[ovs-dev,ovn] Add DNSSL support to OVN
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Message ID deeda56fdd3c5d31da479a202beee5c5cd8a05cd.1571678251.git.lorenzo.bianconi@redhat.com
State New
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  • [ovs-dev,ovn] Add DNSSL support to OVN
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Commit Message

Lorenzo Bianconi Oct. 21, 2019, 5:19 p.m. UTC
Introduce the possibility to specify a DNSSL option to Router
Advertisement packets. DNS Search list can be specified using
'dnssl' tag in the ipv6_ra_configs column of logical router
port table

Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
---
 controller/pinctrl.c | 62 +++++++++++++++++++++++++++++++++++++++++++-
 northd/ovn-northd.c  |  4 +++
 ovn-nb.xml           |  4 +++
 tests/ovn.at         | 30 ++++++++++++++-------
 4 files changed, 89 insertions(+), 11 deletions(-)

Comments

0-day Robot Oct. 21, 2019, 6:10 p.m. UTC | #1
Bleep bloop.  Greetings Lorenzo Bianconi, I am a robot and I have tried out your patch.
Thanks for your contribution.

I encountered some error that I wasn't expecting.  See the details below.


git-am:
Failed to merge in the changes.
Patch failed at 0001 Add DNSSL support to OVN
The copy of the patch that failed is found in:
   /var/lib/jenkins/jobs/upstream_build_from_pw/workspace/OVN/.git/rebase-apply/patch
When you have resolved this problem, run "git am --resolved".
If you prefer to skip this patch, run "git am --skip" instead.
To restore the original branch and stop patching, run "git am --abort".


Please check this out.  If you feel there has been an error, please email aconole@redhat.com

Thanks,
0-day Robot
Numan Siddique Oct. 23, 2019, 7:28 a.m. UTC | #2
On Mon, Oct 21, 2019 at 10:49 PM Lorenzo Bianconi <
lorenzo.bianconi@redhat.com> wrote:

> Introduce the possibility to specify a DNSSL option to Router
> Advertisement packets. DNS Search list can be specified using
> 'dnssl' tag in the ipv6_ra_configs column of logical router
> port table
>
> Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
>

Hi Lorenzo,

Can you please rebase. The patch has some conflicts.

Or this patch needs to be applied on top of the RDNSS patch ?

If so, can you please send it as a series addressing the compilation warning
in the rdnss patch.

