From: Slava Shwartsman <slavash@xxxxxxxxxxxx>
This flow steering specification identifies a drop flow to the
hardware.
If user creates a flow only with the drop specification, then all the
packets that hit this flow will be dropped, otherwise the hardware will
drop only the packets that match the other L2/L3/L4 specifications.
Signed-off-by: Slava Shwartsman <slavash@xxxxxxxxxxxx>
Reviewed-by: Maor Gottlieb <maorg@xxxxxxxxxxxx>
Reviewed-by: Yishai Hadas <yishaih@xxxxxxxxxxxx>
---
This is the complementary user space part of the kernel code that was merged
into 4.12.
libibverbs/cmd.c | 3 +++
libibverbs/kern-abi.h | 7 +++++++
libibverbs/man/ibv_create_flow.3 | 1 +
libibverbs/verbs.h | 9 ++++++++-
4 files changed, 19 insertions(+), 1 deletion(-)
diff --git a/libibverbs/cmd.c b/libibverbs/cmd.c
index 3a5aa4e..7a266ee 100644
--- a/libibverbs/cmd.c
+++ b/libibverbs/cmd.c
@@ -1823,6 +1823,9 @@ static int ib_spec_to_kern_spec(struct ibv_flow_spec *ib_spec,
sizeof(struct ibv_kern_spec_action_tag);
kern_spec->flow_tag.tag_id = ib_spec->flow_tag.tag_id;
break;
+ case IBV_FLOW_SPEC_ACTION_DROP:
+ kern_spec->drop.size = sizeof(struct ibv_kern_spec_action_drop);
+ break;
default:
return EINVAL;
}
diff --git a/libibverbs/kern-abi.h b/libibverbs/kern-abi.h
index 448b2e8..8d42faf 100644
--- a/libibverbs/kern-abi.h
+++ b/libibverbs/kern-abi.h
@@ -938,6 +938,12 @@ struct ibv_kern_spec_tunnel {
struct ibv_kern_tunnel_filter mask;
};
+struct ibv_kern_spec_action_drop {
+ __u32 type;
+ __u16 size;
+ __u16 reserved;
+};
+
struct ibv_kern_spec {
union {
struct {
@@ -952,6 +958,7 @@ struct ibv_kern_spec {
struct ibv_kern_spec_ipv6 ipv6;
struct ibv_kern_spec_tunnel tunnel;
struct ibv_kern_spec_action_tag flow_tag;
+ struct ibv_kern_spec_action_drop drop;
};
};
diff --git a/libibverbs/man/ibv_create_flow.3 b/libibverbs/man/ibv_create_flow.3
index 32d47ad..48bbb14 100644
--- a/libibverbs/man/ibv_create_flow.3
+++ b/libibverbs/man/ibv_create_flow.3
@@ -69,6 +69,7 @@ IBV_FLOW_SPEC_UDP = 0x41, /* Flow specification of UDP h
IBV_FLOW_SPEC_VXLAN_TUNNEL = 0x50, /* Flow specification of VXLAN header */
IBV_FLOW_SPEC_INNER = 0x100, /* Flag making L2/L3/L4 specifications to be applied on the inner header */
IBV_FLOW_SPEC_ACTION_TAG = 0x1000, /* Action tagging matched packet */
+IBV_FLOW_SPEC_ACTION_DROP = 0x1001, /* Action dropping matched packet */
.in -8
};
.br
diff --git a/libibverbs/verbs.h b/libibverbs/verbs.h
index b27dfd1..4f0765e 100644
--- a/libibverbs/verbs.h
+++ b/libibverbs/verbs.h
@@ -1233,7 +1233,8 @@ enum ibv_flow_spec_type {
IBV_FLOW_SPEC_UDP = 0x41,
IBV_FLOW_SPEC_VXLAN_TUNNEL = 0x50,
IBV_FLOW_SPEC_INNER = 0x100,
- IBV_FLOW_SPEC_ACTION_TAG = 0x1000
+ IBV_FLOW_SPEC_ACTION_TAG = 0x1000,
+ IBV_FLOW_SPEC_ACTION_DROP = 0x1001,
};
struct ibv_flow_eth_filter {
@@ -1326,6 +1327,11 @@ struct ibv_flow_spec_action_tag {
uint32_t tag_id;
};
+struct ibv_flow_spec_action_drop {
+ enum ibv_flow_spec_type type;
+ uint16_t size;
+};
+
struct ibv_flow_spec {
union {
struct {
@@ -1339,6 +1345,7 @@ struct ibv_flow_spec {
struct ibv_flow_spec_ipv6 ipv6;
struct ibv_flow_spec_tunnel tunnel;
struct ibv_flow_spec_action_tag flow_tag;
+ struct ibv_flow_spec_action_drop drop;
};
};
--
1.8.3.1
--
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