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| author | Oleksandr Mazur <oleksandr.mazur@plvision.eu> | 2021-06-14 16:01:14 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-06-14 13:04:25 -0700 |
| commit | a7b3527a43feb017f48c699d859aef787c8af031 (patch) | |
| tree | 8b83228b8b927d7c51a3b9df808ba682767d2b14 /drivers/net/netdevsim/dev.c | |
| parent | 53f1bd6b281945f82b48ec44be34488ee9765cb8 (diff) | |
| download | linux-a7b3527a43feb017f48c699d859aef787c8af031.tar.gz linux-a7b3527a43feb017f48c699d859aef787c8af031.tar.bz2 linux-a7b3527a43feb017f48c699d859aef787c8af031.zip | |
drivers: net: netdevsim: add devlink trap_drop_counter_get implementation
Whenever query statistics is issued for trap with DROP action,
devlink subsystem would also fill-in statistics 'dropped' field.
In case if device driver did't register callback for hard drop
statistics querying, 'dropped' field will be omitted and not filled.
Add trap_drop_counter_get callback implementation to the netdevsim.
Add new test cases for netdevsim, to test both the callback
functionality, as well as drop statistics alteration check.
Signed-off-by: Oleksandr Mazur <oleksandr.mazur@plvision.eu>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/netdevsim/dev.c')
| -rw-r--r-- | drivers/net/netdevsim/dev.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/net/netdevsim/dev.c b/drivers/net/netdevsim/dev.c index 6f4bc70049d2..d85521989753 100644 --- a/drivers/net/netdevsim/dev.c +++ b/drivers/net/netdevsim/dev.c @@ -269,6 +269,9 @@ static int nsim_dev_debugfs_init(struct nsim_dev *nsim_dev) err = PTR_ERR(nsim_dev->nodes_ddir); goto err_out; } + debugfs_create_bool("fail_trap_counter_get", 0600, + nsim_dev->ddir, + &nsim_dev->fail_trap_counter_get); nsim_udp_tunnels_debugfs_create(nsim_dev); return 0; @@ -563,6 +566,7 @@ struct nsim_trap_data { struct delayed_work trap_report_dw; struct nsim_trap_item *trap_items_arr; u64 *trap_policers_cnt_arr; + u64 trap_pkt_cnt; struct nsim_dev *nsim_dev; spinlock_t trap_lock; /* Protects trap_items_arr */ }; @@ -1203,6 +1207,23 @@ static int nsim_rate_node_parent_set(struct devlink_rate *child, return 0; } +static int +nsim_dev_devlink_trap_hw_counter_get(struct devlink *devlink, + const struct devlink_trap *trap, + u64 *p_drops) +{ + struct nsim_dev *nsim_dev = devlink_priv(devlink); + u64 *cnt; + + if (nsim_dev->fail_trap_counter_get) + return -EINVAL; + + cnt = &nsim_dev->trap_data->trap_pkt_cnt; + *p_drops = (*cnt)++; + + return 0; +} + static const struct devlink_ops nsim_dev_devlink_ops = { .eswitch_mode_set = nsim_devlink_eswitch_mode_set, .eswitch_mode_get = nsim_devlink_eswitch_mode_get, @@ -1226,6 +1247,7 @@ static const struct devlink_ops nsim_dev_devlink_ops = { .rate_node_del = nsim_rate_node_del, .rate_leaf_parent_set = nsim_rate_leaf_parent_set, .rate_node_parent_set = nsim_rate_node_parent_set, + .trap_drop_counter_get = nsim_dev_devlink_trap_hw_counter_get, }; #define NSIM_DEV_MAX_MACS_DEFAULT 32 |