On 04/26/2018 07:21 AM, Arnon Warshavsky wrote:
> Change some local functions return type from void to int.
> This change does not break ABI as the functions are internal.
> Panic thrown from threads was not handled in this patch
>
> Signed-off-by: Arnon Warshavsky <ar...@qwilt.com>
> Acked-by: Anatoly Burakov <anatoly.bura...@intel.com>
> ---
> lib/librte_eal/bsdapp/eal/eal.c | 71 ++++++++++++++++++++-------
> lib/librte_eal/linuxapp/eal/eal.c | 101
> ++++++++++++++++++++++++++------------
> 2 files changed, 121 insertions(+), 51 deletions(-)
>
> diff --git a/lib/librte_eal/bsdapp/eal/eal.c b/lib/librte_eal/bsdapp/eal/eal.c
> index 10d8dc0..c958ed9 100644
> --- a/lib/librte_eal/bsdapp/eal/eal.c
> +++ b/lib/librte_eal/bsdapp/eal/eal.c
> @@ -151,7 +151,7 @@ enum rte_iova_mode
> * We also don't lock the whole file, so that in future we can use read-locks
> * on other parts, e.g. memzones, to detect if there are running secondary
> * processes. */
> -static void
> +static int
> rte_eal_config_create(void)
> {
> void *rte_mem_cfg_addr;
> @@ -160,60 +160,83 @@ enum rte_iova_mode
> const char *pathname = eal_runtime_config_path();
>
> if (internal_config.no_shconf)
> - return;
> + return 0;
>
> if (mem_cfg_fd < 0){
> mem_cfg_fd = open(pathname, O_RDWR | O_CREAT, 0660);
> - if (mem_cfg_fd < 0)
> - rte_panic("Cannot open '%s' for rte_mem_config\n",
> pathname);
> + if (mem_cfg_fd < 0) {
> + RTE_LOG(CRIT, EAL, "%s(): Cannot open '%s' for
> rte_mem_config\n",
> + __func__, pathname);
> + return -1;
> + }
> }
>
> retval = ftruncate(mem_cfg_fd, sizeof(*rte_config.mem_config));
> if (retval < 0){
> close(mem_cfg_fd);
> - rte_panic("Cannot resize '%s' for rte_mem_config\n", pathname);
> + mem_cfg_fd = -1;
> + RTE_LOG(CRIT, EAL, "%s(): Cannot resize '%s' for
> rte_mem_config\n",
> + __func__, pathname);
> + return -1;
> }
>
> retval = fcntl(mem_cfg_fd, F_SETLK, &wr_lock);
> if (retval < 0){
> close(mem_cfg_fd);
> - rte_exit(EXIT_FAILURE, "Cannot create lock on '%s'. Is another
> primary "
> - "process running?\n", pathname);
> + mem_cfg_fd = -1;
> + RTE_LOG(CRIT, EAL, "%s(): Cannot create lock on '%s'. Is
> another primary process running?\n",
> + __func__, pathname);
> + return -1;
> }
>
> rte_mem_cfg_addr = mmap(NULL, sizeof(*rte_config.mem_config),
> PROT_READ | PROT_WRITE, MAP_SHARED, mem_cfg_fd,
> 0);
>
> if (rte_mem_cfg_addr == MAP_FAILED){
> - rte_panic("Cannot mmap memory for rte_config\n");
> + RTE_LOG(CRIT, EAL, "%s(): Cannot mmap memory for rte_config\n",
> + __func__);
