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-rw-r--r--net/sched/act_tunnel_key.c36
-rw-r--r--net/sched/cls_api.c41
-rw-r--r--net/sched/cls_flower.c134
-rw-r--r--net/sched/sch_api.c2
-rw-r--r--net/sched/sch_cake.c112
-rw-r--r--net/sched/sch_cbs.c20
-rw-r--r--net/sched/sch_choke.c21
-rw-r--r--net/sched/sch_codel.c29
-rw-r--r--net/sched/sch_etf.c10
-rw-r--r--net/sched/sch_ets.c25
-rw-r--r--net/sched/sch_fifo.c13
-rw-r--r--net/sched/sch_fq.c108
-rw-r--r--net/sched/sch_fq_codel.c57
-rw-r--r--net/sched/sch_fq_pie.c61
-rw-r--r--net/sched/sch_generic.c11
-rw-r--r--net/sched/sch_hfsc.c9
-rw-r--r--net/sched/sch_hhf.c35
-rw-r--r--net/sched/sch_mqprio.c6
-rw-r--r--net/sched/sch_pie.c39
-rw-r--r--net/sched/sch_sfq.c13
-rw-r--r--net/sched/sch_skbprio.c8
-rw-r--r--net/sched/sch_taprio.c5
-rw-r--r--net/sched/sch_teql.c4
23 files changed, 520 insertions, 279 deletions
diff --git a/net/sched/act_tunnel_key.c b/net/sched/act_tunnel_key.c
index 1536f8b16f..af7c998459 100644
--- a/net/sched/act_tunnel_key.c
+++ b/net/sched/act_tunnel_key.c
@@ -230,7 +230,7 @@ static int tunnel_key_copy_opts(const struct nlattr *nla, u8 *dst,
nla_for_each_attr(attr, head, len, rem) {
switch (nla_type(attr)) {
case TCA_TUNNEL_KEY_ENC_OPTS_GENEVE:
- if (type && type != TUNNEL_GENEVE_OPT) {
+ if (type && type != IP_TUNNEL_GENEVE_OPT_BIT) {
NL_SET_ERR_MSG(extack, "Duplicate type for geneve options");
return -EINVAL;
}
@@ -247,7 +247,7 @@ static int tunnel_key_copy_opts(const struct nlattr *nla, u8 *dst,
dst_len -= opt_len;
dst += opt_len;
}
- type = TUNNEL_GENEVE_OPT;
+ type = IP_TUNNEL_GENEVE_OPT_BIT;
break;
case TCA_TUNNEL_KEY_ENC_OPTS_VXLAN:
if (type) {
@@ -259,7 +259,7 @@ static int tunnel_key_copy_opts(const struct nlattr *nla, u8 *dst,
if (opt_len < 0)
return opt_len;
opts_len += opt_len;
- type = TUNNEL_VXLAN_OPT;
+ type = IP_TUNNEL_VXLAN_OPT_BIT;
break;
case TCA_TUNNEL_KEY_ENC_OPTS_ERSPAN:
if (type) {
@@ -271,7 +271,7 @@ static int tunnel_key_copy_opts(const struct nlattr *nla, u8 *dst,
if (opt_len < 0)
return opt_len;
opts_len += opt_len;
- type = TUNNEL_ERSPAN_OPT;
+ type = IP_TUNNEL_ERSPAN_OPT_BIT;
break;
}
}
@@ -302,7 +302,7 @@ static int tunnel_key_opts_set(struct nlattr *nla, struct ip_tunnel_info *info,
switch (nla_type(nla_data(nla))) {
case TCA_TUNNEL_KEY_ENC_OPTS_GENEVE:
#if IS_ENABLED(CONFIG_INET)
- info->key.tun_flags |= TUNNEL_GENEVE_OPT;
+ __set_bit(IP_TUNNEL_GENEVE_OPT_BIT, info->key.tun_flags);
return tunnel_key_copy_opts(nla, ip_tunnel_info_opts(info),
opts_len, extack);
#else
@@ -310,7 +310,7 @@ static int tunnel_key_opts_set(struct nlattr *nla, struct ip_tunnel_info *info,
#endif
case TCA_TUNNEL_KEY_ENC_OPTS_VXLAN:
#if IS_ENABLED(CONFIG_INET)
- info->key.tun_flags |= TUNNEL_VXLAN_OPT;
+ __set_bit(IP_TUNNEL_VXLAN_OPT_BIT, info->key.tun_flags);
return tunnel_key_copy_opts(nla, ip_tunnel_info_opts(info),
opts_len, extack);
#else
@@ -318,7 +318,7 @@ static int tunnel_key_opts_set(struct nlattr *nla, struct ip_tunnel_info *info,
#endif
case TCA_TUNNEL_KEY_ENC_OPTS_ERSPAN:
#if IS_ENABLED(CONFIG_INET)
- info->key.tun_flags |= TUNNEL_ERSPAN_OPT;
+ __set_bit(IP_TUNNEL_ERSPAN_OPT_BIT, info->key.tun_flags);
return tunnel_key_copy_opts(nla, ip_tunnel_info_opts(info),
opts_len, extack);
#else
@@ -363,6 +363,7 @@ static int tunnel_key_init(struct net *net, struct nlattr *nla,
bool bind = act_flags & TCA_ACT_FLAGS_BIND;
struct nlattr *tb[TCA_TUNNEL_KEY_MAX + 1];
struct tcf_tunnel_key_params *params_new;
+ IP_TUNNEL_DECLARE_FLAGS(flags) = { };
struct metadata_dst *metadata = NULL;
struct tcf_chain *goto_ch = NULL;
struct tc_tunnel_key *parm;
@@ -371,7 +372,6 @@ static int tunnel_key_init(struct net *net, struct nlattr *nla,
__be16 dst_port = 0;
__be64 key_id = 0;
int opts_len = 0;
- __be16 flags = 0;
u8 tos, ttl;
int ret = 0;
u32 index;
@@ -412,16 +412,16 @@ static int tunnel_key_init(struct net *net, struct nlattr *nla,
key32 = nla_get_be32(tb[TCA_TUNNEL_KEY_ENC_KEY_ID]);
key_id = key32_to_tunnel_id(key32);
- flags = TUNNEL_KEY;
+ __set_bit(IP_TUNNEL_KEY_BIT, flags);
}
- flags |= TUNNEL_CSUM;
+ __set_bit(IP_TUNNEL_CSUM_BIT, flags);
if (tb[TCA_TUNNEL_KEY_NO_CSUM] &&
nla_get_u8(tb[TCA_TUNNEL_KEY_NO_CSUM]))
- flags &= ~TUNNEL_CSUM;
+ __clear_bit(IP_TUNNEL_CSUM_BIT, flags);
if (nla_get_flag(tb[TCA_TUNNEL_KEY_NO_FRAG]))
- flags |= TUNNEL_DONT_FRAGMENT;
+ __set_bit(IP_TUNNEL_DONT_FRAGMENT_BIT, flags);
if (tb[TCA_TUNNEL_KEY_ENC_DST_PORT])
dst_port = nla_get_be16(tb[TCA_TUNNEL_KEY_ENC_DST_PORT]);
@@ -663,15 +663,15 @@ static int tunnel_key_opts_dump(struct sk_buff *skb,
if (!start)
return -EMSGSIZE;
- if (info->key.tun_flags & TUNNEL_GENEVE_OPT) {
+ if (test_bit(IP_TUNNEL_GENEVE_OPT_BIT, info->key.tun_flags)) {
err = tunnel_key_geneve_opts_dump(skb, info);
if (err)
goto err_out;
- } else if (info->key.tun_flags & TUNNEL_VXLAN_OPT) {
+ } else if (test_bit(IP_TUNNEL_VXLAN_OPT_BIT, info->key.tun_flags)) {
err = tunnel_key_vxlan_opts_dump(skb, info);
if (err)
goto err_out;
- } else if (info->key.tun_flags & TUNNEL_ERSPAN_OPT) {
+ } else if (test_bit(IP_TUNNEL_ERSPAN_OPT_BIT, info->key.tun_flags)) {
err = tunnel_key_erspan_opts_dump(skb, info);
if (err)
goto err_out;
@@ -741,7 +741,7 @@ static int tunnel_key_dump(struct sk_buff *skb, struct tc_action *a,
struct ip_tunnel_key *key = &info->key;
__be32 key_id = tunnel_id_to_key32(key->tun_id);
- if (((key->tun_flags & TUNNEL_KEY) &&
+ if ((test_bit(IP_TUNNEL_KEY_BIT, key->tun_flags) &&
nla_put_be32(skb, TCA_TUNNEL_KEY_ENC_KEY_ID, key_id)) ||
tunnel_key_dump_addresses(skb,
&params->tcft_enc_metadata->u.tun_info) ||
@@ -749,8 +749,8 @@ static int tunnel_key_dump(struct sk_buff *skb, struct tc_action *a,
nla_put_be16(skb, TCA_TUNNEL_KEY_ENC_DST_PORT,
key->tp_dst)) ||
nla_put_u8(skb, TCA_TUNNEL_KEY_NO_CSUM,
- !(key->tun_flags & TUNNEL_CSUM)) ||
- ((key->tun_flags & TUNNEL_DONT_FRAGMENT) &&
+ !test_bit(IP_TUNNEL_CSUM_BIT, key->tun_flags)) ||
+ (test_bit(IP_TUNNEL_DONT_FRAGMENT_BIT, key->tun_flags) &&
nla_put_flag(skb, TCA_TUNNEL_KEY_NO_FRAG)) ||
tunnel_key_opts_dump(skb, info))
goto nla_put_failure;
diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c
index ca5676b266..17d97bbe89 100644
--- a/net/sched/cls_api.c
+++ b/net/sched/cls_api.c
@@ -410,12 +410,48 @@ static void tcf_proto_get(struct tcf_proto *tp)
refcount_inc(&tp->refcnt);
}
+static void tcf_maintain_bypass(struct tcf_block *block)
+{
+ int filtercnt = atomic_read(&block->filtercnt);
+ int skipswcnt = atomic_read(&block->skipswcnt);
+ bool bypass_wanted = filtercnt > 0 && filtercnt == skipswcnt;
+
+ if (bypass_wanted != block->bypass_wanted) {
+#ifdef CONFIG_NET_CLS_ACT
+ if (bypass_wanted)
+ static_branch_inc(&tcf_bypass_check_needed_key);
+ else
+ static_branch_dec(&tcf_bypass_check_needed_key);
+#endif
+ block->bypass_wanted = bypass_wanted;
+ }
+}
+
+static void tcf_block_filter_cnt_update(struct tcf_block *block, bool *counted, bool add)
+{
+ lockdep_assert_not_held(&block->cb_lock);
+
+ down_write(&block->cb_lock);
+ if (*counted != add) {
+ if (add) {
+ atomic_inc(&block->filtercnt);
+ *counted = true;
+ } else {
+ atomic_dec(&block->filtercnt);
+ *counted = false;
+ }
+ }
+ tcf_maintain_bypass(block);
+ up_write(&block->cb_lock);
+}
+
static void tcf_chain_put(struct tcf_chain *chain);
static void tcf_proto_destroy(struct tcf_proto *tp, bool rtnl_held,
bool sig_destroy, struct netlink_ext_ack *extack)
{
tp->ops->destroy(tp, rtnl_held, extack);
+ tcf_block_filter_cnt_update(tp->chain->block, &tp->counted, false);
if (sig_destroy)
tcf_proto_signal_destroyed(tp->chain, tp);
tcf_chain_put(tp->chain);
@@ -2367,6 +2403,7 @@ replay:
tfilter_notify(net, skb, n, tp, block, q, parent, fh,
RTM_NEWTFILTER, false, rtnl_held, extack);
tfilter_put(tp, fh);
+ tcf_block_filter_cnt_update(block, &tp->counted, true);
/* q pointer is NULL for shared blocks */
if (q)
q->flags &= ~TCQ_F_CAN_BYPASS;
@@ -3483,6 +3520,8 @@ static void tcf_block_offload_inc(struct tcf_block *block, u32 *flags)
if (*flags & TCA_CLS_FLAGS_IN_HW)
return;
*flags |= TCA_CLS_FLAGS_IN_HW;
+ if (tc_skip_sw(*flags))
+ atomic_inc(&block->skipswcnt);
atomic_inc(&block->offloadcnt);
}
@@ -3491,6 +3530,8 @@ static void tcf_block_offload_dec(struct tcf_block *block, u32 *flags)
if (!(*flags & TCA_CLS_FLAGS_IN_HW))
return;
*flags &= ~TCA_CLS_FLAGS_IN_HW;
+ if (tc_skip_sw(*flags))
+ atomic_dec(&block->skipswcnt);
atomic_dec(&block->offloadcnt);
}
diff --git a/net/sched/cls_flower.c b/net/sched/cls_flower.c
index e1314674b4..fd9a6f20b6 100644
--- a/net/sched/cls_flower.c
