This is a note to let you know that I've just added the patch titled
ipv6: Remove in6addr_any alternatives.
to the 6.1-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
ipv6-remove-in6addr_any-alternatives.patch
and it can be found in the queue-6.1 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 0031bc8af9f275c515962c73462583941ada89b5
Author: Kuniyuki Iwashima <kuniyu@xxxxxxxxxx>
Date: Mon Mar 27 16:54:54 2023 -0700
ipv6: Remove in6addr_any alternatives.
[ Upstream commit 8cdc3223e78c43e1b60ea1c536a103e32fdca3c5 ]
Some code defines the IPv6 wildcard address as a local variable and
use it with memcmp() or ipv6_addr_equal().
Let's use in6addr_any and ipv6_addr_any() instead.
Signed-off-by: Kuniyuki Iwashima <kuniyu@xxxxxxxxxx>
Reviewed-by: Mark Bloch <mbloch@xxxxxxxxxx>
Reviewed-by: David Ahern <dsahern@xxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Stable-dep-of: aa99e5f87bd5 ("tcp: Fix bind() regression for v4-mapped-v6 wildcard address.")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun_encap.c b/drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun_encap.c
index 72b61f66df37a..cd15d36b1507e 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun_encap.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun_encap.c
@@ -97,7 +97,6 @@ int mlx5e_tc_set_attr_rx_tun(struct mlx5e_tc_flow *flow,
#if IS_ENABLED(CONFIG_INET) && IS_ENABLED(CONFIG_IPV6)
else if (ip_version == 6) {
int ipv6_size = MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6);
- struct in6_addr zerov6 = {};
daddr = MLX5_ADDR_OF(fte_match_param, spec->match_value,
outer_headers.dst_ipv4_dst_ipv6.ipv6_layout.ipv6);
@@ -105,8 +104,8 @@ int mlx5e_tc_set_attr_rx_tun(struct mlx5e_tc_flow *flow,
outer_headers.src_ipv4_src_ipv6.ipv6_layout.ipv6);
memcpy(&tun_attr->dst_ip.v6, daddr, ipv6_size);
memcpy(&tun_attr->src_ip.v6, saddr, ipv6_size);
- if (!memcmp(&tun_attr->dst_ip.v6, &zerov6, sizeof(zerov6)) ||
- !memcmp(&tun_attr->src_ip.v6, &zerov6, sizeof(zerov6)))
+ if (ipv6_addr_any(&tun_attr->dst_ip.v6) ||
+ ipv6_addr_any(&tun_attr->src_ip.v6))
return 0;
}
#endif
diff --git a/include/net/ip6_fib.h b/include/net/ip6_fib.h
index a92f6eb853068..fa4e6af382e2a 100644
--- a/include/net/ip6_fib.h
+++ b/include/net/ip6_fib.h
@@ -472,13 +472,10 @@ void rt6_get_prefsrc(const struct rt6_info *rt, struct in6_addr *addr)
rcu_read_lock();
from = rcu_dereference(rt->from);
- if (from) {
+ if (from)
*addr = from->fib6_prefsrc.addr;
- } else {
- struct in6_addr in6_zero = {};
-
- *addr = in6_zero;
- }
+ else
+ *addr = in6addr_any;
rcu_read_unlock();
}
diff --git a/include/trace/events/fib.h b/include/trace/events/fib.h
index c2300c407f583..76297ecd4935c 100644
--- a/include/trace/events/fib.h
+++ b/include/trace/events/fib.h
@@ -36,7 +36,6 @@ TRACE_EVENT(fib_table_lookup,
),
TP_fast_assign(
- struct in6_addr in6_zero = {};
struct net_device *dev;
struct in6_addr *in6;
__be32 *p32;
@@ -74,7 +73,7 @@ TRACE_EVENT(fib_table_lookup,
*p32 = nhc->nhc_gw.ipv4;
in6 = (struct in6_addr *)__entry->gw6;
- *in6 = in6_zero;
+ *in6 = in6addr_any;
} else if (nhc->nhc_gw_family == AF_INET6) {
p32 = (__be32 *) __entry->gw4;
*p32 = 0;
@@ -87,7 +86,7 @@ TRACE_EVENT(fib_table_lookup,
*p32 = 0;
in6 = (struct in6_addr *)__entry->gw6;
- *in6 = in6_zero;
+ *in6 = in6addr_any;
}
),
diff --git a/include/trace/events/fib6.h b/include/trace/events/fib6.h
index 6e821eb794503..4d3e607b3cdec 100644
--- a/include/trace/events/fib6.h
+++ b/include/trace/events/fib6.h
@@ -68,11 +68,8 @@ TRACE_EVENT(fib6_table_lookup,
strcpy(__entry->name, "-");
}
