
||||||
|
#include <unistd.h>
|
||||||
|
#include <stdint.h>
|
||||||
|
#include <string.h>
|
||||||
|
#include <errno.h>
|
||||||
|
#include <time.h>
|
||||||
|
#include <assert.h>
|
||||||
|
|
||||||
|
#include <asm/tilegxpci.h>
|
||||||
|
|
||||||
|
#define CHECK_SEQ_NUM 1
|
||||||
|
|
||||||
|
/* The "/dev/tilegxpci%d" device to be used. */
|
||||||
|
unsigned int card_index = 0;
|
||||||
|
|
||||||
|
unsigned int debug = 0;
|
||||||
|
|
||||||
|
/*
|
||||||
|
* When set, drop all alerts rather than write to file. This is for
|
||||||
|
* testing performance on a file system that can't write files fast
|
||||||
|
* enough.
|
||||||
|
*/
|
||||||
|
unsigned int drop_alerts = 0;
|
||||||
|
|
||||||
|
/* Packet queue index. */
|
||||||
|
unsigned int queue_index;
|
||||||
|
|
||||||
|
/* Prefix added to all file paths sent from PCIe card. */
|
||||||
|
char * path_prefix = NULL;
|
||||||
|
|
||||||
|
/* By default, the host ring buffer is 4MB in size and it consists of
|
||||||
|
* 1024 entries of 4KB buffers. Modify GXPCI_HOST_PQ_RING_ENTRIES in
|
||||||
|
* <asm/tilegxpci.h> to change the size of each buffer. To increase
|
||||||
|
* the total ring buffer size, re-configure the host kernel using
|
||||||
|
* CONFIG_FORCE_MAX_ZONEORDER.
|
||||||
|
*/
|
||||||
|
#ifdef GXPCI_HOST_PQ_SEGMENT_ENTRIES
|
||||||
|
/* New definitions for MDE 4.1.5 */
|
||||||
|
#define RING_BUF_ELEMS GXPCI_HOST_PQ_SEGMENT_ENTRIES
|
||||||
|
#define RING_BUF_ELEM_SIZE (HOST_PQ_SEGMENT_MAX_SIZE / GXPCI_HOST_PQ_SEGMENT_ENTRIES)
|
||||||
|
#else
|
||||||
|
/* Definitions prior to MDE 4.1.5 */
|
||||||
|
#define RING_BUF_ELEMS GXPCI_HOST_PQ_RING_ENTRIES
|
||||||
|
#define RING_BUF_ELEM_SIZE (HOST_PQ_RING_BUF_MAX_SIZE / GXPCI_HOST_PQ_RING_ENTRIES)
|
||||||
|
#endif
|
||||||
|
|
||||||
|
/*********************************************************************/
|
||||||
|
/* Host-Side Packet Consumer */
|
||||||
|
/*********************************************************************/
|
||||||
|
|
||||||
|
#define TAIL_UPDATE_LIMIT_ENABLE
|
||||||
|
|
||||||
|
#define OP_OPEN 1
|
||||||
|
#define OP_WRITE 2
|
||||||
|
#define OP_CLOSE 3
|
||||||
|
|
||||||
|
typedef struct {
|
||||||
|
uint32_t magic;
|
||||||
|
uint32_t fileno;
|
||||||
|
uint32_t op;
|
||||||
|
uint32_t seq;
|
||||||
|
volatile uint32_t len;
|
||||||
|
uint32_t next_offset;
|
||||||
|
char buf[];
|
||||||
|
} TrioMsg;
|
||||||
|
|
||||||
|
typedef struct {
|
||||||
|
FILE *fd;
|
||||||
|
} FDesc;
|
||||||
|
|
||||||
|
#define MAX_FDESC 1024
|
||||||
|
|
||||||
|
static FDesc *fdesc[MAX_FDESC];
|
||||||
|
|
||||||
|
void run_pcie_logging(void)
|
||||||
|
{
|
||||||
|
char dev_name[40];
|
||||||
|
int pq_fd;
|
||||||
|
unsigned int host_ring_buffer_size = RING_BUF_ELEMS * RING_BUF_ELEM_SIZE;
|
||||||
|
volatile TrioMsg *p;
|
||||||
|
|
||||||
|
printf("Waiting for PCIe logging data from card %d on queue %d...\n",
|
||||||
|
card_index, queue_index);
|
||||||
|
|
||||||
|
if (path_prefix) {
|
||||||
