rtnl: update rtgenmsg to ifinfomsg when request link info
The previous function use general message and will dump all interfaces' information. Now update with ifinfomsg so we could get specific interface's information. We still could get all interfaces' info if set device to NULL. Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>master
parent
7e294a4d04
commit
05bba46198
2
port.c
2
port.c
|
@ -1512,7 +1512,7 @@ static int port_initialize(struct port *p)
|
||||||
if (p->fda.fd[FD_RTNL] == -1)
|
if (p->fda.fd[FD_RTNL] == -1)
|
||||||
p->fda.fd[FD_RTNL] = rtnl_open();
|
p->fda.fd[FD_RTNL] = rtnl_open();
|
||||||
if (p->fda.fd[FD_RTNL] >= 0)
|
if (p->fda.fd[FD_RTNL] >= 0)
|
||||||
rtnl_link_query(p->fda.fd[FD_RTNL]);
|
rtnl_link_query(p->fda.fd[FD_RTNL], p->iface->name);
|
||||||
}
|
}
|
||||||
|
|
||||||
port_nrate_initialize(p);
|
port_nrate_initialize(p);
|
||||||
|
|
12
rtnl.c
12
rtnl.c
|
@ -42,7 +42,7 @@ int rtnl_close(int fd)
|
||||||
return close(fd);
|
return close(fd);
|
||||||
}
|
}
|
||||||
|
|
||||||
int rtnl_link_query(int fd)
|
int rtnl_link_query(int fd, char *device)
|
||||||
{
|
{
|
||||||
struct sockaddr_nl sa;
|
struct sockaddr_nl sa;
|
||||||
struct msghdr msg;
|
struct msghdr msg;
|
||||||
|
@ -51,19 +51,21 @@ int rtnl_link_query(int fd)
|
||||||
|
|
||||||
struct {
|
struct {
|
||||||
struct nlmsghdr hdr;
|
struct nlmsghdr hdr;
|
||||||
struct rtgenmsg gen;
|
struct ifinfomsg ifm;
|
||||||
} __attribute__((packed)) request;
|
} __attribute__((packed)) request;
|
||||||
|
|
||||||
memset(&sa, 0, sizeof(sa));
|
memset(&sa, 0, sizeof(sa));
|
||||||
sa.nl_family = AF_NETLINK;
|
sa.nl_family = AF_NETLINK;
|
||||||
|
|
||||||
memset(&request, 0, sizeof(request));
|
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_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_seq = 1;
|
||||||
request.hdr.nlmsg_pid = 0;
|
request.hdr.nlmsg_pid = 0;
|
||||||
request.gen.rtgen_family = AF_UNSPEC;
|
request.ifm.ifi_family = AF_UNSPEC;
|
||||||
|
request.ifm.ifi_index = if_nametoindex(device ? device : "");
|
||||||
|
request.ifm.ifi_change = 0xffffffff;
|
||||||
|
|
||||||
iov.iov_base = &request;
|
iov.iov_base = &request;
|
||||||
iov.iov_len = sizeof(request);
|
iov.iov_len = sizeof(request);
|
||||||
|
|
7
rtnl.h
7
rtnl.h
|
@ -31,10 +31,11 @@ int rtnl_close(int fd);
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* Request the link status from the kernel.
|
* Request the link status from the kernel.
|
||||||
* @param fd A socket obtained via rtnl_open().
|
* @param fd A socket obtained via rtnl_open().
|
||||||
* @return Zero on success, non-zero otherwise.
|
* @param device Interface name. Request all iface's status if set NULL.
|
||||||
|
* @return Zero on success, non-zero otherwise.
|
||||||
*/
|
*/
|
||||||
int rtnl_link_query(int fd);
|
int rtnl_link_query(int fd, char *device);
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* Read kernel messages looking for a link up/down events.
|
* Read kernel messages looking for a link up/down events.
|
||||||
|
|
Loading…
Reference in New Issue