* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
+/**
+ * @cond (!DPDK)
+ * @file
+ *
+ * Allocate/free network buffers.
+ */
+
+#if DPDK > 0
+#include <rte_config.h>
+
+#include <rte_common.h>
+#include <rte_log.h>
+#include <rte_memory.h>
+#include <rte_memzone.h>
+#include <rte_tailq.h>
+#include <rte_eal.h>
+#include <rte_per_lcore.h>
+#include <rte_launch.h>
+#include <rte_atomic.h>
+#include <rte_cycles.h>
+#include <rte_prefetch.h>
+#include <rte_lcore.h>
+#include <rte_per_lcore.h>
+#include <rte_branch_prediction.h>
+#include <rte_interrupts.h>
+#include <rte_pci.h>
+#include <rte_random.h>
+#include <rte_debug.h>
+#include <rte_ether.h>
+#include <rte_ethdev.h>
+#include <rte_ring.h>
+#include <rte_mempool.h>
+#include <rte_mbuf.h>
+#include <rte_version.h>
+#endif
+
#include <vlib/vlib.h>
+#if DPDK > 0
+#pragma weak rte_mem_virt2phy
+#pragma weak rte_eal_has_hugepages
+#pragma weak rte_socket_id
+#pragma weak rte_pktmbuf_pool_create
+#endif
+
uword
vlib_buffer_length_in_chain_slow_path (vlib_main_t * vm,
vlib_buffer_t * b_first)
format_vlib_buffer (u8 * s, va_list * args)
{
vlib_buffer_t *b = va_arg (*args, vlib_buffer_t *);
+#if DPDK > 0
+ uword indent = format_get_indent (s);
+
+ s = format (s, "current data %d, length %d, free-list %d",
+ b->current_data, b->current_length, b->free_list_index);
+
+ if (b->flags & VLIB_BUFFER_TOTAL_LENGTH_VALID)
+ s = format (s, ", totlen-nifb %d",
+ b->total_length_not_including_first_buffer);
+
+ if (b->flags & VLIB_BUFFER_IS_TRACED)
+ s = format (s, ", trace 0x%x", b->trace_index);
+
+ while (b->flags & VLIB_BUFFER_NEXT_PRESENT)
+ {
+ vlib_main_t *vm = vlib_get_main ();
+ u32 next_buffer = b->next_buffer;
+ b = vlib_get_buffer (vm, next_buffer);
+
+ s = format (s, "\n%Unext-buffer 0x%x, segment length %d",
+ format_white_space, indent, next_buffer, b->current_length);
+ }
+
+#else
s = format (s, "current data %d, length %d, free-list %d",
b->current_data, b->current_length, b->free_list_index);
if (b->flags & VLIB_BUFFER_NEXT_PRESENT)
s = format (s, ", next-buffer 0x%x", b->next_buffer);
+#endif
return s;
}
return s;
}
+#if DPDK == 0
static u8 *
format_vlib_buffer_known_state (u8 * s, va_list * args)
{
return format (s, "%s", t);
}
+#endif
u8 *
format_vlib_buffer_contents (u8 * s, va_list * va)
return s;
}
+#if DPDK == 0
static u8 *
vlib_validate_buffer_helper (vlib_main_t * vm,
u32 bi,
hash_free (hash);
return result;
}
+#endif
vlib_main_t **vlib_mains;
+#if DPDK == 0
/* When dubugging validate that given buffers are either known allocated
or known free. */
static void
}
}
+#endif
/* Aligned copy routine. */
void
vlib_aligned_memcpy (void *_dst, void *_src, int n_bytes)
{
vlib_buffer_main_t *bm = vm->buffer_main;
vlib_buffer_free_list_t *f;
+#if DPDK > 0
+ int i;
+
+ ASSERT (os_get_cpu_number () == 0);
+
+ if (!is_default && pool_elts (bm->buffer_free_list_pool) == 0)
+ {
+ u32 default_free_free_list_index;
+
+ /* *INDENT-OFF* */
