[PULL 0/7] Net patches
[PULL 0/8] Net patches
1
The following changes since commit 92f8c6fef13b31ba222c4d20ad8afd2b79c4c28e:
1
The following changes since commit 48033ad678ae2def43bf0d543a2c4c3d2a93feaf:
2
2
3
Merge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20210525' into staging (2021-05-25 16:17:06 +0100)
3
Merge remote-tracking branch 'remotes/vsementsov/tags/pull-nbd-2022-02-09-v2' into staging (2022-02-12 22:04:07 +0000)
4
4
5
are available in the git repository at:
5
are available in the git repository at:
6
6
7
https://github.com/jasowang/qemu.git tags/net-pull-request
7
https://github.com/jasowang/qemu.git tags/net-pull-request
8
8
9
for you to fetch changes up to 90322e646e87c1440661cb3ddbc0cc94309d8a4f:
9
for you to fetch changes up to 9d6267b240c114d1a3cd314a08fd6e1339d34b83:
10
10
11
MAINTAINERS: Added eBPF maintainers information. (2021-06-04 15:25:46 +0800)
11
net/eth: Don't consider ESP to be an IPv6 option header (2022-02-14 11:50:44 +0800)
12
12
13
----------------------------------------------------------------
13
----------------------------------------------------------------
14
14
15
----------------------------------------------------------------
15
----------------------------------------------------------------
16
Andrew Melnychenko (7):
16
Nick Hudson (1):
17
net/tap: Added TUNSETSTEERINGEBPF code.
17
hw/net: e1000e: Clear ICR on read when using non MSI-X interrupts
18
net: Added SetSteeringEBPF method for NetClientState.
19
ebpf: Added eBPF RSS program.
20
ebpf: Added eBPF RSS loader.
21
virtio-net: Added eBPF RSS to virtio-net.
22
docs: Added eBPF documentation.
23
MAINTAINERS: Added eBPF maintainers information.
24
18
25
MAINTAINERS | 8 +
19
Peter Foley (2):
26
configure | 8 +-
20
net/tap: Set return code on failure
27
docs/devel/ebpf_rss.rst | 125 +++++++++
21
net: Fix uninitialized data usage
28
docs/devel/index.rst | 1 +
22
29
ebpf/ebpf_rss-stub.c | 40 +++
23
Philippe Mathieu-Daudé (1):
30
ebpf/ebpf_rss.c | 165 ++++++++++++
24
hw/net/vmxnet3: Log guest-triggerable errors using LOG_GUEST_ERROR
31
ebpf/ebpf_rss.h | 44 ++++
25
32
ebpf/meson.build | 1 +
26
Rao Lei (1):
33
ebpf/rss.bpf.skeleton.h | 431 +++++++++++++++++++++++++++++++
27
net/filter: Optimize filter_send to coroutine
34
ebpf/trace-events | 4 +
28
35
ebpf/trace.h | 1 +
29
Thomas Jansen (1):
36
hw/net/vhost_net.c | 3 +
30
net/eth: Don't consider ESP to be an IPv6 option header
37
hw/net/virtio-net.c | 116 ++++++++-
31
38
include/hw/virtio/virtio-net.h | 4 +
32
Zhang Chen (2):
39
include/net/net.h | 2 +
33
net/colo-compare.c: Optimize compare order for performance
40
meson.build | 23 ++
34
net/colo-compare.c: Update the default value comments
41
meson_options.txt | 2 +
35
42
net/tap-bsd.c | 5 +
36
hw/net/e1000e_core.c | 5 ++++
43
net/tap-linux.c | 13 +
37
hw/net/trace-events | 1 +
44
net/tap-linux.h | 1 +
38
hw/net/vmxnet3.c | 4 +++-
45
net/tap-solaris.c | 5 +
39
net/colo-compare.c | 28 +++++++++++-----------
46
net/tap-stub.c | 5 +
40
net/eth.c | 1 -
47
net/tap.c | 9 +
41
net/filter-mirror.c | 66 +++++++++++++++++++++++++++++++++++++++++-----------
48
net/tap_int.h | 1 +
42
net/tap-linux.c | 1 +
49
net/vhost-vdpa.c | 2 +
43
net/tap.c | 1 +
50
tools/ebpf/Makefile.ebpf | 21 ++
44
8 files changed, 78 insertions(+), 29 deletions(-)
51
tools/ebpf/rss.bpf.c | 571 +++++++++++++++++++++++++++++++++++++++++
52
27 files changed, 1607 insertions(+), 4 deletions(-)
53
create mode 100644 docs/devel/ebpf_rss.rst
54
create mode 100644 ebpf/ebpf_rss-stub.c
55
create mode 100644 ebpf/ebpf_rss.c
56
create mode 100644 ebpf/ebpf_rss.h
57
create mode 100644 ebpf/meson.build
58
create mode 100644 ebpf/rss.bpf.skeleton.h
59
create mode 100644 ebpf/trace-events
60
create mode 100644 ebpf/trace.h
61
create mode 100755 tools/ebpf/Makefile.ebpf
62
create mode 100644 tools/ebpf/rss.bpf.c
63
45
64
46
diff view generated by jsdifflib
New patch
[PULL 1/8] hw/net/vmxnet3: Log guest-triggerable errors using LOG_GUEST_ERROR
1
From: Philippe Mathieu-Daudé <philmd@redhat.com>
1
2
3
The "Interrupt Cause" register (VMXNET3_REG_ICR) is read-only.
4
Write accesses are ignored. Log them with as LOG_GUEST_ERROR
5
instead of aborting:
6
7
[R +0.239743] writeq 0xe0002031 0x46291a5a55460800
8
ERROR:hw/net/vmxnet3.c:1819:vmxnet3_io_bar1_write: code should not be reached
9
Thread 1 "qemu-system-i38" received signal SIGABRT, Aborted.
10
(gdb) bt
11
#3 0x74c397d3 in __GI_abort () at abort.c:79
12
#4 0x76d3cd4c in g_assertion_message (domain=<optimized out>, file=<optimized out>, line=<optimized out>, func=<optimized out>, message=<optimized out>) at ../glib/gtestutils.c:3223
13
#5 0x76d9d45f in g_assertion_message_expr
14
(domain=0x0, file=0x59fc2e53 "hw/net/vmxnet3.c", line=1819, func=0x59fc11e0 <__func__.vmxnet3_io_bar1_write> "vmxnet3_io_bar1_write", expr=<optimized out>)
15
at ../glib/gtestutils.c:3249
16
#6 0x57e80a3a in vmxnet3_io_bar1_write (opaque=0x62814100, addr=56, val=70, size=4) at hw/net/vmxnet3.c:1819
17
#7 0x58c2d894 in memory_region_write_accessor (mr=0x62816b90, addr=56, value=0x7fff9450, size=4, shift=0, mask=4294967295, attrs=...) at softmmu/memory.c:492
18
#8 0x58c2d1d2 in access_with_adjusted_size (addr=56, value=0x7fff9450, size=1, access_size_min=4, access_size_max=4, access_fn=
19
0x58c2d290 <memory_region_write_accessor>, mr=0x62816b90, attrs=...) at softmmu/memory.c:554
20
#9 0x58c2bae7 in memory_region_dispatch_write (mr=0x62816b90, addr=56, data=70, op=MO_8, attrs=...) at softmmu/memory.c:1504
21
#10 0x58bfd034 in flatview_write_continue (fv=0x606000181700, addr=0xe0002038, attrs=..., ptr=0x7fffb9e0, len=1, addr1=56, l=1, mr=0x62816b90)
22
at softmmu/physmem.c:2782
23
#11 0x58beba00 in flatview_write (fv=0x606000181700, addr=0xe0002031, attrs=..., buf=0x7fffb9e0, len=8) at softmmu/physmem.c:2822
24
#12 0x58beb589 in address_space_write (as=0x608000015f20, addr=0xe0002031, attrs=..., buf=0x7fffb9e0, len=8) at softmmu/physmem.c:2914
25
26
Reported-by: Dike <dike199774@qq.com>
27
Reported-by: Duhao <504224090@qq.com>
28
BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=2032932
29
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
30
Signed-off-by: Jason Wang <jasowang@redhat.com>
31
---
32
hw/net/vmxnet3.c | 4 +++-
33
1 file changed, 3 insertions(+), 1 deletion(-)
34
35
diff --git a/hw/net/vmxnet3.c b/hw/net/vmxnet3.c
36
index XXXXXXX..XXXXXXX 100644
37
--- a/hw/net/vmxnet3.c
38
+++ b/hw/net/vmxnet3.c
39
@@ -XXX,XX +XXX,XX @@ vmxnet3_io_bar1_write(void *opaque,
40
case VMXNET3_REG_ICR:
41
VMW_CBPRN("Write BAR1 [VMXNET3_REG_ICR] = %" PRIx64 ", size %d",
42
val, size);
43
- g_assert_not_reached();
44
+ qemu_log_mask(LOG_GUEST_ERROR,
45
+ "%s: write to read-only register VMXNET3_REG_ICR\n",
46
+ TYPE_VMXNET3);
47
break;
48
49
/* Event Cause Register */
50
--
51
2.7.4
52
53
diff view generated by jsdifflib
[PULL 7/7] MAINTAINERS: Added eBPF maintainers information.
[PULL 2/8] net/tap: Set return code on failure
1
From: Andrew Melnychenko <andrew@daynix.com>
1
From: Peter Foley <pefoley@google.com>
2
2
3
Signed-off-by: Yuri Benditovich <yuri.benditovich@daynix.com>
3
Match the other error handling in this function.
4
Signed-off-by: Andrew Melnychenko <andrew@daynix.com>
4
5
Fixes: e7b347d0bf6 ("net: detect errors from probing vnet hdr flag for TAP devices")
6
7
Reviewed-by: Patrick Venture <venture@google.com>
8
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
9
Signed-off-by: Peter Foley <pefoley@google.com>
5
Signed-off-by: Jason Wang <jasowang@redhat.com>
10
Signed-off-by: Jason Wang <jasowang@redhat.com>
6
---
11
---
7
MAINTAINERS | 8 ++++++++
12
net/tap.c | 1 +
8
1 file changed, 8 insertions(+)
13
1 file changed, 1 insertion(+)
9
14
10
diff --git a/MAINTAINERS b/MAINTAINERS
15
diff --git a/net/tap.c b/net/tap.c
11
index XXXXXXX..XXXXXXX 100644
16
index XXXXXXX..XXXXXXX 100644
12
--- a/MAINTAINERS
17
--- a/net/tap.c
13
+++ b/MAINTAINERS
18
+++ b/net/tap.c
14
@@ -XXX,XX +XXX,XX @@ F: include/hw/remote/proxy-memory-listener.h
19
@@ -XXX,XX +XXX,XX @@ int net_init_tap(const Netdev *netdev, const char *name,
15
F: hw/remote/iohub.c
20
if (i == 0) {
16
F: include/hw/remote/iohub.h
21
vnet_hdr = tap_probe_vnet_hdr(fd, errp);
17
22
if (vnet_hdr < 0) {
18
+EBPF:
23
+ ret = -1;
19
+M: Jason Wang <jasowang@redhat.com>
24
goto free_fail;
20
+R: Andrew Melnychenko <andrew@daynix.com>
25
}
21
+R: Yuri Benditovich <yuri.benditovich@daynix.com>
26
} else if (vnet_hdr != tap_probe_vnet_hdr(fd, NULL)) {
22
+S: Maintained
23
+F: ebpf/*
24
+F: tools/ebpf/*
25
+
26
Build and test automation
27
-------------------------
28
Build and test automation, general continuous integration
29
--
27
--
30
2.7.4
28
2.7.4
31
29
32
30
diff view generated by jsdifflib
[PULL 2/7] net: Added SetSteeringEBPF method for NetClientState.
[PULL 3/8] net: Fix uninitialized data usage
1
From: Andrew Melnychenko <andrew@daynix.com>
1
From: Peter Foley <pefoley@google.com>
2
2
3
For now, that method supported only by Linux TAP.
3
e.g.
4
Linux TAP uses TUNSETSTEERINGEBPF ioctl.
