From: Julian Wiedmann <jwi@linux.ibm.com>
Subject: s390/diag: add diag26c support for VNIC info
Patch-mainline: v4.16-rc1
Git-commit: f22237f61d2f19760b3799ee798d7dc30cdc0785
References: FATE#326350, LTC#169511, bsc#1113509
Summary: qeth: performance improvements
Description: This adds recent functional and performance improvements for the
qeth network driver.
Primarily this brings Scatter-Gather support for HiperSockets,
reduced CPU consumption in the L3 IPv4 transmit path for OSA,
improved Promiscuous Mode performance due to IFF_UNICAST_FLT,
support for Scatter-Gather on z/VM virtual NICs, and
support for delayed GRO flushing.
For sanity & stability reasons, this effectively constitutes a
backport of the qeth device driver from 4.19 mainline.
Upstream-Description:
s390/diag: add diag26c support for VNIC info
With subcode 0x24, diag26c returns all sorts of VNIC-related information.
Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com>
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
arch/s390/include/asm/diag.h | 44 ++++++++++++++++++++++++++++++++++++++++++-
1 file changed, 43 insertions(+), 1 deletion(-)
--- a/arch/s390/include/asm/diag.h
+++ b/arch/s390/include/asm/diag.h
@@ -228,13 +228,55 @@ struct diag204_x_phys_block {
} __packed;
enum diag26c_sc {
+ DIAG26C_PORT_VNIC = 0x00000024,
DIAG26C_MAC_SERVICES = 0x00000030
};
enum diag26c_version {
- DIAG26C_VERSION2 = 0x00000002 /* z/VM 5.4.0 */
+ DIAG26C_VERSION2 = 0x00000002, /* z/VM 5.4.0 */
+ DIAG26C_VERSION6_VM65918 = 0x00020006 /* z/VM 6.4.0 + VM65918 */
};
+#define DIAG26C_VNIC_INFO 0x0002
+struct diag26c_vnic_req {
+ u32 resp_buf_len;
+ u32 resp_version;
+ u16 req_format;
+ u16 vlan_id;
+ u64 sys_name;
+ u8 res[2];
+ u16 devno;
+} __packed __aligned(8);
+
+#define VNIC_INFO_PROT_L3 1
+#define VNIC_INFO_PROT_L2 2
+/* Note: this is the bare minimum, use it for uninitialized VNICs only. */
+struct diag26c_vnic_resp {
+ u32 version;
+ u32 entry_cnt;
+ /* VNIC info: */
+ u32 next_entry;
+ u64 owner;
+ u16 devno;
+ u8 status;
+ u8 type;
+ u64 lan_owner;
+ u64 lan_name;
+ u64 port_name;
+ u8 port_type;
+ u8 ext_status:6;
+ u8 protocol:2;
+ u16 base_devno;
+ u32 port_num;
+ u32 ifindex;
+ u32 maxinfo;
+ u32 dev_count;
+ /* 3x device info: */
+ u8 dev_info1[28];
+ u8 dev_info2[28];
+ u8 dev_info3[28];
+} __packed __aligned(8);
+
#define DIAG26C_GET_MAC 0x0000
struct diag26c_mac_req {
u32 resp_buf_len;