Also add a new parameter interface index incase we want to query specific
interface information.
Signed-off-by: Hangbin Liu <liuhang...@gmail.com>
---
clock.c | 2 +-
rtnl.c | 12 +++++++-----
rtnl.h | 7 ++++---
3 files changed, 12 insertions(+), 9 deletions(-)
diff --git a/clock.c b/clock.c
index b6afba9..59b5f0c 100644
--- a/clock.c
+++ b/clock.c
@@ -1165,7 +1165,7 @@ struct clock *clock_create(enum clock_type type, struct
config *config,
}
port_dispatch(c->uds_port, EV_INITIALIZE, 0);
if (c->pollfd[0].fd >= 0) {
- rtnl_link_query(c->pollfd[0].fd);
+ rtnl_link_query(c->pollfd[0].fd, 0);
}
return c;
}
diff --git a/rtnl.c b/rtnl.c
index 5cddc4b..39faeb7 100644
--- a/rtnl.c
+++ b/rtnl.c
@@ -42,7 +42,7 @@ int rtnl_close(int fd)
return close(fd);
}
-int rtnl_link_query(int fd)
+int rtnl_link_query(int fd, unsigned int if_index)
{
struct sockaddr_nl sa;
struct msghdr msg;
@@ -51,19 +51,21 @@ int rtnl_link_query(int fd)
struct {
struct nlmsghdr hdr;
- struct rtgenmsg gen;
+ struct ifinfomsg ifm;
} __attribute__((packed)) request;
memset(&sa, 0, sizeof(sa));
sa.nl_family = AF_NETLINK;
memset(&request, 0, sizeof(request));
- request.hdr.nlmsg_len = NLMSG_LENGTH(sizeof(request.gen));
+ request.hdr.nlmsg_len = NLMSG_LENGTH(sizeof(request.ifm));
request.hdr.nlmsg_type = RTM_GETLINK;
- request.hdr.nlmsg_flags = NLM_F_REQUEST | NLM_F_DUMP;
+ request.hdr.nlmsg_flags = NLM_F_REQUEST;
request.hdr.nlmsg_seq = 1;
request.hdr.nlmsg_pid = 0;
- request.gen.rtgen_family = AF_UNSPEC;
+ request.ifm.ifi_family = AF_UNSPEC;
+ request.ifm.ifi_index = if_index;
+ request.ifm.ifi_change = 0xffffffff;
iov.iov_base = &request;
iov.iov_len = sizeof(request);
diff --git a/rtnl.h b/rtnl.h
index f1871f2..bd74cba 100644
--- a/rtnl.h
+++ b/rtnl.h
@@ -31,10 +31,11 @@ int rtnl_close(int fd);
/**
* Request the link status from the kernel.
- * @param fd A socket obtained via rtnl_open().
- * @return Zero on success, non-zero otherwise.
+ * @param fd A socket obtained via rtnl_open().
+ * @param index A interface index.
+ * @return Zero on success, non-zero otherwise.
*/
-int rtnl_link_query(int fd);
+int rtnl_link_query(int fd, unsigned int index);
/**
* Read kernel messages looking for a link up/down events.
--
2.5.5
------------------------------------------------------------------------------
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