+ default_free_free_list_index =
+ vlib_buffer_create_free_list_helper
+ (vm,
+ /* default buffer size */ VLIB_BUFFER_DEFAULT_FREE_LIST_BYTES,
+ /* is_public */ 1,
+ /* is_default */ 1,
+ (u8 *) "default");
+ /* *INDENT-ON* */
+ ASSERT (default_free_free_list_index ==
+ VLIB_BUFFER_DEFAULT_FREE_LIST_INDEX);
+
+ if (n_data_bytes == VLIB_BUFFER_DEFAULT_FREE_LIST_BYTES && is_public)
+ return default_free_free_list_index;
+ }
+
+ pool_get_aligned (bm->buffer_free_list_pool, f, CLIB_CACHE_LINE_BYTES);
+
+ memset (f, 0, sizeof (f[0]));
+ f->index = f - bm->buffer_free_list_pool;
+ f->n_data_bytes = vlib_buffer_round_size (n_data_bytes);
+ f->min_n_buffers_each_physmem_alloc = 16;
+ f->name = clib_mem_is_heap_object (name) ? name : format (0, "%s", name);
+
+ /* Setup free buffer template. */
+ f->buffer_init_template.free_list_index = f->index;
+
+ if (is_public)
+ {
+ uword *p = hash_get (bm->free_list_by_size, f->n_data_bytes);
+ if (!p)
+ hash_set (bm->free_list_by_size, f->n_data_bytes, f->index);
+ }
+
+ for (i = 1; i < vec_len (vlib_mains); i++)
+ {
+ vlib_buffer_main_t *wbm = vlib_mains[i]->buffer_main;
+ vlib_buffer_free_list_t *wf;
+ pool_get_aligned (wbm->buffer_free_list_pool,
+ wf, CLIB_CACHE_LINE_BYTES);
+ ASSERT (f - bm->buffer_free_list_pool ==
+ wf - wbm->buffer_free_list_pool);
+ wf[0] = f[0];
+ wf->aligned_buffers = 0;
+ wf->unaligned_buffers = 0;
+ wf->n_alloc = 0;
+ }
+#else
if (!is_default && pool_elts (bm->buffer_free_list_pool) == 0)
{
if (!p)
hash_set (bm->free_list_by_size, f->n_data_bytes, f->index);
}
+#endif
return f->index;
}
del_free_list (vlib_main_t * vm, vlib_buffer_free_list_t * f)
{
u32 i;
+#if DPDK > 0
+ struct rte_mbuf *mb;
+ vlib_buffer_t *b;
+
+ for (i = 0; i < vec_len (f->unaligned_buffers); i++)
+ {
+ b = vlib_get_buffer (vm, f->unaligned_buffers[i]);
+ mb = rte_mbuf_from_vlib_buffer (b);
+ ASSERT (rte_mbuf_refcnt_read (mb) == 1);
+ rte_pktmbuf_free (mb);
+ }
+ for (i = 0; i < vec_len (f->aligned_buffers); i++)
+ {
+ b = vlib_get_buffer (vm, f->aligned_buffers[i]);
+ mb = rte_mbuf_from_vlib_buffer (b);
+ ASSERT (rte_mbuf_refcnt_read (mb) == 1);
+ rte_pktmbuf_free (mb);
+ }
+ vec_free (f->name);
+#else
for (i = 0; i < vec_len (f->buffer_memory_allocated); i++)
vm->os_physmem_free (f->buffer_memory_allocated[i]);
vec_free (f->name);
vec_free (f->buffer_memory_allocated);
+#endif
vec_free (f->unaligned_buffers);
vec_free (f->aligned_buffers);
}
vlib_buffer_main_t *bm = vm->buffer_main;
vlib_buffer_free_list_t *f;
u32 merge_index;
+#if DPDK > 0
+ int i;
+
+ ASSERT (os_get_cpu_number () == 0);
+
+ f = vlib_buffer_get_free_list (vm, free_list_index);
+
+ merge_index = vlib_buffer_get_free_list_with_size (vm, f->n_data_bytes);
+ if (merge_index != ~0 && merge_index != free_list_index)
+ {
+ merge_free_lists (pool_elt_at_index (bm->buffer_free_list_pool,
+ merge_index), f);
+ }
+
+ del_free_list (vm, f);
+
+ /* Poison it. */
+ memset (f, 0xab, sizeof (f[0]));
