diff options
author | Pablo Neira Ayuso <pablo@netfilter.org> | 2019-09-30 16:25:42 +0200 |
---|---|---|
committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2019-09-30 16:26:29 +0200 |
commit | 38a7e5b365edce1fc0a972a05bbda0673ca63cad (patch) | |
tree | bd7568505a14739910dc8c09faaeffde2bac869b /src/internal.h | |
parent | 601abd1c71ccdf90753cf294c120ad43fb25dc54 (diff) |
checksum: Fix UDP checksum calculation
The level 4 protocol is part of the UDP and TCP calculations.
nfq_checksum_tcpudp_ipv4() was using IPPROTO_TCP in this calculation,
which gave the wrong answer for UDP.
Based on patch from Alin Nastac, and patch description from Duncan Roe.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'src/internal.h')
-rw-r--r-- | src/internal.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/src/internal.h b/src/internal.h index 558d267..d648bfe 100644 --- a/src/internal.h +++ b/src/internal.h @@ -15,8 +15,9 @@ struct iphdr; struct ip6_hdr; uint16_t nfq_checksum(uint32_t sum, uint16_t *buf, int size); -uint16_t nfq_checksum_tcpudp_ipv4(struct iphdr *iph); -uint16_t nfq_checksum_tcpudp_ipv6(struct ip6_hdr *ip6h, void *transport_hdr); +uint16_t nfq_checksum_tcpudp_ipv4(struct iphdr *iph, uint16_t protonum); +uint16_t nfq_checksum_tcpudp_ipv6(struct ip6_hdr *ip6h, void *transport_hdr, + uint16_t protonum); struct pkt_buff { uint8_t *mac_header; |