4
1109 15:16:20.151506 Uninitialized bytes in ioctl_common_pre at offset 0 inside [0x7ffc516af9b8, 4)
5
1109 15:16:20.151659 ==588974==WARNING: MemorySanitizer: use-of-uninitialized-value
6
1109 15:16:20.312923 #0 0x5639b88acb21 in tap_probe_vnet_hdr_len third_party/qemu/net/tap-linux.c:183:9
7
1109 15:16:20.312952 #1 0x5639b88afd66 in net_tap_fd_init third_party/qemu/net/tap.c:409:9
8
1109 15:16:20.312954 #2 0x5639b88b2d1b in net_init_tap_one third_party/qemu/net/tap.c:681:19
9
1109 15:16:20.312956 #3 0x5639b88b16a8 in net_init_tap third_party/qemu/net/tap.c:912:13
10
1109 15:16:20.312957 #4 0x5639b8890175 in net_client_init1 third_party/qemu/net/net.c:1110:9
11
1109 15:16:20.312958 #5 0x5639b888f912 in net_client_init third_party/qemu/net/net.c:1208:15
12
1109 15:16:20.312960 #6 0x5639b8894aa5 in net_param_nic third_party/qemu/net/net.c:1588:11
13
1109 15:16:20.312961 #7 0x5639b900cd18 in qemu_opts_foreach third_party/qemu/util/qemu-option.c:1135:14
14
1109 15:16:20.312962 #8 0x5639b889393c in net_init_clients third_party/qemu/net/net.c:1612:9
15
1109 15:16:20.312964 #9 0x5639b717aaf3 in qemu_create_late_backends third_party/qemu/softmmu/vl.c:1962:5
16
1109 15:16:20.312965 #10 0x5639b717aaf3 in qemu_init third_party/qemu/softmmu/vl.c:3694:5
17
1109 15:16:20.312967 #11 0x5639b71083b8 in main third_party/qemu/softmmu/main.c:49:5
18
1109 15:16:20.312968 #12 0x7f464de1d8d2 in __libc_start_main (/usr/grte/v5/lib64/libc.so.6+0x628d2)
19
1109 15:16:20.312969 #13 0x5639b6bbd389 in _start /usr/grte/v5/debug-src/src/csu/../sysdeps/x86_64/start.S:120
20
1109 15:16:20.312970
21
1109 15:16:20.312975 Uninitialized value was stored to memory at
22
1109 15:16:20.313393 #0 0x5639b88acbee in tap_probe_vnet_hdr_len third_party/qemu/net/tap-linux.c
23
1109 15:16:20.313396 #1 0x5639b88afd66 in net_tap_fd_init third_party/qemu/net/tap.c:409:9
24
1109 15:16:20.313398 #2 0x5639b88b2d1b in net_init_tap_one third_party/qemu/net/tap.c:681:19
25
1109 15:16:20.313399 #3 0x5639b88b16a8 in net_init_tap third_party/qemu/net/tap.c:912:13
26
1109 15:16:20.313400 #4 0x5639b8890175 in net_client_init1 third_party/qemu/net/net.c:1110:9
27
1109 15:16:20.313401 #5 0x5639b888f912 in net_client_init third_party/qemu/net/net.c:1208:15
28
1109 15:16:20.313403 #6 0x5639b8894aa5 in net_param_nic third_party/qemu/net/net.c:1588:11
29
1109 15:16:20.313404 #7 0x5639b900cd18 in qemu_opts_foreach third_party/qemu/util/qemu-option.c:1135:14
30
1109 15:16:20.313405 #8 0x5639b889393c in net_init_clients third_party/qemu/net/net.c:1612:9
31
1109 15:16:20.313407 #9 0x5639b717aaf3 in qemu_create_late_backends third_party/qemu/softmmu/vl.c:1962:5
32
1109 15:16:20.313408 #10 0x5639b717aaf3 in qemu_init third_party/qemu/softmmu/vl.c:3694:5
33
1109 15:16:20.313409 #11 0x5639b71083b8 in main third_party/qemu/softmmu/main.c:49:5
34
1109 15:16:20.313410 #12 0x7f464de1d8d2 in __libc_start_main (/usr/grte/v5/lib64/libc.so.6+0x628d2)
35
1109 15:16:20.313412 #13 0x5639b6bbd389 in _start /usr/grte/v5/debug-src/src/csu/../sysdeps/x86_64/start.S:120
36
1109 15:16:20.313413
37
1109 15:16:20.313417 Uninitialized value was stored to memory at
38
1109 15:16:20.313791 #0 0x5639b88affbd in net_tap_fd_init third_party/qemu/net/tap.c:400:26
39
1109 15:16:20.313826 #1 0x5639b88b2d1b in net_init_tap_one third_party/qemu/net/tap.c:681:19
40
1109 15:16:20.313829 #2 0x5639b88b16a8 in net_init_tap third_party/qemu/net/tap.c:912:13
41
1109 15:16:20.313831 #3 0x5639b8890175 in net_client_init1 third_party/qemu/net/net.c:1110:9
42
1109 15:16:20.313836 #4 0x5639b888f912 in net_client_init third_party/qemu/net/net.c:1208:15
43
1109 15:16:20.313838 #5 0x5639b8894aa5 in net_param_nic third_party/qemu/net/net.c:1588:11
44
1109 15:16:20.313839 #6 0x5639b900cd18 in qemu_opts_foreach third_party/qemu/util/qemu-option.c:1135:14
45
1109 15:16:20.313841 #7 0x5639b889393c in net_init_clients third_party/qemu/net/net.c:1612:9
46
1109 15:16:20.313843 #8 0x5639b717aaf3 in qemu_create_late_backends third_party/qemu/softmmu/vl.c:1962:5
47
1109 15:16:20.313844 #9 0x5639b717aaf3 in qemu_init third_party/qemu/softmmu/vl.c:3694:5
48
1109 15:16:20.313845 #10 0x5639b71083b8 in main third_party/qemu/softmmu/main.c:49:5
49
1109 15:16:20.313846 #11 0x7f464de1d8d2 in __libc_start_main (/usr/grte/v5/lib64/libc.so.6+0x628d2)
50
1109 15:16:20.313847 #12 0x5639b6bbd389 in _start /usr/grte/v5/debug-src/src/csu/../sysdeps/x86_64/start.S:120
51
1109 15:16:20.313849
52
1109 15:16:20.313851 Uninitialized value was created by an allocation of 'ifr' in the stack frame of function 'tap_probe_vnet_hdr'
53
1109 15:16:20.313855 #0 0x5639b88ac680 in tap_probe_vnet_hdr third_party/qemu/net/tap-linux.c:151
54
1109 15:16:20.313856
55
1109 15:16:20.313878 SUMMARY: MemorySanitizer: use-of-uninitialized-value third_party/qemu/net/tap-linux.c:183:9 in tap_probe_vnet_hdr_len
5
56
6
Signed-off-by: Andrew Melnychenko <andrew@daynix.com>
57
Fixes: dc69004c7d8 ("net: move tap_probe_vnet_hdr() to tap-linux.c")
58
Reviewed-by: Hao Wu <wuhaotsh@google.com>
59
Reviewed-by: Patrick Venture <venture@google.com>
60
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
61
Signed-off-by: Peter Foley <pefoley@google.com>
7
Signed-off-by: Jason Wang <jasowang@redhat.com>
62
Signed-off-by: Jason Wang <jasowang@redhat.com>
8
---
63
---
9
include/net/net.h | 2 ++
64
net/tap-linux.c | 1 +
10
net/tap-bsd.c | 5 +++++
65
1 file changed, 1 insertion(+)
11
net/tap-linux.c | 13 +++++++++++++
12
net/tap-solaris.c | 5 +++++
13
net/tap-stub.c | 5 +++++
14
net/tap.c | 9 +++++++++
15
net/tap_int.h | 1 +
16
7 files changed, 40 insertions(+)
17
66
18
diff --git a/include/net/net.h b/include/net/net.h
19
index XXXXXXX..XXXXXXX 100644
20
--- a/include/net/net.h
21
+++ b/include/net/net.h
22
@@ -XXX,XX +XXX,XX @@ typedef int (SetVnetBE)(NetClientState *, bool);
23
typedef struct SocketReadState SocketReadState;
24
typedef void (SocketReadStateFinalize)(SocketReadState *rs);
25
typedef void (NetAnnounce)(NetClientState *);
26
+typedef bool (SetSteeringEBPF)(NetClientState *, int);
27
28
typedef struct NetClientInfo {
29
NetClientDriver type;
30
@@ -XXX,XX +XXX,XX @@ typedef struct NetClientInfo {
31
SetVnetLE *set_vnet_le;
32
SetVnetBE *set_vnet_be;
33
NetAnnounce *announce;
34
+ SetSteeringEBPF *set_steering_ebpf;
35
} NetClientInfo;
36
37
struct NetClientState {
38
diff --git a/net/tap-bsd.c b/net/tap-bsd.c
39
index XXXXXXX..XXXXXXX 100644
40
--- a/net/tap-bsd.c
41
+++ b/net/tap-bsd.c
42
@@ -XXX,XX +XXX,XX @@ int tap_fd_get_ifname(int fd, char *ifname)
43
{
44
return -1;
45
}
46
+
47
+int tap_fd_set_steering_ebpf(int fd, int prog_fd)
48
+{
49
+ return -1;
50
+}
51
diff --git a/net/tap-linux.c b/net/tap-linux.c
67
diff --git a/net/tap-linux.c b/net/tap-linux.c
52
index XXXXXXX..XXXXXXX 100644
68
index XXXXXXX..XXXXXXX 100644
53
--- a/net/tap-linux.c
69
--- a/net/tap-linux.c
54
+++ b/net/tap-linux.c
70
+++ b/net/tap-linux.c
55
@@ -XXX,XX +XXX,XX @@ int tap_fd_get_ifname(int fd, char *ifname)
71
@@ -XXX,XX +XXX,XX @@ void tap_set_sndbuf(int fd, const NetdevTapOptions *tap, Error **errp)
56
pstrcpy(ifname, sizeof(ifr.ifr_name), ifr.ifr_name);
72
int tap_probe_vnet_hdr(int fd, Error **errp)
57
return 0;
58
}
59
+
60
+int tap_fd_set_steering_ebpf(int fd, int prog_fd)
61
+{
62
+ if (ioctl(fd, TUNSETSTEERINGEBPF, (void *) &prog_fd) != 0) {
63
+ error_report("Issue while setting TUNSETSTEERINGEBPF:"
64
+ " %s with fd: %d, prog_fd: %d",
65
+ strerror(errno), fd, prog_fd);
66
+
67
+ return -1;
68
+ }
69
+
70
+ return 0;
71
+}
72
diff --git a/net/tap-solaris.c b/net/tap-solaris.c
73
index XXXXXXX..XXXXXXX 100644
74
--- a/net/tap-solaris.c
75
+++ b/net/tap-solaris.c
76
@@ -XXX,XX +XXX,XX @@ int tap_fd_get_ifname(int fd, char *ifname)
77
{
73
{
78
return -1;
74
struct ifreq ifr;
79
}
75
+ memset(&ifr, 0, sizeof(ifr));
80
+
76
81
+int tap_fd_set_steering_ebpf(int fd, int prog_fd)
77
if (ioctl(fd, TUNGETIFF, &ifr) != 0) {
82
+{
78
/* TUNGETIFF is available since kernel v2.6.27 */
83
+ return -1;
84
+}
85
diff --git a/net/tap-stub.c b/net/tap-stub.c
86
index XXXXXXX..XXXXXXX 100644
87
--- a/net/tap-stub.c
88
+++ b/net/tap-stub.c
89
@@ -XXX,XX +XXX,XX @@ int tap_fd_get_ifname(int fd, char *ifname)
90
{
91
return -1;
92
}
93
+
94
+int tap_fd_set_steering_ebpf(int fd, int prog_fd)
95
+{
96
+ return -1;
97
+}
98
diff --git a/net/tap.c b/net/tap.c
99
index XXXXXXX..XXXXXXX 100644
100
--- a/net/tap.c
101
+++ b/net/tap.c
102
@@ -XXX,XX +XXX,XX @@ static void tap_poll(NetClientState *nc, bool enable)
103
tap_write_poll(s, enable);
104
}
105
106
+static bool tap_set_steering_ebpf(NetClientState *nc, int prog_fd)
107
+{
108
+ TAPState *s = DO_UPCAST(TAPState, nc, nc);
109
+ assert(nc->info->type == NET_CLIENT_DRIVER_TAP);
110
+
111
+ return tap_fd_set_steering_ebpf(s->fd, prog_fd) == 0;
112
+}
113
+
114
int tap_get_fd(NetClientState *nc)
115
{
116
TAPState *s = DO_UPCAST(TAPState, nc, nc);
117
@@ -XXX,XX +XXX,XX @@ static NetClientInfo net_tap_info = {
118
.set_vnet_hdr_len = tap_set_vnet_hdr_len,
119
.set_vnet_le = tap_set_vnet_le,
120
.set_vnet_be = tap_set_vnet_be,
121
+ .set_steering_ebpf = tap_set_steering_ebpf,
122
};
123
124
static TAPState *net_tap_fd_init(NetClientState *peer,
125
diff --git a/net/tap_int.h b/net/tap_int.h
126
index XXXXXXX..XXXXXXX 100644
127
--- a/net/tap_int.h
128
+++ b/net/tap_int.h
129
@@ -XXX,XX +XXX,XX @@ int tap_fd_set_vnet_be(int fd, int vnet_is_be);
130
int tap_fd_enable(int fd);
131
int tap_fd_disable(int fd);
132
int tap_fd_get_ifname(int fd, char *ifname);
133
+int tap_fd_set_steering_ebpf(int fd, int prog_fd);
134
135
#endif /* NET_TAP_INT_H */
136
--
79
--
137
2.7.4
80
2.7.4
138
81
139
82
diff view generated by jsdifflib
[PULL 6/7] docs: Added eBPF documentation.
[PULL 4/8] net/colo-compare.c: Optimize compare order for performance
1
From: Andrew Melnychenko <andrew@daynix.com>
1
From: Zhang Chen <chen.zhang@intel.com>
2
2
3
Signed-off-by: Yuri Benditovich <yuri.benditovich@daynix.com>
3
COLO-compare use the glib function g_queue_find_custom to dump
4
Signed-off-by: Andrew Melnychenko <andrew@daynix.com>
4
another VM's networking packet to compare. But this function always
5
start find from the queue->head(here is the newest packet), It will
6
reduce the success rate of comparison. So this patch reversed
7
the order of the queues for performance.
8
9
Signed-off-by: Zhang Chen <chen.zhang@intel.com>
10
Reported-by: leirao <lei.rao@intel.com>
5
Signed-off-by: Jason Wang <jasowang@redhat.com>
11
Signed-off-by: Jason Wang <jasowang@redhat.com>
6
---
12
---
7
docs/devel/ebpf_rss.rst | 125 ++++++++++++++++++++++++++++++++++++++++++++++++
13
net/colo-compare.c | 26 +++++++++++++-------------
8
docs/devel/index.rst | 1 +
14
1 file changed, 13 insertions(+), 13 deletions(-)
9
2 files changed, 126 insertions(+)
10
create mode 100644 docs/devel/ebpf_rss.rst
11
15
12
diff --git a/docs/devel/ebpf_rss.rst b/docs/devel/ebpf_rss.rst
16
diff --git a/net/colo-compare.c b/net/colo-compare.c
13
new file mode 100644
14
index XXXXXXX..XXXXXXX
15
--- /dev/null
16
+++ b/docs/devel/ebpf_rss.rst
17
@@ -XXX,XX +XXX,XX @@
18
+===========================
19
+eBPF RSS virtio-net support
20
+===========================
21
+
22
+RSS(Receive Side Scaling) is used to distribute network packets to guest virtqueues
23
+by calculating packet hash. Usually every queue is processed then by a specific guest CPU core.
24
+
25
+For now there are 2 RSS implementations in qemu:
26
+- 'in-qemu' RSS (functions if qemu receives network packets, i.e. vhost=off)
27
+- eBPF RSS (can function with also with vhost=on)
28
+
29
+eBPF support (CONFIG_EBPF) is enabled by 'configure' script.
30
+To enable eBPF RSS support use './configure --enable-bpf'.
31
+
32
+If steering BPF is not set for kernel's TUN module, the TUN uses automatic selection
33
+of rx virtqueue based on lookup table built according to calculated symmetric hash
34
+of transmitted packets.
35
+If steering BPF is set for TUN the BPF code calculates the hash of packet header and
36
+returns the virtqueue number to place the packet to.
37
+
38
+Simplified decision formula:
39
+
40
+.. code:: C
41
+
42
+ queue_index = indirection_table[hash(<packet data>)%<indirection_table size>]
43
+
44
+
45
+Not for all packets, the hash can/should be calculated.
46
+
47
+Note: currently, eBPF RSS does not support hash reporting.
48
+
49
+eBPF RSS turned on by different combinations of vhost-net, vitrio-net and tap configurations:
50
+
51
+- eBPF is used:
52
+
53
+ tap,vhost=off & virtio-net-pci,rss=on,hash=off
54
+
55
+- eBPF is used:
56
+
57
+ tap,vhost=on & virtio-net-pci,rss=on,hash=off
58
+
59
+- 'in-qemu' RSS is used:
60
+
61
+ tap,vhost=off & virtio-net-pci,rss=on,hash=on
62
+
63
+- eBPF is used, hash population feature is not reported to the guest:
64
+
65
+ tap,vhost=on & virtio-net-pci,rss=on,hash=on
66
+
67
+If CONFIG_EBPF is not set then only 'in-qemu' RSS is supported.
68
+Also 'in-qemu' RSS, as a fallback, is used if the eBPF program failed to load or set to TUN.
69
+
70
+RSS eBPF program
71
+----------------
72
+
73
+RSS program located in ebpf/rss.bpf.skeleton.h generated by bpftool.
74
+So the program is part of the qemu binary.
75
+Initially, the eBPF program was compiled by clang and source code located at tools/ebpf/rss.bpf.c.
76
+Prerequisites to recompile the eBPF program (regenerate ebpf/rss.bpf.skeleton.h):
77
+
78
+ llvm, clang, kernel source tree, bpftool
79
+ Adjust Makefile.ebpf to reflect the location of the kernel source tree
80
+
81
+ $ cd tools/ebpf
82
+ $ make -f Makefile.ebpf
83
+
84
+Current eBPF RSS implementation uses 'bounded loops' with 'backward jump instructions' which present in the last kernels.
85
+Overall eBPF RSS works on kernels 5.8+.
86
+
87
+eBPF RSS implementation
88
+-----------------------
89
+
90
+eBPF RSS loading functionality located in ebpf/ebpf_rss.c and ebpf/ebpf_rss.h.
91
+
92
+The `struct EBPFRSSContext` structure that holds 4 file descriptors:
93
+
94
+- ctx - pointer of the libbpf context.