Thanks
Numan


> ---
>  controller/pinctrl.c | 62 +++++++++++++++++++++++++++++++++++++++++++-
>  northd/ovn-northd.c  |  4 +++
>  ovn-nb.xml           |  4 +++
>  tests/ovn.at         | 30 ++++++++++++++-------
>  4 files changed, 89 insertions(+), 11 deletions(-)
>
> diff --git a/controller/pinctrl.c b/controller/pinctrl.c
> index 5bc4b35e7..b522e3359 100644
> --- a/controller/pinctrl.c
> +++ b/controller/pinctrl.c
> @@ -2194,6 +2194,7 @@ struct ipv6_ra_config {
>      struct lport_addresses prefixes;
>      struct in6_addr rdnss;
>      bool has_rdnss;
> +    struct ds dnssl;
>  };
>
>  struct ipv6_ra_state {
> @@ -2214,6 +2215,17 @@ struct nd_rdnss_opt {
>      const ovs_be128 dns[0];
>  };
>
> +/* DNSSL option RFC 6106 */
> +#define ND_OPT_DNSSL        31
> +#define ND_DNSSL_OPT_LEN    8
> +struct ovs_nd_dnssl {
> +    u_int8_t type;  /* ND_OPT_DNSSL */
> +    u_int8_t len;   /* >= 2 */
> +    ovs_be16 reserved;
> +    ovs_be32 lifetime;
> +    char dnssl[0];
> +};
> +
>  static void
>  init_ipv6_ras(void)
>  {
> @@ -2225,6 +2237,7 @@ ipv6_ra_config_delete(struct ipv6_ra_config *config)
>  {
>      if (config) {
>          destroy_lport_addresses(&config->prefixes);
> +        ds_destroy(&config->dnssl);
>          free(config);
>      }
>  }
> @@ -2263,6 +2276,7 @@ ipv6_ra_update_config(const struct
> sbrec_port_binding *pb)
>              nd_ra_min_interval_default(config->max_interval));
>      config->mtu = smap_get_int(&pb->options, "ipv6_ra_mtu",
> ND_MTU_DEFAULT);
>      config->la_flags = IPV6_ND_RA_OPT_PREFIX_ON_LINK;
> +    ds_init(&config->dnssl);
>
>      const char *address_mode = smap_get(&pb->options,
> "ipv6_ra_address_mode");
>      if (!address_mode) {
> @@ -2308,6 +2322,11 @@ ipv6_ra_update_config(const struct
> sbrec_port_binding *pb)
>      }
>      config->has_rdnss = !!rdnss;
>
> +    const char *dnssl = smap_get(&pb->options, "ipv6_ra_dnssl");
> +    if (dnssl) {
> +        ds_put_buffer(&config->dnssl, dnssl, strlen(dnssl));
> +    }
> +
>      return config;
>
>  fail:
> @@ -2366,6 +2385,44 @@ packet_put_ra_rdnss_opt(struct dp_packet *b,
> uint8_t num,
>                                                        prev_l4_size +
> size));
>  }
>
> +static void
> +packet_put_ra_dnssl_opt(struct dp_packet *b, ovs_be32 lifetime,
> +                        char *dnssl_list)
> +{
> +    char *t0, *r0 = dnssl_list, dnssl[255] = {};
> +    size_t prev_l4_size = dp_packet_l4_size(b);
> +    struct ip6_hdr *nh = dp_packet_l3(b);
> +    size_t size = 8;
> +    int i = 0;
> +
> +    while ((t0 = strtok_r(r0, ",", &r0))) {
> +        char *t1, *r1 = t0;
> +
> +        size += strlen(t0) + 2;
> +        while ((t1 = strtok_r(r1, ".", &r1))) {
> +            dnssl[i++] = strlen(t1);
> +            memcpy(&dnssl[i], t1, strlen(t1));
> +            i += strlen(t1);
> +        }
> +        dnssl[i++] = 0;
> +    }
> +    size = ROUND_UP(size, 8);
> +    nh->ip6_plen = htons(prev_l4_size + size);
> +
> +    struct ovs_nd_dnssl *nd_dnssl = dp_packet_put_uninit(b, size);
> +    nd_dnssl->type = ND_OPT_DNSSL;
> +    nd_dnssl->len = size / 8;
> +    nd_dnssl->reserved = 0;
> +    nd_dnssl->lifetime = lifetime;
> +    memcpy(&nd_dnssl->dnssl[0], dnssl, size);
> +
> +    struct ovs_ra_msg *ra = dp_packet_l4(b);
> +    ra->icmph.icmp6_cksum = 0;
> +    uint32_t icmp_csum = packet_csum_pseudoheader6(dp_packet_l3(b));
> +    ra->icmph.icmp6_cksum = csum_finish(csum_continue(icmp_csum, ra,
> +                                                      prev_l4_size +
> size));
> +}
> +
>  /* Called with in the pinctrl_handler thread context. */
>  static long long int
>  ipv6_ra_send(struct rconn *swconn, struct ipv6_ra_state *ra)
> @@ -2374,7 +2431,7 @@ ipv6_ra_send(struct rconn *swconn, struct
> ipv6_ra_state *ra)
>          return ra->next_announce;
>      }
>
> -    uint64_t packet_stub[128 / 8];
> +    uint64_t packet_stub[512 / 8];
>      struct dp_packet packet;
>      dp_packet_use_stub(&packet, packet_stub, sizeof packet_stub);
>      compose_nd_ra(&packet, ra->config->eth_src, ra->config->eth_dst,
> @@ -2393,6 +2450,9 @@ ipv6_ra_send(struct rconn *swconn, struct
> ipv6_ra_state *ra)
>      if (ra->config->has_rdnss) {
>          packet_put_ra_rdnss_opt(&packet, 1, 0xffffffff,
> &ra->config->rdnss);
>      }
> +    if (ra->config->dnssl.length) {
> +        packet_put_ra_dnssl_opt(&packet, 0xffffffff,
> ra->config->dnssl.string);
> +    }
>
>      uint64_t ofpacts_stub[4096 / 8];
>      struct ofpbuf ofpacts = OFPBUF_STUB_INITIALIZER(ofpacts_stub);
> diff --git a/northd/ovn-northd.c b/northd/ovn-northd.c
> index d1de36e08..dbb279052 100644
> --- a/northd/ovn-northd.c
> +++ b/northd/ovn-northd.c
> @@ -6489,6 +6489,10 @@ copy_ra_to_sb(struct ovn_port *op, const char
