From 538d974bcdc57812487e9df7b57a29e5416c1087 Mon Sep 17 00:00:00 2001 From: Jeff Guo Date: Mon, 15 Oct 2018 19:27:23 +0800 Subject: [PATCH] bus: add sigbus handler When a device is hot-unplugged, a sigbus error will occur of the datapath can still read/write to the device. A handler is required here to capture the sigbus signal and handle it appropriately. This patch introduces a bus ops to handle sigbus errors. Each bus can implement its own case-dependent logic to handle the sigbus errors. Signed-off-by: Jeff Guo Acked-by: Shaopeng He Acked-by: Konstantin Ananyev --- lib/librte_eal/common/include/rte_bus.h | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/lib/librte_eal/common/include/rte_bus.h b/lib/librte_eal/common/include/rte_bus.h index 1bb53dc473..6be4b5cabe 100644 --- a/lib/librte_eal/common/include/rte_bus.h +++ b/lib/librte_eal/common/include/rte_bus.h @@ -181,6 +181,21 @@ typedef int (*rte_bus_parse_t)(const char *name, void *addr); */ typedef int (*rte_bus_hot_unplug_handler_t)(struct rte_device *dev); +/** + * Implement a specific sigbus handler, which is responsible for handling + * the sigbus error which is either original memory error, or specific memory + * error that caused of device be hot-unplugged. When sigbus error be captured, + * it could call this function to handle sigbus error. + * @param failure_addr + * Pointer of the fault address of the sigbus error. + * + * @return + * 0 for success handle the sigbus for hot-unplug. + * 1 for not process it, because it is a generic sigbus error. + * -1 for failed to handle the sigbus for hot-unplug. + */ +typedef int (*rte_bus_sigbus_handler_t)(const void *failure_addr); + /** * Bus scan policies */ @@ -228,6 +243,9 @@ struct rte_bus { rte_dev_iterate_t dev_iterate; /**< Device iterator. */ rte_bus_hot_unplug_handler_t hot_unplug_handler; /**< handle hot-unplug failure on the bus */ + rte_bus_sigbus_handler_t sigbus_handler; + /**< handle sigbus error on the bus */ + }; /** -- 2.20.1