95
+- program_fd - file descriptor of the eBPF RSS program.
96
+- map_configuration - file descriptor of the 'configuration' map. This map contains one element of 'struct EBPFRSSConfig'. This configuration determines eBPF program behavior.
97
+- map_toeplitz_key - file descriptor of the 'Toeplitz key' map. One element of the 40byte key prepared for the hashing algorithm.
98
+- map_indirections_table - 128 elements of queue indexes.
99
+
100
+`struct EBPFRSSConfig` fields:
101
+
102
+- redirect - "boolean" value, should the hash be calculated, on false - `default_queue` would be used as the final decision.
103
+- populate_hash - for now, not used. eBPF RSS doesn't support hash reporting.
104
+- hash_types - binary mask of different hash types. See `VIRTIO_NET_RSS_HASH_TYPE_*` defines. If for packet hash should not be calculated - `default_queue` would be used.
105
+- indirections_len - length of the indirections table, maximum 128.
106
+- default_queue - the queue index that used for packet that shouldn't be hashed. For some packets, the hash can't be calculated(g.e ARP).
107
+
108
+Functions:
109
+
110
+- `ebpf_rss_init()` - sets ctx to NULL, which indicates that EBPFRSSContext is not loaded.
111
+- `ebpf_rss_load()` - creates 3 maps and loads eBPF program from the rss.bpf.skeleton.h. Returns 'true' on success. After that, program_fd can be used to set steering for TAP.
112
+- `ebpf_rss_set_all()` - sets values for eBPF maps. `indirections_table` length is in EBPFRSSConfig. `toeplitz_key` is VIRTIO_NET_RSS_MAX_KEY_SIZE aka 40 bytes array.
113
+- `ebpf_rss_unload()` - close all file descriptors and set ctx to NULL.
114
+
115
+Simplified eBPF RSS workflow:
116
+
117
+.. code:: C
118
+
119
+ struct EBPFRSSConfig config;
120
+ config.redirect = 1;
121
+ config.hash_types = VIRTIO_NET_RSS_HASH_TYPE_UDPv4 | VIRTIO_NET_RSS_HASH_TYPE_TCPv4;
122
+ config.indirections_len = VIRTIO_NET_RSS_MAX_TABLE_LEN;
123
+ config.default_queue = 0;
124
+
125
+ uint16_t table[VIRTIO_NET_RSS_MAX_TABLE_LEN] = {...};
126
+ uint8_t key[VIRTIO_NET_RSS_MAX_KEY_SIZE] = {...};
127
+
128
+ struct EBPFRSSContext ctx;
129
+ ebpf_rss_init(&ctx);
130
+ ebpf_rss_load(&ctx);
131
+ ebpf_rss_set_all(&ctx, &config, table, key);
132
+ if (net_client->info->set_steering_ebpf != NULL) {
133
+ net_client->info->set_steering_ebpf(net_client, ctx->program_fd);
134
+ }
135
+ ...
136
+ ebpf_unload(&ctx);
137
+
138
+
139
+NetClientState SetSteeringEBPF()
140
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
141
+
142
+For now, `set_steering_ebpf()` method supported by Linux TAP NetClientState. The method requires an eBPF program file descriptor as an argument.
143
diff --git a/docs/devel/index.rst b/docs/devel/index.rst
144
index XXXXXXX..XXXXXXX 100644
17
index XXXXXXX..XXXXXXX 100644
145
--- a/docs/devel/index.rst
18
--- a/net/colo-compare.c
146
+++ b/docs/devel/index.rst
19
+++ b/net/colo-compare.c
147
@@ -XXX,XX +XXX,XX @@ Contents:
20
@@ -XXX,XX +XXX,XX @@ static void colo_compare_inconsistency_notify(CompareState *s)
148
qom
21
/* Use restricted to colo_insert_packet() */
149
block-coroutine-wrapper
22
static gint seq_sorter(Packet *a, Packet *b, gpointer data)
150
multi-process
23
{
151
+ ebpf_rss
24
- return a->tcp_seq - b->tcp_seq;
25
+ return b->tcp_seq - a->tcp_seq;
26
}
27
28
static void fill_pkt_tcp_info(void *data, uint32_t *max_ack)
29
@@ -XXX,XX +XXX,XX @@ pri:
30
if (g_queue_is_empty(&conn->primary_list)) {
31
return;
32
}
33
- ppkt = g_queue_pop_head(&conn->primary_list);
34
+ ppkt = g_queue_pop_tail(&conn->primary_list);
35
sec:
36
if (g_queue_is_empty(&conn->secondary_list)) {
37
- g_queue_push_head(&conn->primary_list, ppkt);
38
+ g_queue_push_tail(&conn->primary_list, ppkt);
39
return;
40
}
41
- spkt = g_queue_pop_head(&conn->secondary_list);
42
+ spkt = g_queue_pop_tail(&conn->secondary_list);
43
44
if (ppkt->tcp_seq == ppkt->seq_end) {
45
colo_release_primary_pkt(s, ppkt);
46
@@ -XXX,XX +XXX,XX @@ sec:
47
}
48
}
49
if (!ppkt) {
50
- g_queue_push_head(&conn->secondary_list, spkt);
51
+ g_queue_push_tail(&conn->secondary_list, spkt);
52
goto pri;
53
}
54
}
55
@@ -XXX,XX +XXX,XX @@ sec:
56
if (mark == COLO_COMPARE_FREE_PRIMARY) {
57
conn->compare_seq = ppkt->seq_end;
58
colo_release_primary_pkt(s, ppkt);
59
- g_queue_push_head(&conn->secondary_list, spkt);
60
+ g_queue_push_tail(&conn->secondary_list, spkt);
61
goto pri;
62
} else if (mark == COLO_COMPARE_FREE_SECONDARY) {
63
conn->compare_seq = spkt->seq_end;
64
@@ -XXX,XX +XXX,XX @@ sec:
65
goto pri;
66
}
67
} else {
68
- g_queue_push_head(&conn->primary_list, ppkt);
69
- g_queue_push_head(&conn->secondary_list, spkt);
70
+ g_queue_push_tail(&conn->primary_list, ppkt);
71
+ g_queue_push_tail(&conn->secondary_list, spkt);
72
73
#ifdef DEBUG_COLO_PACKETS
74
qemu_hexdump(stderr, "colo-compare ppkt", ppkt->data, ppkt->size);
75
@@ -XXX,XX +XXX,XX @@ static void colo_compare_packet(CompareState *s, Connection *conn,
76
77
while (!g_queue_is_empty(&conn->primary_list) &&
78
!g_queue_is_empty(&conn->secondary_list)) {
79
- pkt = g_queue_pop_head(&conn->primary_list);
80
+ pkt = g_queue_pop_tail(&conn->primary_list);
81
result = g_queue_find_custom(&conn->secondary_list,
82
pkt, (GCompareFunc)HandlePacket);
83
84
@@ -XXX,XX +XXX,XX @@ static void colo_compare_packet(CompareState *s, Connection *conn,
85
* timeout, it will trigger a checkpoint request.
86
*/
87
trace_colo_compare_main("packet different");
88
- g_queue_push_head(&conn->primary_list, pkt);
89
+ g_queue_push_tail(&conn->primary_list, pkt);
90
91
colo_compare_inconsistency_notify(s);
92
break;
93
@@ -XXX,XX +XXX,XX @@ static int compare_chr_send(CompareState *s,
94
entry->buf = g_malloc(size);
95
memcpy(entry->buf, buf, size);
96
}
97
- g_queue_push_head(&sendco->send_list, entry);
98
+ g_queue_push_tail(&sendco->send_list, entry);
99
100
if (sendco->done) {
101
sendco->co = qemu_coroutine_create(_compare_chr_send, sendco);
102
@@ -XXX,XX +XXX,XX @@ static void colo_flush_packets(void *opaque, void *user_data)
103
Packet *pkt = NULL;
104
105
while (!g_queue_is_empty(&conn->primary_list)) {
106
- pkt = g_queue_pop_head(&conn->primary_list);
107
+ pkt = g_queue_pop_tail(&conn->primary_list);
108
compare_chr_send(s,
109
pkt->data,
110
pkt->size,
111
@@ -XXX,XX +XXX,XX @@ static void colo_flush_packets(void *opaque, void *user_data)
112
packet_destroy_partial(pkt, NULL);
113
}
114
while (!g_queue_is_empty(&conn->secondary_list)) {
115
- pkt = g_queue_pop_head(&conn->secondary_list);
116
+ pkt = g_queue_pop_tail(&conn->secondary_list);
117
packet_destroy(pkt, NULL);
118
}
119
}
152
--
120
--
153
2.7.4
121
2.7.4
154
122
155
123
diff view generated by jsdifflib
[PULL 1/7] net/tap: Added TUNSETSTEERINGEBPF code.
[PULL 5/8] net/colo-compare.c: Update the default value comments
1
From: Andrew Melnychenko <andrew@daynix.com>
1
From: Zhang Chen <chen.zhang@intel.com>
2
2
3
Additional code that will be used for eBPF setting steering routine.
3
Make the comments consistent with the REGULAR_PACKET_CHECK_MS.
4
4
5
Signed-off-by: Andrew Melnychenko <andrew@daynix.com>
5
Signed-off-by: Zhang Chen <chen.zhang@intel.com>
6
Signed-off-by: Jason Wang <jasowang@redhat.com>
6
Signed-off-by: Jason Wang <jasowang@redhat.com>
7
---
7
---
8
net/tap-linux.h | 1 +
8
net/colo-compare.c | 2 +-
9
1 file changed, 1 insertion(+)
9
1 file changed, 1 insertion(+), 1 deletion(-)
10
10
11
diff --git a/net/tap-linux.h b/net/tap-linux.h
11
diff --git a/net/colo-compare.c b/net/colo-compare.c
12
index XXXXXXX..XXXXXXX 100644
12
index XXXXXXX..XXXXXXX 100644
13
--- a/net/tap-linux.h
13
--- a/net/colo-compare.c
14
+++ b/net/tap-linux.h
14
+++ b/net/colo-compare.c
15
@@ -XXX,XX +XXX,XX @@
15
@@ -XXX,XX +XXX,XX @@ static void colo_compare_complete(UserCreatable *uc, Error **errp)
16
#define TUNSETQUEUE _IOW('T', 217, int)
16
}
17
#define TUNSETVNETLE _IOW('T', 220, int)
17
18
#define TUNSETVNETBE _IOW('T', 222, int)
18
if (!s->expired_scan_cycle) {
19
+#define TUNSETSTEERINGEBPF _IOR('T', 224, int)
19
- /* Set default value to 3000 MS */
20
20
+ /* Set default value to 1000 MS */
21
#endif
21
s->expired_scan_cycle = REGULAR_PACKET_CHECK_MS;
22
}
22
23
23
--
24
--
24
2.7.4
25
2.7.4
25
26
26
27
diff view generated by jsdifflib
[PULL 3/7] ebpf: Added eBPF RSS program.
[PULL 6/8] net/filter: Optimize filter_send to coroutine
1
From: Andrew Melnychenko <andrew@daynix.com>
1
From: Rao Lei <lei.rao@intel.com>
2
2
3
RSS program and Makefile to build it.
3
This patch is to improve the logic of QEMU main thread sleep code in
4
The bpftool used to generate '.h' file.
4
qemu_chr_write_buffer() where it can be blocked and can't run other
5
The data in that file may be loaded by libbpf.
5
coroutines during COLO IO stress test.
6
EBPF compilation is not required for building qemu.
7
You can use Makefile if you need to regenerate rss.bpf.skeleton.h.
8
6
9
Signed-off-by: Yuri Benditovich <yuri.benditovich@daynix.com>
7
Our approach is to put filter_send() in a coroutine. In this way,
10
Signed-off-by: Andrew Melnychenko <andrew@daynix.com>
8
filter_send() will call qemu_coroutine_yield() in qemu_co_sleep_ns(),
9
so that it can be scheduled out and QEMU main thread has opportunity to
10
run other tasks.
11
12
Signed-off-by: Lei Rao <lei.rao@intel.com>
13
Signed-off-by: Zhang Chen <chen.zhang@intel.com>
14
Reviewed-by: Li Zhijian <lizhijian@fujitsu.com>
15
Reviewed-by: Zhang Chen <chen.zhang@intel.com>
11
Signed-off-by: Jason Wang <jasowang@redhat.com>
16
Signed-off-by: Jason Wang <jasowang@redhat.com>
12
---
17
---
13
tools/ebpf/Makefile.ebpf | 21 ++
18
net/filter-mirror.c | 66 ++++++++++++++++++++++++++++++++++++++++++-----------
14
tools/ebpf/rss.bpf.c | 571 +++++++++++++++++++++++++++++++++++++++++++++++
19
1 file changed, 53 insertions(+), 13 deletions(-)
15
2 files changed, 592 insertions(+)
16
create mode 100755 tools/ebpf/Makefile.ebpf
17
create mode 100644 tools/ebpf/rss.bpf.c
18
20
19
diff --git a/tools/ebpf/Makefile.ebpf b/tools/ebpf/Makefile.ebpf
21
diff --git a/net/filter-mirror.c b/net/filter-mirror.c
20
new file mode 100755
22
index XXXXXXX..XXXXXXX 100644
21
index XXXXXXX..XXXXXXX
23
--- a/net/filter-mirror.c
22
--- /dev/null
24
+++ b/net/filter-mirror.c
23
+++ b/tools/ebpf/Makefile.ebpf
24
@@ -XXX,XX +XXX,XX @@
25
@@ -XXX,XX +XXX,XX @@
25
+OBJS = rss.bpf.o
26
#include "chardev/char-fe.h"
27
#include "qemu/iov.h"
28
#include "qemu/sockets.h"
29
+#include "block/aio-wait.h"
30
31
#define TYPE_FILTER_MIRROR "filter-mirror"
32
typedef struct MirrorState MirrorState;
33
@@ -XXX,XX +XXX,XX @@ struct MirrorState {
34
bool vnet_hdr;
35
};
36
37
-static int filter_send(MirrorState *s,
38
- const struct iovec *iov,
39
- int iovcnt)
40
+typedef struct FilterSendCo {
41
+ MirrorState *s;
42
+ char *buf;
43
+ ssize_t size;
44
+ bool done;
45
+ int ret;
46
+} FilterSendCo;
26
+
47
+
27
+LLC ?= llc
48
+static int _filter_send(MirrorState *s,
28
+CLANG ?= clang
49
+ char *buf,
29
+INC_FLAGS = `$(CLANG) -print-file-name=include`
50
+ ssize_t size)
30
+EXTRA_CFLAGS ?= -O2 -emit-llvm -fno-stack-protector
51
{
52
NetFilterState *nf = NETFILTER(s);
53
int ret = 0;
54
- ssize_t size = 0;
55
uint32_t len = 0;
56
- char *buf;
57
-
58
- size = iov_size(iov, iovcnt);
59
- if (!size) {
60
- return 0;
61
- }
62
63
len = htonl(size);
64
ret = qemu_chr_fe_write_all(&s->chr_out, (uint8_t *)&len, sizeof(len));
65
@@ -XXX,XX +XXX,XX @@ static int filter_send(MirrorState *s,
66
}
67
}
68
69
- buf = g_malloc(size);
70
- iov_to_buf(iov, iovcnt, 0, buf, size);
71
ret = qemu_chr_fe_write_all(&s->chr_out, (uint8_t *)buf, size);
72
- g_free(buf);
73
if (ret != size) {
74
goto err;
75
}
76
@@ -XXX,XX +XXX,XX @@ err:
77
return ret < 0 ? ret : -EIO;
78
}
79
80
+static void coroutine_fn filter_send_co(void *opaque)
81
+{
82
+ FilterSendCo *data = opaque;
31
+
83
+
32
+all: $(OBJS)
84
+ data->ret = _filter_send(data->s, data->buf, data->size);
33
+
85
+ data->done = true;
34
+.PHONY: clean
86
+ g_free(data->buf);
35
+
87
+ aio_wait_kick();
36
+clean:
37
+    rm -f $(OBJS)
38
+
39
+$(OBJS): %.o:%.c
40
+    $(CLANG) $(INC_FLAGS) \
41
+ -D__KERNEL__ -D__ASM_SYSREG_H \
42
+ -I../include $(LINUXINCLUDE) \
43
+ $(EXTRA_CFLAGS) -c $< -o -| $(LLC) -march=bpf -filetype=obj -o $@
44
+    bpftool gen skeleton rss.bpf.o > rss.bpf.skeleton.h
45
+    cp rss.bpf.skeleton.h ../../ebpf/
46
diff --git a/tools/ebpf/rss.bpf.c b/tools/ebpf/rss.bpf.c
47
new file mode 100644
48
index XXXXXXX..XXXXXXX
49
--- /dev/null
50
+++ b/tools/ebpf/rss.bpf.c
51
@@ -XXX,XX +XXX,XX @@
52
+/*
53
+ * eBPF RSS program
54
+ *
55
+ * Developed by Daynix Computing LTD (http://www.daynix.com)
56
+ *
57
+ * Authors:
58
+ * Andrew Melnychenko <andrew@daynix.com>
59
+ * Yuri Benditovich <yuri.benditovich@daynix.com>
60
+ *
61
+ * This work is licensed under the terms of the GNU GPL, version 2. See
62
+ * the COPYING file in the top-level directory.
