X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=lib%2Flibrte_eal%2Flinuxapp%2Feal%2Feal_interrupts.c;h=c54b8823df71c79697725c2bc3a9883e18d5a38c;hb=597cb1874068054d4c0be41f161a72ef37888930;hp=2e3bd12a43c9c101a9b823f451d94dbfb71d6f24;hpb=7595afa4d30097c1177b69257118d8ad89a539be;p=deb_dpdk.git

diff --git a/lib/librte_eal/linuxapp/eal/eal_interrupts.c b/lib/librte_eal/linuxapp/eal/eal_interrupts.c
index 2e3bd12a..c54b8823 100644
--- a/lib/librte_eal/linuxapp/eal/eal_interrupts.c
+++ b/lib/librte_eal/linuxapp/eal/eal_interrupts.c
@@ -51,7 +51,6 @@
 #include <rte_common.h>
 #include <rte_interrupts.h>
 #include <rte_memory.h>
-#include <rte_memzone.h>
 #include <rte_launch.h>
 #include <rte_eal.h>
 #include <rte_per_lcore.h>
@@ -60,10 +59,10 @@
 #include <rte_branch_prediction.h>
 #include <rte_debug.h>
 #include <rte_log.h>
-#include <rte_pci.h>
 #include <rte_malloc.h>
 #include <rte_errno.h>
 #include <rte_spinlock.h>
+#include <rte_pause.h>
 
 #include "eal_private.h"
 #include "eal_vfio.h"
@@ -450,7 +449,7 @@ rte_intr_callback_register(const struct rte_intr_handle *intr_handle,
 	TAILQ_FOREACH(src, &intr_sources, next) {
 		if (src->intr_handle.fd == intr_handle->fd) {
 			/* we had no interrupts for this */
-			if TAILQ_EMPTY(&src->callbacks)
+			if (TAILQ_EMPTY(&src->callbacks))
 				wake_thread = 1;
 
 			TAILQ_INSERT_TAIL(&(src->callbacks), callback, next);
@@ -653,7 +652,7 @@ eal_intr_process_interrupts(struct epoll_event *events, int nfds)
 	bool call = false;
 	int n, bytes_read;
 	struct rte_intr_source *src;
-	struct rte_intr_callback *cb;
+	struct rte_intr_callback *cb, *next;
 	union rte_intr_read_buffer buf;
 	struct rte_intr_callback active_cb;
 
@@ -724,6 +723,23 @@ eal_intr_process_interrupts(struct epoll_event *events, int nfds)
 					"descriptor %d: %s\n",
 					events[n].data.fd,
 					strerror(errno));
+				/*
+				 * The device is unplugged or buggy, remove
+				 * it as an interrupt source and return to
+				 * force the wait list to be rebuilt.
+				 */
+				rte_spinlock_lock(&intr_lock);
+				TAILQ_REMOVE(&intr_sources, src, next);
+				rte_spinlock_unlock(&intr_lock);
+
+				for (cb = TAILQ_FIRST(&src->callbacks); cb;
+							cb = next) {
+					next = TAILQ_NEXT(cb, next);
+					TAILQ_REMOVE(&src->callbacks, cb, next);
+					free(cb);
+				}
+				free(src);
+				return -1;
 			} else if (bytes_read == 0)
 				RTE_LOG(ERR, EAL, "Read nothing from file "
 					"descriptor %d\n", events[n].data.fd);
@@ -913,7 +929,7 @@ static void
 eal_intr_proc_rxtx_intr(int fd, const struct rte_intr_handle *intr_handle)
 {
 	union rte_intr_read_buffer buf;
-	int bytes_read = 1;
+	int bytes_read = 0;
 	int nbytes;
 
 	switch (intr_handle->type) {
@@ -929,11 +945,9 @@ eal_intr_proc_rxtx_intr(int fd, const struct rte_intr_handle *intr_handle)
 		break;
 #endif
 	case RTE_INTR_HANDLE_VDEV:
-		/* for vdev, fd points to:
-		 * a. eventfd which does not need to read out;
-		 * b. datapath fd which needs PMD to read out.
-		 */
-		return;
+		bytes_read = intr_handle->efd_counter_size;
+		/* For vdev, number of bytes to read is set by driver */
+		break;
 	case RTE_INTR_HANDLE_EXT:
 		return;
 	default:
@@ -946,6 +960,8 @@ eal_intr_proc_rxtx_intr(int fd, const struct rte_intr_handle *intr_handle)
 	 * read out to clear the ready-to-be-read flag
 	 * for epoll_wait.
 	 */
+	if (bytes_read == 0)
+		return;
 	do {
 		nbytes = read(fd, &buf, bytes_read);
 		if (nbytes < 0) {
@@ -1205,7 +1221,12 @@ rte_intr_efd_enable(struct rte_intr_handle *intr_handle, uint32_t nb_efd)
 		intr_handle->nb_efd   = n;
 		intr_handle->max_intr = NB_OTHER_INTR + n;
 	} else if (intr_handle->type == RTE_INTR_HANDLE_VDEV) {
-		/* do nothing, and let vdev driver to initialize this struct */
+		/* only check, initialization would be done in vdev driver.*/
+		if (intr_handle->efd_counter_size >
+		    sizeof(union rte_intr_read_buffer)) {
+			RTE_LOG(ERR, EAL, "the efd_counter_size is oversized");
+			return -EINVAL;
+		}
 	} else {
 		intr_handle->efds[0]  = intr_handle->fd;
 		intr_handle->nb_efd   = RTE_MIN(nb_efd, 1U);