From: Hongzhi Guo
RFC 768 for UDP specifies:
If the computed checksum is zero, it is transmitted as all ones.
An all zero transmitted checksum value means that the transmitter
generated no checksum.
RFC 793 for TCP has no such special treatment for the checksum of zero.
Signed-off-by: Hon
RFC 768 for UDP specifies:
If the computed checksum is zero, it is transmitted as all ones.
An all zero transmitted checksum value means that the transmitter
generated no checksum.
RFC 793 for TCP has no such special treatment for the checksum of zero.
Signed-off-by: guohongzhi
---
lib
From: Hongzhi Guo
__rte_raw_cksum should consider Big Endian.
Signed-off-by: Hongzhi Guo
---
lib/librte_net/rte_ip.h | 4
1 file changed, 4 insertions(+)
diff --git a/lib/librte_net/rte_ip.h b/lib/librte_net/rte_ip.h
index 1ceb7b7..eb863d4 100644
--- a/lib/librte_net/rte_ip.h
+++ b/lib/l
From: Hongzhi Guo
0x is invalid for IPv4 checksum(RFC1624)
Fixes: 6006818cfb26 ("net: new checksum functions")
Cc: sta...@dpdk.org
Reviewed-By: Morten Brørup
Acked-by: Olivier Matz
Signed-off-by: Hongzhi Guo
---
lib/librte_net/rte_ip.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion
0x is invalid for IPv4 checksum(RFC1624)
Fixes: 6006818cfb26 ("net: new checksum functions")
Reviewed-By: Morten Brørup
Acked-by: Olivier Matz
Signed-off-by: guohongzhi
---
lib/librte_net/rte_ip.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/lib/
1.rte_ipv4_cksum will return invalid checksum value like 0x.(rfc1624)
2.__rte_raw_cksum should consider Big Endian.
3.checksum 0x is invalid for udp, but valid for tcp.(rfc768)
Signed-off-by: guohongzhi
---
lib/librte_net/rte_ip.h | 15 ++-
1 file changed, 10 insertions
Ok, later I will write a patch to solve the problem of tcpdump checksum
-Original Message-
From: Morten Brørup [mailto:m...@smartsharesystems.com]
Sent: Thursday,May 14,2020 20:57
To: guohongzhi (A) ; dev@dpdk.org
Cc: olivier.m...@6wind.com; konstantin.anan...@intel.com; jiayu
The function of rte_ipv4_cksum for calculating the
checksum of IPv4 header is incorrect.
This function will return checksum value like 0x.
This value, however, is considered an illegal checksum on some switches(like
Trident3).
RFC 1624 specifies the IPv4 checksum as follows:
https://tools.iet
The function of rte_ipv4_cksum for calculating the checksum of IPv4 header is
incorrect. This function will return checksum value like 0x. This value,
however, is considered an illegal checksum on some switches(like Trident3).
RFC 1624 specifies the IPv4 checksum as follows:
https://tools.iet
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