> *address_mode)
>      if (rdnss) {
>          smap_add(&options, "ipv6_ra_rdnss", rdnss);
>      }
> +    const char *dnssl = smap_get(&op->nbrp->ipv6_ra_configs, "dnssl");
> +    if (dnssl) {
> +        smap_add(&options, "ipv6_ra_dnssl", dnssl);
> +    }
>
>      smap_add(&options, "ipv6_ra_src_eth", op->lrp_networks.ea_s);
>
> diff --git a/ovn-nb.xml b/ovn-nb.xml
> index f1f9b969e..6f2e7dc72 100644
> --- a/ovn-nb.xml
> +++ b/ovn-nb.xml
> @@ -1889,6 +1889,10 @@
>        <column name="ipv6_ra_configs" key="rdnss">
>          IPv6 address of RDNSS server announced in RA packets
>        </column>
> +
> +      <column name="ipv6_ra_configs" key="dnssl">
> +        DNS Search List announced in RA packets
> +      </column>
>      </group>
>
>      <group title="Options">
> diff --git a/tests/ovn.at b/tests/ovn.at
> index 80d38ea4c..daf8335cf 100644
> --- a/tests/ovn.at
> +++ b/tests/ovn.at
> @@ -12538,14 +12538,15 @@ construct_expected_ra() {
>      local mtu=$1
>      local ra_mo=$2
>      local rdnss=$3
> -    local ra_prefix_la=$4
> +    local dnssl=$4
> +    local ra_prefix_la=$5
>
>      local slla=0101${src_mac}
>      local mtu_opt=""
>      if test $mtu != 0; then
>          mtu_opt=05010000${mtu}
>      fi
> -    shift 4
> +    shift 5
>
>      local prefix=""
>      while [[ $# -gt 0 ]] ; do
> @@ -12559,8 +12560,12 @@ construct_expected_ra() {
>      if test $rdnss != 0; then
>          rdnss_opt=19030000ffffffff${rdnss}
>      fi
> +    local dnssl_opt=""
> +    if test $dnssl != 0; then
> +        dnssl_opt=1f030000ffffffff${dnssl}
> +    fi
>
> -    local
> ra=ff${ra_mo}ffff0000000000000000${slla}${mtu_opt}${prefix}${rdnss_opt}
> +    local
> ra=ff${ra_mo}ffff0000000000000000${slla}${mtu_opt}${prefix}${rdnss_opt}${dnssl_opt}
>      local icmp=8600XXXX${ra}
>
>      local ip_len=$(expr ${#icmp} / 2)
> @@ -12595,28 +12600,33 @@ ra_test() {
>  }
>
>  # Baseline test with no MTU
> -ra_test 0 00 0 c0 40 aef00000000000000000000000000000
> +ra_test 0 00 0 0 c0 40 aef00000000000000000000000000000
>
>  # Now make sure an MTU option makes it
>  ovn-nbctl --wait=hv set Logical_Router_Port ro-sw ipv6_ra_configs:mtu=1500
> -ra_test 000005dc 00 0 c0 40 aef00000000000000000000000000000
> +ra_test 000005dc 00 0 0 c0 40 aef00000000000000000000000000000
>
>  # Now test for multiple network prefixes
>  ovn-nbctl --wait=hv set Logical_Router_port ro-sw networks='aef0\:\:1/64
> fd0f\:\:1/48'
> -ra_test 000005dc 00 0 c0 40 aef00000000000000000000000000000 30
> fd0f0000000000000000000000000000
> +ra_test 000005dc 00 0 0 c0 40 aef00000000000000000000000000000 30
> fd0f0000000000000000000000000000
>
>  # Now test for RDNSS
>  ovn-nbctl --wait=hv set Logical_Router_port ro-sw
> ipv6_ra_configs:rdnss='aef0::11'
>  dns_addr=aef00000000000000000000000000011
> -ra_test 000005dc 00 $dns_addr c0 40 aef00000000000000000000000000000 30
> fd0f0000000000000000000000000000
> +ra_test 000005dc 00 $dns_addr 0 c0 40 aef00000000000000000000000000000 30
> fd0f0000000000000000000000000000
> +
> +# Now test for DNSSL
> +ovn-nbctl --wait=hv set Logical_Router_port ro-sw ipv6_ra_configs:dnssl="
> aa.bb.cc"
> +dnssl=02616102626202636300000000000000
> +ra_test 000005dc 00 $dns_addr $dnssl c0 40
> aef00000000000000000000000000000 30 fd0f0000000000000000000000000000
>
> -# Test a different address mode now
> +## Test a different address mode now
>  ovn-nbctl --wait=hv set Logical_Router_Port ro-sw
> ipv6_ra_configs:address_mode=dhcpv6_stateful
> -ra_test 000005dc 80 $dns_addr 80 40 aef00000000000000000000000000000 30
> fd0f0000000000000000000000000000
> +ra_test 000005dc 80 $dns_addr $dnssl 80 40
> aef00000000000000000000000000000 30 fd0f0000000000000000000000000000
>
>  # And the other address mode
>  ovn-nbctl --wait=hv set Logical_Router_Port ro-sw
> ipv6_ra_configs:address_mode=dhcpv6_stateless
> -ra_test 000005dc 40 $dns_addr c0 40 aef00000000000000000000000000000 30
> fd0f0000000000000000000000000000
> +ra_test 000005dc 40 $dns_addr $dnssl c0 40
> aef00000000000000000000000000000 30 fd0f0000000000000000000000000000
>
>  OVN_CLEANUP([hv1],[hv2])
>  AT_CLEANUP
> --
> 2.21.0
>
> _______________________________________________
> dev mailing list
> dev@openvswitch.org
> https://mail.openvswitch.org/mailman/listinfo/ovs-dev
>
Lorenzo Bianconi Oct. 23, 2019, 9:08 a.m. UTC | #3
> On Mon, Oct 21, 2019 at 10:49 PM Lorenzo Bianconi <
> lorenzo.bianconi@redhat.com> wrote:
> 
> > Introduce the possibility to specify a DNSSL option to Router
> > Advertisement packets. DNS Search list can be specified using
> > 'dnssl' tag in the ipv6_ra_configs column of logical router
> > port table
> >
> > Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
> >
> 
> Hi Lorenzo,

