diff options
Diffstat (limited to 'vlib')
| -rw-r--r-- | vlib/Makefile.am | 7 | ||||
| -rw-r--r-- | vlib/vlib/buffer.c | 514 | ||||
| -rw-r--r-- | vlib/vlib/dpdk_buffer.c | 1373 |
3 files changed, 515 insertions, 1379 deletions
diff --git a/vlib/Makefile.am b/vlib/Makefile.am index 07a34c563c5..3da0a3abbbb 100644 --- a/vlib/Makefile.am +++ b/vlib/Makefile.am @@ -25,6 +25,7 @@ vlib/config.h: echo "#define __PRE_DATA_SIZE" $(PRE_DATA_SIZE) > $@ libvlib_la_SOURCES = \ + vlib/buffer.c \ vlib/cli.c \ vlib/cli.h \ vlib/config.h \ @@ -44,12 +45,6 @@ libvlib_la_SOURCES = \ vlib/threads_cli.c \ vlib/trace.c -if WITH_DPDK - libvlib_la_SOURCES += vlib/dpdk_buffer.c -else - libvlib_la_SOURCES += vlib/buffer.c -endif - nobase_include_HEADERS = \ vlib/buffer_funcs.h \ vlib/buffer_node.h \ diff --git a/vlib/vlib/buffer.c b/vlib/vlib/buffer.c index 4b899a898cc..9516514a023 100644 --- a/vlib/vlib/buffer.c +++ b/vlib/vlib/buffer.c @@ -44,8 +44,44 @@ * 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) @@ -67,6 +103,30 @@ u8 * 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); @@ -76,6 +136,7 @@ format_vlib_buffer (u8 * s, va_list * args) if (b->flags & VLIB_BUFFER_NEXT_PRESENT) s = format (s, ", next-buffer 0x%x", b->next_buffer); +#endif return s; } @@ -92,6 +153,7 @@ format_vlib_buffer_and_data (u8 * s, va_list * args) return s; } +#if DPDK == 0 static u8 * format_vlib_buffer_known_state (u8 * s, va_list * args) { @@ -119,6 +181,7 @@ 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) @@ -137,6 +200,7 @@ 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, @@ -247,9 +311,11 @@ done: 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 @@ -294,6 +360,7 @@ vlib_buffer_validate_alloc_free (vlib_main_t * vm, } } +#endif /* Aligned copy routine. */ void vlib_aligned_memcpy (void *_dst, void *_src, int n_bytes) @@ -458,6 +525,63 @@ vlib_buffer_create_free_list_helper (vlib_main_t * vm, { 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) { @@ -497,6 +621,7 @@ vlib_buffer_create_free_list_helper (vlib_main_t * vm, if (!p) hash_set (bm->free_list_by_size, f->n_data_bytes, f->index); } +#endif return f->index; } @@ -546,11 +671,32 @@ static void 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); } @@ -562,6 +708,35 @@ vlib_buffer_delete_free_list (vlib_main_t * vm, u32 free_list_index) 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); @@ -580,6 +755,7 @@ vlib_buffer_delete_free_list (vlib_main_t * vm, u32 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. */ @@ -587,6 +763,63 @@ static uword 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; @@ -653,6 +886,7 @@ fill_free_list (vlib_main_t * vm, fl->buffer_init_function (vm, fl, bi, n_this_chunk); } return n_alloc; +#endif } always_inline uword @@ -670,8 +904,10 @@ alloc_from_free_list (vlib_main_t * vm, 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)) @@ -771,9 +1007,11 @@ alloc_from_free_list (vlib_main_t * vm, 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; } @@ -785,7 +1023,9 @@ u32 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, @@ -838,16 +1078,81 @@ vlib_set_buffer_free_callback (vlib_main_t * vm, void *fp) 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 */ @@ -1072,6 +1377,7 @@ again: } _vec_len (announce_list) = 0; } +#endif } void @@ -1088,6 +1394,7 @@ vlib_buffer_free_no_next (vlib_main_t * vm, u32 * buffers, u32 n_buffers) 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, @@ -1107,6 +1414,7 @@ vlib_packet_template_buffer_init (vlib_main_t * vm, b->current_length); } } +#endif void vlib_packet_template_init (vlib_main_t * vm, @@ -1116,6 +1424,21 @@ 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; @@ -1145,6 +1468,7 @@ vlib_packet_template_init (vlib_main_t * vm, 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 * @@ -1167,6 +1491,7 @@ vlib_packet_template_get_packet (vlib_main_t * vm, return b->data; } +#if DPDK == 0 void vlib_packet_template_get_packet_helper (vlib_main_t * vm, vlib_packet_template_t * t) @@ -1184,6 +1509,7 @@ vlib_packet_template_get_packet_helper (vlib_main_t * vm, _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, @@ -1277,6 +1603,124 @@ vlib_buffer_chain_append_data_with_alloc (vlib_main_t * vm, return copied; } +#if DPDK > 0 +clib_error_t * +vlib_buffer_pool_create (vlib_main_t * vm, unsigned num_mbufs, + unsigned socket_id) +{ + 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) { @@ -1480,6 +1924,22 @@ static u8 * 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) @@ -1493,6 +1953,7 @@ format_vlib_buffer_free_list (u8 * s, va_list * va) 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); @@ -1504,6 +1965,30 @@ static clib_error_t * 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; @@ -1514,6 +1999,7 @@ show_buffers (vlib_main_t * vm, })); /* *INDENT-ON* */ +#endif return 0; } @@ -1525,6 +2011,34 @@ VLIB_CLI_COMMAND (show_buffers_command, static) = { }; /* *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 diff --git a/vlib/vlib/dpdk_buffer.c b/vlib/vlib/dpdk_buffer.c deleted file mode 100644 index feb2bc6f739..00000000000 --- a/vlib/vlib/dpdk_buffer.c +++ /dev/null @@ -1,1373 +0,0 @@ -/* - * Copyright (c) 2015 Cisco and/or its affiliates. - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at: - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ -/* - * buffer.c: allocate/free network buffers. - * - * Copyright (c) 2008 Eliot Dresselhaus - * - * Permission is hereby granted, free of charge, to any person obtaining - * a copy of this software and associated documentation files (the - * "Software"), to deal in the Software without restriction, including - * without limitation the rights to use, copy, modify, merge, publish, - * distribute, sublicense, and/or sell copies of the Software, and to - * permit persons to whom the Software is furnished to do so, subject to - * the following conditions: - * - * The above copyright notice and this permission notice shall be - * included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE - * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION - * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION - * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. - */ - -/** - * @cond DPDK - * @file - * - * Allocate/free network buffers with DPDK. - */ - -#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> - -#include <vlib/vlib.h> - -#pragma weak rte_mem_virt2phy -#pragma weak rte_eal_has_hugepages -#pragma weak rte_socket_id -#pragma weak rte_pktmbuf_pool_create - -uword -vlib_buffer_length_in_chain_slow_path (vlib_main_t * vm, - vlib_buffer_t * b_first) -{ - vlib_buffer_t *b = b_first; - uword l_first = b_first->current_length; - uword l = 0; - while (b->flags & VLIB_BUFFER_NEXT_PRESENT) - { - b = vlib_get_buffer (vm, b->next_buffer); - l += b->current_length; - } - b_first->total_length_not_including_first_buffer = l; - b_first->flags |= VLIB_BUFFER_TOTAL_LENGTH_VALID; - return l + l_first; -} - -u8 * -format_vlib_buffer (u8 * s, va_list * args) -{ - vlib_buffer_t *b = va_arg (*args, vlib_buffer_t *); - 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); - } - - - return s; -} - -u8 * -format_vlib_buffer_and_data (u8 * s, va_list * args) -{ - vlib_buffer_t *b = va_arg (*args, vlib_buffer_t *); - - s = format (s, "%U, %U", - format_vlib_buffer, b, - format_hex_bytes, vlib_buffer_get_current (b), 64); - - return s; -} - -u8 * -format_vlib_buffer_contents (u8 * s, va_list * va) -{ - vlib_main_t *vm = va_arg (*va, vlib_main_t *); - vlib_buffer_t *b = va_arg (*va, vlib_buffer_t *); - - while (1) - { - vec_add (s, vlib_buffer_get_current (b), b->current_length); - if (!(b->flags & VLIB_BUFFER_NEXT_PRESENT)) - break; - b = vlib_get_buffer (vm, b->next_buffer); - } - - return s; -} - -vlib_main_t **vlib_mains; - -/* Aligned copy routine. */ -void -vlib_aligned_memcpy (void *_dst, void *_src, int n_bytes) -{ - vlib_copy_unit_t *dst = _dst; - vlib_copy_unit_t *src = _src; - - /* Arguments must be naturally aligned. */ - ASSERT (pointer_to_uword (dst) % sizeof (dst[0]) == 0); - ASSERT (pointer_to_uword (src) % sizeof (src[0]) == 0); - ASSERT (n_bytes % sizeof (dst[0]) == 0); - - if (4 * sizeof (dst[0]) == CLIB_CACHE_LINE_BYTES) - { - CLIB_PREFETCH (dst + 0, 4 * sizeof (dst[0]), WRITE); - CLIB_PREFETCH (src + 0, 4 * sizeof (src[0]), READ); - - while (n_bytes >= 4 * sizeof (dst[0])) - { - dst += 4; - src += 4; - n_bytes -= 4 * sizeof (dst[0]); - CLIB_PREFETCH (dst, 4 * sizeof (dst[0]), WRITE); - CLIB_PREFETCH (src, 4 * sizeof (src[0]), READ); - dst[-4] = src[-4]; - dst[-3] = src[-3]; - dst[-2] = src[-2]; - dst[-1] = src[-1]; - } - } - else if (8 * sizeof (dst[0]) == CLIB_CACHE_LINE_BYTES) - { - CLIB_PREFETCH (dst + 0, 8 * sizeof (dst[0]), WRITE); - CLIB_PREFETCH (src + 0, 8 * sizeof (src[0]), READ); - - while (n_bytes >= 8 * sizeof (dst[0])) - { - dst += 8; - src += 8; - n_bytes -= 8 * sizeof (dst[0]); - CLIB_PREFETCH (dst, 8 * sizeof (dst[0]), WRITE); - CLIB_PREFETCH (src, 8 * sizeof (src[0]), READ); - dst[-8] = src[-8]; - dst[-7] = src[-7]; - dst[-6] = src[-6]; - dst[-5] = src[-5]; - dst[-4] = src[-4]; - dst[-3] = src[-3]; - dst[-2] = src[-2]; - dst[-1] = src[-1]; - } - } - else - /* Cache line size unknown: fall back to slow version. */ ; - - while (n_bytes > 0) - { - *dst++ = *src++; - n_bytes -= 1 * sizeof (dst[0]); - } -} - -#define BUFFERS_PER_COPY (sizeof (vlib_copy_unit_t) / sizeof (u32)) - -/* Make sure we have at least given number of unaligned buffers. */ -static void -fill_unaligned (vlib_main_t * vm, - vlib_buffer_free_list_t * free_list, - uword n_unaligned_buffers) -{ - word la = vec_len (free_list->aligned_buffers); - word lu = vec_len (free_list->unaligned_buffers); - - /* Aligned come in aligned copy-sized chunks. */ - ASSERT (la % BUFFERS_PER_COPY == 0); - - ASSERT (la >= n_unaligned_buffers); - - while (lu < n_unaligned_buffers) - { - /* Copy 4 buffers from end of aligned vector to unaligned vector. */ - vec_add (free_list->unaligned_buffers, - free_list->aligned_buffers + la - BUFFERS_PER_COPY, - BUFFERS_PER_COPY); - la -= BUFFERS_PER_COPY; - lu += BUFFERS_PER_COPY; - } - _vec_len (free_list->aligned_buffers) = la; -} - -/* After free aligned buffers may not contain even sized chunks. */ -static void -trim_aligned (vlib_buffer_free_list_t * f) -{ - uword l, n_trim; - - /* Add unaligned to aligned before trim. */ - l = vec_len (f->unaligned_buffers); - if (l > 0) - { - vec_add_aligned (f->aligned_buffers, f->unaligned_buffers, l, - /* align */ sizeof (vlib_copy_unit_t)); - - _vec_len (f->unaligned_buffers) = 