diff options
| author | Matteo Croce <mcroce@redhat.com> | 2019-11-02 03:12:04 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-11-06 01:03:11 +0300 |
| commit | 54074f1dbd6fbc0f0a085a54f3297ae26e424d59 (patch) | |
| tree | 92febdbde61f84d4ff24efe5db7520126522be56 /net/ipv4 | |
| parent | 15122464d525f684a61806d28597050cdcef0f32 (diff) | |
| download | linux-54074f1dbd6fbc0f0a085a54f3297ae26e424d59.tar.xz | |
icmp: remove duplicate code
The same code which recognizes ICMP error packets is duplicated several
times. Use the icmp_is_err() and icmpv6_is_err() helpers instead, which
do the same thing.
ip_multipath_l3_keys() and tcf_nat_act() didn't check for all the error types,
assume that they should instead.
Signed-off-by: Matteo Croce <mcroce@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4')
| -rw-r--r-- | net/ipv4/netfilter/nf_socket_ipv4.c | 10 | ||||
| -rw-r--r-- | net/ipv4/route.c | 5 |
2 files changed, 2 insertions, 13 deletions
diff --git a/net/ipv4/netfilter/nf_socket_ipv4.c b/net/ipv4/netfilter/nf_socket_ipv4.c index 36a28d46149c..c94445b44d8c 100644 --- a/net/ipv4/netfilter/nf_socket_ipv4.c +++ b/net/ipv4/netfilter/nf_socket_ipv4.c @@ -31,16 +31,8 @@ extract_icmp4_fields(const struct sk_buff *skb, u8 *protocol, if (icmph == NULL) return 1; - switch (icmph->type) { - case ICMP_DEST_UNREACH: - case ICMP_SOURCE_QUENCH: - case ICMP_REDIRECT: - case ICMP_TIME_EXCEEDED: - case ICMP_PARAMETERPROB: - break; - default: + if (!icmp_is_err(icmph->type)) return 1; - } inside_iph = skb_header_pointer(skb, outside_hdrlen + sizeof(struct icmphdr), diff --git a/net/ipv4/route.c b/net/ipv4/route.c index 621f83434b24..dcc4fa10138d 100644 --- a/net/ipv4/route.c +++ b/net/ipv4/route.c @@ -1894,10 +1894,7 @@ static void ip_multipath_l3_keys(const struct sk_buff *skb, if (!icmph) goto out; - if (icmph->type != ICMP_DEST_UNREACH && - icmph->type != ICMP_REDIRECT && - icmph->type != ICMP_TIME_EXCEEDED && - icmph->type != ICMP_PARAMETERPROB) + if (!icmp_is_err(icmph->type)) goto out; inner_iph = skb_header_pointer(skb, |