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inet: Use fallthrough;

Browse Source 
Convert the various uses of fallthrough comments to fallthrough;

Done via script
Link: https://lore.kernel.org/lkml/b56602fcf79f849e733e7b521bb0e17895d390fa.1582230379.git.joe@perches.com/

And by hand:

net/ipv6/ip6_fib.c has a fallthrough comment outside of an #ifdef block
that causes gcc to emit a warning if converted in-place.

So move the new fallthrough; inside the containing #ifdef/#endif too.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Joe Perches 2020-03-12 15:50:22 -07:00 committed by David S. Miller
parent 8a765471a6
commit a8eceea84a
26 changed files with 41 additions and 43 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
net/ipv4/af_inet.c
View File

@ -872,7 +872,7 @@ int inet_shutdown(struct socket *sock, int how)
err = -ENOTCONN;
/* Hack to wake up other listeners, who can poll for
EPOLLHUP, even on eg. unconnected UDP sockets -- RR */
/* fall through */
fallthrough;
default:
sk->sk_shutdown |= how;
if (sk->sk_prot->shutdown)
@ -886,7 +886,7 @@ int inet_shutdown(struct socket *sock, int how)
case TCP_LISTEN:
if (!(how & RCV_SHUTDOWN))
break;
/* fall through */
fallthrough;
case TCP_SYN_SENT:
err = sk->sk_prot->disconnect(sk, O_NONBLOCK);
sock->state = err ? SS_DISCONNECTING : SS_UNCONNECTED;

2
net/ipv4/ah4.c
View File

@ -107,7 +107,7 @@ static int ip_clear_mutable_options(const struct iphdr *iph, __be32 *daddr)
if (optlen < 6)
return -EINVAL;
memcpy(daddr, optptr+optlen-4, 4);
/* Fall through */
fallthrough;
default:
memset(optptr, 0, optlen);
}

2
net/ipv4/arp.c
View File

@ -1181,7 +1181,7 @@ int arp_ioctl(struct net *net, unsigned int cmd, void __user *arg)
case SIOCSARP:
if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
return -EPERM;
/* fall through */
fallthrough;
case SIOCGARP:
err = copy_from_user(&r, arg, sizeof(struct arpreq));
if (err)

6
net/ipv4/devinet.c
View File

@ -1566,11 +1566,11 @@ static int inetdev_event(struct notifier_block *this, unsigned long event,
}
}
ip_mc_up(in_dev);
/* fall through */
fallthrough;
case NETDEV_CHANGEADDR:
if (!IN_DEV_ARP_NOTIFY(in_dev))
break;
/* fall through */
fallthrough;
case NETDEV_NOTIFY_PEERS:
/* Send gratuitous ARP to notify of link change */
inetdev_send_gratuitous_arp(dev, in_dev);
@ -1588,7 +1588,7 @@ static int inetdev_event(struct notifier_block *this, unsigned long event,
if (inetdev_valid_mtu(dev->mtu))
break;
/* disable IP when MTU is not enough */
/* fall through */
fallthrough;
case NETDEV_UNREGISTER:
inetdev_destroy(in_dev);
break;

4
net/ipv4/fib_semantics.c
View File

@ -1962,7 +1962,7 @@ int fib_sync_down_dev(struct net_device *dev, unsigned long event, bool force)
case NETDEV_DOWN:
case NETDEV_UNREGISTER:
nexthop_nh->fib_nh_flags |= RTNH_F_DEAD;
/* fall through */
fallthrough;
case NETDEV_CHANGE:
nexthop_nh->fib_nh_flags |= RTNH_F_LINKDOWN;
break;
@ -1984,7 +1984,7 @@ int fib_sync_down_dev(struct net_device *dev, unsigned long event, bool force)
case NETDEV_DOWN:
case NETDEV_UNREGISTER:
fi->fib_flags |= RTNH_F_DEAD;
/* fall through */
fallthrough;
case NETDEV_CHANGE:
fi->fib_flags |= RTNH_F_LINKDOWN;
break;

2
net/ipv4/icmp.c
View File

@ -865,7 +865,7 @@ static bool icmp_unreach(struct sk_buff *skb)
case 3:
if (!icmp_tag_validation(iph->protocol))
goto out;
/* fall through */
fallthrough;
case 0:
info = ntohs(icmph->un.frag.mtu);
}