+++ b/net/sched/cls_flower.c
@@ -28,6 +28,7 @@
#include <net/vxlan.h>
#include <net/erspan.h>
#include <net/gtp.h>
+#include <net/pfcp.h>
#include <net/tc_wrapper.h>
#include <net/dst.h>
@@ -741,6 +742,7 @@ enc_opts_policy[TCA_FLOWER_KEY_ENC_OPTS_MAX + 1] = {
[TCA_FLOWER_KEY_ENC_OPTS_VXLAN] = { .type = NLA_NESTED },
[TCA_FLOWER_KEY_ENC_OPTS_ERSPAN] = { .type = NLA_NESTED },
[TCA_FLOWER_KEY_ENC_OPTS_GTP] = { .type = NLA_NESTED },
+ [TCA_FLOWER_KEY_ENC_OPTS_PFCP] = { .type = NLA_NESTED },
};
static const struct nla_policy
@@ -771,6 +773,12 @@ gtp_opt_policy[TCA_FLOWER_KEY_ENC_OPT_GTP_MAX + 1] = {
};
static const struct nla_policy
+pfcp_opt_policy[TCA_FLOWER_KEY_ENC_OPT_PFCP_MAX + 1] = {
+ [TCA_FLOWER_KEY_ENC_OPT_PFCP_TYPE] = { .type = NLA_U8 },
+ [TCA_FLOWER_KEY_ENC_OPT_PFCP_SEID] = { .type = NLA_U64 },
+};
+
+static const struct nla_policy
mpls_stack_entry_policy[TCA_FLOWER_KEY_MPLS_OPT_LSE_MAX + 1] = {
[TCA_FLOWER_KEY_MPLS_OPT_LSE_DEPTH] = { .type = NLA_U8 },
[TCA_FLOWER_KEY_MPLS_OPT_LSE_TTL] = { .type = NLA_U8 },
@@ -1419,6 +1427,44 @@ static int fl_set_gtp_opt(const struct nlattr *nla, struct fl_flow_key *key,
return sizeof(*sinfo);
}
+static int fl_set_pfcp_opt(const struct nlattr *nla, struct fl_flow_key *key,
+ int depth, int option_len,
+ struct netlink_ext_ack *extack)
+{
+ struct nlattr *tb[TCA_FLOWER_KEY_ENC_OPT_PFCP_MAX + 1];
+ struct pfcp_metadata *md;
+ int err;
+
+ md = (struct pfcp_metadata *)&key->enc_opts.data[key->enc_opts.len];
+ memset(md, 0xff, sizeof(*md));
+
+ if (!depth)
+ return sizeof(*md);
+
+ if (nla_type(nla) != TCA_FLOWER_KEY_ENC_OPTS_PFCP) {
+ NL_SET_ERR_MSG_MOD(extack, "Non-pfcp option type for mask");
+ return -EINVAL;
+ }
+
+ err = nla_parse_nested(tb, TCA_FLOWER_KEY_ENC_OPT_PFCP_MAX, nla,
+ pfcp_opt_policy, extack);
+ if (err < 0)
+ return err;
+
+ if (!option_len && !tb[TCA_FLOWER_KEY_ENC_OPT_PFCP_TYPE]) {
+ NL_SET_ERR_MSG_MOD(extack, "Missing tunnel key pfcp option type");
+ return -EINVAL;
+ }
+
+ if (tb[TCA_FLOWER_KEY_ENC_OPT_PFCP_TYPE])
+ md->type = nla_get_u8(tb[TCA_FLOWER_KEY_ENC_OPT_PFCP_TYPE]);
+
+ if (tb[TCA_FLOWER_KEY_ENC_OPT_PFCP_SEID])
+ md->seid = nla_get_be64(tb[TCA_FLOWER_KEY_ENC_OPT_PFCP_SEID]);
+
+ return sizeof(*md);
+}
+
static int fl_set_enc_opt(struct nlattr **tb, struct fl_flow_key *key,
struct fl_flow_key *mask,
struct netlink_ext_ack *extack)
@@ -1454,12 +1500,13 @@ static int fl_set_enc_opt(struct nlattr **tb, struct fl_flow_key *key,
switch (nla_type(nla_opt_key)) {
case TCA_FLOWER_KEY_ENC_OPTS_GENEVE:
if (key->enc_opts.dst_opt_type &&
- key->enc_opts.dst_opt_type != TUNNEL_GENEVE_OPT) {
+ key->enc_opts.dst_opt_type !=
+ IP_TUNNEL_GENEVE_OPT_BIT) {
NL_SET_ERR_MSG(extack, "Duplicate type for geneve options");
return -EINVAL;
}
option_len = 0;
- key->enc_opts.dst_opt_type = TUNNEL_GENEVE_OPT;
+ key->enc_opts.dst_opt_type = IP_TUNNEL_GENEVE_OPT_BIT;
option_len = fl_set_geneve_opt(nla_opt_key, key,
key_depth, option_len,
extack);
@@ -1470,7 +1517,7 @@ static int fl_set_enc_opt(struct nlattr **tb, struct fl_flow_key *key,
/* At the same time we need to parse through the mask
* in order to verify exact and mask attribute lengths.
*/
- mask->enc_opts.dst_opt_type = TUNNEL_GENEVE_OPT;
+ mask->enc_opts.dst_opt_type = IP_TUNNEL_GENEVE_OPT_BIT;
option_len = fl_set_geneve_opt(nla_opt_msk, mask,
msk_depth, option_len,
extack);
@@ -1489,7 +1536,7 @@ static int fl_set_enc_opt(struct nlattr **tb, struct fl_flow_key *key,
return -EINVAL;
}
option_len = 0;
- key->enc_opts.dst_opt_type = TUNNEL_VXLAN_OPT;
+ key->enc_opts.dst_opt_type = IP_TUNNEL_VXLAN_OPT_BIT;
option_len = fl_set_vxlan_opt(nla_opt_key, key,
key_depth, option_len,
extack);
@@ -1500,7 +1547,7 @@ static int fl_set_enc_opt(struct nlattr **tb, struct fl_flow_key *key,
/* At the same time we need to parse through the mask
* in order to verify exact and mask attribute lengths.
*/
- mask->enc_opts.dst_opt_type = TUNNEL_VXLAN_OPT;
+ mask->enc_opts.dst_opt_type = IP_TUNNEL_VXLAN_OPT_BIT;
option_len = fl_set_vxlan_opt(nla_opt_msk, mask,
msk_depth, option_len,
extack);
@@ -1519,7 +1566,7 @@ static int fl_set_enc_opt(struct nlattr **tb, struct fl_flow_key *key,
return -EINVAL;
}
option_len = 0;
- key->enc_opts.dst_opt_type = TUNNEL_ERSPAN_OPT;
+ key->enc_opts.dst_opt_type = IP_TUNNEL_ERSPAN_OPT_BIT;
option_len = fl_set_erspan_opt(nla_opt_key, key,
key_depth, option_len,
extack);
@@ -1530,7 +1577,7 @@ static int fl_set_enc_opt(struct nlattr **tb, struct fl_flow_key *key,
/* At the same time we need to parse through the mask
* in order to verify exact and mask attribute lengths.
*/
- mask->enc_opts.dst_opt_type = TUNNEL_ERSPAN_OPT;
+ mask->enc_opts.dst_opt_type = IP_TUNNEL_ERSPAN_OPT_BIT;
option_len = fl_set_erspan_opt(nla_opt_msk, mask,
msk_depth, option_len,
extack);
@@ -1550,7 +1597,7 @@ static int fl_set_enc_opt(struct nlattr **tb, struct fl_flow_key *key,
return -EINVAL;
}
option_len = 0;
- key->enc_opts.dst_opt_type = TUNNEL_GTP_OPT;
+ key->enc_opts.dst_opt_type = IP_TUNNEL_GTP_OPT_BIT;
option_len = fl_set_gtp_opt(nla_opt_key, key,
key_depth, option_len,
extack);
@@ -1561,7 +1608,7 @@ static int fl_set_enc_opt(struct nlattr **tb, struct fl_flow_key *key,
/* At the same time we need to parse through the mask
* in order to verify exact and mask attribute lengths.
*/
- mask->enc_opts.dst_opt_type = TUNNEL_GTP_OPT;
+ mask->enc_opts.dst_opt_type = IP_TUNNEL_GTP_OPT_BIT;
option_len = fl_set_gtp_opt(nla_opt_msk, mask,
msk_depth, option_len,
extack);
@@ -1575,6 +1622,36 @@ static int fl_set_enc_opt(struct nlattr **tb, struct fl_flow_key *key,
return -EINVAL;
}
break;
+ case TCA_FLOWER_KEY_ENC_OPTS_PFCP:
+ if (key->enc_opts.dst_opt_type) {
+ NL_SET_ERR_MSG_MOD(extack, "Duplicate type for pfcp options");
+ return -EINVAL;
+ }
+ option_len = 0;
+ key->enc_opts.dst_opt_type = IP_TUNNEL_PFCP_OPT_BIT;
+ option_len = fl_set_pfcp_opt(nla_opt_key, key,
+ key_depth, option_len,
+ extack);
+ if (option_len < 0)
+ return option_len;
+
+ key->enc_opts.len += option_len;
+ /* At the same time we need to parse through the mask
+ * in order to verify exact and mask attribute lengths.
+ */
+ mask->enc_opts.dst_opt_type = IP_TUNNEL_PFCP_OPT_BIT;
+ option_len = fl_set_pfcp_opt(nla_opt_msk, mask,
+ msk_depth, option_len,
+ extack);
+ if (option_len < 0)
+ return option_len;
+
+ mask->enc_opts.len += option_len;
+ if (key->enc_opts.len != mask->enc_opts.len) {
+ NL_SET_ERR_MSG_MOD(extack, "Key and mask miss aligned");
+ return -EINVAL;
+ }
+ break;
default:
NL_SET_ERR_MSG(extack, "Unknown tunnel option type");
return -EINVAL;
@@ -3117,6 +3194,32 @@ nla_put_failure:
return -EMSGSIZE;
}
+static int fl_dump_key_pfcp_opt(struct sk_buff *skb,
+ struct flow_dissector_key_enc_opts *enc_opts)
+{
+ struct pfcp_metadata *md;
+ struct nlattr *nest;
+
+ nest = nla_nest_start_noflag(skb, TCA_FLOWER_KEY_ENC_OPTS_PFCP);
+ if (!nest)
+ goto nla_put_failure;
+
+ md = (struct pfcp_metadata *)&enc_opts->data[0];
+ if (nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_PFCP_TYPE, md->type))
+ goto nla_put_failure;
+
+ if (nla_put_be64(skb, TCA_FLOWER_KEY_ENC_OPT_PFCP_SEID,
+ md->seid, 0))
+ goto nla_put_failure;
+
+ nla_nest_end(skb, nest);
+ return 0;
+
+nla_put_failure:
+ nla_nest_cancel(skb, nest);
+ return -EMSGSIZE;
+}
+
static int fl_dump_key_ct(struct sk_buff *skb,
struct flow_dissector_key_ct *key,
struct flow_dissector_key_ct *mask)
@@ -3202,26 +3305,31 @@ static int fl_dump_key_options(struct sk_buff *skb, int enc_opt_type,
goto nla_put_failure;
switch (enc_opts->dst_opt_type) {
- case TUNNEL_GENEVE_OPT:
+ case IP_TUNNEL_GENEVE_OPT_BIT:
err = fl_dump_key_geneve_opt(skb, enc_opts);
if (err)
goto nla_put_failure;
break;
- case TUNNEL_VXLAN_OPT:
+ case IP_TUNNEL_VXLAN_OPT_BIT:
err = fl_dump_key_vxlan_opt(skb, enc_opts);
if (err)
goto nla_put_failure;
break;
- case TUNNEL_ERSPAN_OPT:
+ case IP_TUNNEL_ERSPAN_OPT_BIT:
err = fl_dump_key_erspan_opt(skb, enc_opts);
if (err)
goto nla_put_failure;
break;
- case TUNNEL_GTP_OPT:
+ case IP_TUNNEL_GTP_OPT_BIT:
err = fl_dump_key_gtp_opt(skb, enc_opts);
if (err)
goto nla_put_failure;
break;
+ case IP_TUNNEL_PFCP_OPT_BIT:
+ err = fl_dump_key_pfcp_opt(skb, enc_opts);
+ if (err)
+ goto nla_put_failure;
+ break;
default:
goto nla_put_failure;
}
diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c
index 6292d6d73b..74afc21052 100644
--- a/net/sched/sch_api.c
+++ b/net/sched/sch_api.c
@@ -1334,7 +1334,7 @@ static struct Qdisc *qdisc_create(struct net_device *dev,
* before again attaching a qdisc.
