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-rw-r--r--net/ipv6/ila/ila_lwt.c7
-rw-r--r--net/ipv6/ioam6_iptunnel.c8
-rw-r--r--net/ipv6/ip6_fib.c6
-rw-r--r--net/ipv6/ip6_offload.c2
-rw-r--r--net/ipv6/route.c35
-rw-r--r--net/ipv6/rpl_iptunnel.c14
-rw-r--r--net/ipv6/seg6_hmac.c42
-rw-r--r--net/ipv6/seg6_iptunnel.c25
-rw-r--r--net/ipv6/tcp_ipv6.c7
9 files changed, 83 insertions, 63 deletions
diff --git a/net/ipv6/ila/ila_lwt.c b/net/ipv6/ila/ila_lwt.c
index 0601bad79822..ff7e734e335b 100644
--- a/net/ipv6/ila/ila_lwt.c
+++ b/net/ipv6/ila/ila_lwt.c
@@ -58,7 +58,9 @@ static int ila_output(struct net *net, struct sock *sk, struct sk_buff *skb)
return orig_dst->lwtstate->orig_output(net, sk, skb);
}
+ local_bh_disable();
dst = dst_cache_get(&ilwt->dst_cache);
+ local_bh_enable();
if (unlikely(!dst)) {
struct ipv6hdr *ip6h = ipv6_hdr(skb);
struct flowi6 fl6;
@@ -86,8 +88,11 @@ static int ila_output(struct net *net, struct sock *sk, struct sk_buff *skb)
goto drop;
}
- if (ilwt->connected)
+ if (ilwt->connected) {
+ local_bh_disable();
dst_cache_set_ip6(&ilwt->dst_cache, dst, &fl6.saddr);
+ local_bh_enable();
+ }
}
skb_dst_set(skb, dst);
diff --git a/net/ipv6/ioam6_iptunnel.c b/net/ipv6/ioam6_iptunnel.c
index 7563f8c6aa87..bf7120ecea1e 100644
--- a/net/ipv6/ioam6_iptunnel.c
+++ b/net/ipv6/ioam6_iptunnel.c
@@ -351,9 +351,9 @@ do_encap:
goto drop;
if (!ipv6_addr_equal(&orig_daddr, &ipv6_hdr(skb)->daddr)) {
- preempt_disable();
+ local_bh_disable();
dst = dst_cache_get(&ilwt->cache);
- preempt_enable();
+ local_bh_enable();
if (unlikely(!dst)) {
struct ipv6hdr *hdr = ipv6_hdr(skb);
@@ -373,9 +373,9 @@ do_encap:
goto drop;
}
- preempt_disable();
+ local_bh_disable();
dst_cache_set_ip6(&ilwt->cache, dst, &fl6.saddr);
- preempt_enable();
+ local_bh_enable();
}
skb_dst_drop(skb);
diff --git a/net/ipv6/ip6_fib.c b/net/ipv6/ip6_fib.c
index 31d77885bcae..6e57c03e3255 100644
--- a/net/ipv6/ip6_fib.c
+++ b/net/ipv6/ip6_fib.c
@@ -966,6 +966,7 @@ static void __fib6_drop_pcpu_from(struct fib6_nh *fib6_nh,
if (!fib6_nh->rt6i_pcpu)
return;
+ rcu_read_lock();
/* release the reference to this fib entry from
* all of its cached pcpu routes
*/
@@ -974,7 +975,9 @@ static void __fib6_drop_pcpu_from(struct fib6_nh *fib6_nh,
struct rt6_info *pcpu_rt;
ppcpu_rt = per_cpu_ptr(fib6_nh->rt6i_pcpu, cpu);
- pcpu_rt = *ppcpu_rt;
+
+ /* Paired with xchg() in rt6_get_pcpu_route() */
+ pcpu_rt = READ_ONCE(*ppcpu_rt);
/* only dropping the 'from' reference if the cached route
* is using 'match'. The cached pcpu_rt->from only changes
