From: Raslan Darawsheh Date: Thu, 18 Oct 2018 10:17:28 +0000 (+0300) Subject: net/tap: move fds of queues to be in process private X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=ed8132e7c91202abfeccc2f9e39c334df2f5db69;p=dpdk.git net/tap: move fds of queues to be in process private fd's cannot be shared between processes, and each process need to have it's own fd's pointer. Signed-off-by: Raslan Darawsheh Reviewed-by: Ferruh Yigit --- diff --git a/drivers/net/tap/rte_eth_tap.c b/drivers/net/tap/rte_eth_tap.c index 4d1ac23afd..4fb30e2530 100644 --- a/drivers/net/tap/rte_eth_tap.c +++ b/drivers/net/tap/rte_eth_tap.c @@ -315,6 +315,7 @@ static uint16_t pmd_rx_burst(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts) { struct rx_queue *rxq = queue; + struct pmd_process_private *process_private; uint16_t num_rx; unsigned long num_rx_bytes = 0; uint32_t trigger = tap_trigger; @@ -323,6 +324,7 @@ pmd_rx_burst(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts) return 0; if (trigger) rxq->trigger_seen = trigger; + process_private = rte_eth_devices[rxq->in_port].process_private; rte_compiler_barrier(); for (num_rx = 0; num_rx < nb_pkts; ) { struct rte_mbuf *mbuf = rxq->pool; @@ -331,9 +333,9 @@ pmd_rx_burst(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts) uint16_t data_off = rte_pktmbuf_headroom(mbuf); int len; - len = readv(rxq->fd, *rxq->iovecs, - 1 + - (rxq->rxmode->offloads & DEV_RX_OFFLOAD_SCATTER ? + len = readv(process_private->rxq_fds[rxq->queue_id], + *rxq->iovecs, + 1 + (rxq->rxmode->offloads & DEV_RX_OFFLOAD_SCATTER ? rxq->nb_rx_desc : 1)); if (len < (int)sizeof(struct tun_pi)) break; @@ -494,6 +496,9 @@ tap_write_mbufs(struct tx_queue *txq, uint16_t num_mbufs, { int i; uint16_t l234_hlen; + struct pmd_process_private *process_private; + + process_private = rte_eth_devices[txq->out_port].process_private; for (i = 0; i < num_mbufs; i++) { struct rte_mbuf *mbuf = pmbufs[i]; @@ -595,7 +600,7 @@ tap_write_mbufs(struct tx_queue *txq, uint16_t num_mbufs, tap_tx_l4_cksum(l4_cksum, l4_phdr_cksum, l4_raw_cksum); /* copy the tx frame data */ - n = writev(txq->fd, iovecs, j); + n = writev(process_private->txq_fds[txq->queue_id], iovecs, j); if (n <= 0) break; (*num_packets)++; @@ -970,19 +975,20 @@ tap_dev_close(struct rte_eth_dev *dev) { int i; struct pmd_internals *internals = dev->data->dev_private; + struct pmd_process_private *process_private = dev->process_private; tap_link_set_down(dev); tap_flow_flush(dev, NULL); tap_flow_implicit_flush(internals, NULL); for (i = 0; i < RTE_PMD_TAP_MAX_QUEUES; i++) { - if (internals->rxq[i].fd != -1) { - close(internals->rxq[i].fd); - internals->rxq[i].fd = -1; + if (process_private->rxq_fds[i] != -1) { + close(process_private->rxq_fds[i]); + process_private->rxq_fds[i] = -1; } - if (internals->txq[i].fd != -1) { - close(internals->txq[i].fd); - internals->txq[i].fd = -1; + if (process_private->txq_fds[i] != -1) { + close(process_private->txq_fds[i]); + process_private->txq_fds[i] = -1; } } @@ -1006,10 +1012,14 @@ static void tap_rx_queue_release(void *queue) { struct rx_queue *rxq = queue; + struct pmd_process_private *process_private; - if (rxq && (rxq->fd > 0)) { - close(rxq->fd); - rxq->fd = -1; + if (!rxq) + return; + process_private = rte_eth_devices[rxq->in_port].process_private; + if (process_private->rxq_fds[rxq->queue_id] > 0) { + close(process_private->rxq_fds[rxq->queue_id]); + process_private->rxq_fds[rxq->queue_id] = -1; rte_pktmbuf_free(rxq->pool); rte_free(rxq->iovecs); rxq->pool = NULL; @@ -1021,10 +1031,15 @@ static void tap_tx_queue_release(void *queue) { struct tx_queue *txq = queue; + struct pmd_process_private *process_private; + + if (!txq) + return; + process_private = rte_eth_devices[txq->out_port].process_private; - if (txq && (txq->fd > 0)) { - close(txq->fd); - txq->fd = -1; + if (process_private->txq_fds[txq->queue_id] > 0) { + close(process_private->txq_fds[txq->queue_id]); + process_private->txq_fds[txq->queue_id] = -1; } } @@ -1209,18 +1224,19 @@ tap_setup_queue(struct rte_eth_dev *dev, int *other_fd; const char *dir; struct pmd_internals *pmd = dev->data->dev_private; + struct pmd_process_private *process_private = dev->process_private; struct rx_queue *rx = &internals->rxq[qid]; struct tx_queue *tx = &internals->txq[qid]; struct rte_gso_ctx *gso_ctx; if (is_rx) { - fd = &rx->fd; - other_fd = &tx->fd; + fd = &process_private->rxq_fds[qid]; + other_fd = &process_private->txq_fds[qid]; dir = "rx"; gso_ctx = NULL; } else { - fd = &tx->fd; - other_fd = &rx->fd; + fd = &process_private->txq_fds[qid]; + other_fd = &process_private->rxq_fds[qid]; dir = "tx"; gso_ctx = &tx->gso_ctx; } @@ -1273,6 +1289,7 @@ tap_rx_queue_setup(struct rte_eth_dev *dev, struct rte_mempool *mp) { struct pmd_internals *internals = dev->data->dev_private; + struct pmd_process_private *process_private = dev->process_private; struct rx_queue *rxq = &internals->rxq[rx_queue_id]; struct rte_mbuf **tmp = &rxq->pool; long iov_max = sysconf(_SC_IOV_MAX); @@ -1332,7 +1349,8 @@ tap_rx_queue_setup(struct rte_eth_dev *dev, } TAP_LOG(DEBUG, " RX TUNTAP device name %s, qid %d on fd %d", - internals->name, rx_queue_id, internals->rxq[rx_queue_id].fd); + internals->name, rx_queue_id, + process_private->rxq_fds[rx_queue_id]); return 0; @@ -1352,6 +1370,7 @@ tap_tx_queue_setup(struct rte_eth_dev *dev, const struct rte_eth_txconf *tx_conf) { struct pmd_internals *internals = dev->data->dev_private; + struct pmd_process_private *process_private = dev->process_private; struct tx_queue *txq; int ret; uint64_t offloads; @@ -1374,7 +1393,8 @@ tap_tx_queue_setup(struct rte_eth_dev *dev, return -1; TAP_LOG(DEBUG, " TX TUNTAP device name %s, qid %d on fd %d csum %s", - internals->name, tx_queue_id, internals->txq[tx_queue_id].fd, + internals->name, tx_queue_id, + process_private->txq_fds[tx_queue_id], txq->csum ? "on" : "off"); return 0; @@ -1622,6 +1642,7 @@ eth_dev_tap_create(struct rte_vdev_device *vdev, char *tap_name, int numa_node = rte_socket_id(); struct rte_eth_dev *dev; struct pmd_internals *pmd; + struct pmd_process_private *process_private; struct rte_eth_dev_data *data; struct ifreq ifr; int i; @@ -1636,7 +1657,16 @@ eth_dev_tap_create(struct rte_vdev_device *vdev, char *tap_name, goto error_exit_nodev; } + process_private = (struct pmd_process_private *) + rte_zmalloc_socket(tap_name, sizeof(struct pmd_process_private), + RTE_CACHE_LINE_SIZE, dev->device->numa_node); + + if (process_private == NULL) { + TAP_LOG(ERR, "Failed to alloc memory for process private"); + return -1; + } pmd = dev->data->dev_private; + dev->process_private = process_private; pmd->dev = dev; snprintf(pmd->name, sizeof(pmd->name), "%s", tap_name); pmd->type = type; @@ -1672,8 +1702,8 @@ eth_dev_tap_create(struct rte_vdev_device *vdev, char *tap_name, /* Presetup the fds to -1 as being not valid */ pmd->ka_fd = -1; for (i = 0; i < RTE_PMD_TAP_MAX_QUEUES; i++) { - pmd->rxq[i].fd = -1; - pmd->txq[i].fd = -1; + process_private->rxq_fds[i] = -1; + process_private->txq_fds[i] = -1; } if (pmd->type == ETH_TUNTAP_TYPE_TAP) { @@ -2072,6 +2102,7 @@ rte_pmd_tap_remove(struct rte_vdev_device *dev) { struct rte_eth_dev *eth_dev = NULL; struct pmd_internals *internals; + struct pmd_process_private *process_private; int i; /* find the ethdev entry */ @@ -2083,6 +2114,7 @@ rte_pmd_tap_remove(struct rte_vdev_device *dev) return rte_eth_dev_release_port_secondary(eth_dev); internals = eth_dev->data->dev_private; + process_private = eth_dev->process_private; TAP_LOG(DEBUG, "Closing %s Ethernet device