@@ -39,6 +39,9 @@
#include <erec.h>
#include <iface.h>
+#define NFT_MONTRACE 131439
+/* This value is OR of monitor_flags for trace event and NFNLGRP_NFTABLES */
+
const struct input_descriptor indesc_netlink = {
.name = "netlink",
.type = INDESC_NETLINK,
@@ -3078,21 +3081,34 @@ static int netlink_events_cb(const struct nlmsghdr *nlh, void *data)
int netlink_monitor(struct netlink_mon_handler *monhandler,
struct mnl_socket *nf_sock)
{
- int group;
+ int group = NFNLGRP_NFTRACE, val;
- group = NFNLGRP_NFTABLES;
- if (mnl_socket_setsockopt(nf_sock, NETLINK_ADD_MEMBERSHIP, &group,
- sizeof(int)) < 0)
- return netlink_io_error(monhandler->ctx, monhandler->loc,
+ val = monhandler->monitor_flags | NFNLGRP_NFTABLES;
+ if (val == NFT_MONTRACE) {
+ if (mnl_socket_setsockopt(nf_sock, NETLINK_ADD_MEMBERSHIP,
+ &group, sizeof(int)) < 0)
+ return netlink_io_error(monhandler->ctx,
+ monhandler->loc,
"Could not bind to netlink socket %s",
strerror(errno));
-
- group = NFNLGRP_NFTRACE;
- if (mnl_socket_setsockopt(nf_sock, NETLINK_ADD_MEMBERSHIP, &group,
- sizeof(int)) < 0)
- return netlink_io_error(monhandler->ctx, monhandler->loc,
+ } else {
+ if (val < 0) {
+ if (mnl_socket_setsockopt(nf_sock,
+ NETLINK_ADD_MEMBERSHIP, &group,
+ sizeof(int)) < 0)
+ return netlink_io_error(monhandler->ctx,
+ monhandler->loc,
+ "Could not bind to netlink socket %s",
+ strerror(errno));
+ }
+ group = NFNLGRP_NFTABLES;
+ if (mnl_socket_setsockopt(nf_sock, NETLINK_ADD_MEMBERSHIP,
+ &group, sizeof(int)) < 0)
+ return netlink_io_error(monhandler->ctx,
+ monhandler->loc,
"Could not bind to netlink socket %s",
strerror(errno));
+ }
return mnl_nft_event_listener(nf_sock, netlink_events_cb,
monhandler);
Subscribe nft monitor to both NFNLGRP_NFTABLES and NFNLGRP_NFTRACE. nft monitor trace subscribes only to NFNLGRP_NFTRACE. Other event reporting options to only NFNLGRP_NFTABLES. Signed-off-by: Varsha Rao <rvarsha016@gmail.com> --- Changes in v1: - Subscribe nft monitor to only _NFTABLES. - Subsribe nft monitor trace to only _NFTRACE. Changes in v2: - Subsribe nft monitor to both _NFTABLES and _NFTRACE. - Subscribe other events to _NFTABLES. - Modified commit message. Changes in v3: - Define constant NFT_MONTRACE. src/netlink.c | 36 ++++++++++++++++++++++++++---------- 1 file changed, 26 insertions(+), 10 deletions(-)