Hi, > -----Original Message----- > From: dev <dev-boun...@dpdk.org> On Behalf Of Viacheslav Ovsiienko > Sent: Sunday, July 21, 2019 5:57 PM > To: dev@dpdk.org > Cc: Yongseok Koh <ys...@mellanox.com>; Shahaf Shuler > <shah...@mellanox.com>; step...@networkplumber.org > Subject: [dpdk-dev] [PATCH v2 0/2] net/mlx5: cache the associated network > device ifindex > > In mlx5 PMD the associated device index is retrieved via Netlink request to > underlying Infiniband device driver. This network device index is permanent > throughout the lifetime of device. We do not spawn the rte_eth_dev ports > without associated network device, and if network device is being unbound > we get the remove notification event message and rte_eth_dev port is also > detached. So, we may store the ifindex in mlx5_device_spawn() routine at > rte_eth_dev port creation and initialization time and use the cached > value further instead of doing actual Netlink request. > > This approach allows the query API routines like mlx5_link_update to be > thread-safe due to Netlink request elimination. mlx5_link_update() may > be called in asynchronous event handler concurrently and it may cause > application hang. > > This patch extends and updates the [1]. > > [1] > https://eur03.safelinks.protection.outlook.com/?url=http%3A%2F%2Fpatch > es.dpdk.org%2Fpatch%2F56417%2F&data=02%7C01%7Crasland%40mell > anox.com%7C3c155fb435384529783608d70debb168%7Ca652971c7d2e4d9ba6 > a4d149256f461b%7C0%7C0%7C636993178256642102&sdata=GNj8%2B79 > %2FoBQzu7esmy4wN4e6WC7RHREDbV4OZTq6SOA%3D&reserved=0 > > Reported-by: Stephen Hemminger <step...@networkplumber.org> > Signed-off-by: Viacheslav Ovsiienko <viachesl...@mellanox.com> > > ---
Series applied to next-net-mlx Kindest regards, Raslan Darawsheh
