Date: Sun, 18 Jul 2021 00:36:00 GMT From: "Bjoern A. Zeeb" <bz@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org Subject: git: 834afdc9242d - stable/13 - LinuxKPI: add net_ratelimit() Message-ID: <202107180036.16I0a0SP048556@gitrepo.freebsd.org>
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The branch stable/13 has been updated by bz: URL: https://cgit.FreeBSD.org/src/commit/?id=834afdc9242db433def9f5aad2a75dc2f558142c commit 834afdc9242db433def9f5aad2a75dc2f558142c Author: Bjoern A. Zeeb <bz@FreeBSD.org> AuthorDate: 2021-03-23 17:00:22 +0000 Commit: Bjoern A. Zeeb <bz@FreeBSD.org> CommitDate: 2021-07-18 00:34:59 +0000 LinuxKPI: add net_ratelimit() Add a net_ratelimit() compat implementation based on ppsratecheck(). Add a sysctl to allow tuning of the number of messages. Sponsored by: The FreeBSD Foundation Reviewed by: hselasky Differential Revision: https://reviews.freebsd.org/D29399 (cherry picked from commit bc042266b2bfc3f52f685df7ccdd6e857b4b9da9) --- sys/compat/linuxkpi/common/include/linux/net.h | 10 ++++++++++ sys/compat/linuxkpi/common/src/linux_compat.c | 15 +++++++++++++++ 2 files changed, 25 insertions(+) diff --git a/sys/compat/linuxkpi/common/include/linux/net.h b/sys/compat/linuxkpi/common/include/linux/net.h index 282a45d2db32..5365cd0e9552 100644 --- a/sys/compat/linuxkpi/common/include/linux/net.h +++ b/sys/compat/linuxkpi/common/include/linux/net.h @@ -76,4 +76,14 @@ sock_release(struct socket *so) soclose(so); } + +int linuxkpi_net_ratelimit(void); + +static inline int +net_ratelimit(void) +{ + + return (linuxkpi_net_ratelimit()); +} + #endif /* _LINUX_NET_H_ */ diff --git a/sys/compat/linuxkpi/common/src/linux_compat.c b/sys/compat/linuxkpi/common/src/linux_compat.c index 4337f1f7bbd7..9dfa5446e0cc 100644 --- a/sys/compat/linuxkpi/common/src/linux_compat.c +++ b/sys/compat/linuxkpi/common/src/linux_compat.c @@ -51,6 +51,7 @@ __FBSDID("$FreeBSD$"); #include <sys/rwlock.h> #include <sys/mman.h> #include <sys/stack.h> +#include <sys/time.h> #include <sys/user.h> #include <vm/vm.h> @@ -99,6 +100,12 @@ int linuxkpi_debug; SYSCTL_INT(_compat_linuxkpi, OID_AUTO, debug, CTLFLAG_RWTUN, &linuxkpi_debug, 0, "Set to enable pr_debug() prints. Clear to disable."); +static struct timeval lkpi_net_lastlog; +static int lkpi_net_curpps; +static int lkpi_net_maxpps = 99; +SYSCTL_INT(_compat_linuxkpi, OID_AUTO, net_ratelimit, CTLFLAG_RWTUN, + &lkpi_net_maxpps, 0, "Limit number of LinuxKPI net messages per second."); + MALLOC_DEFINE(M_KMALLOC, "linux", "Linux kmalloc compat"); #include <linux/rbtree.h> @@ -2565,6 +2572,14 @@ linux_dump_stack(void) #endif } +int +linuxkpi_net_ratelimit(void) +{ + + return (ppsratecheck(&lkpi_net_lastlog, &lkpi_net_curpps, + lkpi_net_maxpps)); +} + #if defined(__i386__) || defined(__amd64__) bool linux_cpu_has_clflush; #endif
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