On Tue, Apr 24, 2018 at 07:40:24AM +0000, Xueming(Steven) Li wrote:
>
>
> > -----Original Message-----
> > From: Nélio Laranjeiro <nelio.laranje...@6wind.com>
> > Sent: Monday, April 23, 2018 9:46 PM
> > To: Xueming(Steven) Li <xuemi...@mellanox.com>
> > Cc: Shahaf Shuler <shah...@mellanox.com>; dev@dpdk.org
> > Subject: Re: [PATCH v6 02/11] net/mlx5: support GRE tunnel flow
> >
> > On Mon, Apr 23, 2018 at 01:32:23PM +0000, Xueming(Steven) Li wrote:
> > > Hi Nelio,
> > >
> > > > -----Original Message-----
> > > > From: Nélio Laranjeiro <nelio.laranje...@6wind.com>
> > > > Sent: Monday, April 23, 2018 8:56 PM
> > > > To: Xueming(Steven) Li <xuemi...@mellanox.com>
> > > > Cc: Shahaf Shuler <shah...@mellanox.com>; dev@dpdk.org
> > > > Subject: Re: [PATCH v6 02/11] net/mlx5: support GRE tunnel flow
> > > >
> > > > On Mon, Apr 23, 2018 at 08:33:01PM +0800, Xueming Li wrote:
> > > > > Signed-off-by: Xueming Li <xuemi...@mellanox.com>
> > > > > ---
> > > > > drivers/net/mlx5/mlx5_flow.c | 101
> > > > > ++++++++++++++++++++++++++++++++++++++++---
> > > > > 1 file changed, 94 insertions(+), 7 deletions(-)
> > > > >
> > > > > diff --git a/drivers/net/mlx5/mlx5_flow.c
> > > > > b/drivers/net/mlx5/mlx5_flow.c index 5402cb148..b365f9868 100644
> > > > > --- a/drivers/net/mlx5/mlx5_flow.c
> > > > > +++ b/drivers/net/mlx5/mlx5_flow.c
> > > > > @@ -37,6 +37,7 @@
> > > > > /* Internet Protocol versions. */ #define MLX5_IPV4 4 #define
> > > > > MLX5_IPV6 6
> > > > > +#define MLX5_GRE 47
> > > > >
> > > > > #ifndef HAVE_IBV_DEVICE_COUNTERS_SET_SUPPORT
> > > > > struct ibv_flow_spec_counter_action { @@ -89,6 +90,11 @@
> > > > > mlx5_flow_create_vxlan(const struct rte_flow_item *item,
> > > > > const void *default_mask,
> > > > > struct mlx5_flow_data *data);
> > > > >
> > > > > +static int
> > > > > +mlx5_flow_create_gre(const struct rte_flow_item *item,
> > > > > + const void *default_mask,
> > > > > + struct mlx5_flow_data *data);
> > > > > +
> > > > > struct mlx5_flow_parse;
> > > > >
> > > > > static void
> > > > > @@ -231,6 +237,10 @@ struct rte_flow {
> > > > > __VA_ARGS__, RTE_FLOW_ITEM_TYPE_END, \
> > > > > }
> > > > >
> > > > > +#define IS_TUNNEL(type) ( \
> > > > > + (type) == RTE_FLOW_ITEM_TYPE_VXLAN || \
> > > > > + (type) == RTE_FLOW_ITEM_TYPE_GRE)
> > > > > +
> > > > > /** Structure to generate a simple graph of layers supported by
> > > > > the NIC. */ struct mlx5_flow_items {
> > > > > /** List of possible actions for these items. */ @@ -284,7
> > > > > +294,8 @@ static const enum rte_flow_action_type valid_actions[] =
> > > > > { static const struct mlx5_flow_items mlx5_flow_items[] = {
> > > > > [RTE_FLOW_ITEM_TYPE_END] = {
> > > > > .items = ITEMS(RTE_FLOW_ITEM_TYPE_ETH,
> > > > > - RTE_FLOW_ITEM_TYPE_VXLAN),
> > > > > + RTE_FLOW_ITEM_TYPE_VXLAN,
> > > > > + RTE_FLOW_ITEM_TYPE_GRE),
> > > > > },
> > > > > [RTE_FLOW_ITEM_TYPE_ETH] = {
> > > > > .items = ITEMS(RTE_FLOW_ITEM_TYPE_VLAN, @@ -316,7
> > > > > +327,8 @@
> > > > > static const struct mlx5_flow_items mlx5_flow_items[] = {
