[ovs-dev] [PATCH] netdev-offload-tc: Revert tunnel src/dst port masks handling

Roi Dayan roid at mellanox.com
Tue Jun 16 15:29:14 UTC 2020



On 2020-06-16 5:06 PM, Roi Dayan wrote:
> 
> 
> On 2020-06-16 4:03 PM, Roi Dayan wrote:
>> The cited commit intended to add tc support for masking tunnel src/dst
>> ips and ports. It's not possible to do tunnel ports masking with
>> openflow rules and the default mask for tunnel ports set to 0 in
>> tnl_wc_init(), unlike tunnel ports default mask which is full mask.
>> So instead of never passing tunnel ports to tc, revert the changes
>> to tunnel ports to always pass the tunnel port.
>> In sw classification is done by the kernel, but for hw we must match
>> the tunnel dst port.
>>
>> Fixes: 5f568d049130 ("netdev-offload-tc: Allow to match the IP and port mask of tunnel")
>> Signed-off-by: Roi Dayan <roid at mellanox.com>
>> Reviewed-by: Eli Britstein <elibr at mellanox.com>
>> ---
>>  NEWS                        |  2 --
>>  include/openvswitch/match.h |  3 ---
>>  lib/match.c                 | 13 -------------
>>  lib/netdev-offload-tc.c     | 13 ++-----------
>>  lib/tc.c                    | 28 ++--------------------------
>>  tests/tunnel.at             |  4 ++--
>>  6 files changed, 6 insertions(+), 57 deletions(-)
>>
>> diff --git a/NEWS b/NEWS
>> index 88b273a0af89..22cacda20ac7 100644
>> --- a/NEWS
>> +++ b/NEWS
>> @@ -19,8 +19,6 @@ Post-v2.13.0
>>     - Tunnels: TC Flower offload
>>       * Tunnel Local endpoint address masked match are supported.
>>       * Tunnel Romte endpoint address masked match are supported.
>> -     * Tunnel Local endpoint ports masked match are supported.
>> -     * Tunnel Romte endpoint ports masked match are supported.
>>  
>>  
>>  v2.13.0 - 14 Feb 2020
>> diff --git a/include/openvswitch/match.h b/include/openvswitch/match.h
>> index 9e480318e2b3..2e8812048e86 100644
>> --- a/include/openvswitch/match.h
>> +++ b/include/openvswitch/match.h
>> @@ -105,9 +105,6 @@ void match_set_tun_flags(struct match *match, uint16_t flags);
>>  void match_set_tun_flags_masked(struct match *match, uint16_t flags, uint16_t mask);
>>  void match_set_tun_tp_dst(struct match *match, ovs_be16 tp_dst);
>>  void match_set_tun_tp_dst_masked(struct match *match, ovs_be16 port, ovs_be16 mask);
>> -void match_set_tun_tp_src(struct match *match, ovs_be16 tp_src);
>> -void match_set_tun_tp_src_masked(struct match *match,
>> -                                 ovs_be16 port, ovs_be16 mask);
>>  void match_set_tun_gbp_id_masked(struct match *match, ovs_be16 gbp_id, ovs_be16 mask);
>>  void match_set_tun_gbp_id(struct match *match, ovs_be16 gbp_id);
>>  void match_set_tun_gbp_flags_masked(struct match *match, uint8_t flags, uint8_t mask);
>> diff --git a/lib/match.c b/lib/match.c
>> index a77554851146..ba716579d8ec 100644
>> --- a/lib/match.c
>> +++ b/lib/match.c
>> @@ -294,19 +294,6 @@ match_set_tun_tp_dst_masked(struct match *match, ovs_be16 port, ovs_be16 mask)
>>  }
>>  
>>  void
>> -match_set_tun_tp_src(struct match *match, ovs_be16 tp_src)
>> -{
>> -    match_set_tun_tp_src_masked(match, tp_src, OVS_BE16_MAX);
>> -}
>> -
>> -void
>> -match_set_tun_tp_src_masked(struct match *match, ovs_be16 port, ovs_be16 mask)
>> -{
>> -    match->wc.masks.tunnel.tp_src = mask;
>> -    match->flow.tunnel.tp_src = port & mask;
>> -}
>> -
