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Date: Thu, 22 Jul 2021 22:50:33 +0800
From: kernel test robot <lkp@...el.com>
To: Simon Horman <simon.horman@...igine.com>,
David Miller <davem@...emloft.net>,
Jakub Kicinski <kuba@...nel.org>
Cc: kbuild-all@...ts.01.org, netdev@...r.kernel.org,
Jamal Hadi Salim <jhs@...atatu.com>,
Cong Wang <xiyou.wangcong@...il.com>,
Jiri Pirko <jiri@...lanox.com>, oss-drivers@...igine.com,
Baowen Zheng <baowen.zheng@...igine.com>,
Louis Peens <louis.peens@...igine.com>,
Simon Horman <simon.horman@...igine.com>
Subject: Re: [PATCH net-next 2/3] flow_offload: add process to delete
offloaded actions from net device
Hi Simon,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on net-next/master]
url: https://github.com/0day-ci/linux/commits/Simon-Horman/flow_offload-hardware-offload-of-TC-actions/20210722-172229
base: https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git c2255ff47768c94a0ebc3968f007928bb47ea43b
config: microblaze-randconfig-r011-20210722 (attached as .config)
compiler: microblaze-linux-gcc (GCC) 10.3.0
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://github.com/0day-ci/linux/commit/a8e2d0acfc98c127ab0b5189f7635049515c43f3
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Simon-Horman/flow_offload-hardware-offload-of-TC-actions/20210722-172229
git checkout a8e2d0acfc98c127ab0b5189f7635049515c43f3
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-10.3.0 make.cross ARCH=microblaze
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>
All warnings (new ones prefixed by >>):
>> net/sched/act_api.c:1063:5: warning: no previous prototype for 'tcf_action_offload_cmd_pre' [-Wmissing-prototypes]
1063 | int tcf_action_offload_cmd_pre(struct tc_action *actions[],
| ^~~~~~~~~~~~~~~~~~~~~~~~~~
>> net/sched/act_api.c:1091:5: warning: no previous prototype for 'tcf_action_offload_cmd_post' [-Wmissing-prototypes]
1091 | int tcf_action_offload_cmd_post(struct flow_offload_action *fl_act,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~
net/sched/act_api.c:1105:5: warning: no previous prototype for 'tcf_action_offload_cmd' [-Wmissing-prototypes]
1105 | int tcf_action_offload_cmd(struct tc_action *actions[],
| ^~~~~~~~~~~~~~~~~~~~~~
>> net/sched/act_api.c:1123:5: warning: no previous prototype for 'tcf_action_offload_del_post' [-Wmissing-prototypes]
1123 | int tcf_action_offload_del_post(struct flow_offload_action *fl_act,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~
vim +/tcf_action_offload_cmd_pre +1063 net/sched/act_api.c
1062
> 1063 int tcf_action_offload_cmd_pre(struct tc_action *actions[],
1064 enum flow_act_command cmd,
1065 struct netlink_ext_ack *extack,
1066 struct flow_offload_action **fl_act)
1067 {
1068 struct flow_offload_action *fl_act_p;
1069 int err = 0;
1070
1071 fl_act_p = flow_action_alloc(tcf_act_num_actions(actions));
1072 if (!fl_act_p)
1073 return -ENOMEM;
1074
1075 fl_act_p->extack = extack;
1076 fl_act_p->command = cmd;
1077 err = tc_setup_action(&fl_act_p->action, actions);
1078 if (err) {
1079 NL_SET_ERR_MSG_MOD(extack,
1080 "Failed to setup tc actions for offload\n");
1081 goto err_out;
1082 }
1083 *fl_act = fl_act_p;
1084 return 0;
1085 err_out:
1086 kfree(fl_act_p);
1087 return err;
1088 }
1089 EXPORT_SYMBOL(tcf_action_offload_cmd_pre);
1090
> 1091 int tcf_action_offload_cmd_post(struct flow_offload_action *fl_act,
1092 struct netlink_ext_ack *extack)
1093 {
1094 if (IS_ERR(fl_act))
1095 return PTR_ERR(fl_act);
1096
1097 flow_indr_dev_setup_offload(NULL, NULL, TC_SETUP_ACT, fl_act, NULL, NULL);
1098
1099 tc_cleanup_flow_action(&fl_act->action);
1100 kfree(fl_act);
1101 return 0;
1102 }
1103
1104 /* offload the tc command after inserted */
1105 int tcf_action_offload_cmd(struct tc_action *actions[],
1106 struct netlink_ext_ack *extack)
1107 {
1108 struct flow_offload_action *fl_act;
1109 int err = 0;
1110
1111 err = tcf_action_offload_cmd_pre(actions,
1112 FLOW_ACT_REPLACE,
1113 extack,
1114 &fl_act);
1115 if (err)
1116 return err;
1117
1118 return tcf_action_offload_cmd_post(fl_act, extack);
1119 }
1120 EXPORT_SYMBOL(tcf_action_offload_cmd);
1121
1122 /* offload the tc command after deleted */
> 1123 int tcf_action_offload_del_post(struct flow_offload_action *fl_act,
1124 struct tc_action *actions[],
1125 struct netlink_ext_ack *extack,
1126 int fallback_num)
1127 {
1128 int fallback_entries = 0;
1129 struct tc_action *act;
1130 int total_entries = 0;
1131 int i;
1132
1133 if (!fl_act)
1134 return -EINVAL;
1135
1136 if (fallback_num) {
1137 /* for each the actions to fallback the action entries remain in the actions */
1138 for (i = 0; i < TCA_ACT_MAX_PRIO; i++) {
1139 act = actions[i];
1140 if (!act)
1141 continue;
1142
1143 fallback_entries += tcf_act_num_actions_single(act);
1144 }
1145 fallback_entries += fallback_num;
1146 }
1147 total_entries = fl_act->action.num_entries;
1148 if (total_entries > fallback_entries) {
1149 /* just offload the actions that is not fallback and start with the actions */
1150 fl_act->action.num_entries -= fallback_entries;
1151 flow_indr_dev_setup_offload(NULL, NULL, TC_SETUP_ACT, fl_act, NULL, NULL);
1152
1153 /* recovery num_entries for cleanup */
1154 fl_act->action.num_entries = total_entries;
1155 } else {
1156 NL_SET_ERR_MSG(extack, "no entries to offload when deleting the tc actions");
1157 }
1158
1159 tc_cleanup_flow_action(&fl_act->action);
1160
1161 kfree(fl_act);
1162 return 0;
1163 }
1164 EXPORT_SYMBOL(tcf_action_offload_del_post);
1165
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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