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From: Tetsuya Mukawa <mukawa@igel.co.jp>
To: dev@dpdk.org
Subject: [dpdk-dev] [PATCH v2 6/6] eal: Fix interface of pci_map_resource()
Date: Tue, 24 Mar 2015 13:18:37 +0900
Message-ID: <1427170717-13879-7-git-send-email-mukawa@igel.co.jp> (raw)
In-Reply-To: <1427170717-13879-1-git-send-email-mukawa@igel.co.jp>

The function is implemented in both linuxapp and bsdapp, but interface
is different. The patch fixes the function of bsdapp to do same as
linuxapp. After applying it, file descriptor should be opened and
closed out of pci_map_resource().
Also, remove redundant error messages from linuxapp.

Signed-off-by: Tetsuya Mukawa <mukawa@igel.co.jp>
---
 lib/librte_eal/bsdapp/eal/eal_pci.c       | 111 ++++++++++++++++++------------
 lib/librte_eal/linuxapp/eal/eal_pci_uio.c |  21 +++---
 2 files changed, 77 insertions(+), 55 deletions(-)

diff --git a/lib/librte_eal/bsdapp/eal/eal_pci.c b/lib/librte_eal/bsdapp/eal/eal_pci.c
index 08b91b4..d83916b 100644
--- a/lib/librte_eal/bsdapp/eal/eal_pci.c
+++ b/lib/librte_eal/bsdapp/eal/eal_pci.c
@@ -100,7 +100,7 @@ struct mapped_pci_resource {
 
 	struct rte_pci_addr pci_addr;
 	char path[PATH_MAX];
-	size_t nb_maps;
+	int nb_maps;
 	struct pci_map maps[PCI_MAX_RESOURCE];
 };
 
@@ -122,47 +122,30 @@ pci_unbind_kernel_driver(struct rte_pci_device *dev __rte_unused)
 
 /* map a particular resource from a file */
 static void *
-pci_map_resource(void *requested_addr, const char *devname, off_t offset,
-		 size_t size)
+pci_map_resource(void *requested_addr, int fd, off_t offset, size_t size,
+		 int additional_flags)
 {
-	int fd;
 	void *mapaddr;
 
-	/*
-	 * open devname, to mmap it
-	 */
-	fd = open(devname, O_RDWR);
-	if (fd < 0) {
-		RTE_LOG(ERR, EAL, "Cannot open %s: %s\n",
-			devname, strerror(errno));
-		goto fail;
-	}
-
 	/* Map the PCI memory resource of device */
 	mapaddr = mmap(requested_addr, size, PROT_READ | PROT_WRITE,
-			MAP_SHARED, fd, offset);
-	close(fd);
-	if (mapaddr == MAP_FAILED ||
-			(requested_addr != NULL && mapaddr != requested_addr)) {
-		RTE_LOG(ERR, EAL, "%s(): cannot mmap(%s(%d), %p, 0x%lx, 0x%lx):"
-			" %s (%p)\n", __func__, devname, fd, requested_addr,
+			MAP_SHARED | additional_flags, fd, offset);
+	if (mapaddr == MAP_FAILED) {
+		RTE_LOG(ERR, EAL,
+			"%s(): cannot mmap(%d, %p, 0x%lx, 0x%lx): %s (%p)\n",
+			__func__, fd, requested_addr,
 			(unsigned long)size, (unsigned long)offset,
 			strerror(errno), mapaddr);
-		goto fail;
-	}
-
-	RTE_LOG(DEBUG, EAL, "  PCI memory mapped at %p\n", mapaddr);
+	} else
+		RTE_LOG(DEBUG, EAL, "  PCI memory mapped at %p\n", mapaddr);
 
 	return mapaddr;
-
-fail:
-	return NULL;
 }
 
 static int
 pci_uio_map_secondary(struct rte_pci_device *dev)
 {
-	size_t i;
+	int i, fd;
 	struct mapped_pci_resource *uio_res;
 	struct mapped_pci_res_list *uio_res_list =
 			RTE_TAILQ_CAST(rte_uio_tailq.head, mapped_pci_res_list);
@@ -170,19 +153,34 @@ pci_uio_map_secondary(struct rte_pci_device *dev)
 	TAILQ_FOREACH(uio_res, uio_res_list, next) {
 