*/
if ((dev->priv_flags & IFF_NO_QUEUE) && (dev->tx_queue_len == 0)) {
- dev->tx_queue_len = DEFAULT_TX_QUEUE_LEN;
+ WRITE_ONCE(dev->tx_queue_len, DEFAULT_TX_QUEUE_LEN);
netdev_info(dev, "Caught tx_queue_len zero misconfig\n");
}
diff --git a/net/sched/sch_cake.c b/net/sched/sch_cake.c
index edee926ccd..9602dafe32 100644
--- a/net/sched/sch_cake.c
+++ b/net/sched/sch_cake.c
@@ -1512,7 +1512,7 @@ static unsigned int cake_drop(struct Qdisc *sch, struct sk_buff **to_free)
if (!q->overflow_timeout) {
int i;
/* Build fresh max-heap */
- for (i = CAKE_MAX_TINS * CAKE_QUEUES / 2; i >= 0; i--)
+ for (i = CAKE_MAX_TINS * CAKE_QUEUES / 2 - 1; i >= 0; i--)
cake_heapify(q, i);
}
q->overflow_timeout = 65535;
@@ -2572,6 +2572,8 @@ static int cake_change(struct Qdisc *sch, struct nlattr *opt,
{
struct cake_sched_data *q = qdisc_priv(sch);
struct nlattr *tb[TCA_CAKE_MAX + 1];
+ u16 rate_flags;
+ u8 flow_mode;
int err;
err = nla_parse_nested_deprecated(tb, TCA_CAKE_MAX, opt, cake_policy,
@@ -2579,10 +2581,11 @@ static int cake_change(struct Qdisc *sch, struct nlattr *opt,
if (err < 0)
return err;
+ flow_mode = q->flow_mode;
if (tb[TCA_CAKE_NAT]) {
#if IS_ENABLED(CONFIG_NF_CONNTRACK)
- q->flow_mode &= ~CAKE_FLOW_NAT_FLAG;
- q->flow_mode |= CAKE_FLOW_NAT_FLAG *
+ flow_mode &= ~CAKE_FLOW_NAT_FLAG;
+ flow_mode |= CAKE_FLOW_NAT_FLAG *
!!nla_get_u32(tb[TCA_CAKE_NAT]);
#else
NL_SET_ERR_MSG_ATTR(extack, tb[TCA_CAKE_NAT],
@@ -2592,29 +2595,34 @@ static int cake_change(struct Qdisc *sch, struct nlattr *opt,
}
if (tb[TCA_CAKE_BASE_RATE64])
- q->rate_bps = nla_get_u64(tb[TCA_CAKE_BASE_RATE64]);
+ WRITE_ONCE(q->rate_bps,
+ nla_get_u64(tb[TCA_CAKE_BASE_RATE64]));
if (tb[TCA_CAKE_DIFFSERV_MODE])
- q->tin_mode = nla_get_u32(tb[TCA_CAKE_DIFFSERV_MODE]);
+ WRITE_ONCE(q->tin_mode,
+ nla_get_u32(tb[TCA_CAKE_DIFFSERV_MODE]));
+ rate_flags = q->rate_flags;
if (tb[TCA_CAKE_WASH]) {
if (!!nla_get_u32(tb[TCA_CAKE_WASH]))
- q->rate_flags |= CAKE_FLAG_WASH;
+ rate_flags |= CAKE_FLAG_WASH;
else
- q->rate_flags &= ~CAKE_FLAG_WASH;
+ rate_flags &= ~CAKE_FLAG_WASH;
}
if (tb[TCA_CAKE_FLOW_MODE])
- q->flow_mode = ((q->flow_mode & CAKE_FLOW_NAT_FLAG) |
+ flow_mode = ((flow_mode & CAKE_FLOW_NAT_FLAG) |
(nla_get_u32(tb[TCA_CAKE_FLOW_MODE]) &
CAKE_FLOW_MASK));
if (tb[TCA_CAKE_ATM])
- q->atm_mode = nla_get_u32(tb[TCA_CAKE_ATM]);
+ WRITE_ONCE(q->atm_mode,
+ nla_get_u32(tb[TCA_CAKE_ATM]));
if (tb[TCA_CAKE_OVERHEAD]) {
- q->rate_overhead = nla_get_s32(tb[TCA_CAKE_OVERHEAD]);
- q->rate_flags |= CAKE_FLAG_OVERHEAD;
+ WRITE_ONCE(q->rate_overhead,
+ nla_get_s32(tb[TCA_CAKE_OVERHEAD]));
+ rate_flags |= CAKE_FLAG_OVERHEAD;
q->max_netlen = 0;
q->max_adjlen = 0;
@@ -2623,7 +2631,7 @@ static int cake_change(struct Qdisc *sch, struct nlattr *opt,
}
if (tb[TCA_CAKE_RAW]) {
- q->rate_flags &= ~CAKE_FLAG_OVERHEAD;
+ rate_flags &= ~CAKE_FLAG_OVERHEAD;
q->max_netlen = 0;
q->max_adjlen = 0;
@@ -2632,54 +2640,58 @@ static int cake_change(struct Qdisc *sch, struct nlattr *opt,
}
if (tb[TCA_CAKE_MPU])
- q->rate_mpu = nla_get_u32(tb[TCA_CAKE_MPU]);
+ WRITE_ONCE(q->rate_mpu,
+ nla_get_u32(tb[TCA_CAKE_MPU]));
if (tb[TCA_CAKE_RTT]) {
- q->interval = nla_get_u32(tb[TCA_CAKE_RTT]);
+ u32 interval = nla_get_u32(tb[TCA_CAKE_RTT]);
- if (!q->interval)
- q->interval = 1;
+ WRITE_ONCE(q->interval, max(interval, 1U));
}
if (tb[TCA_CAKE_TARGET]) {
- q->target = nla_get_u32(tb[TCA_CAKE_TARGET]);
+ u32 target = nla_get_u32(tb[TCA_CAKE_TARGET]);
- if (!q->target)
- q->target = 1;
+ WRITE_ONCE(q->target, max(target, 1U));
}
if (tb[TCA_CAKE_AUTORATE]) {
if (!!nla_get_u32(tb[TCA_CAKE_AUTORATE]))
- q->rate_flags |= CAKE_FLAG_AUTORATE_INGRESS;
+ rate_flags |= CAKE_FLAG_AUTORATE_INGRESS;
else
- q->rate_flags &= ~CAKE_FLAG_AUTORATE_INGRESS;
+ rate_flags &= ~CAKE_FLAG_AUTORATE_INGRESS;
}
if (tb[TCA_CAKE_INGRESS]) {
if (!!nla_get_u32(tb[TCA_CAKE_INGRESS]))
- q->rate_flags |= CAKE_FLAG_INGRESS;
+ rate_flags |= CAKE_FLAG_INGRESS;
else
- q->rate_flags &= ~CAKE_FLAG_INGRESS;
+ rate_flags &= ~CAKE_FLAG_INGRESS;
}
if (tb[TCA_CAKE_ACK_FILTER])
- q->ack_filter = nla_get_u32(tb[TCA_CAKE_ACK_FILTER]);
+ WRITE_ONCE(q->ack_filter,
+ nla_get_u32(tb[TCA_CAKE_ACK_FILTER]));
if (tb[TCA_CAKE_MEMORY])
- q->buffer_config_limit = nla_get_u32(tb[TCA_CAKE_MEMORY]);
+ WRITE_ONCE(q->buffer_config_limit,
+ nla_get_u32(tb[TCA_CAKE_MEMORY]));
if (tb[TCA_CAKE_SPLIT_GSO]) {
if (!!nla_get_u32(tb[TCA_CAKE_SPLIT_GSO]))
- q->rate_flags |= CAKE_FLAG_SPLIT_GSO;
+ rate_flags |= CAKE_FLAG_SPLIT_GSO;
else
- q->rate_flags &= ~CAKE_FLAG_SPLIT_GSO;
+ rate_flags &= ~CAKE_FLAG_SPLIT_GSO;
}
if (tb[TCA_CAKE_FWMARK]) {
- q->fwmark_mask = nla_get_u32(tb[TCA_CAKE_FWMARK]);
- q->fwmark_shft = q->fwmark_mask ? __ffs(q->fwmark_mask) : 0;
+ WRITE_ONCE(q->fwmark_mask, nla_get_u32(tb[TCA_CAKE_FWMARK]));
+ WRITE_ONCE(q->fwmark_shft,
+ q->fwmark_mask ? __ffs(q->fwmark_mask) : 0);
}
+ WRITE_ONCE(q->rate_flags, rate_flags);
+ WRITE_ONCE(q->flow_mode, flow_mode);
if (q->tins) {
sch_tree_lock(sch);
cake_reconfigure(sch);
@@ -2774,68 +2786,72 @@ static int cake_dump(struct Qdisc *sch, struct sk_buff *skb)
{
struct cake_sched_data *q = qdisc_priv(sch);
struct nlattr *opts;
+ u16 rate_flags;
+ u8 flow_mode;
opts = nla_nest_start_noflag(skb, TCA_OPTIONS);
if (!opts)
goto nla_put_failure;
- if (nla_put_u64_64bit(skb, TCA_CAKE_BASE_RATE64, q->rate_bps,
- TCA_CAKE_PAD))
+ if (nla_put_u64_64bit(skb, TCA_CAKE_BASE_RATE64,
+ READ_ONCE(q->rate_bps), TCA_CAKE_PAD))
goto nla_put_failure;
- if (nla_put_u32(skb, TCA_CAKE_FLOW_MODE,
- q->flow_mode & CAKE_FLOW_MASK))
+ flow_mode = READ_ONCE(q->flow_mode);
+ if (nla_put_u32(skb, TCA_CAKE_FLOW_MODE, flow_mode & CAKE_FLOW_MASK))
goto nla_put_failure;
- if (nla_put_u32(skb, TCA_CAKE_RTT, q->interval))
+ if (nla_put_u32(skb, TCA_CAKE_RTT, READ_ONCE(q->interval)))
goto nla_put_failure;
- if (nla_put_u32(skb, TCA_CAKE_TARGET, q->target))
+ if (nla_put_u32(skb, TCA_CAKE_TARGET, READ_ONCE(q->target)))
goto nla_put_failure;
- if (nla_put_u32(skb, TCA_CAKE_MEMORY, q->buffer_config_limit))
+ if (nla_put_u32(skb, TCA_CAKE_MEMORY,
+ READ_ONCE(q->buffer_config_limit)))
goto nla_put_failure;
+ rate_flags = READ_ONCE(q->rate_flags);
if (nla_put_u32(skb, TCA_CAKE_AUTORATE,
- !!(q->rate_flags & CAKE_FLAG_AUTORATE_INGRESS)))
+ !!(rate_flags & CAKE_FLAG_AUTORATE_INGRESS)))
goto nla_put_failure;
if (nla_put_u32(skb, TCA_CAKE_INGRESS,
- !!(q->rate_flags & CAKE_FLAG_INGRESS)))
+ !!(rate_flags & CAKE_FLAG_INGRESS)))
goto nla_put_failure;
- if (nla_put_u32(skb, TCA_CAKE_ACK_FILTER, q->ack_filter))
+ if (nla_put_u32(skb, TCA_CAKE_ACK_FILTER, READ_ONCE(q->ack_filter)))
goto nla_put_failure;
if (nla_put_u32(skb, TCA_CAKE_NAT,
- !!(q->flow_mode & CAKE_FLOW_NAT_FLAG)))
+ !!(flow_mode & CAKE_FLOW_NAT_FLAG)))
goto nla_put_failure;
- if (nla_put_u32(skb, TCA_CAKE_DIFFSERV_MODE, q->tin_mode))
+ if (nla_put_u32(skb, TCA_CAKE_DIFFSERV_MODE, READ_ONCE(q->tin_mode)))
goto nla_put_failure;
if (nla_put_u32(skb, TCA_CAKE_WASH,
- !!(q->rate_flags & CAKE_FLAG_WASH)))
+ !!(rate_flags & CAKE_FLAG_WASH)))
goto nla_put_failure;
- if (nla_put_u32(skb, TCA_CAKE_OVERHEAD, q->rate_overhead))
+ if (nla_put_u32(skb, TCA_CAKE_OVERHEAD, READ_ONCE(q->rate_overhead)))
goto nla_put_failure;
- if (!(q->rate_flags & CAKE_FLAG_OVERHEAD))
+ if (!(rate_flags & CAKE_FLAG_OVERHEAD))
if (nla_put_u32(skb, TCA_CAKE_RAW, 0))
goto nla_put_failure;
- if (nla_put_u32(skb, TCA_CAKE_ATM, q->atm_mode))
+ if (nla_put_u32(skb, TCA_CAKE_ATM, READ_ONCE(q->atm_mode)))
goto nla_put_failure;
- if (nla_put_u32(skb, TCA_CAKE_MPU, q->rate_mpu))
+ if (nla_put_u32(skb, TCA_CAKE_MPU, READ_ONCE(q->rate_mpu)))
goto nla_put_failure;
if (nla_put_u32(skb, TCA_CAKE_SPLIT_GSO,
- !!(q->rate_flags & CAKE_FLAG_SPLIT_GSO)))
+ !!(rate_flags & CAKE_FLAG_SPLIT_GSO)))
goto nla_put_failure;
