1 files changed, 57 insertions, 0 deletions
diff --git a/src/libknot/xdp/eth.h b/src/libknot/xdp/eth.h
new file mode 100644
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+++ b/src/libknot/xdp/eth.h
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+/*  Copyright (C) 2020 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include <stddef.h>
+
+/*!
+ * \brief Get number of combined queues of a network interface.
+ *
+ * \param devname  Name of the ethdev (e.g. eth1).
+ *
+ * \retval < 0   KNOT_E* if error.
+ * \retval 1     Default no of queues if the dev does not support.
+ * \return > 0   Number of queues.
+ */
+int knot_eth_queues(const char *devname);
+
+/*!
+ * \brief Get the corresponding network interface name for the address.
+ *
+ * \param addr     Address of the inteface.
+ * \param out      Output buffer for the interface name.
+ * \param out_len  Size of the output buffer.
+ *
+ * \return KNOT_E*
+ */
+int knot_eth_name_from_addr(const struct sockaddr_storage *addr, char *out,
+                            size_t out_len);
+
+typedef enum {
+	KNOT_XDP_MODE_NONE, /*!< XDP not available, BPF not loaded, or error. */
+	KNOT_XDP_MODE_FULL, /*!< Full XDP support in driver or HW. */
+	KNOT_XDP_MODE_EMUL, /*!< Emulated XDP support. */
+} knot_xdp_mode_t;
+
+/*!
+ * \brief Return the current XDP mode of a network inteface.
+ *
+ * \param if_index  Index of the interface, output from if_nametoindex().
+ *
+ * \return Current XDP mode.
+ */
+knot_xdp_mode_t knot_eth_xdp_mode(int if_index);