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IB/core: Introduce inner flow steering

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For a tunneled packet which contains external and internal headers,
we refer to the external headers as "outer fields" and the internal
headers as "inner fields".

Example of a tunneled packet:

{ L2 | L3 | L4 | tunnel header | L2 | L3 | l4 | data }
  |     |    |         |         |    |    |
{       outer fields           }{ inner fields }

This patch introduces a new flag for flow steering rules
- IB_FLOW_SPEC_INNER - which specifies that the rule applies
to the inner fields, rather than to the outer fields of the packet.

Signed-off-by: Moses Reuben <mosesr@mellanox.com>
Reviewed-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Moses Reuben 2016-11-14 19:04:51 +02:00 committed by Doug Ledford
parent ffb30d8f10
commit fbf46860b1
2 changed files with 12 additions and 9 deletions
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4
drivers/infiniband/core/uverbs_cmd.c
View File

@ -3124,8 +3124,10 @@ static int kern_spec_to_ib_spec(struct ib_uverbs_flow_spec *kern_spec,
kern_spec_val = (void *)kern_spec +
sizeof(struct ib_uverbs_flow_spec_hdr);
kern_spec_mask = kern_spec_val + kern_filter_sz;
if (ib_spec->type == (IB_FLOW_SPEC_INNER | IB_FLOW_SPEC_VXLAN_TUNNEL))
return -EINVAL;
switch (ib_spec->type) {
switch (ib_spec->type & ~IB_FLOW_SPEC_INNER) {
case IB_FLOW_SPEC_ETH:
ib_filter_sz = offsetof(struct ib_flow_eth_filter, real_sz);
actual_filter_sz = spec_filter_size(kern_spec_mask,

17
include/rdma/ib_verbs.h
View File

@ -1601,9 +1601,10 @@ enum ib_flow_spec_type {
IB_FLOW_SPEC_TCP = 0x40,
IB_FLOW_SPEC_UDP = 0x41,
IB_FLOW_SPEC_VXLAN_TUNNEL = 0x50,
IB_FLOW_SPEC_INNER = 0x100,
};
#define IB_FLOW_SPEC_LAYER_MASK 0xF0
#define IB_FLOW_SPEC_SUPPORT_LAYERS 4
#define IB_FLOW_SPEC_SUPPORT_LAYERS 8
/* Flow steering rule priority is set according to it's domain.
* Lower domain value means higher priority.
@ -1631,7 +1632,7 @@ struct ib_flow_eth_filter {
};
struct ib_flow_spec_eth {
enum ib_flow_spec_type type;
u32 type;
u16 size;
struct ib_flow_eth_filter val;
struct ib_flow_eth_filter mask;
@ -1645,7 +1646,7 @@ struct ib_flow_ib_filter {
};
struct ib_flow_spec_ib {
enum ib_flow_spec_type type;
u32 type;
u16 size;
struct ib_flow_ib_filter val;
struct ib_flow_ib_filter mask;
@ -1670,7 +1671,7 @@ struct ib_flow_ipv4_filter {
};
struct ib_flow_spec_ipv4 {
enum ib_flow_spec_type type;
u32 type;
u16 size;
struct ib_flow_ipv4_filter val;
struct ib_flow_ipv4_filter mask;
@ -1688,7 +1689,7 @@ struct ib_flow_ipv6_filter {
};
struct ib_flow_spec_ipv6 {
enum ib_flow_spec_type type;
u32 type;
u16 size;
struct ib_flow_ipv6_filter val;
struct ib_flow_ipv6_filter mask;
@ -1702,7 +1703,7 @@ struct ib_flow_tcp_udp_filter {
};
struct ib_flow_spec_tcp_udp {
enum ib_flow_spec_type type;
u32 type;
u16 size;
struct ib_flow_tcp_udp_filter val;
struct ib_flow_tcp_udp_filter mask;
@ -1717,7 +1718,7 @@ struct ib_flow_tunnel_filter {
* the tunnel_id from val has the vni value
*/
struct ib_flow_spec_tunnel {
enum ib_flow_spec_type type;
u32 type;
u16 size;
struct ib_flow_tunnel_filter val;
struct ib_flow_tunnel_filter mask;
@ -1725,7 +1726,7 @@ struct ib_flow_spec_tunnel {
union ib_flow_spec {
struct {
enum ib_flow_spec_type type;
u32 type;
u16 size;
};
struct ib_flow_spec_eth eth;