From: Noa Osherovich <noaos@xxxxxxxxxxxx>
Allow the device to report raw packet capabilities back to user,
introducing the cvlan stripping offload capability.
Two existing capabilities, scatter FCS and IP CSUM, were added to
this field for a better user experience by exposing the raw packet
caps from one location.
This patch includes:
- Reading from the uverbs layer and report back to an application.
- Extending ibv_devinfo to print that information.
Signed-off-by: Noa Osherovich <noaos@xxxxxxxxxxxx>
Reviewed-by: Maor Gottlieb <maorg@xxxxxxxxxxxx>
Reviewed-by: Yishai Hadas <yishaih@xxxxxxxxxxxx>
---
libibverbs/cmd.c | 8 ++++++++
libibverbs/examples/devinfo.c | 14 ++++++++++++++
libibverbs/kern-abi.h | 2 +-
libibverbs/verbs.h | 7 +++++++
4 files changed, 30 insertions(+), 1 deletion(-)
diff --git a/libibverbs/cmd.c b/libibverbs/cmd.c
index 9b49da0..4aebbb5 100644
--- a/libibverbs/cmd.c
+++ b/libibverbs/cmd.c
@@ -230,6 +230,14 @@ int ibv_cmd_query_device_ex(struct ibv_context *context,
attr->max_wq_type_rq = resp->max_wq_type_rq;
}
+ if (attr_size >= offsetof(struct ibv_device_attr_ex, raw_packet_caps) +
+ sizeof(attr->raw_packet_caps)) {
+ if (resp->response_length >=
+ offsetof(struct ibv_query_device_resp_ex, raw_packet_caps) +
+ sizeof(resp->raw_packet_caps))
+ attr->raw_packet_caps = resp->raw_packet_caps;
+ }
+
return 0;
}
diff --git a/libibverbs/examples/devinfo.c b/libibverbs/examples/devinfo.c
index d88562f..42222c4 100644
--- a/libibverbs/examples/devinfo.c
+++ b/libibverbs/examples/devinfo.c
@@ -401,6 +401,17 @@ static void print_packet_pacing_caps(const struct ibv_packet_pacing_caps *caps)
}
}
+static void print_raw_packet_caps(uint32_t raw_packet_caps)
+{
+ printf("\traw packet caps:\n");
+ if (raw_packet_caps & IBV_RAW_PACKET_CAP_CVLAN_STRIPPING)
+ printf("\t\t\t\t\tC-VLAN stripping offload\n");
+ if (raw_packet_caps & IBV_RAW_PACKET_CAP_SCATTER_FCS)
+ printf("\t\t\t\t\tScatter FCS offload\n");
+ if (raw_packet_caps & IBV_RAW_PACKET_CAP_IP_CSUM)
+ printf("\t\t\t\t\tIP csum offload\n");
+}
+
static int print_hca_cap(struct ibv_device *ib_dev, uint8_t ib_port)
{
struct ibv_context *ctx;
@@ -499,6 +510,9 @@ static int print_hca_cap(struct ibv_device *ib_dev, uint8_t ib_port)
else
printf("\tcore clock not supported\n");
+ if (device_attr.raw_packet_caps)
+ print_raw_packet_caps(device_attr.raw_packet_caps);
+
printf("\tdevice_cap_flags_ex:\t\t0x%" PRIX64 "\n", device_attr.device_cap_flags_ex);
print_device_cap_flags_ex(device_attr.device_cap_flags_ex);
print_tso_caps(&device_attr.tso_caps);
diff --git a/libibverbs/kern-abi.h b/libibverbs/kern-abi.h
index 210dd3e..3958f0c 100644
--- a/libibverbs/kern-abi.h
+++ b/libibverbs/kern-abi.h
@@ -290,7 +290,7 @@ struct ibv_query_device_resp_ex {
__u64 device_cap_flags_ex;
struct ibv_rss_caps_resp rss_caps;
__u32 max_wq_type_rq;
- __u32 reserved;
+ __u32 raw_packet_caps;
};
struct ibv_query_port {
diff --git a/libibverbs/verbs.h b/libibverbs/verbs.h
index 25f4ede..604b09e 100644
--- a/libibverbs/verbs.h
+++ b/libibverbs/verbs.h
@@ -252,6 +252,12 @@ struct ibv_packet_pacing_caps {
uint32_t supported_qpts;
};
+enum ibv_raw_packet_caps {
+ IBV_RAW_PACKET_CAP_CVLAN_STRIPPING = 1 << 0,
+ IBV_RAW_PACKET_CAP_SCATTER_FCS = 1 << 1,
+ IBV_RAW_PACKET_CAP_IP_CSUM = 1 << 2,
+};
+
struct ibv_device_attr_ex {
struct ibv_device_attr orig_attr;
uint32_t comp_mask;
@@ -263,6 +269,7 @@ struct ibv_device_attr_ex {
struct ibv_rss_caps rss_caps;
uint32_t max_wq_type_rq;
struct ibv_packet_pacing_caps packet_pacing_caps;
+ uint32_t raw_packet_caps; /* Use ibv_raw_packet_caps */
};
enum ibv_mtu {
--
1.8.3.1
--
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