- if (nla_put_u32(skb, TCA_CAKE_FWMARK, q->fwmark_mask))
+ if (nla_put_u32(skb, TCA_CAKE_FWMARK, READ_ONCE(q->fwmark_mask)))
goto nla_put_failure;
return nla_nest_end(skb, opts);
diff --git a/net/sched/sch_cbs.c b/net/sched/sch_cbs.c
index 69001eff03..939425da18 100644
--- a/net/sched/sch_cbs.c
+++ b/net/sched/sch_cbs.c
@@ -389,11 +389,11 @@ static int cbs_change(struct Qdisc *sch, struct nlattr *opt,
}
/* Everything went OK, save the parameters used. */
- q->hicredit = qopt->hicredit;
- q->locredit = qopt->locredit;
- q->idleslope = qopt->idleslope * BYTES_PER_KBIT;
- q->sendslope = qopt->sendslope * BYTES_PER_KBIT;
- q->offload = qopt->offload;
+ WRITE_ONCE(q->hicredit, qopt->hicredit);
+ WRITE_ONCE(q->locredit, qopt->locredit);
+ WRITE_ONCE(q->idleslope, qopt->idleslope * BYTES_PER_KBIT);
+ WRITE_ONCE(q->sendslope, qopt->sendslope * BYTES_PER_KBIT);
+ WRITE_ONCE(q->offload, qopt->offload);
return 0;
}
@@ -459,11 +459,11 @@ static int cbs_dump(struct Qdisc *sch, struct sk_buff *skb)
if (!nest)
goto nla_put_failure;
- opt.hicredit = q->hicredit;
- opt.locredit = q->locredit;
- opt.sendslope = div64_s64(q->sendslope, BYTES_PER_KBIT);
- opt.idleslope = div64_s64(q->idleslope, BYTES_PER_KBIT);
- opt.offload = q->offload;
+ opt.hicredit = READ_ONCE(q->hicredit);
+ opt.locredit = READ_ONCE(q->locredit);
+ opt.sendslope = div64_s64(READ_ONCE(q->sendslope), BYTES_PER_KBIT);
+ opt.idleslope = div64_s64(READ_ONCE(q->idleslope), BYTES_PER_KBIT);
+ opt.offload = READ_ONCE(q->offload);
if (nla_put(skb, TCA_CBS_PARMS, sizeof(opt), &opt))
goto nla_put_failure;
diff --git a/net/sched/sch_choke.c b/net/sched/sch_choke.c
index ea108030c6..9107201092 100644
--- a/net/sched/sch_choke.c
+++ b/net/sched/sch_choke.c
@@ -405,8 +405,8 @@ static int choke_change(struct Qdisc *sch, struct nlattr *opt,
} else
sch_tree_lock(sch);
- q->flags = ctl->flags;
- q->limit = ctl->limit;
+ WRITE_ONCE(q->flags, ctl->flags);
+ WRITE_ONCE(q->limit, ctl->limit);
red_set_parms(&q->parms, ctl->qth_min, ctl->qth_max, ctl->Wlog,
ctl->Plog, ctl->Scell_log,
@@ -431,15 +431,16 @@ static int choke_init(struct Qdisc *sch, struct nlattr *opt,
static int choke_dump(struct Qdisc *sch, struct sk_buff *skb)
{
struct choke_sched_data *q = qdisc_priv(sch);
+ u8 Wlog = READ_ONCE(q->parms.Wlog);
struct nlattr *opts = NULL;
struct tc_red_qopt opt = {
- .limit = q->limit,
- .flags = q->flags,
- .qth_min = q->parms.qth_min >> q->parms.Wlog,
- .qth_max = q->parms.qth_max >> q->parms.Wlog,
- .Wlog = q->parms.Wlog,
- .Plog = q->parms.Plog,
- .Scell_log = q->parms.Scell_log,
+ .limit = READ_ONCE(q->limit),
+ .flags = READ_ONCE(q->flags),
+ .qth_min = READ_ONCE(q->parms.qth_min) >> Wlog,
+ .qth_max = READ_ONCE(q->parms.qth_max) >> Wlog,
+ .Wlog = Wlog,
+ .Plog = READ_ONCE(q->parms.Plog),
+ .Scell_log = READ_ONCE(q->parms.Scell_log),
};
opts = nla_nest_start_noflag(skb, TCA_OPTIONS);
@@ -447,7 +448,7 @@ static int choke_dump(struct Qdisc *sch, struct sk_buff *skb)
goto nla_put_failure;
if (nla_put(skb, TCA_CHOKE_PARMS, sizeof(opt), &opt) ||
- nla_put_u32(skb, TCA_CHOKE_MAX_P, q->parms.max_P))
+ nla_put_u32(skb, TCA_CHOKE_MAX_P, READ_ONCE(q->parms.max_P)))
goto nla_put_failure;
return nla_nest_end(skb, opts);
diff --git a/net/sched/sch_codel.c b/net/sched/sch_codel.c
index ecb3f164bb..3e8d4fe4d9 100644
--- a/net/sched/sch_codel.c
+++ b/net/sched/sch_codel.c
@@ -118,26 +118,31 @@ static int codel_change(struct Qdisc *sch, struct nlattr *opt,
if (tb[TCA_CODEL_TARGET]) {
u32 target = nla_get_u32(tb[TCA_CODEL_TARGET]);
- q->params.target = ((u64)target * NSEC_PER_USEC) >> CODEL_SHIFT;
+ WRITE_ONCE(q->params.target,
+ ((u64)target * NSEC_PER_USEC) >> CODEL_SHIFT);
}
if (tb[TCA_CODEL_CE_THRESHOLD]) {
u64 val = nla_get_u32(tb[TCA_CODEL_CE_THRESHOLD]);
- q->params.ce_threshold = (val * NSEC_PER_USEC) >> CODEL_SHIFT;
+ WRITE_ONCE(q->params.ce_threshold,
+ (val * NSEC_PER_USEC) >> CODEL_SHIFT);
}
if (tb[TCA_CODEL_INTERVAL]) {
u32 interval = nla_get_u32(tb[TCA_CODEL_INTERVAL]);
- q->params.interval = ((u64)interval * NSEC_PER_USEC) >> CODEL_SHIFT;
+ WRITE_ONCE(q->params.interval,
+ ((u64)interval * NSEC_PER_USEC) >> CODEL_SHIFT);
}
if (tb[TCA_CODEL_LIMIT])
- sch->limit = nla_get_u32(tb[TCA_CODEL_LIMIT]);
+ WRITE_ONCE(sch->limit,
+ nla_get_u32(tb[TCA_CODEL_LIMIT]));
if (tb[TCA_CODEL_ECN])
- q->params.ecn = !!nla_get_u32(tb[TCA_CODEL_ECN]);
+ WRITE_ONCE(q->params.ecn,
+ !!nla_get_u32(tb[TCA_CODEL_ECN]));
qlen = sch->q.qlen;
while (sch->q.qlen > sch->limit) {
@@ -183,6 +188,7 @@ static int codel_init(struct Qdisc *sch, struct nlattr *opt,
static int codel_dump(struct Qdisc *sch, struct sk_buff *skb)
{
struct codel_sched_data *q = qdisc_priv(sch);
+ codel_time_t ce_threshold;
struct nlattr *opts;
opts = nla_nest_start_noflag(skb, TCA_OPTIONS);
@@ -190,17 +196,18 @@ static int codel_dump(struct Qdisc *sch, struct sk_buff *skb)
goto nla_put_failure;
if (nla_put_u32(skb, TCA_CODEL_TARGET,
- codel_time_to_us(q->params.target)) ||
+ codel_time_to_us(READ_ONCE(q->params.target))) ||
nla_put_u32(skb, TCA_CODEL_LIMIT,
- sch->limit) ||
+ READ_ONCE(sch->limit)) ||
nla_put_u32(skb, TCA_CODEL_INTERVAL,
- codel_time_to_us(q->params.interval)) ||
+ codel_time_to_us(READ_ONCE(q->params.interval))) ||
nla_put_u32(skb, TCA_CODEL_ECN,
- q->params.ecn))
+ READ_ONCE(q->params.ecn)))
goto nla_put_failure;
- if (q->params.ce_threshold != CODEL_DISABLED_THRESHOLD &&
+ ce_threshold = READ_ONCE(q->params.ce_threshold);
+ if (ce_threshold != CODEL_DISABLED_THRESHOLD &&
nla_put_u32(skb, TCA_CODEL_CE_THRESHOLD,
- codel_time_to_us(q->params.ce_threshold)))
+ codel_time_to_us(ce_threshold)))
goto nla_put_failure;
return nla_nest_end(skb, opts);
diff --git a/net/sched/sch_etf.c b/net/sched/sch_etf.c
index 2e4bef713b..c74d778c32 100644
--- a/net/sched/sch_etf.c
+++ b/net/sched/sch_etf.c
@@ -467,15 +467,15 @@ static int etf_dump(struct Qdisc *sch, struct sk_buff *skb)
if (!nest)
goto nla_put_failure;
- opt.delta = q->delta;
- opt.clockid = q->clockid;
- if (q->offload)
+ opt.delta = READ_ONCE(q->delta);
+ opt.clockid = READ_ONCE(q->clockid);
+ if (READ_ONCE(q->offload))
opt.flags |= TC_ETF_OFFLOAD_ON;
- if (q->deadline_mode)
+ if (READ_ONCE(q->deadline_mode))
opt.flags |= TC_ETF_DEADLINE_MODE_ON;
- if (q->skip_sock_check)
+ if (READ_ONCE(q->skip_sock_check))
opt.flags |= TC_ETF_SKIP_SOCK_CHECK;
if (nla_put(skb, TCA_ETF_PARMS, sizeof(opt), &opt))
diff --git a/net/sched/sch_ets.c b/net/sched/sch_ets.c
index 835b4460b4..f80bc05d4c 100644
--- a/net/sched/sch_ets.c
+++ b/net/sched/sch_ets.c
@@ -646,7 +646,7 @@ static int ets_qdisc_change(struct Qdisc *sch, struct nlattr *opt,
sch_tree_lock(sch);
- q->nbands = nbands;
+ WRITE_ONCE(q->nbands, nbands);
for (i = nstrict; i < q->nstrict; i++) {
if (q->classes[i].qdisc->q.qlen) {
list_add_tail(&q->classes[i].alist, &q->active);
@@ -658,11 +658,11 @@ static int ets_qdisc_change(struct Qdisc *sch, struct nlattr *opt,
list_del(&q->classes[i].alist);
qdisc_tree_flush_backlog(q->classes[i].qdisc);
}
- q->nstrict = nstrict;
+ WRITE_ONCE(q->nstrict, nstrict);
memcpy(q->prio2band, priomap, sizeof(priomap));
for (i = 0; i < q->nbands; i++)
- q->classes[i].quantum = quanta[i];
+ WRITE_ONCE(q->classes[i].quantum, quanta[i]);
for (i = oldbands; i < q->nbands; i++) {
q->classes[i].qdisc = queues[i];
@@ -676,7 +676,7 @@ static int ets_qdisc_change(struct Qdisc *sch, struct nlattr *opt,
for (i = q->nbands; i < oldbands; i++) {
qdisc_put(q->classes[i].qdisc);
q->classes[i].qdisc = NULL;
- q->classes[i].quantum = 0;
+ WRITE_ONCE(q->classes[i].quantum, 0);
q->classes[i].deficit = 0;
gnet_stats_basic_sync_init(&q->classes[i].bstats);
memset(&q->classes[i].qstats, 0, sizeof(q->classes[i].qstats));
@@ -733,6 +733,7 @@ static int ets_qdisc_dump(struct Qdisc *sch, struct sk_buff *skb)