|
printf("PCIe logging into directory: '%s'\n", path_prefix);
|
||||||
|
fflush(stdout);
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Open the packet queue file. */
|
||||||
|
snprintf(dev_name, sizeof(dev_name), "/dev/tilegxpci%d/packet_queue/t2h/%d",
|
||||||
|
card_index, queue_index);
|
||||||
|
do {
|
||||||
|
pq_fd = open(dev_name, O_RDWR);
|
||||||
|
if (pq_fd < 0) {
|
||||||
|
sleep(1);
|
||||||
|
}
|
||||||
|
} while (pq_fd < 0);
|
||||||
|
|
||||||
|
/* mmap the register space. */
|
||||||
|
struct gxpci_host_pq_regs_app* pq_regs =
|
||||||
|
(struct gxpci_host_pq_regs_app*)
|
||||||
|
mmap(0, sizeof(struct gxpci_host_pq_regs_app),
|
||||||
|
PROT_READ | PROT_WRITE,
|
||||||
|
MAP_SHARED, pq_fd, TILEPCI_PACKET_QUEUE_INDICES_MMAP_OFFSET);
|
||||||
|
if (pq_regs == MAP_FAILED) {
|
||||||
|
fprintf(stderr, "Failed to mmap PCIe control registers.\n");
|
||||||
|
exit(EXIT_FAILURE);
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Configure and allocate the ring buffer for the receive queue. */
|
||||||
|
tilepci_packet_queue_info_t buf_info;
|
||||||
|
|
||||||
|
buf_info.buf_size = RING_BUF_ELEM_SIZE;
|
||||||
|
|
||||||
|
int err = ioctl(pq_fd, TILEPCI_IOC_SET_PACKET_QUEUE_BUF, &buf_info);
|
||||||
|
if (err < 0) {
|
||||||
|
fprintf(stderr, "Failed TILEPCI_IOC_SET_PACKET_QUEUE_BUF: %s\n",
|
||||||
|
strerror(errno));
|
||||||
|
abort();
|
||||||
|
}
|
||||||
|
|
||||||
|
/* On the host side, mmap the receive queue region. */
|
||||||
|
void* buffer =
|
||||||
|
mmap(0, host_ring_buffer_size, PROT_READ | PROT_WRITE,
|
||||||
|
MAP_SHARED, pq_fd, TILEPCI_PACKET_QUEUE_BUF_MMAP_OFFSET);
|
||||||
|
assert(buffer != MAP_FAILED);
|
||||||
|
|
||||||
|
/* On the host side, mmap the queue status. */
|
||||||
|
struct tlr_pq_status *pq_status =
|
||||||
|
mmap(0, sizeof(struct tlr_pq_status), PROT_READ | PROT_WRITE,
|
||||||
|
MAP_SHARED, pq_fd, TILEPCI_PACKET_QUEUE_STS_MMAP_OFFSET);
|
||||||
|
assert(pq_status != MAP_FAILED);
|
||||||
|
|
||||||
|
pq_regs->consumer_index = 0;
|
||||||
|
|
||||||
|
uint64_t packet_count = 0;
|
||||||
|
volatile uint32_t write;
|
||||||
|
uint32_t read = 0;
|
||||||
|
|
||||||
|
#ifdef CHECK_SEQ_NUM
|
||||||
|
uint32_t expect_seq = 1;
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#ifdef HOST_INTERRUPT_MODE
|
||||||
|
volatile uint32_t* producer_index = &(pq_status->drv_consumer_index);
|
||||||
|
#else
|
||||||
|
volatile uint32_t* producer_index = &(pq_regs->producer_index);
|
||||||
|
#endif
|
||||||
|
|
||||||
|
volatile uint32_t* consumer_index = &(pq_regs->consumer_index);
|
||||||
|
volatile enum gxpci_chan_status_t* status = &(pq_status->status);
|
||||||
|
|
||||||
|
while (1) {
|
||||||
|
if (*status == GXPCI_CHAN_RESET) {
|
||||||
|
printf("Tile to Host PCIe logging channel was reset.\n");
|
||||||
|
fflush(stdout);
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
// Get packets off the ring buffer by accessing the receive queue at
|
||||||
|
// the new write index.
