From: Cong Wang <xiyou.wangcong@gmail.com>
To: Po Liu <Po.Liu@nxp.com>
Cc: David Miller <davem@davemloft.net>,
LKML <linux-kernel@vger.kernel.org>,
Linux Kernel Network Developers <netdev@vger.kernel.org>,
Vinicius Costa Gomes <vinicius.gomes@intel.com>,
claudiu.manoil@nxp.com, vladimir.oltean@nxp.com,
alexandru.marginean@nxp.com, xiaoliang.yang_1@nxp.com,
roy.zang@nxp.com, mingkai.hu@nxp.com, jerry.huang@nxp.com,
leoyang.li@nxp.com, michael.chan@broadcom.com,
vishal@chelsio.com, Saeed Mahameed <saeedm@mellanox.com>,
Leon Romanovsky <leon@kernel.org>, Jiri Pirko <jiri@mellanox.com>,
Ido Schimmel <idosch@mellanox.com>,
alexandre.belloni@bootlin.com, UNGLinuxDriver@microchip.com,
Jakub Kicinski <kuba@kernel.org>,
Jamal Hadi Salim <jhs@mojatatu.com>,
John Hurley <john.hurley@netronome.com>,
Simon Horman <simon.horman@netronome.com>,
Pieter Jansen van Vuuren <pieter.jansenvanvuuren@netronome.com>,
Pablo Neira Ayuso <pablo@netfilter.org>,
moshe@mellanox.com, ivan.khoronzhuk@linaro.org,
Murali Karicheri <m-karicheri2@ti.com>,
andre.guedes@linux.intel.com,
Jakub Kicinski <jakub.kicinski@netronome.com>
Subject: Re: [RFC,net-next 2/9] net: qos: introduce a gate control flow action
Date: Fri, 13 Mar 2020 11:36:54 -0700 [thread overview]
Message-ID: <CAM_iQpW-qjM5H00sUbPhrimJ2aPDAiO=bTVuF88bCtPH=qz4gQ@mail.gmail.com> (raw)
In-Reply-To: <20200306125608.11717-3-Po.Liu@nxp.com>
On Fri, Mar 6, 2020 at 5:14 AM Po Liu <Po.Liu@nxp.com> wrote:
> +static int parse_gate_list(struct nlattr *list,
> + struct tcf_gate_params *sched,
> + struct netlink_ext_ack *extack)
> +{
> + struct nlattr *n;
> + int err, rem;
> + int i = 0;
> +
> + if (!list)
> + return -EINVAL;
> +
> + nla_for_each_nested(n, list, rem) {
> + struct tcfg_gate_entry *entry;
> +
> + if (nla_type(n) != TCA_GATE_ONE_ENTRY) {
> + NL_SET_ERR_MSG(extack, "Attribute isn't type 'entry'");
> + continue;
> + }
> +
> + entry = kzalloc(sizeof(*entry), GFP_KERNEL);
> + if (!entry) {
> + NL_SET_ERR_MSG(extack, "Not enough memory for entry");
> + return -ENOMEM;
> + }
You need to free all previous allocated entries on this list
when an error happens, right?