2
net/ipv4/ip_output.c
View File

@ -333,7 +333,7 @@ static int ip_mc_finish_output(struct net *net, struct sock *sk,
switch (ret) {
case NET_XMIT_CN:
do_cn = true;
/* fall through */
fallthrough;
case NET_XMIT_SUCCESS:
break;
default:

2
net/ipv4/ipmr.c
View File

@ -1465,7 +1465,7 @@ int ip_mroute_setsockopt(struct sock *sk, int optname, char __user *optval,
case MRT_ADD_MFC:
case MRT_DEL_MFC:
parent = -1;
/* fall through */
fallthrough;
case MRT_ADD_MFC_PROXY:
case MRT_DEL_MFC_PROXY:
if (optlen != sizeof(mfc)) {

2
net/ipv4/netfilter/nf_log_ipv4.c
View File

@ -173,7 +173,7 @@ static void dump_ipv4_packet(struct net *net, struct nf_log_buf *m,
case ICMP_REDIRECT:
/* Max length: 24 "GATEWAY=255.255.255.255 " */
nf_log_buf_add(m, "GATEWAY=%pI4 ", &ich->un.gateway);
/* Fall through */
fallthrough;
case ICMP_DEST_UNREACH:
case ICMP_SOURCE_QUENCH:
case ICMP_TIME_EXCEEDED:

4
net/ipv4/netfilter/nf_nat_pptp.c
View File

@ -168,7 +168,7 @@ pptp_outbound_pkt(struct sk_buff *skb,
pr_debug("unknown outbound packet 0x%04x:%s\n", msg,
msg <= PPTP_MSG_MAX ? pptp_msg_name[msg] :
pptp_msg_name[0]);
/* fall through */
fallthrough;
case PPTP_SET_LINK_INFO:
/* only need to NAT in case PAC is behind NAT box */
case PPTP_START_SESSION_REQUEST:
@ -271,7 +271,7 @@ pptp_inbound_pkt(struct sk_buff *skb,
pr_debug("unknown inbound packet %s\n",
msg <= PPTP_MSG_MAX ? pptp_msg_name[msg] :
pptp_msg_name[0]);
/* fall through */
fallthrough;
case PPTP_START_SESSION_REQUEST:
case PPTP_START_SESSION_REPLY:
case PPTP_STOP_SESSION_REQUEST:

2
net/ipv4/nexthop.c
View File

@ -1327,7 +1327,7 @@ static int rtm_to_nh_config(struct net *net, struct sk_buff *skb,
case AF_UNSPEC:
if (tb[NHA_GROUP])
break;
/* fallthrough */
fallthrough;
default:
NL_SET_ERR_MSG(extack, "Invalid address family");
goto out;

2
net/ipv4/tcp.c
View File

@ -2251,7 +2251,7 @@ void tcp_set_state(struct sock *sk, int state)
if (inet_csk(sk)->icsk_bind_hash &&
!(sk->sk_userlocks & SOCK_BINDPORT_LOCK))
inet_put_port(sk);
/* fall through */
fallthrough;
default:
if (oldstate == TCP_ESTABLISHED)
TCP_DEC_STATS(sock_net(sk), TCP_MIB_CURRESTAB);

6
net/ipv4/tcp_input.c
View File

@ -2865,7 +2865,7 @@ static void tcp_fastretrans_alert(struct sock *sk, const u32 prior_snd_una,
(*ack_flag & FLAG_LOST_RETRANS)))
return;
/* Change state if cwnd is undone or retransmits are lost */
/* fall through */
fallthrough;
default:
if (tcp_is_reno(tp)) {
if (flag & FLAG_SND_UNA_ADVANCED)
@ -6367,7 +6367,7 @@ int tcp_rcv_state_process(struct sock *sk, struct sk_buff *skb)
mptcp_incoming_options(sk, skb, &tp->rx_opt);
break;
}
/* fall through */
fallthrough;
case TCP_FIN_WAIT1:
case TCP_FIN_WAIT2:
/* RFC 793 says to queue data in these states,
@ -6382,7 +6382,7 @@ int tcp_rcv_state_process(struct sock *sk, struct sk_buff *skb)
return 1;
}
}
/* Fall through */
fallthrough;
case TCP_ESTABLISHED:
tcp_data_queue(sk, skb);
queued = 1;