|
||||||
|
write = *producer_index;
|
||||||
|
|
||||||
|
while (write != read) {
|
||||||
|
if (*status == GXPCI_CHAN_RESET) {
|
||||||
|
printf("Tile to Host PCIe logging channel was reset.\n");
|
||||||
|
fflush(stdout);
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
packet_count++;
|
||||||
|
|
||||||
|
p = (TrioMsg *)(buffer + ((read&(RING_BUF_ELEMS-1))*RING_BUF_ELEM_SIZE));
|
||||||
|
|
||||||
|
if (debug) {
|
||||||
|
fprintf(stdout, "got a message\n");
|
||||||
|
fprintf(stdout, "p->magic: %d\n", p->magic);
|
||||||
|
fprintf(stdout, "p->fileno: %d\n", p->fileno);
|
||||||
|
#ifdef CHECK_SEQ_NUM
|
||||||
|
fprintf(stdout, "p->seq: %d\n", p->seq);
|
||||||
|
#endif
|
||||||
|
fprintf(stdout, "p->len: %d\n", p->len);
|
||||||
|
fprintf(stdout, "p->next_offset: %d\n", p->next_offset);
|
||||||
|
fprintf(stdout, "p->buf: ");
|
||||||
|
fwrite(&p->buf, sizeof(char), p->len - offsetof(TrioMsg, buf), stdout);
|
||||||
|
fprintf(stdout, "\n");
|
||||||
|
fflush(stdout);
|
||||||
|
}
|
||||||
|
|
||||||
|
#ifdef CHECK_SEQ_NUM
|
||||||
|
if (p->seq != expect_seq) {
|
||||||
|
/* Check for a reset before reporting a bad sequence
|
||||||
|
* number to prevent confusing users. */
|
||||||
|
if (*status == GXPCI_CHAN_RESET) {
|
||||||
|
printf("Tile to Host PCIe logging channel was reset.\n");
|
||||||
|
fflush(stdout);
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
fprintf(stderr, "BAD sequence expected %d got %d\n", expect_seq, p->seq);
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
expect_seq = p->seq + 1;
|
||||||
|
#endif
|
||||||
|
|
||||||
|
switch (p->op) {
|
||||||
|
case OP_OPEN:
|
||||||
|
if (p->fileno < MAX_FDESC) {
|
||||||
|
fdesc[p->fileno] = malloc(sizeof(FDesc));
|
||||||
|
if (fdesc[p->fileno]) {
|
||||||
|
char mode[2];
|
||||||
|
mode[0] = p->buf[0];
|
||||||
|
mode[1] = '\0';
|
||||||
|
char *file_name = (char *)&p->buf[1];
|
||||||
|
if (path_prefix) {
|
||||||
|
/* Added path_prefix to the start of the
|
||||||
|
* file name. Added space for '\0' and '\'.
|
||||||
|
* By default, no prefix is added. */
|
||||||
|
int new_size = strlen(path_prefix) + strlen(file_name) + 1 + 1;
|
||||||
|
char *new_name = malloc(new_size);
|
||||||
|
if (!new_name) {
|
||||||
|
fprintf(stderr, "Failed to allocate memory for %s/%s\n",
|
||||||
|
path_prefix, file_name);
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
snprintf(new_name, new_size, "%s/%s",
|
||||||
|
path_prefix, file_name);
|
||||||
|
file_name = new_name;
|
||||||
|
}
|
||||||
|
if ((fdesc[p->fileno]->fd = fopen(file_name, mode)) == NULL) {
|
||||||
|
fprintf(stderr, "Could not open %s: %s\n",
|
||||||
|
file_name, strerror(errno));
|
||||||
|
} else {
|
||||||
|
printf("Opened '%s' for logging.\n", file_name);
|
||||||
|
fflush(stdout);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
} else {
|
||||||
|
fprintf(stderr, "File number %d exceeds Max of %d\n", p->fileno, MAX_FDESC);
|
||||||
|
}
|
||||||
|
break;
|
||||||
|
case OP_WRITE:
|
||||||
|
if (drop_alerts) {
|
||||||
|
/* TODO: Report alert count periodically. */
|
||||||
|
} else {
|
||||||
|
if (fdesc[p->fileno] && fdesc[p->fileno]->fd) {
|
||||||
|
fwrite(&p->buf, sizeof(char),
|
||||||
|
p->len - offsetof(TrioMsg, buf),
|
||||||
|
fdesc[p->fileno]->fd);
|
||||||
|
fflush(fdesc[p->fileno]->fd);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
break;
|
||||||
|
case OP_CLOSE:
|
||||||
|
if (fdesc[p->fileno] && fdesc[p->fileno]->fd) {
|
||||||
|
fclose( fdesc[p->fileno]->fd);
|
||||||
|
free(fdesc[p->fileno]);
|
||||||
|
fdesc[p->fileno] = NULL;
|
||||||
|
}
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
|
||||||
|
read++;
|
||||||
|
/* Update the read index register to inform the tile side
|
||||||
|
* that the packet has been read. */
|
||||||
|
|
||||||
|
#ifdef TAIL_UPDATE_LIMIT_ENABLE
|
||||||
|
if ((packet_count & 0x3f) == 0)
|
||||||
|
*consumer_index = read;
|
||||||
|
#else
|
||||||
|
*consumer_index = read;
|
||||||
|
#endif
|
||||||
|
}
|
||||||
|
}
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Match argument list option.