> + close(mem_cfg_fd);
> + mem_cfg_fd = -1;
> + return -1;
> }
> memcpy(rte_mem_cfg_addr, &early_mem_config, sizeof(early_mem_config));
> rte_config.mem_config = rte_mem_cfg_addr;
> +
> + return 0;
> }
>
> /* attach to an existing shared memory config */
> -static void
> +static int
> rte_eal_config_attach(void)
> {
> void *rte_mem_cfg_addr;
> const char *pathname = eal_runtime_config_path();
>
> if (internal_config.no_shconf)
> - return;
> + return 0;
>
> if (mem_cfg_fd < 0){
> mem_cfg_fd = open(pathname, O_RDWR);
> - if (mem_cfg_fd < 0)
> - rte_panic("Cannot open '%s' for rte_mem_config\n",
> pathname);
> + if (mem_cfg_fd < 0) {
> + RTE_LOG(CRIT, EAL, "%s(): Cannot open '%s' for
> rte_mem_config\n",
> + __func__, pathname);
> + return -1;
> + }
> }
>
> rte_mem_cfg_addr = mmap(NULL, sizeof(*rte_config.mem_config),
> PROT_READ | PROT_WRITE, MAP_SHARED, mem_cfg_fd,
> 0);
> close(mem_cfg_fd);
> - if (rte_mem_cfg_addr == MAP_FAILED)
> - rte_panic("Cannot mmap memory for rte_config\n");
> + if (rte_mem_cfg_addr == MAP_FAILED) {
> + mem_cfg_fd = -1;
> + RTE_LOG(CRIT, EAL, "%s(): Cannot mmap memory for rte_config\n",
> + __func__);
> + return -1;
> + }
>
> rte_config.mem_config = rte_mem_cfg_addr;
> +
> + return 0;
> }
>
> /* Detect if we are a primary or a secondary process */
> @@ -237,23 +260,29 @@ enum rte_proc_type_t
> }
>
> /* Sets up rte_config structure with the pointer to shared memory config.*/
> -static void
> +static int
> rte_config_init(void)
> {
> rte_config.process_type = internal_config.process_type;
>
> switch (rte_config.process_type){
> case RTE_PROC_PRIMARY:
> - rte_eal_config_create();
> + if (rte_eal_config_create())
> + return -1;
> break;
> case RTE_PROC_SECONDARY:
> - rte_eal_config_attach();
> + if (rte_eal_config_attach())
> + return -1;
> rte_eal_mcfg_wait_complete(rte_config.mem_config);
> break;
> case RTE_PROC_AUTO:
> case RTE_PROC_INVALID:
> - rte_panic("Invalid process type\n");
> + default:
> + RTE_LOG(CRIT, EAL, "%s(): Invalid process type %d\n",
> + __func__, rte_config.process_type);
> + return -1;
> }
> + return 0;
> }
>
> /* display usage */
> @@ -552,7 +581,11 @@ static void rte_eal_init_alert(const char *msg)
> return -1;
> }
>
> - rte_config_init();
> + if (rte_config_init() != 0) {
> + rte_eal_init_alert("Failed to init configuration");
> + rte_errno = EFAULT;
> + return -1;
> + }
>
> /* Put mp channel init before bus scan so that we can init the vdev
> * bus through mp channel in the secondary process before the bus scan.
