summaryrefslogtreecommitdiffstats
path: root/include/net/geneve.h
diff options
context:
space:
mode:
authorSalah Triki <salah.triki@gmail.com>2026-09-17 14:00:52 +0100
committerJonathan Cameron <jonathan.cameron@oss.qualcomm.com>2026-09-30 18:59:55 +0100
commite8dd273d199f5bbe295a8e3d8b777c5505b6b2e1 (patch)
tree767c7e109d3e6b9ec6549e99dfec9085d01318ad /include/net/geneve.h
downloadlinux-stable-e8dd273d199f5bbe295a8e3d8b777c5505b6b2e1.tar.gz
linux-stable-e8dd273d199f5bbe295a8e3d8b777c5505b6b2e1.zip
iio: proximity: isl29501: Fix return type of isl29501_register_writegrafted
isl29501_register_write() was returning a u32 instead of an int. Since the function returns negative error codes (such as -ERANGE or return values from i2c_smbus_write_byte_data()), returning an unsigned integer type prevents callers from correctly checking for negative error conditions. Fix this by changing the function return type from u32 to int. This was found through manual code review. Fixes: 1c28799257bc ("iio: light: isl29501: Add support for the ISL29501 ToF sensor.") Signed-off-by: Salah Triki <salah.triki@gmail.com> Reviewed-by: Joshua Crofts <joshua.crofts1@gmail.com> Cc: stable@vger.kernel.org Signed-off-by: Jonathan Cameron <jonathan.cameron@oss.qualcomm.com>
Diffstat (limited to 'include/net/geneve.h')
-rw-r--r--include/net/geneve.h71
1 files changed, 71 insertions, 0 deletions
diff --git a/include/net/geneve.h b/include/net/geneve.h
new file mode 100644
index 000000000..ba2c14d61
--- /dev/null
+++ b/include/net/geneve.h
@@ -0,0 +1,71 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __NET_GENEVE_H
+#define __NET_GENEVE_H 1
+
+#include <net/udp_tunnel.h>
+
+#define GENEVE_UDP_PORT 6081
+
+/* Geneve Header:
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * |Ver| Opt Len |O|C| Rsvd. | Protocol Type |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Virtual Network Identifier (VNI) | Reserved |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Variable Length Options |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ *
+ * Option Header:
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Option Class | Type |R|R|R| Length |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Variable Option Data |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ */
+
+struct geneve_opt {
+ __be16 opt_class;
+ u8 type;
+#ifdef __LITTLE_ENDIAN_BITFIELD
+ u8 length:5;
+ u8 r3:1;
+ u8 r2:1;
+ u8 r1:1;
+#else
+ u8 r1:1;
+ u8 r2:1;
+ u8 r3:1;
+ u8 length:5;
+#endif
+ u8 opt_data[];
+};
+
+#define GENEVE_CRIT_OPT_TYPE (1 << 7)
+
+struct genevehdr {
+#ifdef __LITTLE_ENDIAN_BITFIELD
+ u8 opt_len:6;
+ u8 ver:2;
+ u8 rsvd1:6;
+ u8 critical:1;
+ u8 oam:1;
+#else
+ u8 ver:2;
+ u8 opt_len:6;
+ u8 oam:1;
+ u8 critical:1;
+ u8 rsvd1:6;
+#endif
+ __be16 proto_type;
+ u8 vni[3];
+ u8 rsvd2;
+ u8 options[];
+};
+
+static inline bool netif_is_geneve(const struct net_device *dev)
+{
+ return dev->rtnl_link_ops &&
+ !strcmp(dev->rtnl_link_ops->kind, "geneve");
+}
+
+#endif /*ifdef__NET_GENEVE_H */