Adding upstream version 3.2.6.upstream/3.2.6upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 62 insertions, 0 deletions

diff --git a/src/libknot/xdp/msg.h b/src/libknot/xdp/msg.h
new file mode 100644
index 0000000..f567921
--- /dev/null
+++ b/src/libknot/xdp/msg.h
@@ -0,0 +1,62 @@
+/*  Copyright (C) 2022 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/>.
+ */
+
+/*!
+ * \file
+ *
+ * \brief XDP message description.
+ *
+ * \addtogroup xdp
+ * @{
+ */
+
+#pragma once
+
+#include <stdint.h>
+#include <linux/if_ether.h>
+#include <netinet/in.h>
+#include <sys/uio.h>
+
+/*! \brief Message flags. */
+typedef enum {
+	KNOT_XDP_MSG_IPV6  = (1 << 0), /*!< This packet is a IPv6 (IPv4 otherwise). */
+	KNOT_XDP_MSG_TCP   = (1 << 1), /*!< This packet is a TCP (UDP otherwise). */
+	KNOT_XDP_MSG_SYN   = (1 << 2), /*!< SYN flag set (TCP only). */
+	KNOT_XDP_MSG_ACK   = (1 << 3), /*!< ACK flag set (TCP only). */
+	KNOT_XDP_MSG_FIN   = (1 << 4), /*!< FIN flag set (TCP only). */
+	KNOT_XDP_MSG_RST   = (1 << 5), /*!< RST flag set (TCP only). */
+	KNOT_XDP_MSG_MSS   = (1 << 6), /*!< MSS option in TCP header (TCP only). */
+	KNOT_XDP_MSG_WSC   = (1 << 7), /*!< Window Scale option in TCP header. */
+	KNOT_XDP_MSG_VLAN  = (1 << 8), /*!< This packet will contain VLAN header. */
+} knot_xdp_msg_flag_t;
+
+/*! \brief Packet description with src & dst MAC & IP addrs + DNS payload. */
+typedef struct knot_xdp_msg {
+	struct sockaddr_in6 ip_from;
+	struct sockaddr_in6 ip_to;
+	uint8_t eth_from[ETH_ALEN];
+	uint8_t eth_to[ETH_ALEN];
+	knot_xdp_msg_flag_t flags;
+	struct iovec payload;
+	uint32_t seqno;
+	uint32_t ackno;
+	uint16_t mss;
+	uint16_t win;
+	uint8_t win_scale;
+	uint16_t vlan_tci;
+} knot_xdp_msg_t;
+
+/*! @} */