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authorLaurent Vivier <lvivier@redhat.com>2024-03-06 16:58:35 +1100
committerStefano Brivio <sbrivio@redhat.com>2024-03-06 08:03:44 +0100
commitfeb4900c25deabaf9b54760e40aea5e65499e987 (patch)
tree704ced9153852bb501f79b1590fbfe7d0b6a1d18 /checksum.h
parente82b4fe5fc8f62fd7e0045395ad7d4260be2f35d (diff)
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checksum: use csum_ip4_header() in udp.c and tcp.c
We can find the same function to compute the IPv4 header checksum in tcp.c, udp.c and tap.c Use the function defined for tap.c, csum_ip4_header(), but with the code used in tcp.c and udp.c as it doesn't need a fully initialiazed IPv4 header, only protocol, tot_len, saddr and daddr. Signed-off-by: Laurent Vivier <lvivier@redhat.com> Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Message-ID: <20240303135114.1023026-7-lvivier@redhat.com> [dwg: Fix weird cppcheck regression; it appears to be a problem in pre-existing code, but somehow this patch is exposing it] Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Diffstat (limited to 'checksum.h')
-rw-r--r--checksum.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/checksum.h b/checksum.h
index cb80ab3..996f456 100644
--- a/checksum.h
+++ b/checksum.h
@@ -13,7 +13,8 @@ struct icmp6hdr;
uint32_t sum_16b(const void *buf, size_t len);
uint16_t csum_fold(uint32_t sum);
uint16_t csum_unaligned(const void *buf, size_t len, uint32_t init);
-void csum_ip4_header(struct iphdr *ip4h);
+uint16_t csum_ip4_header(uint16_t tot_len, uint8_t protocol,
+ struct in_addr saddr, struct in_addr daddr);
void csum_udp4(struct udphdr *udp4hr,
struct in_addr saddr, struct in_addr daddr,
const void *payload, size_t len);