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| author | Guillaume Nault <gnault@redhat.com> | 2023-02-08 18:13:59 +0100 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2023-02-09 22:49:04 -0800 |
| commit | e010ae08c71fda8be3d6bda256837795a0b3ea41 (patch) | |
| tree | 5db336347b8f3e92a9c331010d2712f5a80e5ad4 /net/ipv6/tcp_ipv6.c | |
| parent | 6e16e67a6b27f009ac70b1c59d8bd5a4e2820baf (diff) | |
| download | linux-e010ae08c71fda8be3d6bda256837795a0b3ea41.tar.gz linux-e010ae08c71fda8be3d6bda256837795a0b3ea41.tar.bz2 linux-e010ae08c71fda8be3d6bda256837795a0b3ea41.zip | |
ipv6: Fix datagram socket connection with DSCP.
Take into account the IPV6_TCLASS socket option (DSCP) in
ip6_datagram_flow_key_init(). Otherwise fib6_rule_match() can't
properly match the DSCP value, resulting in invalid route lookup.
For example:
ip route add unreachable table main 2001:db8::10/124
ip route add table 100 2001:db8::10/124 dev eth0
ip -6 rule add dsfield 0x04 table 100
echo test | socat - UDP6:[2001:db8::11]:54321,ipv6-tclass=0x04
Without this patch, socat fails at connect() time ("No route to host")
because the fib-rule doesn't jump to table 100 and the lookup ends up
being done in the main table.
Fixes: 2cc67cc731d9 ("[IPV6] ROUTE: Routing by Traffic Class.")
Signed-off-by: Guillaume Nault <gnault@redhat.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/ipv6/tcp_ipv6.c')
0 files changed, 0 insertions, 0 deletions