[PATCH v1 5/6] netlink_netfilter: decode counters

[Mathis Marion]

From: Mathis Marion <mathis.marion at silabs.com>

Signed-off-by: Mathis Marion <mathis.marion at silabs.com>
---
 src/netlink_netfilter.c       | 17 ++++++++++++++++-
 src/xlat/nft_counter_attrs.in |  6 ++++++
 2 files changed, 22 insertions(+), 1 deletion(-)
 create mode 100644 src/xlat/nft_counter_attrs.in

diff --git a/src/netlink_netfilter.c b/src/netlink_netfilter.c
index 8fe11882c..fd226e05f 100644
--- a/src/netlink_netfilter.c
+++ b/src/netlink_netfilter.c
@@ -24,6 +24,7 @@
 #include "xlat/nft_chain_attrs.h"
 #include "xlat/nft_cmp_attrs.h"
 #include "xlat/nft_cmp_ops.h"
+#include "xlat/nft_counter_attrs.h"
 #include "xlat/nft_data_attrs.h"
 #include "xlat/nft_expr_attrs.h"
 #include "xlat/nft_flowtable_attrs.h"
@@ -285,6 +286,20 @@ static const struct nfta_decoder nfta_table_decoder = {
 	.size = ARRAY_SIZE(nfta_table_decoders),
 };
 
+static bool decode_counters(struct tcb *tcp, kernel_ulong_t addr,
+			    unsigned int len, const void *opaque_data)
+{
+	static const nla_decoder_t decoders[] = {
+		[NFTA_COUNTER_BYTES]	= decode_nla_be64,
+		[NFTA_COUNTER_PACKETS]	= decode_nla_be64,
+		[NFTA_COUNTER_PAD]	= NULL,
+	};
+
+	decode_nlattr(tcp, addr, len, nft_counter_attrs, "NFTA_COUNTER_???",
+		      decoders, ARRAY_SIZE(decoders), opaque_data);
+	return true;
+}
+
 static const nla_decoder_t nfta_chain_decoders[] = {
 	[NFTA_CHAIN_TABLE]	= decode_nla_str,
 	[NFTA_CHAIN_HANDLE]	= decode_nla_be64,
@@ -293,7 +308,7 @@ static const nla_decoder_t nfta_chain_decoders[] = {
 	[NFTA_CHAIN_POLICY]	= decode_verdict_code,
 	[NFTA_CHAIN_USE]	= decode_nla_be32,
 	[NFTA_CHAIN_TYPE]	= decode_nla_str,
-	[NFTA_CHAIN_COUNTERS]	= NULL, // TODO
+	[NFTA_CHAIN_COUNTERS]	= decode_counters,
 	[NFTA_CHAIN_PAD]	= NULL,
 	[NFTA_CHAIN_FLAGS]	= decode_chain_flags,
 	[NFTA_CHAIN_ID]		= decode_nla_be32,
diff --git a/src/xlat/nft_counter_attrs.in b/src/xlat/nft_counter_attrs.in
new file mode 100644
index 000000000..b113e640d
--- /dev/null
+++ b/src/xlat/nft_counter_attrs.in
@@ -0,0 +1,6 @@
+#unconditional
+#value_indexed
+NFTA_COUNTER_UNSPEC
+NFTA_COUNTER_BYTES
+NFTA_COUNTER_PACKETS
+NFTA_COUNTER_PAD
-- 
2.47.2