Move nl_sendgetlink() to nl.c.
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parent
180ee36626
commit
e5d9f4acf2
@ -33,7 +33,6 @@
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#include <net/if.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <errno.h>
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#include <poll.h>
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@ -138,39 +137,9 @@ void handle_nl_message(struct client_state_t *cs)
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} while (ret > 0);
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}
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static int nl_sendgetlink(struct client_state_t *cs)
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{
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char nlbuf[8192];
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struct nlmsghdr *nlh = (struct nlmsghdr *)nlbuf;
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ssize_t r;
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memset(nlbuf, 0, sizeof nlbuf);
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nlh->nlmsg_len = NLMSG_LENGTH(sizeof (struct rtattr));
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nlh->nlmsg_type = RTM_GETLINK;
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nlh->nlmsg_flags = NLM_F_REQUEST | NLM_F_ROOT;
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nlh->nlmsg_seq = time(NULL);
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struct sockaddr_nl addr = {
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.nl_family = AF_NETLINK,
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};
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retry_sendto:
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r = sendto(cs->nlFd, nlbuf, nlh->nlmsg_len, 0,
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(struct sockaddr *)&addr, sizeof addr);
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if (r < 0) {
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if (errno == EINTR)
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goto retry_sendto;
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else {
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log_warning("%s: (%s) netlink sendto socket failed: %s",
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client_config.interface, __func__, strerror(errno));
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return -1;
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}
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}
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return 0;
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}
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int nl_getifdata(struct client_state_t *cs)
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{
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if (nl_sendgetlink(cs))
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if (nl_sendgetlink(cs->nlFd))
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return -1;
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for (int pr = 0; !pr;) {
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31
ndhc/nl.c
31
ndhc/nl.c
@ -34,6 +34,7 @@
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#include <unistd.h>
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#include <string.h>
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#include <fcntl.h>
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#include <time.h>
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#include <errno.h>
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#include "log.h"
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#include "nl.h"
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@ -142,6 +143,36 @@ int nl_foreach_nlmsg(char *buf, size_t blen, uint32_t portid,
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return 0;
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}
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int nl_sendgetlink(int fd)
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{
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char nlbuf[512];
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struct nlmsghdr *nlh = (struct nlmsghdr *)nlbuf;
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ssize_t r;
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memset(nlbuf, 0, sizeof nlbuf);
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nlh->nlmsg_len = NLMSG_LENGTH(sizeof (struct rtattr));
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nlh->nlmsg_type = RTM_GETLINK;
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nlh->nlmsg_flags = NLM_F_REQUEST | NLM_F_ROOT;
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nlh->nlmsg_seq = time(NULL);
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struct sockaddr_nl addr = {
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.nl_family = AF_NETLINK,
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};
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retry_sendto:
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r = sendto(fd, nlbuf, nlh->nlmsg_len, 0,
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(struct sockaddr *)&addr, sizeof addr);
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if (r < 0) {
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if (errno == EINTR)
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goto retry_sendto;
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else {
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log_warning("%s: netlink sendto socket failed: %s",
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__func__, strerror(errno));
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return -1;
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}
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}
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return 0;
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}
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int nl_open(int nltype, int nlgroup, int *nlportid)
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{
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int fd;
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@ -77,6 +77,7 @@ extern ssize_t nl_recv_buf(int fd, char *buf, size_t blen);
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typedef int (*nlmsg_foreach_fn)(const struct nlmsghdr *, void *);
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extern int nl_foreach_nlmsg(char *buf, size_t blen, uint32_t portid,
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nlmsg_foreach_fn pfn, void *fnarg);
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extern int nl_sendgetlink(int fd);
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extern int nl_open(int nltype, int nlgroup, int *nlportid);
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