@@ -988,6 +991,7 @@ static void __fib6_drop_pcpu_from(struct fib6_nh *fib6_nh,
fib6_info_release(from);
}
}
+ rcu_read_unlock();
}
struct fib6_nh_pcpu_arg {
diff --git a/net/ipv6/ip6_offload.c b/net/ipv6/ip6_offload.c
index bd5aff97d8b1..9822163428b0 100644
--- a/net/ipv6/ip6_offload.c
+++ b/net/ipv6/ip6_offload.c
@@ -236,7 +236,7 @@ INDIRECT_CALLABLE_SCOPE struct sk_buff *ipv6_gro_receive(struct list_head *head,
if (unlikely(!iph))
goto out;
- NAPI_GRO_CB(skb)->inner_network_offset = off;
+ NAPI_GRO_CB(skb)->network_offsets[NAPI_GRO_CB(skb)->encap_mark] = off;
flush += ntohs(iph->payload_len) != skb->len - hlen;
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index c43b0616742e..f083d9faba6b 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -87,7 +87,8 @@ struct dst_entry *ip6_dst_check(struct dst_entry *dst, u32 cookie);
static unsigned int ip6_default_advmss(const struct dst_entry *dst);
INDIRECT_CALLABLE_SCOPE
unsigned int ip6_mtu(const struct dst_entry *dst);
-static struct dst_entry *ip6_negative_advice(struct dst_entry *);
+static void ip6_negative_advice(struct sock *sk,
+ struct dst_entry *dst);
static void ip6_dst_destroy(struct dst_entry *);
static void ip6_dst_ifdown(struct dst_entry *,
struct net_device *dev);
@@ -1408,6 +1409,7 @@ static struct rt6_info *rt6_get_pcpu_route(const struct fib6_result *res)
struct rt6_info *prev, **p;
p = this_cpu_ptr(res->nh->rt6i_pcpu);
+ /* Paired with READ_ONCE() in __fib6_drop_pcpu_from() */
prev = xchg(p, NULL);
if (prev) {
dst_dev_put(&prev->dst);
@@ -2770,24 +2772,24 @@ INDIRECT_CALLABLE_SCOPE struct dst_entry *ip6_dst_check(struct dst_entry *dst,
}
EXPORT_INDIRECT_CALLABLE(ip6_dst_check);
-static struct dst_entry *ip6_negative_advice(struct dst_entry *dst)
+static void ip6_negative_advice(struct sock *sk,
+ struct dst_entry *dst)
{
struct rt6_info *rt = dst_rt6_info(dst);
- if (rt) {
- if (rt->rt6i_flags & RTF_CACHE) {
- rcu_read_lock();
- if (rt6_check_expired(rt)) {
- rt6_remove_exception_rt(rt);
- dst = NULL;
- }
- rcu_read_unlock();
- } else {
- dst_release(dst);
- dst = NULL;
+ if (rt->rt6i_flags & RTF_CACHE) {
+ rcu_read_lock();
+ if (rt6_check_expired(rt)) {
+ /* counteract the dst_release() in sk_dst_reset() */
+ dst_hold(dst);
+ sk_dst_reset(sk);
+
+ rt6_remove_exception_rt(rt);
}
+ rcu_read_unlock();
+ return;
}
- return dst;
+ sk_dst_reset(sk);
}
static void ip6_link_failure(struct sk_buff *skb)
@@ -4445,7 +4447,7 @@ static void rtmsg_to_fib6_config(struct net *net,
.fc_table = l3mdev_fib_table_by_index(net, rtmsg->rtmsg_ifindex) ?
