From 4d0e2a5da74b030aa4f98c8d6249b2b47fca2317 Mon Sep 17 00:00:00 2001 From: Gaetan Rivet Date: Wed, 2 Aug 2017 19:10:22 +0200 Subject: [PATCH] eal: read and parse device option separately When the EAL parses the common options given to the application, not all subsystems are available. Some device drivers are registered afterward upon dynamic plugin loading. Devices using those drivers are thus unable to be parsed by any drivers and are rejected. Store the device options first and keep them for later processing. Parse these right before initializing the buses, the drivers must have been stabilized at this point. Signed-off-by: Gaetan Rivet Tested-by: Dirk-Holger Lenz --- lib/librte_eal/bsdapp/eal/eal.c | 5 ++ lib/librte_eal/common/eal_common_options.c | 83 +++++++++++++++++++--- lib/librte_eal/common/eal_options.h | 1 + lib/librte_eal/linuxapp/eal/eal.c | 5 ++ 4 files changed, 84 insertions(+), 10 deletions(-) diff --git a/lib/librte_eal/bsdapp/eal/eal.c b/lib/librte_eal/bsdapp/eal/eal.c index 80fe21de3c..5fa598842d 100644 --- a/lib/librte_eal/bsdapp/eal/eal.c +++ b/lib/librte_eal/bsdapp/eal/eal.c @@ -614,6 +614,11 @@ rte_eal_init(int argc, char **argv) rte_config.master_lcore, thread_id, cpuset, ret == 0 ? "" : "..."); + if (eal_option_device_parse()) { + rte_errno = ENODEV; + return -1; + } + if (rte_bus_scan()) { rte_eal_init_alert("Cannot scan the buses for devices\n"); rte_errno = ENODEV; diff --git a/lib/librte_eal/common/eal_common_options.c b/lib/librte_eal/common/eal_common_options.c index 56c368cdea..1da185e598 100644 --- a/lib/librte_eal/common/eal_common_options.c +++ b/lib/librte_eal/common/eal_common_options.c @@ -47,6 +47,7 @@ #include #include #include +#include #include #include #include @@ -125,11 +126,67 @@ static const char *default_solib_dir = RTE_EAL_PMD_PATH; static const char dpdk_solib_path[] __attribute__((used)) = "DPDK_PLUGIN_PATH=" RTE_EAL_PMD_PATH; +TAILQ_HEAD(device_option_list, device_option); + +struct device_option { + TAILQ_ENTRY(device_option) next; + + enum rte_devtype type; + char arg[]; +}; + +static struct device_option_list devopt_list = +TAILQ_HEAD_INITIALIZER(devopt_list); static int master_lcore_parsed; static int mem_parsed; static int core_parsed; +static int +eal_option_device_add(enum rte_devtype type, const char *optarg) +{ + struct device_option *devopt; + size_t optlen; + int ret; + + optlen = strlen(optarg) + 1; + devopt = calloc(1, sizeof(*devopt) + optlen); + if (devopt == NULL) { + RTE_LOG(ERR, EAL, "Unable to allocate device option\n"); + return -ENOMEM; + } + + devopt->type = type; + ret = snprintf(devopt->arg, optlen, "%s", optarg); + if (ret < 0) { + RTE_LOG(ERR, EAL, "Unable to copy device option\n"); + free(devopt); + return -EINVAL; + } + TAILQ_INSERT_TAIL(&devopt_list, devopt, next); + return 0; +} + +int +eal_option_device_parse(void) +{ + struct device_option *devopt; + void *tmp; + int ret = 0; + + TAILQ_FOREACH_SAFE(devopt, &devopt_list, next, tmp) { + if (ret == 0) { + ret = rte_eal_devargs_add(devopt->type, devopt->arg); + if (ret) + RTE_LOG(ERR, EAL, "Unable to parse device '%s'\n", + devopt->arg); + } + TAILQ_REMOVE(&devopt_list, devopt, next); + free(devopt); + } + return ret; +} + void eal_reset_internal_config(struct internal_config *internal_cfg) { @@ -941,20 +998,29 @@ int eal_parse_common_option(int opt, const char *optarg, struct internal_config *conf) { + static int b_used; + static int w_used; + switch (opt) { /* blacklist */ case 'b': - if (rte_eal_devargs_add(RTE_DEVTYPE_BLACKLISTED_PCI, + if (w_used) + goto bw_used; + if (eal_option_device_add(RTE_DEVTYPE_BLACKLISTED_PCI, optarg) < 0) { return -1; } + b_used = 1; break; /* whitelist */ case 'w': - if (rte_eal_devargs_add(RTE_DEVTYPE_WHITELISTED_PCI, + if (b_used) + goto bw_used; + if (eal_option_device_add(RTE_DEVTYPE_WHITELISTED_PCI, optarg) < 0) { return -1; } + w_used = 1; break; /* coremask */ case 'c': @@ -1061,7 +1127,7 @@ eal_parse_common_option(int opt, const char *optarg, break; case OPT_VDEV_NUM: - if (rte_eal_devargs_add(RTE_DEVTYPE_VIRTUAL, + if (eal_option_device_add(RTE_DEVTYPE_VIRTUAL, optarg) < 0) { return -1; } @@ -1100,6 +1166,10 @@ eal_parse_common_option(int opt, const char *optarg, } return 0; +bw_used: + RTE_LOG(ERR, EAL, "Options blacklist (-b) and whitelist (-w) " + "cannot be used at the same time\n"); + return -1; } static void @@ -1187,13 +1257,6 @@ eal_check_common_options(struct internal_config *internal_cfg) return -1; } - if (rte_eal_devargs_type_count(RTE_DEVTYPE_WHITELISTED_PCI) != 0 && - rte_eal_devargs_type_count(RTE_DEVTYPE_BLACKLISTED_PCI) != 0) { - RTE_LOG(ERR, EAL, "Options blacklist (-b) and whitelist (-w) " - "cannot be used at the same time\n"); - return -1; - } - return 0; } diff --git a/lib/librte_eal/common/eal_options.h b/lib/librte_eal/common/eal_options.h index a881c62e22..439a261041 100644 --- a/lib/librte_eal/common/eal_options.h +++ b/lib/librte_eal/common/eal_options.h @@ -91,6 +91,7 @@ extern const struct option eal_long_options[]; int eal_parse_common_option(int opt, const char *argv, struct internal_config *conf); +int eal_option_device_parse(void); int eal_adjust_config(struct internal_config *internal_cfg); int eal_check_common_options(struct internal_config *internal_cfg); void eal_common_usage(void); diff --git a/lib/librte_eal/linuxapp/eal/eal.c b/lib/librte_eal/linuxapp/eal/eal.c index b28bbab544..48f12f44cf 100644 --- a/lib/librte_eal/linuxapp/eal/eal.c +++ b/lib/librte_eal/linuxapp/eal/eal.c @@ -889,6 +889,11 @@ rte_eal_init(int argc, char **argv) return -1; } + if (eal_option_device_parse()) { + rte_errno = ENODEV; + return -1; + } + if (rte_bus_scan()) { rte_eal_init_alert("Cannot scan the buses for devices\n"); rte_errno = ENODEV; -- 2.20.1