63
+ *
64
+ * Prepare:
65
+ * Requires llvm, clang, bpftool, linux kernel tree
66
+ *
67
+ * Build rss.bpf.skeleton.h:
68
+ * make -f Makefile.ebpf clean all
69
+ */
70
+
71
+#include <stddef.h>
72
+#include <stdbool.h>
73
+#include <linux/bpf.h>
74
+
75
+#include <linux/in.h>
76
+#include <linux/if_ether.h>
77
+#include <linux/ip.h>
78
+#include <linux/ipv6.h>
79
+
80
+#include <linux/udp.h>
81
+#include <linux/tcp.h>
82
+
83
+#include <bpf/bpf_helpers.h>
84
+#include <bpf/bpf_endian.h>
85
+#include <linux/virtio_net.h>
86
+
87
+#define INDIRECTION_TABLE_SIZE 128
88
+#define HASH_CALCULATION_BUFFER_SIZE 36
89
+
90
+struct rss_config_t {
91
+ __u8 redirect;
92
+ __u8 populate_hash;
93
+ __u32 hash_types;
94
+ __u16 indirections_len;
95
+ __u16 default_queue;
96
+} __attribute__((packed));
97
+
98
+struct toeplitz_key_data_t {
99
+ __u32 leftmost_32_bits;
100
+ __u8 next_byte[HASH_CALCULATION_BUFFER_SIZE];
101
+};
102
+
103
+struct packet_hash_info_t {
104
+ __u8 is_ipv4;
105
+ __u8 is_ipv6;
106
+ __u8 is_udp;
107
+ __u8 is_tcp;
108
+ __u8 is_ipv6_ext_src;
109
+ __u8 is_ipv6_ext_dst;
110
+ __u8 is_fragmented;
111
+
112
+ __u16 src_port;
113
+ __u16 dst_port;
114
+
115
+ union {
116
+ struct {
117
+ __be32 in_src;
118
+ __be32 in_dst;
119
+ };
120
+
121
+ struct {
122
+ struct in6_addr in6_src;
123
+ struct in6_addr in6_dst;
124
+ struct in6_addr in6_ext_src;
125
+ struct in6_addr in6_ext_dst;
126
+ };
127
+ };
128
+};
129
+
130
+struct bpf_map_def SEC("maps")
131
+tap_rss_map_configurations = {
132
+ .type = BPF_MAP_TYPE_ARRAY,
133
+ .key_size = sizeof(__u32),
134
+ .value_size = sizeof(struct rss_config_t),
135
+ .max_entries = 1,
136
+};
137
+
138
+struct bpf_map_def SEC("maps")
139
+tap_rss_map_toeplitz_key = {
140
+ .type = BPF_MAP_TYPE_ARRAY,
141
+ .key_size = sizeof(__u32),
142
+ .value_size = sizeof(struct toeplitz_key_data_t),
143
+ .max_entries = 1,
144
+};
145
+
146
+struct bpf_map_def SEC("maps")
147
+tap_rss_map_indirection_table = {
148
+ .type = BPF_MAP_TYPE_ARRAY,
149
+ .key_size = sizeof(__u32),
150
+ .value_size = sizeof(__u16),
151
+ .max_entries = INDIRECTION_TABLE_SIZE,
152
+};
153
+
154
+static inline void net_rx_rss_add_chunk(__u8 *rss_input, size_t *bytes_written,
155
+ const void *ptr, size_t size) {
156
+ __builtin_memcpy(&rss_input[*bytes_written], ptr, size);
157
+ *bytes_written += size;
158
+}
88
+}
159
+
89
+
160
+static inline
90
+static int filter_send(MirrorState *s,
161
+void net_toeplitz_add(__u32 *result,
91
+ const struct iovec *iov,
162
+ __u8 *input,
92
+ int iovcnt)
163
+ __u32 len
93
+{
164
+ , struct toeplitz_key_data_t *key) {
94
+ ssize_t size = iov_size(iov, iovcnt);
95
+ char *buf = NULL;
165
+
96
+
166
+ __u32 accumulator = *result;
97
+ if (!size) {
167
+ __u32 leftmost_32_bits = key->leftmost_32_bits;
168
+ __u32 byte;
169
+
170
+ for (byte = 0; byte < HASH_CALCULATION_BUFFER_SIZE; byte++) {
171
+ __u8 input_byte = input[byte];
172
+ __u8 key_byte = key->next_byte[byte];
173
+ __u8 bit;
174
+
175
+ for (bit = 0; bit < 8; bit++) {
176
+ if (input_byte & (1 << 7)) {
177
+ accumulator ^= leftmost_32_bits;
178
+ }
179
+
180
+ leftmost_32_bits =
181
+ (leftmost_32_bits << 1) | ((key_byte & (1 << 7)) >> 7);
182
+
183
+ input_byte <<= 1;
184
+ key_byte <<= 1;
185
+ }
186
+ }
187
+
188
+ *result = accumulator;
189
+}
190
+
191
+
192
+static inline int ip6_extension_header_type(__u8 hdr_type)
193
+{
194
+ switch (hdr_type) {
195
+ case IPPROTO_HOPOPTS:
196
+ case IPPROTO_ROUTING:
197
+ case IPPROTO_FRAGMENT:
198
+ case IPPROTO_ICMPV6:
199
+ case IPPROTO_NONE:
200
+ case IPPROTO_DSTOPTS:
201
+ case IPPROTO_MH:
202
+ return 1;
203
+ default:
204
+ return 0;
205
+ }
206
+}
207
+/*
208
+ * According to
209
+ * https://www.iana.org/assignments/ipv6-parameters/ipv6-parameters.xhtml
210
+ * we expect that there are would be no more than 11 extensions in IPv6 header,
211
+ * also there is 27 TLV options for Destination and Hop-by-hop extensions.
212
+ * Need to choose reasonable amount of maximum extensions/options we may
213
+ * check to find ext src/dst.
214
+ */
215
+#define IP6_EXTENSIONS_COUNT 11
216
+#define IP6_OPTIONS_COUNT 30
217
+
218
+static inline int parse_ipv6_ext(struct __sk_buff *skb,
219
+ struct packet_hash_info_t *info,
220
+ __u8 *l4_protocol, size_t *l4_offset)
221
+{
222
+ int err = 0;
223
+
224
+ if (!ip6_extension_header_type(*l4_protocol)) {
225
+ return 0;
98
+ return 0;
226
+ }
99
+ }
227
+
100
+
228
+ struct ipv6_opt_hdr ext_hdr = {};
101
+ buf = g_malloc(size);
102
+ iov_to_buf(iov, iovcnt, 0, buf, size);
229
+
103
+
230
+ for (unsigned int i = 0; i < IP6_EXTENSIONS_COUNT; ++i) {
104
+ FilterSendCo data = {
105
+ .s = s,
106
+ .size = size,
107
+ .buf = buf,
108
+ .ret = 0,
109
+ };
231
+
110
+
232
+ err = bpf_skb_load_bytes_relative(skb, *l4_offset, &ext_hdr,
111
+ Coroutine *co = qemu_coroutine_create(filter_send_co, &data);
233
+ sizeof(ext_hdr), BPF_HDR_START_NET);
112
+ qemu_coroutine_enter(co);
234
+ if (err) {
235
+ goto error;
236
+ }
237
+
113
+
238
+ if (*l4_protocol == IPPROTO_ROUTING) {
114
+ while (!data.done) {
239
+ struct ipv6_rt_hdr ext_rt = {};
115
+ aio_poll(qemu_get_aio_context(), true);
240
+
241
+ err = bpf_skb_load_bytes_relative(skb, *l4_offset, &ext_rt,
242
+ sizeof(ext_rt), BPF_HDR_START_NET);
243
+ if (err) {
244
+ goto error;
245
+ }
246
+
247
+ if ((ext_rt.type == IPV6_SRCRT_TYPE_2) &&
248
+ (ext_rt.hdrlen == sizeof(struct in6_addr) / 8) &&
249
+ (ext_rt.segments_left == 1)) {
250
+
251
+ err = bpf_skb_load_bytes_relative(skb,
252
+ *l4_offset + offsetof(struct rt2_hdr, addr),
253
+ &info->in6_ext_dst, sizeof(info->in6_ext_dst),
254
+ BPF_HDR_START_NET);
255
+ if (err) {
256
+ goto error;
257
+ }
258
+
259
+ info->is_ipv6_ext_dst = 1;
260
+ }
261
+
262
+ } else if (*l4_protocol == IPPROTO_DSTOPTS) {
263
+ struct ipv6_opt_t {
264
+ __u8 type;
265
+ __u8 length;
266
+ } __attribute__((packed)) opt = {};
267
+
268
+ size_t opt_offset = sizeof(ext_hdr);
269
+
270
+ for (unsigned int j = 0; j < IP6_OPTIONS_COUNT; ++j) {
271
+ err = bpf_skb_load_bytes_relative(skb, *l4_offset + opt_offset,
272
+ &opt, sizeof(opt), BPF_HDR_START_NET);
273
+ if (err) {
274
+ goto error;
275
+ }
276
+
277
+ if (opt.type == IPV6_TLV_HAO) {
278
+ err = bpf_skb_load_bytes_relative(skb,
279
+ *l4_offset + opt_offset
280
+ + offsetof(struct ipv6_destopt_hao, addr),
281
+ &info->in6_ext_src, sizeof(info->in6_ext_src),
282
+ BPF_HDR_START_NET);
283
+ if (err) {
284
+ goto error;
285
+ }
286
+
287
+ info->is_ipv6_ext_src = 1;
288
+ break;
289
+ }
290
+
291
+ opt_offset += (opt.type == IPV6_TLV_PAD1) ?
