On 7/23/2019 10:13 AM, Andrew Rybchenko wrote: > rte_eth_dev_info_get() returns void and caller does know if the function > does its job or not. Changing of the return value to int would be > API/ABI breakage which requires deprecation process and cannot be > backported to stable branches. For now, make sure that device info is > initialized even in the case of invalid port ID.
+1 to return a status from function for long term. But someone looks below code can think we are doing an unnecessary memset for the error case, and will fix it :) What do you think adding a comment to prevent this? > > Fixes: a30268e9a2d0 ("ethdev: reset whole dev info structure before filling") > Cc: sta...@dpdk.org > > Signed-off-by: Andrew Rybchenko <arybche...@solarflare.com> > --- > lib/librte_ethdev/rte_ethdev.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/lib/librte_ethdev/rte_ethdev.c b/lib/librte_ethdev/rte_ethdev.c > index 64191737c..97b093edc 100644 > --- a/lib/librte_ethdev/rte_ethdev.c > +++ b/lib/librte_ethdev/rte_ethdev.c > @@ -2552,10 +2552,11 @@ rte_eth_dev_info_get(uint16_t port_id, struct > rte_eth_dev_info *dev_info) > .nb_mtu_seg_max = UINT16_MAX, > }; > > + memset(dev_info, 0, sizeof(struct rte_eth_dev_info)); > + > RTE_ETH_VALID_PORTID_OR_RET(port_id); > dev = &rte_eth_devices[port_id]; > > - memset(dev_info, 0, sizeof(struct rte_eth_dev_info)); > dev_info->rx_desc_lim = lim; > dev_info->tx_desc_lim = lim; > dev_info->device = dev->device; >