+
+ pool_put (bm->buffer_free_list_pool, f);
+
+ for (i = 1; i < vec_len (vlib_mains); i++)
+ {
+ bm = vlib_mains[i]->buffer_main;
+ f = vlib_buffer_get_free_list (vlib_mains[i], free_list_index);;
+ memset (f, 0xab, sizeof (f[0]));
+ pool_put (bm->buffer_free_list_pool, f);
+ }
+#else
f = vlib_buffer_get_free_list (vm, free_list_index);
memset (f, 0xab, sizeof (f[0]));
pool_put (bm->buffer_free_list_pool, f);
+#endif
}
/* Make sure free list has at least given number of free buffers. */
fill_free_list (vlib_main_t * vm,
vlib_buffer_free_list_t * fl, uword min_free_buffers)
{
+#if DPDK > 0
+ vlib_buffer_t *b;
+ int n, i;
+ u32 bi;
+ u32 n_remaining = 0, n_alloc = 0;
+ unsigned socket_id = rte_socket_id ? rte_socket_id () : 0;
+ struct rte_mempool *rmp = vm->buffer_main->pktmbuf_pools[socket_id];
+ struct rte_mbuf *mb;
+
+ /* Too early? */
+ if (PREDICT_FALSE (rmp == 0))
+ return 0;
+
+ trim_aligned (fl);
+
+ /* Already have enough free buffers on free list? */
+ n = min_free_buffers - vec_len (fl->aligned_buffers);
+ if (n <= 0)
+ return min_free_buffers;
+
+ /* Always allocate round number of buffers. */
+ n = round_pow2 (n, BUFFERS_PER_COPY);
+
+ /* Always allocate new buffers in reasonably large sized chunks. */
+ n = clib_max (n, fl->min_n_buffers_each_physmem_alloc);
+
+ vec_validate (vm->mbuf_alloc_list, n - 1);
+
+ if (rte_mempool_get_bulk (rmp, vm->mbuf_alloc_list, n) < 0)
+ return 0;
+
+ _vec_len (vm->mbuf_alloc_list) = n;
+
+ for (i = 0; i < n; i++)
+ {
+ mb = vm->mbuf_alloc_list[i];
+
+ ASSERT (rte_mbuf_refcnt_read (mb) == 0);
+ rte_mbuf_refcnt_set (mb, 1);
+
+ b = vlib_buffer_from_rte_mbuf (mb);
+ bi = vlib_get_buffer_index (vm, b);
+
+ vec_add1_aligned (fl->aligned_buffers, bi, sizeof (vlib_copy_unit_t));
+ n_alloc++;
+ n_remaining--;
+
+ vlib_buffer_init_for_free_list (b, fl);
+
+ if (fl->buffer_init_function)
+ fl->buffer_init_function (vm, fl, &bi, 1);
+ }
+
+ fl->n_alloc += n;
+
+ return n;
+#else
vlib_buffer_t *buffers, *b;
int n, n_bytes, i;
u32 *bi;
fl->buffer_init_function (vm, fl, bi, n_this_chunk);
}
return n_alloc;
+#endif
}
always_inline uword
uword u_len, n_left;
uword n_unaligned_start, n_unaligned_end, n_filled;
+#if DPDK == 0
ASSERT (os_get_cpu_number () == 0);
+#endif
n_left = n_alloc_buffers;
dst = alloc_buffers;
n_unaligned_start = ((BUFFERS_PER_COPY - copy_alignment (dst))
else
_vec_len (free_list->unaligned_buffers) = u_len;
+#if DPDK == 0
/* Verify that buffers are known free. */
vlib_buffer_validate_alloc_free (vm, alloc_buffers,
n_alloc_buffers, VLIB_BUFFER_KNOWN_FREE);
+#endif
return n_alloc_buffers;
}
vlib_buffer_alloc (vlib_main_t * vm, u32 * buffers, u32 n_buffers)
{
vlib_buffer_main_t *bm = vm->buffer_main;
+#if DPDK == 0
ASSERT (os_get_cpu_number () == 0);
+#endif
return alloc_from_free_list
(vm,
return rv;
}
+#if DPDK == 0
void vnet_buffer_free_dpdk_mb (vlib_buffer_t * b) __attribute__ ((weak));
void
vnet_buffer_free_dpdk_mb (vlib_buffer_t * b)