> diff --git a/lib/librte_eal/linuxapp/eal/eal.c
> b/lib/librte_eal/linuxapp/eal/eal.c
> index 200e879..c0d704b 100644
> --- a/lib/librte_eal/linuxapp/eal/eal.c
> +++ b/lib/librte_eal/linuxapp/eal/eal.c
> @@ -160,7 +160,7 @@ enum rte_iova_mode
> * We also don't lock the whole file, so that in future we can use read-locks
> * on other parts, e.g. memzones, to detect if there are running secondary
> * processes. */
> -static void
> +static int
> rte_eal_config_create(void)
> {
> void *rte_mem_cfg_addr;
> @@ -169,7 +169,7 @@ enum rte_iova_mode
> const char *pathname = eal_runtime_config_path();
>
> if (internal_config.no_shconf)
> - return;
> + return 0;
>
> /* map the config before hugepage address so that we don't waste a page
> */
> if (internal_config.base_virtaddr != 0)
> @@ -179,30 +179,42 @@ enum rte_iova_mode
> else
> rte_mem_cfg_addr = NULL;
>
> - if (mem_cfg_fd < 0){
> + if (mem_cfg_fd < 0) {
> mem_cfg_fd = open(pathname, O_RDWR | O_CREAT, 0660);
> - if (mem_cfg_fd < 0)
> - rte_panic("Cannot open '%s' for rte_mem_config\n",
> pathname);
> + if (mem_cfg_fd < 0) {
> + RTE_LOG(CRIT, EAL, "%s(): Cannot open '%s' for
> rte_mem_config\n",
> + __func__, pathname);
> + return -1;
> + }
> }
>
> retval = ftruncate(mem_cfg_fd, sizeof(*rte_config.mem_config));
> - if (retval < 0){
> + if (retval < 0) {
> close(mem_cfg_fd);
> - rte_panic("Cannot resize '%s' for rte_mem_config\n", pathname);
> + mem_cfg_fd = -1;
> + RTE_LOG(CRIT, EAL, "%s(): Cannot resize '%s' for
> rte_mem_config\n",
> + __func__, pathname);
> + return -1;
> }
>
> retval = fcntl(mem_cfg_fd, F_SETLK, &wr_lock);
> - if (retval < 0){
> + if (retval < 0) {
> close(mem_cfg_fd);
> - rte_exit(EXIT_FAILURE, "Cannot create lock on '%s'. Is another
> primary "
> - "process running?\n", pathname);
> + mem_cfg_fd = -1;
> + RTE_LOG(CRIT, EAL, "%s(): Cannot create lock on '%s'.Is another
> primary process running?\n",
> + __func__, pathname);
> + return -1;
> }
>
> rte_mem_cfg_addr = mmap(rte_mem_cfg_addr,
> sizeof(*rte_config.mem_config),
> PROT_READ | PROT_WRITE, MAP_SHARED, mem_cfg_fd,
> 0);
>
> - if (rte_mem_cfg_addr == MAP_FAILED){
> - rte_panic("Cannot mmap memory for rte_config\n");
> + if (rte_mem_cfg_addr == MAP_FAILED) {
> + RTE_LOG(CRIT, EAL, "%s(): Cannot mmap memory for rte_config\n",
> + __func__);
> + close(mem_cfg_fd);
> + mem_cfg_fd = -1;
> + return -1;
> }
> memcpy(rte_mem_cfg_addr, &early_mem_config, sizeof(early_mem_config));
> rte_config.mem_config = rte_mem_cfg_addr;
> @@ -211,10 +223,11 @@ enum rte_iova_mode
> * processes could later map the config into this exact location */
> rte_config.mem_config->mem_cfg_addr = (uintptr_t) rte_mem_cfg_addr;
>
> + return 0;
> }
>
> /* attach to an existing shared memory config */
> -static void
> +static int
> rte_eal_config_attach(void)
> {
> struct rte_mem_config *mem_config;
> @@ -222,33 +235,42 @@ enum rte_iova_mode
> const char *pathname = eal_runtime_config_path();
>
> if (internal_config.no_shconf)
> - return;
> + return 0;
>
> - if (mem_cfg_fd < 0){
> + if (mem_cfg_fd < 0) {
> mem_cfg_fd = open(pathname, O_RDWR);
> - if (mem_cfg_fd < 0)
> - rte_panic("Cannot open '%s' for rte_mem_config\n",
> pathname);
> + if (mem_cfg_fd < 0) {
> + RTE_LOG(CRIT, EAL, "%s(): Cannot open '%s' for
> rte_mem_config\n",
> + __func__, pathname);
> + return -1;
> + }
> }
>
> /* map it as read-only first */
> mem_config = (struct rte_mem_config *) mmap(NULL, sizeof(*mem_config),
> PROT_READ, MAP_SHARED, mem_cfg_fd, 0);
> - if (mem_config == MAP_FAILED)
> - rte_panic("Cannot mmap memory for rte_config! error %i (%s)\n",
> - errno, strerror(errno));
> + if (mem_config == MAP_FAILED) {
> + close(mem_cfg_fd);
> + mem_cfg_fd = -1;
> + RTE_LOG(CRIT, EAL, "%s(): Cannot mmap memory for rte_config!
> error %i (%s)\n",
> + __func__, errno, strerror(errno));
> + return -1;
> + }
>
> rte_config.mem_config = mem_config;
> +
> + return 0;
> }
>
> /* reattach the shared config at exact memory location primary process has
> it */
> -static void
> +static int
> rte_eal_config_reattach(void)
> {
> struct rte_mem_config *mem_config;
> void *rte_mem_cfg_addr;
>
> if (internal_config.no_shconf)
> - return;
> + return 0;
>
> /* save the address primary process has mapped shared config to */
> rte_mem_cfg_addr = (void *) (uintptr_t)
> rte_config.mem_config->mem_cfg_addr;
> @@ -263,16 +285,20 @@ enum rte_iova_mode
> if (mem_config == MAP_FAILED || mem_config != rte_mem_cfg_addr) {
> if (mem_config != MAP_FAILED)
> /* errno is stale, don't use */
> - rte_panic("Cannot mmap memory for rte_config at [%p],
> got [%p]"
> - " - please use '--base-virtaddr' option\n",
> - rte_mem_cfg_addr, mem_config);
> + RTE_LOG(CRIT, EAL, "%s(): Cannot mmap memory for
> rte_config at [%p], got [%p] - please use '--base-virtaddr' option\n",
> + __func__, rte_mem_cfg_addr, mem_config);
> else
> - rte_panic("Cannot mmap memory for rte_config! error %i
> (%s)\n",
> - errno, strerror(errno));
> + RTE_LOG(CRIT, EAL, "%s(): Cannot mmap memory for
> rte_config! error %i (%s)\n",
> + __func__, errno, strerror(errno));
> + close(mem_cfg_fd);
> + mem_cfg_fd = -1;
> + return -1;
> }
> close(mem_cfg_fd);
>
> rte_config.mem_config = mem_config;
> +
> + return 0;
> }
>
> /* Detect if we are a primary or a secondary process */
> @@ -296,24 +322,32 @@ enum rte_proc_type_t
> }
>
> /* Sets up rte_config structure with the pointer to shared memory config.*/
> -static void
> +static int
> rte_config_init(void)
> {
> rte_config.process_type = internal_config.process_type;
>
> switch (rte_config.process_type){
> case RTE_PROC_PRIMARY:
> - rte_eal_config_create();
> + if (rte_eal_config_create())
> + return -1;
> break;
> case RTE_PROC_SECONDARY:
> - rte_eal_config_attach();
> + if (rte_eal_config_attach())
> + return -1;
> rte_eal_mcfg_wait_complete(rte_config.mem_config);
> - rte_eal_config_reattach();
> + if (rte_eal_config_reattach())
> + return -1;
> break;
> case RTE_PROC_AUTO:
> case RTE_PROC_INVALID:
> - rte_panic("Invalid process type\n");
> + default:
> + RTE_LOG(CRIT, EAL, "%s(): Invalid process type %d\n",
> + __func__, rte_config.process_type);
> + return -1;
> }
> +
> + return 0;
> }
>
> /* Unlocks hugepage directories that were locked by eal_hugepage_info_init */
> @@ -833,6 +867,9 @@ static void rte_eal_init_alert(const char *msg)
>
> rte_srand(rte_rdtsc());
>
> + if (rte_config_init() != 0)
> + return -1;
> +
I'm confused, is this deliberate? there is now two rte_config_init()
calls. Aaron's comments on v4 about rte_eal_init_alert() are missed? and
it's missing the clear once and error number like the other returns.
> if (rte_eal_log_init(logid, internal_config.syslog_facility) < 0) {
> rte_eal_init_alert("Cannot init logging.");
> rte_errno = ENOMEM;
>