|
||||||
|
* Options ending in '=' take an additional value, which may be
|
||||||
|
* attached in the same argument or detached in the following
|
||||||
|
* argument.
|
||||||
|
* @param arglist Points to remaining argv, updated on match.
|
||||||
|
* @param option The option to match, ending in '=' if it takes a value.
|
||||||
|
* @return Value if option matches, NULL otherwise.
|
||||||
|
*/
|
||||||
|
char *shift_option(char ***arglist, const char* option)
|
||||||
|
{
|
||||||
|
char** args = *arglist;
|
||||||
|
char* arg = args[0], **rest = &args[1];
|
||||||
|
int optlen = strlen(option);
|
||||||
|
char* val = arg+optlen;
|
||||||
|
if (option[optlen - 1] != '=') {
|
||||||
|
if (strcmp(arg, option))
|
||||||
|
return NULL;
|
||||||
|
} else {
|
||||||
|
if (strncmp(arg, option, optlen-1))
|
||||||
|
return NULL;
|
||||||
|
if (arg[optlen- 1 ] == '\0')
|
||||||
|
val = *rest++;
|
||||||
|
else if (arg[optlen - 1] != '=')
|
||||||
|
return NULL;
|
||||||
|
}
|
||||||
|
*arglist = rest;
|
||||||
|
return val;
|
||||||
|
}
|
||||||
|
|
||||||
|
int main(int argc, char** argv)
|
||||||
|
{
|
||||||
|
char **args = &argv[1];
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Scan command line options.
|
||||||
|
*/
|
||||||
|
while (*args) {
|
||||||
|
char* opt = NULL;
|
||||||
|
|
||||||
|
if ((opt = shift_option(&args, "--queue_index=")))
|
||||||
|
queue_index = strtoul(opt, NULL, 0);
|
||||||
|
else if ((opt = shift_option(&args, "--card=")))
|
||||||
|
card_index = strtoul(opt, NULL, 0);
|
||||||
|
else if ((opt = shift_option(&args, "--debug")))
|
||||||
|
debug = 1;
|
||||||
|
else if ((opt = shift_option(&args, "--drop")))
|
||||||
|
drop_alerts = 1;
|
||||||
|
else if ((opt = shift_option(&args, "--prefix=")))
|
||||||
|
path_prefix = opt;
|
||||||
|
else {
|
||||||
|
fprintf(stderr, "Unknown option '%s'.\n", args[0]);
|
||||||
|
exit(EXIT_FAILURE);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
run_pcie_logging();
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
@ -0,0 +1,370 @@
|
|||||||
|
/* Copyright (C) 2014 Open Information Security Foundation
|
||||||
|
*
|
||||||
|
* You can copy, redistribute or modify this Program 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
|
||||||
|
* version 2 along with this program; if not, write to the Free Software
|
||||||
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
|
||||||
|
* 02110-1301, USA.
|
||||||
|
*/
|
||||||
|
|
||||||
|
/**
|
||||||
|
* \file
|
||||||
|
*
|
||||||
|
* \author Tom DeCanio <decanio.tom@gmail.com>
|
||||||
|
* \author Ken Steele, Tilera Corporation <suricata@tilera.com>
|
||||||
|
*
|
||||||
|
* File-like output for logging on Tilera PCIe cards (TILEncore-Gx)
|
||||||
|
* add the option to send logs across PCIe and then write the output
|
||||||
|
* files on the host system.