{
}
+#endif
static_always_inline void
vlib_buffer_free_inline (vlib_main_t * vm,
u32 * buffers, u32 n_buffers, u32 follow_buffer_next)
{
+#if DPDK > 0
+ vlib_buffer_main_t *bm = vm->buffer_main;
+ vlib_buffer_free_list_t *fl;
+ u32 fi;
+ int i;
+ u32 (*cb) (vlib_main_t * vm, u32 * buffers, u32 n_buffers,
+ u32 follow_buffer_next);
+
+ cb = bm->buffer_free_callback;
+
+ if (PREDICT_FALSE (cb != 0))
+ n_buffers = (*cb) (vm, buffers, n_buffers, follow_buffer_next);
+
+ if (!n_buffers)
+ return;
+
+ for (i = 0; i < n_buffers; i++)
+ {
+ vlib_buffer_t *b;
+ struct rte_mbuf *mb;
+
+ b = vlib_get_buffer (vm, buffers[i]);
+
+ fl = buffer_get_free_list (vm, b, &fi);
+
+ /* The only current use of this callback: multicast recycle */
+ if (PREDICT_FALSE (fl->buffers_added_to_freelist_function != 0))
+ {
+ int j;
+
+ add_buffer_to_free_list
+ (vm, fl, buffers[i], (b->flags & VLIB_BUFFER_RECYCLE) == 0);
+
+ for (j = 0; j < vec_len (bm->announce_list); j++)
+ {
+ if (fl == bm->announce_list[j])
+ goto already_announced;
+ }
+ vec_add1 (bm->announce_list, fl);
+ already_announced:
+ ;
+ }
+ else
+ {
+ if (PREDICT_TRUE ((b->flags & VLIB_BUFFER_RECYCLE) == 0))
+ {
+ mb = rte_mbuf_from_vlib_buffer (b);
+ ASSERT (rte_mbuf_refcnt_read (mb) == 1);
+ rte_pktmbuf_free (mb);
+ }
+ }
+ }
+ if (vec_len (bm->announce_list))
+ {
+ vlib_buffer_free_list_t *fl;
+ for (i = 0; i < vec_len (bm->announce_list); i++)
+ {
+ fl = bm->announce_list[i];
+ fl->buffers_added_to_freelist_function (vm, fl);
+ }
+ _vec_len (bm->announce_list) = 0;
+ }
+#else
vlib_buffer_main_t *bm = vm->buffer_main;
vlib_buffer_free_list_t *fl;
static u32 *next_to_free[2]; /* smp bad */
}
_vec_len (announce_list) = 0;
}
+#endif
}
void
0);
}
+#if DPDK == 0
/* Copy template packet data into buffers as they are allocated. */
static void
vlib_packet_template_buffer_init (vlib_main_t * vm,
b->current_length);
}
}
+#endif
void
vlib_packet_template_init (vlib_main_t * vm,
uword min_n_buffers_each_physmem_alloc,
char *fmt, ...)
{
+#if DPDK > 0
+ va_list va;
+ __attribute__ ((unused)) u8 *name;
+
+ va_start (va, fmt);
+ name = va_format (0, fmt, &va);
+ va_end (va);
+
+ vlib_worker_thread_barrier_sync (vm);
+ memset (t, 0, sizeof (t[0]));
+
+ vec_add (t->packet_data, packet_data, n_packet_data_bytes);
+
+ vlib_worker_thread_barrier_release (vm);
+#else
vlib_buffer_free_list_t *fl;
va_list va;
u8 *name;
fl->buffer_init_template.current_data = 0;
fl->buffer_init_template.current_length = n_packet_data_bytes;
fl->buffer_init_template.flags = 0;
+#endif
}
void *
return b->data;
}
+#if DPDK == 0
void
vlib_packet_template_get_packet_helper (vlib_main_t * vm,
vlib_packet_template_t * t)
_vec_len (t->free_buffers) = n_alloc;
}
+#endif
/* Append given data to end of buffer, possibly allocating new buffers. */
u32
vlib_buffer_add_data (vlib_main_t * vm,
return copied;
}
-/*
- * Fills in the required rte_mbuf fields for chained buffers given a VLIB chain.
