On 04/19/2018 07:01 AM, Arnon Warshavsky wrote:
> Local function to this file,
> changing from void to int is non-abi-breaking
>
> Signed-off-by: Arnon Warshavsky <ar...@qwilt.com>
> ---
> lib/librte_ether/rte_ethdev.c | 36 +++++++++++++++++++++++++-----------
> 1 file changed, 25 insertions(+), 11 deletions(-)
>
> diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c
> index 7821a88..9c13827 100644
> --- a/lib/librte_ether/rte_ethdev.c
> +++ b/lib/librte_ether/rte_ethdev.c
> @@ -194,7 +194,7 @@ enum {
> return port_id;
> }
>
> -static void
> +static int
> rte_eth_dev_shared_data_prepare(void)
> {
> const unsigned flags = 0;
> @@ -210,8 +210,12 @@ enum {
> rte_socket_id(), flags);
> } else
> mz = rte_memzone_lookup(MZ_RTE_ETH_DEV_DATA);
> - if (mz == NULL)
> - rte_panic("Cannot allocate ethdev shared data\n");
> + if (mz == NULL) {
> + rte_spinlock_unlock(&rte_eth_shared_data_lock);
> + RTE_LOG(CRIT, EAL, "%s(): Cannot allocate ethdev shared
> data\n",
> + __func__);
> + return -1;
> + }
>
> rte_eth_dev_shared_data = mz->addr;
> if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
> @@ -224,6 +228,8 @@ enum {
> }
>
> rte_spinlock_unlock(&rte_eth_shared_data_lock);
> +
> + return 0;
> }
>
> struct rte_eth_dev *
> @@ -274,7 +280,8 @@ struct rte_eth_dev *
> uint16_t port_id;
> struct rte_eth_dev *eth_dev = NULL;
>
> - rte_eth_dev_shared_data_prepare();
> + if (rte_eth_dev_shared_data_prepare() != 0)
Lots of "!= 0"'s - you might gather by now that I don't like them :-)
> + return NULL;
>
> /* Synchronize port creation between primary and secondary threads. */
> rte_spinlock_lock(&rte_eth_dev_shared_data->ownership_lock);
> @@ -317,7 +324,8 @@ struct rte_eth_dev *
> uint16_t i;
> struct rte_eth_dev *eth_dev = NULL;
>
> - rte_eth_dev_shared_data_prepare();
> + if (rte_eth_dev_shared_data_prepare() != 0)
> + return NULL;
>
> /* Synchronize port attachment to primary port creation and release. */
> rte_spinlock_lock(&rte_eth_dev_shared_data->ownership_lock);
> @@ -345,7 +353,8 @@ struct rte_eth_dev *
> if (eth_dev == NULL)
> return -EINVAL;
>
> - rte_eth_dev_shared_data_prepare();
> + if (rte_eth_dev_shared_data_prepare() != 0)
> + return -1;
>
> rte_spinlock_lock(&rte_eth_dev_shared_data->ownership_lock);
>
> @@ -399,7 +408,8 @@ struct rte_eth_dev *
> int __rte_experimental
> rte_eth_dev_owner_new(uint64_t *owner_id)
> {
> - rte_eth_dev_shared_data_prepare();
> + if (rte_eth_dev_shared_data_prepare() != 0)
> + return -1;
>
> rte_spinlock_lock(&rte_eth_dev_shared_data->ownership_lock);
>
> @@ -450,7 +460,8 @@ struct rte_eth_dev *
> {
> int ret;
>
> - rte_eth_dev_shared_data_prepare();
> + if (rte_eth_dev_shared_data_prepare() != 0)
> + return -1;
>
> rte_spinlock_lock(&rte_eth_dev_shared_data->ownership_lock);
>
> @@ -467,7 +478,8 @@ struct rte_eth_dev *
> {.id = RTE_ETH_DEV_NO_OWNER, .name = ""};
> int ret;
>
> - rte_eth_dev_shared_data_prepare();
> + if (rte_eth_dev_shared_data_prepare() != 0)
> + return -1;
>
> rte_spinlock_lock(&rte_eth_dev_shared_data->ownership_lock);
>
> @@ -482,7 +494,8 @@ struct rte_eth_dev *
> {
hmm, I'm wondering should void __rte_experimental
rte_eth_dev_owner_delete change to return an int, now that there is a
fail case and it is still experimental...?
> uint16_t port_id;
>
> - rte_eth_dev_shared_data_prepare();
> + if (rte_eth_dev_shared_data_prepare() != 0)
> + return;
>
> rte_spinlock_lock(&rte_eth_dev_shared_data->ownership_lock);
>
> @@ -502,7 +515,8 @@ struct rte_eth_dev *
> {
> int ret = 0;
>
> - rte_eth_dev_shared_data_prepare();
> + if (rte_eth_dev_shared_data_prepare() != 0)
> + return -1;
>
> rte_spinlock_lock(&rte_eth_dev_shared_data->ownership_lock);
>
>
