X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=drivers%2Fnet%2Ftap%2Frte_eth_tap.c;h=7081ae23e9ea33403dd24f031a2b83289590ce5a;hb=39395b9d41aff5488db4924df94098abbe4d4e8c;hp=9c88b9268e988aed326e4529bacba97db027c5a8;hpb=710aa4279097e9ee5a131b7e0732e5a8ef8bcfc1;p=dpdk.git

diff --git a/drivers/net/tap/rte_eth_tap.c b/drivers/net/tap/rte_eth_tap.c
index 9c88b9268e..7081ae23e9 100644
--- a/drivers/net/tap/rte_eth_tap.c
+++ b/drivers/net/tap/rte_eth_tap.c
@@ -18,6 +18,7 @@
 #include <rte_string_fns.h>
 #include <rte_ethdev.h>
 #include <rte_errno.h>
+#include <rte_cycles.h>
 
 #include <sys/types.h>
 #include <sys/stat.h>
@@ -338,6 +339,23 @@ tap_rx_offload_get_queue_capa(void)
 	       DEV_RX_OFFLOAD_TCP_CKSUM;
 }
 
+static void
+tap_rxq_pool_free(struct rte_mbuf *pool)
+{
+	struct rte_mbuf *mbuf = pool;
+	uint16_t nb_segs = 1;
+
+	if (mbuf == NULL)
+		return;
+
+	while (mbuf->next) {
+		mbuf = mbuf->next;
+		nb_segs++;
+	}
+	pool->nb_segs = nb_segs;
+	rte_pktmbuf_free(pool);
+}
+
 /* Callback to handle the rx burst of packets to the correct interface and
  * file descriptor(s) in a multi-queue setup.
  */
@@ -388,7 +406,7 @@ pmd_rx_burst(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
 					goto end;
 
 				seg->next = NULL;
-				rte_pktmbuf_free(mbuf);
+				tap_rxq_pool_free(mbuf);
 
 				goto end;
 			}
@@ -1035,7 +1053,7 @@ tap_dev_close(struct rte_eth_dev *dev)
 			rxq = &internals->rxq[i];
 			close(process_private->rxq_fds[i]);
 			process_private->rxq_fds[i] = -1;
-			rte_pktmbuf_free(rxq->pool);
+			tap_rxq_pool_free(rxq->pool);
 			rte_free(rxq->iovecs);
 			rxq->pool = NULL;
 			rxq->iovecs = NULL;
@@ -1071,10 +1089,10 @@ tap_rx_queue_release(void *queue)
 	if (!rxq)
 		return;
 	process_private = rte_eth_devices[rxq->in_port].process_private;
-	if (process_private->rxq_fds[rxq->queue_id] > 0) {
+	if (process_private->rxq_fds[rxq->queue_id] != -1) {
 		close(process_private->rxq_fds[rxq->queue_id]);
 		process_private->rxq_fds[rxq->queue_id] = -1;
-		rte_pktmbuf_free(rxq->pool);
+		tap_rxq_pool_free(rxq->pool);
 		rte_free(rxq->iovecs);
 		rxq->pool = NULL;
 		rxq->iovecs = NULL;
@@ -1091,7 +1109,7 @@ tap_tx_queue_release(void *queue)
 		return;
 	process_private = rte_eth_devices[txq->out_port].process_private;
 
-	if (process_private->txq_fds[txq->queue_id] > 0) {
+	if (process_private->txq_fds[txq->queue_id] != -1) {
 		close(process_private->txq_fds[txq->queue_id]);
 		process_private->txq_fds[txq->queue_id] = -1;
 	}
@@ -1484,7 +1502,7 @@ tap_rx_queue_setup(struct rte_eth_dev *dev,
 	return 0;
 
 error:
-	rte_pktmbuf_free(rxq->pool);
+	tap_rxq_pool_free(rxq->pool);
 	rxq->pool = NULL;
 	rte_free(rxq->iovecs);
 	rxq->iovecs = NULL;
@@ -1582,13 +1600,12 @@ static int
 tap_lsc_intr_handle_set(struct rte_eth_dev *dev, int set)
 {
 	struct pmd_internals *pmd = dev->data->dev_private;
+	int ret;
 
 	/* In any case, disable interrupt if the conf is no longer there. */
 	if (!dev->data->dev_conf.intr_conf.lsc) {
 		if (pmd->intr_handle.fd != -1) {
-			tap_nl_final(pmd->intr_handle.fd);
-			rte_intr_callback_unregister(&pmd->intr_handle,
-				tap_dev_intr_handler, dev);
+			goto clean;
 		}
 		return 0;
 	}
@@ -1599,9 +1616,26 @@ tap_lsc_intr_handle_set(struct rte_eth_dev *dev, int set)
 		return rte_intr_callback_register(
 			&pmd->intr_handle, tap_dev_intr_handler, dev);
 	}
+
+clean:
+	do {
+		ret = rte_intr_callback_unregister(&pmd->intr_handle,
+			tap_dev_intr_handler, dev);
+		if (ret >= 0) {
+			break;
+		} else if (ret == -EAGAIN) {
+			rte_delay_ms(100);
+		} else {
+			TAP_LOG(ERR, "intr callback unregister failed: %d",
+				     ret);
+			break;
+		}
+	} while (true);
+
 	tap_nl_final(pmd->intr_handle.fd);
-	return rte_intr_callback_unregister(&pmd->intr_handle,
-					    tap_dev_intr_handler, dev);
+	pmd->intr_handle.fd = -1;
+
+	return 0;
 }
 
 static int
@@ -1806,6 +1840,8 @@ eth_dev_tap_create(struct rte_vdev_device *vdev, const char *tap_name,
 	pmd->dev = dev;
 	strlcpy(pmd->name, tap_name, sizeof(pmd->name));
 	pmd->type = type;
+	pmd->ka_fd = -1;
+	pmd->nlsk_fd = -1;
 
 	pmd->ioctl_sock = socket(AF_INET, SOCK_DGRAM, 0);
 	if (pmd->ioctl_sock == -1) {
@@ -1836,7 +1872,6 @@ eth_dev_tap_create(struct rte_vdev_device *vdev, const char *tap_name,
 	dev->intr_handle = &pmd->intr_handle;
 
 	/* Presetup the fds to -1 as being not valid */
-	pmd->ka_fd = -1;
 	for (i = 0; i < RTE_PMD_TAP_MAX_QUEUES; i++) {
 		process_private->rxq_fds[i] = -1;
 		process_private->txq_fds[i] = -1;
@@ -1976,7 +2011,11 @@ error_remote:
 	tap_flow_implicit_flush(pmd, NULL);
 
 error_exit:
-	if (pmd->ioctl_sock > 0)
+	if (pmd->nlsk_fd != -1)
+		close(pmd->nlsk_fd);
+	if (pmd->ka_fd != -1)
+		close(pmd->ka_fd);
+	if (pmd->ioctl_sock != -1)
 		close(pmd->ioctl_sock);
 	/* mac_addrs must not be freed alone because part of dev_private */
 	dev->data->mac_addrs = NULL;
@@ -2433,10 +2472,6 @@ rte_pmd_tap_remove(struct rte_vdev_device *dev)
 	tap_devices_count--;
 	rte_eth_dev_release_port(eth_dev);
 
-	if (internals->ka_fd != -1) {
-		close(internals->ka_fd);
-		internals->ka_fd = -1;
-	}
 	return 0;
 }