Il 27/02/2015 00:52, Pravin Shelar ha scritto:
On Thu, Feb 26, 2015 at 5:17 AM, Stefano Salsano wrote:
there is a limit of 3 MPLS labels that are supported by Open vSwitch
we need to raise it at 5 labels, to implement a segment routing scenario
You can start with changing FLOW_MAX_MPLS_LABELS to 5.
Dear Pravin,
thanks for your hint, we have tried and we realized that we also need to
change an assert in lib/flow.h
current code is
BUILD_ASSERT_DECL(offsetof(struct flow, igmp_group_ip4) +
sizeof(uint32_t) == sizeof(struct flow_tnl) + 192 && FLOW_WC_SEQ == 31);
we need to change it into:
BUILD_ASSERT_DECL(offsetof(struct flow, igmp_group_ip4) +
sizeof(uint32_t) == sizeof(struct flow_tnl) + 176 + (4 *
ROUND_UP(FLOW_MAX_MPLS_LABELS, 2)) && FLOW_WC_SEQ == 31);
basically, we need to split the 192 bytes in a fixed part of 176 bytes
and in a part that depends on the number of supported MPLS labels
we tried it, and it compiles and runs well :-)
do you think it is OK ? do you want us to provide a patch ?
thank you
ciao
Stefano & Pier Luigi
any help or suggestion is welcome!
I am trying on ovs-discuss list... may be the ovs-dev list is more
appropriate for this type of questions?
thank you
ciao
Stefano
--
*******************************************************************
Stefano Salsano
Professore Associato
Dipartimento Ingegneria Elettronica
Universita' di Roma Tor Vergata
Via del Politecnico, 1 - 00133 Roma - ITALY
http://netgroup.uniroma2.it/Stefano_Salsano/
E-mail : stefano.sals...@uniroma2.it
Cell. : +39 320 4307310
Office : (Tel.) +39 06 72597770 (Fax.) +39 06 72597435
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*******************************************************************
Stefano Salsano
Professore Associato
Dipartimento Ingegneria Elettronica
Universita' di Roma Tor Vergata
Via del Politecnico, 1 - 00133 Roma - ITALY
http://netgroup.uniroma2.it/Stefano_Salsano/
E-mail : stefano.sals...@uniroma2.it
Cell. : +39 320 4307310
Office : (Tel.) +39 06 72597770 (Fax.) +39 06 72597435
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discuss mailing list
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http://openvswitch.org/mailman/listinfo/discuss