>> -void
>>  match_set_tun_gbp_id_masked(struct match *match, ovs_be16 gbp_id, ovs_be16 mask)
>>  {
>>      match->wc.masks.tunnel.gbp_id = mask;
>> diff --git a/lib/netdev-offload-tc.c b/lib/netdev-offload-tc.c
>> index aa6d22e74f29..258d31f54b08 100644
>> --- a/lib/netdev-offload-tc.c
>> +++ b/lib/netdev-offload-tc.c
>> @@ -712,15 +712,8 @@ parse_tc_flower_to_match(struct tc_flower *flower,
>>              match_set_tun_ttl_masked(match, flower->key.tunnel.ttl,
>>                                       flower->mask.tunnel.ttl);
>>          }
>> -        if (flower->mask.tunnel.tp_dst) {
>> -            match_set_tun_tp_dst_masked(match,
>> -                                        flower->key.tunnel.tp_dst,
>> -                                        flower->mask.tunnel.tp_dst);
>> -        }
>> -        if (flower->mask.tunnel.tp_src) {
>> -            match_set_tun_tp_src_masked(match,
>> -                                        flower->key.tunnel.tp_src,
>> -                                        flower->mask.tunnel.tp_src);
>> +        if (flower->key.tunnel.tp_dst) {
>> +            match_set_tun_tp_dst(match, flower->key.tunnel.tp_dst);
>>          }
>>          if (flower->key.tunnel.metadata.present.len) {
>>              flower_tun_opt_to_match(match, flower);
>> @@ -1470,8 +1463,6 @@ netdev_tc_flow_put(struct netdev *netdev, struct match *match,
>>          flower.mask.tunnel.ipv6.ipv6_dst = tnl_mask->ipv6_dst;
>>          flower.mask.tunnel.tos = tnl_mask->ip_tos;
>>          flower.mask.tunnel.ttl = tnl_mask->ip_ttl;
>> -        flower.mask.tunnel.tp_src = tnl_mask->tp_src;
>> -        flower.mask.tunnel.tp_dst = tnl_mask->tp_dst;
>>          flower.mask.tunnel.id = (tnl->flags & FLOW_TNL_F_KEY) ? tnl_mask->tun_id : 0;
>>          flower_match_to_tun_opt(&flower, tnl, tnl_mask);
>>          flower.tunnel = true;
>> diff --git a/lib/tc.c b/lib/tc.c
>> index 29b4328d8bfc..c2ab77553306 100644
>> --- a/lib/tc.c
>> +++ b/lib/tc.c
>> @@ -395,12 +395,6 @@ static const struct nl_policy tca_flower_policy[] = {
>>                                             .optional = true, },
>>      [TCA_FLOWER_KEY_ENC_UDP_DST_PORT] = { .type = NL_A_U16,
>>                                            .optional = true, },
>> -    [TCA_FLOWER_KEY_ENC_UDP_SRC_PORT] = { .type = NL_A_U16,
>> -                                          .optional = true, },
>> -    [TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK] = { .type = NL_A_U16,
>> -                                               .optional = true, },
>> -    [TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK] = { .type = NL_A_U16,
>> -                                               .optional = true, },
>>      [TCA_FLOWER_KEY_FLAGS] = { .type = NL_A_BE32, .optional = true, },
>>      [TCA_FLOWER_KEY_FLAGS_MASK] = { .type = NL_A_BE32, .optional = true, },
>>      [TCA_FLOWER_KEY_IP_TTL] = { .type = NL_A_U8,
>> @@ -746,15 +740,7 @@ nl_parse_flower_tunnel(struct nlattr **attrs, struct tc_flower *flower)
>>          flower->key.tunnel.ipv6.ipv6_dst =
>>              nl_attr_get_in6_addr(attrs[TCA_FLOWER_KEY_ENC_IPV6_DST]);
>>      }
>> -    if (attrs[TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK]) {
>> -        flower->mask.tunnel.tp_src =
>> -            nl_attr_get_be16(attrs[TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK]);