struct ets_sched *q = qdisc_priv(sch);
struct nlattr *opts;
struct nlattr *nest;
+ u8 nbands, nstrict;
int band;
int prio;
int err;
@@ -745,21 +746,22 @@ static int ets_qdisc_dump(struct Qdisc *sch, struct sk_buff *skb)
if (!opts)
goto nla_err;
- if (nla_put_u8(skb, TCA_ETS_NBANDS, q->nbands))
+ nbands = READ_ONCE(q->nbands);
+ if (nla_put_u8(skb, TCA_ETS_NBANDS, nbands))
goto nla_err;
- if (q->nstrict &&
- nla_put_u8(skb, TCA_ETS_NSTRICT, q->nstrict))
+ nstrict = READ_ONCE(q->nstrict);
+ if (nstrict && nla_put_u8(skb, TCA_ETS_NSTRICT, nstrict))
goto nla_err;
- if (q->nbands > q->nstrict) {
+ if (nbands > nstrict) {
nest = nla_nest_start(skb, TCA_ETS_QUANTA);
if (!nest)
goto nla_err;
- for (band = q->nstrict; band < q->nbands; band++) {
+ for (band = nstrict; band < nbands; band++) {
if (nla_put_u32(skb, TCA_ETS_QUANTA_BAND,
- q->classes[band].quantum))
+ READ_ONCE(q->classes[band].quantum)))
goto nla_err;
}
@@ -771,7 +773,8 @@ static int ets_qdisc_dump(struct Qdisc *sch, struct sk_buff *skb)
goto nla_err;
for (prio = 0; prio <= TC_PRIO_MAX; prio++) {
- if (nla_put_u8(skb, TCA_ETS_PRIOMAP_BAND, q->prio2band[prio]))
+ if (nla_put_u8(skb, TCA_ETS_PRIOMAP_BAND,
+ READ_ONCE(q->prio2band[prio])))
goto nla_err;
}
diff --git a/net/sched/sch_fifo.c b/net/sched/sch_fifo.c
index 450f5c67ac..b50b2c2cc0 100644
--- a/net/sched/sch_fifo.c
+++ b/net/sched/sch_fifo.c
@@ -19,7 +19,8 @@
static int bfifo_enqueue(struct sk_buff *skb, struct Qdisc *sch,
struct sk_buff **to_free)
{
- if (likely(sch->qstats.backlog + qdisc_pkt_len(skb) <= sch->limit))
+ if (likely(sch->qstats.backlog + qdisc_pkt_len(skb) <=
+ READ_ONCE(sch->limit)))
return qdisc_enqueue_tail(skb, sch);
return qdisc_drop(skb, sch, to_free);
@@ -28,7 +29,7 @@ static int bfifo_enqueue(struct sk_buff *skb, struct Qdisc *sch,
static int pfifo_enqueue(struct sk_buff *skb, struct Qdisc *sch,
struct sk_buff **to_free)
{
- if (likely(sch->q.qlen < sch->limit))
+ if (likely(sch->q.qlen < READ_ONCE(sch->limit)))
return qdisc_enqueue_tail(skb, sch);
return qdisc_drop(skb, sch, to_free);
@@ -39,7 +40,7 @@ static int pfifo_tail_enqueue(struct sk_buff *skb, struct Qdisc *sch,
{
unsigned int prev_backlog;
- if (likely(sch->q.qlen < sch->limit))
+ if (likely(sch->q.qlen < READ_ONCE(sch->limit)))
return qdisc_enqueue_tail(skb, sch);
prev_backlog = sch->qstats.backlog;
@@ -105,14 +106,14 @@ static int __fifo_init(struct Qdisc *sch, struct nlattr *opt,
if (is_bfifo)
limit *= psched_mtu(qdisc_dev(sch));
- sch->limit = limit;
+ WRITE_ONCE(sch->limit, limit);
} else {
struct tc_fifo_qopt *ctl = nla_data(opt);
if (nla_len(opt) < sizeof(*ctl))
return -EINVAL;
- sch->limit = ctl->limit;
+ WRITE_ONCE(sch->limit, ctl->limit);
}
if (is_bfifo)
@@ -154,7 +155,7 @@ static void fifo_destroy(struct Qdisc *sch)
static int __fifo_dump(struct Qdisc *sch, struct sk_buff *skb)
{
- struct tc_fifo_qopt opt = { .limit = sch->limit };
+ struct tc_fifo_qopt opt = { .limit = READ_ONCE(sch->limit) };
if (nla_put(skb, TCA_OPTIONS, sizeof(opt), &opt))
goto nla_put_failure;
diff --git a/net/sched/sch_fq.c b/net/sched/sch_fq.c
index cdf23ff16f..2389747256 100644
--- a/net/sched/sch_fq.c
+++ b/net/sched/sch_fq.c
@@ -106,6 +106,8 @@ struct fq_perband_flows {
int quantum; /* based on band nr : 576KB, 192KB, 64KB */
};
+#define FQ_PRIO2BAND_CRUMB_SIZE ((TC_PRIO_MAX + 1) >> 2)
+
struct fq_sched_data {
/* Read mostly cache line */
@@ -122,7 +124,7 @@ struct fq_sched_data {
u8 rate_enable;
u8 fq_trees_log;
u8 horizon_drop;
- u8 prio2band[(TC_PRIO_MAX + 1) >> 2];
+ u8 prio2band[FQ_PRIO2BAND_CRUMB_SIZE];
u32 timer_slack; /* hrtimer slack in ns */
/* Read/Write fields. */
@@ -159,7 +161,7 @@ struct fq_sched_data {
/* return the i-th 2-bit value ("crumb") */
static u8 fq_prio2band(const u8 *prio2band, unsigned int prio)
{
- return (prio2band[prio / 4] >> (2 * (prio & 0x3))) & 0x3;
+ return (READ_ONCE(prio2band[prio / 4]) >> (2 * (prio & 0x3))) & 0x3;
}
/*
@@ -888,7 +890,7 @@ static int fq_resize(struct Qdisc *sch, u32 log)
fq_rehash(q, old_fq_root, q->fq_trees_log, array, log);
q->fq_root = array;
- q->fq_trees_log = log;
+ WRITE_ONCE(q->fq_trees_log, log);
sch_tree_unlock(sch);
@@ -927,11 +929,15 @@ static const struct nla_policy fq_policy[TCA_FQ_MAX + 1] = {
static void fq_prio2band_compress_crumb(const u8 *in, u8 *out)
{
const int num_elems = TC_PRIO_MAX + 1;
+ u8 tmp[FQ_PRIO2BAND_CRUMB_SIZE];
int i;
- memset(out, 0, num_elems / 4);
+ memset(tmp, 0, sizeof(tmp));
for (i = 0; i < num_elems; i++)
- out[i / 4] |= in[i] << (2 * (i & 0x3));
+ tmp[i / 4] |= in[i] << (2 * (i & 0x3));
+
+ for (i = 0; i < FQ_PRIO2BAND_CRUMB_SIZE; i++)
+ WRITE_ONCE(out[i], tmp[i]);
}
static void fq_prio2band_decompress_crumb(const u8 *in, u8 *out)
@@ -958,7 +964,7 @@ static int fq_load_weights(struct fq_sched_data *q,
}
}
for (i = 0; i < FQ_BANDS; i++)
- q->band_flows[i].quantum = weights[i];
+ WRITE_ONCE(q->band_flows[i].quantum, weights[i]);
return 0;
}
@@ -1011,16 +1017,18 @@ static int fq_change(struct Qdisc *sch, struct nlattr *opt,
err = -EINVAL;
}
if (tb[TCA_FQ_PLIMIT])
- sch->limit = nla_get_u32(tb[TCA_FQ_PLIMIT]);
+ WRITE_ONCE(sch->limit,
+ nla_get_u32(tb[TCA_FQ_PLIMIT]));
if (tb[TCA_FQ_FLOW_PLIMIT])
- q->flow_plimit = nla_get_u32(tb[TCA_FQ_FLOW_PLIMIT]);
+ WRITE_ONCE(q->flow_plimit,
+ nla_get_u32(tb[TCA_FQ_FLOW_PLIMIT]));
if (tb[TCA_FQ_QUANTUM]) {
u32 quantum = nla_get_u32(tb[TCA_FQ_QUANTUM]);
if (quantum > 0 && quantum <= (1 << 20)) {
- q->quantum = quantum;
+ WRITE_ONCE(q->quantum, quantum);
} else {
NL_SET_ERR_MSG_MOD(extack, "invalid quantum");
err = -EINVAL;
@@ -1028,7 +1036,8 @@ static int fq_change(struct Qdisc *sch, struct nlattr *opt,
}
if (tb[TCA_FQ_INITIAL_QUANTUM])
- q->initial_quantum = nla_get_u32(tb[TCA_FQ_INITIAL_QUANTUM]);
+ WRITE_ONCE(q->initial_quantum,
+ nla_get_u32(tb[TCA_FQ_INITIAL_QUANTUM]));
if (tb[TCA_FQ_FLOW_DEFAULT_RATE])
pr_warn_ratelimited("sch_fq: defrate %u ignored.\n",
@@ -1037,17 +1046,19 @@ static int fq_change(struct Qdisc *sch, struct nlattr *opt,
if (tb[TCA_FQ_FLOW_MAX_RATE]) {
u32 rate = nla_get_u32(tb[TCA_FQ_FLOW_MAX_RATE]);
- q->flow_max_rate = (rate == ~0U) ? ~0UL : rate;
+ WRITE_ONCE(q->flow_max_rate,
+ (rate == ~0U) ? ~0UL : rate);
}
if (tb[TCA_FQ_LOW_RATE_THRESHOLD])
- q->low_rate_threshold =
- nla_get_u32(tb[TCA_FQ_LOW_RATE_THRESHOLD]);
+ WRITE_ONCE(q->low_rate_threshold,
+ nla_get_u32(tb[TCA_FQ_LOW_RATE_THRESHOLD]));
if (tb[TCA_FQ_RATE_ENABLE]) {
u32 enable = nla_get_u32(tb[TCA_FQ_RATE_ENABLE]);
if (enable <= 1)
- q->rate_enable = enable;
+ WRITE_ONCE(q->rate_enable,
+ enable);
else
err = -EINVAL;
}
@@ -1055,7 +1066,8 @@ static int fq_change(struct Qdisc *sch, struct nlattr *opt,
if (tb[TCA_FQ_FLOW_REFILL_DELAY]) {
u32 usecs_delay = nla_get_u32(tb[TCA_FQ_FLOW_REFILL_DELAY]) ;
- q->flow_refill_delay = usecs_to_jiffies(usecs_delay);
+ WRITE_ONCE(q->flow_refill_delay,
+ usecs_to_jiffies(usecs_delay));
}
if (!err && tb[TCA_FQ_PRIOMAP])
@@ -1065,21 +1077,26 @@ static int fq_change(struct Qdisc *sch, struct nlattr *opt,
err = fq_load_weights(q, tb[TCA_FQ_WEIGHTS], extack);
if (tb[TCA_FQ_ORPHAN_MASK])
- q->orphan_mask = nla_get_u32(tb[TCA_FQ_ORPHAN_MASK]);
+ WRITE_ONCE(q->orphan_mask,
+ nla_get_u32(tb[TCA_FQ_ORPHAN_MASK]));
if (tb[TCA_FQ_CE_THRESHOLD])
- q->ce_threshold = (u64)NSEC_PER_USEC *
- nla_get_u32(tb[TCA_FQ_CE_THRESHOLD]);
+ WRITE_ONCE(q->ce_threshold,
+ (u64)NSEC_PER_USEC *
+ nla_get_u32(tb[TCA_FQ_CE_THRESHOLD]));
if (tb[TCA_FQ_TIMER_SLACK])
- q->timer_slack = nla_get_u32(tb[TCA_FQ_TIMER_SLACK]);
+ WRITE_ONCE(q->timer_slack,
+ nla_get_u32(tb[TCA_FQ_TIMER_SLACK]));
if (tb[TCA_FQ_HORIZON])
- q->horizon = (u64)NSEC_PER_USEC *
- nla_get_u32(tb[TCA_FQ_HORIZON]);
+ WRITE_ONCE(q->horizon,
+ (u64)NSEC_PER_USEC *