4
net/ipv4/tcp_ipv4.c
View File

@ -2072,7 +2072,7 @@ do_time_wait:
}
}
/* to ACK */
/* fall through */
fallthrough;
case TCP_TW_ACK:
tcp_v4_timewait_ack(sk, skb);
break;
@ -2368,7 +2368,7 @@ static void *tcp_seek_last_pos(struct seq_file *seq)
break;
st->bucket = 0;
st->state = TCP_SEQ_STATE_ESTABLISHED;
/* Fallthrough */
fallthrough;
case TCP_SEQ_STATE_ESTABLISHED:
if (st->bucket > tcp_hashinfo.ehash_mask)
break;

2
net/ipv4/udp.c
View File

@ -2563,7 +2563,7 @@ int udp_lib_setsockopt(struct sock *sk, int level, int optname,
case UDP_ENCAP_ESPINUDP_NON_IKE:
up->encap_rcv = xfrm4_udp_encap_rcv;
#endif
/* FALLTHROUGH */
fallthrough;
case UDP_ENCAP_L2TPINUDP:
up->encap_type = val;
lock_sock(sk);

6
net/ipv6/addrconf.c
View File

@ -3299,7 +3299,7 @@ static void addrconf_addr_gen(struct inet6_dev *idev, bool prefix_route)
switch (idev->cnf.addr_gen_mode) {
case IN6_ADDR_GEN_MODE_RANDOM:
ipv6_gen_mode_random_init(idev);
/* fallthrough */
fallthrough;
case IN6_ADDR_GEN_MODE_STABLE_PRIVACY:
if (!ipv6_generate_stable_address(&addr, 0, idev))
addrconf_add_linklocal(idev, &addr,
@ -3517,9 +3517,7 @@ static int addrconf_notify(struct notifier_block *this, unsigned long event,
break;
run_pending = 1;
/* fall through */
fallthrough;
case NETDEV_UP:
case NETDEV_CHANGE:
if (dev->flags & IFF_SLAVE)

2
net/ipv6/ah6.c
View File

@ -259,7 +259,7 @@ static int ipv6_clear_mutable_options(struct ipv6hdr *iph, int len, int dir)
case NEXTHDR_DEST:
if (dir == XFRM_POLICY_OUT)
ipv6_rearrange_destopt(iph, exthdr.opth);
/* fall through */
fallthrough;
case NEXTHDR_HOP:
if (!zero_out_mutable_opts(exthdr.opth)) {
net_dbg_ratelimited("overrun %sopts\n",

2
net/ipv6/exthdrs.c
View File

@ -97,7 +97,7 @@ static bool ip6_tlvopt_unknown(struct sk_buff *skb, int optoff,
*/
if (ipv6_addr_is_multicast(&ipv6_hdr(skb)->daddr))
break;
/* fall through */
fallthrough;
case 2: /* send ICMP PARM PROB regardless and drop packet */
icmpv6_param_prob(skb, ICMPV6_UNK_OPTION, optoff);
return false;

2
net/ipv6/icmp.c
View File

@ -898,7 +898,7 @@ static int icmpv6_rcv(struct sk_buff *skb)
hdr = icmp6_hdr(skb);
/* to notify */
/* fall through */
fallthrough;
case ICMPV6_DEST_UNREACH:
case ICMPV6_TIME_EXCEED:
case ICMPV6_PARAMPROB:

