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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/ipv4/xfrm4_protocol.c | |
| parent | ce7336610ca950cda131293def57a0178d860121 (diff) | |
| download | linux-32bbd8793f24b0d5beb1cdb33c45c75ad1140e4b.tar.gz linux-32bbd8793f24b0d5beb1cdb33c45c75ad1140e4b.tar.bz2 linux-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/ipv4/xfrm4_protocol.c')
| -rw-r--r-- | net/ipv4/xfrm4_protocol.c | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/net/ipv4/xfrm4_protocol.c b/net/ipv4/xfrm4_protocol.c index 8dd0e6ab8606..35c54865dc42 100644 --- a/net/ipv4/xfrm4_protocol.c +++ b/net/ipv4/xfrm4_protocol.c @@ -106,13 +106,15 @@ static int xfrm4_esp_rcv(struct sk_buff *skb) return 0; } -static void xfrm4_esp_err(struct sk_buff *skb, u32 info) +static int xfrm4_esp_err(struct sk_buff *skb, u32 info) { struct xfrm4_protocol *handler; for_each_protocol_rcu(esp4_handlers, handler) if (!handler->err_handler(skb, info)) - break; + return 0; + + return -ENOENT; } static int xfrm4_ah_rcv(struct sk_buff *skb) @@ -132,13 +134,15 @@ static int xfrm4_ah_rcv(struct sk_buff *skb) return 0; } -static void xfrm4_ah_err(struct sk_buff *skb, u32 info) +static int xfrm4_ah_err(struct sk_buff *skb, u32 info) { struct xfrm4_protocol *handler; for_each_protocol_rcu(ah4_handlers, handler) if (!handler->err_handler(skb, info)) - break; + return 0; + + return -ENOENT; } static int xfrm4_ipcomp_rcv(struct sk_buff *skb) @@ -158,13 +162,15 @@ static int xfrm4_ipcomp_rcv(struct sk_buff *skb) return 0; } -static void xfrm4_ipcomp_err(struct sk_buff *skb, u32 info) +static int xfrm4_ipcomp_err(struct sk_buff *skb, u32 info) { struct xfrm4_protocol *handler; for_each_protocol_rcu(ipcomp4_handlers, handler) if (!handler->err_handler(skb, info)) - break; + return 0; + + return -ENOENT; } static const struct net_protocol esp4_protocol = { |