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From: Jerin Jacob <jerin.jacob@caviumnetworks.com>
To: Wenzhuo Lu <wenzhuo.lu@intel.com>, Jingjing Wu <jingjing.wu@intel.com>,
Bernard Iremonger <bernard.iremonger@intel.com>,
John McNamara <john.mcnamara@intel.com>,
Marko Kovacevic <marko.kovacevic@intel.com>
Cc: dev@dpdk.org, shahafs@mellanox.com,
Jerin Jacob <jerin.jacob@caviumnetworks.com>
Date: Wed, 3 Oct 2018 00:54:50 +0530
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Subject: [dpdk-dev] [PATCH v2 3/4] app/testpmd: add outer UDP HW checksum
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Added outer-udp Tx HW checksum support for csum forward engine
if device supports DEV_TX_OFFLOAD_OUTER_UDP_CKSUM.
Signed-off-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
---
v2:
- Added outer-udp support for csum engine
---
app/test-pmd/cmdline.c | 24 ++++++++++++++++++---
app/test-pmd/csumonly.c | 13 +++++++++--
doc/guides/testpmd_app_ug/testpmd_funcs.rst | 8 +++++--
3 files changed, 38 insertions(+), 7 deletions(-)
diff --git a/app/test-pmd/cmdline.c b/app/test-pmd/cmdline.c
index 0c5399dc4..2fd007423 100644
--- a/app/test-pmd/cmdline.c
+++ b/app/test-pmd/cmdline.c
@@ -397,12 +397,13 @@ static void cmd_help_long_parsed(void *parsed_result,
" Disable hardware insertion of a VLAN header in"
" packets sent on a port.\n\n"
- "csum set (ip|udp|tcp|sctp|outer-ip) (hw|sw) (port_id)\n"
+ "csum set (ip|udp|tcp|sctp|outer-ip|outer-udp) (hw|sw) (port_id)\n"
" Select hardware or software calculation of the"
" checksum when transmitting a packet using the"
" csum forward engine.\n"
" ip|udp|tcp|sctp always concern the inner layer.\n"
" outer-ip concerns the outer IP layer in"
+ " outer-udp concerns the outer UDP layer in"
" case the packet is recognized as a tunnel packet by"
" the forward engine (vxlan, gre and ipip are supported)\n"
" Please check the NIC datasheet for HW limits.\n\n"
@@ -4177,6 +4178,8 @@ csum_show(int port_id)
(tx_offloads & DEV_TX_OFFLOAD_SCTP_CKSUM) ? "hw" : "sw");
printf("Outer-Ip checksum offload is %s\n",
(tx_offloads & DEV_TX_OFFLOAD_OUTER_IPV4_CKSUM) ? "hw" : "sw");
+ printf("Outer-Udp checksum offload is %s\n",
+ (tx_offloads & DEV_TX_OFFLOAD_OUTER_UDP_CKSUM) ? "hw" : "sw");
/* display warnings if configuration is not supported by the NIC */
rte_eth_dev_info_get(port_id, &dev_info);
@@ -4205,6 +4208,12 @@ csum_show(int port_id)
printf("Warning: hardware outer IP checksum enabled but not "
"supported by port %d\n", port_id);
}
+ if ((tx_offloads & DEV_TX_OFFLOAD_OUTER_UDP_CKSUM) &&
+ (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_OUTER_UDP_CKSUM)
+ == 0) {
+ printf("Warning: hardware outer UDP checksum enabled but not "
+ "supported by port %d\n", port_id);
+ }
}
static void
@@ -4273,6 +4282,15 @@ cmd_csum_parsed(void *parsed_result,
printf("Outer IP checksum offload is not "
"supported by port %u\n", res->port_id);
}
+ } else if (!strcmp(res->proto, "outer-udp")) {
+ if (hw == 0 || (dev_info.tx_offload_capa &
+ DEV_TX_OFFLOAD_OUTER_UDP_CKSUM)) {
+ csum_offloads |=
+ DEV_TX_OFFLOAD_OUTER_UDP_CKSUM;
+ } else {
+ printf("Outer UDP checksum offload is not "
+ "supported by port %u\n", res->port_id);
+ }
}
if (hw) {
@@ -4296,7 +4314,7 @@ cmdline_parse_token_string_t cmd_csum_mode =
mode, "set");
cmdline_parse_token_string_t cmd_csum_proto =
TOKEN_STRING_INITIALIZER(struct cmd_csum_result,
- proto, "ip#tcp#udp#sctp#outer-ip");
+ proto, "ip#tcp#udp#sctp#outer-ip#outer-udp");
cmdline_parse_token_string_t cmd_csum_hwsw =
TOKEN_STRING_INITIALIZER(struct cmd_csum_result,
hwsw, "hw#sw");
@@ -4307,7 +4325,7 @@ cmdline_parse_token_num_t cmd_csum_portid =
cmdline_parse_inst_t cmd_csum_set = {
.f = cmd_csum_parsed,
.data = NULL,
- .help_str = "csum set ip|tcp|udp|sctp|outer-ip hw|sw <port_id>: "
+ .help_str = "csum set ip|tcp|udp|sctp|outer-ip|outer-udp hw|sw <port_id>: "
"Enable/Disable hardware calculation of L3/L4 checksum when "
"using csum forward engine",
.tokens = {
diff --git a/app/test-pmd/csumonly.c b/app/test-pmd/csumonly.c
index 494829266..ea5b112d6 100644
--- a/app/test-pmd/csumonly.c
+++ b/app/test-pmd/csumonly.c
@@ -468,10 +468,15 @@ process_outer_cksums(void *outer_l3_hdr, struct testpmd_offload_info *info,
if (info->outer_l4_proto != IPPROTO_UDP)
return ol_flags;
+ /* Skip SW outer UDP checksum generation if HW supports it */
+ if (tx_offloads & DEV_TX_OFFLOAD_OUTER_UDP_CKSUM) {
+ ol_flags |= PKT_TX_OUTER_UDP_CKSUM;
+ return ol_flags;
+ }
+
udp_hdr = (struct udp_hdr *)((char *)outer_l3_hdr + info->outer_l3_len);
- /* outer UDP checksum is done in software as we have no hardware
- * supporting it today, and no API for it. In the other side, for
+ /* outer UDP checksum is done in software. In the other side, for
* UDP tunneling, like VXLAN or Geneve, outer UDP checksum can be
* set to zero.
*
@@ -826,6 +831,8 @@ pkt_burst_checksum_forward(struct fwd_stream *fs)
if (info.tunnel_tso_segsz ||
(tx_offloads &
DEV_TX_OFFLOAD_OUTER_IPV4_CKSUM) ||
+ (tx_offloads &
+ DEV_TX_OFFLOAD_OUTER_UDP_CKSUM) ||
(tx_ol_flags & PKT_TX_OUTER_IPV6)) {
m->outer_l2_len = info.outer_l2_len;
m->outer_l3_len = info.outer_l3_len;
@@ -898,6 +905,8 @@ pkt_burst_checksum_forward(struct fwd_stream *fs)
if (info.is_tunnel == 1) {
if ((tx_offloads &
DEV_TX_OFFLOAD_OUTER_IPV4_CKSUM) ||
+ (tx_offloads &
+ DEV_TX_OFFLOAD_OUTER_UDP_CKSUM) ||
(tx_ol_flags & PKT_TX_OUTER_IPV6))
printf("tx: m->outer_l2_len=%d "
"m->outer_l3_len=%d\n",
diff --git a/doc/guides/testpmd_app_ug/testpmd_funcs.rst b/doc/guides/testpmd_app_ug/testpmd_funcs.rst
index 3a73000a6..cfcabf6f0 100644
--- a/doc/guides/testpmd_app_ug/testpmd_funcs.rst
+++ b/doc/guides/testpmd_app_ug/testpmd_funcs.rst
@@ -857,7 +857,7 @@ csum set
Select hardware or software calculation of the checksum when
transmitting a packet using the ``csum`` forwarding engine::
- testpmd> csum set (ip|udp|tcp|sctp|outer-ip) (hw|sw) (port_id)
+ testpmd> csum set (ip|udp|tcp|sctp|outer-ip|outer-udp) (hw|sw) (port_id)
Where:
@@ -867,6 +867,10 @@ Where:
as a tunnel packet by the forwarding engine (vxlan, gre and ipip are
supported). See also the ``csum parse-tunnel`` command.
+* ``outer-udp`` relates to the outer UDP layer in the case where the packet is recognized
+ as a tunnel packet by the forwarding engine (vxlan, vxlan-gpe are
+ supported). See also the ``csum parse-tunnel`` command.
+
.. note::
Check the NIC Datasheet for hardware limits.
@@ -940,7 +944,7 @@ Consider a packet in packet like the following::
* If parse-tunnel is enabled, the ``ip|udp|tcp|sctp`` parameters of ``csum set``
command relate to the inner headers (here ``ipv4_in`` and ``tcp_in``), and the
- ``outer-ip parameter`` relates to the outer headers (here ``ipv4_out``).
+ ``outer-ip|outer-udp`` parameter relates to the outer headers (here ``ipv4_out`` and ``udp_out``).
* If parse-tunnel is disabled, the ``ip|udp|tcp|sctp`` parameters of ``csum set``
command relate to the outer headers, here ``ipv4_out`` and ``udp_out``.
--
2.19.0