Hi Numan,

> 
> Can you please rebase. The patch has some conflicts.
> 
> Or this patch needs to be applied on top of the RDNSS patch ?

Yes, it need to applied ontop of RDNSS one. I will send a v2. Thx.

Regards,
Lorenzo

> 
> If so, can you please send it as a series addressing the compilation warning
> in the rdnss patch.
> 
> Thanks
> Numan
> 
> 
> > ---
> >  controller/pinctrl.c | 62 +++++++++++++++++++++++++++++++++++++++++++-
> >  northd/ovn-northd.c  |  4 +++
> >  ovn-nb.xml           |  4 +++
> >  tests/ovn.at         | 30 ++++++++++++++-------
> >  4 files changed, 89 insertions(+), 11 deletions(-)
> >
> > diff --git a/controller/pinctrl.c b/controller/pinctrl.c
> > index 5bc4b35e7..b522e3359 100644
> > --- a/controller/pinctrl.c
> > +++ b/controller/pinctrl.c
> > @@ -2194,6 +2194,7 @@ struct ipv6_ra_config {
> >      struct lport_addresses prefixes;
> >      struct in6_addr rdnss;
> >      bool has_rdnss;
> > +    struct ds dnssl;
> >  };
> >
> >  struct ipv6_ra_state {
> > @@ -2214,6 +2215,17 @@ struct nd_rdnss_opt {
> >      const ovs_be128 dns[0];
> >  };
> >
> > +/* DNSSL option RFC 6106 */
> > +#define ND_OPT_DNSSL        31
> > +#define ND_DNSSL_OPT_LEN    8
> > +struct ovs_nd_dnssl {
> > +    u_int8_t type;  /* ND_OPT_DNSSL */
> > +    u_int8_t len;   /* >= 2 */
> > +    ovs_be16 reserved;
> > +    ovs_be32 lifetime;
> > +    char dnssl[0];
> > +};
> > +
> >  static void
> >  init_ipv6_ras(void)
> >  {
> > @@ -2225,6 +2237,7 @@ ipv6_ra_config_delete(struct ipv6_ra_config *config)
> >  {
> >      if (config) {
> >          destroy_lport_addresses(&config->prefixes);
> > +        ds_destroy(&config->dnssl);
> >          free(config);
> >      }
> >  }
> > @@ -2263,6 +2276,7 @@ ipv6_ra_update_config(const struct
> > sbrec_port_binding *pb)
> >              nd_ra_min_interval_default(config->max_interval));
> >      config->mtu = smap_get_int(&pb->options, "ipv6_ra_mtu",
> > ND_MTU_DEFAULT);
> >      config->la_flags = IPV6_ND_RA_OPT_PREFIX_ON_LINK;
> > +    ds_init(&config->dnssl);
> >
> >      const char *address_mode = smap_get(&pb->options,
> > "ipv6_ra_address_mode");
> >      if (!address_mode) {
> > @@ -2308,6 +2322,11 @@ ipv6_ra_update_config(const struct
> > sbrec_port_binding *pb)
> >      }
> >      config->has_rdnss = !!rdnss;
> >
> > +    const char *dnssl = smap_get(&pb->options, "ipv6_ra_dnssl");
> > +    if (dnssl) {
> > +        ds_put_buffer(&config->dnssl, dnssl, strlen(dnssl));
> > +    }
> > +
> >      return config;
> >
> >  fail:
> > @@ -2366,6 +2385,44 @@ packet_put_ra_rdnss_opt(struct dp_packet *b,
> > uint8_t num,
> >                                                        prev_l4_size +
> > size));
> >  }
> >
> > +static void
> > +packet_put_ra_dnssl_opt(struct dp_packet *b, ovs_be32 lifetime,
> > +                        char *dnssl_list)
> > +{
> > +    char *t0, *r0 = dnssl_list, dnssl[255] = {};
> > +    size_t prev_l4_size = dp_packet_l4_size(b);
> > +    struct ip6_hdr *nh = dp_packet_l3(b);
> > +    size_t size = 8;
> > +    int i = 0;
> > +
> > +    while ((t0 = strtok_r(r0, ",", &r0))) {
> > +        char *t1, *r1 = t0;
> > +
> > +        size += strlen(t0) + 2;
> > +        while ((t1 = strtok_r(r1, ".", &r1))) {
> > +            dnssl[i++] = strlen(t1);
> > +            memcpy(&dnssl[i], t1, strlen(t1));
