On Mon, Oct 05, 2020 at 07:39:45PM -0700, Stephen Hemminger wrote: > On Tue, 06 Oct 2020 00:55:19 +0200 > Thomas Monjalon <tho...@monjalon.net> wrote: > > > > On 9/1/20 12:47 PM, Michael Pfeiffer wrote: > > > Currently, rte_ipv4_cksum() and rte_ipv4_udptcp_cksum() assume all IPv4 > > > headers have sizeof(struct rte_ipv4_hdr) bytes. This is not true for > > > those (rare) packets with IPv4 options. Thus, both IPv4 and TCP/UDP > > > checksums are calculated wrong. > > > > > > This patch fixes the issue by using the actual IPv4 header length from > > > the packet's IHL field. > > > > > > Signed-off-by: Michael Pfeiffer <michael.pfeif...@tu-ilmenau.de>
Acked-by: Olivier Matz <olivier.m...@6wind.com> > > > - cksum = rte_raw_cksum(ipv4_hdr, sizeof(struct rte_ipv4_hdr)); > > > + cksum = rte_raw_cksum(ipv4_hdr, (ipv4_hdr->version_ihl & 0xf) * > > > 4); > > > > Truly naive questions: > > - doesn't it deserve a static inline function rte_ipv4_hdr_len()? > > Makes sense to have that. +1 However it could be in another patch: there are ~15 places where it could be replaced in dpdk.
