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| author | Konstantin Shabanov <mail@etehtsea.me> | 2026-05-12 17:30:53 +0700 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2026-05-15 15:52:18 -0700 |
| commit | 55834f0d742172b5cbc177cac88010b97bff4897 (patch) | |
| tree | 9ff39c0731d25490c82f1486599df55f571915f4 /scripts/objdiff | |
| parent | 822d4a8e390a08ccfaf2abb347ae670b230b196f (diff) | |
docs: netlink: Correct buffer sizing info
Update the docs to match the code (include/linux/netlink.h):
/*
* skb should fit one page. This choice is good for headerless malloc.
* But we should limit to 8K so that userspace does not have to
* use enormous buffer sizes on recvmsg() calls just to avoid
* MSG_TRUNC when PAGE_SIZE is very large.
*/
#if PAGE_SIZE < 8192UL
#define NLMSG_GOODSIZE SKB_WITH_OVERHEAD(PAGE_SIZE)
#else
#define NLMSG_GOODSIZE SKB_WITH_OVERHEAD(8192UL)
#endif
Signed-off-by: Konstantin Shabanov <mail@etehtsea.me>
Link: https://patch.msgid.link/20260512103101.1076173-1-mail@etehtsea.me
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'scripts/objdiff')
0 files changed, 0 insertions, 0 deletions