8
net/ipv6/ip6_fib.c
View File

@ -2068,8 +2068,8 @@ static int fib6_walk_continue(struct fib6_walker *w)
continue;
}
w->state = FWS_L;
fallthrough;
#endif
/* fall through */
case FWS_L:
left = rcu_dereference_protected(fn->left, 1);
if (left) {
@ -2078,7 +2078,7 @@ static int fib6_walk_continue(struct fib6_walker *w)
continue;
}
w->state = FWS_R;
/* fall through */
fallthrough;
case FWS_R:
right = rcu_dereference_protected(fn->right, 1);
if (right) {
@ -2088,7 +2088,7 @@ static int fib6_walk_continue(struct fib6_walker *w)
}
w->state = FWS_C;
w->leaf = rcu_dereference_protected(fn->leaf, 1);
/* fall through */
fallthrough;
case FWS_C:
if (w->leaf && fn->fn_flags & RTN_RTINFO) {
int err;
@ -2107,7 +2107,7 @@ static int fib6_walk_continue(struct fib6_walker *w)
}
skip:
w->state = FWS_U;
/* fall through */
fallthrough;
case FWS_U:
if (fn == w->root)
return 0;

2
net/ipv6/ip6mr.c
View File

@ -1691,7 +1691,7 @@ int ip6_mroute_setsockopt(struct sock *sk, int optname, char __user *optval, uns
case MRT6_ADD_MFC:
case MRT6_DEL_MFC:
parent = -1;
/* fall through */
fallthrough;
case MRT6_ADD_MFC_PROXY:
case MRT6_DEL_MFC_PROXY:
if (optlen < sizeof(mfc))

2
net/ipv6/ndisc.c
View File

@ -1782,7 +1782,7 @@ static int ndisc_netdev_event(struct notifier_block *this, unsigned long event,
case NETDEV_CHANGEADDR:
neigh_changeaddr(&nd_tbl, dev);
fib6_run_gc(0, net, false);
/* fallthrough */
fallthrough;
case NETDEV_UP:
idev = in6_dev_get(dev);
if (!idev)

2
net/ipv6/netfilter/nf_log_ipv6.c
View File

@ -248,7 +248,7 @@ static void dump_ipv6_packet(struct net *net, struct nf_log_buf *m,
/* Max length: 17 "POINTER=ffffffff " */
nf_log_buf_add(m, "POINTER=%08x ",
ntohl(ic->icmp6_pointer));
/* Fall through */
fallthrough;
case ICMPV6_DEST_UNREACH:
case ICMPV6_PKT_TOOBIG:
case ICMPV6_TIME_EXCEED:

8
net/ipv6/raw.c
View File

@ -1076,7 +1076,7 @@ static int rawv6_setsockopt(struct sock *sk, int level, int optname,
if (optname == IPV6_CHECKSUM ||
optname == IPV6_HDRINCL)
break;
/* fall through */
fallthrough;
default:
return ipv6_setsockopt(sk, level, optname, optval, optlen);
}
@ -1099,7 +1099,7 @@ static int compat_rawv6_setsockopt(struct sock *sk, int level, int optname,
if (optname == IPV6_CHECKSUM ||
optname == IPV6_HDRINCL)
break;
/* fall through */
fallthrough;
default:
return compat_ipv6_setsockopt(sk, level, optname,
optval, optlen);
@ -1161,7 +1161,7 @@ static int rawv6_getsockopt(struct sock *sk, int level, int optname,
if (optname == IPV6_CHECKSUM ||
optname == IPV6_HDRINCL)
break;
/* fall through */
fallthrough;
default:
return ipv6_getsockopt(sk, level, optname, optval, optlen);
}
@ -1184,7 +1184,7 @@ static int compat_rawv6_getsockopt(struct sock *sk, int level, int optname,
if (optname == IPV6_CHECKSUM ||
optname == IPV6_HDRINCL)
break;
/* fall through */
fallthrough;
default:
return compat_ipv6_getsockopt(sk, level, optname,
optval, optlen);

2
net/ipv6/route.c
View File

@ -4370,7 +4370,7 @@ static int ip6_pkt_drop(struct sk_buff *skb, u8 code, int ipstats_mib_noroutes)
IP6_INC_STATS(net, idev, IPSTATS_MIB_INADDRERRORS);
break;
}
/* FALLTHROUGH */
fallthrough;
case IPSTATS_MIB_OUTNOROUTES:
IP6_INC_STATS(net, idev, ipstats_mib_noroutes);
break;

2
net/ipv6/tcp_ipv6.c
View File

@ -1742,7 +1742,7 @@ do_time_wait:
}
}
/* to ACK */
/* fall through */
fallthrough;
case TCP_TW_ACK:
tcp_v6_timewait_ack(sk, skb);
break;