- */
-void
-vlib_buffer_chain_validate (vlib_main_t * vm, vlib_buffer_t * b_first)
+#if DPDK > 0
+clib_error_t *
+vlib_buffer_pool_create (vlib_main_t * vm, unsigned num_mbufs,
+ unsigned socket_id)
{
- return;
+ vlib_buffer_main_t *bm = vm->buffer_main;
+ vlib_physmem_main_t *vpm = &vm->physmem_main;
+ struct rte_mempool *rmp;
+ int i;
+
+ if (!rte_pktmbuf_pool_create)
+ return clib_error_return (0, "not linked with DPDK");
+
+ vec_validate_aligned (bm->pktmbuf_pools, socket_id, CLIB_CACHE_LINE_BYTES);
+
+ /* pool already exists, nothing to do */
+ if (bm->pktmbuf_pools[socket_id])
+ return 0;
+
+ u8 *pool_name = format (0, "mbuf_pool_socket%u%c", socket_id, 0);
+
+ rmp = rte_pktmbuf_pool_create ((char *) pool_name, /* pool name */
+ num_mbufs, /* number of mbufs */
+ 512, /* cache size */
+ VLIB_BUFFER_HDR_SIZE, /* priv size */
+ VLIB_BUFFER_PRE_DATA_SIZE + VLIB_BUFFER_DATA_SIZE, /* dataroom size */
+ socket_id); /* cpu socket */
+
+ if (rmp)
+ {
+ {
+ uword this_pool_end;
+ uword this_pool_start;
+ uword this_pool_size;
+ uword save_vpm_start, save_vpm_end, save_vpm_size;
+ struct rte_mempool_memhdr *memhdr;
+
+ this_pool_start = ~0ULL;
+ this_pool_end = 0LL;
+
+ STAILQ_FOREACH (memhdr, &rmp->mem_list, next)
+ {
+ if (((uword) (memhdr->addr + memhdr->len)) > this_pool_end)
+ this_pool_end = (uword) (memhdr->addr + memhdr->len);
+ if (((uword) memhdr->addr) < this_pool_start)
+ this_pool_start = (uword) (memhdr->addr);
+ }
+ ASSERT (this_pool_start < ~0ULL && this_pool_end > 0);
+ this_pool_size = this_pool_end - this_pool_start;
+
+ if (CLIB_DEBUG > 1)
+ {
+ clib_warning ("%s: pool start %llx pool end %llx pool size %lld",
+ pool_name, this_pool_start, this_pool_end,
+ this_pool_size);
+ clib_warning
+ ("before: virtual.start %llx virtual.end %llx virtual.size %lld",
+ vpm->virtual.start, vpm->virtual.end, vpm->virtual.size);
+ }
+
+ save_vpm_start = vpm->virtual.start;
+ save_vpm_end = vpm->virtual.end;
+ save_vpm_size = vpm->virtual.size;
+
+ if ((this_pool_start < vpm->virtual.start) || vpm->virtual.start == 0)
+ vpm->virtual.start = this_pool_start;
+ if (this_pool_end > vpm->virtual.end)
+ vpm->virtual.end = this_pool_end;
+
+ vpm->virtual.size = vpm->virtual.end - vpm->virtual.start;
+
+ if (CLIB_DEBUG > 1)
+ {
+ clib_warning
+ ("after: virtual.start %llx virtual.end %llx virtual.size %lld",
+ vpm->virtual.start, vpm->virtual.end, vpm->virtual.size);
+ }
+
+ /* check if fits into buffer index range */
+ if ((u64) vpm->virtual.size >
+ ((u64) 1 << (32 + CLIB_LOG2_CACHE_LINE_BYTES)))
+ {
+ clib_warning ("physmem: virtual size out of range!");
+ vpm->virtual.start = save_vpm_start;
+ vpm->virtual.end = save_vpm_end;
+ vpm->virtual.size = save_vpm_size;
+ rmp = 0;
+ }
+ }
+ if (rmp)
+ {
+ bm->pktmbuf_pools[socket_id] = rmp;
+ vec_free (pool_name);
+ return 0;
+ }
+ }
+
+ vec_free (pool_name);
+
+ /* no usable pool for this socket, try to use pool from another one */