> +
> + err = parse_gate_entry(n, entry, i, extack);
> + if (err < 0) {
> + kfree(entry);
> + return err;
> + }
> +
> + list_add_tail(&entry->list, &sched->entries);
> + i++;
> + }
> +
> + sched->num_entries = i;
> +
> + return i;
> +}
> +
> +static int tcf_gate_init(struct net *net, struct nlattr *nla,
> + struct nlattr *est, struct tc_action **a,
> + int ovr, int bind, bool rtnl_held,
> + struct tcf_proto *tp, u32 flags,
> + struct netlink_ext_ack *extack)
> +{
> + struct tc_action_net *tn = net_generic(net, gate_net_id);
> + enum tk_offsets tk_offset = TK_OFFS_TAI;
> + struct nlattr *tb[TCA_GATE_MAX + 1];
> + struct tcf_chain *goto_ch = NULL;
> + struct tcfg_gate_entry *next;
> + struct tcf_gate_params *p;
> + struct gate_action *gact;
> + s32 clockid = CLOCK_TAI;
> + struct tc_gate *parm;
> + struct tcf_gate *g;
> + int ret = 0, err;
> + u64 basetime = 0;
> + u32 gflags = 0;
> + s32 prio = -1;
> + ktime_t start;
> + u32 index;
> +
> + if (!nla)
> + return -EINVAL;
> +
> + err = nla_parse_nested_deprecated(tb, TCA_GATE_MAX,
> + nla, gate_policy, NULL);
> + if (err < 0)
> + return err;
> +
> + if (!tb[TCA_GATE_PARMS])
> + return -EINVAL;
> + parm = nla_data(tb[TCA_GATE_PARMS]);
> + index = parm->index;
> + err = tcf_idr_check_alloc(tn, &index, a, bind);
> + if (err < 0)
> + return err;
> +
> + if (err && bind)
> + return 0;
> +
> + if (!err) {
> + ret = tcf_idr_create_from_flags(tn, index, est, a,
> + &act_gate_ops, bind, flags);
> + if (ret) {
> + tcf_idr_cleanup(tn, index);
> + return ret;
> + }
> +
> + ret = ACT_P_CREATED;
> + } else if (!ovr) {
> + tcf_idr_release(*a, bind);
> + return -EEXIST;
> + }
> +
> + if (tb[TCA_GATE_PRIORITY])
> + prio = nla_get_s32(tb[TCA_GATE_PRIORITY]);
> +
> + if (tb[TCA_GATE_BASE_TIME])
> + basetime = nla_get_u64(tb[TCA_GATE_BASE_TIME]);
> +
> + if (tb[TCA_GATE_FLAGS])
> + gflags = nla_get_u32(tb[TCA_GATE_FLAGS]);
> +
> + if (tb[TCA_GATE_CLOCKID]) {
> + clockid = nla_get_s32(tb[TCA_GATE_CLOCKID]);
> + switch (clockid) {
> + case CLOCK_REALTIME:
> + tk_offset = TK_OFFS_REAL;
> + break;
> + case CLOCK_MONOTONIC:
> + tk_offset = TK_OFFS_MAX;
> + break;
> + case CLOCK_BOOTTIME:
> + tk_offset = TK_OFFS_BOOT;
> + break;
> + case CLOCK_TAI:
> + tk_offset = TK_OFFS_TAI;
> + break;
> + default:
> + NL_SET_ERR_MSG(extack, "Invalid 'clockid'");
> + goto release_idr;
> + }
> + }
> +
> + err = tcf_action_check_ctrlact(parm->action, tp, &goto_ch, extack);
> + if (err < 0)
> + goto release_idr;
> +
> + g = to_gate(*a);
> +
> + gact = kzalloc(sizeof(*gact), GFP_KERNEL);
> + if (!gact) {
> + err = -ENOMEM;
> + goto put_chain;
> + }
> +
> + p = get_gate_param(gact);
> +
> + INIT_LIST_HEAD(&p->entries);
> + if (tb[TCA_GATE_ENTRY_LIST]) {
> + err = parse_gate_list(tb[TCA_GATE_ENTRY_LIST], p, extack);
> + if (err < 0)
> + goto release_mem;
> + }
> +
> + if (tb[TCA_GATE_CYCLE_TIME]) {
> + p->tcfg_cycletime = nla_get_u64(tb[TCA_GATE_CYCLE_TIME]);
> + } else {
> + struct tcfg_gate_entry *entry;
> + ktime_t cycle = 0;
> +
> + list_for_each_entry(entry, &p->entries, list)
> + cycle = ktime_add_ns(cycle, entry->interval);
> + p->tcfg_cycletime = cycle;
> + }
> +
> + if (tb[TCA_GATE_CYCLE_TIME_EXT])
> + p->tcfg_cycletime_ext =