292
+ 1 : opt.length + sizeof(opt);
293
+
294
+ if (opt_offset + 1 >= ext_hdr.hdrlen * 8) {
295
+ break;
296
+ }
297
+ }
298
+ } else if (*l4_protocol == IPPROTO_FRAGMENT) {
299
+ info->is_fragmented = true;
300
+ }
301
+
302
+ *l4_protocol = ext_hdr.nexthdr;
303
+ *l4_offset += (ext_hdr.hdrlen + 1) * 8;
304
+
305
+ if (!ip6_extension_header_type(ext_hdr.nexthdr)) {
306
+ return 0;
307
+ }
308
+ }
116
+ }
309
+
117
+
310
+ return 0;
118
+ return data.ret;
311
+error:
312
+ return err;
313
+}
119
+}
314
+
120
+
315
+static __be16 parse_eth_type(struct __sk_buff *skb)
121
static void redirector_to_filter(NetFilterState *nf,
316
+{
122
const uint8_t *buf,
317
+ unsigned int offset = 12;
123
int len)
318
+ __be16 ret = 0;
319
+ int err = 0;
320
+
321
+ err = bpf_skb_load_bytes_relative(skb, offset, &ret, sizeof(ret),
322
+ BPF_HDR_START_MAC);
323
+ if (err) {
324
+ return 0;
325
+ }
326
+
327
+ switch (bpf_ntohs(ret)) {
328
+ case ETH_P_8021AD:
329
+ offset += 4;
330
+ case ETH_P_8021Q:
331
+ offset += 4;
332
+ err = bpf_skb_load_bytes_relative(skb, offset, &ret, sizeof(ret),
333
+ BPF_HDR_START_MAC);
334
+ default:
335
+ break;
336
+ }
337
+
338
+ if (err) {
339
+ return 0;
340
+ }
341
+
342
+ return ret;
343
+}
344
+
345
+static inline int parse_packet(struct __sk_buff *skb,
346
+ struct packet_hash_info_t *info)
347
+{
348
+ int err = 0;
349
+
350
+ if (!info || !skb) {
351
+ return -1;
352
+ }
353
+
354
+ size_t l4_offset = 0;
355
+ __u8 l4_protocol = 0;
356
+ __u16 l3_protocol = bpf_ntohs(parse_eth_type(skb));
357
+ if (l3_protocol == 0) {
358
+ err = -1;
359
+ goto error;
360
+ }
361
+
362
+ if (l3_protocol == ETH_P_IP) {
363
+ info->is_ipv4 = 1;
364
+
365
+ struct iphdr ip = {};
366
+ err = bpf_skb_load_bytes_relative(skb, 0, &ip, sizeof(ip),
367
+ BPF_HDR_START_NET);
368
+ if (err) {
369
+ goto error;
370
+ }
371
+
372
+ info->in_src = ip.saddr;
373
+ info->in_dst = ip.daddr;
374
+ info->is_fragmented = !!ip.frag_off;
375
+
376
+ l4_protocol = ip.protocol;
377
+ l4_offset = ip.ihl * 4;
378
+ } else if (l3_protocol == ETH_P_IPV6) {
379
+ info->is_ipv6 = 1;
380
+
381
+ struct ipv6hdr ip6 = {};
382
+ err = bpf_skb_load_bytes_relative(skb, 0, &ip6, sizeof(ip6),
383
+ BPF_HDR_START_NET);
384
+ if (err) {
385
+ goto error;
386
+ }
387
+
388
+ info->in6_src = ip6.saddr;
389
+ info->in6_dst = ip6.daddr;
390
+
391
+ l4_protocol = ip6.nexthdr;
392
+ l4_offset = sizeof(ip6);
393
+
394
+ err = parse_ipv6_ext(skb, info, &l4_protocol, &l4_offset);
395
+ if (err) {
396
+ goto error;
397
+ }
398
+ }
399
+
400
+ if (l4_protocol != 0 && !info->is_fragmented) {
401
+ if (l4_protocol == IPPROTO_TCP) {
402
+ info->is_tcp = 1;
403
+
404
+ struct tcphdr tcp = {};
405
+ err = bpf_skb_load_bytes_relative(skb, l4_offset, &tcp, sizeof(tcp),
406
+ BPF_HDR_START_NET);
407
+ if (err) {
408
+ goto error;
409
+ }
410
+
411
+ info->src_port = tcp.source;
412
+ info->dst_port = tcp.dest;
413
+ } else if (l4_protocol == IPPROTO_UDP) { /* TODO: add udplite? */
414
+ info->is_udp = 1;
415
+
416
+ struct udphdr udp = {};
417
+ err = bpf_skb_load_bytes_relative(skb, l4_offset, &udp, sizeof(udp),
418
+ BPF_HDR_START_NET);
419
+ if (err) {
420
+ goto error;
421
+ }
422
+
423
+ info->src_port = udp.source;
424
+ info->dst_port = udp.dest;
425
+ }
426
+ }
427
+
428
+ return 0;
429
+
430
+error:
431
+ return err;
432
+}
433
+
434
+static inline __u32 calculate_rss_hash(struct __sk_buff *skb,
435
+ struct rss_config_t *config, struct toeplitz_key_data_t *toe)
436
+{
437
+ __u8 rss_input[HASH_CALCULATION_BUFFER_SIZE] = {};
438
+ size_t bytes_written = 0;
439
+ __u32 result = 0;
440
+ int err = 0;
441
+ struct packet_hash_info_t packet_info = {};
442
+
443
+ err = parse_packet(skb, &packet_info);
444
+ if (err) {
445
+ return 0;
446
+ }
447
+
448
+ if (packet_info.is_ipv4) {
449
+ if (packet_info.is_tcp &&
450
+ config->hash_types & VIRTIO_NET_RSS_HASH_TYPE_TCPv4) {
451
+
452
+ net_rx_rss_add_chunk(rss_input, &bytes_written,
453
+ &packet_info.in_src,
454
+ sizeof(packet_info.in_src));
455
+ net_rx_rss_add_chunk(rss_input, &bytes_written,
456
+ &packet_info.in_dst,
457
+ sizeof(packet_info.in_dst));
458
+ net_rx_rss_add_chunk(rss_input, &bytes_written,
459
+ &packet_info.src_port,
460
+ sizeof(packet_info.src_port));
461
+ net_rx_rss_add_chunk(rss_input, &bytes_written,
462
+ &packet_info.dst_port,
463
+ sizeof(packet_info.dst_port));
464
+ } else if (packet_info.is_udp &&
465
+ config->hash_types & VIRTIO_NET_RSS_HASH_TYPE_UDPv4) {
466
+
467
+ net_rx_rss_add_chunk(rss_input, &bytes_written,
468
+ &packet_info.in_src,
469
+ sizeof(packet_info.in_src));
470
+ net_rx_rss_add_chunk(rss_input, &bytes_written,
471
+ &packet_info.in_dst,
472
+ sizeof(packet_info.in_dst));
473
+ net_rx_rss_add_chunk(rss_input, &bytes_written,
474
+ &packet_info.src_port,
475
+ sizeof(packet_info.src_port));
476
+ net_rx_rss_add_chunk(rss_input, &bytes_written,
477
+ &packet_info.dst_port,
478
+ sizeof(packet_info.dst_port));
479
+ } else if (config->hash_types & VIRTIO_NET_RSS_HASH_TYPE_IPv4) {
480
+ net_rx_rss_add_chunk(rss_input, &bytes_written,
481
+ &packet_info.in_src,
482
+ sizeof(packet_info.in_src));
483
+ net_rx_rss_add_chunk(rss_input, &bytes_written,
484
+ &packet_info.in_dst,
485
+ sizeof(packet_info.in_dst));
486
+ }
487
+ } else if (packet_info.is_ipv6) {
488
+ if (packet_info.is_tcp &&
489
+ config->hash_types & VIRTIO_NET_RSS_HASH_TYPE_TCPv6) {
490
+
491
+ if (packet_info.is_ipv6_ext_src &&
492
+ config->hash_types & VIRTIO_NET_RSS_HASH_TYPE_TCP_EX) {
493
+
494
+ net_rx_rss_add_chunk(rss_input, &bytes_written,
495
+ &packet_info.in6_ext_src,
496
+ sizeof(packet_info.in6_ext_src));
497
+ } else {
498
+ net_rx_rss_add_chunk(rss_input, &bytes_written,
499
+ &packet_info.in6_src,
500
+ sizeof(packet_info.in6_src));
501
+ }
502
+ if (packet_info.is_ipv6_ext_dst &&
503
+ config->hash_types & VIRTIO_NET_RSS_HASH_TYPE_TCP_EX) {
504
+
505
+ net_rx_rss_add_chunk(rss_input, &bytes_written,
506
+ &packet_info.in6_ext_dst,
507
+ sizeof(packet_info.in6_ext_dst));
508
+ } else {
509
+ net_rx_rss_add_chunk(rss_input, &bytes_written,
510
+ &packet_info.in6_dst,
511
+ sizeof(packet_info.in6_dst));
512
+ }
513
+ net_rx_rss_add_chunk(rss_input, &bytes_written,
514
+ &packet_info.src_port,
515
+ sizeof(packet_info.src_port));
516
+ net_rx_rss_add_chunk(rss_input, &bytes_written,
517
+ &packet_info.dst_port,
518
+ sizeof(packet_info.dst_port));
519
+ } else if (packet_info.is_udp &&
520
+ config->hash_types & VIRTIO_NET_RSS_HASH_TYPE_UDPv6) {
521
+
522
+ if (packet_info.is_ipv6_ext_src &&
523
+ config->hash_types & VIRTIO_NET_RSS_HASH_TYPE_UDP_EX) {
524
+
525
+ net_rx_rss_add_chunk(rss_input, &bytes_written,
526
+ &packet_info.in6_ext_src,
527
+ sizeof(packet_info.in6_ext_src));
528
+ } else {
529
+ net_rx_rss_add_chunk(rss_input, &bytes_written,
530
+ &packet_info.in6_src,
531
+ sizeof(packet_info.in6_src));
532
+ }
533
+ if (packet_info.is_ipv6_ext_dst &&
534
+ config->hash_types & VIRTIO_NET_RSS_HASH_TYPE_UDP_EX) {
535
+
536
+ net_rx_rss_add_chunk(rss_input, &bytes_written,
537
+ &packet_info.in6_ext_dst,
538
+ sizeof(packet_info.in6_ext_dst));
539
+ } else {
540
+ net_rx_rss_add_chunk(rss_input, &bytes_written,
541
+ &packet_info.in6_dst,
542
+ sizeof(packet_info.in6_dst));
543
+ }
544
+
545
+ net_rx_rss_add_chunk(rss_input, &bytes_written,
546
+ &packet_info.src_port,
547
+ sizeof(packet_info.src_port));
548
+ net_rx_rss_add_chunk(rss_input, &bytes_written,
549
+ &packet_info.dst_port,
550
+ sizeof(packet_info.dst_port));
551
+
552
+ } else if (config->hash_types & VIRTIO_NET_RSS_HASH_TYPE_IPv6) {
553
+ if (packet_info.is_ipv6_ext_src &&
554
+ config->hash_types & VIRTIO_NET_RSS_HASH_TYPE_IP_EX) {
555
+
556
+ net_rx_rss_add_chunk(rss_input, &bytes_written,
557
+ &packet_info.in6_ext_src,
558
+ sizeof(packet_info.in6_ext_src));
559
+ } else {
560
+ net_rx_rss_add_chunk(rss_input, &bytes_written,
561
+ &packet_info.in6_src,
562
+ sizeof(packet_info.in6_src));
563
+ }
564
+ if (packet_info.is_ipv6_ext_dst &&
565
+ config->hash_types & VIRTIO_NET_RSS_HASH_TYPE_IP_EX) {
566
+
567
+ net_rx_rss_add_chunk(rss_input, &bytes_written,
568
+ &packet_info.in6_ext_dst,
569
+ sizeof(packet_info.in6_ext_dst));
570
+ } else {
571
+ net_rx_rss_add_chunk(rss_input, &bytes_written,
572
+ &packet_info.in6_dst,
573
+ sizeof(packet_info.in6_dst));
574
+ }
575
+ }
576
+ }
577
+
578
+ if (bytes_written) {
579
+ net_toeplitz_add(&result, rss_input, bytes_written, toe);
580
+ }
581
+
582
+ return result;
583
+}
584
+
585
+SEC("tun_rss_steering")
586
+int tun_rss_steering_prog(struct __sk_buff *skb)
587
+{
588
+
589
+ struct rss_config_t *config;
590
+ struct toeplitz_key_data_t *toe;
591
+
592
+ __u32 key = 0;
593
+ __u32 hash = 0;
594
+
595
+ config = bpf_map_lookup_elem(&tap_rss_map_configurations, &key);
596
+ toe = bpf_map_lookup_elem(&tap_rss_map_toeplitz_key, &key);
597
+
598
+ if (config && toe) {
599
+ if (!config->redirect) {
600
+ return config->default_queue;
601
+ }
602
+
603
+ hash = calculate_rss_hash(skb, config, toe);
604
+ if (hash) {
605
+ __u32 table_idx = hash % config->indirections_len;
606
+ __u16 *queue = 0;
607
+
608
+ queue = bpf_map_lookup_elem(&tap_rss_map_indirection_table,
609
+ &table_idx);
610
+
611
+ if (queue) {
612
+ return *queue;
613
+ }
614
+ }
615
+
616
+ return config->default_queue;
617
+ }
618
+
619
+ return -1;
620
+}
621
+
622
+char _license[] SEC("license") = "GPL v2";
623
--
124
--
624
2.7.4
125
2.7.4
625
126
626
127
diff view generated by jsdifflib
[PULL 5/7] virtio-net: Added eBPF RSS to virtio-net.
[PULL 7/8] hw/net: e1000e: Clear ICR on read when using non MSI-X interrupts
1
From: Andrew Melnychenko <andrew@daynix.com>
1
From: Nick Hudson <skrll@netbsd.org>
2
2
3
When RSS is enabled the device tries to load the eBPF program
3
In section 7.4.3 of the 82574 datasheet it states that
4
to select RX virtqueue in the TUN. If eBPF can be loaded
5
the RSS will function also with vhost (works with kernel 5.8 and later).
6
Software RSS is used as a fallback with vhost=off when eBPF can't be loaded
7
or when hash population requested by the guest.
8
4
9
Signed-off-by: Yuri Benditovich <yuri.benditovich@daynix.com>
5
"In systems that do not support MSI-X, reading the ICR
10
Signed-off-by: Andrew Melnychenko <andrew@daynix.com>
6
register clears it's bits..."
7
8
Some OSes rely on this.
9
10
Signed-off-by: Nick Hudson <skrll@netbsd.org>
11
Signed-off-by: Jason Wang <jasowang@redhat.com>
11
Signed-off-by: Jason Wang <jasowang@redhat.com>
12
---
12
---
13
hw/net/vhost_net.c | 3 ++
13
hw/net/e1000e_core.c | 5 +++++
14
hw/net/virtio-net.c | 116 +++++++++++++++++++++++++++++++++++++++--
14
hw/net/trace-events | 1 +
15
include/hw/virtio/virtio-net.h | 4 ++
15
2 files changed, 6 insertions(+)
16
net/vhost-vdpa.c | 2 +
17
4 files changed, 122 insertions(+), 3 deletions(-)
18
16
19
diff --git a/hw/net/vhost_net.c b/hw/net/vhost_net.c
17
diff --git a/hw/net/e1000e_core.c b/hw/net/e1000e_core.c
20
index XXXXXXX..XXXXXXX 100644
18
index XXXXXXX..XXXXXXX 100644
21
--- a/hw/net/vhost_net.c
19
--- a/hw/net/e1000e_core.c
22
+++ b/hw/net/vhost_net.c
20
+++ b/hw/net/e1000e_core.c
23
@@ -XXX,XX +XXX,XX @@ static const int kernel_feature_bits[] = {
21
@@ -XXX,XX +XXX,XX @@ e1000e_mac_icr_read(E1000ECore *core, int index)
24
VIRTIO_NET_F_MTU,
22
core->mac[ICR] = 0;
25
VIRTIO_F_IOMMU_PLATFORM,
26
VIRTIO_F_RING_PACKED,
27
+ VIRTIO_NET_F_HASH_REPORT,
28
VHOST_INVALID_FEATURE_BIT
29
};
30
31
@@ -XXX,XX +XXX,XX @@ static const int user_feature_bits[] = {
32
VIRTIO_NET_F_MTU,
33
VIRTIO_F_IOMMU_PLATFORM,
34
VIRTIO_F_RING_PACKED,
35
+ VIRTIO_NET_F_RSS,
36
+ VIRTIO_NET_F_HASH_REPORT,
37
38
/* This bit implies RARP isn't sent by QEMU out of band */
39
VIRTIO_NET_F_GUEST_ANNOUNCE,
40
diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c
41
index XXXXXXX..XXXXXXX 100644
42
--- a/hw/net/virtio-net.c
43
+++ b/hw/net/virtio-net.c
44
@@ -XXX,XX +XXX,XX @@ static uint64_t virtio_net_get_features(VirtIODevice *vdev, uint64_t features,
45
return features;
46
}
23
}
47
24
48
- virtio_clear_feature(&features, VIRTIO_NET_F_RSS);
25
+ if (!msix_enabled(core->owner)) {
49
- virtio_clear_feature(&features, VIRTIO_NET_F_HASH_REPORT);
26
+ trace_e1000e_irq_icr_clear_nonmsix_icr_read();
50
+ if (!ebpf_rss_is_loaded(&n->ebpf_rss)) {
27
+ core->mac[ICR] = 0;
51
+ virtio_clear_feature(&features, VIRTIO_NET_F_RSS);
52
+ }
53
