diff options
Diffstat (limited to 'lib/librte_eal/common/eal_common_bus.c')
-rw-r--r-- | lib/librte_eal/common/eal_common_bus.c | 45 |
1 files changed, 44 insertions, 1 deletions
diff --git a/lib/librte_eal/common/eal_common_bus.c b/lib/librte_eal/common/eal_common_bus.c index 0943851c..c8f1901f 100644 --- a/lib/librte_eal/common/eal_common_bus.c +++ b/lib/librte_eal/common/eal_common_bus.c @@ -37,10 +37,11 @@ #include <rte_bus.h> #include <rte_debug.h> #include <rte_string_fns.h> +#include <rte_errno.h> #include "eal_private.h" -struct rte_bus_list rte_bus_list = +static struct rte_bus_list rte_bus_list = TAILQ_HEAD_INITIALIZER(rte_bus_list); void @@ -242,3 +243,45 @@ rte_bus_get_iommu_class(void) } return mode; } + +static int +bus_handle_sigbus(const struct rte_bus *bus, + const void *failure_addr) +{ + int ret; + + if (!bus->sigbus_handler) + return -1; + + ret = bus->sigbus_handler(failure_addr); + + /* find bus but handle failed, keep the errno be set. */ + if (ret < 0 && rte_errno == 0) + rte_errno = ENOTSUP; + + return ret > 0; +} + +int +rte_bus_sigbus_handler(const void *failure_addr) +{ + struct rte_bus *bus; + + int ret = 0; + int old_errno = rte_errno; + + rte_errno = 0; + + bus = rte_bus_find(NULL, bus_handle_sigbus, failure_addr); + /* can not find bus. */ + if (!bus) + return 1; + /* find bus but handle failed, pass on the new errno. */ + else if (rte_errno != 0) + return -1; + + /* restore the old errno. */ + rte_errno = old_errno; + + return ret; +} |