tmakin/ack-tegra
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

UAPI: net/sched: Use __struct_group() in flex struct tc_u32_sel

Browse Source 
Use the `__struct_group()` helper to create a new tagged
`struct tc_u32_sel_hdr`. This structure groups together all the
members of the flexible `struct tc_u32_sel` except the flexible
array. As a result, the array is effectively separated from the
rest of the members without modifying the memory layout of the
flexible structure.

This new tagged struct will be used to fix problematic declarations
of middle-flex-arrays in composite structs[1].

[1] https://git.kernel.org/linus/d88cabfd9abc

Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Link: https://patch.msgid.link/e59fe833564ddc5b2cc83056a4c504be887d6193.1723586870.git.gustavoars@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Gustavo A. R. Silva
2024-08-13 16:15:02 -06:00
committed by Jakub Kicinski
parent 35c9ffba80
commit 216203bdc2
1 changed files with 11 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files
include/uapi/linux/pkt_cls.h
+11 -8
View File
@@ -246,16 +246,19 @@ struct tc_u32_key {
};
struct tc_u32_sel {
unsigned char flags;
unsigned char offshift;
unsigned char nkeys;
/* New members MUST be added within the __struct_group() macro below. */
__struct_group(tc_u32_sel_hdr, hdr, /* no attrs */,
unsigned char flags;
unsigned char offshift;
unsigned char nkeys;
__be16 offmask;
__u16 off;
short offoff;
__be16 offmask;
__u16 off;
short offoff;
short hoff;
__be32 hmask;
short hoff;
__be32 hmask;
);
struct tc_u32_key keys[];
};