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69642c2ab2
For better error reporting to user space, add extack messages when gact
action offload fails.
Example:
# echo 1 > /sys/kernel/tracing/events/netlink/netlink_extack/enable
# tc filter add dev dummy0 ingress pref 1 proto all matchall skip_sw action continue
Error: cls_matchall: Failed to setup flow action.
We have an error talking to the kernel
# cat /sys/kernel/tracing/trace_pipe
tc-181 [002] b..1. 105.493450: netlink_extack: msg=act_gact: Offload of "continue" action is not supported
tc-181 [002] ..... 105.493466: netlink_extack: msg=cls_matchall: Failed to setup flow action
# tc filter add dev dummy0 ingress pref 1 proto all matchall skip_sw action reclassify
Error: cls_matchall: Failed to setup flow action.
We have an error talking to the kernel
# cat /sys/kernel/tracing/trace_pipe
tc-183 [002] b..1. 124.126477: netlink_extack: msg=act_gact: Offload of "reclassify" action is not supported
tc-183 [002] ..... 124.126489: netlink_extack: msg=cls_matchall: Failed to setup flow action
# tc filter add dev dummy0 ingress pref 1 proto all matchall skip_sw action pipe action drop
Error: cls_matchall: Failed to setup flow action.
We have an error talking to the kernel
# cat /sys/kernel/tracing/trace_pipe
tc-185 [002] b..1. 137.097791: netlink_extack: msg=act_gact: Offload of "pipe" action is not supported
tc-185 [002] ..... 137.097804: netlink_extack: msg=cls_matchall: Failed to setup flow action
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
78 lines
1.7 KiB
C
78 lines
1.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __NET_TC_GACT_H
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#define __NET_TC_GACT_H
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#include <net/act_api.h>
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#include <linux/tc_act/tc_gact.h>
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struct tcf_gact {
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struct tc_action common;
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#ifdef CONFIG_GACT_PROB
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u16 tcfg_ptype;
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u16 tcfg_pval;
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int tcfg_paction;
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atomic_t packets;
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#endif
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};
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#define to_gact(a) ((struct tcf_gact *)a)
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static inline bool __is_tcf_gact_act(const struct tc_action *a, int act,
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bool is_ext)
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{
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#ifdef CONFIG_NET_CLS_ACT
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struct tcf_gact *gact;
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if (a->ops && a->ops->id != TCA_ID_GACT)
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return false;
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gact = to_gact(a);
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if ((!is_ext && gact->tcf_action == act) ||
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(is_ext && TC_ACT_EXT_CMP(gact->tcf_action, act)))
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return true;
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#endif
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return false;
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}
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static inline bool is_tcf_gact_ok(const struct tc_action *a)
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{
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return __is_tcf_gact_act(a, TC_ACT_OK, false);
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}
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static inline bool is_tcf_gact_shot(const struct tc_action *a)
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{
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return __is_tcf_gact_act(a, TC_ACT_SHOT, false);
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}
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static inline bool is_tcf_gact_trap(const struct tc_action *a)
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{
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return __is_tcf_gact_act(a, TC_ACT_TRAP, false);
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}
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static inline bool is_tcf_gact_goto_chain(const struct tc_action *a)
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{
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return __is_tcf_gact_act(a, TC_ACT_GOTO_CHAIN, true);
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}
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static inline u32 tcf_gact_goto_chain_index(const struct tc_action *a)
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{
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return READ_ONCE(a->tcfa_action) & TC_ACT_EXT_VAL_MASK;
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}
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static inline bool is_tcf_gact_continue(const struct tc_action *a)
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{
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return __is_tcf_gact_act(a, TC_ACT_UNSPEC, false);
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}
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static inline bool is_tcf_gact_reclassify(const struct tc_action *a)
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{
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return __is_tcf_gact_act(a, TC_ACT_RECLASSIFY, false);
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}
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static inline bool is_tcf_gact_pipe(const struct tc_action *a)
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{
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return __is_tcf_gact_act(a, TC_ACT_PIPE, false);
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}
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#endif /* __NET_TC_GACT_H */
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