106 lines
2.6 KiB
C
106 lines
2.6 KiB
C
/*
|
|
PF_RING compatibility layer
|
|
|
|
In order to avoid special build hassle, this code links to PF_RING at
|
|
runtime instead compile-time. That means you can compile this code
|
|
BEFORE installing and building PF_RING.
|
|
|
|
*/
|
|
#include "stub-pfring.h"
|
|
#include "util-safefunc.h"
|
|
#include "util-logger.h"
|
|
|
|
struct PFRING PFRING;
|
|
|
|
#if defined(__linux__)
|
|
#include <dlfcn.h>
|
|
#endif
|
|
|
|
/***************************************************************************
|
|
* This checks whether the "pf_ring" driver is installed.
|
|
***************************************************************************/
|
|
int
|
|
PFRING_is_installed(void);
|
|
|
|
int
|
|
PFRING_is_installed(void)
|
|
{
|
|
#if defined(__linux__)
|
|
FILE *fp;
|
|
char line[256];
|
|
int found = 0;
|
|
|
|
fp = fopen("/proc/modules", "rb");
|
|
if (fp == NULL)
|
|
return 0;
|
|
|
|
while (fgets(line, sizeof(line), fp)) {
|
|
if (memcmp(line, "pf_ring ", 8) == 0) {
|
|
found = 1;
|
|
LOG(2, "pfring: found 'pf_ring' driver\n");
|
|
}
|
|
if (memcmp(line, "ixgbe ", 6) == 0) {
|
|
LOG(2, "pfring: found 'ixgbe' driver\n");
|
|
}
|
|
if (memcmp(line, "e1000e ", 8) == 0) {
|
|
LOG(2, "pfring: found 'e1000e' driver\n");
|
|
}
|
|
}
|
|
fclose(fp);
|
|
return found;
|
|
#else
|
|
return 0;
|
|
#endif
|
|
}
|
|
|
|
|
|
/***************************************************************************
|
|
***************************************************************************/
|
|
int
|
|
PFRING_init(void)
|
|
{
|
|
#if defined(__linux__)
|
|
void *h;
|
|
int err = 0;
|
|
LOG(6, "pfring: initializing subsystem\n");
|
|
LOG(6, "pfring: looking for 'libpfring.so'\n");
|
|
h = dlopen("libpfring.so", RTLD_LAZY);
|
|
if (h == NULL) {
|
|
LOG(2, "pfring: error: dlopen('libpfring.so'): %s\n", strerror(errno));
|
|
return 0;
|
|
} else
|
|
LOG(2, "pfring: found 'libpfring.so'!\n");
|
|
|
|
#define LOADSYM(name) if ((PFRING.name = dlsym(h, "pfring_"#name)) == 0) {LOG(2, "pfring_%s: not found in 'libpfring.so': %s\n", #name, strerror(errno));err=1;}
|
|
LOADSYM(open);
|
|
LOADSYM(close);
|
|
LOADSYM(enable_ring);
|
|
LOADSYM(send);
|
|
LOADSYM(recv);
|
|
LOADSYM(poll);
|
|
LOADSYM(version);
|
|
LOADSYM(set_direction);
|
|
LOADSYM(set_application_name);
|
|
//LOADSYM(get_bound_device);
|
|
|
|
if (err) {
|
|
memset(&PFRING, 0, sizeof(PFRING));
|
|
LOG(2, "pfring: failed to load\n");
|
|
} else {
|
|
LOG(2, "pfring: successfully loaded PF_RING API\n");
|
|
|
|
if (!PFRING_is_installed()) {
|
|
LOG(0, "pfring: ERROR: 'pf_ring' driver module not found!!!!!\n");
|
|
} else
|
|
LOG(2, "pfring: found 'pf_ring' driver module\n");
|
|
}
|
|
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
|
|
|
|
|
|
|