: RT6_TABLE_MAIN,
.fc_ifindex = rtmsg->rtmsg_ifindex,
- .fc_metric = rtmsg->rtmsg_metric ? : IP6_RT_PRIO_USER,
+ .fc_metric = rtmsg->rtmsg_metric,
.fc_expires = rtmsg->rtmsg_info,
.fc_dst_len = rtmsg->rtmsg_dst_len,
.fc_src_len = rtmsg->rtmsg_src_len,
@@ -4475,6 +4477,9 @@ int ipv6_route_ioctl(struct net *net, unsigned int cmd, struct in6_rtmsg *rtmsg)
rtnl_lock();
switch (cmd) {
case SIOCADDRT:
+ /* Only do the default setting of fc_metric in route adding */
+ if (cfg.fc_metric == 0)
+ cfg.fc_metric = IP6_RT_PRIO_USER;
err = ip6_route_add(&cfg, GFP_KERNEL, NULL);
break;
case SIOCDELRT:
diff --git a/net/ipv6/rpl_iptunnel.c b/net/ipv6/rpl_iptunnel.c
index a013b92cbb86..2c83b7586422 100644
--- a/net/ipv6/rpl_iptunnel.c
+++ b/net/ipv6/rpl_iptunnel.c
@@ -212,9 +212,9 @@ static int rpl_output(struct net *net, struct sock *sk, struct sk_buff *skb)
if (unlikely(err))
goto drop;
- preempt_disable();
+ local_bh_disable();
dst = dst_cache_get(&rlwt->cache);
- preempt_enable();
+ local_bh_enable();
if (unlikely(!dst)) {
struct ipv6hdr *hdr = ipv6_hdr(skb);
@@ -234,9 +234,9 @@ static int rpl_output(struct net *net, struct sock *sk, struct sk_buff *skb)
goto drop;
}
- preempt_disable();
+ local_bh_disable();
dst_cache_set_ip6(&rlwt->cache, dst, &fl6.saddr);
- preempt_enable();
+ local_bh_enable();
}
skb_dst_drop(skb);
@@ -268,23 +268,21 @@ static int rpl_input(struct sk_buff *skb)
return err;
}
- preempt_disable();
+ local_bh_disable();
dst = dst_cache_get(&rlwt->cache);
- preempt_enable();
if (!dst) {
ip6_route_input(skb);
dst = skb_dst(skb);
if (!dst->error) {
- preempt_disable();
dst_cache_set_ip6(&rlwt->cache, dst,
&ipv6_hdr(skb)->saddr);
- preempt_enable();
}
} else {
skb_dst_drop(skb);
skb_dst_set(skb, dst);
}
+ local_bh_enable();
err = skb_cow_head(skb, LL_RESERVED_SPACE(dst->dev));
if (unlikely(err))
diff --git a/net/ipv6/seg6_hmac.c b/net/ipv6/seg6_hmac.c
index 861e0366f549..bbf5b84a70fc 100644
--- a/net/ipv6/seg6_hmac.c
+++ b/net/ipv6/seg6_hmac.c
@@ -356,6 +356,7 @@ static int seg6_hmac_init_algo(void)
struct crypto_shash *tfm;
struct shash_desc *shash;
int i, alg_count, cpu;
+ int ret = -ENOMEM;
alg_count = ARRAY_SIZE(hmac_algos);
@@ -366,12 +367,14 @@ static int seg6_hmac_init_algo(void)
algo = &hmac_algos[i];
algo->tfms = alloc_percpu(struct crypto_shash *);
if (!algo->tfms)
- return -ENOMEM;
+ goto error_out;
for_each_possible_cpu(cpu) {
tfm = crypto_alloc_shash(algo->name, 0, 0);
- if (IS_ERR(tfm))
- return PTR_ERR(tfm);
+ if (IS_ERR(tfm)) {
+ ret = PTR_ERR(tfm);
+ goto error_out;
+ }
p_tfm = per_cpu_ptr(algo->tfms, cpu);
*p_tfm = tfm;
}
@@ -383,18 +386,22 @@ static int seg6_hmac_init_algo(void)
algo->shashs = alloc_percpu(struct shash_desc *);
if (!algo->shashs)
- return -ENOMEM;
+ goto error_out;
for_each_possible_cpu(cpu) {
shash = kzalloc_node(shsize, GFP_KERNEL,
cpu_to_node(cpu));
if (!shash)
- return -ENOMEM;
+ goto error_out;
*per_cpu_ptr(algo->shashs, cpu) = shash;
}
}
return 0;
+
+error_out:
+ seg6_hmac_exit();
+ return ret;
}
int __init seg6_hmac_init(void)
@@ -412,22 +419,29 @@ int __net_init seg6_hmac_net_init(struct net *net)
void seg6_hmac_exit(void)
{
struct seg6_hmac_algo *algo = NULL;
+ struct crypto_shash *tfm;
+ struct shash_desc *shash;
int i, alg_count, cpu;
alg_count = ARRAY_SIZE(hmac_algos);
for (i = 0; i < alg_count; i++) {
algo = &hmac_algos[i];
