diff options
Diffstat (limited to 'extras/libmemif/src/main.c')
| -rw-r--r-- | extras/libmemif/src/main.c | 850 |
1 files changed, 323 insertions, 527 deletions
diff --git a/extras/libmemif/src/main.c b/extras/libmemif/src/main.c index cb24083c8e3..f83f71064e6 100644 --- a/extras/libmemif/src/main.c +++ b/extras/libmemif/src/main.c @@ -166,6 +166,12 @@ memif_strerror (int err_code) return memif_buf; } +uint16_t +memif_get_version () +{ + return MEMIF_VERSION; +} + #define DBG_TX_BUF (0) #define DBG_RX_BUF (1) @@ -191,7 +197,7 @@ print_bytes (void *data, uint16_t len, uint8_t q) int memif_syscall_error_handler (int err_code) { - DBG_UNIX ("%s", strerror (err_code)); + DBG ("%s", strerror (err_code)); if (err_code == 0) return MEMIF_ERR_SUCCESS; @@ -401,18 +407,45 @@ memif_control_fd_update_register (memif_control_fd_update_t * cb) lm->control_fd_update = cb; } +static void +memif_alloc_register (memif_alloc_t * ma) +{ + libmemif_main_t *lm = &libmemif_main; + lm->alloc = ma; +} + +static void +memif_free_register (memif_free_t * mf) +{ + libmemif_main_t *lm = &libmemif_main; + lm->free = mf; +} + int -memif_init (memif_control_fd_update_t * on_control_fd_update, char *app_name) +memif_init (memif_control_fd_update_t * on_control_fd_update, char *app_name, + memif_alloc_t * memif_alloc, memif_free_t * memif_free) { int err = MEMIF_ERR_SUCCESS; /* 0 */ libmemif_main_t *lm = &libmemif_main; memset (lm, 0, sizeof (libmemif_main_t)); - if (app_name) + if (memif_alloc != NULL) { - uint8_t len = (strlen (app_name) < MEMIF_NAME_LEN) - ? MEMIF_NAME_LEN : strlen (app_name); - strncpy ((char *) lm->app_name, app_name, strlen (app_name)); + memif_alloc_register (memif_alloc); + } + else + memif_alloc_register (malloc); + + if (memif_free != NULL) + memif_free_register (memif_free); + else + memif_free_register (free); + + if (app_name != NULL) + { + uint8_t len = (strlen (app_name) > MEMIF_NAME_LEN) + ? strlen (app_name) : MEMIF_NAME_LEN; + strncpy ((char *) lm->app_name, app_name, len); } else { @@ -443,13 +476,33 @@ memif_init (memif_control_fd_update_t * on_control_fd_update, char *app_name) lm->pending_list_len = 1; lm->control_list = - malloc (sizeof (memif_list_elt_t) * lm->control_list_len); + lm->alloc (sizeof (memif_list_elt_t) * lm->control_list_len); + if (lm->control_list == NULL) + { + err = MEMIF_ERR_NOMEM; + goto error; + } lm->interrupt_list = - malloc (sizeof (memif_list_elt_t) * lm->interrupt_list_len); + lm->alloc (sizeof (memif_list_elt_t) * lm->interrupt_list_len); + if (lm->interrupt_list == NULL) + { + err = MEMIF_ERR_NOMEM; + goto error; + } lm->listener_list = - malloc (sizeof (memif_list_elt_t) * lm->listener_list_len); + lm->alloc (sizeof (memif_list_elt_t) * lm->listener_list_len); + if (lm->listener_list == NULL) + { + err = MEMIF_ERR_NOMEM; + goto error; + } lm->pending_list = - malloc (sizeof (memif_list_elt_t) * lm->pending_list_len); + lm->alloc (sizeof (memif_list_elt_t) * lm->pending_list_len); + if (lm->pending_list == NULL) + { + err = MEMIF_ERR_NOMEM; + goto error; + } int i; for (i = 0; i < lm->control_list_len; i++) @@ -478,9 +531,8 @@ memif_init (memif_control_fd_update_t * on_control_fd_update, char *app_name) lm->timerfd = timerfd_create (CLOCK_REALTIME, TFD_NONBLOCK); if (lm->timerfd < 0) { - err = errno; - DBG ("timerfd: %s", strerror (err)); - return memif_syscall_error_handler (err); + err = memif_syscall_error_handler (errno); + goto error; } lm->arm.it_value.tv_sec = 2; @@ -491,10 +543,15 @@ memif_init (memif_control_fd_update_t * on_control_fd_update, char *app_name) if (lm->control_fd_update (lm->timerfd, MEMIF_FD_EVENT_READ) < 0) { DBG ("callback type memif_control_fd_update_t error!"); - return MEMIF_ERR_CB_FDUPDATE; + err = MEMIF_ERR_CB_FDUPDATE; + goto error; } - return 0; + return err; + +error: + memif_cleanup (); + return err; } static inline memif_ring_t * @@ -520,8 +577,8 @@ memif_set_rx_mode (memif_conn_handle_t c, memif_rx_mode_t rx_mode, if (conn == NULL) return MEMIF_ERR_NOCONN; uint8_t num = - (conn->args.is_master) ? conn->run_args.num_s2m_rings : conn-> - run_args.num_m2s_rings; + (conn->args.is_master) ? conn->run_args.num_s2m_rings : conn->run_args. + num_m2s_rings; if (qid >= num) return MEMIF_ERR_QID; @@ -536,6 +593,7 @@ memif_create (memif_conn_handle_t * c, memif_conn_args_t * args, memif_connection_update_t * on_disconnect, memif_interrupt_t * on_interrupt, void *private_ctx) { + libmemif_main_t *lm = &libmemif_main; int