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author | Jakub Kicinski <kuba@kernel.org> | 2024-03-08 22:03:19 +0300 |
---|---|---|
committer | Jakub Kicinski <kuba@kernel.org> | 2024-03-12 01:15:42 +0300 |
commit | ba980f8dff548ec4558ca9c5f20ac6545920debb (patch) | |
tree | a1e151afcf996eb9eed7d5f2e1e7fc84792d073d /tools/net/ynl/ynl-gen-c.py | |
parent | a0d942960d9b0ba352b2400e1a3b8fb02d911143 (diff) | |
download | linux-ba980f8dff548ec4558ca9c5f20ac6545920debb.tar.xz |
netlink: specs: support generating code for genl socket priv
The family struct is auto-generated for new families, support
use of the sock_priv_* mechanism added in commit a731132424ad
("genetlink: introduce per-sock family private storage").
For example if the family wants to use struct sk_buff as its
private struct (unrealistic but just for illustration), it would
add to its spec:
kernel-family:
headers: [ "linux/skbuff.h" ]
sock-priv: struct sk_buff
ynl-gen-c will declare the appropriate priv size and hook
in function prototypes to be implemented by the family.
Link: https://lore.kernel.org/r/20240308190319.2523704-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'tools/net/ynl/ynl-gen-c.py')
-rwxr-xr-x | tools/net/ynl/ynl-gen-c.py | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/tools/net/ynl/ynl-gen-c.py b/tools/net/ynl/ynl-gen-c.py index 5bb7ca01fe51..6b7eb2d2aaf1 100755 --- a/tools/net/ynl/ynl-gen-c.py +++ b/tools/net/ynl/ynl-gen-c.py @@ -2342,6 +2342,10 @@ def print_kernel_family_struct_hdr(family, cw): cw.p(f"extern struct genl_family {family.c_name}_nl_family;") cw.nl() + if 'sock-priv' in family.kernel_family: + cw.p(f'void {family.c_name}_nl_sock_priv_init({family.kernel_family["sock-priv"]} *priv);') + cw.p(f'void {family.c_name}_nl_sock_priv_destroy({family.kernel_family["sock-priv"]} *priv);') + cw.nl() def print_kernel_family_struct_src(family, cw): @@ -2363,6 +2367,11 @@ def print_kernel_family_struct_src(family, cw): if family.mcgrps['list']: cw.p(f'.mcgrps\t\t= {family.c_name}_nl_mcgrps,') cw.p(f'.n_mcgrps\t= ARRAY_SIZE({family.c_name}_nl_mcgrps),') + if 'sock-priv' in family.kernel_family: + cw.p(f'.sock_priv_size\t= sizeof({family.kernel_family["sock-priv"]}),') + # Force cast here, actual helpers take pointer to the real type. + cw.p(f'.sock_priv_init\t= (void *){family.c_name}_nl_sock_priv_init,') + cw.p(f'.sock_priv_destroy = (void *){family.c_name}_nl_sock_priv_destroy,') cw.block_end(';') @@ -2659,6 +2668,7 @@ def main(): cw.p(f'#include "{os.path.basename(args.out_file[:-2])}.h"') cw.nl() headers = ['uapi/' + parsed.uapi_header] + headers += parsed.kernel_family.get('headers', []) else: cw.p('#include <stdlib.h>') cw.p('#include <string.h>') |