diff options
| author | Ido Schimmel <idosch@mellanox.com> | 2020-09-29 11:15:55 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-09-30 18:01:26 -0700 |
| commit | 93e155967ccc053b71d408edf8c0142199df5c8c (patch) | |
| tree | 8f8300ccbce6f14f6e83aadc43e12e468b50bdca /net | |
| parent | a848c05f4bb6c2db9e686e2440454af811e6d2e5 (diff) | |
| download | linux-93e155967ccc053b71d408edf8c0142199df5c8c.tar.bz2 | |
drop_monitor: Filter control packets in drop monitor
Previously, devlink called into drop monitor in order to report hardware
originated drops / exceptions. devlink intentionally filtered control
packets and did not pass them to drop monitor as they were not dropped
by the underlying hardware.
Now drop monitor registers its probe on a generic 'devlink_trap_report'
tracepoint and should therefore perform this filtering itself instead of
having devlink do that.
Add the trap type as metadata and have drop monitor ignore control
packets.
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/core/devlink.c | 8 | ||||
| -rw-r--r-- | net/core/drop_monitor.c | 6 |
2 files changed, 7 insertions, 7 deletions
diff --git a/net/core/devlink.c b/net/core/devlink.c index 2ea9fdc0df2d..6f2863e717a9 100644 --- a/net/core/devlink.c +++ b/net/core/devlink.c @@ -9269,6 +9269,7 @@ devlink_trap_report_metadata_set(struct devlink_trap_metadata *metadata, metadata->trap_name = trap_item->trap->name; metadata->trap_group_name = trap_item->group_item->group->name; metadata->fa_cookie = fa_cookie; + metadata->trap_type = trap_item->trap->type; spin_lock(&in_devlink_port->type_lock); if (in_devlink_port->type == DEVLINK_PORT_TYPE_ETH) @@ -9294,13 +9295,6 @@ void devlink_trap_report(struct devlink *devlink, struct sk_buff *skb, devlink_trap_stats_update(trap_item->stats, skb->len); devlink_trap_stats_update(trap_item->group_item->stats, skb->len); - /* Control packets were not dropped by the device or encountered an - * exception during forwarding and therefore should not be reported to - * the kernel's drop monitor. - */ - if (trap_item->trap->type == DEVLINK_TRAP_TYPE_CONTROL) - return; - if (trace_devlink_trap_report_enabled()) { struct devlink_trap_metadata metadata = {}; diff --git a/net/core/drop_monitor.c b/net/core/drop_monitor.c index 0e4309414a30..a28b743489c5 100644 --- a/net/core/drop_monitor.c +++ b/net/core/drop_monitor.c @@ -444,6 +444,9 @@ net_dm_hw_trap_summary_probe(void *ignore, const struct devlink *devlink, unsigned long flags; int i; + if (metadata->trap_type == DEVLINK_TRAP_TYPE_CONTROL) + return; + hw_data = this_cpu_ptr(&dm_hw_cpu_data); spin_lock_irqsave(&hw_data->lock, flags); hw_entries = hw_data->hw_entries; @@ -937,6 +940,9 @@ net_dm_hw_trap_packet_probe(void *ignore, const struct devlink *devlink, struct sk_buff *nskb; unsigned long flags; + if (metadata->trap_type == DEVLINK_TRAP_TYPE_CONTROL) + return; + if (!skb_mac_header_was_set(skb)) return; |