]> www.infradead.org Git - users/jedix/linux-maple.git/commit
ipv4: Unmask upper DSCP bits when constructing the Record Route option
authorIdo Schimmel <idosch@nvidia.com>
Wed, 21 Aug 2024 12:52:42 +0000 (15:52 +0300)
committerJakub Kicinski <kuba@kernel.org>
Thu, 22 Aug 2024 23:59:57 +0000 (16:59 -0700)
commitbe2e9089cb34dfc958d8383a755bde3681a817b2
treeda57f622eec0a4f868c37ed8f6a68ff6c69ac985
parentbc52a4eecefdd686065f8f68ba9e1c83d4ce6f14
ipv4: Unmask upper DSCP bits when constructing the Record Route option

The Record Route IP option records the addresses of the routers that
routed the packet. In the case of forwarded packets, the kernel performs
a route lookup via fib_lookup() and fills in the preferred source
address of the matched route.

Unmask the upper DSCP bits when performing the lookup so that in the
future the lookup could be performed according to the full DSCP value.

No functional changes intended since the upper DSCP bits are masked when
comparing against the TOS selectors in FIB rules and routes.

Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Guillaume Nault <gnault@redhat.com>
Acked-by: Florian Westphal <fw@strlen.de>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://patch.msgid.link/20240821125251.1571445-4-idosch@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
net/ipv4/route.c