From: "Min Hu (Connor)" <humin29@huawei.com>
To: <dev@dpdk.org>
Cc: <ferruh.yigit@intel.com>, <thomas@monjalon.net>,
<xiaoyun.li@intel.com>, <aman.deep.singh@intel.com>,
<yuying.zhang@intel.com>
Subject: [PATCH 2/2] app/testpmd: fix incorrect MTU verification
Date: Wed, 6 Apr 2022 16:45:37 +0800 [thread overview]
Message-ID: <20220406084537.16799-3-humin29@huawei.com> (raw)
In-Reply-To: <20220406084537.16799-1-humin29@huawei.com>
From: Huisong Li <lihuisong@huawei.com>
The macro RTE_ETHER_MIN_LEN isn't the minimum value of MTU. But testpmd
used it when execute 'port config mtu 0 xx' cmd. This patch fix it.
Fixes: 1bb4a528c41f ("ethdev: fix max Rx packet length")
Cc: stable@dpdk.org
Signed-off-by: Huisong Li <lihuisong@huawei.com>
Signed-off-by: Min Hu (Connor) <humin29@huawei.com>
---
app/test-pmd/cmdline.c | 4 ---
app/test-pmd/config.c | 55 ++++++++++++++++++++++++++++++++++++++++++
2 files changed, 55 insertions(+), 4 deletions(-)
diff --git a/app/test-pmd/cmdline.c b/app/test-pmd/cmdline.c
index 6ffea8e21a..91e4090582 100644
--- a/app/test-pmd/cmdline.c
+++ b/app/test-pmd/cmdline.c
@@ -2050,10 +2050,6 @@ cmd_config_mtu_parsed(void *parsed_result,
{
struct cmd_config_mtu_result *res = parsed_result;
- if (res->value < RTE_ETHER_MIN_LEN) {
- fprintf(stderr, "mtu cannot be less than %d\n", RTE_ETHER_MIN_LEN);
- return;
- }
port_mtu_set(res->port_id, res->value);
}
diff --git a/app/test-pmd/config.c b/app/test-pmd/config.c
index bd689f9f86..1b1e738f83 100644
--- a/app/test-pmd/config.c
+++ b/app/test-pmd/config.c
@@ -1254,6 +1254,57 @@ port_reg_set(portid_t port_id, uint32_t reg_off, uint32_t reg_v)
display_port_reg_value(port_id, reg_off, reg_v);
}
+static uint32_t
+eth_dev_get_overhead_len(uint32_t max_rx_pktlen, uint16_t max_mtu)
+{
+ uint32_t overhead_len;
+
+ if (max_mtu != UINT16_MAX && max_rx_pktlen > max_mtu)
+ overhead_len = max_rx_pktlen - max_mtu;
+ else
+ overhead_len = RTE_ETHER_HDR_LEN + RTE_ETHER_CRC_LEN;
+
+ return overhead_len;
+}
+
+static int
+eth_dev_validate_mtu(uint16_t port_id, uint16_t mtu)
+{
+ struct rte_eth_dev_info dev_info;
+ uint32_t overhead_len;
+ uint32_t frame_size;
+ int ret;
+
+ ret = rte_eth_dev_info_get(port_id, &dev_info);
+ if (ret != 0)
+ return ret;
+
+ if (mtu < dev_info.min_mtu) {
+ fprintf(stderr,
+ "MTU (%u) < device min MTU (%u) for port_id %u\n",
+ mtu, dev_info.min_mtu, port_id);
+ return -EINVAL;
+ }
+ if (mtu > dev_info.max_mtu) {
+ fprintf(stderr,
+ "MTU (%u) > device max MTU (%u) for port_id %u\n",
+ mtu, dev_info.max_mtu, port_id);
+ return -EINVAL;
+ }
+
+ overhead_len = eth_dev_get_overhead_len(dev_info.max_rx_pktlen,
+ dev_info.max_mtu);
+ frame_size = mtu + overhead_len;
+ if (frame_size > dev_info.max_rx_pktlen) {
+ fprintf(stderr,
+ "Frame size (%u) > device max frame size (%u) for port_id %u\n",
+ frame_size, dev_info.max_rx_pktlen, port_id);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
void
port_mtu_set(portid_t port_id, uint16_t mtu)
{
@@ -1263,6 +1314,10 @@ port_mtu_set(portid_t port_id, uint16_t mtu)
if (port_id_is_invalid(port_id, ENABLED_WARN))
return;
+ diag = eth_dev_validate_mtu(port_id, mtu);
+ if (diag != 0)
+ return;
+
if (port->need_reconfig == 0) {
diag = rte_eth_dev_set_mtu(port_id, mtu);
if (diag != 0) {
--
2.33.0
next prev parent reply other threads:[~2022-04-06 8:46 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-06 8:45 [PATCH 0/2] bugfix for testpmd Min Hu (Connor)
2022-04-06 8:45 ` [PATCH 1/2] app/testpmd: fix stats get when display fwd stats Min Hu (Connor)
2022-04-27 12:15 ` Singh, Aman Deep
2022-04-28 3:10 ` Min Hu (Connor)
2022-04-06 8:45 ` Min Hu (Connor) [this message]
2022-04-25 16:25 ` [PATCH 2/2] app/testpmd: fix incorrect MTU verification Singh, Aman Deep
2022-04-26 1:38 ` lihuisong (C)
2022-05-12 16:37 ` Ferruh Yigit
2022-04-25 6:52 ` [PATCH 0/2] bugfix for testpmd Min Hu (Connor)
2022-05-12 16:37 ` Ferruh Yigit
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20220406084537.16799-3-humin29@huawei.com \
--to=humin29@huawei.com \
--cc=aman.deep.singh@intel.com \
--cc=dev@dpdk.org \
--cc=ferruh.yigit@intel.com \
--cc=thomas@monjalon.net \
--cc=xiaoyun.li@intel.com \
--cc=yuying.zhang@intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).