From: Gaetan Rivet <gaetan.rivet@6wind.com>
To: dev@dpdk.org
Subject: [dpdk-dev] [PATCH 2/4] ethdev: add device iterator
Date: Fri, 3 Mar 2017 16:40:11 +0100 [thread overview]
Message-ID: <4b24ee0f847868d26edee14d09ca2455894201a9.1488550937.git.gaetan.rivet@6wind.com> (raw)
In-Reply-To: <cover.1488550937.git.gaetan.rivet@6wind.com>
This iterator helps applications iterate over the device list and skip
holes caused by invalid or detached devices.
Signed-off-by: Gaetan Rivet <gaetan.rivet@6wind.com>
---
lib/librte_ether/rte_ethdev.c | 13 +++++++++++++
lib/librte_ether/rte_ethdev.h | 19 +++++++++++++++++++
2 files changed, 32 insertions(+)
diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c
index d5d1b52..fcb9933 100644
--- a/lib/librte_ether/rte_ethdev.c
+++ b/lib/librte_ether/rte_ethdev.c
@@ -138,6 +138,19 @@ enum {
STAT_QMAP_RX
};
+uint8_t
+rte_eth_find_next(uint8_t port_id)
+{
+ while (port_id < RTE_MAX_ETHPORTS &&
+ rte_eth_devices[port_id].state != RTE_ETH_DEV_ATTACHED)
+ port_id++;
+
+ if (port_id >= RTE_MAX_ETHPORTS)
+ return RTE_MAX_ETHPORTS;
+
+ return port_id;
+}
+
static void
rte_eth_dev_data_alloc(void)
{
diff --git a/lib/librte_ether/rte_ethdev.h b/lib/librte_ether/rte_ethdev.h
index d51b8e9..59c4123 100644
--- a/lib/librte_ether/rte_ethdev.h
+++ b/lib/librte_ether/rte_ethdev.h
@@ -1731,6 +1731,25 @@ struct rte_eth_dev_data {
extern struct rte_eth_dev rte_eth_devices[];
/**
+ * Iterates over valid ethdev ports.
+ *
+ * @param: port_id
+ * The id of the next possible valid port.
+ * @return
+ * Next valid port id, RTE_MAX_ETHPORTS is there is none.
+ */
+uint8_t rte_eth_find_next(uint8_t port_id);
+
+/**
+ * Macro to iterate over all enabled ethdev ports.
+ */
+#define RTE_ETH_FOREACH_DEV(p) \
+ for (p = rte_eth_find_next(0); \
+ p < RTE_MAX_ETHPORTS; \
+ p = rte_eth_find_next(p + 1))
+
+
+/**
* Get the total number of Ethernet devices that have been successfully
* initialized by the [matching] Ethernet driver during the PCI probing phase.
* All devices whose port identifier is in the range
--
2.1.4
next prev parent reply other threads:[~2017-03-03 15:40 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-03 15:40 [dpdk-dev] [PATCH 0/4] clarify eth_dev state management Gaetan Rivet
2017-03-03 15:40 ` [dpdk-dev] [PATCH 1/4] ethdev: expose device states Gaetan Rivet
2017-03-03 15:40 ` Gaetan Rivet [this message]
2017-03-03 15:40 ` [dpdk-dev] [PATCH 3/4] ethdev: count devices consistently Gaetan Rivet
2017-03-30 19:26 ` Thomas Monjalon
2017-03-31 9:13 ` Gaëtan Rivet
2017-03-03 15:40 ` [dpdk-dev] [PATCH 4/4] app/testpmd: use ethdev iterator to list devices Gaetan Rivet
2017-03-31 12:04 ` [dpdk-dev] [PATCH v2 0/3] clarify eth_dev state management Gaetan Rivet
2017-03-31 12:04 ` [dpdk-dev] [PATCH v2 1/3] ethdev: expose device states Gaetan Rivet
2017-03-31 12:04 ` [dpdk-dev] [PATCH v2 2/3] ethdev: add device iterator Gaetan Rivet
2017-04-05 20:42 ` Thomas Monjalon
2017-03-31 12:04 ` [dpdk-dev] [PATCH v2 3/3] app/testpmd: use ethdev iterator to list devices Gaetan Rivet
2017-04-05 20:46 ` [dpdk-dev] [PATCH v2 0/3] clarify eth_dev state management Thomas Monjalon
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