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inet: move inet->is_icsk to inet->inet_flags

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We move single bit fields to inet->inet_flags to avoid races.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Soheil Hassas Yeganeh <soheil@google.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2023-08-16 08:15:42 +00:00 committed by David S. Miller
parent 4bd0623f04
commit b1c0356a58
8 changed files with 13 additions and 14 deletions
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4
include/net/inet_connection_sock.h
View file

@ -342,9 +342,9 @@ static inline bool inet_csk_in_pingpong_mode(struct sock *sk)
return inet_csk(sk)->icsk_ack.pingpong >= TCP_PINGPONG_THRESH;
}
static inline bool inet_csk_has_ulp(struct sock *sk)
static inline bool inet_csk_has_ulp(const struct sock *sk)
{
return inet_sk(sk)->is_icsk && !!inet_csk(sk)->icsk_ulp_ops;
return inet_test_bit(IS_ICSK, sk) && !!inet_csk(sk)->icsk_ulp_ops;
}
#endif /* _INET_CONNECTION_SOCK_H */

5
include/net/inet_sock.h
View file

@ -201,7 +201,6 @@ struct rtable;
* @inet_id - ID counter for DF pkts
* @tos - TOS
* @mc_ttl - Multicasting TTL
* @is_icsk - is this an inet_connection_sock?
* @uc_index - Unicast outgoing device index
* @mc_index - Multicast device index
* @mc_list - Group array
@ -230,8 +229,7 @@ struct inet_sock {
__u8 min_ttl;
__u8 mc_ttl;
__u8 pmtudisc;
__u8 is_icsk:1,
nodefrag:1;
__u8 nodefrag:1;
__u8 bind_address_no_port:1,
defer_connect:1; /* Indicates that fastopen_connect is set
* and cookie exists so we defer connect
@ -271,6 +269,7 @@ enum {
INET_FLAGS_MC_LOOP = 13,
INET_FLAGS_MC_ALL = 14,
INET_FLAGS_TRANSPARENT = 15,
INET_FLAGS_IS_ICSK = 16,
};
/* cmsg flags for inet */

2
net/ipv4/af_inet.c
View file

@ -331,7 +331,7 @@ static int inet_create(struct net *net, struct socket *sock, int protocol,
sk->sk_reuse = SK_CAN_REUSE;
inet = inet_sk(sk);
inet->is_icsk = (INET_PROTOSW_ICSK & answer_flags) != 0;
inet_assign_bit(IS_ICSK, sk, INET_PROTOSW_ICSK & answer_flags);
inet->nodefrag = 0;

4
net/ipv4/cipso_ipv4.c
View file

@ -1881,7 +1881,7 @@ int cipso_v4_sock_setattr(struct sock *sk,
old = rcu_dereference_protected(sk_inet->inet_opt,
lockdep_sock_is_held(sk));
if (sk_inet->is_icsk) {
if (inet_test_bit(IS_ICSK, sk)) {
sk_conn = inet_csk(sk);
if (old)
sk_conn->icsk_ext_hdr_len -= old->opt.optlen;
@ -2051,7 +2051,7 @@ void cipso_v4_sock_delattr(struct sock *sk)
sk_inet = inet_sk(sk);
hdr_delta = cipso_v4_delopt(&sk_inet->inet_opt);
if (sk_inet->is_icsk && hdr_delta > 0) {
if (inet_test_bit(IS_ICSK, sk) && hdr_delta > 0) {
struct inet_connection_sock *sk_conn = inet_csk(sk);
sk_conn->icsk_ext_hdr_len -= hdr_delta;
sk_conn->icsk_sync_mss(sk, sk_conn->icsk_pmtu_cookie);

2
net/ipv4/inet_diag.c
View file

@ -183,7 +183,7 @@ int inet_diag_msg_attrs_fill(struct sock *sk, struct sk_buff *skb,
memset(&inet_sockopt, 0, sizeof(inet_sockopt));
inet_sockopt.recverr = inet_test_bit(RECVERR, sk);
inet_sockopt.is_icsk = inet->is_icsk;
inet_sockopt.is_icsk = inet_test_bit(IS_ICSK, sk);
inet_sockopt.freebind = inet_test_bit(FREEBIND, sk);
inet_sockopt.hdrincl = inet_test_bit(HDRINCL, sk);
inet_sockopt.mc_loop = inet_test_bit(MC_LOOP, sk);

4
net/ipv4/ip_sockglue.c
View file

@ -1034,7 +1034,7 @@ int do_ip_setsockopt(struct sock *sk, int level, int optname,
break;
old = rcu_dereference_protected(inet->inet_opt,
lockdep_sock_is_held(sk));
if (inet->is_icsk) {
if (inet_test_bit(IS_ICSK, sk)) {
struct inet_connection_sock *icsk = inet_csk(sk);
#if IS_ENABLED(CONFIG_IPV6)
if (sk->sk_family == PF_INET ||
@ -1209,7 +1209,7 @@ int do_ip_setsockopt(struct sock *sk, int level, int optname,
struct ip_mreqn mreq;
err = -EPROTO;
if (inet_sk(sk)->is_icsk)
if (inet_test_bit(IS_ICSK, sk))
break;
if (optlen < sizeof(struct ip_mreq))

2
net/ipv6/af_inet6.c
View file

@ -200,7 +200,7 @@ static int inet6_create(struct net *net, struct socket *sock, int protocol,
sk->sk_reuse = SK_CAN_REUSE;
inet = inet_sk(sk);
inet->is_icsk = (INET_PROTOSW_ICSK & answer_flags) != 0;
inet_assign_bit(IS_ICSK, sk, INET_PROTOSW_ICSK & answer_flags);
if (SOCK_RAW == sock->type) {
inet->inet_num = protocol;

4
net/ipv6/ipv6_sockglue.c
View file

@ -102,7 +102,7 @@ int ip6_ra_control(struct sock *sk, int sel)
struct ipv6_txoptions *ipv6_update_options(struct sock *sk,
struct ipv6_txoptions *opt)
{
if (inet_sk(sk)->is_icsk) {
if (inet_test_bit(IS_ICSK, sk)) {
if (opt &&
!((1 << sk->sk_state) & (TCPF_LISTEN | TCPF_CLOSE)) &&
inet_sk(sk)->inet_daddr != LOOPBACK4_IPV6) {
@ -831,7 +831,7 @@ int do_ipv6_setsockopt(struct sock *sk, int level, int optname,
goto e_inval;
retv = -EPROTO;
if (inet_sk(sk)->is_icsk)
if (inet_test_bit(IS_ICSK, sk))
break;
retv = -EFAULT;