|
||||||
|
*
|
||||||
|
*/
|
||||||
|
#include <sys/types.h>
|
||||||
|
|
||||||
|
#include "suricata-common.h" /* errno.h, string.h, etc. */
|
||||||
|
#include "tm-modules.h" /* LogFileCtx */
|
||||||
|
#include "conf.h" /* ConfNode, etc. */
|
||||||
|
#include "util-atomic.h"
|
||||||
|
#include "util-logopenfile-tile.h"
|
||||||
|
|
||||||
|
#ifdef __tile__
|
||||||
|
#include <gxio/trio.h>
|
||||||
|
#include <mde-version.h>
|
||||||
|
|
||||||
|
#if MDE_VERSION_CODE >= MDE_VERSION(4,1,0)
|
||||||
|
#include <gxpci/gxpci.h>
|
||||||
|
#else
|
||||||
|
#include <gxpci.h>
|
||||||
|
#endif
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Tilera trio (PCIe) configuration.
|
||||||
|
*/
|
||||||
|
static gxio_trio_context_t trio_context_body;
|
||||||
|
static gxio_trio_context_t* trio_context = &trio_context_body;
|
||||||
|
/*
|
||||||
|
* gxpci contexts used for log relay
|
||||||
|
*/
|
||||||
|
static gxpci_context_t gxpci_context_body;
|
||||||
|
static gxpci_context_t *gxpci_context = &gxpci_context_body;
|
||||||
|
/* The TRIO index. */
|
||||||
|
static int trio_index = 0;
|
||||||
|
|
||||||
|
/* The queue index of a packet queue. */
|
||||||
|
static unsigned int queue_index = 0;
|
||||||
|
|
||||||
|
/* The local PCIe MAC index. */
|
||||||
|
static int loc_mac;
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Code for writing files over PCIe to host on Tilera TILEncore PCIe cards.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#define OP_OPEN 1
|
||||||
|
#define OP_WRITE 2
|
||||||
|
#define OP_CLOSE 3
|
||||||
|
|
||||||
|
/** Maximum number of commands in one PCIe function call */
|
||||||
|
#define MAX_CMDS_BATCH 64
|
||||||
|
|
||||||
|
typedef struct {
|
||||||
|
uint32_t magic;
|
||||||
|
uint32_t fileno;
|
||||||
|
uint32_t op;
|
||||||
|
uint32_t seq;
|
||||||
|
uint32_t len;
|
||||||
|
uint32_t next_offset;
|
||||||
|
char buf[];
|
||||||
|
} __attribute__((__packed__)) PcieMsg;
|
||||||
|
|
||||||
|
static int gxpci_fileno = 0;
|
||||||
|
static int pcie_initialized = 0;
|
||||||
|
/* Allocate a Huge page of memory, registered with Trio, into which
|
||||||
|
data to be sent over PCIe is written. Each write starts at wc_pos.
|
||||||
|
*/
|
||||||
|
static char *log_mem = NULL;
|
||||||
|
static uint64_t wr_pos; /* write position within log_mem */
|
||||||
|
|
||||||
|
static SCMutex raw_mutex __attribute__((aligned(64)));
|
||||||
|
static SCMutex pcie_mutex __attribute__((aligned(64)));
|
||||||
|
#define CHECK_SEQ_NUM 1
|
||||||
|
#ifdef CHECK_SEQ_NUM
|
||||||
|
static uint32_t raw_seq = 0;
|
||||||
|
#endif
|
||||||
|
static uint32_t comps_rcvd = 0;
|
||||||
|
/* Block of memory registered with PCIe DMA engine as a source for
|
||||||
|
* PCIe data transfers. Must be <= Huge Page size (16 MB).
|
||||||
|
* Must be large enough that it can't wrap before first PCIe transfer
|
||||||
|
* has completed.
|
||||||
|
*/
|
||||||
|
#define PCIE_MEMORY_BLOCK_SIZE (4 * 1024 * 1024)
|
||||||
|
|
||||||
|
/* Send a buffer over PCIe to Host memory.
|
||||||
|
* len must be smaller than one Packet Queue transfer block.