err, i, index, sockfd = -1; memif_list_elt_t list_elt; memif_connection_t *conn = (memif_connection_t *) * c; @@ -544,16 +602,14 @@ memif_create (memif_conn_handle_t * c, memif_conn_args_t * args, DBG ("This handle already points to existing memif."); return MEMIF_ERR_CONN; } - conn = (memif_connection_t *) malloc (sizeof (memif_connection_t)); + conn = (memif_connection_t *) lm->alloc (sizeof (memif_connection_t)); if (conn == NULL) { - err = memif_syscall_error_handler (errno); + err = MEMIF_ERR_NOMEM; goto error; } memset (conn, 0, sizeof (memif_connection_t)); - libmemif_main_t *lm = &libmemif_main; - conn->args.interface_id = args->interface_id; if (args->log2_ring_size == 0) @@ -591,13 +647,14 @@ memif_create (memif_conn_handle_t * c, memif_conn_args_t * args, strncpy ((char *) conn->args.interface_name, (char *) args->interface_name, l); - l = strlen ((char *) args->instance_name); - strncpy ((char *) conn->args.instance_name, (char *) args->instance_name, - l); - /* allocate and initialize socket_filename so it can be copyed to sun_path without memory leaks */ - conn->args.socket_filename = malloc (sizeof (char *) * 108); + conn->args.socket_filename = lm->alloc (sizeof (char *) * 108); + if (conn->args.socket_filename == NULL) + { + err = MEMIF_ERR_NOMEM; + goto error; + } memset (conn->args.socket_filename, 0, 108 * sizeof (char *)); if (args->socket_filename) @@ -668,10 +725,20 @@ memif_create (memif_conn_handle_t * c, memif_conn_args_t * args, return memif_syscall_error_handler (errno); } DBG ("creating socket file"); - ms = malloc (sizeof (memif_socket_t)); + ms = lm->alloc (sizeof (memif_socket_t)); + if (ms == NULL) + { + err = MEMIF_ERR_NOMEM; + goto error; + } ms->filename = - malloc (strlen ((char *) conn->args.socket_filename) + - sizeof (char)); + lm->alloc (strlen ((char *) conn->args.socket_filename) + + sizeof (char)); + if (ms->filename == NULL) + { + err = MEMIF_ERR_NOMEM; + goto error; + } memset (ms->filename, 0, strlen ((char *) conn->args.socket_filename) + sizeof (char)); @@ -680,7 +747,13 @@ memif_create (memif_conn_handle_t * c, memif_conn_args_t * args, strlen ((char *) conn->args.socket_filename)); ms->interface_list_len = 1; ms->interface_list = - malloc (sizeof (memif_list_elt_t) * ms->interface_list_len); + lm->alloc (sizeof (memif_list_elt_t) * + ms->interface_list_len); + if (ms->interface_list == NULL) + { + err = MEMIF_ERR_NOMEM; + goto error; + } ms->interface_list[0].key = -1; ms->interface_list[0].data_struct = NULL; struct sockaddr_un un = { 0 }; @@ -772,9 +845,9 @@ error: close (sockfd); sockfd = -1; if (conn->args.socket_filename) - free (conn->args.socket_filename); + lm->free (conn->args.socket_filename); if (conn != NULL) - free (conn); + lm->free (conn); *c = conn = NULL; return err; } @@ -855,20 +928,21 @@ memif_control_fd_handler (int fd, uint8_t events) if (((memif_connection_t *) e->data_struct)->on_interrupt != NULL) { num = - (((memif_connection_t *) e->data_struct)-> - args.is_master) ? ((memif_connection_t *) e-> - data_struct)->run_args. - num_s2m_rings : ((memif_connection_t *) e->data_struct)-> - run_args.num_m2s_rings; + (((memif_connection_t *) e->data_struct)->args. + is_master) ? ((memif_connection_t *) e->data_struct)-> + run_args.num_s2m_rings : ((memif_connection_t *) e-> + data_struct)->run_args. + num_m2s_rings; for (i = 0; i < num; i++) { - if (((memif_connection_t *) e->data_struct)-> - rx_queues[i].int_fd == fd) + if (((memif_connection_t *) e->data_struct)->rx_queues[i]. + int_fd == fd) { - ((memif_connection_t *) e->data_struct)-> - on_interrupt ((void *) e->data_struct, - ((memif_connection_t *) e-> - data_struct)->private_ctx, i); + ((memif_connection_t *) e-> + data_struct)->on_interrupt ((void *) e->data_struct, + ((memif_connection_t *) + e->data_struct)-> + private_ctx, i); return MEMIF_ERR_SUCCESS; } } @@ -895,24 +969,24 @@ memif_control_fd_handler (int fd, uint8_t events) if (events & MEMIF_FD_EVENT_READ) { err = - ((memif_connection_t *) e->data_struct)-> - read_fn (e->data_struct); + ((memif_connection_t *) e->data_struct)->read_fn (e-> + data_struct); if (err != MEMIF_ERR_SUCCESS) return err; } if (events & MEMIF_FD_EVENT_WRITE) { err = - ((memif_connection_t *) e->data_struct)-> - write_fn (e->data_struct); + ((memif_connection_t *) e->data_struct)->write_fn (e-> + data_struct); if (err != MEMIF_ERR_SUCCESS) return err; } if (events & MEMIF_FD_EVENT_ERROR) { err = - ((memif_connection_t *) e->data_struct)-> - error_fn (e->data_struct); + ((memif_connection_t *) e->data_struct)->error_fn (e-> + data_struct); if (err != MEMIF_ERR_SUCCESS) return err; } @@ -985,12 +1059,12 @@ memif_cancel_poll_event () } static void -memif_msg_queue_free (memif_msg_queue_elt_t ** e) +memif_msg_queue_free (libmemif_main_t * lm, memif_msg_queue_elt_t ** e) { if (*e == NULL) return; - memif_msg_queue_free (&(*e)->next); - free (*e); + memif_msg_queue_free (lm, &(*e)->next); + lm->free (*e); *e = NULL; return; } @@ -1029,8 +1103,8 @@ memif_disconnect_internal (memif_connection_t * c) if (c->tx_queues != NULL) { num = - (c->args.is_master) ? c->run_args.num_m2s_rings : c-> - run_args.num_s2m_rings; + (c->args.is_master) ? c->run_args.num_m2s_rings : c->run_args. + num_s2m_rings; for (i = 0; i < num; i++) { mq = &c->tx_queues[i]; @@ -1043,15 +1117,15 @@ memif_disconnect_internal (memif_connection_t * c) mq->int_fd = -1; } } - free (c->tx_queues); + lm->free (c->tx_queues); c->tx_queues = NULL; } if (c->rx_queues != NULL) { num = - (c->args.is_master) ? c->run_args.num_s2m_rings : c-> - run_args.num_m2s_rings; + (c->args.is_master) ? c->run_args.num_s2m_rings : c->run_args. + num_m2s_rings; for (i = 0; i < num; i++) { mq = &c->rx_queues[i]; @@ -1068,7 +1142,7 @@ memif_disconnect_internal (memif_connection_t * c) mq->int_fd = -1; } } - free (c->rx_queues); + lm->free (c->rx_queues); c->rx_queues = NULL; } @@ -1079,13 +1153,13 @@ memif_disconnect_internal (memif_connection_t * c) if (c->regions[0].fd > 0) close (c->regions[0].fd); c->regions[0].fd = -1; - free (c->regions); + lm->free (c->regions); c->regions = NULL; } memset (&c->run_args, 0, sizeof (memif_conn_run_args_t)); - memif_msg_queue_free (&c->msg_queue); + memif_msg_queue_free (lm, &c->msg_queue); if (!(c->args.is_master)) { @@ -1094,7 +1168,7 @@ memif_disconnect_internal (memif_connection_t * c) if (timerfd_settime (lm->timerfd, 0, &lm->arm, NULL) < 0) { err = memif_syscall_error_handler (errno); - DBG_UNIX ("timerfd_settime: arm"); + DBG ("timerfd_settime: arm"); } } lm->disconn_slaves++; @@ -1145,11 +1219,11 @@ memif_delete (memif_conn_handle_t * conn) c->listener_fd); close (c->listener_fd); c->listener_fd = ms->fd = -1; - free (ms->interface_list); + lm->free (ms->interface_list); ms->interface_list = NULL; - free (ms->filename); + lm->free (ms->filename); ms->filename = NULL; - free (ms); + lm->free (ms); ms = NULL; } } @@ -1168,10 +1242,10 @@ memif_delete (memif_conn_handle_t * conn) } if (c->args.socket_filename) - free (c->args.socket_filename); + lm->free (c->args.socket_filename); c->args.socket_filename = NULL; - free (c); + lm->free (c); c = NULL; *conn = c; @@ -1203,8 +1277,8 @@ memif_connect1 (memif_connection_t * c) } num = - (c->args.is_master) ? c->run_args.num_m2s_rings : c-> - run_args.num_s2m_rings; + (c->args.is_master) ? c->run_args.num_m2s_rings : c->run_args. + num_s2m_rings; for (i = 0; i < num; i++) { mq = &c->tx_queues[i]; @@ -1221,8 +1295,8 @@ memif_connect1 (memif_connection_t * c) } } num = - (c->args.is_master) ? c->run_args.num_s2m_rings : c-> - run_args.num_m2s_rings; + (c->args.is_master) ? c->run_args.num_s2m_rings : c->run_args. + num_m2s_rings; for (i = 0; i < num; i++) { mq = &c->rx_queues[i]; @@ -1254,9 +1328,9 @@ memif_init_regions_and_queues (memif_connection_t * conn) libmemif_main_t *lm = &libmemif_main; memif_list_elt_t e; - conn->regions = (memif_region_t *) malloc (sizeof (memif_region_t)); + conn->regions = (memif_region_t *) lm->alloc (sizeof (memif_region_t)); if (conn->regions == NULL) - return memif_syscall_error_handler (errno); + return MEMIF_ERR_NOMEM; r = conn->regions; buffer_offset = @@ -1269,12 +1343,13 @@ memif_init_regions_and_queues (memif_connection_t * conn) conn->run_args.buffer_size * (1 << conn->run_args.log2_ring_size) * (conn->run_args.num_s2m_rings + conn->run_args.num_m2s_rings); - if ((r->fd = memfd_create ("memif region 0", MFD_ALLOW_SEALING)) == -1) + if ((r->fd = + memif_memfd_create ("memif region 0", MFD_ALLOW_SEALING)) == -1) return memif_syscall_error_handler (errno); -/* - if ((fcntl (r->fd, F_ADD_SEALS, F_SEAL_SHRINK)) == -1) - return memif_syscall_error_handler (errno); -*/ + + if ((fcntl (r->fd, F_ADD_SEALS, F_SEAL_SHRINK)) == -1) + return memif_syscall_error_handler (errno); + if ((ftruncate (r->fd, r->region_size)) == -1) return memif_syscall_error_handler (errno); @@ -1295,7 +1370,7 @@ memif_init_regions_and_queues (memif_connection_t * conn) ring->desc[j].region = 