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gluon-core: allow zero VXLAN UDP checksum on RX

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Also disabling TX checksums and not only allowing incoming packets without
checksum will provide another small speedup. As doing so would break wired
meshing with VXLAN-enabled nodes that require non-zero checksums, we will
wait a few days before this step.
This commit is contained in:
Matthias Schiffer 2018-01-24 20:56:20 +01:00
parent e54b37d835
commit 7ae8a51126
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GPG Key ID: 16EF3F64CB201D9C
3 changed files with 119 additions and 0 deletions
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1
package/gluon-core/files/lib/netifd/proto/gluon_wired.sh
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@ -45,6 +45,7 @@ proto_gluon_wired_setup() {
json_add_string ip6addr "$(interface_linklocal "$ifname")"
json_add_string peer6addr 'ff02::15c'
json_add_int vid "$(lua -lgluon.util -e 'print(tonumber(gluon.util.domain_seed_bytes("gluon-mesh-vxlan", 3), 16))')"
json_add_boolean rxcsum '0'
json_close_object
ubus call network add_dynamic "$(json_dump)"
fi

75
patches/lede/0062-netifd-system-linux-VXLAN-add-options-to-enable-and-disable-UDP-checksums.patch Normal file
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@ -0,0 +1,75 @@
From: Matthias Schiffer <mschiffer@universe-factory.net>
Date: Wed, 24 Jan 2018 20:53:32 +0100
Subject: netifd: system-linux: VXLAN: add options to enable and disable UDP checksums
diff --git a/package/network/config/netifd/patches/0002-system-linux-VXLAN-add-options-to-enable-and-disable.patch b/package/network/config/netifd/patches/0002-system-linux-VXLAN-add-options-to-enable-and-disable.patch
new file mode 100644
index 0000000000000000000000000000000000000000..67a8bb864be37fa97dfcce4dd841bacafefcd0fc
--- /dev/null
+++ b/package/network/config/netifd/patches/0002-system-linux-VXLAN-add-options-to-enable-and-disable.patch
@@ -0,0 +1,65 @@
+From af3cadb6a46ba93e8a729e71d82b176275931e62 Mon Sep 17 00:00:00 2001
+Message-Id: <af3cadb6a46ba93e8a729e71d82b176275931e62.1516821520.git.mschiffer@universe-factory.net>
+From: Matthias Schiffer <mschiffer@universe-factory.net>
+Date: Wed, 24 Jan 2018 13:21:44 +0100
+Subject: [PATCH] system-linux: VXLAN: add options to enable and disable UDP
+ checksums
+
+Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
+---
+ system-linux.c | 11 +++++++++++
+ system.c | 2 ++
+ system.h | 2 ++
+ 3 files changed, 15 insertions(+)
+
+diff --git a/system-linux.c b/system-linux.c
+index 32d6ffc..0277886 100644
+--- a/system-linux.c
++++ b/system-linux.c
+@@ -2841,6 +2841,17 @@ static int system_add_vxlan(const char *name, const unsigned int link, struct bl
+ }
+ nla_put_u16(msg, IFLA_VXLAN_PORT, htons(port));
+
++ if ((cur = tb_data[VXLAN_DATA_ATTR_RXCSUM])) {
++ bool rxcsum = blobmsg_get_bool(cur);
++ nla_put_u8(msg, IFLA_VXLAN_UDP_ZERO_CSUM6_RX, !rxcsum);
++ }
++
++ if ((cur = tb_data[VXLAN_DATA_ATTR_TXCSUM])) {
++ bool txcsum = blobmsg_get_bool(cur);
++ nla_put_u8(msg, IFLA_VXLAN_UDP_CSUM, txcsum);
++ nla_put_u8(msg, IFLA_VXLAN_UDP_ZERO_CSUM6_TX, !txcsum);
++ }
++
+ if ((cur = tb[TUNNEL_ATTR_TOS])) {
+ char *str = blobmsg_get_string(cur);
+ unsigned tos = 1;
+diff --git a/system.c b/system.c
+index 5555272..e236e96 100644
+--- a/system.c
++++ b/system.c
+@@ -36,6 +36,8 @@ static const struct blobmsg_policy vxlan_data_attrs[__VXLAN_DATA_ATTR_MAX] = {
+ [VXLAN_DATA_ATTR_ID] = { .name = "id", .type = BLOBMSG_TYPE_INT32 },
+ [VXLAN_DATA_ATTR_PORT] = { .name = "port", .type = BLOBMSG_TYPE_INT32 },
+ [VXLAN_DATA_ATTR_MACADDR] = { .name = "macaddr", .type = BLOBMSG_TYPE_STRING },
++ [VXLAN_DATA_ATTR_RXCSUM] = { .name = "rxcsum", .type = BLOBMSG_TYPE_BOOL },
++ [VXLAN_DATA_ATTR_TXCSUM] = { .name = "txcsum", .type = BLOBMSG_TYPE_BOOL },
+ };
+
+ const struct uci_blob_param_list vxlan_data_attr_list = {
+diff --git a/system.h b/system.h
+index 61c72c2..371a524 100644
+--- a/system.h
++++ b/system.h
+@@ -41,6 +41,8 @@ enum vxlan_data {
+ VXLAN_DATA_ATTR_ID,
+ VXLAN_DATA_ATTR_PORT,
+ VXLAN_DATA_ATTR_MACADDR,
++ VXLAN_DATA_ATTR_RXCSUM,
++ VXLAN_DATA_ATTR_TXCSUM,
+ __VXLAN_DATA_ATTR_MAX
+ };
+
+--
+2.16.1
+