 		/* skip this element if it doesn't match our PCI address */
-		if (memcmp(&uio_res->pci_addr, &dev->addr, sizeof(dev->addr)))
+		if (rte_eal_compare_pci_addr(&uio_res->pci_addr, &dev->addr))
 			continue;
 
 		for (i = 0; i != uio_res->nb_maps; i++) {
-			if (pci_map_resource(uio_res->maps[i].addr,
-					     uio_res->path,
-					     (off_t)uio_res->maps[i].offset,
-					     (size_t)uio_res->maps[i].size)
-			    != uio_res->maps[i].addr) {
+			/*
+			 * open devname, to mmap it
+			 */
+			fd = open(uio_res->maps[i].path, O_RDWR);
+			if (fd < 0) {
+				RTE_LOG(ERR, EAL, "Cannot open %s: %s\n",
+					uio_res->maps[i].path, strerror(errno));
+				return -1;
+			}
+
+			void *mapaddr = pci_map_resource(uio_res->maps[i].addr,
+					fd, (off_t)uio_res->maps[i].offset,
+					(size_t)uio_res->maps[i].size, 0);
+			if (mapaddr != uio_res->maps[i].addr) {
 				RTE_LOG(ERR, EAL,
-					"Cannot mmap device resource\n");
+						"Cannot mmap device resource "
+						"file %s to address: %p\n",
+						uio_res->maps[i].path,
+						uio_res->maps[i].addr);
+				close(fd);
 				return -1;
 			}
+			/* fd is not needed in slave process, close it */
+			close(fd);
 		}
 		return 0;
 	}
@@ -248,24 +246,43 @@ pci_uio_map_resource(struct rte_pci_device *dev)
 
 	maps = uio_res->maps;
 	for (i = 0, map_idx = 0; i != PCI_MAX_RESOURCE; i++) {
+		int fd;
 
 		/* skip empty BAR */
 		if ((phaddr = dev->mem_resource[i].phys_addr) == 0)
 			continue;
 
+		/* allocate memory to keep path */
+		maps[map_idx].path = rte_malloc(NULL, strlen(devname) + 1, 0);
+		if (maps[map_idx].path == NULL) {
+			RTE_LOG(ERR, EAL, "Cannot allocate memory for "
+					"path: %s\n", strerror(errno));
+			goto fail0;
+		}
+
+		/*
+		 * open resource file, to mmap it
+		 */
+		fd = open(devname, O_RDWR);
+		if (fd < 0) {
+			RTE_LOG(ERR, EAL, "Cannot open %s: %s\n",
+					devname, strerror(errno));
+			goto fail1;
+		}
+
 		/* if matching map is found, then use it */
 		offset = i * pagesz;
-		maps[map_idx].offset = offset;
+		mapaddr = pci_map_resource(NULL, fd, (off_t)offset,
+					(size_t)dev->mem_resource[i].len, 0);
+		close(fd);
+		if (mapaddr == MAP_FAILED)
+			goto fail1;
+
 		maps[map_idx].phaddr = dev->mem_resource[i].phys_addr;
 		maps[map_idx].size = dev->mem_resource[i].len;
-		mapaddr = pci_map_resource(NULL, devname, (off_t)offset,
-					(size_t)maps[map_idx].size);
-		if ((maps[map_idx].addr != NULL) || (mapaddr == NULL)) {
-			rte_free(uio_res);
-			return -1;
-		}
-
 		maps[map_idx].addr = mapaddr;
+		maps[map_idx].offset = offset;
+		strcpy(maps[map_idx].path, devname);
 		map_idx++;
 		dev->mem_resource[i].addr = mapaddr;
 	}
@@ -275,6 +292,14 @@ pci_uio_map_resource(struct rte_pci_device *dev)
 	TAILQ_INSERT_TAIL(uio_res_list, uio_res, next);
 
 	return 0;
+
+fail1:
+	rte_free(maps[map_idx].path);
+fail0:
+	for (i = 0; i < map_idx; i++)
+		rte_free(maps[i].path);
+	rte_free(uio_res);
+	return -1;
 }
 
