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4 Commits

Author SHA1 Message Date
Jamal Hadi Salim
43726b750a tc: don't ignore ok as an action branch 
This is what used to happen before:

tc filter add dev tap1 parent ffff: protocol 0xfefe prio 10 \
     u32 match u32 0 0 flowid 1:16 \
     action ife decode allow mark ok

tc -s filter ls dev tap1 parent ffff:
filter protocol [65278] pref 10 u32
filter protocol [65278] pref 10 u32 fh 800: ht divisor 1
filter protocol [65278] pref 10 u32 fh 800::800 order 2048 key ht 800
bkt 0 flowid 1:16
  match 00000000/00000000 at 0
        action order 1: ife decode action pipe
         index 2 ref 1 bind 1 installed 4 sec used 4 sec
         type: 0x0
         Metadata: allow mark
        Action statistics:
        Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
        backlog 0b 0p requeues 0

        action order 2: gact action pass
         random type none pass val 0
         index 1 ref 1 bind 1 installed 4 sec used 4 sec
        Action statistics:
        Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
        backlog 0b 0p requeues 0

Note the extra action added at the end..

Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com>
 2016-05-16 11:13:58 -07:00
Stephen Hemminger
32a121cba2 tc: code cleanup 
Use checkpatch to fix whitespace and other style issues.
 2016-03-21 11:48:36 -07:00
Anton Danilov
90d98edf39 csum action, fix typo 2012-03-15 14:24:59 -07:00
Gregoire Baron
3822cc986c tc: add ACT_CSUM action support (csum) 
Add the iproute2 support for the ACT_CSUM action. Can be used as
following, certainly in conjunction with the ACT_PEDIT action (pedit):

 # In order to DNAT (stateless) IPv4 packet from 192.168.1.100 to
 #  0x12345678 (18.52.86.120), and update the IPv4 header checksum and
 #  the UDP checksum (the last one, only if the packet is UDP).
tc filter add eth0 prio 1 protocol ip parent ffff: \
  u32 match ip src 192.168.1.100/32 flowid :1 \
    action pedit munge offset 16 u32 set 0x12345678 \
      pipe csum ip and udp

 # In order to alter destination address of IPv6 TCP packets from fc00::1
 #  and correct the TCP checksum (nothing happened? except maybe for
 #  checksums in the TCP payload ...).
tc filter add eth0 prio 1 protocol ipv6 parent ffff: \
  u32 match ip6 src fc00::1/128 match ip6 protocol 0x06 0xff flowid :1 \
    action pedit munge offset 24 u32 set 0x12345678 \
      pipe csum tcp
 2010-12-01 11:17:46 -08:00