+ nla_get_u32(tb[TCA_FQ_HORIZON]));
if (tb[TCA_FQ_HORIZON_DROP])
- q->horizon_drop = nla_get_u8(tb[TCA_FQ_HORIZON_DROP]);
+ WRITE_ONCE(q->horizon_drop,
+ nla_get_u8(tb[TCA_FQ_HORIZON_DROP]));
if (!err) {
@@ -1160,13 +1177,13 @@ static int fq_init(struct Qdisc *sch, struct nlattr *opt,
static int fq_dump(struct Qdisc *sch, struct sk_buff *skb)
{
struct fq_sched_data *q = qdisc_priv(sch);
- u64 ce_threshold = q->ce_threshold;
struct tc_prio_qopt prio = {
.bands = FQ_BANDS,
};
- u64 horizon = q->horizon;
struct nlattr *opts;
+ u64 ce_threshold;
s32 weights[3];
+ u64 horizon;
opts = nla_nest_start_noflag(skb, TCA_OPTIONS);
if (opts == NULL)
@@ -1174,35 +1191,48 @@ static int fq_dump(struct Qdisc *sch, struct sk_buff *skb)
/* TCA_FQ_FLOW_DEFAULT_RATE is not used anymore */
+ ce_threshold = READ_ONCE(q->ce_threshold);
do_div(ce_threshold, NSEC_PER_USEC);
+
+ horizon = READ_ONCE(q->horizon);
do_div(horizon, NSEC_PER_USEC);
- if (nla_put_u32(skb, TCA_FQ_PLIMIT, sch->limit) ||
- nla_put_u32(skb, TCA_FQ_FLOW_PLIMIT, q->flow_plimit) ||
- nla_put_u32(skb, TCA_FQ_QUANTUM, q->quantum) ||
- nla_put_u32(skb, TCA_FQ_INITIAL_QUANTUM, q->initial_quantum) ||
- nla_put_u32(skb, TCA_FQ_RATE_ENABLE, q->rate_enable) ||
+ if (nla_put_u32(skb, TCA_FQ_PLIMIT,
+ READ_ONCE(sch->limit)) ||
+ nla_put_u32(skb, TCA_FQ_FLOW_PLIMIT,
+ READ_ONCE(q->flow_plimit)) ||
+ nla_put_u32(skb, TCA_FQ_QUANTUM,
+ READ_ONCE(q->quantum)) ||
+ nla_put_u32(skb, TCA_FQ_INITIAL_QUANTUM,
+ READ_ONCE(q->initial_quantum)) ||
+ nla_put_u32(skb, TCA_FQ_RATE_ENABLE,
+ READ_ONCE(q->rate_enable)) ||
nla_put_u32(skb, TCA_FQ_FLOW_MAX_RATE,
- min_t(unsigned long, q->flow_max_rate, ~0U)) ||
+ min_t(unsigned long,
+ READ_ONCE(q->flow_max_rate), ~0U)) ||
nla_put_u32(skb, TCA_FQ_FLOW_REFILL_DELAY,
- jiffies_to_usecs(q->flow_refill_delay)) ||
- nla_put_u32(skb, TCA_FQ_ORPHAN_MASK, q->orphan_mask) ||
+ jiffies_to_usecs(READ_ONCE(q->flow_refill_delay))) ||
+ nla_put_u32(skb, TCA_FQ_ORPHAN_MASK,
+ READ_ONCE(q->orphan_mask)) ||
nla_put_u32(skb, TCA_FQ_LOW_RATE_THRESHOLD,
- q->low_rate_threshold) ||
+ READ_ONCE(q->low_rate_threshold)) ||
nla_put_u32(skb, TCA_FQ_CE_THRESHOLD, (u32)ce_threshold) ||
- nla_put_u32(skb, TCA_FQ_BUCKETS_LOG, q->fq_trees_log) ||
- nla_put_u32(skb, TCA_FQ_TIMER_SLACK, q->timer_slack) ||
+ nla_put_u32(skb, TCA_FQ_BUCKETS_LOG,
+ READ_ONCE(q->fq_trees_log)) ||
+ nla_put_u32(skb, TCA_FQ_TIMER_SLACK,
+ READ_ONCE(q->timer_slack)) ||
nla_put_u32(skb, TCA_FQ_HORIZON, (u32)horizon) ||
- nla_put_u8(skb, TCA_FQ_HORIZON_DROP, q->horizon_drop))
+ nla_put_u8(skb, TCA_FQ_HORIZON_DROP,
+ READ_ONCE(q->horizon_drop)))
goto nla_put_failure;
fq_prio2band_decompress_crumb(q->prio2band, prio.priomap);
if (nla_put(skb, TCA_FQ_PRIOMAP, sizeof(prio), &prio))
goto nla_put_failure;
- weights[0] = q->band_flows[0].quantum;
- weights[1] = q->band_flows[1].quantum;
- weights[2] = q->band_flows[2].quantum;
+ weights[0] = READ_ONCE(q->band_flows[0].quantum);
+ weights[1] = READ_ONCE(q->band_flows[1].quantum);
+ weights[2] = READ_ONCE(q->band_flows[2].quantum);
if (nla_put(skb, TCA_FQ_WEIGHTS, sizeof(weights), &weights))
goto nla_put_failure;
diff --git a/net/sched/sch_fq_codel.c b/net/sched/sch_fq_codel.c
index 79f9d6de6c..4f908c11ba 100644
--- a/net/sched/sch_fq_codel.c
+++ b/net/sched/sch_fq_codel.c
@@ -396,40 +396,49 @@ static int fq_codel_change(struct Qdisc *sch, struct nlattr *opt,
if (tb[TCA_FQ_CODEL_TARGET]) {
u64 target = nla_get_u32(tb[TCA_FQ_CODEL_TARGET]);
- q->cparams.target = (target * NSEC_PER_USEC) >> CODEL_SHIFT;
+ WRITE_ONCE(q->cparams.target,
+ (target * NSEC_PER_USEC) >> CODEL_SHIFT);
}
if (tb[TCA_FQ_CODEL_CE_THRESHOLD]) {
u64 val = nla_get_u32(tb[TCA_FQ_CODEL_CE_THRESHOLD]);
- q->cparams.ce_threshold = (val * NSEC_PER_USEC) >> CODEL_SHIFT;
+ WRITE_ONCE(q->cparams.ce_threshold,
+ (val * NSEC_PER_USEC) >> CODEL_SHIFT);
}
if (tb[TCA_FQ_CODEL_CE_THRESHOLD_SELECTOR])
- q->cparams.ce_threshold_selector = nla_get_u8(tb[TCA_FQ_CODEL_CE_THRESHOLD_SELECTOR]);
+ WRITE_ONCE(q->cparams.ce_threshold_selector,
+ nla_get_u8(tb[TCA_FQ_CODEL_CE_THRESHOLD_SELECTOR]));
if (tb[TCA_FQ_CODEL_CE_THRESHOLD_MASK])
- q->cparams.ce_threshold_mask = nla_get_u8(tb[TCA_FQ_CODEL_CE_THRESHOLD_MASK]);
+ WRITE_ONCE(q->cparams.ce_threshold_mask,
+ nla_get_u8(tb[TCA_FQ_CODEL_CE_THRESHOLD_MASK]));
if (tb[TCA_FQ_CODEL_INTERVAL]) {
u64 interval = nla_get_u32(tb[TCA_FQ_CODEL_INTERVAL]);
- q->cparams.interval = (interval * NSEC_PER_USEC) >> CODEL_SHIFT;
+ WRITE_ONCE(q->cparams.interval,
+ (interval * NSEC_PER_USEC) >> CODEL_SHIFT);
}
if (tb[TCA_FQ_CODEL_LIMIT])
- sch->limit = nla_get_u32(tb[TCA_FQ_CODEL_LIMIT]);
+ WRITE_ONCE(sch->limit,
+ nla_get_u32(tb[TCA_FQ_CODEL_LIMIT]));
if (tb[TCA_FQ_CODEL_ECN])
- q->cparams.ecn = !!nla_get_u32(tb[TCA_FQ_CODEL_ECN]);
+ WRITE_ONCE(q->cparams.ecn,
+ !!nla_get_u32(tb[TCA_FQ_CODEL_ECN]));
if (quantum)
- q->quantum = quantum;
+ WRITE_ONCE(q->quantum, quantum);
if (tb[TCA_FQ_CODEL_DROP_BATCH_SIZE])
- q->drop_batch_size = max(1U, nla_get_u32(tb[TCA_FQ_CODEL_DROP_BATCH_SIZE]));
+ WRITE_ONCE(q->drop_batch_size,
+ max(1U, nla_get_u32(tb[TCA_FQ_CODEL_DROP_BATCH_SIZE])));
if (tb[TCA_FQ_CODEL_MEMORY_LIMIT])
- q->memory_limit = min(1U << 31, nla_get_u32(tb[TCA_FQ_CODEL_MEMORY_LIMIT]));
+ WRITE_ONCE(q->memory_limit,
+ min(1U << 31, nla_get_u32(tb[TCA_FQ_CODEL_MEMORY_LIMIT])));
while (sch->q.qlen > sch->limit ||
q->memory_usage > q->memory_limit) {
@@ -522,6 +531,7 @@ init_failure:
static int fq_codel_dump(struct Qdisc *sch, struct sk_buff *skb)
{
struct fq_codel_sched_data *q = qdisc_priv(sch);
+ codel_time_t ce_threshold;
struct nlattr *opts;
opts = nla_nest_start_noflag(skb, TCA_OPTIONS);
@@ -529,30 +539,33 @@ static int fq_codel_dump(struct Qdisc *sch, struct sk_buff *skb)
goto nla_put_failure;
if (nla_put_u32(skb, TCA_FQ_CODEL_TARGET,
- codel_time_to_us(q->cparams.target)) ||
+ codel_time_to_us(READ_ONCE(q->cparams.target))) ||
nla_put_u32(skb, TCA_FQ_CODEL_LIMIT,
- sch->limit) ||
+ READ_ONCE(sch->limit)) ||
nla_put_u32(skb, TCA_FQ_CODEL_INTERVAL,
- codel_time_to_us(q->cparams.interval)) ||
+ codel_time_to_us(READ_ONCE(q->cparams.interval))) ||
nla_put_u32(skb, TCA_FQ_CODEL_ECN,
- q->cparams.ecn) ||
+ READ_ONCE(q->cparams.ecn)) ||
nla_put_u32(skb, TCA_FQ_CODEL_QUANTUM,
- q->quantum) ||
+ READ_ONCE(q->quantum)) ||
nla_put_u32(skb, TCA_FQ_CODEL_DROP_BATCH_SIZE,
- q->drop_batch_size) ||
+ READ_ONCE(q->drop_batch_size)) ||
nla_put_u32(skb, TCA_FQ_CODEL_MEMORY_LIMIT,
- q->memory_limit) ||
+ READ_ONCE(q->memory_limit)) ||
nla_put_u32(skb, TCA_FQ_CODEL_FLOWS,
- q->flows_cnt))
+ READ_ONCE(q->flows_cnt)))
goto nla_put_failure;
- if (q->cparams.ce_threshold != CODEL_DISABLED_THRESHOLD) {
+ ce_threshold = READ_ONCE(q->cparams.ce_threshold);
+ if (ce_threshold != CODEL_DISABLED_THRESHOLD) {
if (nla_put_u32(skb, TCA_FQ_CODEL_CE_THRESHOLD,
- codel_time_to_us(q->cparams.ce_threshold)))
+ codel_time_to_us(ce_threshold)))
goto nla_put_failure;
- if (nla_put_u8(skb, TCA_FQ_CODEL_CE_THRESHOLD_SELECTOR, q->cparams.ce_threshold_selector))
+ if (nla_put_u8(skb, TCA_FQ_CODEL_CE_THRESHOLD_SELECTOR,
+ READ_ONCE(q->cparams.ce_threshold_selector)))
goto nla_put_failure;
- if (nla_put_u8(skb, TCA_FQ_CODEL_CE_THRESHOLD_MASK, q->cparams.ce_threshold_mask))
+ if (nla_put_u8(skb, TCA_FQ_CODEL_CE_THRESHOLD_MASK,
+ READ_ONCE(q->cparams.ce_threshold_mask)))
goto nla_put_failure;
}
diff --git a/net/sched/sch_fq_pie.c b/net/sched/sch_fq_pie.c
index 358cf304f4..c38f33ff80 100644
--- a/net/sched/sch_fq_pie.c
+++ b/net/sched/sch_fq_pie.c
@@ -299,8 +299,8 @@ static int fq_pie_change(struct Qdisc *sch, struct nlattr *opt,
if (tb[TCA_FQ_PIE_LIMIT]) {
u32 limit = nla_get_u32(tb[TCA_FQ_PIE_LIMIT]);
- q->p_params.limit = limit;
- sch->limit = limit;
+ WRITE_ONCE(q->p_params.limit, limit);
