From: Nick Porter <nick@portercomputing.co.uk>
Date: Wed, 6 Aug 2025 14:53:13 +0000 (+0100)
Subject: Split the restricted source port range per thread
X-Git-Url: http://git.ipfire.org/gitweb/gitweb.cgi?a=commitdiff_plain;h=6c31ae8786e1e563d8938070178ce1545f261783;p=thirdparty%2Ffreeradius-server.git

Split the restricted source port range per thread
---

diff --git a/src/modules/rlm_radius/bio.c b/src/modules/rlm_radius/bio.c
index c9c6c4654e..29050b68a6 100644
--- a/src/modules/rlm_radius/bio.c
+++ b/src/modules/rlm_radius/bio.c
@@ -2634,6 +2634,15 @@ static int mod_thread_instantiate(module_thread_inst_ctx_t const *mctx)
 	case RLM_RADIUS_MODE_XLAT_PROXY:
 		fr_rb_expire_inline_talloc_init(&thread->bio.expires, home_server_t, expire, home_server_cmp, home_server_free,
 						inst->home_server_lifetime);
+		/*
+		 *	Assign each thread a portion of the available source port range.
+		 */
+		if (thread->ctx.fd_config.src_port_start) {
+			uint16_t	range = inst->fd_config.src_port_end - inst->fd_config.src_port_start + 1;
+			uint16_t	block = range / main_config->max_workers;
+			thread->ctx.fd_config.src_port_start = inst->fd_config.src_port_start + (block * fr_schedule_worker_id());
+			thread->ctx.fd_config.src_port_end = inst->fd_config.src_port_start + (block * (fr_schedule_worker_id() +1)) - 1;
+		}
 		FALL_THROUGH;
 
 	default: