The branch main has been updated by imp: URL: https://cgit.FreeBSD.org/src/commit/?id=674956e1997954e8478e68080061c0530b081515
commit 674956e1997954e8478e68080061c0530b081515 Author: Henrich Hartzer <[email protected]> AuthorDate: 2024-04-10 21:53:02 +0000 Commit: Warner Losh <[email protected]> CommitDate: 2024-05-23 21:10:09 +0000 sys/netinet/cc: Switch from deprecated random() to prng32() Related: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=277655 Signed-off-by: [email protected] Reviewed by: imp, mav Pull Request: https://github.com/freebsd/freebsd-src/pull/1162 --- sys/netinet/cc/cc_cdg.c | 8 +++++--- sys/netinet/cc/cc_chd.c | 9 +++++---- sys/netinet/cc/cc_hd.c | 7 ++++--- 3 files changed, 14 insertions(+), 10 deletions(-) diff --git a/sys/netinet/cc/cc_cdg.c b/sys/netinet/cc/cc_cdg.c index 1e9236f878d4..7ec9e8ca3ccc 100644 --- a/sys/netinet/cc/cc_cdg.c +++ b/sys/netinet/cc/cc_cdg.c @@ -57,6 +57,7 @@ #include <sys/malloc.h> #include <sys/module.h> #include <sys/queue.h> +#include <sys/prng.h> #include <sys/socket.h> #include <sys/socketvar.h> #include <sys/sysctl.h> @@ -507,7 +508,8 @@ cdg_cong_signal(struct cc_var *ccv, ccsignal_t signal_type) static inline int prob_backoff(long qtrend) { - int backoff, idx, p; + int backoff, idx; + uint32_t p; backoff = (qtrend > ((MAXGRAD * V_cdg_exp_backoff_scale) << D_P_E)); @@ -519,8 +521,8 @@ prob_backoff(long qtrend) idx = qtrend; /* Backoff probability proportional to rate of queue growth. */ - p = (INT_MAX / (1 << EXP_PREC)) * probexp[idx]; - backoff = (random() < p); + p = (UINT32_MAX / (1 << EXP_PREC)) * probexp[idx]; + backoff = (prng32() < p); } return (backoff); diff --git a/sys/netinet/cc/cc_chd.c b/sys/netinet/cc/cc_chd.c index 52048a7c05ae..92fcf68c41f1 100644 --- a/sys/netinet/cc/cc_chd.c +++ b/sys/netinet/cc/cc_chd.c @@ -58,6 +58,7 @@ #include <sys/limits.h> #include <sys/malloc.h> #include <sys/module.h> +#include <sys/prng.h> #include <sys/queue.h> #include <sys/socket.h> #include <sys/socketvar.h> @@ -85,8 +86,8 @@ */ #define CC_CHD_DELAY 0x02000000 -/* Largest possible number returned by random(). */ -#define RANDOM_MAX INT_MAX +/* Largest possible number returned by prng32(). */ +#define RANDOM_MAX UINT32_MAX static void chd_ack_received(struct cc_var *ccv, ccsignal_t ack_type); static void chd_cb_destroy(struct cc_var *ccv); @@ -159,9 +160,9 @@ chd_window_decrease(struct cc_var *ccv) static __inline int should_backoff(int qdly, int maxqdly, struct chd *chd_data) { - unsigned long p, rand; + uint32_t rand, p; - rand = random(); + rand = prng32(); if (qdly < V_chd_qthresh) { chd_data->loss_compete = 0; diff --git a/sys/netinet/cc/cc_hd.c b/sys/netinet/cc/cc_hd.c index 82486563f97e..def1580d8ffb 100644 --- a/sys/netinet/cc/cc_hd.c +++ b/sys/netinet/cc/cc_hd.c @@ -59,6 +59,7 @@ #include <sys/limits.h> #include <sys/malloc.h> #include <sys/module.h> +#include <sys/prng.h> #include <sys/queue.h> #include <sys/socket.h> #include <sys/socketvar.h> @@ -77,8 +78,8 @@ #include <netinet/khelp/h_ertt.h> -/* Largest possible number returned by random(). */ -#define RANDOM_MAX INT_MAX +/* Largest possible number returned by prng32(). */ +#define RANDOM_MAX UINT32_MAX static void hd_ack_received(struct cc_var *ccv, ccsignal_t ack_type); static int hd_mod_init(void); @@ -128,7 +129,7 @@ should_backoff(int qdly, int maxqdly) p = (RANDOM_MAX / 100) * V_hd_pmax; } - return (random() < p); + return (prng32() < p); } /*
