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hyperv/kvp: Don't mix message status codes and function return values.

Browse Source 
While I'm here, move message status codes to hv_utilreg.h, since they
will be used by the upcoming VSS stuffs.

Submitted by:	Hongjiang Zhang <honzhan microsoft com>
MFC after:	1 week
Sponsored by:	Microsoft
Differential Revision:	https://reviews.freebsd.org/D8391
This commit is contained in:
Sepherosa Ziehau 2016-11-02 07:18:27 +00:00
parent 56e6c4251c
commit 30c90f019f
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=308201
4 changed files with 71 additions and 69 deletions
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68
contrib/hyperv/tools/hv_kvp_daemon.c
View File

@ -52,9 +52,10 @@
#include <string.h>
#include <syslog.h>
#include <unistd.h>
#include <assert.h>
#include "hv_kvp.h"
#include "hv_utilreg.h"
typedef uint8_t __u8;
typedef uint16_t __u16;
typedef uint32_t __u32;
@ -684,18 +685,16 @@ kvp_get_ipconfig_info(char *if_name, struct hv_kvp_ipaddr_value *buffer)
*/
kvp_process_ipconfig_file(cmd, (char *)buffer->gate_way,
(MAX_GATEWAY_SIZE * 2), INET_ADDRSTRLEN, 0);
/*
* Retrieve the IPV6 address of default gateway.
*/
snprintf(cmd, sizeof(cmd), "netstat -rn inet6 | grep %s | awk '/default/ {print $2 }", if_name);
snprintf(cmd, sizeof(cmd), "netstat -rn inet6 | grep %s | awk '/default/ {print $2 }'", if_name);
/*
* Execute the command to gather gateway IPV6 info.
*/
kvp_process_ipconfig_file(cmd, (char *)buffer->gate_way,
(MAX_GATEWAY_SIZE * 2), INET6_ADDRSTRLEN, 1);
/*
* we just invoke an external script to get the DNS info.
*
@ -782,11 +781,11 @@ kvp_process_ip_address(void *addrp,
}
if ((length - *offset) < addr_length + 1) {
return (HV_KVP_E_FAIL);
return (EINVAL);
}
if (str == NULL) {
strlcpy(buffer, "inet_ntop failed\n", length);
return (HV_KVP_E_FAIL);
return (errno);
}
if (*offset == 0) {
strlcpy(buffer, tmp, length);
@ -832,7 +831,7 @@ kvp_get_ip_info(int family, char *if_name, int op,
if (getifaddrs(&ifap)) {
strlcpy(buffer, "getifaddrs failed\n", buffer_length);
return (HV_KVP_E_FAIL);
return (errno);
}
curp = ifap;
@ -924,7 +923,6 @@ kvp_get_ip_info(int family, char *if_name, int op,
/*
* Collect other ip configuration info.
*/
kvp_get_ipconfig_info(if_name, ip_buffer);
}
@ -954,7 +952,7 @@ kvp_write_file(FILE *f, const char *s1, const char *s2, const char *s3)
ret = fprintf(f, "%s%s%s%s\n", s1, s2, "=", s3);
if (ret < 0) {
return (HV_KVP_E_FAIL);
return (EIO);
}
return (0);
@ -979,7 +977,7 @@ kvp_set_ip_info(char *if_name, struct hv_kvp_ipaddr_value *new_val)
if (file == NULL) {
KVP_LOG(LOG_ERR, "FreeBSD Failed to open config file\n");
return (HV_KVP_E_FAIL);
return (errno);
}
/*
@ -988,7 +986,7 @@ kvp_set_ip_info(char *if_name, struct hv_kvp_ipaddr_value *new_val)
mac_addr = kvp_if_name_to_mac(if_name);
if (mac_addr == NULL) {
error = HV_KVP_E_FAIL;
error = EINVAL;
goto kvp_set_ip_info_error;
}
/* MAC Address */
@ -1091,28 +1089,30 @@ kvp_op_getipinfo(struct hv_kvp_msg *op_msg, void *data __unused)
{
struct hv_kvp_ipaddr_value *ip_val;
char *if_name;
int error = 0;
assert(op_msg != NULL);
KVP_LOG(LOG_DEBUG, "In kvp_op_getipinfo.\n");