features = vhost_net_get_features(get_vhost_net(nc->peer), features);
54
vdev->backend_features = features;
55
56
@@ -XXX,XX +XXX,XX @@ static int virtio_net_handle_announce(VirtIONet *n, uint8_t cmd,
57
}
58
}
59
60
+static void virtio_net_detach_epbf_rss(VirtIONet *n);
61
+
62
static void virtio_net_disable_rss(VirtIONet *n)
63
{
64
if (n->rss_data.enabled) {
65
trace_virtio_net_rss_disable();
66
}
67
n->rss_data.enabled = false;
68
+
69
+ virtio_net_detach_epbf_rss(n);
70
+}
71
+
72
+static bool virtio_net_attach_ebpf_to_backend(NICState *nic, int prog_fd)
73
+{
74
+ NetClientState *nc = qemu_get_peer(qemu_get_queue(nic), 0);
75
+ if (nc == NULL || nc->info->set_steering_ebpf == NULL) {
76
+ return false;
77
+ }
28
+ }
78
+
29
+
79
+ return nc->info->set_steering_ebpf(nc, prog_fd);
30
if ((core->mac[ICR] & E1000_ICR_ASSERTED) &&
80
+}
31
(core->mac[CTRL_EXT] & E1000_CTRL_EXT_IAME)) {
81
+
32
trace_e1000e_irq_icr_clear_iame();
82
+static void rss_data_to_rss_config(struct VirtioNetRssData *data,
33
diff --git a/hw/net/trace-events b/hw/net/trace-events
83
+ struct EBPFRSSConfig *config)
84
+{
85
+ config->redirect = data->redirect;
86
+ config->populate_hash = data->populate_hash;
87
+ config->hash_types = data->hash_types;
88
+ config->indirections_len = data->indirections_len;
89
+ config->default_queue = data->default_queue;
90
+}
91
+
92
+static bool virtio_net_attach_epbf_rss(VirtIONet *n)
93
+{
94
+ struct EBPFRSSConfig config = {};
95
+
96
+ if (!ebpf_rss_is_loaded(&n->ebpf_rss)) {
97
+ return false;
98
+ }
99
+
100
+ rss_data_to_rss_config(&n->rss_data, &config);
101
+
102
+ if (!ebpf_rss_set_all(&n->ebpf_rss, &config,
103
+ n->rss_data.indirections_table, n->rss_data.key)) {
104
+ return false;
105
+ }
106
+
107
+ if (!virtio_net_attach_ebpf_to_backend(n->nic, n->ebpf_rss.program_fd)) {
108
+ return false;
109
+ }
110
+
111
+ return true;
112
+}
113
+
114
+static void virtio_net_detach_epbf_rss(VirtIONet *n)
115
+{
116
+ virtio_net_attach_ebpf_to_backend(n->nic, -1);
117
+}
118
+
119
+static bool virtio_net_load_ebpf(VirtIONet *n)
120
+{
121
+ if (!virtio_net_attach_ebpf_to_backend(n->nic, -1)) {
122
+ /* backend does't support steering ebpf */
123
+ return false;
124
+ }
125
+
126
+ return ebpf_rss_load(&n->ebpf_rss);
127
+}
128
+
129
+static void virtio_net_unload_ebpf(VirtIONet *n)
130
+{
131
+ virtio_net_attach_ebpf_to_backend(n->nic, -1);
132
+ ebpf_rss_unload(&n->ebpf_rss);
133
}
134
135
static uint16_t virtio_net_handle_rss(VirtIONet *n,
136
@@ -XXX,XX +XXX,XX @@ static uint16_t virtio_net_handle_rss(VirtIONet *n,
137
goto error;
138
}
139
n->rss_data.enabled = true;
140
+
141
+ if (!n->rss_data.populate_hash) {
142
+ if (!virtio_net_attach_epbf_rss(n)) {
143
+ /* EBPF must be loaded for vhost */
144
+ if (get_vhost_net(qemu_get_queue(n->nic)->peer)) {
145
+ warn_report("Can't load eBPF RSS for vhost");
146
+ goto error;
147
+ }
148
+ /* fallback to software RSS */
149
+ warn_report("Can't load eBPF RSS - fallback to software RSS");
150
+ n->rss_data.enabled_software_rss = true;
151
+ }
152
+ } else {
153
+ /* use software RSS for hash populating */
154
+ /* and detach eBPF if was loaded before */
155
+ virtio_net_detach_epbf_rss(n);
156
+ n->rss_data.enabled_software_rss = true;
157
+ }
158
+
159
trace_virtio_net_rss_enable(n->rss_data.hash_types,
160
n->rss_data.indirections_len,
161
temp.b);
162
@@ -XXX,XX +XXX,XX @@ static ssize_t virtio_net_receive_rcu(NetClientState *nc, const uint8_t *buf,
163
return -1;
164
}
165
166
- if (!no_rss && n->rss_data.enabled) {
167
+ if (!no_rss && n->rss_data.enabled && n->rss_data.enabled_software_rss) {
168
int index = virtio_net_process_rss(nc, buf, size);
169
if (index >= 0) {
170
NetClientState *nc2 = qemu_get_subqueue(n->nic, index);
171
@@ -XXX,XX +XXX,XX @@ static int virtio_net_post_load_device(void *opaque, int version_id)
172
}
173
174
if (n->rss_data.enabled) {
175
+ n->rss_data.enabled_software_rss = n->rss_data.populate_hash;
176
+ if (!n->rss_data.populate_hash) {
177
+ if (!virtio_net_attach_epbf_rss(n)) {
178
+ if (get_vhost_net(qemu_get_queue(n->nic)->peer)) {
179
+ warn_report("Can't post-load eBPF RSS for vhost");
180
+ } else {
181
+ warn_report("Can't post-load eBPF RSS - "
182
+ "fallback to software RSS");
183
+ n->rss_data.enabled_software_rss = true;
184
+ }
185
+ }
186
+ }
187
+
188
trace_virtio_net_rss_enable(n->rss_data.hash_types,
189
n->rss_data.indirections_len,
190
sizeof(n->rss_data.key));
191
@@ -XXX,XX +XXX,XX @@ static void virtio_net_device_realize(DeviceState *dev, Error **errp)
192
n->qdev = dev;
193
194
net_rx_pkt_init(&n->rx_pkt, false);
195
+
196
+ if (virtio_has_feature(n->host_features, VIRTIO_NET_F_RSS)) {
197
+ virtio_net_load_ebpf(n);
198
+ }
199
}
200
201
static void virtio_net_device_unrealize(DeviceState *dev)
202
@@ -XXX,XX +XXX,XX @@ static void virtio_net_device_unrealize(DeviceState *dev)
203
VirtIONet *n = VIRTIO_NET(dev);
204
int i, max_queues;
205
206
+ if (virtio_has_feature(n->host_features, VIRTIO_NET_F_RSS)) {
207
+ virtio_net_unload_ebpf(n);
208
+ }
209
+
210
/* This will stop vhost backend if appropriate. */
211
virtio_net_set_status(vdev, 0);
212
213
@@ -XXX,XX +XXX,XX @@ static void virtio_net_instance_init(Object *obj)
214
device_add_bootindex_property(obj, &n->nic_conf.bootindex,
215
"bootindex", "/ethernet-phy@0",
216
DEVICE(n));
217
+
218
+ ebpf_rss_init(&n->ebpf_rss);
219
}
220
221
static int virtio_net_pre_save(void *opaque)
222
diff --git a/include/hw/virtio/virtio-net.h b/include/hw/virtio/virtio-net.h
223
index XXXXXXX..XXXXXXX 100644
34
index XXXXXXX..XXXXXXX 100644
224
--- a/include/hw/virtio/virtio-net.h
35
--- a/hw/net/trace-events
225
+++ b/include/hw/virtio/virtio-net.h
36
+++ b/hw/net/trace-events
226
@@ -XXX,XX +XXX,XX @@
37
@@ -XXX,XX +XXX,XX @@ e1000e_irq_write_ics(uint32_t val) "Adding ICR bits 0x%x"
227
#include "qemu/option_int.h"
38
e1000e_irq_icr_process_iame(void) "Clearing IMS bits due to IAME"
228
#include "qom/object.h"
39
e1000e_irq_read_ics(uint32_t ics) "Current ICS: 0x%x"
229
40
e1000e_irq_read_ims(uint32_t ims) "Current IMS: 0x%x"
230
+#include "ebpf/ebpf_rss.h"
41
+e1000e_irq_icr_clear_nonmsix_icr_read(void) "Clearing ICR on read due to non MSI-X int"
231
+
42
e1000e_irq_icr_read_entry(uint32_t icr) "Starting ICR read. Current ICR: 0x%x"
232
#define TYPE_VIRTIO_NET "virtio-net-device"
43
e1000e_irq_icr_read_exit(uint32_t icr) "Ending ICR read. Current ICR: 0x%x"
233
OBJECT_DECLARE_SIMPLE_TYPE(VirtIONet, VIRTIO_NET)
44
e1000e_irq_icr_clear_zero_ims(void) "Clearing ICR on read due to zero IMS"
234
235
@@ -XXX,XX +XXX,XX @@ typedef struct VirtioNetRscChain {
236
237
typedef struct VirtioNetRssData {
238
bool enabled;
239
+ bool enabled_software_rss;
240
bool redirect;
241
bool populate_hash;
242
uint32_t hash_types;
243
@@ -XXX,XX +XXX,XX @@ struct VirtIONet {
244
Notifier migration_state;
245
VirtioNetRssData rss_data;
246
struct NetRxPkt *rx_pkt;
247
+ struct EBPFRSSContext ebpf_rss;
248
};
249
250
void virtio_net_set_netclient_name(VirtIONet *n, const char *name,
251
diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c
252
index XXXXXXX..XXXXXXX 100644
253
--- a/net/vhost-vdpa.c
254
+++ b/net/vhost-vdpa.c
255
@@ -XXX,XX +XXX,XX @@ const int vdpa_feature_bits[] = {
256
VIRTIO_NET_F_MTU,
257
VIRTIO_F_IOMMU_PLATFORM,
258
VIRTIO_F_RING_PACKED,
259
+ VIRTIO_NET_F_RSS,
260
+ VIRTIO_NET_F_HASH_REPORT,
261
VIRTIO_NET_F_GUEST_ANNOUNCE,
262
VIRTIO_NET_F_STATUS,
263
VHOST_INVALID_FEATURE_BIT
264
--
45
--
265
2.7.4
46
2.7.4
266
47
267
48
diff view generated by jsdifflib
[PULL 4/7] ebpf: Added eBPF RSS loader.
[PULL 8/8] net/eth: Don't consider ESP to be an IPv6 option header
1
From: Andrew Melnychenko <andrew@daynix.com>
1
From: Thomas Jansen <mithi@mithi.net>
2
2
3
Added function that loads RSS eBPF program.
3
The IPv6 option headers all have in common that they start with some
4
Added stub functions for RSS eBPF loader.
4
common fields, in particular the type of the next header followed by the
5
Added meson and configuration options.
5
extention header length. This is used to traverse the list of the
6
options. The ESP header does not follow that format, which can break the
7
IPv6 option header traversal code in eth_parse_ipv6_hdr().
6
8
7
By default, eBPF feature enabled if libbpf is present in the build system.
9
The effect of that is that network interfaces such as vmxnet3 that use
8
libbpf checked in configuration shell script and meson script.
10
the following call chain
11
eth_is_ip6_extension_header_type
12
eth_parse_ipv6_hdr
13
net_tx_pkt_parse_headers
14
net_tx_pkt_parse
15
vmxnet3_process_tx_queue
16
to send packets from the VM out to the host will drop packets of the
17
following structure:
18
Ethernet-Header(IPv6-Header(ESP(encrypted data)))
9
19
10
Signed-off-by: Yuri Benditovich <yuri.benditovich@daynix.com>
20
Note that not all types of network interfaces use the net_tx_pkt_parse
11
Signed-off-by: Andrew Melnychenko <andrew@daynix.com>
21
function though, leading to inconsistent behavior regarding sending
22
those packets. The e1000 network interface for example does not suffer
23
from this limitation.
24
25
By not considering ESP to be an IPv6 header we can allow sending those
26
packets out to the host on all types of network interfaces.
27
28
Fixes: 75020a702151 ("Common definitions for VMWARE devices")
29
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/149
30
Buglink: https://bugs.launchpad.net/qemu/+bug/1758091
31
Signed-off-by: Thomas Jansen <mithi@mithi.net>
12
Signed-off-by: Jason Wang <jasowang@redhat.com>
32
Signed-off-by: Jason Wang <jasowang@redhat.com>
13
---
33
---
14
configure | 8 +-
34
net/eth.c | 1 -
15
ebpf/ebpf_rss-stub.c | 40 +++++
35
1 file changed, 1 deletion(-)
16
ebpf/ebpf_rss.c | 165 ++++++++++++++++++
17
ebpf/ebpf_rss.h | 44 +++++
18
ebpf/meson.build | 1 +
19
ebpf/rss.bpf.skeleton.h | 431 ++++++++++++++++++++++++++++++++++++++++++++++++
20
ebpf/trace-events | 4 +
21
ebpf/trace.h | 1 +
22
meson.build | 23 +++
23
meson_options.txt | 2 +
24
10 files changed, 718 insertions(+), 1 deletion(-)
25
create mode 100644 ebpf/ebpf_rss-stub.c
26
create mode 100644 ebpf/ebpf_rss.c
27
create mode 100644 ebpf/ebpf_rss.h
28
create mode 100644 ebpf/meson.build
29
create mode 100644 ebpf/rss.bpf.skeleton.h
30
create mode 100644 ebpf/trace-events
31
create mode 100644 ebpf/trace.h
32
36
33
diff --git a/configure b/configure
37
diff --git a/net/eth.c b/net/eth.c
34
index XXXXXXX..XXXXXXX 100755
35
--- a/configure
36
+++ b/configure
37
@@ -XXX,XX +XXX,XX @@ vhost_vsock="$default_feature"
38
vhost_user="no"
39
vhost_user_blk_server="auto"
40
vhost_user_fs="$default_feature"
41
+bpf="auto"
42
kvm="auto"
43
hax="auto"
44
hvf="auto"
45
@@ -XXX,XX +XXX,XX @@ for opt do
46
;;
47
--enable-membarrier) membarrier="yes"
48
;;
49
+ --disable-bpf) bpf="disabled"
50
+ ;;
51
+ --enable-bpf) bpf="enabled"
52
+ ;;
53
--disable-blobs) blobs="false"
54
;;
55
--with-pkgversion=*) pkgversion="$optarg"
56
@@ -XXX,XX +XXX,XX @@ disabled with --disable-FEATURE, default is enabled if available
57
vhost-user vhost-user backend support
58
vhost-user-blk-server vhost-user-blk server support
59
vhost-vdpa vhost-vdpa kernel backend support
60
+ bpf BPF kernel support
61
spice spice
62
spice-protocol spice-protocol
63
rbd rados block device (rbd)
64
@@ -XXX,XX +XXX,XX @@ if test "$skip_meson" = no; then
65
-Dattr=$attr -Ddefault_devices=$default_devices \
66
-Ddocs=$docs -Dsphinx_build=$sphinx_build -Dinstall_blobs=$blobs \
67
-Dvhost_user_blk_server=$vhost_user_blk_server -Dmultiprocess=$multiprocess \
68
- -Dfuse=$fuse -Dfuse_lseek=$fuse_lseek -Dguest_agent_msi=$guest_agent_msi \
69
+ -Dfuse=$fuse -Dfuse_lseek=$fuse_lseek -Dguest_agent_msi=$guest_agent_msi -Dbpf=$bpf\
70
$(if test "$default_features" = no; then echo "-Dauto_features=disabled"; fi) \
71
    -Dtcg_interpreter=$tcg_interpreter \
72
$cross_arg \
73
diff --git a/ebpf/ebpf_rss-stub.c b/ebpf/ebpf_rss-stub.c
74
new file mode 100644
75
index XXXXXXX..XXXXXXX
76
--- /dev/null
77
+++ b/ebpf/ebpf_rss-stub.c
78
@@ -XXX,XX +XXX,XX @@
79
+/*
80
+ * eBPF RSS stub file
81
+ *
82
+ * Developed by Daynix Computing LTD (http://www.daynix.com)
83
+ *
84
+ * Authors:
85
+ * Yuri Benditovich <yuri.benditovich@daynix.com>
86
+ *
87
+ * This work is licensed under the terms of the GNU GPL, version 2. See
88
+ * the COPYING file in the top-level directory.
