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qemu-patch-raspberry4/slirp
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Kevin Cernekee e2aad34d73 slirp: Fix intermittent send queue hangs on a socket 
if_output() originally sent one mbuf per call and used the slirp->next_m
variable to keep track of where it left off.  But nowadays it tries to
send all of the mbufs from the fastq, and one mbuf from each session on
the batchq.  The next_m variable is both redundant and harmful: there is
a case[0] involving delayed packets in which next_m ends up pointing
to &slirp->if_batchq when an active session still exists, and this
blocks all traffic for that session until qemu is restarted.

The test case was created to reproduce a problem that was seen on
long-running Chromium OS VM tests[1] which rapidly create and
destroy ssh connections through hostfwd.

[0] https://pastebin.com/NNy6LreF
[1] https://bugs.chromium.org/p/chromium/issues/detail?id=766323

Signed-off-by: Kevin Cernekee <cernekee@chromium.org>
Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
2017-09-24 20:04:09 +02:00
..
arp_table.c slirp: Clean up includes 2016-02-04 17:41:30 +00:00
bootp.c slirp: check len against dhcp options array end 2017-08-03 00:26:44 +02:00
bootp.h Clean up decorations and whitespace around header guards 2016-07-12 16:20:46 +02:00
cksum.c Use #include "..." for our own headers, <...> for others 2016-07-12 16:19:16 +02:00
COPYRIGHT Remove the advertising clause from the slirp license 2009-01-26 19:37:41 +00:00
debug.h slirp: Cleanup and basic reanimation of debug code 2009-06-29 08:52:46 -05:00
dhcpv6.c slirp, disas: Replace min/max with MIN/MAX macros 2016-12-20 23:55:19 +01:00
dhcpv6.h slirp: Add support for stateless DHCPv6 2016-07-03 23:59:42 +02:00
dnssearch.c slirp: Use DIV_ROUND_UP 2016-06-07 18:19:25 +03:00
if.c slirp: Fix intermittent send queue hangs on a socket 2017-09-24 20:04:09 +02:00
if.h Clean up ill-advised or unusual header guards 2016-07-12 16:20:46 +02:00
ip.h Clean up ill-advised or unusual header guards 2016-07-12 16:20:46 +02:00
ip6.h slirp: use DIV_ROUND_UP 2017-07-15 14:28:25 +02:00
ip6_icmp.c slirp: Send RDNSS in RA only if host has an IPv6 DNS server 2017-03-29 00:51:25 +02:00
ip6_icmp.h Clean up header guards that don't match their file name 2016-07-12 16:19:16 +02:00
ip6_input.c slirp: Allow disabling IPv4 or IPv6 2016-04-01 17:51:55 +02:00
ip6_output.c slirp: Adding IPv6, ICMPv6 Echo and NDP autoconfiguration 2016-03-15 10:35:00 +01:00
ip_icmp.c slirp: fix pinging the virtual ipv4 DNS server 2017-04-29 18:29:58 +02:00
ip_icmp.h Clean up ill-advised or unusual header guards 2016-07-12 16:20:46 +02:00
ip_input.c Use #include "..." for our own headers, <...> for others 2016-07-12 16:19:16 +02:00
ip_output.c Use #include "..." for our own headers, <...> for others 2016-07-12 16:19:16 +02:00
libslirp.h Clean up ill-advised or unusual header guards 2016-07-12 16:20:46 +02:00
main.h Clean up decorations and whitespace around header guards 2016-07-12 16:20:46 +02:00
Makefile.objs slirp: add a fake NC-SI backend 2017-04-25 19:17:25 +08:00
mbuf.c slirp: Convert mbufs to use g_malloc() and g_free() 2017-02-26 15:39:05 +01:00
mbuf.h Clean up ill-advised or unusual header guards 2016-07-12 16:20:46 +02:00
misc.c slirp: fork_exec(): Don't close() a negative number in fork_exec() 2017-07-15 14:28:25 +02:00
misc.h Clean up ill-advised or unusual header guards 2016-07-12 16:20:46 +02:00
ncsi-pkt.h slirp: add a fake NC-SI backend 2017-04-25 19:17:25 +08:00
ncsi.c slirp: add a fake NC-SI backend 2017-04-25 19:17:25 +08:00
ndp_table.c slirp: Adding IPv6, ICMPv6 Echo and NDP autoconfiguration 2016-03-15 10:35:00 +01:00
sbuf.c slirp: Handle error returns from sosendoob() 2017-07-15 14:28:25 +02:00
sbuf.h slirp: VMStatify sbuf 2017-04-29 18:44:16 +02:00
slirp.c migration: Split registration functions from vmstate.h 2017-06-13 11:00:44 +02:00
slirp.h slirp: Fix intermittent send queue hangs on a socket 2017-09-24 20:04:09 +02:00
slirp_config.h slirp: Remove obsolete backward-compatibility cruft 2016-05-16 20:58:47 +02:00
socket.c slirp: fix clearing ifq_so from pending packets 2017-08-30 23:14:34 +01:00
socket.h slirp: VMStatify socket level 2017-04-29 18:44:16 +02:00
tcp.h Clean up ill-advised or unusual header guards 2016-07-12 16:20:46 +02:00
tcp_input.c slirp: Fix wrong mss bug. 2017-05-27 23:34:47 +02:00
tcp_output.c slirp, disas: Replace min/max with MIN/MAX macros 2016-12-20 23:55:19 +01:00
tcp_subr.c Fix total IP header length in forwarded TCP packets 2017-05-27 23:35:00 +02:00
tcp_timer.c slirp, disas: Replace min/max with MIN/MAX macros 2016-12-20 23:55:19 +01:00
tcp_timer.h Clean up ill-advised or unusual header guards 2016-07-12 16:20:46 +02:00
tcp_var.h slirp: VMState conversion; tcpcb 2017-04-29 18:44:16 +02:00
tcpip.h slirp, disas: Replace min/max with MIN/MAX macros 2016-12-20 23:55:19 +01:00
tftp.c slirp: tftp, copy sockaddr_size 2017-04-29 18:29:58 +02:00
tftp.h slirp: support dynamic block size for TFTP transfers 2016-12-21 00:02:15 +01:00
udp.c slirp: Check qemu_socket() return value in udp_listen() 2017-02-26 15:38:38 +01:00
udp.h Clean up ill-advised or unusual header guards 2016-07-12 16:20:46 +02:00
udp6.c slirp: Add support for stateless DHCPv6 2016-07-03 23:59:42 +02:00