0; ring->desc[j].offset = buffer_offset + (uint32_t) (slot * conn->run_args.buffer_size); - ring->desc[j].buffer_length = conn->run_args.buffer_size; + ring->desc[j].length = conn->run_args.buffer_size; } } for (i = 0; i < conn->run_args.num_m2s_rings; i++) @@ -1314,15 +1389,15 @@ memif_init_regions_and_queues (memif_connection_t * conn) ring->desc[j].region = 0; ring->desc[j].offset = buffer_offset + (uint32_t) (slot * conn->run_args.buffer_size); - ring->desc[j].buffer_length = conn->run_args.buffer_size; + ring->desc[j].length = conn->run_args.buffer_size; } } memif_queue_t *mq; mq = - (memif_queue_t *) malloc (sizeof (memif_queue_t) * - conn->run_args.num_s2m_rings); + (memif_queue_t *) lm->alloc (sizeof (memif_queue_t) * + conn->run_args.num_s2m_rings); if (mq == NULL) - return memif_syscall_error_handler (errno); + return MEMIF_ERR_NOMEM; int x; for (x = 0; x < conn->run_args.num_s2m_rings; x++) { @@ -1340,15 +1415,16 @@ memif_init_regions_and_queues (memif_connection_t * conn) mq[x].offset = (void *) mq[x].ring - (void *) conn->regions[mq->region].shm; mq[x].last_head = 0; + mq[x].last_tail = 0; mq[x].alloc_bufs = 0; } conn->tx_queues = mq; mq = - (memif_queue_t *) malloc (sizeof (memif_queue_t) * - conn->run_args.num_m2s_rings); + (memif_queue_t *) lm->alloc (sizeof (memif_queue_t) * + conn->run_args.num_m2s_rings); if (mq == NULL) - return memif_syscall_error_handler (errno); + return MEMIF_ERR_NOMEM; for (x = 0; x < conn->run_args.num_m2s_rings; x++) { if ((mq[x].int_fd = eventfd (0, EFD_NONBLOCK)) < 0) @@ -1365,6 +1441,7 @@ memif_init_regions_and_queues (memif_connection_t * conn) mq[x].offset = (void *) mq[x].ring - (void *) conn->regions[mq->region].shm; mq[x].last_head = 0; + mq[x].last_tail = 0; mq[x].alloc_bufs = 0; } conn->rx_queues = mq; @@ -1378,101 +1455,102 @@ memif_buffer_alloc (memif_conn_handle_t conn, uint16_t qid, uint16_t * count_out, uint16_t size) { memif_connection_t *c = (memif_connection_t *) conn; - if (c == NULL) + if (EXPECT_FALSE (c == NULL)) return MEMIF_ERR_NOCONN; - if (c->fd < 0) + if (EXPECT_FALSE (c->fd < 0)) return MEMIF_ERR_DISCONNECTED; uint8_t num = - (c->args.is_master) ? c->run_args.num_m2s_rings : c-> - run_args.num_s2m_rings; - if (qid >= num) + (c->args.is_master) ? c->run_args.num_m2s_rings : c->run_args. + num_s2m_rings; + if (EXPECT_FALSE (qid >= num)) return MEMIF_ERR_QID; + if (EXPECT_FALSE (!count_out)) + return MEMIF_ERR_INVAL_ARG; + memif_queue_t *mq = &c->tx_queues[qid]; memif_ring_t *ring = mq->ring; memif_buffer_t *b0, *b1; - uint8_t chain_buf = 1; uint16_t mask = (1 << mq->log2_ring_size) - 1; - uint16_t head = ring->head; - uint16_t tail = ring->tail; uint16_t ring_size; - uint16_t s0, s1, ns; - *count_out = 0; + uint16_t slot, ns; int i, err = MEMIF_ERR_SUCCESS; /* 0 */ + uint16_t dst_left, src_left; + uint16_t saved_count; + memif_buffer_t *saved_b; + *count_out = 0; ring_size = (1 << mq->log2_ring_size); - ns = ring_size - head + tail; + ns = ring->tail - mq->last_tail; + mq->last_tail += ns; + slot = (c->args.is_master) ? ring->tail : ring->head; + slot += mq->alloc_bufs; - /* calculate number of chain buffers */ - if (size > ring->desc[0].buffer_length) - { - chain_buf = size / ring->desc[0].buffer_length; - if (((size % ring->desc[0].buffer_length) != 0) || (size == 0)) - chain_buf++; - } + if (c->args.is_master) + ns = ring->head + mq->alloc_bufs - ring->tail; + else + ns = ring_size - ring->head + mq->alloc_bufs + mq->last_tail; while (count && ns) { - while ((count > 2) && (ns > 2)) - { - s0 = (ring->head + mq->alloc_bufs) & mask; - s1 = (ring->head + mq->alloc_bufs + chain_buf) & mask; - - if ((2 * chain_buf) > ns) - break; - - b0 = (bufs + *count_out); - b1 = (bufs + *count_out + 1); - - b0->desc_index = head + mq->alloc_bufs; - b1->desc_index = head + mq->alloc_bufs + chain_buf; - ring->desc[s0].flags = 0; - ring->desc[s1].flags = 0; - b0->buffer_len = ring->desc[s0].buffer_length * chain_buf; - b1->buffer_len = ring->desc[s1].buffer_length * chain_buf; - /* TODO: support multiple regions -> ring descriptor contains region index */ - b0->data = c->regions->shm + ring->desc[s0].offset; - b1->data = c->regions->shm + ring->desc[s1].offset; - - for (i = 0; i < (chain_buf - 1); i++) - { - ring->desc[(s0 + i) & mask].flags |= MEMIF_DESC_FLAG_NEXT; - ring->desc[(s1 + i) & mask].flags |= MEMIF_DESC_FLAG_NEXT; - DBG ("allocating chained buffers"); - } - - mq->alloc_bufs += 2 * chain_buf; - - DBG ("allocated ring slots %u, %u", s0, s1); - count -= 2; - ns -= (2 * chain_buf); - *count_out += 2; - } - s0 = (ring->head + mq->alloc_bufs) & mask; - b0 = (bufs + *count_out); - if (chain_buf > ns) - break; + saved_b = b0; + saved_count = count; + + b0->desc_index = slot; + ring->desc[slot & mask].flags = 0; - b0->desc_index = head + mq->alloc_bufs; - ring->desc[s0].flags = 0; - b0->buffer_len = ring->desc[s0].buffer_length * chain_buf; - b0->data = c->regions->shm + ring->desc[s0].offset; + /* slave can produce buffer with original length */ + dst_left = (c->args.is_master) ? ring->desc[slot & mask].length : c->run_args.buffer_size; /* - headroom */ + src_left = size; - for (i = 0; i < (chain_buf - 1); i++) + while (src_left) { - ring->desc[(s0 + i) & mask].flags |= MEMIF_DESC_FLAG_NEXT; - DBG ("allocating chained buffers"); - } + if (dst_left == 0) + { + if (count && ns) + { + slot++; + *count_out += 1; + mq->alloc_bufs++; + ns--; + count--; + + ring->desc[b0->desc_index & mask].flags |= + MEMIF_DESC_FLAG_NEXT; + b0->flags |= MEMIF_BUFFER_FLAG_NEXT; + + b0 = (bufs + *count_out); + b0->desc_index = slot; + dst_left = (c->args.is_master) ? ring->desc[slot & mask].length : c->run_args.buffer_size; /* - headroom */ + ring->desc[slot & mask].flags = 0; + } + else + { + /* rollback allocated chain buffers */ + memset (saved_b, 0, sizeof (memif_buffer_t) + * (saved_count - count + 1)); + *count_out -= saved_count - count; + mq->alloc_bufs = saved_count - count; + goto no_ns; + } + } + b0->len = memif_min (dst_left, src_left); + b0->data = memif_get_buffer (c, ring, slot & mask); - mq->alloc_bufs += chain_buf; + src_left -= b0->len; + dst_left -= b0->len; + } - DBG ("allocated ring slot %u", s0); - count--; - ns -= chain_buf; + slot++; *count_out += 1; + mq->alloc_bufs++; + ns--; + count--; } +no_ns: + DBG ("allocated: %u/%u bufs. Total %u allocated bufs", *count_out, count, mq->alloc_bufs); @@ -1486,72 +1564,37 @@ memif_buffer_alloc (memif_conn_handle_t conn, uint16_t qid, } int -memif_buffer_free (memif_conn_handle_t conn, uint16_t qid, - memif_buffer_t * bufs, uint16_t count, - uint16_t * count_out) +memif_refill_queue (memif_conn_handle_t conn, uint16_t qid, uint16_t count) { memif_connection_t *c = (memif_connection_t *) conn; - if (c == NULL) + if (EXPECT_FALSE (c == NULL)) return MEMIF_ERR_NOCONN; - if (c->fd < 0) + if (EXPECT_FALSE (c->fd < 0)) return MEMIF_ERR_DISCONNECTED; uint8_t num = - (c->args.is_master) ? c->run_args.num_s2m_rings : c-> - run_args.num_m2s_rings; - if (qid >= num) + (c->args.is_master) ? c->run_args.num_s2m_rings : c->run_args. + num_m2s_rings; + if (EXPECT_FALSE (qid >= num)) return MEMIF_ERR_QID; libmemif_main_t *lm = &libmemif_main; memif_queue_t *mq = &c->rx_queues[qid]; memif_ring_t *ring = mq->ring; - uint16_t tail = ring->tail; - uint16_t mask = (1 << mq->log2_ring_size) - 1; - uint8_t chain_buf0, chain_buf1; - memif_buffer_t *b0, *b1; - *count_out = 0; - if (mq->alloc_bufs < count) - count = mq->alloc_bufs; - - while (count) + if (c->args.is_master) { - while (count > 2) - { - b0 = (bufs + *count_out); - b1 = (bufs + *count_out + 1); - chain_buf0 = - b0->buffer_len / ring->desc[b0->desc_index & mask].buffer_length; - if ((b0->buffer_len % - ring->desc[b0->desc_index & mask].buffer_length) != 0) - chain_buf0++; - chain_buf1 = - b1->buffer_len / ring->desc[b1->desc_index & mask].buffer_length; - if ((b1->buffer_len % - ring->desc[b1->desc_index & mask].buffer_length) != 0) - chain_buf1++; - tail = b1->desc_index + chain_buf1; - b0->data = NULL; - b1->data = NULL; - - count -= 2; - *count_out += 2; - mq->alloc_bufs -= chain_buf0 + chain_buf1; - } - b0 = (bufs + *count_out); - chain_buf0 = - b0->buffer_len / ring->desc[b0->desc_index & mask].buffer_length; - if ((b0->buffer_len % - ring->desc[b0->desc_index & mask].buffer_length) != 0) - chain_buf0++; - tail = b0->desc_index + chain_buf0; - b0->data = NULL; - - count--; - *count_out += 1; - mq->alloc_bufs -= chain_buf0; + MEMIF_MEMORY_BARRIER (); + ring->tail = + (ring->tail + count <= + mq->last_head) ? ring->tail + count : mq->last_head; + } + else + { + uint16_t head = ring->head; + uint16_t ns = (1 << mq->log2_ring_size) - head + mq->last_tail; + head += ns; + MEMIF_MEMORY_BARRIER (); + ring->head = (ring->head + count <= head) ? ring->head + count : head; } - MEMIF_MEMORY_BARRIER (); - ring->tail = tail; - DBG ("tail: %u", ring->tail); return MEMIF_ERR_SUCCESS; /* 0 */ } @@ -1561,212 +1604,48 @@ memif_tx_burst (memif_conn_handle_t