/**
* Initialize segment in a private heap
*/
int
ssvm_master_init_private (ssvm_private_t * ssvm)
{
ssvm_shared_header_t *sh;
u32 pagesize = clib_mem_get_page_size ();
u32 rnd_size = 0;
u8 *heap;
rnd_size = clib_max (ssvm->ssvm_size + (pagesize - 1), ssvm->ssvm_size);
rnd_size &= ~(pagesize - 1);
#if USE_DLMALLOC == 0
{
mheap_t *heap_header;
heap = mheap_alloc (0, rnd_size);
if (heap == 0)
{
clib_unix_warning ("mheap alloc");
return -1;
}
heap_header = mheap_header (heap);
heap_header->flags |= MHEAP_FLAG_THREAD_SAFE;
}
#else
heap = create_mspace (rnd_size, 1 /* locked */ );
#endif
ssvm->ssvm_size = rnd_size;
ssvm->i_am_master = 1;
ssvm->my_pid = getpid ();
ssvm->requested_va = ~0;
/* Allocate a [sic] shared memory header, in process memory... */
sh = clib_mem_alloc_aligned (sizeof (*sh), CLIB_CACHE_LINE_BYTES);
ssvm->sh = sh;
clib_memset (sh, 0, sizeof (*sh));
sh->heap = heap;
sh->ssvm_va = pointer_to_uword (heap);
sh->type = SSVM_SEGMENT_PRIVATE;
return 0;
}
clib_error_t * pcap_read (pcap_main_t * pm)
{
clib_error_t * error = 0;
int fd, need_swap, n;
pcap_file_header_t fh;
pcap_packet_header_t ph;
fd = open (pm->file_name, O_RDONLY);
if (fd < 0)
{
error = clib_error_return_unix (0, "open `%s'", pm->file_name);
goto done;
}
if (read (fd, &fh, sizeof (fh)) != sizeof (fh))
{
error = clib_error_return_unix (0, "read file header `%s'", pm->file_name);
goto done;
}
need_swap = 0;
if (fh.magic == 0xd4c3b2a1)
{
need_swap = 1;
#define _(t,f) fh.f = clib_byte_swap_##t (fh.f);
foreach_pcap_file_header;
#undef _
}
if (fh.magic != 0xa1b2c3d4)
{
error = clib_error_return (0, "bad magic `%s'", pm->file_name);
goto done;
}
pm->min_packet_bytes = 0;
pm->max_packet_bytes = 0;
while ((n = read (fd, &ph, sizeof (ph))) != 0)
{
u8 * data;
if (need_swap)
{
#define _(t,f) ph.f = clib_byte_swap_##t (ph.f);
foreach_pcap_packet_header;
#undef _
}
data = vec_new (u8, ph.n_bytes_in_packet);
if (read (fd, data, ph.n_packet_bytes_stored_in_file) != ph.n_packet_bytes_stored_in_file)
{
error = clib_error_return (0, "short read `%s'", pm->file_name);
goto done;
}
if (vec_len (pm->packets_read) == 0)
pm->min_packet_bytes = pm->max_packet_bytes = ph.n_bytes_in_packet;
else
{
pm->min_packet_bytes = clib_min (pm->min_packet_bytes, ph.n_bytes_in_packet);
pm->max_packet_bytes = clib_max (pm->max_packet_bytes, ph.n_bytes_in_packet);
}
vec_add1 (pm->packets_read, data);
}
done:
if (fd >= 0)
close (fd);
return error;
}