|
||||||
|
* TODO: Check errors
|
||||||
|
*/
|
||||||
|
static void TilePcieDMABuf(void *buf, uint32_t len)
|
||||||
|
{
|
||||||
|
gxpci_comp_t comp[MAX_CMDS_BATCH];
|
||||||
|
gxpci_cmd_t cmd;
|
||||||
|
int result;
|
||||||
|
int credits;
|
||||||
|
|
||||||
|
SCMutexLock(&pcie_mutex);
|
||||||
|
|
||||||
|
#ifdef CHECK_SEQ_NUM
|
||||||
|
((PcieMsg *)buf)->seq = ++raw_seq;
|
||||||
|
__insn_mf();
|
||||||
|
#endif
|
||||||
|
|
||||||
|
/* Wait for credits to be available for more PCIe writes. */
|
||||||
|
do {
|
||||||
|
result = gxpci_get_comps(gxpci_context, comp, 0, MAX_CMDS_BATCH);
|
||||||
|
if (result) {
|
||||||
|
if (unlikely(result == GXPCI_ERESET)) {
|
||||||
|
SCLogInfo("gxpci channel is reset");
|
||||||
|
return;
|
||||||
|
} else {
|
||||||
|
__sync_fetch_and_add(&comps_rcvd, result);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
credits = gxpci_get_cmd_credits(gxpci_context);
|
||||||
|
if (unlikely(credits == GXPCI_ERESET)) {
|
||||||
|
SCLogInfo("gxpci channel is reset");
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
} while (credits == 0);
|
||||||
|
|
||||||
|
cmd.buffer = buf;
|
||||||
|
/* Round transfer size up to next host cache-line. This will
|
||||||
|
* transfer more data, but is more efficient.
|
||||||
|
*/
|
||||||
|
cmd.size = (len + (CLS - 1)) & ~(CLS - 1);
|
||||||
|
|
||||||
|
__insn_mf();
|
||||||
|
|
||||||
|
/* Loop until the command is sent. */
|
||||||
|
do {
|
||||||
|
/* Send PCIe command to packet queue from tile to host. */
|
||||||
|
result = gxpci_pq_t2h_cmd(gxpci_context, &cmd);
|
||||||
|
if (result == 0)
|
||||||
|
break;
|
||||||
|
if (result == GXPCI_ERESET) {
|
||||||
|
SCLogInfo("gxpci channel is reset");
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
/* Not enough credits to send command? */
|
||||||
|
if (result == GXPCI_ECREDITS)
|
||||||
|
continue;
|
||||||
|
} while (1);
|
||||||
|
|
||||||
|
SCMutexUnlock(&pcie_mutex);
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Allocate a buffer for data that can be sent over PCIe. Reserves
|
||||||
|
* space at the beginning for the Pcie msg. The buffer is allocated
|
||||||
|
* from a 4MB pool on one huge page. The allocation simply walks
|
||||||
|
* throught the buffer sequentially. This removes the need to free
|
||||||
|
* the buffers, as they simply age out.
|
||||||
|
*/
|
||||||
|
static PcieMsg *TilePcieAllocateBuffer(size_t size)
|
||||||
|
{
|
||||||
|
size += sizeof(PcieMsg);
|
||||||
|
/* Round up to cache-line size */
|
||||||
|
size = (size + (CLS - 1)) & ~(CLS - 1);
|
||||||
|
|
||||||
|
PcieMsg *pmsg;
|
||||||
|
SCMutexLock(&raw_mutex);
|
||||||
|
pmsg = (PcieMsg *)&log_mem[wr_pos];
|
||||||
|
wr_pos += size;
|
||||||
|
if (wr_pos > PCIE_MEMORY_BLOCK_SIZE) {
|
||||||
|
/* Don't have enough space at the end of the memory block, so
|
||||||
|
* wrap to the start.
|
||||||
|
*/
|
||||||
|
pmsg = (PcieMsg *)&log_mem[0];
|
||||||
|
wr_pos = size;
|
||||||
|
|
||||||
|
}
|
||||||
|
SCMutexUnlock(&raw_mutex);
|
||||||
|
|
||||||
|
return pmsg;
|
||||||
|
}
|
||||||
|
|
||||||
|
static void PcieWriteOpen(PcieFile *fp, const char *path, const char append)
|
||||||
|
{
|
||||||
|
/* Need space for file name, file mode character and string termination */
|
||||||
|
const int buffer_size = strlen(path) + 2;
|
||||||
|
|
||||||
|
/* Allocate space in the PCIe output buffer */
|
||||||
|
PcieMsg *p = TilePcieAllocateBuffer(buffer_size);