 /* Scan one pci sysfs entry, and fill the devices list from it. */
diff --git a/lib/librte_eal/linuxapp/eal/eal_pci_uio.c b/lib/librte_eal/linuxapp/eal/eal_pci_uio.c
index 0128cec..1f94d3a 100644
--- a/lib/librte_eal/linuxapp/eal/eal_pci_uio.c
+++ b/lib/librte_eal/linuxapp/eal/eal_pci_uio.c
@@ -116,17 +116,11 @@ pci_uio_map_secondary(struct rte_pci_device *dev)
 					fd, (off_t)uio_res->maps[i].offset,
 					(size_t)uio_res->maps[i].size, 0);
 			if (mapaddr != uio_res->maps[i].addr) {
-				if (mapaddr == MAP_FAILED)
-					RTE_LOG(ERR, EAL,
-							"Cannot mmap device resource file %s: %s\n",
-							uio_res->maps[i].path,
-							strerror(errno));
-				else
-					RTE_LOG(ERR, EAL,
-							"Cannot mmap device resource file %s to address: %p\n",
-							uio_res->maps[i].path,
-							uio_res->maps[i].addr);
-
+				RTE_LOG(ERR, EAL,
+						"Cannot mmap device resource "
+						"file %s to address: %p\n",
+						uio_res->maps[i].path,
+						uio_res->maps[i].addr);
 				close(fd);
 				return -1;
 			}
@@ -348,8 +342,11 @@ pci_uio_map_resource(struct rte_pci_device *dev)
 
 		/* allocate memory to keep path */
 		maps[map_idx].path = rte_malloc(NULL, strlen(devname) + 1, 0);
-		if (maps[map_idx].path == NULL)
+		if (maps[map_idx].path == NULL) {
+			RTE_LOG(ERR, EAL, "Cannot allocate memory for "
+					"path: %s\n", strerror(errno));
 			goto fail0;
+		}
 
 		/*
 		 * open resource file, to mmap it
-- 
1.9.1

  parent reply	other threads:[~2015-03-24  4:19 UTC|newest]

