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authorGene Snider <eugene.snider@huawei.com>2015-09-01 16:56:21 -0700
committerMaryam Tahhan <maryam.tahhan@intel.com>2015-09-09 08:08:36 +0000
commit72a6363bacadab1a0565ce71144471ba6f6d64ae (patch)
treed33466668c56ad4b28575dab2f826de9edeacf05 /docs/etc
parent7278d39b3f86595539ee213e2e2b2b14e72f3ff8 (diff)
Add DNAT/SNAT support
JIRA: VSPERF-72 This change adds optional IPv4 DNAT support to l2fwd module for level two forwarding. With this change the l2fwd module can be used for testing complex IP configuration routing with virtual switches. Other L2 forwarding modules provide only Level 2 pass through. These can be used for complex IP chain processing but rely on port forwarding in the switch. With this module each packet which is forwarded optionally gets a new destination IP and source masquerade. So a test packet can be routed to eth1 and forwarded on eth2 with a different target IP and source address. To use this module compile it for your kernel and use the 'insmod' command to insert it. With no arguments this will forward eth1 to eth2 without modification. With 'net1=ethX net2=ethX' Level 2 forwarding can be done between arbitrary ports. With 'netX=ethX,XX.XX.XX.XX,xx:xx:xx:xx:xx:xx' the packets which are forwarded on the target port will be given the new destination IP and mac address. One or both ports may enable DNAT. Change-Id: If24281a6841930a7a85e4536da96b980ed48df1b Signed-off-by: Gene Snider <eugene.snider@huawei.com> Reviewed-by: Billy O Mahony <billy.o.mahony@intel.com>
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