IB/core: Introduce inner flow steering
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>
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@ -3124,8 +3124,10 @@ static int kern_spec_to_ib_spec(struct ib_uverbs_flow_spec *kern_spec,
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kern_spec_val = (void *)kern_spec +
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sizeof(struct ib_uverbs_flow_spec_hdr);
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kern_spec_mask = kern_spec_val + kern_filter_sz;
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if (ib_spec->type == (IB_FLOW_SPEC_INNER | IB_FLOW_SPEC_VXLAN_TUNNEL))
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return -EINVAL;
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switch (ib_spec->type) {
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switch (ib_spec->type & ~IB_FLOW_SPEC_INNER) {
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case IB_FLOW_SPEC_ETH:
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ib_filter_sz = offsetof(struct ib_flow_eth_filter, real_sz);
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actual_filter_sz = spec_filter_size(kern_spec_mask,
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@ -1601,9 +1601,10 @@ enum ib_flow_spec_type {
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IB_FLOW_SPEC_TCP = 0x40,
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IB_FLOW_SPEC_UDP = 0x41,
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IB_FLOW_SPEC_VXLAN_TUNNEL = 0x50,
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IB_FLOW_SPEC_INNER = 0x100,
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};
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#define IB_FLOW_SPEC_LAYER_MASK 0xF0
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#define IB_FLOW_SPEC_SUPPORT_LAYERS 4
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#define IB_FLOW_SPEC_SUPPORT_LAYERS 8
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/* Flow steering rule priority is set according to it's domain.
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* Lower domain value means higher priority.
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@ -1631,7 +1632,7 @@ struct ib_flow_eth_filter {
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};
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struct ib_flow_spec_eth {
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enum ib_flow_spec_type type;
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u32 type;
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u16 size;
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struct ib_flow_eth_filter val;
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struct ib_flow_eth_filter mask;
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@ -1645,7 +1646,7 @@ struct ib_flow_ib_filter {
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};
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struct ib_flow_spec_ib {
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enum ib_flow_spec_type type;
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u32 type;
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u16 size;
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struct ib_flow_ib_filter val;
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struct ib_flow_ib_filter mask;
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@ -1670,7 +1671,7 @@ struct ib_flow_ipv4_filter {
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};
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struct ib_flow_spec_ipv4 {
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enum ib_flow_spec_type type;
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u32 type;
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u16 size;
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struct ib_flow_ipv4_filter val;
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struct ib_flow_ipv4_filter mask;
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@ -1688,7 +1689,7 @@ struct ib_flow_ipv6_filter {
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};
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struct ib_flow_spec_ipv6 {
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enum ib_flow_spec_type type;
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u32 type;
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u16 size;
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struct ib_flow_ipv6_filter val;
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struct ib_flow_ipv6_filter mask;
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@ -1702,7 +1703,7 @@ struct ib_flow_tcp_udp_filter {
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};
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struct ib_flow_spec_tcp_udp {
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enum ib_flow_spec_type type;
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u32 type;
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u16 size;
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struct ib_flow_tcp_udp_filter val;
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struct ib_flow_tcp_udp_filter mask;
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@ -1717,7 +1718,7 @@ struct ib_flow_tunnel_filter {
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* the tunnel_id from val has the vni value
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*/
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struct ib_flow_spec_tunnel {
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enum ib_flow_spec_type type;
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u32 type;
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u16 size;
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struct ib_flow_tunnel_filter val;
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struct ib_flow_tunnel_filter mask;
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@ -1725,7 +1726,7 @@ struct ib_flow_spec_tunnel {
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union ib_flow_spec {
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struct {
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enum ib_flow_spec_type type;
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u32 type;
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u16 size;
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};
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struct ib_flow_spec_eth eth;
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