43
patches/lede/0063-vxlan-add-options-to-enable-and-disable-UDP-checksums.patch Normal file
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@ -0,0 +1,43 @@
From: Matthias Schiffer <mschiffer@universe-factory.net>
Date: Wed, 24 Jan 2018 13:51:45 +0100
Subject: vxlan: add options to enable and disable UDP checksums
Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
diff --git a/package/network/config/vxlan/Makefile b/package/network/config/vxlan/Makefile
index a471d4e90cbe30c1d1dd01dbf7553995d8c0485e..aeceb9cd884e517b2f274925637b62a538bfa70e 100644
--- a/package/network/config/vxlan/Makefile
+++ b/package/network/config/vxlan/Makefile
@@ -1,7 +1,7 @@
include $(TOPDIR)/rules.mk
PKG_NAME:=vxlan
-PKG_VERSION:=1
+PKG_VERSION:=2
PKG_LICENSE:=GPL-2.0
include $(INCLUDE_DIR)/package.mk
diff --git a/package/network/config/vxlan/files/vxlan.sh b/package/network/config/vxlan/files/vxlan.sh
index 27ccd8f12759f69c7c226cac0c923335b8ccc6a8..d055d41edc59f50c0c132849bbcd0235edeef5b9 100755
--- a/package/network/config/vxlan/files/vxlan.sh
+++ b/package/network/config/vxlan/files/vxlan.sh
@@ -15,8 +15,8 @@ vxlan_generic_setup() {
local link="$cfg"
- local port vid ttl tos mtu macaddr zone
- json_get_vars port vid ttl tos mtu macaddr zone
+ local port vid ttl tos mtu macaddr zone rxcsum txcsum
+ json_get_vars port vid ttl tos mtu macaddr zone rxcsum txcsum
proto_init_update "$link" 1
@@ -36,6 +36,8 @@ vxlan_generic_setup() {
[ -n "$port" ] && json_add_int port "$port"
[ -n "$vid" ] && json_add_int id "$vid"
[ -n "$macaddr" ] && json_add_string macaddr "$macaddr"
+ [ -n "$rxcsum" ] && json_add_boolean rxcsum "$rxcsum"
+ [ -n "$txcsum" ] && json_add_boolean txcsum "$txcsum"
json_close_object
proto_close_tunnel