> + nla_get_u64(tb[TCA_GATE_CYCLE_TIME_EXT]);
> +
> + p->tcfg_priority = prio;
> + p->tcfg_basetime = basetime;
> + p->tcfg_clockid = clockid;
> + p->tcfg_flags = gflags;
> +
> + gact->tk_offset = tk_offset;
> + spin_lock_init(&gact->entry_lock);
> + hrtimer_init(&gact->hitimer, clockid, HRTIMER_MODE_ABS);
> + gact->hitimer.function = gate_timer_func;
> +
> + err = gate_get_start_time(gact, &start);
> + if (err < 0) {
> + NL_SET_ERR_MSG(extack,
> + "Internal error: failed get start time");
> + goto release_mem;
> + }
> +
> + gact->current_close_time = start;
> + gact->current_gate_status = GATE_ACT_GATE_OPEN | GATE_ACT_PENDING;
> +
> + next = list_first_entry(&p->entries, struct tcfg_gate_entry, list);
> + rcu_assign_pointer(gact->next_entry, next);
> +
> + gate_start_timer(gact, start);
> +
> + spin_lock_bh(&g->tcf_lock);
> + goto_ch = tcf_action_set_ctrlact(*a, parm->action, goto_ch);
> + gact = rcu_replace_pointer(g->actg, gact,
> + lockdep_is_held(&g->tcf_lock));
> + spin_unlock_bh(&g->tcf_lock);
> +
> + if (goto_ch)
> + tcf_chain_put_by_act(goto_ch);
> + if (gact)
> + kfree_rcu(gact, rcu);
> +
> + if (ret == ACT_P_CREATED)
> + tcf_idr_insert(tn, *a);
> + return ret;
> +
> +release_mem:
> + kfree_rcu(gact, rcu);
No need to bother RCU for an error path, right?
Thanks.
next prev parent reply other threads:[~2020-03-13 18:37 UTC|newest]
Thread overview: 125+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-06 12:55 [RFC,net-next 0/9] Introduce a flow gate control action and apply IEEE Po Liu
2020-03-06 12:55 ` [RFC,net-next 1/9] net: qos offload add flow status with dropped count Po Liu
2020-03-06 12:56 ` [RFC,net-next 2/9] net: qos: introduce a gate control flow action Po Liu
2020-03-06 19:11 ` Jakub Kicinski
2020-03-07 6:05 ` [EXT] " Po Liu
2020-03-12 22:14 ` Vinicius Costa Gomes
2020-03-13 3:47 ` [EXT] " Po Liu
2020-03-13 18:36 ` Cong Wang [this message]
2020-03-14 4:09 ` Po Liu
2020-03-06 12:56 ` [RFC,net-next 3/9] net: schedule: add action gate offloading Po Liu
2020-03-06 19:02 ` Jakub Kicinski
2020-03-06 19:19 ` Jakub Kicinski
2020-03-07 4:38 ` [EXT] " Po Liu
2020-03-06 12:56 ` [RFC,net-next 4/9] net: enetc: add hw tc hw offload features for PSPF capability Po Liu
2020-03-06 12:56 ` [RFC,net-next 5/9] net: enetc: add tc flower psfp offload driver Po Liu
2020-03-12 22:14 ` Vinicius Costa Gomes
2020-03-13 5:59 ` [EXT] " Po Liu
2020-03-06 12:56 ` [RFC,net-next 6/9] net: qos: add tc police offloading action with max frame size limit Po Liu
2020-06-23 6:34 ` [v1,net-next 1/4] " Po Liu
2020-06-23 6:34 ` [v1,net-next 2/4] net: enetc: add support max frame size for tc flower offload Po Liu
2020-06-23 6:34 ` [v1,net-next 3/4] net: qos: police action add index for tc flower offloading Po Liu
2020-06-23 7:09 ` Ido Schimmel
2020-06-23 7:39 ` [EXT] " Po Liu
2020-06-23 10:08 ` Jamal Hadi Salim
2020-06-23 6:34 ` [v1,net-next 4/4] net: enetc add tc flower offload flow metering policing action Po Liu
2020-06-23 14:54 ` kernel test robot
2020-06-23 15:08 ` kernel test robot
2020-06-24 9:36 ` [v2,net-next 1/4] net: qos: add tc police offloading action with max frame size limit Po Liu