|
||||||
|
|
||||||
|
p->magic = 5555;
|
||||||
|
p->fileno = fp->fileno;
|
||||||
|
p->op = OP_OPEN;
|
||||||
|
p->len = offsetof(PcieMsg, buf);
|
||||||
|
/* Format is one character Mode, followed by file path. */
|
||||||
|
p->len += snprintf(p->buf, buffer_size, "%c%s", append, path);
|
||||||
|
|
||||||
|
TilePcieDMABuf(p, p->len);
|
||||||
|
}
|
||||||
|
|
||||||
|
static int TilePcieWrite(const char *buffer, int buffer_len, LogFileCtx *log_ctx)
|
||||||
|
{
|
||||||
|
PcieFile *fp = log_ctx->pcie_fp;
|
||||||
|
/* Allocate space in the PCIe output buffer */
|
||||||
|
PcieMsg *p = TilePcieAllocateBuffer(buffer_len);
|
||||||
|
|
||||||
|
p->magic = 5555;
|
||||||
|
p->fileno = fp->fileno;
|
||||||
|
p->op = OP_WRITE;
|
||||||
|
p->len = offsetof(PcieMsg, buf);
|
||||||
|
p->len += buffer_len;
|
||||||
|
p->next_offset = 0;
|
||||||
|
|
||||||
|
/* Can remove the need for this memcpy later. */
|
||||||
|
memcpy(p->buf, buffer, buffer_len);
|
||||||
|
|
||||||
|
TilePcieDMABuf(p, p->len);
|
||||||
|
|
||||||
|
return buffer_len;
|
||||||
|
}
|
||||||
|
|
||||||
|
static PcieFile *TileOpenPcieFpInternal(const char *path, const char append_char)
|
||||||
|
{
|
||||||
|
int result;
|
||||||
|
PcieFile *fp;
|
||||||
|
|
||||||
|
/* Only initialize once */
|
||||||
|
if (SCAtomicCompareAndSwap(&pcie_initialized, 0, 1)) {
|
||||||
|
SCMutexInit(&raw_mutex, NULL);
|
||||||
|
SCMutexInit(&pcie_mutex, NULL);
|
||||||
|
|
||||||
|
SCLogInfo("Initializing Tile-Gx PCIe index %d / %d, queue: %d",
|
||||||
|
trio_index, loc_mac, queue_index);
|
||||||
|
|
||||||
|
result = gxio_trio_init(trio_context, trio_index);
|
||||||
|
if (result < 0) {
|
||||||
|
pcie_initialized = 0;
|
||||||
|
SCLogError(SC_ERR_PCIE_INIT_FAILED,
|
||||||
|
"gxio_trio_init() failed: %d: %s",
|
||||||
|
result, gxio_strerror(result));
|
||||||
|
return NULL;
|
||||||
|
}
|
||||||
|
|
||||||
|
result = gxpci_init(trio_context, gxpci_context, trio_index, loc_mac);
|
||||||
|
if (result < 0) {
|
||||||
|
pcie_initialized = 0;
|
||||||
|
SCLogError(SC_ERR_PCIE_INIT_FAILED,
|
||||||
|
"gxpci_init() failed: %d: %s",
|
||||||
|
result, gxpci_strerror(result));
|
||||||
|
return NULL;
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* This indicates that we need to allocate an ASID ourselves,
|
||||||
|
* instead of using one that is allocated somewhere else.
|
||||||
|
*/
|
||||||
|
int asid = GXIO_ASID_NULL;
|
||||||
|
|
||||||
|
result = gxpci_open_queue(gxpci_context, asid, GXPCI_PQ_T2H, 0,
|
||||||
|
queue_index, 0, 0);
|
||||||
|
if (result < 0) {
|
||||||
|
pcie_initialized = 0;
|
||||||
|
SCLogError(SC_ERR_PCIE_INIT_FAILED,
|
||||||
|
"gxpci_open_queue() failed: %d: %s",
|
||||||
|
result, gxpci_strerror(result));
|
||||||
|
return NULL;
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Allocate and register data buffer
|
||||||
|
*/
|
||||||
|
size_t hugepagesz = tmc_alloc_get_huge_pagesize();
|
||||||
|
tmc_alloc_t alloc = TMC_ALLOC_INIT;
|
||||||
|
tmc_alloc_set_huge(&alloc);
|
||||||
|
tmc_alloc_set_home(&alloc, TMC_ALLOC_HOME_HASH);
|
||||||
|
tmc_alloc_set_pagesize_exact(&alloc, hugepagesz);
|
||||||
|
log_mem = tmc_alloc_map(&alloc, hugepagesz);
|
||||||
|
BUG_ON(PCIE_MEMORY_BLOCK_SIZE > hugepagesz);
|
||||||
|
|
||||||
|
result = gxpci_iomem_register(gxpci_context, log_mem, hugepagesz);
|
||||||
|
if (result < 0) {
|
||||||
|
pcie_initialized = 0;
