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charset=\"us-ascii\"","Content-Transfer-Encoding":"7bit","Errors-To":"ovs-dev-bounces@openvswitch.org","Sender":"\"dev\" "},"content":"clone_xlate_actions() has two code paths. The non-reversible path\nsaves and restores ctx->conntracked across the inner actions, but\nthe reversible path does not.\n\nThis is a problem for flows like:\n clone(ct_clear, ), ct_clear, resubmit(,N)\n\nThe ct_clear inside the clone sets ctx->conntracked to false. After\nthe clone returns, the flag stays false but flow.ct_state is\nrestored by xretain_state_restore_and_free(). The ct_clear that\nfollows the clone then does nothing, because OFPACT_CT_CLEAR runs\nonly when ctx->conntracked is true. The original packet keeps its\nold ct_state, and the ct_clear did not take effect.\n\nMove OFPACT_CT_CLEAR to the non-reversible list so clone(ct_clear,\n) goes through the path that wraps the inner actions in a\ndatapath clone and properly isolates ctx->conntracked from the\nouter context.\n\nTest added in tests/ofproto-dpif.at.\n\nFixes: 1fe178d251c8 (\"dpif: Add support for OVS_ACTION_ATTR_CT_CLEAR\")\nReported-by: Ashwin Balaji S \nSigned-off-by: Naveen Yerramneni \n---\nv2:\n - Addressed review comments from Ilya Maximets.\n---\n ofproto/ofproto-dpif-xlate.c | 2 +-\n tests/ofproto-dpif.at | 24 ++++++++++++++++++++++++\n 2 files changed, 25 insertions(+), 1 deletion(-)","diff":"diff --git a/ofproto/ofproto-dpif-xlate.c b/ofproto/ofproto-dpif-xlate.c\nindex 0b38dcf55..c1ba447e9 100644\n--- a/ofproto/ofproto-dpif-xlate.c\n+++ b/ofproto/ofproto-dpif-xlate.c\n@@ -6126,7 +6126,6 @@ reversible_actions(const struct ofpact *ofpacts, size_t ofpacts_len)\n case OFPACT_CLONE:\n case OFPACT_CONJUNCTION:\n case OFPACT_CONTROLLER:\n- case OFPACT_CT_CLEAR:\n case OFPACT_DEBUG_RECIRC:\n case OFPACT_DEBUG_SLOW:\n case OFPACT_DEC_MPLS_TTL:\n@@ -6176,6 +6175,7 @@ reversible_actions(const struct ofpact *ofpacts, size_t ofpacts_len)\n break;\n \n case OFPACT_CT:\n+ case OFPACT_CT_CLEAR:\n case OFPACT_METER:\n case OFPACT_NAT:\n case OFPACT_OUTPUT_TRUNC:\ndiff --git a/tests/ofproto-dpif.at b/tests/ofproto-dpif.at\nindex 39e43d376..dcb9e91e0 100644\n--- a/tests/ofproto-dpif.at\n+++ b/tests/ofproto-dpif.at\n@@ -9298,6 +9298,30 @@ Datapath actions: set(ipv4(dst=192.168.4.4)),2,set(ipv4(dst=10.10.10.1)),4\n ])\n AT_CHECK([grep \"Failed to compose clone action\" stdout], [0], [ignore])\n \n+dnl ct_clear inside clone() is irreversible. A datapath clone action\n+dnl should be generated and any ct_clear after the clone must still be\n+dnl emitted.\n+\n+dnl Restore the datapath support level.\n+AT_CHECK([ovs-appctl dpif/set-dp-features br0 clone true], [0], [])\n+AT_CHECK([ovs-appctl dpif/set-dp-features br0 sample_nesting 10], [0], [])\n+\n+dnl Recirculate after ct() so the conntracked flag is set when the\n+dnl clone is processed.\n+AT_DATA([flows.txt], [dnl\n+table=0,in_port=1,ip,actions=ct(table=1)\n+table=1,in_port=1,actions=clone(ct_clear,output:2),ct_clear,output:3\n+])\n+AT_CHECK([ovs-ofctl del-flows br0])\n+AT_CHECK([ovs-ofctl add-flows br0 flows.txt], [0], [ignore])\n+\n+AT_CHECK([ovs-appctl ofproto/trace ovs-dummy 'in_port(1),eth(src=50:54:00:00:00:09,dst=50:54:00:00:00:0a),eth_type(0x0800),ipv4(src=10.10.10.2,dst=10.10.10.1,proto=1,tos=0,ttl=64,frag=no),icmp(type=8,code=0)'], [0], [stdout])\n+\n+AT_CHECK([grep Datapath stdout | sed 's/recirc(.*)/recirc(X)/'], [0],\n+ [Datapath actions: ct,recirc(X)\n+Datapath actions: clone(ct_clear,2),ct_clear,3\n+])\n+\n OVS_VSWITCHD_STOP\n AT_CLEANUP\n \n","prefixes":["ovs-dev","v2"]}