在 2021/7/5 4:05, Thomas Monjalon 写道:
08/05/2021 10:00, Huisong Li:
Currently, if dev_configure is not invoked or fails to be invoked, users
can still invoke dev_start successfully. This patch adds a "dev_configured"
flag in "rte_eth_dev_data" to control whether dev_start can be invoked.
[...]
--- a/lib/ethdev/rte_ethdev_core.h
+++ b/lib/ethdev/rte_ethdev_core.h
@@ -167,7 +167,11 @@ struct rte_eth_dev_data {
scattered_rx : 1, /**< RX of scattered packets is ON(1) /
OFF(0) */
all_multicast : 1, /**< RX all multicast mode ON(1) / OFF(0). */
dev_started : 1, /**< Device state: STARTED(1) / STOPPED(0).
*/
- lro : 1; /**< RX LRO is ON(1) / OFF(0) */
+ lro : 1, /**< RX LRO is ON(1) / OFF(0) */
+ dev_configured : 1;
+ /**< Device configuration state:
+ * CONFIGURED(1) / NOT CONFIGURED(0).
+ */
Why not using "enum rte_eth_dev_state"?
Because rte_eth_dev.state is not shared between processes?
It doesn't feel right. "enum rte_eth_dev_state" is private to the
primary and secondary processes and can be independently controlled.
However, the secondary process does not make resource allocations and
does not call dev_configure().
These are done by the primary process and can be obtained or used by
the secondary process.
Like "dev_started" in struct rte_eth_dev_data.
.