> > > > > },
> > > > > [RTE_FLOW_ITEM_TYPE_IPV4] = {
> > > > > .items = ITEMS(RTE_FLOW_ITEM_TYPE_UDP,
> > > > > - RTE_FLOW_ITEM_TYPE_TCP),
> > > > > + RTE_FLOW_ITEM_TYPE_TCP,
> > > > > + RTE_FLOW_ITEM_TYPE_GRE),
> > > > > .actions = valid_actions,
> > > > > .mask = &(const struct rte_flow_item_ipv4){
> > > > > .hdr = {
> > > > > @@ -333,7 +345,8 @@ static const struct mlx5_flow_items
> > > > > mlx5_flow_items[] = {
> > > > > },
> > > > > [RTE_FLOW_ITEM_TYPE_IPV6] = {
> > > > > .items = ITEMS(RTE_FLOW_ITEM_TYPE_UDP,
> > > > > - RTE_FLOW_ITEM_TYPE_TCP),
> > > > > + RTE_FLOW_ITEM_TYPE_TCP,
> > > > > + RTE_FLOW_ITEM_TYPE_GRE),
> > > > > .actions = valid_actions,
> > > > > .mask = &(const struct rte_flow_item_ipv6){
> > > > > .hdr = {
> > > > > @@ -386,6 +399,19 @@ static const struct mlx5_flow_items
> > > > > mlx5_flow_items[] = {
> > > > > .convert = mlx5_flow_create_tcp,
> > > > > .dst_sz = sizeof(struct ibv_flow_spec_tcp_udp),
> > > > > },
> > > > > + [RTE_FLOW_ITEM_TYPE_GRE] = {
> > > > > + .items = ITEMS(RTE_FLOW_ITEM_TYPE_ETH,
> > > > > + RTE_FLOW_ITEM_TYPE_IPV4,
> > > > > + RTE_FLOW_ITEM_TYPE_IPV6),
> > > > > + .actions = valid_actions,
> > > > > + .mask = &(const struct rte_flow_item_gre){
> > > > > + .protocol = -1,
> > > > > + },
> > > > > + .default_mask = &rte_flow_item_gre_mask,
> > > > > + .mask_sz = sizeof(struct rte_flow_item_gre),
> > > > > + .convert = mlx5_flow_create_gre,
> > > > > + .dst_sz = sizeof(struct ibv_flow_spec_tunnel),
> > > > > + },
> > > > > [RTE_FLOW_ITEM_TYPE_VXLAN] = {
> > > > > .items = ITEMS(RTE_FLOW_ITEM_TYPE_ETH),
> > > > > .actions = valid_actions,
> > > > > @@ -401,7 +427,7 @@ static const struct mlx5_flow_items
> > > > > mlx5_flow_items[] = {
> > > > >
> > > > > /** Structure to pass to the conversion function. */ struct
> > > > > mlx5_flow_parse {
> > > > > - uint32_t inner; /**< Set once VXLAN is encountered. */
> > > > > + uint32_t inner; /**< Verbs value, set once tunnel is
> > > > > +encountered. */
> > > > > uint32_t create:1;
> > > > > /**< Whether resources should remain after a validate. */
> > > > > uint32_t drop:1; /**< Target is a drop queue. */ @@ -829,13
> > > > > +855,13 @@ mlx5_flow_convert_items_validate(const struct
> > > > > rte_flow_item items[],
> > > > > cur_item->mask_sz);
> > > > > if (ret)
> > > > > goto exit_item_not_supported;
> > > > > - if (items->type == RTE_FLOW_ITEM_TYPE_VXLAN) {
> > > > > + if (IS_TUNNEL(items->type)) {
> > > > > if (parser->inner) {
> > > > > rte_flow_error_set(error, ENOTSUP,
> > > > >
> > > > > RTE_FLOW_ERROR_TYPE_ITEM,
> > > > > items,
> > > > > - "cannot recognize
> > > > > multiple"
> > > > > - " VXLAN
> > > > > encapsulations");
> > > > > + "Cannot recognize
> > > > > multiple"
> > > > > + " tunnel
> > > > > encapsulations.");
> > > > > return -rte_errno;
> > > > > }
> > > > > parser->inner = IBV_FLOW_SPEC_INNER; @@ -1641,6
> > > > > +1667,67 @@
> > > > > mlx5_flow_create_vxlan(const struct rte_flow_item *item, }
> > > > >
> > > > > /**
> > > > > + * Convert GRE item to Verbs specification.
