diff options
| author | Stefano Brivio <sbrivio@redhat.com> | 2018-11-08 12:19:21 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-11-08 17:13:08 -0800 |
| commit | 32bbd8793f24b0d5beb1cdb33c45c75ad1140e4b (patch) | |
| tree | 69b7c7f0348e063bd81215058130c1b1800410db /net/dccp/ipv6.c | |
| parent | ce7336610ca950cda131293def57a0178d860121 (diff) | |
net: Convert protocol error handlers from void to int
We'll need this to handle ICMP errors for tunnels without a sending socket
(i.e. FoU and GUE). There, we might have to look up different types of IP
tunnels, registered as network protocols, before we get a match, so we
want this for the error handlers of IPPROTO_IPIP and IPPROTO_IPV6 in both
inet_protos and inet6_protos. These error codes will be used in the next
patch.
For consistency, return sensible error codes in protocol error handlers
whenever handlers can't handle errors because, even if valid, they don't
match a protocol or any of its states.
This has no effect on existing error handling paths.
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Reviewed-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/dccp/ipv6.c')
| -rw-r--r-- | net/dccp/ipv6.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/net/dccp/ipv6.c b/net/dccp/ipv6.c index 6344f1b18a6a..d5740bad5b18 100644 --- a/net/dccp/ipv6.c +++ b/net/dccp/ipv6.c @@ -68,7 +68,7 @@ static inline __u64 dccp_v6_init_sequence(struct sk_buff *skb) } -static void dccp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt, +static int dccp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt, u8 type, u8 code, int offset, __be32 info) { const struct ipv6hdr *hdr = (const struct ipv6hdr *)skb->data; @@ -96,16 +96,18 @@ static void dccp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt, if (!sk) { __ICMP6_INC_STATS(net, __in6_dev_get(skb->dev), ICMP6_MIB_INERRORS); - return; + return -ENOENT; } if (sk->sk_state == DCCP_TIME_WAIT) { inet_twsk_put(inet_twsk(sk)); - return; + return 0; } seq = dccp_hdr_seq(dh); - if (sk->sk_state == DCCP_NEW_SYN_RECV) - return dccp_req_err(sk, seq); + if (sk->sk_state == DCCP_NEW_SYN_RECV) { + dccp_req_err(sk, seq); + return 0; + } bh_lock_sock(sk); if (sock_owned_by_user(sk)) @@ -183,6 +185,7 @@ static void dccp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt, out: bh_unlock_sock(sk); sock_put(sk); + return 0; } |