> > +            i += strlen(t1);
> > +        }
> > +        dnssl[i++] = 0;
> > +    }
> > +    size = ROUND_UP(size, 8);
> > +    nh->ip6_plen = htons(prev_l4_size + size);
> > +
> > +    struct ovs_nd_dnssl *nd_dnssl = dp_packet_put_uninit(b, size);
> > +    nd_dnssl->type = ND_OPT_DNSSL;
> > +    nd_dnssl->len = size / 8;
> > +    nd_dnssl->reserved = 0;
> > +    nd_dnssl->lifetime = lifetime;
> > +    memcpy(&nd_dnssl->dnssl[0], dnssl, size);
> > +
> > +    struct ovs_ra_msg *ra = dp_packet_l4(b);
> > +    ra->icmph.icmp6_cksum = 0;
> > +    uint32_t icmp_csum = packet_csum_pseudoheader6(dp_packet_l3(b));
> > +    ra->icmph.icmp6_cksum = csum_finish(csum_continue(icmp_csum, ra,
> > +                                                      prev_l4_size +
> > size));
> > +}
> > +
> >  /* Called with in the pinctrl_handler thread context. */
> >  static long long int
> >  ipv6_ra_send(struct rconn *swconn, struct ipv6_ra_state *ra)
> > @@ -2374,7 +2431,7 @@ ipv6_ra_send(struct rconn *swconn, struct
> > ipv6_ra_state *ra)
> >          return ra->next_announce;
> >      }
> >
> > -    uint64_t packet_stub[128 / 8];
> > +    uint64_t packet_stub[512 / 8];
> >      struct dp_packet packet;
> >      dp_packet_use_stub(&packet, packet_stub, sizeof packet_stub);
> >      compose_nd_ra(&packet, ra->config->eth_src, ra->config->eth_dst,
> > @@ -2393,6 +2450,9 @@ ipv6_ra_send(struct rconn *swconn, struct
> > ipv6_ra_state *ra)
> >      if (ra->config->has_rdnss) {
> >          packet_put_ra_rdnss_opt(&packet, 1, 0xffffffff,
> > &ra->config->rdnss);
> >      }
> > +    if (ra->config->dnssl.length) {
> > +        packet_put_ra_dnssl_opt(&packet, 0xffffffff,
> > ra->config->dnssl.string);
> > +    }
> >
> >      uint64_t ofpacts_stub[4096 / 8];
> >      struct ofpbuf ofpacts = OFPBUF_STUB_INITIALIZER(ofpacts_stub);
> > diff --git a/northd/ovn-northd.c b/northd/ovn-northd.c
> > index d1de36e08..dbb279052 100644
> > --- a/northd/ovn-northd.c
> > +++ b/northd/ovn-northd.c
> > @@ -6489,6 +6489,10 @@ copy_ra_to_sb(struct ovn_port *op, const char
> > *address_mode)
> >      if (rdnss) {
> >          smap_add(&options, "ipv6_ra_rdnss", rdnss);
> >      }
> > +    const char *dnssl = smap_get(&op->nbrp->ipv6_ra_configs, "dnssl");
> > +    if (dnssl) {
> > +        smap_add(&options, "ipv6_ra_dnssl", dnssl);
> > +    }
> >
> >      smap_add(&options, "ipv6_ra_src_eth", op->lrp_networks.ea_s);
> >
> > diff --git a/ovn-nb.xml b/ovn-nb.xml
> > index f1f9b969e..6f2e7dc72 100644
> > --- a/ovn-nb.xml
> > +++ b/ovn-nb.xml
> > @@ -1889,6 +1889,10 @@
> >        <column name="ipv6_ra_configs" key="rdnss">
> >          IPv6 address of RDNSS server announced in RA packets
> >        </column>
> > +
> > +      <column name="ipv6_ra_configs" key="dnssl">
> > +        DNS Search List announced in RA packets
> > +      </column>
> >      </group>
> >
> >      <group title="Options">
> > diff --git a/tests/ovn.at b/tests/ovn.at
> > index 80d38ea4c..daf8335cf 100644
> > --- a/tests/ovn.at
> > +++ b/tests/ovn.at
> > @@ -12538,14 +12538,15 @@ construct_expected_ra() {
> >      local mtu=$1
> >      local ra_mo=$2
> >      local rdnss=$3
> > -    local ra_prefix_la=$4
> > +    local dnssl=$4
> > +    local ra_prefix_la=$5
> >
> >      local slla=0101${src_mac}