|
||||||
|
SCLogError(SC_ERR_PCIE_INIT_FAILED,
|
||||||
|
"gxpci_iomem_register() failed: %d: %s",
|
||||||
|
result, gxpci_strerror(result));
|
||||||
|
return NULL;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
fp = SCMalloc(sizeof(PcieFile));
|
||||||
|
if (fp == NULL) {
|
||||||
|
SCLogError(SC_ERR_PCIE_INIT_FAILED,
|
||||||
|
"Failed to Allocate memory for PCIe file pointer");
|
||||||
|
|
||||||
|
return NULL;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Sequentially allocate File descriptor numbers. Not currently ever freed */
|
||||||
|
fp->fileno = SCAtomicFetchAndAdd(&gxpci_fileno, 1);
|
||||||
|
PcieWriteOpen(fp, path, append_char);
|
||||||
|
|
||||||
|
return fp;
|
||||||
|
}
|
||||||
|
|
||||||
|
/** \brief Close a PCIe file
|
||||||
|
* \param PCIe file desriptor
|
||||||
|
*/
|
||||||
|
static void TileClosePcieFp(LogFileCtx *log_ctx)
|
||||||
|
{
|
||||||
|
SCLogInfo("Closing Tile-Gx PCIe: %s", log_ctx->filename);
|
||||||
|
|
||||||
|
/* TODO: Need to count open files and close when reaches zero. */
|
||||||
|
SCMutexLock(&pcie_mutex);
|
||||||
|
|
||||||
|
if (gxpci_context) {
|
||||||
|
gxpci_destroy(gxpci_context);
|
||||||
|
gxpci_context = NULL;
|
||||||
|
}
|
||||||
|
|
||||||
|
SCMutexUnlock(&pcie_mutex);
|
||||||
|
|
||||||
|
free(log_ctx->pcie_fp);
|
||||||
|
}
|
||||||
|
|
||||||
|
/** \brief open the indicated file remotely over PCIe to a host
|
||||||
|
* \param path filesystem path to open
|
||||||
|
* \param append_setting open file with O_APPEND: "yes" or "no"
|
||||||
|
* \retval FILE* on success
|
||||||
|
* \retval NULL on error
|
||||||
|
*/
|
||||||
|
PcieFile *TileOpenPcieFp(LogFileCtx *log_ctx, const char *path,
|
||||||
|
const char *append_setting)
|
||||||
|
{
|
||||||
|
PcieFile *ret = NULL;
|
||||||
|
if (strcasecmp(append_setting, "yes") == 0) {
|
||||||
|
ret = TileOpenPcieFpInternal(path, 'a');
|
||||||
|
} else {
|
||||||
|
ret = TileOpenPcieFpInternal(path, 'w');
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Override the default Write and Close functions
|
||||||
|
* with PCIe Write and Close functions.
|
||||||
|
*/
|
||||||
|
log_ctx->Write = TilePcieWrite;
|
||||||
|
log_ctx->Close = TileClosePcieFp;
|
||||||
|
|
||||||
|
if (ret == NULL)
|
||||||
|
SCLogError(SC_ERR_FOPEN, "Error opening PCIe file: \"%s\": %s",
|
||||||
|
path, strerror(errno));
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
#endif /* __tilegx__ */
|
||||||
@ -0,0 +1,32 @@
|
|||||||
|
/* Copyright (C) 2014 Open Information Security Foundation
|
||||||
|
*
|
||||||
|
* You can copy, redistribute or modify this Program 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
|
||||||
|
* version 2 along with this program; if not, write to the Free Software
|
||||||
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
|
||||||
|
* 02110-1301, USA.
|
||||||
|
*/
|
||||||
|
|
||||||
|
/**
|
||||||
|
* \file
|
||||||
|
*
|
||||||
|
* \author Ken Steele, Tilera Corporation <suricata@tilera.com>
|
||||||
|
*/
|
||||||
|
|
||||||
|
#ifndef __UTIL_LOGOPENFILE_TILE_H__
|
||||||
|
#define __UTIL_LOGOPENFILE_TILE_H__
|
||||||
|
|
||||||
|
#include "util-logopenfile.h" /* LogFileCtx */
|
||||||
|
|
||||||
|
PcieFile *TileOpenPcieFp(LogFileCtx *log_ctx, const char *path,
|
||||||
|
const char *append_setting);
|
||||||
|
|
||||||
|
#endif /* __UTIL_LOGOPENFILE_TILE_H__ */
|
||||||
Loading…
Reference in New Issue