>> -        flower->key.tunnel.tp_src =
>> -            nl_attr_get_be16(attrs[TCA_FLOWER_KEY_ENC_UDP_SRC_PORT]);
>> -    }
>> -    if (attrs[TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK]) {
>> -        flower->mask.tunnel.tp_dst =
>> -            nl_attr_get_be16(attrs[TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK]);
>> +    if (attrs[TCA_FLOWER_KEY_ENC_UDP_DST_PORT]) {
>>          flower->key.tunnel.tp_dst =
>>              nl_attr_get_be16(attrs[TCA_FLOWER_KEY_ENC_UDP_DST_PORT]);
>>      }
>> @@ -2713,10 +2699,7 @@ nl_msg_put_flower_tunnel(struct ofpbuf *request, struct tc_flower *flower)
>>      struct in6_addr *ipv6_dst_mask = &flower->mask.tunnel.ipv6.ipv6_dst;
>>      struct in6_addr *ipv6_src = &flower->key.tunnel.ipv6.ipv6_src;
>>      struct in6_addr *ipv6_dst = &flower->key.tunnel.ipv6.ipv6_dst;
>> -    ovs_be16 tp_dst_mask = flower->mask.tunnel.tp_dst;
>> -    ovs_be16 tp_src_mask = flower->mask.tunnel.tp_src;
>>      ovs_be16 tp_dst = flower->key.tunnel.tp_dst;
>> -    ovs_be16 tp_src = flower->key.tunnel.tp_src;
>>      ovs_be32 id = be64_to_be32(flower->key.tunnel.id);
>>      uint8_t tos = flower->key.tunnel.tos;
>>      uint8_t ttl = flower->key.tunnel.ttl;
>> @@ -2748,16 +2731,9 @@ nl_msg_put_flower_tunnel(struct ofpbuf *request, struct tc_flower *flower)
>>          nl_msg_put_u8(request, TCA_FLOWER_KEY_ENC_IP_TTL, ttl);
>>          nl_msg_put_u8(request, TCA_FLOWER_KEY_ENC_IP_TTL_MASK, ttl_mask);
>>      }
>> -    if (tp_dst_mask) {
>> -        nl_msg_put_be16(request, TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK,
>> -                        tp_dst_mask);
>> +    if (tp_dst) {
>>          nl_msg_put_be16(request, TCA_FLOWER_KEY_ENC_UDP_DST_PORT, tp_dst);
>>      }
>> -    if (tp_src_mask) {
>> -        nl_msg_put_be16(request, TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK,
>> -                        tp_src_mask);
>> -        nl_msg_put_be16(request, TCA_FLOWER_KEY_ENC_UDP_SRC_PORT, tp_src);
>> -    }
>>      if (id_mask) {
>>          nl_msg_put_be32(request, TCA_FLOWER_KEY_ENC_KEY_ID, id);
>>      }
>> diff --git a/tests/tunnel.at b/tests/tunnel.at
>> index a74a67aa8123..e08fd1e048f8 100644
>> --- a/tests/tunnel.at
>> +++ b/tests/tunnel.at
>> @@ -123,10 +123,10 @@ AT_CHECK([ovs-appctl dpif/show | tail -n +3], [0], [dnl
>>      p2 2/2: (dummy)
>>  ])
>>  
>> -AT_CHECK([ovs-appctl dpctl/add-flow "tunnel(dst=1.1.1.1,src=3.3.3.200/255.255.255.0,tp_dst=123,tp_src=1/0xf,ttl=64),recirc_id(0),in_port(1),eth(),eth_type(0x0800),ipv4()" "2"])
>> +AT_CHECK([ovs-appctl dpctl/add-flow "tunnel(dst=1.1.1.1,src=3.3.3.200/255.255.255.0,tp_dst=123,tp_src=1,ttl=64),recirc_id(0),in_port(1),eth(),eth_type(0x0800),ipv4()" "2"])
>>  
>>  AT_CHECK([ovs-appctl dpctl/dump-flows | tail -1], [0], [dnl
>> -tunnel(src=3.3.3.200/255.255.255.0,dst=1.1.1.1,ttl=64,tp_src=1/0xf,tp_dst=123),recirc_id(0),in_port(1),eth_type(0x0800), packets:0, bytes:0, used:never, actions:2
>> +tunnel(src=3.3.3.200/255.255.255.0,dst=1.1.1.1,ttl=64,tp_src=1,tp_dst=123),recirc_id(0),in_port(1),eth_type(0x0800), packets:0, bytes:0, used:never, actions:2
>>  ])
>>  
>>  OVS_VSWITCHD_STOP
>>
> 
> 
> travis ci results link
> https://travis-ci.org/github/roidayan/ovs/builds/698910052
> 

+ilya



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