if (res->f6i == net->ipv6.fib6_null_entry) {
- struct in6_addr in6_zero = {};
-
in6 = (struct in6_addr *)__entry->gw;
- *in6 = in6_zero;
-
+ *in6 = in6addr_any;
} else if (res->nh) {
in6 = (struct in6_addr *)__entry->gw;
*in6 = res->nh->fib_nh_gw6;
diff --git a/net/ethtool/ioctl.c b/net/ethtool/ioctl.c
index 940c0e27be735..e31d1247b9f08 100644
--- a/net/ethtool/ioctl.c
+++ b/net/ethtool/ioctl.c
@@ -27,6 +27,7 @@
#include <linux/net.h>
#include <linux/pm_runtime.h>
#include <net/devlink.h>
+#include <net/ipv6.h>
#include <net/xdp_sock_drv.h>
#include <net/flow_offload.h>
#include <linux/ethtool_netlink.h>
@@ -3090,7 +3091,6 @@ struct ethtool_rx_flow_rule *
ethtool_rx_flow_rule_create(const struct ethtool_rx_flow_spec_input *input)
{
const struct ethtool_rx_flow_spec *fs = input->fs;
- static struct in6_addr zero_addr = {};
struct ethtool_rx_flow_match *match;
struct ethtool_rx_flow_rule *flow;
struct flow_action_entry *act;
@@ -3196,20 +3196,20 @@ ethtool_rx_flow_rule_create(const struct ethtool_rx_flow_spec_input *input)
v6_spec = &fs->h_u.tcp_ip6_spec;
v6_m_spec = &fs->m_u.tcp_ip6_spec;
- if (memcmp(v6_m_spec->ip6src, &zero_addr, sizeof(zero_addr))) {
+ if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6src)) {
memcpy(&match->key.ipv6.src, v6_spec->ip6src,
sizeof(match->key.ipv6.src));
memcpy(&match->mask.ipv6.src, v6_m_spec->ip6src,
sizeof(match->mask.ipv6.src));
}
- if (memcmp(v6_m_spec->ip6dst, &zero_addr, sizeof(zero_addr))) {
+ if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6dst)) {
memcpy(&match->key.ipv6.dst, v6_spec->ip6dst,
sizeof(match->key.ipv6.dst));
memcpy(&match->mask.ipv6.dst, v6_m_spec->ip6dst,
sizeof(match->mask.ipv6.dst));
}
- if (memcmp(v6_m_spec->ip6src, &zero_addr, sizeof(zero_addr)) ||
- memcmp(v6_m_spec->ip6dst, &zero_addr, sizeof(zero_addr))) {
+ if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6src) ||
+ !ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6dst)) {
match->dissector.used_keys |=
BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS);
match->dissector.offset[FLOW_DISSECTOR_KEY_IPV6_ADDRS] =
diff --git a/net/ipv4/inet_hashtables.c b/net/ipv4/inet_hashtables.c
index c19b462662ad0..38a92c8c66863 100644
--- a/net/ipv4/inet_hashtables.c
+++ b/net/ipv4/inet_hashtables.c
@@ -813,13 +813,11 @@ bool inet_bind2_bucket_match_addr_any(const struct inet_bind2_bucket *tb, const
unsigned short port, int l3mdev, const struct sock *sk)
{
#if IS_ENABLED(CONFIG_IPV6)
- struct in6_addr addr_any = {};
-
if (sk->sk_family != tb->family) {
if (sk->sk_family == AF_INET)
return net_eq(ib2_net(tb), net) && tb->port == port &&
tb->l3mdev == l3mdev &&
- ipv6_addr_equal(&tb->v6_rcv_saddr, &addr_any);
+ ipv6_addr_any(&tb->v6_rcv_saddr);
return false;
}
@@ -827,7 +825,7 @@ bool inet_bind2_bucket_match_addr_any(const struct inet_bind2_bucket *tb, const
if (sk->sk_family == AF_INET6)
return net_eq(ib2_net(tb), net) && tb->port == port &&
tb->l3mdev == l3mdev &&
- ipv6_addr_equal(&tb->v6_rcv_saddr, &addr_any);
+ ipv6_addr_any(&tb->v6_rcv_saddr);
else
#endif
return net_eq(ib2_net(tb), net) && tb->port == port &&
@@ -853,11 +851,10 @@ inet_bhash2_addr_any_hashbucket(const struct sock *sk, const struct net *net, in
{
struct inet_hashinfo *hinfo = tcp_or_dccp_get_hashinfo(sk);
u32 hash;
-#if IS_ENABLED(CONFIG_IPV6)
- struct in6_addr addr_any = {};
+#if IS_ENABLED(CONFIG_IPV6)
if (sk->sk_family == AF_INET6)
- hash = ipv6_portaddr_hash(net, &addr_any, port);
+ hash = ipv6_portaddr_hash(net, &in6addr_any, port);
else
#endif
hash = ipv4_portaddr_hash(net, 0, port);