+ for (i = 0; i < vec_len (bm->pktmbuf_pools); i++)
+ {
+ if (bm->pktmbuf_pools[i])
+ {
+ clib_warning
+ ("WARNING: Failed to allocate mempool for CPU socket %u. "
+ "Threads running on socket %u will use socket %u mempool.",
+ socket_id, socket_id, i);
+ bm->pktmbuf_pools[socket_id] = bm->pktmbuf_pools[i];
+ return 0;
+ }
+ }
+
+ return clib_error_return (0, "failed to allocate mempool on socket %u",
+ socket_id);
}
+#endif
static void
vlib_serialize_tx (serialize_main_header_t * m, serialize_stream_t * s)
format_vlib_buffer_free_list (u8 * s, va_list * va)
{
vlib_buffer_free_list_t *f = va_arg (*va, vlib_buffer_free_list_t *);
+#if DPDK > 0
+ u32 threadnum = va_arg (*va, u32);
+ uword bytes_alloc, bytes_free, n_free, size;
+
+ if (!f)
+ return format (s, "%=7s%=30s%=12s%=12s%=12s%=12s%=12s%=12s",
+ "Thread", "Name", "Index", "Size", "Alloc", "Free",
+ "#Alloc", "#Free");
+
+ size = sizeof (vlib_buffer_t) + f->n_data_bytes;
+ n_free = vec_len (f->aligned_buffers) + vec_len (f->unaligned_buffers);
+ bytes_alloc = size * f->n_alloc;
+ bytes_free = size * n_free;
+
+ s = format (s, "%7d%30s%12d%12d%=12U%=12U%=12d%=12d", threadnum,
+#else
uword bytes_alloc, bytes_free, n_free, size;
if (!f)
bytes_free = size * n_free;
s = format (s, "%30s%12d%12d%=12U%=12U%=12d%=12d",
+#endif
f->name, f->index, f->n_data_bytes,
format_memory_size, bytes_alloc,
format_memory_size, bytes_free, f->n_alloc, n_free);
show_buffers (vlib_main_t * vm,
unformat_input_t * input, vlib_cli_command_t * cmd)
{
+#if DPDK > 0
+ vlib_buffer_main_t *bm;
+ vlib_buffer_free_list_t *f;
+ vlib_main_t *curr_vm;
+ u32 vm_index = 0;
+
+ vlib_cli_output (vm, "%U", format_vlib_buffer_free_list, 0, 0);
+
+ do
+ {
+ curr_vm = vec_len (vlib_mains) ? vlib_mains[vm_index] : vm;
+ bm = curr_vm->buffer_main;
+
+ /* *INDENT-OFF* */
+ pool_foreach (f, bm->buffer_free_list_pool, ({
+ vlib_cli_output (vm, "%U", format_vlib_buffer_free_list, f, vm_index);
+ }));
+ /* *INDENT-ON* */
+
+ vm_index++;
+ }
+ while (vm_index < vec_len (vlib_mains));
+
+#else
vlib_buffer_main_t *bm = vm->buffer_main;
vlib_buffer_free_list_t *f;
}));
/* *INDENT-ON* */
+#endif
return 0;
}
};
/* *INDENT-ON* */
+#if DPDK > 0
+#if CLIB_DEBUG > 0
+
+u32 *vlib_buffer_state_validation_lock;
+uword *vlib_buffer_state_validation_hash;
+void *vlib_buffer_state_heap;
+
+static clib_error_t *
+buffer_state_validation_init (vlib_main_t * vm)
+{
+ void *oldheap;
+
+ vlib_buffer_state_heap = mheap_alloc (0, 10 << 20);
+
+ oldheap = clib_mem_set_heap (vlib_buffer_state_heap);
+
+ vlib_buffer_state_validation_hash = hash_create (0, sizeof (uword));
+ vec_validate_aligned (vlib_buffer_state_validation_lock, 0,
+ CLIB_CACHE_LINE_BYTES);
+ clib_mem_set_heap (oldheap);
+ return 0;
+}
+
+VLIB_INIT_FUNCTION (buffer_state_validation_init);
+#endif
+#endif
+
+
+/** @endcond */
/*
* fd.io coding-style-patch-verification: ON
*
Code Review / vpp.git / blobdiff