89
+ */
90
+
91
+#include "qemu/osdep.h"
92
+#include "ebpf/ebpf_rss.h"
93
+
94
+void ebpf_rss_init(struct EBPFRSSContext *ctx)
95
+{
96
+
97
+}
98
+
99
+bool ebpf_rss_is_loaded(struct EBPFRSSContext *ctx)
100
+{
101
+ return false;
102
+}
103
+
104
+bool ebpf_rss_load(struct EBPFRSSContext *ctx)
105
+{
106
+ return false;
107
+}
108
+
109
+bool ebpf_rss_set_all(struct EBPFRSSContext *ctx, struct EBPFRSSConfig *config,
110
+ uint16_t *indirections_table, uint8_t *toeplitz_key)
111
+{
112
+ return false;
113
+}
114
+
115
+void ebpf_rss_unload(struct EBPFRSSContext *ctx)
116
+{
117
+
118
+}
119
diff --git a/ebpf/ebpf_rss.c b/ebpf/ebpf_rss.c
120
new file mode 100644
121
index XXXXXXX..XXXXXXX
122
--- /dev/null
123
+++ b/ebpf/ebpf_rss.c
124
@@ -XXX,XX +XXX,XX @@
125
+/*
126
+ * eBPF RSS loader
127
+ *
128
+ * Developed by Daynix Computing LTD (http://www.daynix.com)
129
+ *
130
+ * Authors:
131
+ * Andrew Melnychenko <andrew@daynix.com>
132
+ * Yuri Benditovich <yuri.benditovich@daynix.com>
133
+ *
134
+ * This work is licensed under the terms of the GNU GPL, version 2. See
135
+ * the COPYING file in the top-level directory.
136
+ */
137
+
138
+#include "qemu/osdep.h"
139
+#include "qemu/error-report.h"
140
+
141
+#include <bpf/libbpf.h>
142
+#include <bpf/bpf.h>
143
+
144
+#include "hw/virtio/virtio-net.h" /* VIRTIO_NET_RSS_MAX_TABLE_LEN */
145
+
146
+#include "ebpf/ebpf_rss.h"
147
+#include "ebpf/rss.bpf.skeleton.h"
148
+#include "trace.h"
149
+
150
+void ebpf_rss_init(struct EBPFRSSContext *ctx)
151
+{
152
+ if (ctx != NULL) {
153
+ ctx->obj = NULL;
154
+ }
155
+}
156
+
157
+bool ebpf_rss_is_loaded(struct EBPFRSSContext *ctx)
158
+{
159
+ return ctx != NULL && ctx->obj != NULL;
160
+}
161
+
162
+bool ebpf_rss_load(struct EBPFRSSContext *ctx)
163
+{
164
+ struct rss_bpf *rss_bpf_ctx;
165
+
166
+ if (ctx == NULL) {
167
+ return false;
168
+ }
169
+
170
+ rss_bpf_ctx = rss_bpf__open();
171
+ if (rss_bpf_ctx == NULL) {
172
+ trace_ebpf_error("eBPF RSS", "can not open eBPF RSS object");
173
+ goto error;
174
+ }
175
+
176
+ bpf_program__set_socket_filter(rss_bpf_ctx->progs.tun_rss_steering_prog);
177
+
178
+ if (rss_bpf__load(rss_bpf_ctx)) {
179
+ trace_ebpf_error("eBPF RSS", "can not load RSS program");
180
+ goto error;
181
+ }
182
+
183
+ ctx->obj = rss_bpf_ctx;
184
+ ctx->program_fd = bpf_program__fd(
185
+ rss_bpf_ctx->progs.tun_rss_steering_prog);
186
+ ctx->map_configuration = bpf_map__fd(
187
+ rss_bpf_ctx->maps.tap_rss_map_configurations);
188
+ ctx->map_indirections_table = bpf_map__fd(
189
+ rss_bpf_ctx->maps.tap_rss_map_indirection_table);
190
+ ctx->map_toeplitz_key = bpf_map__fd(
191
+ rss_bpf_ctx->maps.tap_rss_map_toeplitz_key);
192
+
193
+ return true;
194
+error:
195
+ rss_bpf__destroy(rss_bpf_ctx);
196
+ ctx->obj = NULL;
197
+
198
+ return false;
199
+}
200
+
201
+static bool ebpf_rss_set_config(struct EBPFRSSContext *ctx,
202
+ struct EBPFRSSConfig *config)
203
+{
204
+ uint32_t map_key = 0;
205
+
206
+ if (!ebpf_rss_is_loaded(ctx)) {
207
+ return false;
208
+ }
209
+ if (bpf_map_update_elem(ctx->map_configuration,
210
+ &map_key, config, 0) < 0) {
211
+ return false;
212
+ }
213
+ return true;
214
+}
215
+
216
+static bool ebpf_rss_set_indirections_table(struct EBPFRSSContext *ctx,
217
+ uint16_t *indirections_table,
218
+ size_t len)
219
+{
220
+ uint32_t i = 0;
221
+
222
+ if (!ebpf_rss_is_loaded(ctx) || indirections_table == NULL ||
223
+ len > VIRTIO_NET_RSS_MAX_TABLE_LEN) {
224
+ return false;
225
+ }
226
+
227
+ for (; i < len; ++i) {
228
+ if (bpf_map_update_elem(ctx->map_indirections_table, &i,
229
+ indirections_table + i, 0) < 0) {
230
+ return false;
231
+ }
232
+ }
233
+ return true;
234
+}
235
+
236
+static bool ebpf_rss_set_toepliz_key(struct EBPFRSSContext *ctx,
237
+ uint8_t *toeplitz_key)
238
+{
239
+ uint32_t map_key = 0;
240
+
241
+ /* prepare toeplitz key */
242
+ uint8_t toe[VIRTIO_NET_RSS_MAX_KEY_SIZE] = {};
243
+
244
+ if (!ebpf_rss_is_loaded(ctx) || toeplitz_key == NULL) {
245
+ return false;
246
+ }
247
+ memcpy(toe, toeplitz_key, VIRTIO_NET_RSS_MAX_KEY_SIZE);
248
+ *(uint32_t *)toe = ntohl(*(uint32_t *)toe);
249
+
250
+ if (bpf_map_update_elem(ctx->map_toeplitz_key, &map_key, toe,
251
+ 0) < 0) {
252
+ return false;
253
+ }
254
+ return true;
255
+}
256
+
257
+bool ebpf_rss_set_all(struct EBPFRSSContext *ctx, struct EBPFRSSConfig *config,
258
+ uint16_t *indirections_table, uint8_t *toeplitz_key)
259
+{
260
+ if (!ebpf_rss_is_loaded(ctx) || config == NULL ||
261
+ indirections_table == NULL || toeplitz_key == NULL) {
262
+ return false;
263
+ }
264
+
265
+ if (!ebpf_rss_set_config(ctx, config)) {
266
+ return false;
267
+ }
268
+
269
+ if (!ebpf_rss_set_indirections_table(ctx, indirections_table,
270
+ config->indirections_len)) {
271
+ return false;
272
+ }
273
+
274
+ if (!ebpf_rss_set_toepliz_key(ctx, toeplitz_key)) {
275
+ return false;
276
+ }
277
+
278
+ return true;
279
+}
280
+
281
+void ebpf_rss_unload(struct EBPFRSSContext *ctx)
282
+{
283
+ if (!ebpf_rss_is_loaded(ctx)) {
284
+ return;
285
+ }
286
+
287
+ rss_bpf__destroy(ctx->obj);
288
+ ctx->obj = NULL;
289
+}
290
diff --git a/ebpf/ebpf_rss.h b/ebpf/ebpf_rss.h
291
new file mode 100644
292
index XXXXXXX..XXXXXXX
293
--- /dev/null
294
+++ b/ebpf/ebpf_rss.h
295
@@ -XXX,XX +XXX,XX @@
296
+/*
297
+ * eBPF RSS header
298
+ *
299
+ * Developed by Daynix Computing LTD (http://www.daynix.com)
300
+ *
301
+ * Authors:
302
+ * Andrew Melnychenko <andrew@daynix.com>
303
+ * Yuri Benditovich <yuri.benditovich@daynix.com>
304
+ *
305
+ * This work is licensed under the terms of the GNU GPL, version 2. See
306
+ * the COPYING file in the top-level directory.
307
+ */
308
+
309
+#ifndef QEMU_EBPF_RSS_H
310
+#define QEMU_EBPF_RSS_H
311
+
312
+struct EBPFRSSContext {
313
+ void *obj;
314
+ int program_fd;
315
+ int map_configuration;
316
+ int map_toeplitz_key;
317
+ int map_indirections_table;
318
+};
319
+
320
+struct EBPFRSSConfig {
321
+ uint8_t redirect;
322
+ uint8_t populate_hash;
323
+ uint32_t hash_types;
324
+ uint16_t indirections_len;
325
+ uint16_t default_queue;
326
+} __attribute__((packed));
327
+
328
+void ebpf_rss_init(struct EBPFRSSContext *ctx);
329
+
330
+bool ebpf_rss_is_loaded(struct EBPFRSSContext *ctx);
331
+
332
+bool ebpf_rss_load(struct EBPFRSSContext *ctx);
333
+
334
+bool ebpf_rss_set_all(struct EBPFRSSContext *ctx, struct EBPFRSSConfig *config,
335
+ uint16_t *indirections_table, uint8_t *toeplitz_key);
336
+
337
+void ebpf_rss_unload(struct EBPFRSSContext *ctx);
338
+
339
+#endif /* QEMU_EBPF_RSS_H */
340
diff --git a/ebpf/meson.build b/ebpf/meson.build
341
new file mode 100644
342
index XXXXXXX..XXXXXXX
343
--- /dev/null
344
+++ b/ebpf/meson.build
345
@@ -0,0 +1 @@
346
+common_ss.add(when: libbpf, if_true: files('ebpf_rss.c'), if_false: files('ebpf_rss-stub.c'))
347
diff --git a/ebpf/rss.bpf.skeleton.h b/ebpf/rss.bpf.skeleton.h
348
new file mode 100644
349
index XXXXXXX..XXXXXXX
350
--- /dev/null
351
+++ b/ebpf/rss.bpf.skeleton.h
352
@@ -XXX,XX +XXX,XX @@
353
+/* SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) */
354
+
355
+/* THIS FILE IS AUTOGENERATED! */
356
+#ifndef __RSS_BPF_SKEL_H__
357
+#define __RSS_BPF_SKEL_H__
358
+
359
+#include <stdlib.h>
360
+#include <bpf/libbpf.h>
361
+
362
+struct rss_bpf {
363
+    struct bpf_object_skeleton *skeleton;
364
+    struct bpf_object *obj;
365
+    struct {
366
+        struct bpf_map *tap_rss_map_configurations;
367
+        struct bpf_map *tap_rss_map_indirection_table;
368
+        struct bpf_map *tap_rss_map_toeplitz_key;
369
+    } maps;
370
+    struct {
371
+        struct bpf_program *tun_rss_steering_prog;
372
+    } progs;
373
+    struct {
374
+        struct bpf_link *tun_rss_steering_prog;
375
+    } links;
376
+};
377
+
378
+static void
379
+rss_bpf__destroy(struct rss_bpf *obj)
380
+{
381
+    if (!obj)
382
+        return;
383
+    if (obj->skeleton)
384
+        bpf_object__destroy_skeleton(obj->skeleton);
385
+    free(obj);
386
+}
387
+
388
+static inline int
389
+rss_bpf__create_skeleton(struct rss_bpf *obj);
390
+
391
+static inline struct rss_bpf *
392
+rss_bpf__open_opts(const struct bpf_object_open_opts *opts)
393
+{
394
+    struct rss_bpf *obj;
395
+
396
+    obj = (struct rss_bpf *)calloc(1, sizeof(*obj));
397
+    if (!obj)
398
+        return NULL;
399
+    if (rss_bpf__create_skeleton(obj))
400
+        goto err;
401
+    if (bpf_object__open_skeleton(obj->skeleton, opts))
402
+        goto err;
403
+
404
+    return obj;
405
+err:
406
+    rss_bpf__destroy(obj);
407
+    return NULL;
408
+}
409
+
410
+static inline struct rss_bpf *
411
+rss_bpf__open(void)
412
+{
413
+    return rss_bpf__open_opts(NULL);
414
+}
415
+
416
+static inline int
417
+rss_bpf__load(struct rss_bpf *obj)
418
+{
419
+    return bpf_object__load_skeleton(obj->skeleton);
420
+}
421
+
422
+static inline struct rss_bpf *
423
+rss_bpf__open_and_load(void)
424
+{
425
+    struct rss_bpf *obj;
426
+
427
+    obj = rss_bpf__open();
428
+    if (!obj)
429
+        return NULL;
430
+    if (rss_bpf__load(obj)) {
431
+        rss_bpf__destroy(obj);
432
+        return NULL;
433
+    }
434
+    return obj;
435
+}
436
+
437
+static inline int
438
+rss_bpf__attach(struct rss_bpf *obj)
439
+{
440
+    return bpf_object__attach_skeleton(obj->skeleton);
441
+}
442
+
443
+static inline void
444
+rss_bpf__detach(struct rss_bpf *obj)
445
+{
446
+    return bpf_object__detach_skeleton(obj->skeleton);
447
+}
448
+
449
+static inline int
450
+rss_bpf__create_skeleton(struct rss_bpf *obj)
451
+{
452
+    struct bpf_object_skeleton *s;
453
+
454
+    s = (struct bpf_object_skeleton *)calloc(1, sizeof(*s));
455
+    if (!s)
456
+        return -1;
457
+    obj->skeleton = s;
458
+
459
+    s->sz = sizeof(*s);
460
+    s->name = "rss_bpf";
461
+    s->obj = &obj->obj;
462
+
463
+    /* maps */
464
+    s->map_cnt = 3;
465
+    s->map_skel_sz = sizeof(*s->maps);
466
+    s->maps = (struct bpf_map_skeleton *)calloc(s->map_cnt, s->map_skel_sz);
467
+    if (!s->maps)
468
+        goto err;
469
+
470
+    s->maps[0].name = "tap_rss_map_configurations";
471
+    s->maps[0].map = &obj->maps.tap_rss_map_configurations;
472
+
473
+    s->maps[1].name = "tap_rss_map_indirection_table";
474
+    s->maps[1].map = &obj->maps.tap_rss_map_indirection_table;
475
+
476
+    s->maps[2].name = "tap_rss_map_toeplitz_key";
477
+    s->maps[2].map = &obj->maps.tap_rss_map_toeplitz_key;
478
+
479
+    /* programs */
480
+    s->prog_cnt = 1;
481
+    s->prog_skel_sz = sizeof(*s->progs);
482
+    s->progs = (struct bpf_prog_skeleton *)calloc(s->prog_cnt, s->prog_skel_sz);
483
+    if (!s->progs)
484
+        goto err;
485
+
486
+    s->progs[0].name = "tun_rss_steering_prog";
487
+    s->progs[0].prog = &obj->progs.tun_rss_steering_prog;
488
+    s->progs[0].link = &obj->links.tun_rss_steering_prog;
489
+
490
+    s->data_sz = 8088;
491
+    s->data = (void *)"\
492
+\x7f\x45\x4c\x46\x02\x01\x01\0\0\0\0\0\0\0\0\0\x01\0\xf7\0\x01\0\0\0\0\0\0\0\0\
493
+\0\0\0\0\0\0\0\0\0\0\0\x18\x1d\0\0\0\0\0\0\0\0\0\0\x40\0\0\0\0\0\x40\0\x0a\0\
494
+\x01\0\xbf\x18\0\0\0\0\0\0\xb7\x01\0\0\0\0\0\0\x63\x1a\x4c\xff\0\0\0\0\xbf\xa7\
495
+\0\0\0\0\0\0\x07\x07\0\0\x4c\xff\xff\xff\x18\x01\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
496
+\xbf\x72\0\0\0\0\0\0\x85\0\0\0\x01\0\0\0\xbf\x06\0\0\0\0\0\0\x18\x01\0\0\0\0\0\
497
+\0\0\0\0\0\0\0\0\0\xbf\x72\0\0\0\0\0\0\x85\0\0\0\x01\0\0\0\xbf\x07\0\0\0\0\0\0\
498
+\x18\0\0\0\xff\xff\xff\xff\0\0\0\0\0\0\0\0\x15\x06\x66\x02\0\0\0\0\xbf\x79\0\0\
499
+\0\0\0\0\x15\x09\x64\x02\0\0\0\0\x71\x61\0\0\0\0\0\0\x55\x01\x01\0\0\0\0\0\x05\
500
+\0\x5d\x02\0\0\0\0\xb7\x01\0\0\0\0\0\0\x63\x1a\xc0\xff\0\0\0\0\x7b\x1a\xb8\xff\
501
+\0\0\0\0\x7b\x1a\xb0\xff\0\0\0\0\x7b\x1a\xa8\xff\0\0\0\0\x7b\x1a\xa0\xff\0\0\0\
502
+\0\x63\x1a\x98\xff\0\0\0\0\x7b\x1a\x90\xff\0\0\0\0\x7b\x1a\x88\xff\0\0\0\0\x7b\
503
+\x1a\x80\xff\0\0\0\0\x7b\x1a\x78\xff\0\0\0\0\x7b\x1a\x70\xff\0\0\0\0\x7b\x1a\
504
+\x68\xff\0\0\0\0\x7b\x1a\x60\xff\0\0\0\0\x7b\x1a\x58\xff\0\0\0\0\x7b\x1a\x50\
505
+\xff\0\0\0\0\x15\x08\x4c\x02\0\0\0\0\x6b\x1a\xd0\xff\0\0\0\0\xbf\xa3\0\0\0\0\0\
506
+\0\x07\x03\0\0\xd0\xff\xff\xff\xbf\x81\0\0\0\0\0\0\xb7\x02\0\0\x0c\0\0\0\xb7\
507
+\x04\0\0\x02\0\0\0\xb7\x05\0\0\0\0\0\0\x85\0\0\0\x44\0\0\0\x67\0\0\0\x20\0\0\0\
508
+\x77\0\0\0\x20\0\0\0\x55\0\x11\0\0\0\0\0\xb7\x02\0\0\x10\0\0\0\x69\xa1\xd0\xff\
509
+\0\0\0\0\xbf\x13\0\0\0\0\0\0\xdc\x03\0\0\x10\0\0\0\x15\x03\x02\0\0\x81\0\0\x55\
510
+\x03\x0c\0\xa8\x88\0\0\xb7\x02\0\0\x14\0\0\0\xbf\xa3\0\0\0\0\0\0\x07\x03\0\0\
511
+\xd0\xff\xff\xff\xbf\x81\0\0\0\0\0\0\xb7\x04\0\0\x02\0\0\0\xb7\x05\0\0\0\0\0\0\
512
+\x85\0\0\0\x44\0\0\0\x69\xa1\xd0\xff\0\0\0\0\x67\0\0\0\x20\0\0\0\x77\0\0\0\x20\
513
+\0\0\0\x15\0\x01\0\0\0\0\0\x05\0\x2f\x02\0\0\0\0\x15\x01\x2e\x02\0\0\0\0\x7b\
514
+\x9a\x30\xff\0\0\0\0\x15\x01\x57\0\x86\xdd\0\0\x55\x01\x3b\0\x08\0\0\0\x7b\x7a\
515
+\x20\xff\0\0\0\0\xb7\x07\0\0\x01\0\0\0\x73\x7a\x50\xff\0\0\0\0\xb7\x01\0\0\0\0\
516
+\0\0\x63\x1a\xe0\xff\0\0\0\0\x7b\x1a\xd8\xff\0\0\0\0\x7b\x1a\xd0\xff\0\0\0\0\
517
+\xbf\xa3\0\0\0\0\0\0\x07\x03\0\0\xd0\xff\xff\xff\xbf\x81\0\0\0\0\0\0\xb7\x02\0\
518
+\0\0\0\0\0\xb7\x04\0\0\x14\0\0\0\xb7\x05\0\0\x01\0\0\0\x85\0\0\0\x44\0\0\0\x67\
519
+\0\0\0\x20\0\0\0\x77\0\0\0\x20\0\0\0\x55\0\x1a\x02\0\0\0\0\x69\xa1\xd6\xff\0\0\
520
+\0\0\x55\x01\x01\0\0\0\0\0\xb7\x07\0\0\0\0\0\0\x61\xa1\xdc\xff\0\0\0\0\x63\x1a\
521
+\x5c\xff\0\0\0\0\x61\xa1\xe0\xff\0\0\0\0\x63\x1a\x60\xff\0\0\0\0\x73\x7a\x56\
522
+\xff\0\0\0\0\x71\xa9\xd9\xff\0\0\0\0\x71\xa1\xd0\xff\0\0\0\0\x67\x01\0\0\x02\0\
523
+\0\0\x57\x01\0\0\x3c\0\0\0\x7b\x1a\x40\xff\0\0\0\0\x79\xa7\x20\xff\0\0\0\0\xbf\
524
+\x91\0\0\0\0\0\0\x57\x01\0\0\xff\0\0\0\x15\x01\x19\0\0\0\0\0\x71\xa1\x56\xff\0\
525
+\0\0\0\x55\x01\x17\0\0\0\0\0\x57\x09\0\0\xff\0\0\0\x15\x09\x7a\x01\x11\0\0\0\
526
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527
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528