Thread overview: 87+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-03-04  3:11 [dpdk-dev] [PATCH 1/3] BSD: Support Port Hotplug function Tetsuya Mukawa
2015-03-04  3:11 ` [dpdk-dev] [PATCH 2/3] eal, ethdev: Remove CONFIG_RTE_LIBRTE_EAL_HOTPLUG Tetsuya Mukawa
2015-03-04  3:11 ` [dpdk-dev] [PATCH 3/3] doc: Remove BSD limitation from hotplug section of programmer's guide Tetsuya Mukawa
2015-03-06 10:32 ` [dpdk-dev] [PATCH 1/3] BSD: Support Port Hotplug function Iremonger, Bernard
2015-03-09  2:23   ` Tetsuya Mukawa
2015-03-12 10:24     ` Tetsuya Mukawa
2015-03-12 10:17 ` [dpdk-dev] [PATCH v2 00/15] eal: Port Hotplug support for BSD Tetsuya Mukawa
2015-03-12 10:17   ` [dpdk-dev] [PATCH v2 01/15] eal: Fix cording style of eal_pci.c and eal_pci_uio.c Tetsuya Mukawa
2015-03-12 10:48     ` Bruce Richardson
2015-03-12 10:57       ` Qiu, Michael
2015-03-12 11:09         ` Bruce Richardson
2015-03-13  0:25           ` Tetsuya Mukawa
2015-03-12 10:17   ` [dpdk-dev] [PATCH v2 02/15] eal: Close file descriptor of uio configuration Tetsuya Mukawa
2015-03-13 13:54     ` Iremonger, Bernard
2015-03-12 10:17   ` [dpdk-dev] [PATCH v2 03/15] eal: Fix memory leak of pci_uio_map_resource() Tetsuya Mukawa
2015-03-13 14:04     ` Iremonger, Bernard
2015-03-17  9:30     ` [dpdk-dev] [PATCH 0/6] Clean up pci uio implementations Tetsuya Mukawa
2015-03-17  9:30       ` [dpdk-dev] [PATCH 1/6] eal: Fix cording style of eal_pci.c and eal_pci_uio.c Tetsuya Mukawa
2015-03-18 14:29         ` Bruce Richardson
2015-03-18 15:08         ` David Marchand
2015-03-17  9:30       ` [dpdk-dev] [PATCH 2/6] eal: Close file descriptor of uio configuration Tetsuya Mukawa
2015-03-18 15:19         ` David Marchand
2015-03-20  1:53           ` Tetsuya Mukawa
2015-03-19 16:04         ` Iremonger, Bernard
2015-03-20  1:54           ` Tetsuya Mukawa
2015-03-17  9:30       ` [dpdk-dev] [PATCH 3/6] eal: Fix memory leaks and needless incrementation of pci uio implementation Tetsuya Mukawa
2015-03-18 15:39         ` David Marchand
2015-03-20  1:53           ` Tetsuya Mukawa
2015-03-19 16:20         ` Iremonger, Bernard
2015-03-20  1:54           ` Tetsuya Mukawa
2015-03-17  9:30       ` [dpdk-dev] [PATCH 4/6] eal/bsdapp: Change names of pci related data structure Tetsuya Mukawa
2015-03-17  9:30       ` [dpdk-dev] [PATCH 5/6] eal: Use map_idx in pci_uio_map_resource() of bsdapp to work same as linuxapp Tetsuya Mukawa
2015-03-17  9:30       ` [dpdk-dev] [PATCH 6/6] eal: Fix interface of pci_map_resource() Tetsuya Mukawa
2015-03-20  9:53         ` Iremonger, Bernard
2015-03-24  4:18           ` Tetsuya Mukawa
2015-03-24  4:18         ` [dpdk-dev] [PATCH v2 0/6] Clean up pci uio implementations Tetsuya Mukawa
2015-03-24  4:18           ` [dpdk-dev] [PATCH v2 1/6] eal: Fix coding style of eal_pci.c and eal_pci_uio.c Tetsuya Mukawa
2015-03-24  4:18           ` [dpdk-dev] [PATCH v2 2/6] eal: Close file descriptor of uio configuration Tetsuya Mukawa
2015-03-24 18:33             ` Stephen Hemminger
2015-03-25  3:17               ` Tetsuya Mukawa
2015-03-25  5:07                 ` Stephen Hemminger
2015-03-26  4:19                   ` Tetsuya Mukawa
2015-03-26 10:03                     ` Iremonger, Bernard
2015-03-27  6:01                       ` Tetsuya Mukawa
2015-03-24  4:18           ` [dpdk-dev] [PATCH v2 3/6] eal: Fix memory leaks and needless increment of pci_map_addr Tetsuya Mukawa
2015-03-25 15:00             ` Iremonger, Bernard
2015-03-26  2:44               ` Tetsuya Mukawa