+ WRITE_ONCE(sch->limit, limit);
}
if (tb[TCA_FQ_PIE_FLOWS]) {
if (q->flows) {
@@ -322,39 +322,45 @@ static int fq_pie_change(struct Qdisc *sch, struct nlattr *opt,
u32 target = nla_get_u32(tb[TCA_FQ_PIE_TARGET]);
/* convert to pschedtime */
- q->p_params.target =
- PSCHED_NS2TICKS((u64)target * NSEC_PER_USEC);
+ WRITE_ONCE(q->p_params.target,
+ PSCHED_NS2TICKS((u64)target * NSEC_PER_USEC));
}
/* tupdate is in jiffies */
if (tb[TCA_FQ_PIE_TUPDATE])
- q->p_params.tupdate =
- usecs_to_jiffies(nla_get_u32(tb[TCA_FQ_PIE_TUPDATE]));
+ WRITE_ONCE(q->p_params.tupdate,
+ usecs_to_jiffies(nla_get_u32(tb[TCA_FQ_PIE_TUPDATE])));
if (tb[TCA_FQ_PIE_ALPHA])
- q->p_params.alpha = nla_get_u32(tb[TCA_FQ_PIE_ALPHA]);
+ WRITE_ONCE(q->p_params.alpha,
+ nla_get_u32(tb[TCA_FQ_PIE_ALPHA]));
if (tb[TCA_FQ_PIE_BETA])
- q->p_params.beta = nla_get_u32(tb[TCA_FQ_PIE_BETA]);
+ WRITE_ONCE(q->p_params.beta,
+ nla_get_u32(tb[TCA_FQ_PIE_BETA]));
if (tb[TCA_FQ_PIE_QUANTUM])
- q->quantum = nla_get_u32(tb[TCA_FQ_PIE_QUANTUM]);
+ WRITE_ONCE(q->quantum, nla_get_u32(tb[TCA_FQ_PIE_QUANTUM]));
if (tb[TCA_FQ_PIE_MEMORY_LIMIT])
- q->memory_limit = nla_get_u32(tb[TCA_FQ_PIE_MEMORY_LIMIT]);
+ WRITE_ONCE(q->memory_limit,
+ nla_get_u32(tb[TCA_FQ_PIE_MEMORY_LIMIT]));
if (tb[TCA_FQ_PIE_ECN_PROB])
- q->ecn_prob = nla_get_u32(tb[TCA_FQ_PIE_ECN_PROB]);
+ WRITE_ONCE(q->ecn_prob,
+ nla_get_u32(tb[TCA_FQ_PIE_ECN_PROB]));
if (tb[TCA_FQ_PIE_ECN])
- q->p_params.ecn = nla_get_u32(tb[TCA_FQ_PIE_ECN]);
+ WRITE_ONCE(q->p_params.ecn,
+ nla_get_u32(tb[TCA_FQ_PIE_ECN]));
if (tb[TCA_FQ_PIE_BYTEMODE])
- q->p_params.bytemode = nla_get_u32(tb[TCA_FQ_PIE_BYTEMODE]);
+ WRITE_ONCE(q->p_params.bytemode,
+ nla_get_u32(tb[TCA_FQ_PIE_BYTEMODE]));
if (tb[TCA_FQ_PIE_DQ_RATE_ESTIMATOR])
- q->p_params.dq_rate_estimator =
- nla_get_u32(tb[TCA_FQ_PIE_DQ_RATE_ESTIMATOR]);
+ WRITE_ONCE(q->p_params.dq_rate_estimator,
+ nla_get_u32(tb[TCA_FQ_PIE_DQ_RATE_ESTIMATOR]));
/* Drop excess packets if new limit is lower */
while (sch->q.qlen > sch->limit) {
@@ -471,22 +477,23 @@ static int fq_pie_dump(struct Qdisc *sch, struct sk_buff *skb)
return -EMSGSIZE;
/* convert target from pschedtime to us */
- if (nla_put_u32(skb, TCA_FQ_PIE_LIMIT, sch->limit) ||
- nla_put_u32(skb, TCA_FQ_PIE_FLOWS, q->flows_cnt) ||
+ if (nla_put_u32(skb, TCA_FQ_PIE_LIMIT, READ_ONCE(sch->limit)) ||
+ nla_put_u32(skb, TCA_FQ_PIE_FLOWS, READ_ONCE(q->flows_cnt)) ||
nla_put_u32(skb, TCA_FQ_PIE_TARGET,
- ((u32)PSCHED_TICKS2NS(q->p_params.target)) /
+ ((u32)PSCHED_TICKS2NS(READ_ONCE(q->p_params.target))) /
NSEC_PER_USEC) ||
nla_put_u32(skb, TCA_FQ_PIE_TUPDATE,
- jiffies_to_usecs(q->p_params.tupdate)) ||
- nla_put_u32(skb, TCA_FQ_PIE_ALPHA, q->p_params.alpha) ||
- nla_put_u32(skb, TCA_FQ_PIE_BETA, q->p_params.beta) ||
- nla_put_u32(skb, TCA_FQ_PIE_QUANTUM, q->quantum) ||
- nla_put_u32(skb, TCA_FQ_PIE_MEMORY_LIMIT, q->memory_limit) ||
- nla_put_u32(skb, TCA_FQ_PIE_ECN_PROB, q->ecn_prob) ||
- nla_put_u32(skb, TCA_FQ_PIE_ECN, q->p_params.ecn) ||
- nla_put_u32(skb, TCA_FQ_PIE_BYTEMODE, q->p_params.bytemode) ||
+ jiffies_to_usecs(READ_ONCE(q->p_params.tupdate))) ||
+ nla_put_u32(skb, TCA_FQ_PIE_ALPHA, READ_ONCE(q->p_params.alpha)) ||
+ nla_put_u32(skb, TCA_FQ_PIE_BETA, READ_ONCE(q->p_params.beta)) ||
+ nla_put_u32(skb, TCA_FQ_PIE_QUANTUM, READ_ONCE(q->quantum)) ||
+ nla_put_u32(skb, TCA_FQ_PIE_MEMORY_LIMIT,
+ READ_ONCE(q->memory_limit)) ||
+ nla_put_u32(skb, TCA_FQ_PIE_ECN_PROB, READ_ONCE(q->ecn_prob)) ||
+ nla_put_u32(skb, TCA_FQ_PIE_ECN, READ_ONCE(q->p_params.ecn)) ||
+ nla_put_u32(skb, TCA_FQ_PIE_BYTEMODE, READ_ONCE(q->p_params.bytemode)) ||
nla_put_u32(skb, TCA_FQ_PIE_DQ_RATE_ESTIMATOR,
- q->p_params.dq_rate_estimator))
+ READ_ONCE(q->p_params.dq_rate_estimator)))
goto nla_put_failure;
return nla_nest_end(skb, opts);
diff --git a/net/sched/sch_generic.c b/net/sched/sch_generic.c
index fb32984d7a..e22ff003d5 100644
--- a/net/sched/sch_generic.c
+++ b/net/sched/sch_generic.c
@@ -506,19 +506,22 @@ static void dev_watchdog(struct timer_list *t)
unsigned int timedout_ms = 0;
unsigned int i;
unsigned long trans_start;
+ unsigned long oldest_start = jiffies;
for (i = 0; i < dev->num_tx_queues; i++) {
struct netdev_queue *txq;
txq = netdev_get_tx_queue(dev, i);
trans_start = READ_ONCE(txq->trans_start);
- if (netif_xmit_stopped(txq) &&
- time_after(jiffies, (trans_start +
- dev->watchdog_timeo))) {
+ if (!netif_xmit_stopped(txq))
+ continue;
+ if (time_after(jiffies, trans_start + dev->watchdog_timeo)) {
timedout_ms = jiffies_to_msecs(jiffies - trans_start);
atomic_long_inc(&txq->trans_timeout);
break;
}
+ if (time_after(oldest_start, trans_start))
+ oldest_start = trans_start;
}
if (unlikely(timedout_ms)) {
@@ -531,7 +534,7 @@ static void dev_watchdog(struct timer_list *t)
netif_unfreeze_queues(dev);
}
if (!mod_timer(&dev->watchdog_timer,
- round_jiffies(jiffies +
+ round_jiffies(oldest_start +
dev->watchdog_timeo)))
release = false;
}
diff --git a/net/sched/sch_hfsc.c b/net/sched/sch_hfsc.c
index 4e626df742..c287bf8423 100644
--- a/net/sched/sch_hfsc.c
+++ b/net/sched/sch_hfsc.c
@@ -1174,7 +1174,8 @@ hfsc_classify(struct sk_buff *skb, struct Qdisc *sch, int *qerr)
}
/* classification failed, try default class */
- cl = hfsc_find_class(TC_H_MAKE(TC_H_MAJ(sch->handle), q->defcls), sch);
+ cl = hfsc_find_class(TC_H_MAKE(TC_H_MAJ(sch->handle),
+ READ_ONCE(q->defcls)), sch);
if (cl == NULL || cl->level > 0)
return NULL;
@@ -1443,9 +1444,7 @@ hfsc_change_qdisc(struct Qdisc *sch, struct nlattr *opt,
return -EINVAL;
qopt = nla_data(opt);
- sch_tree_lock(sch);
- q->defcls = qopt->defcls;
- sch_tree_unlock(sch);
+ WRITE_ONCE(q->defcls, qopt->defcls);
return 0;
}
@@ -1525,7 +1524,7 @@ hfsc_dump_qdisc(struct Qdisc *sch, struct sk_buff *skb)
unsigned char *b = skb_tail_pointer(skb);
struct tc_hfsc_qopt qopt;
- qopt.defcls = q->defcls;
+ qopt.defcls = READ_ONCE(q->defcls);
if (nla_put(skb, TCA_OPTIONS, sizeof(qopt), &qopt))
goto nla_put_failure;
return skb->len;
diff --git a/net/sched/sch_hhf.c b/net/sched/sch_hhf.c
index 3f906df143..44d9efe1a9 100644
--- a/net/sched/sch_hhf.c
+++ b/net/sched/sch_hhf.c
@@ -534,27 +534,31 @@ static int hhf_change(struct Qdisc *sch, struct nlattr *opt,
sch_tree_lock(sch);
if (tb[TCA_HHF_BACKLOG_LIMIT])
- sch->limit = nla_get_u32(tb[TCA_HHF_BACKLOG_LIMIT]);
+ WRITE_ONCE(sch->limit, nla_get_u32(tb[TCA_HHF_BACKLOG_LIMIT]));
- q->quantum = new_quantum;
- q->hhf_non_hh_weight = new_hhf_non_hh_weight;
+ WRITE_ONCE(q->quantum, new_quantum);
+ WRITE_ONCE(q->hhf_non_hh_weight, new_hhf_non_hh_weight);
if (tb[TCA_HHF_HH_FLOWS_LIMIT])
- q->hh_flows_limit = nla_get_u32(tb[TCA_HHF_HH_FLOWS_LIMIT]);
+ WRITE_ONCE(q->hh_flows_limit,
+ nla_get_u32(tb[TCA_HHF_HH_FLOWS_LIMIT]));
if (tb[TCA_HHF_RESET_TIMEOUT]) {
u32 us = nla_get_u32(tb[TCA_HHF_RESET_TIMEOUT]);
- q->hhf_reset_timeout = usecs_to_jiffies(us);
+ WRITE_ONCE(q->hhf_reset_timeout,
+ usecs_to_jiffies(us));
}
if (tb[TCA_HHF_ADMIT_BYTES])
- q->hhf_admit_bytes = nla_get_u32(tb[TCA_HHF_ADMIT_BYTES]);
+ WRITE_ONCE(q->hhf_admit_bytes,
+ nla_get_u32(tb[TCA_HHF_ADMIT_BYTES]));
if (tb[TCA_HHF_EVICT_TIMEOUT]) {
u32 us = nla_get_u32(tb[TCA_HHF_EVICT_TIMEOUT]);
- q->hhf_evict_timeout = usecs_to_jiffies(us);
+ WRITE_ONCE(q->hhf_evict_timeout,
+ usecs_to_jiffies(us));
}
qlen = sch->q.qlen;
@@ -657,15 +661,18 @@ static int hhf_dump(struct Qdisc *sch, struct sk_buff *skb)
if (opts == NULL)
goto nla_put_failure;
- if (nla_put_u32(skb, TCA_HHF_BACKLOG_LIMIT, sch->limit) ||
- nla_put_u32(skb, TCA_HHF_QUANTUM, q->quantum) ||
- nla_put_u32(skb, TCA_HHF_HH_FLOWS_LIMIT, q->hh_flows_limit) ||
+ if (nla_put_u32(skb, TCA_HHF_BACKLOG_LIMIT, READ_ONCE(sch->limit)) ||
+ nla_put_u32(skb, TCA_HHF_QUANTUM, READ_ONCE(q->quantum)) ||
+ nla_put_u32(skb, TCA_HHF_HH_FLOWS_LIMIT,
