diff options
| author |   Pablo Neira Ayuso <pablo@netfilter.org> | 2020-05-06 20:34:50 +0200 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2020-05-06 20:13:10 -0700 |
| commit | 16f8036086a929694c3c62f577bb5925fe4fd607 (patch) | |
| tree | 23ecfc61c1efb40e0f8fb93993cd3e1a6d870b19 /net/sched/cls_api.c | |
| parent | MAINTAINERS: put DYNAMIC INTERRUPT MODERATION in proper order (diff) | |
| download | wireguard-linux-16f8036086a929694c3c62f577bb5925fe4fd607.tar.xz wireguard-linux-16f8036086a929694c3c62f577bb5925fe4fd607.zip | |
net: flow_offload: skip hw stats check for FLOW_ACTION_HW_STATS_DONT_CARE
This patch adds FLOW_ACTION_HW_STATS_DONT_CARE which tells the driver
that the frontend does not need counters, this hw stats type request
never fails. The FLOW_ACTION_HW_STATS_DISABLED type explicitly requests
the driver to disable the stats, however, if the driver cannot disable
counters, it bails out.
TCA_ACT_HW_STATS_* maintains the 1:1 mapping with FLOW_ACTION_HW_STATS_*
except by disabled which is mapped to FLOW_ACTION_HW_STATS_DISABLED
(this is 0 in tc). Add tc_act_hw_stats() to perform the mapping between
TCA_ACT_HW_STATS_* and FLOW_ACTION_HW_STATS_*.
Fixes: 319a1d19471e ("flow_offload: check for basic action hw stats type")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched/cls_api.c')
| -rw-r--r-- | net/sched/cls_api.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c index c0e5b64b3caf..0a7ecc292bd3 100644 --- a/net/sched/cls_api.c +++ b/net/sched/cls_api.c @@ -3523,6 +3523,16 @@ static void tcf_sample_get_group(struct flow_action_entry *entry, #endif } +static enum flow_action_hw_stats tc_act_hw_stats(u8 hw_stats) +{ + if (WARN_ON_ONCE(hw_stats > TCA_ACT_HW_STATS_ANY)) + return FLOW_ACTION_HW_STATS_DONT_CARE; + else if (!hw_stats) + return FLOW_ACTION_HW_STATS_DISABLED; + + return hw_stats; +} + int tc_setup_flow_action(struct flow_action *flow_action, const struct tcf_exts *exts) { @@ -3546,7 +3556,7 @@ int tc_setup_flow_action(struct flow_action *flow_action, if (err) goto err_out_locked; - entry->hw_stats = act->hw_stats; + entry->hw_stats = tc_act_hw_stats(act->hw_stats); if (is_tcf_gact_ok(act)) { entry->id = FLOW_ACTION_ACCEPT; @@ -3614,7 +3624,7 @@ int tc_setup_flow_action(struct flow_action *flow_action, entry->mangle.mask = tcf_pedit_mask(act, k); entry->mangle.val = tcf_pedit_val(act, k); entry->mangle.offset = tcf_pedit_offset(act, k); - entry->hw_stats = act->hw_stats; + entry->hw_stats = tc_act_hw_stats(act->hw_stats); entry = &flow_action->entries[++j]; } } else if (is_tcf_csum(act)) { |