From: "K. Y. Srinivasan" <kys@microsoft.com>
To: gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org,
devel@linuxdriverproject.org, olaf@aepfle.de, apw@canonical.com,
ben@decadent.org.uk, thozza@redhat.com, dcbw@redhat.com
Cc: "K. Y. Srinivasan" <kys@microsoft.com>
Subject: [PATCH V4 10/10] Tools: hv: Implement the KVP verb - KVP_OP_GET_IP_INFO
Date: Tue, 4 Sep 2012 14:46:42 -0700 [thread overview]
Message-ID: <1346795202-25655-10-git-send-email-kys@microsoft.com> (raw)
In-Reply-To: <1346795202-25655-1-git-send-email-kys@microsoft.com>
Now implement the KVP verb - KVP_OP_GET_IP_INFO. This operation retrieves IP
information for the specified interface.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
---
tools/hv/hv_kvp_daemon.c | 93 ++++++++++++++++++++++++++++++++++++++++++++-
1 files changed, 90 insertions(+), 3 deletions(-)
diff --git a/tools/hv/hv_kvp_daemon.c b/tools/hv/hv_kvp_daemon.c
index 849c438..c8e1013 100644
--- a/tools/hv/hv_kvp_daemon.c
+++ b/tools/hv/hv_kvp_daemon.c
@@ -603,6 +603,69 @@ static char *kvp_if_name_to_mac(char *if_name)
}
+/*
+ * Retrieve the interface name given tha MAC address.
+ */
+
+static char *kvp_mac_to_if_name(char *mac)
+{
+ DIR *dir;
+ struct dirent *entry;
+ FILE *file;
+ char *p, *q, *x;
+ char *if_name = NULL;
+ char buf[256];
+ char *kvp_net_dir = "/sys/class/net/";
+ char dev_id[256];
+ int i;
+
+ dir = opendir(kvp_net_dir);
+ if (dir == NULL)
+ return NULL;
+
+ snprintf(dev_id, sizeof(dev_id), kvp_net_dir);
+ q = dev_id + strlen(kvp_net_dir);
+
+ while ((entry = readdir(dir)) != NULL) {
+ /*
+ * Set the state for the next pass.
+ */
+ *q = '\0';
+
+ strcat(dev_id, entry->d_name);
+ strcat(dev_id, "/address");
+
+ file = fopen(dev_id, "r");
+ if (file == NULL)
+ continue;
+
+ p = fgets(buf, sizeof(buf), file);
+ if (p) {
+ x = strchr(p, '\n');
+ if (x)
+ *x = '\0';
+
+ for (i = 0; i < strlen(p); i++)
+ p[i] = toupper(p[i]);
+
+ if (!strcmp(p, mac)) {
+ /*
+ * Found the MAC match; return the interface
+ * name. The caller will free the memory.
+ */
+ if_name = strdup(entry->d_name);
+ fclose(file);
+ break;
+ }
+ }
+ fclose(file);
+ }
+
+ closedir(dir);
+ return if_name;
+}
+
+
static void kvp_process_ipconfig_file(char *cmd,
char *config_buf, int len,
int element_size, int offset)
@@ -749,10 +812,10 @@ static int kvp_process_ip_address(void *addrp,
}
if ((length - *offset) < addr_length + 1)
- return 1;
+ return HV_E_FAIL;
if (str == NULL) {
strcpy(buffer, "inet_ntop failed\n");
- return 1;
+ return HV_E_FAIL;
}
if (*offset == 0)
strcpy(buffer, tmp);
@@ -796,7 +859,7 @@ kvp_get_ip_info(int family, char *if_name, int op,
if (getifaddrs(&ifap)) {
strcpy(buffer, "getifaddrs failed\n");
- return 1;
+ return HV_E_FAIL;
}
curp = ifap;
@@ -1386,6 +1449,30 @@ int main(void)
}
switch (op) {
+ case KVP_OP_GET_IP_INFO:
+ kvp_ip_val = &hv_msg->body.kvp_ip_val;
+ if_name =
+ kvp_mac_to_if_name((char *)kvp_ip_val->adapter_id);
+
+ if (if_name == NULL) {
+ /*
+ * We could not map the mac address to an
+ * interface name; return error.
+ */
+ hv_msg->error = HV_E_FAIL;
+ break;
+ }
+ error = kvp_get_ip_info(
+ 0, if_name, KVP_OP_GET_IP_INFO,
+ kvp_ip_val,
+ (MAX_IP_ADDR_SIZE * 2));
+
+ if (error)
+ hv_msg->error = error;
+
+ free(if_name);
+ break;
+
case KVP_OP_SET_IP_INFO:
kvp_ip_val = &hv_msg->body.kvp_ip_val;
if_name = kvp_get_if_name(
--
1.7.4.1
prev parent reply other threads:[~2012-09-04 21:29 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-04 21:45 [PATCH V4 00/10] Tools: hv: kvp K. Y. Srinivasan
2012-09-04 21:46 ` [PATCH V4 01/10] Tools: hv: Get rid of some unused variables K. Y. Srinivasan
2012-09-04 21:46 ` [PATCH V4 02/10] Tools: hv: Correctly type string variables K. Y. Srinivasan
2012-09-04 21:46 ` [PATCH V4 03/10] Tools: hv: Add an example script to retrieve DNS entries K. Y. Srinivasan
2012-09-04 21:46 ` [PATCH V4 04/10] Tools: hv: Gather DNS information K. Y. Srinivasan
2012-09-04 21:46 ` [PATCH V4 05/10] Tools: hv: Add an example script to retrieve dhcp state K. Y. Srinivasan
2012-09-04 22:59 ` Greg KH
2012-09-04 23:39 ` KY Srinivasan
2012-09-05 0:04 ` Greg KH
2012-09-05 0:29 ` KY Srinivasan
2012-09-05 2:25 ` KY Srinivasan
2012-09-05 19:12 ` Greg KH
2012-09-04 21:46 ` [PATCH V4 06/10] Tools: hv: Gather DHCP information K. Y. Srinivasan
2012-09-04 21:46 ` [PATCH V4 07/10] Tools: hv: Add an example script to configure an interface K. Y. Srinivasan
2012-09-04 21:46 ` [PATCH V4 08/10] Tools: hv: Implement the KVP verb - KVP_OP_SET_IP_INFO K. Y. Srinivasan
2012-09-04 21:46 ` [PATCH V4 09/10] Tools: hv: Rename the function kvp_get_ip_address() K. Y. Srinivasan
2012-09-04 21:46 ` K. Y. Srinivasan [this message]
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=1346795202-25655-10-git-send-email-kys@microsoft.com \
--to=kys@microsoft.com \
--cc=apw@canonical.com \
--cc=ben@decadent.org.uk \
--cc=dcbw@redhat.com \
--cc=devel@linuxdriverproject.org \
--cc=gregkh@linuxfoundation.org \
--cc=linux-kernel@vger.kernel.org \
--cc=olaf@aepfle.de \
--cc=thozza@redhat.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).