From: Jan Viktorin <viktorin@rehivetech.com>
To: dev@dpdk.org
Cc: Jan Viktorin <viktorin@rehivetech.com>,
Shreyansh Jain <shreyansh.jain@nxp.com>,
thomas.monjalon@6wind.com,
David Marchand <david.marchand@6wind.com>
Subject: [dpdk-dev] [PATCH v1 08/15] eal: define macro container_of
Date: Fri, 8 Jul 2016 21:09:38 +0200 [thread overview]
Message-ID: <20160708190945.24225-9-viktorin@rehivetech.com> (raw)
In-Reply-To: <20160708190945.24225-1-viktorin@rehivetech.com>
Signed-off-by: Jan Viktorin <viktorin@rehivetech.com>
---
lib/librte_eal/common/include/rte_common.h | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/lib/librte_eal/common/include/rte_common.h b/lib/librte_eal/common/include/rte_common.h
index 332f2a4..a9b6792 100644
--- a/lib/librte_eal/common/include/rte_common.h
+++ b/lib/librte_eal/common/include/rte_common.h
@@ -322,6 +322,22 @@ rte_bsf32(uint32_t v)
#define offsetof(TYPE, MEMBER) __builtin_offsetof (TYPE, MEMBER)
#endif
+/**
+ * Return pointer to the wrapping struct instance.
+ * Example:
+ *
+ * struct wrapper {
+ * ...
+ * struct child c;
+ * ...
+ * };
+ *
+ * struct child *x = obtain(...);
+ * struct wrapper *w = container_of(x, struct wrapper, c);
+ */
+#define container_of(p, type, member) \
+ ((type *) (((char *) (p)) - offsetof(type, member)))
+
#define _RTE_STR(x) #x
/** Take a macro value and get a string version of it */
#define RTE_STR(x) _RTE_STR(x)
--
2.9.0
next prev parent reply other threads:[~2016-07-08 19:10 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-08 19:09 [dpdk-dev] [PATCH v1 00/15] rte_driver/device infrastructure Jan Viktorin
2016-07-08 19:09 ` [dpdk-dev] [PATCH v1 01/15] eal: extract vdev infra Jan Viktorin
2016-07-11 13:29 ` Shreyansh jain
2016-07-11 14:08 ` Jan Viktorin
2016-07-08 19:09 ` [dpdk-dev] [PATCH v1 02/15] eal: no need to test for PMD_VDEV anymore Jan Viktorin
2016-07-08 19:09 ` [dpdk-dev] [PATCH v1 03/15] eal: do not call init for PMD_PDEV drivers Jan Viktorin
2016-07-08 19:09 ` [dpdk-dev] [PATCH v1 04/15] drivers: convert PMD_VDEV drivers to use rte_vdev_driver Jan Viktorin
2016-07-08 19:09 ` [dpdk-dev] [PATCH v1 05/15] eal: move init/uninit to rte_vdev_driver Jan Viktorin
2016-07-08 19:09 ` [dpdk-dev] [PATCH v1 06/15] eal: remove PMD_REGISTER_DRIVER Jan Viktorin
2016-07-08 19:09 ` [dpdk-dev] [PATCH v1 07/15] eal: get rid of pmd_type Jan Viktorin
2016-07-08 19:09 ` Jan Viktorin [this message]
2016-07-08 19:09 ` [dpdk-dev] [PATCH v1 09/15] eal: rte_pci.h includes rte_dev.h Jan Viktorin
2016-07-08 19:09 ` [dpdk-dev] [PATCH v1 10/15] eal: rename and move rte_pci_resource Jan Viktorin
2016-07-08 19:09 ` [dpdk-dev] [PATCH v1 11/15] eal/pci: inherit rte_driver by rte_pci_driver Jan Viktorin
2016-07-08 19:09 ` [dpdk-dev] [PATCH v1 12/15] eal: call rte_eal_driver_register Jan Viktorin
2016-07-08 19:09 ` [dpdk-dev] [PATCH v1 13/15] eal: introduce rte_device Jan Viktorin
2016-07-08 19:09 ` [dpdk-dev] [PATCH v1 14/15] eal/pci: inherit rte_device by rte_pci_device Jan Viktorin
2016-07-08 19:09 ` [dpdk-dev] [PATCH v1 15/15] eal/pci: insert rte_device on scan Jan Viktorin
2016-07-11 13:13 ` [dpdk-dev] [PATCH v1 00/15] rte_driver/device infrastructure Shreyansh jain
2016-07-15 13:19 ` Thomas Monjalon
2016-07-15 15:33 ` Jan Viktorin
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