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| author | Bjoern A. Zeeb <bz@FreeBSD.org> | 2021-03-23 17:00:22 +0000 |
|---|---|---|
| committer | Bjoern A. Zeeb <bz@FreeBSD.org> | 2021-07-18 00:34:59 +0000 |
| commit | 834afdc9242db433def9f5aad2a75dc2f558142c (patch) | |
| tree | fe4039f978975b7a1cf1991301739895b9cce3e8 | |
| parent | f81b4f3be750012f5ede7c4d0b71b3f457eb8e7d (diff) | |
| download | src-834afdc9242db433def9f5aad2a75dc2f558142c.tar.gz src-834afdc9242db433def9f5aad2a75dc2f558142c.zip | |
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)
| -rw-r--r-- | sys/compat/linuxkpi/common/include/linux/net.h | 10 | ||||
| -rw-r--r-- | sys/compat/linuxkpi/common/src/linux_compat.c | 15 |
2 files changed, 25 insertions, 0 deletions
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 |