diff options
| author | Eric Dumazet <edumazet@google.com> | 2023-08-16 11:15:38 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2023-08-16 13:09:17 +0300 |
| commit | cafbe182a467bf6799242fd7468438cf1ab833dc (patch) | |
| tree | d6c57b53c808f8c43ce28c365c25d128fb4dd824 /net/ipv6 | |
| parent | 3f7e753206bb20fc098b44ec40001befd1fe18d1 (diff) | |
| download | linux-cafbe182a467bf6799242fd7468438cf1ab833dc.tar.xz | |
inet: move inet->hdrincl to inet->inet_flags
IP_HDRINCL socket option can now be set/read
without locking the socket.
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>
Diffstat (limited to 'net/ipv6')
| -rw-r--r-- | net/ipv6/af_inet6.c | 2 | ||||
| -rw-r--r-- | net/ipv6/ip6_output.c | 5 | ||||
| -rw-r--r-- | net/ipv6/raw.c | 16 |
3 files changed, 9 insertions, 14 deletions
diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c index 3ec0359d5c1f..ed9d207080ac 100644 --- a/net/ipv6/af_inet6.c +++ b/net/ipv6/af_inet6.c @@ -205,7 +205,7 @@ lookup_protocol: if (SOCK_RAW == sock->type) { inet->inet_num = protocol; if (IPPROTO_RAW == protocol) - inet->hdrincl = 1; + inet_set_bit(HDRINCL, sk); } sk->sk_destruct = inet6_sock_destruct; diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c index bc96559bbf0f..f8a1f6bb3f87 100644 --- a/net/ipv6/ip6_output.c +++ b/net/ipv6/ip6_output.c @@ -1591,7 +1591,7 @@ emsgsize: } } } else if ((flags & MSG_SPLICE_PAGES) && length) { - if (inet_sk(sk)->hdrincl) + if (inet_test_bit(HDRINCL, sk)) return -EPERM; if (rt->dst.dev->features & NETIF_F_SG && getfrag == ip_generic_getfrag) @@ -1995,7 +1995,8 @@ struct sk_buff *__ip6_make_skb(struct sock *sk, struct inet6_dev *idev = ip6_dst_idev(skb_dst(skb)); u8 icmp6_type; - if (sk->sk_socket->type == SOCK_RAW && !inet_sk(sk)->hdrincl) + if (sk->sk_socket->type == SOCK_RAW && + !inet_test_bit(HDRINCL, sk)) icmp6_type = fl6->fl6_icmp_type; else icmp6_type = icmp6_hdr(skb)->icmp6_type; diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c index ea16734f5e1f..0eae7661a85c 100644 --- a/net/ipv6/raw.c +++ b/net/ipv6/raw.c @@ -291,7 +291,6 @@ static void rawv6_err(struct sock *sk, struct sk_buff *skb, struct inet6_skb_parm *opt, u8 type, u8 code, int offset, __be32 info) { - struct inet_sock *inet = inet_sk(sk); struct ipv6_pinfo *np = inet6_sk(sk); int err; int harderr; @@ -315,7 +314,7 @@ static void rawv6_err(struct sock *sk, struct sk_buff *skb, } if (np->recverr) { u8 *payload = skb->data; - if (!inet->hdrincl) + if (!inet_test_bit(HDRINCL, sk)) payload += offset; ipv6_icmp_error(sk, skb, err, 0, ntohl(info), payload); } @@ -406,7 +405,7 @@ int rawv6_rcv(struct sock *sk, struct sk_buff *skb) skb->len, inet->inet_num, 0)); - if (inet->hdrincl) { + if (inet_test_bit(HDRINCL, sk)) { if (skb_checksum_complete(skb)) { atomic_inc(&sk->sk_drops); kfree_skb_reason(skb, SKB_DROP_REASON_SKB_CSUM); @@ -762,12 +761,7 @@ static int rawv6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len) if (msg->msg_flags & MSG_OOB) return -EOPNOTSUPP; - /* hdrincl should be READ_ONCE(inet->hdrincl) - * but READ_ONCE() doesn't work with bit fields. - * Doing this indirectly yields the same result. - */ - hdrincl = inet->hdrincl; - hdrincl = READ_ONCE(hdrincl); + hdrincl = inet_test_bit(HDRINCL, sk); /* * Get and verify the address. @@ -1000,7 +994,7 @@ static int do_rawv6_setsockopt(struct sock *sk, int level, int optname, case IPV6_HDRINCL: if (sk->sk_type != SOCK_RAW) return -EINVAL; - inet_sk(sk)->hdrincl = !!val; + inet_assign_bit(HDRINCL, sk, val); return 0; case IPV6_CHECKSUM: if (inet_sk(sk)->inet_num == IPPROTO_ICMPV6 && @@ -1068,7 +1062,7 @@ static int do_rawv6_getsockopt(struct sock *sk, int level, int optname, switch (optname) { case IPV6_HDRINCL: - val = inet_sk(sk)->hdrincl; + val = inet_test_bit(HDRINCL, sk); break; case IPV6_CHECKSUM: /* |