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Daniel P. Berrangé 837b87c4c5 net/stream: skip automatic zero-init of large array 
The 'net_stream_send' method has a 68k byte array used for copying
data between guest and host. Skip the automatic zero-init of this
array to eliminate the performance overhead in the I/O hot path.

The 'buf1' array will be fully initialized when reading data off
the network socket.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Klaus Jensen <k.jensen@samsung.com>
Reviewed-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Message-id: 20250610123709.835102-32-berrange@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2025-06-12 13:40:16 -04:00
..
can qom: Make InterfaceInfo[] uses const 2025-04-25 17:00:41 +02:00
af-xdp.c net/af-xdp.c: Don't leak sock_fds array in net_init_af_xdp() 2024-03-25 10:41:00 +00:00
announce.c qapi net: Elide redundant has_FOO in generated C 2022-12-14 20:04:47 +01:00
checksum.c net: checksum: Convert data to void * 2024-11-25 13:59:50 +08:00
clients.h net: add initial support for AF_XDP network backend 2023-09-18 14:36:13 +08:00
colo-compare.c qom: Make InterfaceInfo[] uses const 2025-04-25 17:00:41 +02:00
colo-compare.h Add the function of colo_compare_cleanup 2021-06-11 10:30:13 +08:00
colo-stubs.c colo: move stubs out of stubs/ 2024-04-18 11:17:27 +02:00
colo.c net/colo.c: Fix the pointer issue reported by Coverity. 2022-09-02 10:22:39 +08:00
colo.h net/colo.c: Fix the pointer issue reported by Coverity. 2022-09-02 10:22:39 +08:00
dgram.c win32: replace closesocket() with close() wrapper 2023-03-13 15:39:31 +04:00
dump.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
eth.c net/eth: Clean up local variable shadowing 2023-09-29 10:07:16 +02:00
filter-buffer.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
filter-mirror.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
filter-replay.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
filter-rewriter.c qom: Have class_init() take a const data argument 2025-04-25 17:00:41 +02:00
filter.c qom: Make InterfaceInfo[] uses const 2025-04-25 17:00:41 +02:00
hub.c include: Rename sysemu/ -> system/ 2024-12-20 17:44:56 +01:00
hub.h net: Remove deprecated [hub_id name] tuple of 'hostfwd_add' / 'hostfwd_remove' 2020-03-09 18:44:04 +00:00
l2tpv3.c net: Increase L2TPv3 buffer to fit jumboframes 2023-02-17 13:31:33 +08:00
meson.build net: fix build when libbpf is disabled, but libxdp is enabled 2024-10-28 14:37:25 +08:00
net-hmp-cmds.c qapi: Move include/qapi/qmp/ to include/qobject/ 2025-02-10 15:33:16 +01:00
net.c net: move backend cleanup to NIC cleanup 2025-03-10 17:07:16 +08:00
netmap.c tap: Remove qemu_using_vnet_hdr() 2024-06-04 15:14:25 +08:00
queue.c net: Remove deadcode 2024-10-03 17:26:05 +03:00
slirp.c qapi: Move include/qapi/qmp/ to include/qobject/ 2025-02-10 15:33:16 +01:00
socket.c net/socket: skip automatic zero-init of large array 2025-06-12 13:40:16 -04:00
stream.c net/stream: skip automatic zero-init of large array 2025-06-12 13:40:16 -04:00
tap-bsd.c tap: Remove tap_probe_vnet_hdr_len() 2024-06-04 15:14:25 +08:00
tap-linux.c tap-linux: Open ipvtap and macvtap 2025-03-10 17:07:16 +08:00
tap-linux.h tap: Add USO support to tap device. 2023-09-18 14:36:13 +08:00
tap-solaris.c tap: Remove tap_probe_vnet_hdr_len() 2024-06-04 15:14:25 +08:00
tap-stub.c tap: Remove tap_probe_vnet_hdr_len() 2024-06-04 15:14:25 +08:00
tap-win32.c net/tap-win32: Fix gcc 14 format truncation errors 2024-10-28 14:37:25 +08:00
tap.c include: Rename sysemu/ -> system/ 2024-12-20 17:44:56 +01:00
tap_int.h tap: Remove tap_probe_vnet_hdr_len() 2024-06-04 15:14:25 +08:00
trace-events vdpa: add trace event for vhost_vdpa_net_load_mq 2024-03-12 17:56:55 -04:00
trace.h trace: switch position of headers to what Meson requires 2020-08-21 06:18:24 -04:00
util.c net: Clean up includes 2016-02-04 17:41:30 +00:00
util.h Replace config-time define HOST_WORDS_BIGENDIAN 2022-04-06 10:50:37 +02:00
vde.c net: introduce qemu_set_info_str() function 2022-10-28 13:28:52 +08:00
vhost-user-stub.c vhost-net-user: add stubs for when no virtio-net device is present 2019-02-21 12:28:01 -05:00
vhost-user.c net: vhost-user: add QAPI events to report connection state 2025-02-21 07:21:25 -05:00
vhost-vdpa-stub.c vhost-net-vdpa: add stubs for when no virtio-net device is present 2022-07-20 16:58:08 +08:00
vhost-vdpa.c vdpa: move iova_tree allocation to net_vhost_vdpa_init 2025-06-02 14:29:15 -04:00
vmnet-bridged.m net/vmnet: Drop ifdef for macOS versions older than 12.0 2024-07-02 06:58:48 +02:00
vmnet-common.m error: Strip trailing '\n' from an error string argument 2025-03-19 07:53:26 +01:00
vmnet-host.c net/vmnet: Drop ifdef for macOS versions older than 12.0 2024-07-02 06:58:48 +02:00
vmnet-shared.c net/vmnet: Drop ifdef for macOS versions older than 12.0 2024-07-02 06:58:48 +02:00
vmnet_int.h vmnet: stop recieving events when VM is stopped 2023-02-17 13:31:33 +08:00