git: 2f4e46dfdd71 - main - RACK, BBR: handle EACCES like EPERM for IP output handling

From: Michael Tuexen <tuexen_at_FreeBSD.org>
Date: Fri, 16 Feb 2024 11:25:24 UTC
The branch main has been updated by tuexen:

URL: https://cgit.FreeBSD.org/src/commit/?id=2f4e46dfdd710c6679f233480c9de430e6c4ef9b

commit 2f4e46dfdd710c6679f233480c9de430e6c4ef9b
Author:     Michael Tuexen <tuexen@FreeBSD.org>
AuthorDate: 2024-02-16 11:19:24 +0000
Commit:     Michael Tuexen <tuexen@FreeBSD.org>
CommitDate: 2024-02-16 11:19:24 +0000

    RACK, BBR: handle EACCES like EPERM for IP output handling
    
    The FreeBSD TCP base stack handles them also the same way.
    In case of packet filters dropping packets in the output path,
    this avoids retranmitting the dropped packet every 10ms or so.
    
    Reviewed by:            rscheff
    MFC after:              1 week
    Sponsored by:           Netflix, Inc.
    Differential Revision:  https://reviews.freebsd.org/D43773
---
 sys/netinet/tcp_stacks/bbr.c  | 1 +
 sys/netinet/tcp_stacks/rack.c | 1 +
 2 files changed, 2 insertions(+)

diff --git a/sys/netinet/tcp_stacks/bbr.c b/sys/netinet/tcp_stacks/bbr.c
index c643f0321099..931beba7a262 100644
--- a/sys/netinet/tcp_stacks/bbr.c
+++ b/sys/netinet/tcp_stacks/bbr.c
@@ -13809,6 +13809,7 @@ nomore:
 				return (error);
 			}
 		case EPERM:
+		case EACCES:
 			tp->t_softerror = error;
 			/* FALLTHROUGH */
 		case EHOSTDOWN:
diff --git a/sys/netinet/tcp_stacks/rack.c b/sys/netinet/tcp_stacks/rack.c
index 0ec50bb5e5c5..49d946dbb63b 100644
--- a/sys/netinet/tcp_stacks/rack.c
+++ b/sys/netinet/tcp_stacks/rack.c
@@ -22376,6 +22376,7 @@ nomore:
 		sendalot = 0;
 		switch (error) {
 		case EPERM:
+		case EACCES:
 			tp->t_softerror = error;
 #ifdef TCP_ACCOUNTING
 			crtsc = get_cyclecount();