2020-06-24 9:36 ` [v2,net-next 2/4] net: enetc: add support max frame size for tc flower offload Po Liu
2020-06-25 5:04 ` David Miller
2020-06-24 9:36 ` [v2,net-next 3/4] net: qos: police action add index for tc flower offloading Po Liu
2020-06-25 5:04 ` David Miller
2020-06-24 9:36 ` [v2,net-next 4/4] net: enetc add tc flower offload flow metering policing action Po Liu
2020-06-25 5:04 ` David Miller
2020-06-25 5:04 ` [v2,net-next 1/4] net: qos: add tc police offloading action with max frame size limit David Miller
2020-06-23 7:01 ` [v1,net-next " Ido Schimmel
2020-03-06 12:56 ` [RFC,net-next 7/9] net: enetc: add support max frame size for tc flower offload Po Liu
2020-03-06 12:56 ` [RFC,net-next 8/9] net: qos: police action add index for tc flower offloading Po Liu
2020-06-21 10:04 ` Ido Schimmel
2020-03-06 12:56 ` [RFC,net-next 9/9] net: enetc add tc flower offload flow metering policing action Po Liu
2020-03-06 12:56 ` [RFC, iproute2-next] iproute2:tc:action: add a gate control action Po Liu
2020-03-24 3:47 ` [v1,net-next 0/5] Introduce a flow gate control action and apply IEEE Po Liu
2020-03-24 3:47 ` [v1,net-next 1/5] net: qos offload add flow status with dropped count Po Liu
2020-03-24 10:01 ` Jiri Pirko
2020-03-24 13:04 ` [EXT] " Po Liu
2020-03-24 3:47 ` [v1,net-next 2/5] net: qos: introduce a gate control flow action Po Liu
2020-03-24 10:19 ` Jiri Pirko
2020-03-24 10:28 ` [EXT] " Po Liu
2020-03-24 3:47 ` [v1,net-next 3/5] net: schedule: add action gate offloading Po Liu
2020-03-24 3:47 ` [v1,net-next 4/5] net: enetc: add hw tc hw offload features for PSPF capability Po Liu
2020-03-24 11:18 ` kbuild test robot
2020-03-24 12:14 ` Jiri Pirko
2020-03-24 3:47 ` [v1,net-next 5/5] net: enetc: add tc flower psfp offload driver Po Liu
2020-03-24 12:53 ` kbuild test robot
2020-03-24 3:47 ` [v1,iproute2 1/2] iproute2:tc:action: add a gate control action Po Liu
2020-03-24 21:59 ` Stephen Hemminger
2020-03-25 2:40 ` [EXT] " Po Liu
2020-03-24 3:47 ` [v1,iproute2 2/2] iproute2: add gate action man page Po Liu
2020-04-14 5:40 ` [v2,net-next 0/4] Introduce a flow gate control action and apply IEEE Po Liu
2020-04-14 5:40 ` [ v2,net-next 1/4] net: qos: introduce a gate control flow action Po Liu
2020-04-14 5:40 ` [ v2,net-next 2/4] net: schedule: add action gate offloading Po Liu
2020-04-14 5:40 ` [ v2,net-next 3/4] net: enetc: add hw tc hw offload features for PSPF capability Po Liu
2020-04-14 5:40 ` [ v2,net-next 4/4] net: enetc: add tc flower psfp offload driver Po Liu
2020-04-14 23:41 ` [v2,net-next 0/4] Introduce a flow gate control action and apply IEEE David Miller
2020-04-18 1:12 ` Po Liu
2020-04-18 1:12 ` [ v2,net-next 1/4] net: qos: introduce a gate control flow action Po Liu
2020-04-18 1:12 ` [ v2,net-next 2/4] net: schedule: add action gate offloading Po Liu
2020-04-18 1:12 ` [ v2,net-next 3/4] net: enetc: add hw tc hw offload features for PSPF capability Po Liu
2020-04-18 1:12 ` [ v2,net-next 4/4] net: enetc: add tc flower psfp offload driver Po Liu
2020-04-18 22:52 ` Vladimir Oltean
2020-04-19 1:44 ` [EXT] " Po Liu
2020-04-22 2:48 ` [v3,net-next 0/4] Introduce a flow gate control action and apply IEEE Po Liu
2020-04-22 2:48 ` [v3,net-next 1/4] net: qos: introduce a gate control flow action Po Liu