- for_each_possible_cpu(cpu) {
- struct crypto_shash *tfm;
- struct shash_desc *shash;
- shash = *per_cpu_ptr(algo->shashs, cpu);
- kfree(shash);
- tfm = *per_cpu_ptr(algo->tfms, cpu);
- crypto_free_shash(tfm);
+ if (algo->shashs) {
+ for_each_possible_cpu(cpu) {
+ shash = *per_cpu_ptr(algo->shashs, cpu);
+ kfree(shash);
+ }
+ free_percpu(algo->shashs);
+ }
+
+ if (algo->tfms) {
+ for_each_possible_cpu(cpu) {
+ tfm = *per_cpu_ptr(algo->tfms, cpu);
+ crypto_free_shash(tfm);
+ }
+ free_percpu(algo->tfms);
}
- free_percpu(algo->tfms);
- free_percpu(algo->shashs);
}
}
EXPORT_SYMBOL(seg6_hmac_exit);
diff --git a/net/ipv6/seg6_iptunnel.c b/net/ipv6/seg6_iptunnel.c
index 03b877ff4558..098632adc9b5 100644
--- a/net/ipv6/seg6_iptunnel.c
+++ b/net/ipv6/seg6_iptunnel.c
@@ -459,34 +459,30 @@ static int seg6_input_core(struct net *net, struct sock *sk,
int err;
err = seg6_do_srh(skb);
- if (unlikely(err)) {
- kfree_skb(skb);
- return err;
- }
+ if (unlikely(err))
+ goto drop;
slwt = seg6_lwt_lwtunnel(orig_dst->lwtstate);
- preempt_disable();
+ local_bh_disable();
dst = dst_cache_get(&slwt->cache);
- preempt_enable();
if (!dst) {
ip6_route_input(skb);
dst = skb_dst(skb);
if (!dst->error) {
- preempt_disable();
dst_cache_set_ip6(&slwt->cache, dst,
&ipv6_hdr(skb)->saddr);
- preempt_enable();
}
} else {
skb_dst_drop(skb);
skb_dst_set(skb, dst);
}
+ local_bh_enable();
err = skb_cow_head(skb, LL_RESERVED_SPACE(dst->dev));
if (unlikely(err))
- return err;
+ goto drop;
if (static_branch_unlikely(&nf_hooks_lwtunnel_enabled))
return NF_HOOK(NFPROTO_IPV6, NF_INET_LOCAL_OUT,
@@ -494,6 +490,9 @@ static int seg6_input_core(struct net *net, struct sock *sk,
skb_dst(skb)->dev, seg6_input_finish);
return seg6_input_finish(dev_net(skb->dev), NULL, skb);
+drop:
+ kfree_skb(skb);
+ return err;
}
static int seg6_input_nf(struct sk_buff *skb)
@@ -535,9 +534,9 @@ static int seg6_output_core(struct net *net, struct sock *sk,
slwt = seg6_lwt_lwtunnel(orig_dst->lwtstate);
- preempt_disable();
+ local_bh_disable();
dst = dst_cache_get(&slwt->cache);
- preempt_enable();
+ local_bh_enable();
if (unlikely(!dst)) {
struct ipv6hdr *hdr = ipv6_hdr(skb);
@@ -557,9 +556,9 @@ static int seg6_output_core(struct net *net, struct sock *sk,
goto drop;
}
- preempt_disable();
+ local_bh_disable();
dst_cache_set_ip6(&slwt->cache, dst, &fl6.saddr);
- preempt_enable();
+ local_bh_enable();
}
skb_dst_drop(skb);
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index 4c3605485b68..8c577b651bfc 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -1272,15 +1272,10 @@ static void tcp_v6_reqsk_send_ack(const struct sock *sk, struct sk_buff *skb,
/* sk->sk_state == TCP_LISTEN -> for regular TCP_SYN_RECV
* sk->sk_state == TCP_SYN_RECV -> for Fast Open.
*/
- /* RFC 7323 2.3
- * The window field (SEG.WND) of every outgoing segment, with the
- * exception of <SYN> segments, MUST be right-shifted by
- * Rcv.Wind.Shift bits:
- */
tcp_v6_send_ack(sk, skb, (sk->sk_state == TCP_LISTEN) ?
tcp_rsk(req)->snt_isn + 1 : tcp_sk(sk)->snd_nxt,
tcp_rsk(req)->rcv_nxt,
- req->rsk_rcv_wnd >> inet_rsk(req)->rcv_wscale,
+ tcp_synack_window(req) >> inet_rsk(req)->rcv_wscale,
tcp_rsk_tsval(tcp_rsk(req)),
READ_ONCE(req->ts_recent), sk->sk_bound_dev_if,
&key, ipv6_get_dsfield(ipv6_hdr(skb)), 0,
generated by cgit (git 2.34.1) at 2024-06-18 13:53:26 +0000