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529
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530
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531
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532
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533
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534
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535
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536
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537
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538
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539
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540
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541
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542
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543
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544
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545
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546
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547
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548
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549
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550
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551
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552
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553
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554
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555
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556
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557
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558
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559
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560
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561
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562
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563
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564
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565
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566
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567
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568
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569
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570
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571
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572
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573
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574
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575
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576
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577
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578
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579
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580
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581
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582
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583
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584
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585
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586
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587
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588
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589
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590
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591
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592
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593
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594
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595
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596
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597
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598
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599
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600
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601
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602
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603
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604
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605
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606
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607
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608
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609
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610
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611
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612
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613
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614
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615
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616
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617
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618
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619
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620
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621
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622
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623
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624
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625
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626
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627
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628
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629
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630
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631
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632
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633
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634
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635
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636
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637
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638
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667
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669
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671
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672
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710
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715
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727
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730
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731
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735
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737
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742
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744
+\x42\x42\x30\x5f\x31\x30\x36\0\x4c\x42\x42\x30\x5f\x36\x35\0\x4c\x42\x42\x30\
745
+\x5f\x34\x35\0\x4c\x42\x42\x30\x5f\x33\x35\0\x4c\x42\x42\x30\x5f\x34\0\x4c\x42\
746
+\x42\x30\x5f\x35\x34\0\x4c\x42\x42\x30\x5f\x34\x34\0\x4c\x42\x42\x30\x5f\x32\
747
+\x34\0\x4c\x42\x42\x30\x5f\x31\x30\x34\0\x4c\x42\x42\x30\x5f\x39\x33\0\x4c\x42\
748
+\x42\x30\x5f\x38\x33\0\x4c\x42\x42\x30\x5f\x35\x33\0\x4c\x42\x42\x30\x5f\x34\
749
+\x33\0\x4c\x42\x42\x30\x5f\x32\x33\0\x4c\x42\x42\x30\x5f\x31\x30\x33\0\x4c\x42\
750
+\x42\x30\x5f\x38\x32\0\x4c\x42\x42\x30\x5f\x35\x32\0\x4c\x42\x42\x30\x5f\x31\
751
+\x30\x32\0\x4c\x42\x42\x30\x5f\x39\x31\0\x4c\x42\x42\x30\x5f\x38\x31\0\x4c\x42\
752
+\x42\x30\x5f\x37\x31\0\x4c\x42\x42\x30\x5f\x36\x31\0\x4c\x42\x42\x30\x5f\x35\
753
+\x31\0\x4c\x42\x42\x30\x5f\x34\x31\0\x4c\x42\x42\x30\x5f\x32\x31\0\x4c\x42\x42\
754
+\x30\x5f\x31\x31\0\x4c\x42\x42\x30\x5f\x31\x31\x31\0\x4c\x42\x42\x30\x5f\x31\
755
+\x30\x31\0\x4c\x42\x42\x30\x5f\x38\x30\0\x4c\x42\x42\x30\x5f\x36\x30\0\x4c\x42\
756
+\x42\x30\x5f\x35\x30\0\x4c\x42\x42\x30\x5f\x31\x30\0\x4c\x42\x42\x30\x5f\x31\
757
+\x31\x30\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
758
+\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\xaa\
759
+\0\0\0\x03\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\xa0\x1a\0\0\0\0\0\0\x71\x02\0\
760
+\0\0\0\0\0\0\0\0\0\0\0\0\0\x01\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x1a\0\0\0\x01\0\0\
761
+\0\x06\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x40\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
762
+\0\0\0\0\x04\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x5a\0\0\0\x01\0\0\0\x06\0\0\0\0\0\0\
763
+\0\0\0\0\0\0\0\0\0\x40\0\0\0\0\0\0\0\xd8\x13\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x08\0\
764
+\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x56\0\0\0\x09\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
765
+\0\x60\x1a\0\0\0\0\0\0\x30\0\0\0\0\0\0\0\x09\0\0\0\x03\0\0\0\x08\0\0\0\0\0\0\0\
766
+\x10\0\0\0\0\0\0\0\x20\0\0\0\x01\0\0\0\x03\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x18\
767
+\x14\0\0\0\0\0\0\x3c\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x04\0\0\0\0\0\0\0\0\0\0\0\0\
768
+\0\0\0\x6c\0\0\0\x01\0\0\0\x03\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x54\x14\0\0\0\0\0\
769
+\0\x07\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x01\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x78\0\0\
770
+\0\x01\0\0\0\x02\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x60\x14\0\0\0\0\0\0\x30\0\0\0\0\
771
+\0\0\0\0\0\0\0\0\0\0\0\x08\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x74\0\0\0\x09\0\0\0\0\
772
+\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x90\x1a\0\0\0\0\0\0\x10\0\0\0\0\0\0\0\x09\0\0\0\
773
+\x07\0\0\0\x08\0\0\0\0\0\0\0\x10\0\0\0\0\0\0\0\xb2\0\0\0\x02\0\0\0\0\0\0\0\0\0\
774
+\0\0\0\0\0\0\0\0\0\0\x90\x14\0\0\0\0\0\0\xd0\x05\0\0\0\0\0\0\x01\0\0\0\x39\0\0\
775
+\0\x08\0\0\0\0\0\0\0\x18\0\0\0\0\0\0\0";
776
+
777
+    return 0;
778
+err:
779
+    bpf_object__destroy_skeleton(s);
780
+    return -1;
781
+}
782
+
783
+#endif /* __RSS_BPF_SKEL_H__ */
784
diff --git a/ebpf/trace-events b/ebpf/trace-events
785
new file mode 100644
786
index XXXXXXX..XXXXXXX
787
--- /dev/null
788
+++ b/ebpf/trace-events
789
@@ -XXX,XX +XXX,XX @@
790
+# See docs/devel/tracing.txt for syntax documentation.
791
+
792
+# ebpf-rss.c
793
+ebpf_error(const char *s1, const char *s2) "error in %s: %s"
794
diff --git a/ebpf/trace.h b/ebpf/trace.h
795
new file mode 100644
796
index XXXXXXX..XXXXXXX
797
--- /dev/null
798
+++ b/ebpf/trace.h
799
@@ -0,0 +1 @@
800
+#include "trace/trace-ebpf.h"
801
diff --git a/meson.build b/meson.build
802
index XXXXXXX..XXXXXXX 100644
38
index XXXXXXX..XXXXXXX 100644
803
--- a/meson.build
39
--- a/net/eth.c
804
+++ b/meson.build
40
+++ b/net/eth.c
805
@@ -XXX,XX +XXX,XX @@ if not get_option('fuse_lseek').disabled()
41
@@ -XXX,XX +XXX,XX @@ eth_is_ip6_extension_header_type(uint8_t hdr_type)
806
endif
42
case IP6_HOP_BY_HOP:
807
endif
43
case IP6_ROUTING:
808
44
case IP6_FRAGMENT:
809
+# libbpf
45
- case IP6_ESP:
810
+libbpf = dependency('libbpf', required: get_option('bpf'), method: 'pkg-config')
46
case IP6_AUTHENTICATION:
811
+if libbpf.found() and not cc.links('''
47
case IP6_DESTINATON:
812
+ #include <bpf/libbpf.h>
48
case IP6_MOBILITY:
813
+ int main(void)
814
+ {
815
+ bpf_object__destroy_skeleton(NULL);
816
+ return 0;
817
+ }''', dependencies: libbpf)
818
+ libbpf = not_found
819
+ if get_option('bpf').enabled()
820
+ error('libbpf skeleton test failed')
821
+ else
822
+ warning('libbpf skeleton test failed, disabling')
823
+ endif
824
+endif
825
+
826
if get_option('cfi')
827
cfi_flags=[]
828
# Check for dependency on LTO
829
@@ -XXX,XX +XXX,XX @@ endif
830
config_host_data.set('CONFIG_GTK', gtk.found())
831
config_host_data.set('CONFIG_LIBATTR', have_old_libattr)
832
config_host_data.set('CONFIG_LIBCAP_NG', libcap_ng.found())
833
+config_host_data.set('CONFIG_EBPF', libbpf.found())
834
config_host_data.set('CONFIG_LIBISCSI', libiscsi.found())
835
config_host_data.set('CONFIG_LIBNFS', libnfs.found())
836
config_host_data.set('CONFIG_RBD', rbd.found())
837
@@ -XXX,XX +XXX,XX @@ if have_system
838
'backends',
839
'backends/tpm',
840
'chardev',
841
+ 'ebpf',
842
'hw/9pfs',
843
'hw/acpi',
844
'hw/adc',
845
@@ -XXX,XX +XXX,XX @@ subdir('accel')
846
subdir('plugins')
847
subdir('bsd-user')
848
subdir('linux-user')
849
+subdir('ebpf')
850
+
851
+common_ss.add(libbpf)
852
853
bsd_user_ss.add(files('gdbstub.c'))
854
specific_ss.add_all(when: 'CONFIG_BSD_USER', if_true: bsd_user_ss)
855
@@ -XXX,XX +XXX,XX @@ summary_info += {'RDMA support': config_host.has_key('CONFIG_RDMA')}
856
summary_info += {'PVRDMA support': config_host.has_key('CONFIG_PVRDMA')}
857
summary_info += {'fdt support': fdt_opt == 'disabled' ? false : fdt_opt}
858
summary_info += {'libcap-ng support': libcap_ng.found()}
859
+summary_info += {'bpf support': libbpf.found()}
860
# TODO: add back protocol and server version
861
summary_info += {'spice support': config_host.has_key('CONFIG_SPICE')}
862
summary_info += {'rbd support': rbd.found()}
863
diff --git a/meson_options.txt b/meson_options.txt
864
index XXXXXXX..XXXXXXX 100644
865
--- a/meson_options.txt
866
+++ b/meson_options.txt
867
@@ -XXX,XX +XXX,XX @@ option('bzip2', type : 'feature', value : 'auto',
868
description: 'bzip2 support for DMG images')
869
option('cap_ng', type : 'feature', value : 'auto',
870
description: 'cap_ng support')
871
+option('bpf', type : 'feature', value : 'auto',
872
+ description: 'eBPF support')
873
option('cocoa', type : 'feature', value : 'auto',
874
description: 'Cocoa user interface (macOS only)')
875
option('curl', type : 'feature', value : 'auto',
876
--
49
--
877
2.7.4
50
2.7.4
878
51
879
52
diff view generated by jsdifflib

Patchew 2.1-devel-b67e4c2

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