diff options
Diffstat (limited to 'zebra/netconf_netlink.c')
| -rw-r--r-- | zebra/netconf_netlink.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/zebra/netconf_netlink.c b/zebra/netconf_netlink.c index f9cb37a3cf..56f56bfe66 100644 --- a/zebra/netconf_netlink.c +++ b/zebra/netconf_netlink.c @@ -29,6 +29,7 @@ #include "linux/netconf.h" +#include "lib/lib_errors.h" #include "zebra/zebra_ns.h" #include "zebra/zebra_dplane.h" #include "zebra/kernel_netlink.h" @@ -185,4 +186,56 @@ int netlink_request_netconf(int sockfd) return netlink_request(nls, &req); } +extern struct zebra_privs_t zserv_privs; +/* + * Currently netconf has no ability to set from netlink. + * So we've received a request to do this work in the data plane. + * as such we need to set the value via the /proc system + */ +enum netlink_msg_status netlink_put_intf_netconfig(struct nl_batch *bth, + struct zebra_dplane_ctx *ctx) +{ + const char *ifname = dplane_ctx_get_ifname(ctx); + enum dplane_netconf_status_e mpls_on = dplane_ctx_get_netconf_mpls(ctx); + char set[64]; + char mpls_proc[PATH_MAX]; + int fd, ret = FRR_NETLINK_ERROR; + + snprintf(mpls_proc, sizeof(mpls_proc), + "/proc/sys/net/mpls/conf/%s/input", ifname); + + if (mpls_on == DPLANE_NETCONF_STATUS_ENABLED) + snprintf(set, sizeof(set), "1\n"); + else if (mpls_on == DPLANE_NETCONF_STATUS_DISABLED) + snprintf(set, sizeof(set), "0\n"); + else { + flog_err_sys( + EC_LIB_DEVELOPMENT, + "%s: Expected interface %s to be set to ENABLED or DISABLED was %d", + __func__, ifname, mpls_on); + return ret; + } + + frr_with_privs (&zserv_privs) { + fd = open(mpls_proc, O_WRONLY); + if (fd < 0) { + flog_err_sys( + EC_LIB_SOCKET, + "%s: Unable to open %s for writing: %s(%d)", + __func__, mpls_proc, safe_strerror(errno), + errno); + return ret; + } + if (write(fd, set, 2) == 2) + ret = FRR_NETLINK_SUCCESS; + else + flog_err_sys(EC_LIB_SOCKET, + "%s: Unsuccessful write to %s: %s(%d)", + __func__, mpls_proc, safe_strerror(errno), + errno); + close(fd); + } + return ret; +} + #endif /* HAVE_NETLINK */ |