+ READ_ONCE(q->hh_flows_limit)) ||
nla_put_u32(skb, TCA_HHF_RESET_TIMEOUT,
- jiffies_to_usecs(q->hhf_reset_timeout)) ||
- nla_put_u32(skb, TCA_HHF_ADMIT_BYTES, q->hhf_admit_bytes) ||
+ jiffies_to_usecs(READ_ONCE(q->hhf_reset_timeout))) ||
+ nla_put_u32(skb, TCA_HHF_ADMIT_BYTES,
+ READ_ONCE(q->hhf_admit_bytes)) ||
nla_put_u32(skb, TCA_HHF_EVICT_TIMEOUT,
- jiffies_to_usecs(q->hhf_evict_timeout)) ||
- nla_put_u32(skb, TCA_HHF_NON_HH_WEIGHT, q->hhf_non_hh_weight))
+ jiffies_to_usecs(READ_ONCE(q->hhf_evict_timeout))) ||
+ nla_put_u32(skb, TCA_HHF_NON_HH_WEIGHT,
+ READ_ONCE(q->hhf_non_hh_weight)))
goto nla_put_failure;
return nla_nest_end(skb, opts);
diff --git a/net/sched/sch_mqprio.c b/net/sched/sch_mqprio.c
index 225353fbb3..51d4013b61 100644
--- a/net/sched/sch_mqprio.c
+++ b/net/sched/sch_mqprio.c
@@ -215,10 +215,8 @@ static int mqprio_parse_tc_entries(struct Qdisc *sch, struct nlattr *nlattr_opt,
for (tc = 0; tc < TC_QOPT_MAX_QUEUE; tc++)
fp[tc] = priv->fp[tc];
- nla_for_each_attr(n, nlattr_opt, nlattr_opt_len, rem) {
- if (nla_type(n) != TCA_MQPRIO_TC_ENTRY)
- continue;
-
+ nla_for_each_attr_type(n, TCA_MQPRIO_TC_ENTRY, nlattr_opt,
+ nlattr_opt_len, rem) {
err = mqprio_parse_tc_entry(fp, n, &seen_tcs, extack);
if (err)
goto out;
diff --git a/net/sched/sch_pie.c b/net/sched/sch_pie.c
index 1764059b06..b3dcb845b3 100644
--- a/net/sched/sch_pie.c
+++ b/net/sched/sch_pie.c
@@ -156,36 +156,38 @@ static int pie_change(struct Qdisc *sch, struct nlattr *opt,
u32 target = nla_get_u32(tb[TCA_PIE_TARGET]);
/* convert to pschedtime */
- q->params.target = PSCHED_NS2TICKS((u64)target * NSEC_PER_USEC);
+ WRITE_ONCE(q->params.target,
+ PSCHED_NS2TICKS((u64)target * NSEC_PER_USEC));
}
/* tupdate is in jiffies */
if (tb[TCA_PIE_TUPDATE])
- q->params.tupdate =
- usecs_to_jiffies(nla_get_u32(tb[TCA_PIE_TUPDATE]));
+ WRITE_ONCE(q->params.tupdate,
+ usecs_to_jiffies(nla_get_u32(tb[TCA_PIE_TUPDATE])));
if (tb[TCA_PIE_LIMIT]) {
u32 limit = nla_get_u32(tb[TCA_PIE_LIMIT]);
- q->params.limit = limit;
- sch->limit = limit;
+ WRITE_ONCE(q->params.limit, limit);
+ WRITE_ONCE(sch->limit, limit);
}
if (tb[TCA_PIE_ALPHA])
- q->params.alpha = nla_get_u32(tb[TCA_PIE_ALPHA]);
+ WRITE_ONCE(q->params.alpha, nla_get_u32(tb[TCA_PIE_ALPHA]));
if (tb[TCA_PIE_BETA])
- q->params.beta = nla_get_u32(tb[TCA_PIE_BETA]);
+ WRITE_ONCE(q->params.beta, nla_get_u32(tb[TCA_PIE_BETA]));
if (tb[TCA_PIE_ECN])
- q->params.ecn = nla_get_u32(tb[TCA_PIE_ECN]);
+ WRITE_ONCE(q->params.ecn, nla_get_u32(tb[TCA_PIE_ECN]));
if (tb[TCA_PIE_BYTEMODE])
- q->params.bytemode = nla_get_u32(tb[TCA_PIE_BYTEMODE]);
+ WRITE_ONCE(q->params.bytemode,
+ nla_get_u32(tb[TCA_PIE_BYTEMODE]));
if (tb[TCA_PIE_DQ_RATE_ESTIMATOR])
- q->params.dq_rate_estimator =
- nla_get_u32(tb[TCA_PIE_DQ_RATE_ESTIMATOR]);
+ WRITE_ONCE(q->params.dq_rate_estimator,
+ nla_get_u32(tb[TCA_PIE_DQ_RATE_ESTIMATOR]));
/* Drop excess packets if new limit is lower */
qlen = sch->q.qlen;
@@ -469,17 +471,18 @@ static int pie_dump(struct Qdisc *sch, struct sk_buff *skb)
/* convert target from pschedtime to us */
if (nla_put_u32(skb, TCA_PIE_TARGET,
- ((u32)PSCHED_TICKS2NS(q->params.target)) /
+ ((u32)PSCHED_TICKS2NS(READ_ONCE(q->params.target))) /
NSEC_PER_USEC) ||
- nla_put_u32(skb, TCA_PIE_LIMIT, sch->limit) ||
+ nla_put_u32(skb, TCA_PIE_LIMIT, READ_ONCE(sch->limit)) ||
nla_put_u32(skb, TCA_PIE_TUPDATE,
- jiffies_to_usecs(q->params.tupdate)) ||
- nla_put_u32(skb, TCA_PIE_ALPHA, q->params.alpha) ||
- nla_put_u32(skb, TCA_PIE_BETA, q->params.beta) ||
+ jiffies_to_usecs(READ_ONCE(q->params.tupdate))) ||
+ nla_put_u32(skb, TCA_PIE_ALPHA, READ_ONCE(q->params.alpha)) ||
+ nla_put_u32(skb, TCA_PIE_BETA, READ_ONCE(q->params.beta)) ||
nla_put_u32(skb, TCA_PIE_ECN, q->params.ecn) ||
- nla_put_u32(skb, TCA_PIE_BYTEMODE, q->params.bytemode) ||
+ nla_put_u32(skb, TCA_PIE_BYTEMODE,
+ READ_ONCE(q->params.bytemode)) ||
nla_put_u32(skb, TCA_PIE_DQ_RATE_ESTIMATOR,
- q->params.dq_rate_estimator))
+ READ_ONCE(q->params.dq_rate_estimator)))
goto nla_put_failure;
return nla_nest_end(skb, opts);
diff --git a/net/sched/sch_sfq.c b/net/sched/sch_sfq.c
index e66f4afb92..3b9245a3c7 100644
--- a/net/sched/sch_sfq.c
+++ b/net/sched/sch_sfq.c
@@ -608,6 +608,7 @@ static void sfq_perturbation(struct timer_list *t)
struct Qdisc *sch = q->sch;
spinlock_t *root_lock;
siphash_key_t nkey;
+ int period;
get_random_bytes(&nkey, sizeof(nkey));
rcu_read_lock();
@@ -618,8 +619,12 @@ static void sfq_perturbation(struct timer_list *t)
sfq_rehash(sch);
spin_unlock(root_lock);
- if (q->perturb_period)
- mod_timer(&q->perturb_timer, jiffies + q->perturb_period);
+ /* q->perturb_period can change under us from
+ * sfq_change() and sfq_destroy().
+ */
+ period = READ_ONCE(q->perturb_period);
+ if (period)
+ mod_timer(&q->perturb_timer, jiffies + period);
rcu_read_unlock();
}
@@ -662,7 +667,7 @@ static int sfq_change(struct Qdisc *sch, struct nlattr *opt)
q->quantum = ctl->quantum;
q->scaled_quantum = SFQ_ALLOT_SIZE(q->quantum);
}
- q->perturb_period = ctl->perturb_period * HZ;
+ WRITE_ONCE(q->perturb_period, ctl->perturb_period * HZ);
if (ctl->flows)
q->maxflows = min_t(u32, ctl->flows, SFQ_MAX_FLOWS);
if (ctl->divisor) {
@@ -724,7 +729,7 @@ static void sfq_destroy(struct Qdisc *sch)
struct sfq_sched_data *q = qdisc_priv(sch);
tcf_block_put(q->block);
- q->perturb_period = 0;
+ WRITE_ONCE(q->perturb_period, 0);
del_timer_sync(&q->perturb_timer);
sfq_free(q->ht);
sfq_free(q->slots);
diff --git a/net/sched/sch_skbprio.c b/net/sched/sch_skbprio.c
index b4dd626c30..20ff7386b7 100644
--- a/net/sched/sch_skbprio.c
+++ b/net/sched/sch_skbprio.c
@@ -79,7 +79,9 @@ static int skbprio_enqueue(struct sk_buff *skb, struct Qdisc *sch,
prio = min(skb->priority, max_priority);
qdisc = &q->qdiscs[prio];
- if (sch->q.qlen < sch->limit) {
+
+ /* sch->limit can change under us from skbprio_change() */
+ if (sch->q.qlen < READ_ONCE(sch->limit)) {
__skb_queue_tail(qdisc, skb);
qdisc_qstats_backlog_inc(sch, skb);
q->qstats[prio].backlog += qdisc_pkt_len(skb);
@@ -172,7 +174,7 @@ static int skbprio_change(struct Qdisc *sch, struct nlattr *opt,
if (opt->nla_len != nla_attr_size(sizeof(*ctl)))
return -EINVAL;
- sch->limit = ctl->limit;
+ WRITE_ONCE(sch->limit, ctl->limit);
return 0;
}
@@ -200,7 +202,7 @@ static int skbprio_dump(struct Qdisc *sch, struct sk_buff *skb)
{
struct tc_skbprio_qopt opt;
- opt.limit = sch->limit;
+ opt.limit = READ_ONCE(sch->limit);
if (nla_put(skb, TCA_OPTIONS, sizeof(opt), &opt))
return -1;
diff --git a/net/sched/sch_taprio.c b/net/sched/sch_taprio.c
index 0b150b13be..b284a06b5a 100644
--- a/net/sched/sch_taprio.c
+++ b/net/sched/sch_taprio.c
@@ -1749,10 +1749,7 @@ static int taprio_parse_tc_entries(struct Qdisc *sch,
fp[tc] = q->fp[tc];
}
- nla_for_each_nested(n, opt, rem) {
- if (nla_type(n) != TCA_TAPRIO_ATTR_TC_ENTRY)
- continue;
-
+ nla_for_each_nested_type(n, TCA_TAPRIO_ATTR_TC_ENTRY, opt, rem) {
err = taprio_parse_tc_entry(sch, n, max_sdu, fp, &seen_tcs,
extack);
if (err)
diff --git a/net/sched/sch_teql.c b/net/sched/sch_teql.c
index 59304611dc..8badec6d82 100644
--- a/net/sched/sch_teql.c
+++ b/net/sched/sch_teql.c
@@ -78,7 +78,7 @@ teql_enqueue(struct sk_buff *skb, struct Qdisc *sch, struct sk_buff **to_free)
struct net_device *dev = qdisc_dev(sch);
struct teql_sched_data *q = qdisc_priv(sch);
- if (q->q.qlen < dev->tx_queue_len) {
+ if (q->q.qlen < READ_ONCE(dev->tx_queue_len)) {
__skb_queue_tail(&q->q, skb);
return NET_XMIT_SUCCESS;
}
@@ -424,7 +424,7 @@ static int teql_master_mtu(struct net_device *dev, int new_mtu)
} while ((q = NEXT_SLAVE(q)) != m->slaves);
}
- dev->mtu = new_mtu;
+ WRITE_ONCE(dev->mtu, new_mtu);
return 0;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-26 08:51:17 +0000