From be7c095ac99ad29fd72b780c7d58949a38656c66 Mon Sep 17 00:00:00 2001 From: Gleb Smirnoff Date: Fri, 1 Dec 2023 15:37:29 -0800 Subject: [PATCH] unix/dgram: bump maximum datagram size limit to 8k This is important for wpa_supplicant operation on a crowded network. Note: we actually need an API to increase maximum datagram size on a socket. Previously SO_SNDBUF magically acted like that, but that was an undocumented "feature". Also move the comment to the proper line. Previously it was the receive buffer that imposed the limit. Now notion of buffer size and maximum datagram are separate. Reviewed by: bz, tuexen, karels Differential Revision: https://reviews.freebsd.org/D42830 PR: 274990 --- sys/kern/uipc_usrreq.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/sys/kern/uipc_usrreq.c b/sys/kern/uipc_usrreq.c index 069294e1c963..8f5560e0f30b 100644 --- a/sys/kern/uipc_usrreq.c +++ b/sys/kern/uipc_usrreq.c @@ -154,8 +154,8 @@ static struct task unp_defer_task; #endif static u_long unpst_sendspace = PIPSIZ; static u_long unpst_recvspace = PIPSIZ; -static u_long unpdg_maxdgram = 2*1024; -static u_long unpdg_recvspace = 16*1024; /* support 8KB syslog msgs */ +static u_long unpdg_maxdgram = 8*1024; /* support 8KB syslog msgs */ +static u_long unpdg_recvspace = 16*1024; static u_long unpsp_sendspace = PIPSIZ; /* really max datagram size */ static u_long unpsp_recvspace = PIPSIZ;