ip_val = &op_msg->body.kvp_ip_val;
op_msg->hdr.error = HV_KVP_S_OK;
op_msg->hdr.error = HV_S_OK;
if_name = kvp_mac_to_if_name((char *)ip_val->adapter_id);
if (if_name == NULL) {
/* No interface found with the mac address. */
op_msg->hdr.error = HV_KVP_E_FAIL;
op_msg->hdr.error = HV_E_FAIL;
goto kvp_op_getipinfo_done;
}
op_msg->hdr.error = kvp_get_ip_info(0, if_name,
error = kvp_get_ip_info(0, if_name,
HV_KVP_OP_GET_IP_INFO, ip_val, (MAX_IP_ADDR_SIZE * 2));
if (error)
op_msg->hdr.error = HV_E_FAIL;
free(if_name);
kvp_op_getipinfo_done:
return(op_msg->hdr.error);
return (error);
}
@ -1121,25 +1121,27 @@ kvp_op_setipinfo(struct hv_kvp_msg *op_msg, void *data __unused)
{
struct hv_kvp_ipaddr_value *ip_val;
char *if_name;
int error = 0;
assert(op_msg != NULL);
KVP_LOG(LOG_DEBUG, "In kvp_op_setipinfo.\n");
ip_val = &op_msg->body.kvp_ip_val;
op_msg->hdr.error = HV_KVP_S_OK;
op_msg->hdr.error = HV_S_OK;
if_name = (char *)ip_val->adapter_id;
if (if_name == NULL) {
/* No adapter provided. */
op_msg->hdr.error = HV_KVP_GUID_NOTFOUND;
op_msg->hdr.error = HV_GUID_NOTFOUND;
goto kvp_op_setipinfo_done;
}
op_msg->hdr.error = kvp_set_ip_info(if_name, ip_val);
error = kvp_set_ip_info(if_name, ip_val);
if (error)
op_msg->hdr.error = HV_E_FAIL;
kvp_op_setipinfo_done:
return(op_msg->hdr.error);
return (error);
}
@ -1154,7 +1156,7 @@ kvp_op_setgetdel(struct hv_kvp_msg *op_msg, void *data)
assert(op_hdlr != NULL);
op_pool = op_msg->hdr.kvp_hdr.pool;
op_msg->hdr.error = HV_KVP_S_OK;
op_msg->hdr.error = HV_S_OK;
switch(op_hdlr->kvp_op_key) {
case HV_KVP_OP_SET:
@ -1198,8 +1200,7 @@ kvp_op_setgetdel(struct hv_kvp_msg *op_msg, void *data)
}
if (error != 0)
op_msg->hdr.error = HV_KVP_S_CONT;
op_msg->hdr.error = HV_S_CONT;
return(error);
}
@ -1216,7 +1217,7 @@ kvp_op_enumerate(struct hv_kvp_msg *op_msg, void *data __unused)
op = op_msg->hdr.kvp_hdr.operation;
op_pool = op_msg->hdr.kvp_hdr.pool;
op_msg->hdr.error = HV_KVP_S_OK;
op_msg->hdr.error = HV_S_OK;
/*
* If the pool is not HV_KVP_POOL_AUTO, read from the appropriate
@ -1229,7 +1230,7 @@ kvp_op_enumerate(struct hv_kvp_msg *op_msg, void *data __unused)
HV_KVP_EXCHANGE_MAX_KEY_SIZE,
op_msg->body.kvp_enum_data.data.msg_value.value,
HV_KVP_EXCHANGE_MAX_VALUE_SIZE)) {
op_msg->hdr.error = HV_KVP_S_CONT;
op_msg->hdr.error = HV_S_CONT;
error = -1;
}
goto kvp_op_enumerate_done;
@ -1298,12 +1299,14 @@ kvp_op_enumerate(struct hv_kvp_msg *op_msg, void *data __unused)
KVP_LOG(LOG_ERR, "Auto pool Index %d not found.\n",
op_msg->body.kvp_enum_data.index);
#endif
op_msg->hdr.error = HV_KVP_S_CONT;
op_msg->hdr.error = HV_S_CONT;
error = -1;
break;
}
kvp_op_enumerate_done:
if (error != 0)
op_msg->hdr.error = HV_S_CONT;
return(error);
}
@ -1496,10 +1499,13 @@ main(int argc, char *argv[])
*/
error = kvp_op_hdlrs[op].kvp_op_exec(hv_msg,
(void *)&kvp_op_hdlrs[op]);
if (error != 0 && hv_msg->hdr.error != HV_KVP_S_CONT)
KVP_LOG(LOG_WARNING,
"Operation failed OP = %d, error = 0x%x\n",
op, error);
if (error != 0) {
assert(hv_msg->hdr.error != HV_S_OK);
if (hv_msg->hdr.error != HV_S_CONT)
KVP_LOG(LOG_WARNING,
"Operation failed OP = %d, error = 0x%x\n",
op, error);
}
}
/*