0; - } - - /* Remove unaligned buffers from end of aligned vector and save for next trim. */ - l = vec_len (f->aligned_buffers); - n_trim = l % BUFFERS_PER_COPY; - if (n_trim) - { - /* Trim aligned -> unaligned. */ - vec_add (f->unaligned_buffers, f->aligned_buffers + l - n_trim, n_trim); - - /* Remove from aligned. */ - _vec_len (f->aligned_buffers) = l - n_trim; - } -} - -static void -merge_free_lists (vlib_buffer_free_list_t * dst, - vlib_buffer_free_list_t * src) -{ - uword l; - u32 *d; - - trim_aligned (src); - trim_aligned (dst); - - l = vec_len (src->aligned_buffers); - if (l > 0) - { - vec_add2_aligned (dst->aligned_buffers, d, l, - /* align */ sizeof (vlib_copy_unit_t)); - vlib_aligned_memcpy (d, src->aligned_buffers, l * sizeof (d[0])); - vec_free (src->aligned_buffers); - } - - l = vec_len (src->unaligned_buffers); - if (l > 0) - { - vec_add (dst->unaligned_buffers, src->unaligned_buffers, l); - vec_free (src->unaligned_buffers); - } -} - -always_inline u32 -vlib_buffer_get_free_list_with_size (vlib_main_t * vm, u32 size) -{ - vlib_buffer_main_t *bm = vm->buffer_main; - - size = vlib_buffer_round_size (size); - uword *p = hash_get (bm->free_list_by_size, size); - return p ? p[0] : ~0; -} - -/* Add buffer free list. */ -static u32 -vlib_buffer_create_free_list_helper (vlib_main_t * vm, - u32 n_data_bytes, - u32 is_public, u32 is_default, u8 * name) -{ - vlib_buffer_main_t *bm = vm->buffer_main; - vlib_buffer_free_list_t *f; - 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; - } - - return f->index; -} - -u32 -vlib_buffer_create_free_list (vlib_main_t * vm, u32 n_data_bytes, - char *fmt, ...) -{ - va_list va; - u8 *name; - - va_start (va, fmt); - name = va_format (0, fmt, &va); - va_end (va); - - return vlib_buffer_create_free_list_helper (vm, n_data_bytes, - /* is_public */ 0, - /* is_default */ 0, - name); -} - -u32 -vlib_buffer_get_or_create_free_list (vlib_main_t * vm, u32 n_data_bytes, - char *fmt, ...) -{ - u32 i = vlib_buffer_get_free_list_with_size (vm, n_data_bytes); - - if (i == ~0) - { - va_list va; - u8 *name; - - va_start (va, fmt); - name = va_format (0, fmt, &va); - va_end (va); - - i = vlib_buffer_create_free_list_helper (vm, n_data_bytes, - /* is_public */ 1, - /* is_default */ 0, - name); - } - - return i; -} - -static void -del_free_list (vlib_main_t * vm, vlib_buffer_free_list_t * f) -{ - u32 i; - 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); - vec_free (f->unaligned_buffers); - vec_free (f->aligned_buffers); -} - -/* Add buffer free list. */ -void -vlib_buffer_delete_free_list (vlib_main_t * vm, u32 free_list_index) -{ - vlib_buffer_main_t *bm = vm->buffer_main; - vlib_buffer_free_list_t *f; - u32 merge_index; - 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); - } - -} - -/* Make sure free list has at least given number of free buffers. */ -static uword -fill_free_list (vlib_main_t * vm, - vlib_buffer_free_list_t * fl, uword min_free_buffers) -{ - 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; -} - -always_inline uword -copy_alignment (u32 * x) -{ - return (pointer_to_uword (x) / sizeof (x[0])) % BUFFERS_PER_COPY; -} - -static u32 -alloc_from_free_list (vlib_main_t * vm, - vlib_buffer_free_list_t * free_list, - u32 * alloc_buffers, u32 n_alloc_buffers) -{ - u32 *dst, *u_src; - uword u_len, n_left; - uword n_unaligned_start, n_unaligned_end, n_filled; - - n_left = n_alloc_buffers; - dst = alloc_buffers; - n_unaligned_start = ((BUFFERS_PER_COPY - copy_alignment (dst)) - & (BUFFERS_PER_COPY - 1)); - - n_filled = fill_free_list (vm, free_list, n_alloc_buffers); - if (n_filled == 0) - return 0; - - n_left = n_filled < n_left ? n_filled : n_left; - n_alloc_buffers = n_left; - - if (n_unaligned_start >= n_left) - { - n_unaligned_start = n_left; - n_unaligned_end = 0; - } - else - n_unaligned_end = copy_alignment (dst + n_alloc_buffers); - - fill_unaligned (vm, free_list, n_unaligned_start + n_unaligned_end); - - u_len = vec_len (free_list->unaligned_buffers); - u_src = free_list->unaligned_buffers + u_len - 1; - - if (n_unaligned_start) - { - uword n_copy = n_unaligned_start; - if (n_copy > n_left) - n_copy = n_left; - n_left -= n_copy; - - while (n_copy > 0) - { - *dst++ = *u_src--; - n_copy--; - u_len--; - } - - /* Now dst should be aligned. */ - if (n_left > 0) - ASSERT (pointer_to_uword (dst) % sizeof (vlib_copy_unit_t) == 0); - } - - /* Aligned copy. */ - { - vlib_copy_unit_t *d, *s; - uword n_copy; - - if (vec_len (free_list->aligned_buffers) < - ((n_left / BUFFERS_PER_COPY) * BUFFERS_PER_COPY)) - abort (); - - n_copy = n_left / BUFFERS_PER_COPY; - n_left = n_left % BUFFERS_PER_COPY; - - /* Remove buffers from aligned free list. */ - _vec_len (free_list->aligned_buffers) -= n_copy * BUFFERS_PER_COPY; - - s = (vlib_copy_unit_t *) vec_end (free_list->aligned_buffers); - d = (vlib_copy_unit_t *) dst; - - /* Fast path loop. */ - while (n_copy >= 4) - { - d[0] = s[0]; - d[1] = s[1]; - d[2] = s[2]; - d[3] = s[3]; - n_copy -= 4; - s += 4; - d += 4; - } - - while (n_copy >= 1) - { - d[0] = s[0]; - n_copy -= 1; - s += 1; - d += 1; - } - - dst = (void *) d; - } - - /* Unaligned copy. */ - ASSERT (n_unaligned_end == n_left); - while (n_left > 0) - { - *dst++ = *u_src--; - n_left--; - u_len--; - } - - if (!free_list->unaligned_buffers) - ASSERT (u_len == 0); - else - _vec_len (free_list->unaligned_buffers) = u_len; - - return n_alloc_buffers; -} - -/* Allocate a given number of buffers into given array. - Returns number actually allocated which will be either zero or - number requested. */ -u32 -vlib_buffer_alloc (vlib_main_t * vm, u32 * buffers, u32 n_buffers) -{ - vlib_buffer_main_t *bm = vm->buffer_main; - - return alloc_from_free_list - (vm, - pool_elt_at_index (bm->buffer_free_list_pool, - VLIB_BUFFER_DEFAULT_FREE_LIST_INDEX), - buffers, n_buffers); -} - -u32 -vlib_buffer_alloc_from_free_list (vlib_main_t * vm, - u32 * buffers, - u32 n_buffers, u32 free_list_index) -{ - vlib_buffer_main_t *bm = vm->buffer_main; - vlib_buffer_free_list_t *f; - f = pool_elt_at_index (bm->buffer_free_list_pool, free_list_index); - return alloc_from_free_list (vm, f, buffers, n_buffers); -} - -always_inline void -add_buffer_to_free_list (vlib_main_t * vm, - vlib_buffer_free_list_t * f, - u32 buffer_index, u8 do_init) -{ - vlib_buffer_t *b; - b = vlib_get_buffer (vm, buffer_index); - if (PREDICT_TRUE (do_init)) - vlib_buffer_init_for_free_list (b, f); - vec_add1_aligned (f->aligned_buffers, buffer_index, - sizeof (vlib_copy_unit_t)); -} - -always_inline vlib_buffer_free_list_t * -buffer_get_free_list (vlib_main_t * vm, vlib_buffer_t * b, u32 * index) -{ - vlib_buffer_main_t *bm = vm->buffer_main; - u32 i; - - *index = i = b->free_list_index; - return pool_elt_at_index (bm->buffer_free_list_pool, i); -} - -void * -vlib_set_buffer_free_callback (vlib_main_t * vm, void *fp) -{ - vlib_buffer_main_t *bm = vm->buffer_main; - void *rv = bm->buffer_free_callback; - - bm->buffer_free_callback = fp; - return rv; -} - -static_always_inline void -vlib_buffer_free_inline (vlib_main_t * vm, - u32 * buffers, u32 n_buffers, u32 follow_buffer_next) -{ - 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; - } -} - -void -vlib_buffer_free (vlib_main_t * vm, u32 * buffers, u32 n_buffers) -{ - vlib_buffer_free_inline (vm, buffers, n_buffers, /* follow_buffer_next */ - 1); -} - -void -vlib_buffer_free_no_next (vlib_main_t * vm, u32 * buffers, u32 n_buffers) -{ - vlib_buffer_free_inline (vm, buffers, n_buffers, /* follow_buffer_next */ - 0); -} - -/* Copy template packet data into buffers as they are allocated. */ -__attribute__ ((unused)) - static void - vlib_packet_template_buffer_init (vlib_main_t * vm, - vlib_buffer_free_list_t * fl, - u32 * buffers, u32 n_buffers) -{ - vlib_packet_template_t *t = - uword_to_pointer (fl->buffer_init_function_opaque, - vlib_packet_template_t *); - uword i; - - for (i = 0; i < n_buffers; i++) - { - vlib_buffer_t *b = vlib_get_buffer (vm, buffers[i]); - ASSERT (b->current_length == vec_len (t->packet_data)); - clib_memcpy (vlib_buffer_get_current (b), t->packet_data, - b->current_length); - } -} - -void -vlib_packet_template_init (vlib_main_t * vm, - vlib_packet_template_t * t, - void *packet_data, - uword n_packet_data_bytes, - uword min_n_buffers_each_physmem_alloc, - char *fmt, ...) -{ - 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); -} - -void * -vlib_packet_template_get_packet (vlib_main_t * vm, - vlib_packet_template_t * t, u32 * bi_result) -{ - u32 bi; - vlib_buffer_t *b; - - if (vlib_buffer_alloc (vm, &bi, 1) != 1) - return 0; - - *bi_result = bi; - - b = vlib_get_buffer (vm, bi); - clib_memcpy (vlib_buffer_get_current (b), - t->packet_data, vec_len (t->packet_data)); - b->current_length = vec_len (t->packet_data); - - return b->data; -} - -/* Append given data to end of buffer, possibly allocating new buffers. */ -u32 -vlib_buffer_add_data (vlib_main_t * vm, - u32 free_list_index, - u32 buffer_index, void *data, u32 n_data_bytes) -{ - u32 n_buffer_bytes, n_left, n_left_this_buffer, bi; - vlib_buffer_t *b; - void *d; - - bi = buffer_index; - if (bi == 0 - && 1 != vlib_buffer_alloc_from_free_list (vm, &bi, 1, free_list_index)) - goto out_of_buffers; - - d = data; - n_left = n_data_bytes; - n_buffer_bytes = vlib_buffer_free_list_buffer_size (vm, free_list_index); - - b = vlib_get_buffer (vm, bi); - b->flags &= ~VLIB_BUFFER_TOTAL_LENGTH_VALID; - - /* Get to the end of the chain before we try to append data... */ - while (b->flags & VLIB_BUFFER_NEXT_PRESENT) - b = vlib_get_buffer (vm, b->next_buffer); - - while (1) - { - u32 n; - - ASSERT (n_buffer_bytes >= b->current_length); - n_left_this_buffer = - n_buffer_bytes - (b->current_data + b->current_length); - n = clib_min (n_left_this_buffer, n_left); - clib_memcpy (vlib_buffer_get_current (b) + b->current_length, d, n); - b->current_length += n; - n_left -= n; - if (n_left == 0) - break; - - d += n; - if (1 != - vlib_buffer_alloc_from_free_list (vm, &b->next_buffer, 1, - free_list_index)) - goto out_of_buffers; - - b->flags |= VLIB_BUFFER_NEXT_PRESENT; - - b = vlib_get_buffer (vm, b->next_buffer); - } - - return bi; - -out_of_buffers: - clib_error ("out of buffers"); - return bi; -} - -u16 -vlib_buffer_chain_append_data_with_alloc (vlib_main_t * vm, - u32 free_list_index, - vlib_buffer_t * first, - vlib_buffer_t ** last, - void *data, u16 data_len) -{ - vlib_buffer_t *l = *last; - u32 n_buffer_bytes = - vlib_buffer_free_list_buffer_size (vm, free_list_index); - u16 copied = 0; - ASSERT (n_buffer_bytes >= l->current_length + l->current_data); - while (data_len) - { - u16 max = n_buffer_bytes - l->current_length - l->current_data; - if (max == 0) - { - if (1 != - vlib_buffer_alloc_from_free_list (vm, &l->next_buffer, 1, - free_list_index)) - return copied; - *last = l = vlib_buffer_chain_buffer (vm, first, l, l->next_buffer); - max = n_buffer_bytes - l->current_length - l->current_data; - } - - u16 len = (data_len > max) ? max : data_len; - clib_memcpy (vlib_buffer_get_current (l) + l->current_length, - data + copied, len); - vlib_buffer_chain_increase_length (first, l, len); - data_len -= len; - copied += len; - } - return copied; -} - -clib_error_t * -vlib_buffer_pool_create (vlib_main_t * vm, unsigned num_mbufs, - unsigned socket_id) -{ - 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); -} - - -static void -vlib_serialize_tx (serialize_main_header_t * m, serialize_stream_t * s) -{ - vlib_main_t *vm; - vlib_serialize_buffer_main_t *sm; - uword n, n_bytes_to_write; - vlib_buffer_t *last; - - n_bytes_to_write = s->current_buffer_index; - sm = - uword_to_pointer (s->data_function_opaque, - vlib_serialize_buffer_main_t *); - vm = sm->vlib_main; - - ASSERT (sm->tx.max_n_data_bytes_per_chain > 0); - if (serialize_stream_is_end_of_stream (s) - || sm->tx.n_total_data_bytes + n_bytes_to_write > - sm->tx.max_n_data_bytes_per_chain) - { - vlib_process_t *p = vlib_get_current_process (vm); - - last = vlib_get_buffer (vm, sm->last_buffer); - last->current_length = n_bytes_to_write; - - vlib_set_next_frame_buffer (vm, &p->node_runtime, sm->tx.next_index, - sm->first_buffer); - - sm->first_buffer = sm->last_buffer = ~0; - sm->tx.n_total_data_bytes = 0; - } - - else if (n_bytes_to_write == 0 && s->n_buffer_bytes == 0) - { - ASSERT (sm->first_buffer == ~0); - ASSERT (sm->last_buffer == ~0); - n = - vlib_buffer_alloc_from_free_list (vm, &sm->first_buffer, 1, - sm->tx.free_list_index); - if (n != 1) - serialize_error (m, - clib_error_create - ("vlib_buffer_alloc_from_free_list fails")); - sm->last_buffer = sm->first_buffer; - s->n_buffer_bytes = - vlib_buffer_free_list_buffer_size (vm, sm->tx.free_list_index); - } - - if (n_bytes_to_write > 0) - { - vlib_buffer_t *prev = vlib_get_buffer (vm, sm->last_buffer); - n = - vlib_buffer_alloc_from_free_list (vm, &sm->last_buffer, 1, - sm->tx.free_list_index); - if (n != 1) - serialize_error (m, - clib_error_create - ("vlib_buffer_alloc_from_free_list fails")); - sm->tx.n_total_data_bytes += n_bytes_to_write; - prev->current_length = n_bytes_to_write; - prev->next_buffer = sm->last_buffer; - prev->flags |= VLIB_BUFFER_NEXT_PRESENT; - } - - if (sm->last_buffer != ~0) - { - last = vlib_get_buffer (vm, sm->last_buffer); - s->buffer = vlib_buffer_get_current (last); - s->current_buffer_index = 0; - ASSERT (last->current_data == s->current_buffer_index); - } -} - -static void -vlib_serialize_rx (serialize_main_header_t * m, serialize_stream_t * s) -{ - vlib_main_t *vm; - vlib_serialize_buffer_main_t *sm; - vlib_buffer_t *last; - - sm = - uword_to_pointer (s->data_function_opaque, - vlib_serialize_buffer_main_t *); - vm = sm->vlib_main; - - if (serialize_stream_is_end_of_stream (s)) - return; - - if (sm->last_buffer != ~0) - { - last = vlib_get_buffer (vm, sm->last_buffer); - - if (last->flags & VLIB_BUFFER_NEXT_PRESENT) - sm->last_buffer = last->next_buffer; - else - { - vlib_buffer_free (vm, &sm->first_buffer, /* count */ 1); - sm->first_buffer = sm->last_buffer = ~0; - } - } - - if (sm->last_buffer == ~0) - { - while (clib_fifo_elts (sm->rx.buffer_fifo) == 0) - { - sm->rx.ready_one_time_event = - vlib_process_create_one_time_event (vm, vlib_current_process (vm), - ~0); - vlib_process_wait_for_one_time_event (vm, /* no event data */ 0, - sm->rx.ready_one_time_event); - } - - clib_fifo_sub1 (sm->rx.buffer_fifo, sm->first_buffer); - sm->last_buffer = sm->first_buffer; - } - - ASSERT (sm->last_buffer != ~0); - - last = vlib_get_buffer (vm, sm->last_buffer); - s->current_buffer_index = 0; - s->buffer = vlib_buffer_get_current (last); - s->n_buffer_bytes = last->current_length; -} - -static void -serialize_open_vlib_helper (serialize_main_t * m, - vlib_main_t * vm, - vlib_serialize_buffer_main_t * sm, uword is_read) -{ - /* Initialize serialize main but save overflow buffer for re-use between calls. */ - { - u8 *save = m->stream.overflow_buffer; - memset (m, 0, sizeof (m[0])); - m->stream.overflow_buffer = save; - if (save) - _vec_len (save) = 0; - } - - sm->first_buffer = sm->last_buffer = ~0; - if (is_read) - clib_fifo_reset (sm->rx.buffer_fifo); - else - sm->tx.n_total_data_bytes = 0; - sm->vlib_main = vm; - m->header.data_function = is_read ? vlib_serialize_rx : vlib_serialize_tx; - m->stream.data_function_opaque = pointer_to_uword (sm); -} - -void -serialize_open_vlib_buffer (serialize_main_t * m, vlib_main_t * vm, - vlib_serialize_buffer_main_t * sm) -{ - serialize_open_vlib_helper (m, vm, sm, /* is_read */ 0); -} - -void -unserialize_open_vlib_buffer (serialize_main_t * m, vlib_main_t * vm, - vlib_serialize_buffer_main_t * sm) -{ - serialize_open_vlib_helper (m, vm, sm, /* is_read */ 1); -} - -u32 -serialize_close_vlib_buffer (serialize_main_t * m) -{ - vlib_serialize_buffer_main_t *sm - = uword_to_pointer (m->stream.data_function_opaque, - vlib_serialize_buffer_main_t *); - vlib_buffer_t *last; - serialize_stream_t *s = &m->stream; - - last = vlib_get_buffer (sm->vlib_main, sm->last_buffer); - last->current_length = s->current_buffer_index; - - if (vec_len (s->overflow_buffer) > 0) - { - sm->last_buffer - = vlib_buffer_add_data (sm->vlib_main, sm->tx.free_list_index, - sm->last_buffer == ~0 ? 0 : sm->last_buffer, - s->overflow_buffer, - vec_len (s->overflow_buffer)); - _vec_len (s->overflow_buffer) = 0; - } - - return sm->first_buffer; -} - -void -unserialize_close_vlib_buffer (serialize_main_t * m) -{ - vlib_serialize_buffer_main_t *sm - = uword_to_pointer (m->stream.data_function_opaque, - vlib_serialize_buffer_main_t *); - if (sm->first_buffer != ~0) - vlib_buffer_free_one (sm->vlib_main, sm->first_buffer); - clib_fifo_reset (sm->rx.buffer_fifo); - if (m->stream.overflow_buffer) - _vec_len (m->stream.overflow_buffer) = 0; -} - -static u8 * -format_vlib_buffer_free_list (u8 * s, va_list * va) -{ - vlib_buffer_free_list_t *f = va_arg (*va, vlib_buffer_free_list_t *); - 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, - f->name, f->index, f->n_data_bytes, - format_memory_size, bytes_alloc, - format_memory_size, bytes_free, f->n_alloc, n_free); - - return s; -} - -static clib_error_t * -show_buffers (vlib_main_t * vm, - unformat_input_t * input, vlib_cli_command_t * cmd) -{ - 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)); - - return 0; -} - -/* *INDENT-OFF* */ -VLIB_CLI_COMMAND (show_buffers_command, static) = { - .path = "show buffers", - .short_help = "Show packet buffer allocation", - .function = show_buffers, -}; -/* *INDENT-ON* */ - -#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 - -/** @endcond */ -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ |