On 3 March 2017 at 10:51, Jarno Rajahalme <[email protected]> wrote: > > On Mar 2, 2017, at 6:41 PM, Joe Stringer <[email protected]> wrote: > > On 28 February 2017 at 17:17, Jarno Rajahalme <[email protected]> wrote: > > 'ct_state' currently only needs 8 bits, so we can make room for a new > CT field introduced in the next patch. > > Signed-off-by: Jarno Rajahalme <[email protected]> > --- > include/openvswitch/flow.h | 3 ++- > lib/flow.c | 3 ++- > lib/match.c | 8 ++++---- > lib/packets.h | 2 +- > ofproto/ofproto-dpif.c | 2 +- > tests/ovs-ofctl.at | 2 +- > 6 files changed, 11 insertions(+), 9 deletions(-) > > diff --git a/include/openvswitch/flow.h b/include/openvswitch/flow.h > index df80dfe..9169272 100644 > --- a/include/openvswitch/flow.h > +++ b/include/openvswitch/flow.h > @@ -91,7 +91,8 @@ struct flow { > * computation is opaque to the user space. > */ > union flow_in_port in_port; /* Input port.*/ > uint32_t recirc_id; /* Must be exact match. */ > - uint16_t ct_state; /* Connection tracking state. */ > + uint8_t ct_state; /* Connection tracking state. */ > + uint8_t pad0; > uint16_t ct_zone; /* Connection tracking zone. */ > uint32_t ct_mark; /* Connection mark.*/ > uint8_t pad1[4]; /* Pad to 64 bits. */ > diff --git a/lib/flow.c b/lib/flow.c > index fb7bfeb..0c95b75 100644 > --- a/lib/flow.c > +++ b/lib/flow.c > @@ -593,7 +593,8 @@ miniflow_extract(struct dp_packet *packet, struct > miniflow *dst) > miniflow_push_uint32(mf, in_port, odp_to_u32(md->in_port.odp_port)); > if (md->recirc_id || md->ct_state) { > miniflow_push_uint32(mf, recirc_id, md->recirc_id); > - miniflow_push_uint16(mf, ct_state, md->ct_state); > + miniflow_push_uint8(mf, ct_state, md->ct_state); > + miniflow_push_uint8(mf, pad0, 0); > miniflow_push_uint16(mf, ct_zone, md->ct_zone); > } > > diff --git a/lib/match.c b/lib/match.c > index 3fcaec5..882bf0c 100644 > --- a/lib/match.c > +++ b/lib/match.c > @@ -340,8 +340,8 @@ match_set_ct_state(struct match *match, uint32_t > ct_state) > void > match_set_ct_state_masked(struct match *match, uint32_t ct_state, uint32_t > mask) > { > - match->flow.ct_state = ct_state & mask & UINT16_MAX; > - match->wc.masks.ct_state = mask & UINT16_MAX; > + match->flow.ct_state = ct_state & mask & UINT8_MAX; > + match->wc.masks.ct_state = mask & UINT8_MAX; > } > > void > @@ -1111,7 +1111,7 @@ match_format(const struct match *match, struct ds *s, > int priority) > } > > if (wc->masks.ct_state) { > - if (wc->masks.ct_state == UINT16_MAX) { > + if (wc->masks.ct_state == UINT8_MAX) { > ds_put_format(s, "%sct_state=%s", colors.param, colors.end); > if (f->ct_state) { > format_flags(s, ct_state_to_string, f->ct_state, '|'); > @@ -1120,7 +1120,7 @@ match_format(const struct match *match, struct ds *s, > int priority) > } > } else { > format_flags_masked(s, "ct_state", ct_state_to_string, > - f->ct_state, wc->masks.ct_state, > UINT16_MAX); > + f->ct_state, wc->masks.ct_state, > UINT8_MAX); > } > ds_put_char(s, ','); > } > diff --git a/lib/packets.h b/lib/packets.h > index c4d3799..f7e1d82 100644 > --- a/lib/packets.h > +++ b/lib/packets.h > @@ -99,7 +99,7 @@ struct pkt_metadata { > action. */ > uint32_t skb_priority; /* Packet priority for QoS. */ > uint32_t pkt_mark; /* Packet mark. */ > - uint16_t ct_state; /* Connection state. */ > + uint8_t ct_state; /* Connection state. */ > uint16_t ct_zone; /* Connection zone. */ > uint32_t ct_mark; /* Connection mark. */ > ovs_u128 ct_label; /* Connection label. */ > diff --git a/ofproto/ofproto-dpif.c b/ofproto/ofproto-dpif.c > index 89c7b7f..e595f3b 100644 > --- a/ofproto/ofproto-dpif.c > +++ b/ofproto/ofproto-dpif.c > @@ -3994,7 +3994,7 @@ check_mask(struct ofproto_dpif *ofproto, const struct > miniflow *flow) > uint32_t ct_mark; > > support = &ofproto->backer->support.odp; > - ct_state = MINIFLOW_GET_U16(flow, ct_state); > + ct_state = MINIFLOW_GET_U8(flow, ct_state); > if (support->ct_state && support->ct_zone && support->ct_mark > && support->ct_label && support->ct_state_nat) { > return ct_state & CS_UNSUPPORTED_MASK ? OFPERR_OFPBMC_BAD_MASK : 0; > diff --git a/tests/ovs-ofctl.at b/tests/ovs-ofctl.at > index 7e26735..9c32788 100644 > --- a/tests/ovs-ofctl.at > +++ b/tests/ovs-ofctl.at > @@ -1215,7 +1215,7 @@ NXM_NX_REG0(a0e0d050) > dnl > dnl When re-serialising, bits 16-31 are wildcarded, because current OVS > userspace > dnl doesn't understand (or store) those bits. > -NXM_OF_ETH_TYPE(0800), NXM_NX_CT_STATE_W(00000020/0000ffff) > +NXM_OF_ETH_TYPE(0800), NXM_NX_CT_STATE_W(00000020/000000ff) > nx_pull_match() returned error OFPBMC_BAD_VALUE > NXM_OF_ETH_TYPE(0800), NXM_NX_CT_STATE_W(00000020/00000020) > NXM_OF_ETH_TYPE(0800), NXM_NX_CT_STATE_W(00000020/000000f0) > > > Looks like the comment immediately above these lines needs updating. > > > Right. > > Is this changing controller-facing ct_state field size? > > > No, but maybe you double-check, as you are more familiar with that piece?
Oh, perhaps I misinterpreted the change. Earlier in the test, we specified a fully matched NXM_NX_CT_STATE(00000020) which is then passed into parse-nx-match, which populates out the full mask. With this patch, the full mask has changed from 0xffff to 0xff, which I think it should have been in the first place --- but since the internal format of ct_state used to be 16 bits wide, we actually accepted wider masks if the value of bits 8-15 were 0. OVS userspace doesn't understand bits 8-15, so the test was wrong previously, and might point to a minor bug about the masks of ct_state that OVS accepts. Regarding the on-the-wire format, I think it's fine - lib/meta-flow.c has all of the MFF_CT_* checking bits, so the 32-bit on-the-wire format of the CT_STATE still rejects matches that are beyond the currently-defined flags, so we're free to rearrange struct flow however we like, as this patch does. _______________________________________________ dev mailing list [email protected] https://mail.openvswitch.org/mailman/listinfo/ovs-dev
