[PATCH net] geneve: fix hint header definition wrt endianness
From: Antoine Tenart <atenart@kernel.org>
Date: 2026-07-09 12:48:04
Subsystem:
networking drivers, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Bitfields are packed differently depending on the endianness, take it into
account in the GRO hint header definition.
Fixes: e0a12cbf262b ("geneve: add GRO hint output path")
Cc: Paolo Abeni <pabeni@redhat.com>
Reported-by: Sashiko <sashiko-bot@kernel.org>
Closes: https://sashiko.dev/#/patchset/20260529144713.780938-1-atenart%40kernel.org
Signed-off-by: Antoine Tenart <atenart@kernel.org>
---
drivers/net/geneve.c | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/drivers/net/geneve.c b/drivers/net/geneve.c
index 9afff7bcaa0b..b25b0c4de4d1 100644
--- a/drivers/net/geneve.c
+++ b/drivers/net/geneve.c@@ -43,8 +43,17 @@ MODULE_PARM_DESC(log_ecn_error, "Log packets received with corrupted ECN"); #define GENEVE_OPT_GRO_HINT_LEN 1 struct geneve_opt_gro_hint { +#if defined(__LITTLE_ENDIAN_BITFIELD) u8 inner_proto_id:2, - nested_is_v6:1; + nested_is_v6:1, + rsvd:5; +#elif defined(__BIG_ENDIAN_BITFIELD) + u8 rsvd:5, + nested_is_v6:1, + inner_proto_id:2; +#else +#error "Please fix <asm/byteorder.h>" +#endif u8 nested_nh_offset; u8 nested_tp_offset; u8 nested_hdr_len;
--
2.55.0