> >      local mtu_opt=""
> >      if test $mtu != 0; then
> >          mtu_opt=05010000${mtu}
> >      fi
> > -    shift 4
> > +    shift 5
> >
> >      local prefix=""
> >      while [[ $# -gt 0 ]] ; do
> > @@ -12559,8 +12560,12 @@ construct_expected_ra() {
> >      if test $rdnss != 0; then
> >          rdnss_opt=19030000ffffffff${rdnss}
> >      fi
> > +    local dnssl_opt=""
> > +    if test $dnssl != 0; then
> > +        dnssl_opt=1f030000ffffffff${dnssl}
> > +    fi
> >
> > -    local
> > ra=ff${ra_mo}ffff0000000000000000${slla}${mtu_opt}${prefix}${rdnss_opt}
> > +    local
> > ra=ff${ra_mo}ffff0000000000000000${slla}${mtu_opt}${prefix}${rdnss_opt}${dnssl_opt}
> >      local icmp=8600XXXX${ra}
> >
> >      local ip_len=$(expr ${#icmp} / 2)
> > @@ -12595,28 +12600,33 @@ ra_test() {
> >  }
> >
> >  # Baseline test with no MTU
> > -ra_test 0 00 0 c0 40 aef00000000000000000000000000000
> > +ra_test 0 00 0 0 c0 40 aef00000000000000000000000000000
> >
> >  # Now make sure an MTU option makes it
> >  ovn-nbctl --wait=hv set Logical_Router_Port ro-sw ipv6_ra_configs:mtu=1500
> > -ra_test 000005dc 00 0 c0 40 aef00000000000000000000000000000
> > +ra_test 000005dc 00 0 0 c0 40 aef00000000000000000000000000000
> >
> >  # Now test for multiple network prefixes
> >  ovn-nbctl --wait=hv set Logical_Router_port ro-sw networks='aef0\:\:1/64
> > fd0f\:\:1/48'
> > -ra_test 000005dc 00 0 c0 40 aef00000000000000000000000000000 30
> > fd0f0000000000000000000000000000
> > +ra_test 000005dc 00 0 0 c0 40 aef00000000000000000000000000000 30
> > fd0f0000000000000000000000000000
> >
> >  # Now test for RDNSS
> >  ovn-nbctl --wait=hv set Logical_Router_port ro-sw
> > ipv6_ra_configs:rdnss='aef0::11'
> >  dns_addr=aef00000000000000000000000000011
> > -ra_test 000005dc 00 $dns_addr c0 40 aef00000000000000000000000000000 30
> > fd0f0000000000000000000000000000
> > +ra_test 000005dc 00 $dns_addr 0 c0 40 aef00000000000000000000000000000 30
> > fd0f0000000000000000000000000000
> > +
> > +# Now test for DNSSL
> > +ovn-nbctl --wait=hv set Logical_Router_port ro-sw ipv6_ra_configs:dnssl="
> > aa.bb.cc"
> > +dnssl=02616102626202636300000000000000
> > +ra_test 000005dc 00 $dns_addr $dnssl c0 40
> > aef00000000000000000000000000000 30 fd0f0000000000000000000000000000
> >
> > -# Test a different address mode now
> > +## Test a different address mode now
> >  ovn-nbctl --wait=hv set Logical_Router_Port ro-sw
> > ipv6_ra_configs:address_mode=dhcpv6_stateful
> > -ra_test 000005dc 80 $dns_addr 80 40 aef00000000000000000000000000000 30
> > fd0f0000000000000000000000000000
> > +ra_test 000005dc 80 $dns_addr $dnssl 80 40
> > aef00000000000000000000000000000 30 fd0f0000000000000000000000000000
> >
> >  # And the other address mode
> >  ovn-nbctl --wait=hv set Logical_Router_Port ro-sw
> > ipv6_ra_configs:address_mode=dhcpv6_stateless
> > -ra_test 000005dc 40 $dns_addr c0 40 aef00000000000000000000000000000 30
> > fd0f0000000000000000000000000000
> > +ra_test 000005dc 40 $dns_addr $dnssl c0 40
> > aef00000000000000000000000000000 30 fd0f0000000000000000000000000000
> >
> >  OVN_CLEANUP([hv1],[hv2])
> >  AT_CLEANUP
> > --
> > 2.21.0
> >
> > _______________________________________________
> > dev mailing list
> > dev@openvswitch.org
> > https://mail.openvswitch.org/mailman/listinfo/ovs-dev
> >

