From: bugzilla@dpdk.org
To: dev@dpdk.org
Subject: [DPDK/ethdev Bug 1934] Pollara 400 AI NIC does not have code for 400G
Date: Fri, 10 Apr 2026 02:36:34 +0000 [thread overview]
Message-ID: <bug-1934-3@http.bugs.dpdk.org/> (raw)
http://bugs.dpdk.org/show_bug.cgi?id=1934
Bug ID: 1934
Summary: Pollara 400 AI NIC does not have code for 400G
Product: DPDK
Version: 26.03
Hardware: All
OS: All
Status: UNCONFIRMED
Severity: critical
Priority: Normal
Component: ethdev
Assignee: dev@dpdk.org
Reporter: vipin.varghese@amd.com
Target Milestone: ---
DPDK version: 26.03
PMD: driver/net/ionic
problem: as per dpdk patch
https://patchwork.dpdk.org/project/dpdk/patch/20251120183936.8699-1-andrew.boyer@amd.com/
Pollaro 400G is supported
code base:
- file: ionic_if.h
```
/**
* enum ionic_xcvr_pid - Supported link modes
*/
enum ionic_xcvr_pid {
IONIC_XCVR_PID_UNKNOWN = 0,
/* CU */
IONIC_XCVR_PID_QSFP_100G_CR4 = 1,
IONIC_XCVR_PID_QSFP_40GBASE_CR4 = 2,
IONIC_XCVR_PID_SFP_25GBASE_CR_S = 3,
IONIC_XCVR_PID_SFP_25GBASE_CR_L = 4,
IONIC_XCVR_PID_SFP_25GBASE_CR_N = 5,
/* Fiber */
IONIC_XCVR_PID_QSFP_100G_AOC = 50,
IONIC_XCVR_PID_QSFP_100G_ACC = 51,
IONIC_XCVR_PID_QSFP_100G_SR4 = 52,
IONIC_XCVR_PID_QSFP_100G_LR4 = 53,
IONIC_XCVR_PID_QSFP_100G_ER4 = 54,
IONIC_XCVR_PID_QSFP_40GBASE_ER4 = 55,
IONIC_XCVR_PID_QSFP_40GBASE_SR4 = 56,
IONIC_XCVR_PID_QSFP_40GBASE_LR4 = 57,
IONIC_XCVR_PID_QSFP_40GBASE_AOC = 58,
IONIC_XCVR_PID_SFP_25GBASE_SR = 59,
IONIC_XCVR_PID_SFP_25GBASE_LR = 60,
IONIC_XCVR_PID_SFP_25GBASE_ER = 61,
IONIC_XCVR_PID_SFP_25GBASE_AOC = 62,
IONIC_XCVR_PID_SFP_10GBASE_SR = 63,
IONIC_XCVR_PID_SFP_10GBASE_LR = 64,
IONIC_XCVR_PID_SFP_10GBASE_LRM = 65,
IONIC_XCVR_PID_SFP_10GBASE_ER = 66,
IONIC_XCVR_PID_SFP_10GBASE_AOC = 67,
IONIC_XCVR_PID_SFP_10GBASE_CU = 68,
IONIC_XCVR_PID_QSFP_100G_CWDM4 = 69,
IONIC_XCVR_PID_QSFP_100G_PSM4 = 70,
IONIC_XCVR_PID_SFP_25GBASE_ACC = 71,
};
```
- file: ionic_ethdev.c
```
dev_info->speed_capa =
RTE_ETH_LINK_SPEED_10G |
RTE_ETH_LINK_SPEED_25G |
RTE_ETH_LINK_SPEED_40G |
RTE_ETH_LINK_SPEED_50G |
RTE_ETH_LINK_SPEED_100G;
} else {
/* Interface is up */
link.link_status = RTE_ETH_LINK_UP;
link.link_duplex = RTE_ETH_LINK_FULL_DUPLEX;
switch (adapter->link_speed) {
case 1000:
link.link_speed = RTE_ETH_SPEED_NUM_1G;
break;
case 10000:
link.link_speed = RTE_ETH_SPEED_NUM_10G;
break;
case 25000:
link.link_speed = RTE_ETH_SPEED_NUM_25G;
break;
case 40000:
link.link_speed = RTE_ETH_SPEED_NUM_40G;
break;
case 50000:
link.link_speed = RTE_ETH_SPEED_NUM_50G;
break;
case 100000:
link.link_speed = RTE_ETH_SPEED_NUM_100G;
break;
case 200000:
link.link_speed = RTE_ETH_SPEED_NUM_200G;
break;
default:
link.link_speed = RTE_ETH_SPEED_NUM_NONE;
break;
}
}
dev_info->speed_capa =
RTE_ETH_LINK_SPEED_10G |
RTE_ETH_LINK_SPEED_25G |
RTE_ETH_LINK_SPEED_40G |
RTE_ETH_LINK_SPEED_50G |
RTE_ETH_LINK_SPEED_100G;
static inline uint32_t
ionic_parse_link_speeds(uint16_t link_speeds)
{
if (link_speeds & RTE_ETH_LINK_SPEED_100G)
return 100000;
else if (link_speeds & RTE_ETH_LINK_SPEED_50G)
return 50000;
else if (link_speeds & RTE_ETH_LINK_SPEED_40G)
return 40000;
else if (link_speeds & RTE_ETH_LINK_SPEED_25G)
return 25000;
else if (link_speeds & RTE_ETH_LINK_SPEED_10G)
return 10000;
else
return 0;
}
```
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