44
sys/dev/hyperv/utilities/hv_kvp.c
View File

@ -72,8 +72,6 @@ __FBSDID("$FreeBSD$");
/* hv_kvp defines */
#define BUFFERSIZE sizeof(struct hv_kvp_msg)
#define KVP_SUCCESS 0
#define KVP_ERROR 1
#define kvp_hdr hdr.kvp_hdr
#define KVP_FWVER_MAJOR 3
@ -480,7 +478,7 @@ hv_kvp_convert_usermsg_to_hostmsg(struct hv_kvp_msg *umsg, struct hv_kvp_msg *hm
case HV_KVP_OP_SET_IP_INFO:
case HV_KVP_OP_SET:
case HV_KVP_OP_DELETE:
return (KVP_SUCCESS);
return (0);
case HV_KVP_OP_ENUMERATE:
host_exchg_data = &hmsg->body.kvp_enum_data.data;
@ -501,9 +499,9 @@ hv_kvp_convert_usermsg_to_hostmsg(struct hv_kvp_msg *umsg, struct hv_kvp_msg *hm
host_exchg_data->value_type = HV_REG_SZ;
if ((hkey_len < 0) || (hvalue_len < 0))
return (HV_KVP_E_FAIL);
return (EINVAL);
return (KVP_SUCCESS);
return (0);
case HV_KVP_OP_GET:
host_exchg_data = &hmsg->body.kvp_get.data;
@ -519,12 +517,12 @@ hv_kvp_convert_usermsg_to_hostmsg(struct hv_kvp_msg *umsg, struct hv_kvp_msg *hm
host_exchg_data->value_type = HV_REG_SZ;
if ((hkey_len < 0) || (hvalue_len < 0))
return (HV_KVP_E_FAIL);
return (EINVAL);
return (KVP_SUCCESS);
return (0);
default:
return (HV_KVP_E_FAIL);
return (EINVAL);
}
}
@ -533,16 +531,13 @@ hv_kvp_convert_usermsg_to_hostmsg(struct hv_kvp_msg *umsg, struct hv_kvp_msg *hm
* Send the response back to the host.
*/
static void
hv_kvp_respond_host(hv_kvp_sc *sc, int error)
hv_kvp_respond_host(hv_kvp_sc *sc, uint32_t error)
{
struct hv_vmbus_icmsg_hdr *hv_icmsg_hdrp;
hv_icmsg_hdrp = (struct hv_vmbus_icmsg_hdr *)
&sc->rcv_buf[sizeof(struct hv_vmbus_pipe_hdr)];
if (error)
error = HV_KVP_E_FAIL;
hv_icmsg_hdrp->status = error;
hv_icmsg_hdrp->icflags = HV_ICMSGHDRFLAG_TRANSACTION |
HV_ICMSGHDRFLAG_RESPONSE;
@ -612,8 +607,10 @@ hv_kvp_process_request(void *context, int pending)
error = vmbus_ic_negomsg(&sc->util_sc,
kvp_buf, &recvlen, KVP_FWVER, KVP_MSGVER);
/* XXX handle vmbus_ic_negomsg failure. */
hv_kvp_respond_host(sc, error);
if (!error)
hv_kvp_respond_host(sc, HV_S_OK);
else
hv_kvp_respond_host(sc, HV_E_FAIL);
/*
* It is ok to not acquire the mutex before setting
* req_in_progress here because negotiation is the
@ -657,7 +654,7 @@ hv_kvp_process_request(void *context, int pending)
*/
if (hv_kvp_req_in_progress(sc)) {
hv_kvp_log_info("%s: request was still active after wait so failing\n", __func__);
hv_kvp_respond_host(sc, HV_KVP_E_FAIL);
hv_kvp_respond_host(sc, HV_E_FAIL);
sc->req_in_progress = false;
}
@ -737,9 +734,9 @@ hv_kvp_dev_daemon_read(struct cdev *dev, struct uio *uio, int ioflag __unused)
struct hv_kvp_msg *hv_kvp_dev_buf;
hv_kvp_sc *sc = (hv_kvp_sc*)dev->si_drv1;
/* Check hv_kvp daemon registration status*/
/* Read is not allowed util registering is done. */
if (!sc->register_done)
return (KVP_ERROR);
return (EPERM);
sema_wait(&sc->dev_sema);
@ -789,7 +786,7 @@ hv_kvp_dev_daemon_write(struct cdev *dev, struct uio *uio, int ioflag __unused)
}
else {
hv_kvp_log_info("%s, KVP Registration Failed\n", __func__);
return (KVP_ERROR);
return (EINVAL);
}
} else {
@ -799,10 +796,15 @@ hv_kvp_dev_daemon_write(struct cdev *dev, struct uio *uio, int ioflag __unused)
struct hv_kvp_msg *hmsg = sc->host_kvp_msg;
struct hv_kvp_msg *umsg = &sc->daemon_kvp_msg;
hv_kvp_convert_usermsg_to_hostmsg(umsg, hmsg);
hv_kvp_respond_host(sc, KVP_SUCCESS);
error = hv_kvp_convert_usermsg_to_hostmsg(umsg, hmsg);
hv_kvp_respond_host(sc, umsg->hdr.error);
wakeup(sc);
sc->req_in_progress = false;
if (umsg->hdr.error != HV_S_OK)
hv_kvp_log_info("%s, Error 0x%x from daemon\n",
__func__, umsg->hdr.error);
if (error)
hv_kvp_log_info("%s, Error from convert\n", __func__);
}
sc->daemon_busy = false;
@ -865,7 +867,7 @@ hv_kvp_attach(device_t dev)
child = SYSCTL_CHILDREN(device_get_sysctl_tree(dev));
SYSCTL_ADD_INT(ctx, child, OID_AUTO, "hv_kvp_log",
CTLFLAG_RW, &hv_kvp_log, 0, "Hyperv KVP service log level");
CTLFLAG_RWTUN, &hv_kvp_log, 0, "Hyperv KVP service log level");
TASK_INIT(&sc->task, 0, hv_kvp_process_request, sc);

