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gre: Prepare ipgre_open() to .flowi4_tos conversion.

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Use ip4h_dscp() to get the tunnel DSCP option as dscp_t, instead of
manually masking the raw tos field with INET_DSCP_MASK. This will ease
the conversion of fl4->flowi4_tos to dscp_t, which just becomes a
matter of dropping the inet_dscp_to_dsfield() call.

Signed-off-by: Guillaume Nault <gnault@redhat.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Link: https://patch.msgid.link/6c05a11afdc61530f1a4505147e0909ad51feb15.1736941806.git.gnault@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Guillaume Nault
2025-01-15 12:53:55 +01:00
committed by Jakub Kicinski
parent 2ee738e90e
commit 2c77bcb344
1 changed files with 1 additions and 1 deletions
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2
net/ipv4/ip_gre.c
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@@ -926,7 +926,7 @@ static int ipgre_open(struct net_device *dev)
if (ipv4_is_multicast(t->parms.iph.daddr)) {
struct flowi4 fl4 = {
.flowi4_oif = t->parms.link,
.flowi4_tos = t->parms.iph.tos & INET_DSCP_MASK,
.flowi4_tos = inet_dscp_to_dsfield(ip4h_dscp(&t->parms.iph)),
.flowi4_scope = RT_SCOPE_UNIVERSE,
.flowi4_proto = IPPROTO_GRE,
.saddr = t->parms.iph.saddr,