Patch
diff mbox series

diff --git a/controller/pinctrl.c b/controller/pinctrl.c
index 5bc4b35e7..b522e3359 100644
--- a/controller/pinctrl.c
+++ b/controller/pinctrl.c
@@ -2194,6 +2194,7 @@  struct ipv6_ra_config {
     struct lport_addresses prefixes;
     struct in6_addr rdnss;
     bool has_rdnss;
+    struct ds dnssl;
 };
 
 struct ipv6_ra_state {
@@ -2214,6 +2215,17 @@  struct nd_rdnss_opt {
     const ovs_be128 dns[0];
 };
 
+/* DNSSL option RFC 6106 */
+#define ND_OPT_DNSSL        31
+#define ND_DNSSL_OPT_LEN    8
+struct ovs_nd_dnssl {
+    u_int8_t type;  /* ND_OPT_DNSSL */
+    u_int8_t len;   /* >= 2 */
+    ovs_be16 reserved;
+    ovs_be32 lifetime;
+    char dnssl[0];
+};
+
 static void
 init_ipv6_ras(void)
 {
@@ -2225,6 +2237,7 @@  ipv6_ra_config_delete(struct ipv6_ra_config *config)
 {
     if (config) {
         destroy_lport_addresses(&config->prefixes);
+        ds_destroy(&config->dnssl);
         free(config);
     }
 }
@@ -2263,6 +2276,7 @@  ipv6_ra_update_config(const struct sbrec_port_binding *pb)
             nd_ra_min_interval_default(config->max_interval));
     config->mtu = smap_get_int(&pb->options, "ipv6_ra_mtu", ND_MTU_DEFAULT);
     config->la_flags = IPV6_ND_RA_OPT_PREFIX_ON_LINK;
+    ds_init(&config->dnssl);
 
     const char *address_mode = smap_get(&pb->options, "ipv6_ra_address_mode");
     if (!address_mode) {
@@ -2308,6 +2322,11 @@  ipv6_ra_update_config(const struct sbrec_port_binding *pb)
     }
     config->has_rdnss = !!rdnss;
 
+    const char *dnssl = smap_get(&pb->options, "ipv6_ra_dnssl");
+    if (dnssl) {
+        ds_put_buffer(&config->dnssl, dnssl, strlen(dnssl));
+    }
+
     return config;
 
 fail:
@@ -2366,6 +2385,44 @@  packet_put_ra_rdnss_opt(struct dp_packet *b, uint8_t num,
                                                       prev_l4_size + size));
 }
 
+static void
+packet_put_ra_dnssl_opt(struct dp_packet *b, ovs_be32 lifetime,
+                        char *dnssl_list)
+{
+    char *t0, *r0 = dnssl_list, dnssl[255] = {};
+    size_t prev_l4_size = dp_packet_l4_size(b);
+    struct ip6_hdr *nh = dp_packet_l3(b);
+    size_t size = 8;
+    int i = 0;
+
+    while ((t0 = strtok_r(r0, ",", &r0))) {
+        char *t1, *r1 = t0;
+
+        size += strlen(t0) + 2;
+        while ((t1 = strtok_r(r1, ".", &r1))) {
+            dnssl[i++] = strlen(t1);
+            memcpy(&dnssl[i], t1, strlen(t1));
+            i += strlen(t1);
+        }
+        dnssl[i++] = 0;
+    }
+    size = ROUND_UP(size, 8);
+    nh->ip6_plen = htons(prev_l4_size + size);
+
+    struct ovs_nd_dnssl *nd_dnssl = dp_packet_put_uninit(b, size);
+    nd_dnssl->type = ND_OPT_DNSSL;
+    nd_dnssl->len = size / 8;
+    nd_dnssl->reserved = 0;
+    nd_dnssl->lifetime = lifetime;
+    memcpy(&nd_dnssl->dnssl[0], dnssl, size);
+
+    struct ovs_ra_msg *ra = dp_packet_l4(b);
+    ra->icmph.icmp6_cksum = 0;
+    uint32_t icmp_csum = packet_csum_pseudoheader6(dp_packet_l3(b));
+    ra->icmph.icmp6_cksum = csum_finish(csum_continue(icmp_csum, ra,
+                                                      prev_l4_size + size));
+}
+
 /* Called with in the pinctrl_handler thread context. */
 static long long int
 ipv6_ra_send(struct rconn *swconn, struct ipv6_ra_state *ra)
@@ -2374,7 +2431,7 @@  ipv6_ra_send(struct rconn *swconn, struct ipv6_ra_state *ra)
         return ra->next_announce;
     }
 
-    uint64_t packet_stub[128 / 8];
+    uint64_t packet_stub[512 / 8];
     struct dp_packet packet;
     dp_packet_use_stub(&packet, packet_stub, sizeof packet_stub);
     compose_nd_ra(&packet, ra->config->eth_src, ra->config->eth_dst,
@@ -2393,6 +2450,9 @@  ipv6_ra_send(struct rconn *swconn, struct ipv6_ra_state *ra)
     if (ra->config->has_rdnss) {
         packet_put_ra_rdnss_opt(&packet, 1, 0xffffffff, &ra->config->rdnss);
     }
+    if (ra->config->dnssl.length) {
+        packet_put_ra_dnssl_opt(&packet, 0xffffffff, ra->config->dnssl.string);
+    }
 
     uint64_t ofpacts_stub[4096 / 8];
     struct ofpbuf ofpacts = OFPBUF_STUB_INITIALIZER(ofpacts_stub);
diff --git a/northd/ovn-northd.c b/northd/ovn-northd.c
index d1de36e08..dbb279052 100644
--- a/northd/ovn-northd.c
+++ b/northd/ovn-northd.c
@@ -6489,6 +6489,10 @@  copy_ra_to_sb(struct ovn_port *op, const char *address_mode)
     if (rdnss) {
         smap_add(&options, "ipv6_ra_rdnss", rdnss);
     }
+    const char *dnssl = smap_get(&op->nbrp->ipv6_ra_configs, "dnssl");
+    if (dnssl) {
+        smap_add(&options, "ipv6_ra_dnssl", dnssl);
+    }
 
     smap_add(&options, "ipv6_ra_src_eth", op->lrp_networks.ea_s);
 
diff --git a/ovn-nb.xml b/ovn-nb.xml
index f1f9b969e..6f2e7dc72 100644
--- a/ovn-nb.xml
+++ b/ovn-nb.xml
@@ -1889,6 +1889,10 @@ 
       <column name="ipv6_ra_configs" key="rdnss">
         IPv6 address of RDNSS server announced in RA packets
       </column>
+
+      <column name="ipv6_ra_configs" key="dnssl">
+        DNS Search List announced in RA packets
+      </column>
     </group>
 