conn, uint16_t qid, memif_buffer_t * bufs, uint16_t count, uint16_t * tx) { memif_connection_t *c = (memif_connection_t *) conn; - if (c == NULL) + if (EXPECT_FALSE (c == NULL)) return MEMIF_ERR_NOCONN; - if (c->fd < 0) + if (EXPECT_FALSE (c->fd < 0)) return MEMIF_ERR_DISCONNECTED; uint8_t num = - (c->args.is_master) ? c->run_args.num_m2s_rings : c-> - run_args.num_s2m_rings; - if (qid >= num) + (c->args.is_master) ? c->run_args.num_m2s_rings : c->run_args. + num_s2m_rings; + if (EXPECT_FALSE (qid >= num)) return MEMIF_ERR_QID; + if (EXPECT_FALSE (!tx)) + return MEMIF_ERR_INVAL_ARG; + memif_queue_t *mq = &c->tx_queues[qid]; memif_ring_t *ring = mq->ring; - uint16_t head = ring->head; - uint16_t mask = (1 << mq->log2_ring_size) - 1; - uint8_t chain_buf0, chain_buf1; - *tx = 0; - uint16_t curr_buf = 0; - memif_buffer_t *b0, *b1; - int i; + uint16_t slot; - while (count) - { - while (count > 2) - { - b0 = (bufs + curr_buf); - b1 = (bufs + curr_buf + 1); - chain_buf0 = - b0->buffer_len / ring->desc[b0->desc_index & mask].buffer_length; - if ((b0->buffer_len % - ring->desc[b0->desc_index & mask].buffer_length) != 0) - chain_buf0++; - - chain_buf1 = - b1->buffer_len / ring->desc[b1->desc_index & mask].buffer_length; - if ((b1->buffer_len % - ring->desc[b1->desc_index & mask].buffer_length) != 0) - chain_buf1++; - - for (i = 0; i < memif_min (chain_buf0, chain_buf1); i++) - { - /* b0 */ - if (b0->data_len > - ring->desc[(b0->desc_index + i) & mask].buffer_length) - { - b0->data_len -= - ring->desc[(b0->desc_index + i) & mask].length = - ring->desc[(b0->desc_index + i) & mask].buffer_length; - } - else - { - ring->desc[(b0->desc_index + i) & mask].length = - b0->data_len; - b0->data_len = 0; - } - /* b1 */ - if (b1->data_len > - ring->desc[(b1->desc_index + i) & mask].buffer_length) - { - b1->data_len -= - ring->desc[(b1->desc_index + i) & mask].length = - ring->desc[(b1->desc_index + i) & mask].buffer_length; - } - else - { - ring->desc[(b1->desc_index + i) & mask].length = - b1->data_len; - b1->data_len = 0; - } -#ifdef MEMIF_DBG_SHM - print_bytes (b0->data + - ring->desc[(b0->desc_index + - i) & mask].buffer_length * - (chain_buf0 - 1), - ring->desc[(b0->desc_index + - i) & mask].buffer_length, DBG_TX_BUF); - print_bytes (b1->data + - ring->desc[(b1->desc_index + - i) & mask].buffer_length * - (chain_buf1 - 1), - ring->desc[(b1->desc_index + - i) & mask].buffer_length, DBG_TX_BUF); -#endif /* MEMIF_DBG_SHM */ - } + slot = (c->args.is_master) ? ring->tail : ring->head; + *tx = (count <= mq->alloc_bufs) ? count : mq->alloc_bufs; - if (chain_buf0 > chain_buf1) - { - for (; i < chain_buf0; i++) - { - if (b0->data_len > - ring->desc[(b0->desc_index + i) & mask].buffer_length) - { - b0->data_len -= - ring->desc[(b0->desc_index + i) & mask].length = - ring->desc[(b0->desc_index + i) & mask].buffer_length; - } - else - { - ring->desc[(b0->desc_index + i) & mask].length = - b0->data_len; - b0->data_len = 0; - } -#ifdef MEMIF_DBG_SHM - print_bytes (b0->data + - ring->desc[(b0->desc_index + - i) & mask].buffer_length * - (chain_buf0 - 1), - ring->desc[(b0->desc_index + - i) & mask].buffer_length, - DBG_TX_BUF); -#endif /* MEMIF_DBG_SHM */ - } - } - else - { - for (; i < chain_buf1; i++) - { - if (b1->data_len > - ring->desc[(b1->desc_index + i) & mask].buffer_length) - { - b1->data_len -= - ring->desc[(b1->desc_index + i) & mask].length = - ring->desc[(b1->desc_index + i) & mask].buffer_length; - } - else - { - ring->desc[(b1->desc_index + i) & mask].length = - b1->data_len; - b1->data_len = 0; - } #ifdef MEMIF_DBG_SHM - print_bytes (b1->data + - ring->desc[(b1->desc_index + - i) & mask].buffer_length * - (chain_buf1 - 1), - ring->desc[(b1->desc_index + - i) & mask].buffer_length, - DBG_TX_BUF); -#endif /* MEMIF_DBG_SHM */ - } - } - - head = b1->desc_index + chain_buf1; - - b0->data = NULL; -#ifdef MEMIF_DBG - if (b0->data_len != 0) - DBG ("invalid b0 data length!"); -#endif /* MEMIF_DBG */ - b1->data = NULL; -#ifdef MEMIF_DBG - if (b1->data_len != 0) - DBG ("invalid b1 data length!"); -#endif /* MEMIF_DBG */ - - count -= 2; - *tx += chain_buf0 + chain_buf1; - curr_buf += 2; - } - + uint16_t curr_buf = 0; + uint16_t mask = (1 << mq->log2_ring_size) - 1; + memif_buffer_t *b0; + for (curr_buf = 0; curr_buf < count; curr_buf++) + { b0 = (bufs + curr_buf); - chain_buf0 = - b0->buffer_len / ring->desc[b0->desc_index & mask].buffer_length; - if ((b0->buffer_len % - ring->desc[b0->desc_index & mask].buffer_length) != 0) - chain_buf0++; + print_bytes (memif_get_buffer (c, ring, b0->desc_index & mask), + ring->desc[b0->desc_index & mask].length, DBG_TX_BUF); - for (i = 0; i < chain_buf0; i++) - { - if (b0->data_len > - ring->desc[(b0->desc_index + i) & mask].buffer_length) - { - b0->data_len -= ring->desc[(b0->desc_index + i) & mask].length = - ring->desc[(b0->desc_index + i) & mask].buffer_length; - } - else - { - ring->desc[(b0->desc_index + i) & mask].length = b0->data_len; - b0->data_len = 0; - } -#ifdef MEMIF_DBG_SHM - print_bytes (b0->data + - ring->desc[(b0->desc_index + i) & mask].buffer_length * - (chain_buf0 - 1), - ring->desc[(b0->desc_index + i) & mask].buffer_length, - DBG_TX_BUF); + } #endif /* MEMIF_DBG_SHM */ - } - - head = b0->desc_index + chain_buf0; - b0->data = NULL; -#ifdef MEMIF_DBG - if (b0->data_len != 0) - DBG ("invalid b0 data length!"); -#endif /* MEMIF_DBG */ - - count--; - *tx += chain_buf0; - curr_buf++; - } MEMIF_MEMORY_BARRIER (); - ring->head = head; + if (c->args.is_master) + ring->tail = slot + *tx; + else + ring->head = slot + *tx; - mq->alloc_bufs -= *tx; + /* zero out buffer fields so the client cant modify transmitted data */ + memset (bufs, 0, sizeof (memif_buffer_t) * *tx); - /* TODO: return num of buffers and packets */ - *tx = curr_buf; + mq->alloc_bufs -= *tx; if ((ring->flags & MEMIF_RING_FLAG_MASK_INT) == 0) { @@ -1784,154 +1663,70 @@ memif_rx_burst (memif_conn_handle_t conn, uint16_t qid, memif_buffer_t * bufs, uint16_t count, uint16_t * rx) { memif_connection_t *c = (memif_connection_t *) conn; - if (c == NULL) + if (EXPECT_FALSE (c == NULL)) return MEMIF_ERR_NOCONN; - if (c->fd < 0) + if (EXPECT_FALSE (c->fd < 0)) return MEMIF_ERR_DISCONNECTED; uint8_t num = - (c->args.is_master) ? c->run_args.num_s2m_rings : c-> - run_args.num_m2s_rings; - if (qid >= num) + (c->args.is_master) ? c->run_args.num_s2m_rings : c->run_args. + num_m2s_rings; + if (EXPECT_FALSE (qid >= num)) return MEMIF_ERR_QID; + if (EXPECT_FALSE (!rx)) + return MEMIF_ERR_INVAL_ARG; + memif_queue_t *mq = &c->rx_queues[qid]; memif_ring_t *ring = mq->ring; - uint16_t head = ring->head; + uint16_t cur_slot, last_slot; uint16_t ns; uint16_t mask = (1 << mq->log2_ring_size) - 1; memif_buffer_t *b0, *b1; - uint16_t curr_buf = 0; *rx = 0; -#ifdef MEMIF_DBG_SHM - int i; -#endif /* MEMIF_DBG_SHM */ uint64_t b; ssize_t r = read (mq->int_fd, &b, sizeof (b)); if ((r == -1) && (errno != EAGAIN)) return memif_syscall_error_handler (errno); - if (head == mq->last_head) - return 0; + cur_slot = (c->args.is_master) ? mq->last_head : mq->last_tail; + last_slot = (c->args.is_master) ? ring->head : ring->tail; + if (cur_slot == last_slot) + return MEMIF_ERR_SUCCESS; - ns = head - mq->last_head; + ns = last_slot - cur_slot; while (ns && count) { - while ((ns > 2) && (count > 2)) - { - b0 = (bufs + curr_buf); - b1 = (bufs + curr_buf + 1); - - b0->desc_index = mq->last_head; - b0->data = memif_get_buffer (conn, ring, mq->last_head & mask); - b0->data_len = ring->desc[mq->last_head & mask].length; - b0->buffer_len = ring->desc[mq->last_head & mask].buffer_length; -#ifdef MEMIF_DBG_SHM - i = 0; - print_bytes (b0->data + - ring->desc[b0->desc_index & mask].buffer_length * i++, - ring->desc[b0->desc_index & mask].buffer_length, - DBG_TX_BUF); -#endif /* MEMIF_DBG_SHM */ - ns--; - *rx += 1; - while (ring->desc[mq->last_head & mask]. - flags & MEMIF_DESC_FLAG_NEXT) - { - ring->desc[mq->last_head & mask].flags &= ~MEMIF_DESC_FLAG_NEXT; - mq->last_head++; - b0->data_len += ring->desc[mq->last_head & mask].length; - b0->buffer_len += - ring->desc[mq->last_head & mask].buffer_length; -#ifdef MEMIF_DBG_SHM - print_bytes (b0->data + - ring->desc[b0->desc_index & mask].buffer_length * - i++, - ring->desc[b0->desc_index & mask].buffer_length, - DBG_TX_BUF); -#endif /* MEMIF_DBG_SHM */ - ns--; - *rx += 1; - } - mq->last_head++; - - b1->desc_index = mq->last_head; - b1->data = memif_get_buffer (conn, ring, mq->last_head & mask); - b1->data_len = ring->desc[mq->last_head & mask].length; - b1->buffer_len = ring->desc[mq->last_head & mask].buffer_length; -#ifdef MEMIF_DBG_SHM - i = 0; - print_bytes (b1->data + - ring->desc[b1->desc_index & mask].buffer_length * i++, - ring->desc[b1->desc_index & mask].buffer_length, - DBG_TX_BUF); -#endif /* MEMIF_DBG_SHM */ - ns--; - *rx += 1; - while (ring->desc[mq->last_head & mask]. - flags & MEMIF_DESC_FLAG_NEXT) - { - ring->desc[mq->last_head & mask].flags &= ~MEMIF_DESC_FLAG_NEXT; - mq->last_head++; - b1->data_len += ring->desc[mq->last_head & mask].length; - b1->buffer_len += - ring->desc[mq->last_head & mask].buffer_length; -#ifdef MEMIF_DBG_SHM - print_bytes (b1->data + - ring->desc[b1->desc_index & mask].buffer_length * - i++, - ring->desc[b1->desc_index & mask].buffer_length, - DBG_TX_BUF); -#endif /* MEMIF_DBG_SHM */ - ns--; - *rx += 1; - } - mq->last_head++; + b0 = (bufs + *rx); - count -= 2; - curr_buf += 2; + b0->desc_index = cur_slot; + b0->data = memif_get_buffer (c, ring, cur_slot & mask); + b0->len = ring->desc[cur_slot & mask].length; + /* slave resets buffer length */ + if (c->args.is_master == 0) + { + ring->desc[cur_slot & mask].length = c->run_args.buffer_size; + } + if (ring->desc[cur_slot & mask].flags & MEMIF_DESC_FLAG_NEXT) + { + b0->flags = MEMIF_BUFFER_FLAG_NEXT; + ring->desc[cur_slot & mask].flags &= ~MEMIF_DESC_FLAG_NEXT; } - b0 = (bufs + curr_buf); - b0->desc_index = mq->last_head; - b0->data = memif_get_buffer (conn, ring, mq->last_head & mask); - b0->data_len = ring->desc[mq->last_head & mask].length; - b0->buffer_len = ring->desc[mq->last_head & mask].buffer_length; #ifdef MEMIF_DBG_SHM - i = 0; - print_bytes (b0->data + - ring->desc[b0->desc_index & mask].buffer_length * i++, - ring->desc[b0->desc_index & mask].buffer_length, - DBG_TX_BUF); + print_bytes (b0->data, b0->len, DBG_RX_BUF); #endif /* MEMIF_DBG_SHM */ ns--; *rx += 1; - while (ring->desc[mq->last_head & mask].flags & MEMIF_DESC_FLAG_NEXT) - { - ring->desc[mq->last_head & mask].flags &= ~MEMIF_DESC_FLAG_NEXT; - mq->last_head++; - b0->data_len += ring->desc[mq->last_head & mask].length; - b0->buffer_len += ring->desc[mq->last_head & mask].buffer_length; -#ifdef MEMIF_DBG_SHM - print_bytes (b0->data + - ring->desc[b0->desc_index & mask].buffer_length * i++, - ring->desc[b0->desc_index & mask].buffer_length, - DBG_TX_BUF); -#endif /* MEMIF_DBG_SHM */ - ns--; - *rx += 1; - } - mq->last_head++; - count--; - curr_buf++; + cur_slot++; } - mq->alloc_bufs += *rx; - - /* TODO: return num of buffers and packets */ - *rx = curr_buf; + if (c->args.is_master) + mq->last_head = cur_slot; + else + mq->last_tail = cur_slot; if (ns) { @@ -1946,6 +1741,7 @@ int memif_get_details (memif_conn_handle_t conn, memif_details_t * md, char *buf, ssize_t buflen) { + libmemif_main_t *lm = &libmemif_main; memif_connection_t *c = (memif_connection_t *) conn; if (c == NULL) return MEMIF_ERR_NOCONN; @@ -1963,10 +1759,10 @@ memif_get_details (memif_conn_handle_t conn, memif_details_t * md, else err = MEMIF_ERR_NOBUF_DET; - l1 = strlen ((char *) c->args.instance_name); + l1 = strlen ((char *) lm->app_name); if (l0 + l1 < buflen) { - md->inst_name = strcpy (buf + l0, (char *) c->args.instance_name); + md->inst_name = strcpy (buf + l0, (char *) lm->app_name); l0 += l1 + 1; } else @@ -2018,8 +1814,8 @@ memif_get_details (memif_conn_handle_t conn, memif_details_t * md, err = MEMIF_ERR_NOBUF_DET; md->rx_queues_num = - (c->args.is_master) ? c->run_args.num_s2m_rings : c-> - run_args.num_m2s_rings; + (c->args.is_master) ? c->run_args.num_s2m_rings : c->run_args. + num_m2s_rings; l1 = sizeof (memif_queue_details_t) * md->rx_queues_num; if (l0 + l1 <= buflen) @@ -2041,8 +1837,8 @@ memif_get_details (memif_conn_handle_t conn, memif_details_t * md, } md->tx_queues_num = - (c->args.is_master) ? c->run_args.num_m2s_rings : c-> - run_args.num_s2m_rings; + (c->args.is_master) ? c->run_args.num_m2s_rings : c->run_args. + num_s2m_rings; l1 = sizeof (memif_queue_details_t) * md->tx_queues_num; if (l0 + l1 <= buflen) @@ -2078,8 +1874,8 @@ memif_get_queue_efd (memif_conn_handle_t conn, uint16_t qid, int *efd) if (c->fd < 0) return MEMIF_ERR_DISCONNECTED; uint8_t num = - (c->args.is_master) ? c->run_args.num_s2m_rings : c-> - run_args.num_m2s_rings; + (c->args.is_master) ? c->run_args.num_s2m_rings : c->run_args. + num_m2s_rings; if (qid >= num) return MEMIF_ERR_QID; @@ -2093,16 +1889,16 @@ memif_cleanup () { libmemif_main_t *lm = &libmemif_main; if (lm->control_list) - free (lm->control_list); + lm->free (lm->control_list); lm->control_list = NULL; if (lm->interrupt_list) - free (lm->interrupt_list); + lm->free (lm->interrupt_list); lm->interrupt_list = NULL; if (lm->listener_list) - free (lm->listener_list); + lm->free (lm->listener_list); lm->listener_list = NULL; if (lm->pending_list) - free (lm->pending_list); + lm->free (lm->pending_list); lm->pending_list = NULL; if (poll_cancel_fd != -1) close (poll_cancel_fd); |