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| 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/ipv6/xfrm6_protocol.c | |
| parent | selftests: pmtu: Introduce tests for IPv4/IPv6 over GENEVE over IPv4/IPv6 (diff) | |
| download | linux-dev-32bbd8793f24b0d5beb1cdb33c45c75ad1140e4b.tar.xz linux-dev-32bbd8793f24b0d5beb1cdb33c45c75ad1140e4b.zip | |
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/ipv6/xfrm6_protocol.c')
| -rw-r--r-- | net/ipv6/xfrm6_protocol.c | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/net/ipv6/xfrm6_protocol.c b/net/ipv6/xfrm6_protocol.c index b2dc8ce49378..cc979b702c89 100644 --- a/net/ipv6/xfrm6_protocol.c +++ b/net/ipv6/xfrm6_protocol.c @@ -80,14 +80,16 @@ static int xfrm6_esp_rcv(struct sk_buff *skb) return 0; } -static void xfrm6_esp_err(struct sk_buff *skb, struct inet6_skb_parm *opt, +static int xfrm6_esp_err(struct sk_buff *skb, struct inet6_skb_parm *opt, u8 type, u8 code, int offset, __be32 info) { struct xfrm6_protocol *handler; for_each_protocol_rcu(esp6_handlers, handler) if (!handler->err_handler(skb, opt, type, code, offset, info)) - break; + return 0; + + return -ENOENT; } static int xfrm6_ah_rcv(struct sk_buff *skb) @@ -107,14 +109,16 @@ static int xfrm6_ah_rcv(struct sk_buff *skb) return 0; } -static void xfrm6_ah_err(struct sk_buff *skb, struct inet6_skb_parm *opt, +static int xfrm6_ah_err(struct sk_buff *skb, struct inet6_skb_parm *opt, u8 type, u8 code, int offset, __be32 info) { struct xfrm6_protocol *handler; for_each_protocol_rcu(ah6_handlers, handler) if (!handler->err_handler(skb, opt, type, code, offset, info)) - break; + return 0; + + return -ENOENT; } static int xfrm6_ipcomp_rcv(struct sk_buff *skb) @@ -134,14 +138,16 @@ static int xfrm6_ipcomp_rcv(struct sk_buff *skb) return 0; } -static void xfrm6_ipcomp_err(struct sk_buff *skb, struct inet6_skb_parm *opt, +static int xfrm6_ipcomp_err(struct sk_buff *skb, struct inet6_skb_parm *opt, u8 type, u8 code, int offset, __be32 info) { struct xfrm6_protocol *handler; for_each_protocol_rcu(ipcomp6_handlers, handler) if (!handler->err_handler(skb, opt, type, code, offset, info)) - break; + return 0; + + return -ENOENT; } static const struct inet6_protocol esp6_protocol = { |