> > > > > + *
> > > > > + * @param item[in]
> > > > > + * Item specification.
> > > > > + * @param default_mask[in]
> > > > > + * Default bit-masks to use when item->mask is not provided.
> > > > > + * @param data[in, out]
> > > > > + * User structure.
> > > > > + *
> > > > > + * @return
> > > > > + * 0 on success, a negative errno value otherwise and rte_errno is
> > > > > set.
> > > > > + */
> > > > > +static int
> > > > > +mlx5_flow_create_gre(const struct rte_flow_item *item __rte_unused,
> > > > > + const void *default_mask __rte_unused,
> > > > > + struct mlx5_flow_data *data) {
> > > > > + struct mlx5_flow_parse *parser = data->parser;
> > > > > + unsigned int size = sizeof(struct ibv_flow_spec_tunnel);
> > > > > + struct ibv_flow_spec_tunnel tunnel = {
> > > > > + .type = parser->inner | IBV_FLOW_SPEC_VXLAN_TUNNEL,
> > > > > + .size = size,
> > > > > + };
> > > > > + struct ibv_flow_spec_ipv4_ext *ipv4;
> > > > > + struct ibv_flow_spec_ipv6 *ipv6;
> > > > > + unsigned int i;
> > > > > +
> > > > > + parser->inner = IBV_FLOW_SPEC_INNER;
> > > > > + /* Update encapsulation IP layer protocol. */
> > > > > + for (i = 0; i != hash_rxq_init_n; ++i) {
> > > > > + if (!parser->queue[i].ibv_attr)
> > > > > + continue;
> > > > > + if (parser->out_layer == HASH_RXQ_IPV4) {
> > > > > + ipv4 = (void
> > > > > *)((uintptr_t)parser->queue[i].ibv_attr +
> > > > > + parser->queue[i].offset -
> > > > > + sizeof(struct ibv_flow_spec_ipv4_ext));
> > > > > + if (ipv4->mask.proto && ipv4->val.proto !=
> > > > > MLX5_GRE)
> > > > > + break;
> > > > > + ipv4->val.proto = MLX5_GRE;
> > > > > + ipv4->mask.proto = 0xff;
> > > > > + } else if (parser->out_layer == HASH_RXQ_IPV6) {
> > > > > + ipv6 = (void
> > > > > *)((uintptr_t)parser->queue[i].ibv_attr +
> > > > > + parser->queue[i].offset -
> > > > > + sizeof(struct ibv_flow_spec_ipv6));
> > > > > + if (ipv6->mask.next_hdr &&
> > > > > + ipv6->val.next_hdr != MLX5_GRE)
> > > > > + break;
> > > > > + ipv6->val.next_hdr = MLX5_GRE;
> > > > > + ipv6->mask.next_hdr = 0xff;
> > > > > + }
> > > > > + }
> > > > > + if (i != hash_rxq_init_n)
> > > > > + return rte_flow_error_set(data->error, EINVAL,
> > > > > + RTE_FLOW_ERROR_TYPE_ITEM,
> > > > > + item,
> > > > > + "IP protocol of GRE must be
> > > > > 47");
> > > > > + mlx5_flow_create_copy(parser, &tunnel, size);
> > > > > + return 0;
> > > > > +}
> > > >
> > > > There is something strange, item is not unused as it is at least used
> > > > in the rte_flow_error_set().
> > >
> > > A new issue introduced when adding GRE protocol check.
> > > If you finished this patchset review, I'll upload a new version to remove
> > > it.
> > >
> > > >
> > > > In the other series you are pushing, there is no new
> > > > RTE_FLOW_ITEM_GRE and in the current code there is also no
> > > > RTE_FLOW_ITEM_GRE.
> > > >
> > > > I don't see how this code can match the missing item, what am I missing?
> > >
> > > Are you looking for RTE_FLOW_ITEM_TYPE_GRE?
> >
> > Yes
>
> RTE_FLOW_ITEM_TYPE_GRE has been defined in rte_flow.h, please check.
Ok I've just missed it.
>
> >
> > > >
> > > > > +/**
> > > > > * Convert mark/flag action to Verbs specification.
> > > > > *
> > > > > * @param parser
> > > > > --
> > > > > 2.13.3
> > > >
> > > > Thanks,
> > > >
> > > > --
> > > > Nélio Laranjeiro
> > > > 6WIND
> >
> > --
> > Nélio Laranjeiro
> > 6WIND
--
Nélio Laranjeiro
6WIND