     <group title="Options">
diff --git a/tests/ovn.at b/tests/ovn.at
index 80d38ea4c..daf8335cf 100644
--- a/tests/ovn.at
+++ b/tests/ovn.at
@@ -12538,14 +12538,15 @@  construct_expected_ra() {
     local mtu=$1
     local ra_mo=$2
     local rdnss=$3
-    local ra_prefix_la=$4
+    local dnssl=$4
+    local ra_prefix_la=$5
 
     local slla=0101${src_mac}
     local mtu_opt=""
     if test $mtu != 0; then
         mtu_opt=05010000${mtu}
     fi
-    shift 4
+    shift 5
 
     local prefix=""
     while [[ $# -gt 0 ]] ; do
@@ -12559,8 +12560,12 @@  construct_expected_ra() {
     if test $rdnss != 0; then
         rdnss_opt=19030000ffffffff${rdnss}
     fi
+    local dnssl_opt=""
+    if test $dnssl != 0; then
+        dnssl_opt=1f030000ffffffff${dnssl}
+    fi
 
-    local ra=ff${ra_mo}ffff0000000000000000${slla}${mtu_opt}${prefix}${rdnss_opt}
+    local ra=ff${ra_mo}ffff0000000000000000${slla}${mtu_opt}${prefix}${rdnss_opt}${dnssl_opt}
     local icmp=8600XXXX${ra}
 
     local ip_len=$(expr ${#icmp} / 2)
@@ -12595,28 +12600,33 @@  ra_test() {
 }
 
 # Baseline test with no MTU
-ra_test 0 00 0 c0 40 aef00000000000000000000000000000
+ra_test 0 00 0 0 c0 40 aef00000000000000000000000000000
 
 # Now make sure an MTU option makes it
 ovn-nbctl --wait=hv set Logical_Router_Port ro-sw ipv6_ra_configs:mtu=1500
-ra_test 000005dc 00 0 c0 40 aef00000000000000000000000000000
+ra_test 000005dc 00 0 0 c0 40 aef00000000000000000000000000000
 
 # Now test for multiple network prefixes
 ovn-nbctl --wait=hv set Logical_Router_port ro-sw networks='aef0\:\:1/64 fd0f\:\:1/48'
-ra_test 000005dc 00 0 c0 40 aef00000000000000000000000000000 30 fd0f0000000000000000000000000000
+ra_test 000005dc 00 0 0 c0 40 aef00000000000000000000000000000 30 fd0f0000000000000000000000000000
 
 # Now test for RDNSS
 ovn-nbctl --wait=hv set Logical_Router_port ro-sw ipv6_ra_configs:rdnss='aef0::11'
 dns_addr=aef00000000000000000000000000011
-ra_test 000005dc 00 $dns_addr c0 40 aef00000000000000000000000000000 30 fd0f0000000000000000000000000000
+ra_test 000005dc 00 $dns_addr 0 c0 40 aef00000000000000000000000000000 30 fd0f0000000000000000000000000000
+
+# Now test for DNSSL
+ovn-nbctl --wait=hv set Logical_Router_port ro-sw ipv6_ra_configs:dnssl="aa.bb.cc"
+dnssl=02616102626202636300000000000000
+ra_test 000005dc 00 $dns_addr $dnssl c0 40 aef00000000000000000000000000000 30 fd0f0000000000000000000000000000
 
-# Test a different address mode now
+## Test a different address mode now
 ovn-nbctl --wait=hv set Logical_Router_Port ro-sw ipv6_ra_configs:address_mode=dhcpv6_stateful
-ra_test 000005dc 80 $dns_addr 80 40 aef00000000000000000000000000000 30 fd0f0000000000000000000000000000
+ra_test 000005dc 80 $dns_addr $dnssl 80 40 aef00000000000000000000000000000 30 fd0f0000000000000000000000000000
 
 # And the other address mode
 ovn-nbctl --wait=hv set Logical_Router_Port ro-sw ipv6_ra_configs:address_mode=dhcpv6_stateless
-ra_test 000005dc 40 $dns_addr c0 40 aef00000000000000000000000000000 30 fd0f0000000000000000000000000000
+ra_test 000005dc 40 $dns_addr $dnssl c0 40 aef00000000000000000000000000000 30 fd0f0000000000000000000000000000
 
 OVN_CLEANUP([hv1],[hv2])
 AT_CLEANUP