13
sys/dev/hyperv/utilities/hv_kvp.h
View File

@ -144,19 +144,6 @@ enum hv_kvp_exchg_pool {
HV_KVP_POOL_COUNT /* Number of pools, must be last. */
};
/*
* Some Hyper-V status codes.
*/
#define HV_KVP_S_OK 0x00000000
#define HV_KVP_E_FAIL 0x80004005
#define HV_KVP_S_CONT 0x80070103
#define HV_ERROR_NOT_SUPPORTED 0x80070032
#define HV_ERROR_MACHINE_LOCKED 0x800704F7
#define HV_ERROR_DEVICE_NOT_CONNECTED 0x8007048F
#define HV_INVALIDARG 0x80070057
#define HV_KVP_GUID_NOTFOUND 0x80041002
#define ADDR_FAMILY_NONE 0x00
#define ADDR_FAMILY_IPV4 0x01
#define ADDR_FAMILY_IPV6 0x02

15
sys/dev/hyperv/utilities/hv_utilreg.h
View File

@ -29,10 +29,17 @@
#ifndef _HV_UTILREG_H_
#define _HV_UTILREG_H_
#define HV_S_OK 0x00000000
#define HV_E_FAIL 0x80004005
#define HV_ERROR_NOT_SUPPORTED 0x80070032
#define HV_ERROR_MACHINE_LOCKED 0x800704F7
/*
* Some Hyper-V status codes.
*/
#define HV_S_OK 0x00000000
#define HV_E_FAIL 0x80004005
#define HV_S_CONT 0x80070103
#define HV_ERROR_NOT_SUPPORTED 0x80070032
#define HV_ERROR_MACHINE_LOCKED 0x800704F7
#define HV_ERROR_DEVICE_NOT_CONNECTED 0x8007048F
#define HV_INVALIDARG 0x80070057
#define HV_GUID_NOTFOUND 0x80041002
/*
* Common defines for Hyper-V ICs