2015-03-24  4:18           ` [dpdk-dev] [PATCH v2 4/6] eal/bsdapp: Change names of pci related data structure Tetsuya Mukawa
2015-03-24  4:18           ` [dpdk-dev] [PATCH v2 5/6] eal: Use map_idx in pci_uio_map_resource() of bsdapp to work same as linuxapp Tetsuya Mukawa
2015-03-25 15:27             ` Iremonger, Bernard
2015-03-26  2:50               ` Tetsuya Mukawa
2015-03-26 10:41                 ` Iremonger, Bernard
2015-03-27  8:19                   ` Tetsuya Mukawa
2015-03-24  4:18           ` Tetsuya Mukawa [this message]
2015-03-25 15:03             ` [dpdk-dev] [PATCH v2 6/6] eal: Fix interface of pci_map_resource() Iremonger, Bernard
2015-03-27  8:39         ` [dpdk-dev] [PATCH v3 0/5] Clean up pci uio implementations Tetsuya Mukawa
2015-03-27  8:39           ` [dpdk-dev] [PATCH v3 1/5] eal: Fix coding style of eal_pci.c and eal_pci_uio.c Tetsuya Mukawa
2015-03-27  8:39           ` [dpdk-dev] [PATCH v3 2/5] eal: Close file descriptor of uio configuration Tetsuya Mukawa
2015-03-27  8:39           ` [dpdk-dev] [PATCH v3 3/5] eal: Fix memory leaks and needless increment of pci_map_addr Tetsuya Mukawa
2015-03-27  8:39           ` [dpdk-dev] [PATCH v3 4/5] eal/bsdapp: Change names of pci related data structure Tetsuya Mukawa
2015-03-27  8:39           ` [dpdk-dev] [PATCH v3 5/5] eal: Fix uio mapping differences between linuxapp and bsdapp Tetsuya Mukawa
2015-04-21 13:15           ` [dpdk-dev] [PATCH v3 0/5] Clean up pci uio implementations Iremonger, Bernard
2015-04-23  4:23             ` Tetsuya Mukawa
2015-04-23  8:12               ` Iremonger, Bernard
2015-04-23  9:48                 ` Tetsuya Mukawa
2015-03-12 10:17   ` [dpdk-dev] [PATCH v2 04/15] eal: Fix needless incrementation of pci_map_addr Tetsuya Mukawa
2015-03-13 14:49     ` Iremonger, Bernard
2015-03-12 10:17   ` [dpdk-dev] [PATCH v2 05/15] eal/bsdapp: Change names of pci related data structure Tetsuya Mukawa
2015-03-12 10:17   ` [dpdk-dev] [PATCH v2 06/15] eal: Use map_idx in pci_uio_map_resource() of bsdapp to work same as linuxapp Tetsuya Mukawa
2015-03-12 10:17   ` [dpdk-dev] [PATCH v2 07/15] eal: Fix interface of pci_map_resource() of bsdapp Tetsuya Mukawa
2015-03-12 11:04     ` Bruce Richardson
2015-03-12 10:17   ` [dpdk-dev] [PATCH v2 08/15] eal: Add pci_uio_alloc_uio_resource() Tetsuya Mukawa
2015-03-12 10:17   ` [dpdk-dev] [PATCH v2 09/15] eal: Add pci_uio_map_uio_resource_by_index() Tetsuya Mukawa
2015-03-12 10:17   ` [dpdk-dev] [PATCH v2 10/15] eal: Consolidate pci_map and mapped_pci_resource of linuxapp and bsdapp Tetsuya Mukawa
2015-03-12 10:17   ` [dpdk-dev] [PATCH v2 11/15] eal: Consolidate rte_eal_pci_probe/close_one_driver() " Tetsuya Mukawa
2015-03-13 15:03     ` Iremonger, Bernard
2015-03-12 10:17   ` [dpdk-dev] [PATCH v2 12/15] eal: Consolidate pci_map/unmap_device() " Tetsuya Mukawa
2015-03-13 15:10     ` Iremonger, Bernard
2015-03-12 10:17   ` [dpdk-dev] [PATCH v2 13/15] eal: Consolidate pci_map/unmap_resource() " Tetsuya Mukawa
2015-03-13 15:23     ` Iremonger, Bernard
2015-03-12 10:17   ` [dpdk-dev] [PATCH v2 14/15] eal: Consolidate pci uio functions " Tetsuya Mukawa
2015-03-12 10:17   ` [dpdk-dev] [PATCH v2 15/15] eal: Enable Port Hotplug as default in Linux and BSD Tetsuya Mukawa
2015-03-13 15:47     ` Iremonger, Bernard
2015-03-17  8:08       ` Tetsuya Mukawa
2015-03-19 11:41         ` Iremonger, Bernard
2015-03-13 11:46   ` [dpdk-dev] [PATCH v2 00/15] eal: Port Hotplug support for BSD Iremonger, Bernard
2015-03-16  3:36     ` Tetsuya Mukawa

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