on numa %u", (internals->type == ETH_TUNTAP_TYPE_TAP) ? "TAP" : "TUN", @@ -2094,18 +2126,19 @@ rte_pmd_tap_remove(struct rte_vdev_device *dev) tap_nl_final(internals->nlsk_fd); } for (i = 0; i < RTE_PMD_TAP_MAX_QUEUES; i++) { - if (internals->rxq[i].fd != -1) { - close(internals->rxq[i].fd); - internals->rxq[i].fd = -1; + if (process_private->rxq_fds[i] != -1) { + close(process_private->rxq_fds[i]); + process_private->rxq_fds[i] = -1; } - if (internals->txq[i].fd != -1) { - close(internals->txq[i].fd); - internals->txq[i].fd = -1; + if (process_private->txq_fds[i] != -1) { + close(process_private->txq_fds[i]); + process_private->txq_fds[i] = -1; } } close(internals->ioctl_sock); rte_free(eth_dev->data->dev_private); + rte_free(eth_dev->process_private); rte_eth_dev_release_port(eth_dev); if (internals->ka_fd != -1) { diff --git a/drivers/net/tap/rte_eth_tap.h b/drivers/net/tap/rte_eth_tap.h index 4502e24d3e..dc3579ac0d 100644 --- a/drivers/net/tap/rte_eth_tap.h +++ b/drivers/net/tap/rte_eth_tap.h @@ -47,7 +47,6 @@ struct rx_queue { uint32_t trigger_seen; /* Last seen Rx trigger value */ uint16_t in_port; /* Port ID */ uint16_t queue_id; /* queue ID*/ - int fd; struct pkt_stats stats; /* Stats for this RX queue */ uint16_t nb_rx_desc; /* max number of mbufs available */ struct rte_eth_rxmode *rxmode; /* RX features */ @@ -57,7 +56,6 @@ struct rx_queue { }; struct tx_queue { - int fd; int type; /* Type field - TUN|TAP */ uint16_t *mtu; /* Pointer to MTU from dev_data */ uint16_t csum:1; /* Enable checksum offloading */ @@ -95,6 +93,11 @@ struct pmd_internals { int ka_fd; /* keep-alive file descriptor */ }; +struct pmd_process_private { + int rxq_fds[RTE_PMD_TAP_MAX_QUEUES]; + int txq_fds[RTE_PMD_TAP_MAX_QUEUES]; +}; + /* tap_intr.c */ int tap_rx_intr_vec_set(struct rte_eth_dev *dev, int set); diff --git a/drivers/net/tap/tap_flow.c b/drivers/net/tap/tap_flow.c index 0e01af62ac..3ba69451a8 100644 --- a/drivers/net/tap/tap_flow.c +++ b/drivers/net/tap/tap_flow.c @@ -1567,6 +1567,7 @@ tap_flow_isolate(struct rte_eth_dev *dev, struct rte_flow_error *error __rte_unused) { struct pmd_internals *pmd = dev->data->dev_private; + struct pmd_process_private *process_private = dev->process_private; /* normalize 'set' variable to contain 0 or 1 values */ if (set) @@ -1580,7 +1581,7 @@ tap_flow_isolate(struct rte_eth_dev *dev, * If netdevice is there, setup appropriate flow rules immediately. * Otherwise it will be set when bringing up the netdevice (tun_alloc). */ - if (!pmd->rxq[0].fd) + if (!process_private->rxq_fds[0]) return 0; if (set) { struct rte_flow *remote_flow; diff --git a/drivers/net/tap/tap_intr.c b/drivers/net/tap/tap_intr.c index fc590181fc..7af0010e37 100644 --- a/drivers/net/tap/tap_intr.c +++ b/drivers/net/tap/tap_intr.c @@ -51,6 +51,7 @@ static int tap_rx_intr_vec_install(struct rte_eth_dev *dev) { struct pmd_internals *pmd = dev->data->dev_private; + struct pmd_process_private *process_private = dev->process_private; unsigned int rxqs_n = pmd->dev->data->nb_rx_queues; struct rte_intr_handle *intr_handle = &pmd->intr_handle; unsigned int n = RTE_MIN(rxqs_n, (uint32_t)RTE_MAX_RXTX_INTR_VEC_ID); @@ -71,7 +72,7 @@ tap_rx_intr_vec_install(struct rte_eth_dev *dev) struct rx_queue *rxq = pmd->dev->data->rx_queues[i]; /* Skip queues that cannot request interrupts. */ - if (!rxq || rxq->fd <= 0) { + if (!rxq || process_private->rxq_fds[i] <= 0) { /* Use invalid intr_vec[] index to disable entry. */ intr_handle->intr_vec[i] = RTE_INTR_VEC_RXTX_OFFSET + @@ -79,7 +80,7 @@ tap_rx_intr_vec_install(struct rte_eth_dev *dev) continue; } intr_handle->intr_vec[i] = RTE_INTR_VEC_RXTX_OFFSET + count; - intr_handle->efds[count] = rxq->fd; + intr_handle->efds[count] = process_private->rxq_fds[i]; count++; } if (!count)