2020-04-22 13:23 ` Vlad Buslov
2020-04-23 3:14 ` [EXT] " Po Liu
2020-04-23 7:43 ` Vlad Buslov
2020-04-23 8:32 ` Po Liu
2020-04-23 9:15 ` Po Liu
2020-04-23 11:14 ` Vlad Buslov
2020-04-23 11:03 ` Vlad Buslov
2020-04-22 19:19 ` Allan W. Nielsen
2020-04-22 19:28 ` Vladimir Oltean
2020-04-22 20:05 ` Dave Taht
2020-04-23 3:29 ` [EXT] " Po Liu
2020-04-23 19:11 ` Allan W. Nielsen
2020-04-23 3:27 ` [EXT] " Po Liu
2020-04-23 17:38 ` Vinicius Costa Gomes
2020-04-23 19:17 ` Allan W. Nielsen
2020-04-24 3:23 ` [EXT] " Po Liu
2020-04-24 17:41 ` Vinicius Costa Gomes
2020-04-25 1:49 ` Po Liu
2020-04-22 2:48 ` [v3,net-next 2/4] net: schedule: add action gate offloading Po Liu
2020-04-22 14:14 ` Vlad Buslov
2020-04-22 2:48 ` [v3,net-next 3/4] net: enetc: add hw tc hw offload features for PSPF capability Po Liu
2020-04-22 2:48 ` [v3,net-next 4/4] net: enetc: add tc flower psfp offload driver Po Liu
2020-04-28 3:34 ` [v4,net-next 0/4] Introduce a flow gate control action and apply IEEE Po Liu
2020-04-28 3:34 ` [v4,net-next 1/4] net: qos: introduce a gate control flow action Po Liu
2020-04-29 17:04 ` Vlad Buslov
2020-04-30 0:52 ` [EXT] " Po Liu
2020-04-28 3:34 ` [v4,net-next 2/4] net: schedule: add action gate offloading Po Liu
2020-04-29 17:40 ` Vlad Buslov
2020-04-28 3:34 ` [v4,net-next 3/4] net: enetc: add hw tc hw offload features for PSPF capability Po Liu
2020-04-28 3:34 ` [v4,net-next 4/4] net: enetc: add tc flower psfp offload driver Po Liu
2020-05-01 0:53 ` [v5,net-next 0/4] Introduce a flow gate control action and apply IEEE Po Liu
2020-05-01 0:53 ` [v5,net-next 1/4] net: qos: introduce a gate control flow action Po Liu
2020-05-01 0:53 ` [v5,net-next 2/4] net: schedule: add action gate offloading Po Liu
2020-05-01 0:53 ` [v5,net-next 3/4] net: enetc: add hw tc hw offload features for PSPF capability Po Liu
2020-05-01 0:53 ` [v5,net-next 4/4] net: enetc: add tc flower psfp offload driver Po Liu
2020-05-03 6:32 ` [v3,iproute2 1/2] iproute2:tc:action: add a gate control action Po Liu
2020-05-03 6:32 ` [v3,iproute2 2/2] iproute2: add gate action man page Po Liu
2020-05-06 8:40 ` [v4,iproute2-next 1/2] iproute2-next:tc:action: add a gate control action Po Liu
2020-05-06 8:40 ` [v4,iproute2-next 2/2] iproute2-next: add gate action man page Po Liu
2020-05-08 7:02 ` [v5,iproute2-next 1/2] iproute2-next:tc:action: add a gate control action Po Liu
2020-05-08 7:02 ` [v5,iproute2-next 2/2] iproute2-next: add gate action man page Po Liu
2020-05-13 2:21 ` [v5,iproute2-next 1/2] iproute2-next:tc:action: add a gate control action David Ahern
2020-05-06 12:54 ` [v4,iproute2-next " Davide Caratti
2020-05-07 2:28 ` [EXT] " Po Liu
2020-05-06 15:21 ` Stephen Hemminger
2020-05-05 0:05 ` [v3,iproute2 1/2] iproute2:tc:action: " Stephen Hemminger
2020-05-05 0:06 ` Stephen Hemminger
2020-05-01 23:08 ` [v5,net-next 0/4] Introduce a flow gate control action and apply IEEE David Miller
2020-06-19 6:01 ` [v2,net-next] net: qos offload add flow status with dropped count Po Liu
2020-06-19 7:03 ` Simon Horman
2020-06-19 18:00 ` Vlad Buslov
2020-06-19 19:54 ` David Miller
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