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Message-Id: <1415376334-29292-1-git-send-email-therbert@google.com>
Date: Fri, 7 Nov 2014 08:05:34 -0800
From: Tom Herbert <therbert@...gle.com>
To: stephen@...workplumber.org, davem@...emloft.net,
netdev@...r.kernel.org
Subject: [PATCH iproute2] vxlan: Add support for enabling UDP checksums
Add udpcsum option to enable transmitting UDP checksums when doing
VXLAN/IPv4. Add udp6zerocsumtx, and udp6zerocsumrx options to enable
sending zero checksums and receiving zero checksums in VXLAN/IPv6.
Signed-off-by: Tom Herbert <therbert@...gle.com>
---
ip/iplink_vxlan.c | 30 ++++++++++++++++++++++++++++++
1 file changed, 30 insertions(+)
diff --git a/ip/iplink_vxlan.c b/ip/iplink_vxlan.c
index f410423..9cc3ec3 100644
--- a/ip/iplink_vxlan.c
+++ b/ip/iplink_vxlan.c
@@ -29,6 +29,7 @@ static void print_explain(FILE *f)
fprintf(f, " [ [no]learning ] [ [no]proxy ] [ [no]rsc ]\n");
fprintf(f, " [ [no]l2miss ] [ [no]l3miss ]\n");
fprintf(f, " [ ageing SECONDS ] [ maxaddress NUMBER ]\n");
+ fprintf(f, " [ [no]udpcsum ] [ [no]udp6zerocsumtx ] [ [no]udp6zerocsumrx ]\n");
fprintf(f, "\n");
fprintf(f, "Where: VNI := 0-16777215\n");
fprintf(f, " ADDR := { IP_ADDRESS | any }\n");
@@ -64,6 +65,9 @@ static int vxlan_parse_opt(struct link_util *lu, int argc, char **argv,
__u32 age = 0;
__u32 maxaddr = 0;
__u16 dstport = 0;
+ __u8 udpcsum = 0;
+ __u8 udp6zerocsumtx = 0;
+ __u8 udp6zerocsumrx = 0;
int dst_port_set = 0;
struct ifla_vxlan_port_range range = { 0, 0 };
@@ -181,6 +185,18 @@ static int vxlan_parse_opt(struct link_util *lu, int argc, char **argv,
l3miss = 0;
} else if (!matches(*argv, "l3miss")) {
l3miss = 1;
+ } else if (!matches(*argv, "udpcsum")) {
+ udpcsum = 1;
+ } else if (!matches(*argv, "noudpcsum")) {
+ udpcsum = 0;
+ } else if (!matches(*argv, "udp6zerocsumtx")) {
+ udp6zerocsumtx = 1;
+ } else if (!matches(*argv, "noudp6zerocsumtx")) {
+ udp6zerocsumtx = 0;
+ } else if (!matches(*argv, "udp6zerocsumrx")) {
+ udp6zerocsumrx = 1;
+ } else if (!matches(*argv, "noudp6zerocsumrx")) {
+ udp6zerocsumrx = 0;
} else if (matches(*argv, "help") == 0) {
explain();
return -1;
@@ -236,6 +252,9 @@ static int vxlan_parse_opt(struct link_util *lu, int argc, char **argv,
addattr8(n, 1024, IFLA_VXLAN_RSC, rsc);
addattr8(n, 1024, IFLA_VXLAN_L2MISS, l2miss);
addattr8(n, 1024, IFLA_VXLAN_L3MISS, l3miss);
+ addattr8(n, 1024, IFLA_VXLAN_UDP_CSUM, udpcsum);
+ addattr8(n, 1024, IFLA_VXLAN_UDP_ZERO_CSUM6_TX, udp6zerocsumtx);
+ addattr8(n, 1024, IFLA_VXLAN_UDP_ZERO_CSUM6_RX, udp6zerocsumrx);
if (noage)
addattr32(n, 1024, IFLA_VXLAN_AGEING, 0);
@@ -368,6 +387,17 @@ static void vxlan_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[])
if (tb[IFLA_VXLAN_LIMIT] &&
((maxaddr = rta_getattr_u32(tb[IFLA_VXLAN_LIMIT])) != 0))
fprintf(f, "maxaddr %u ", maxaddr);
+
+ if (tb[IFLA_VXLAN_UDP_CSUM] && rta_getattr_u8(tb[IFLA_VXLAN_UDP_CSUM]))
+ fputs("udpcsum ", f);
+
+ if (tb[IFLA_VXLAN_UDP_ZERO_CSUM6_TX] &&
+ rta_getattr_u8(tb[IFLA_VXLAN_UDP_ZERO_CSUM6_TX]))
+ fputs("udp6zerocsumtx ", f);
+
+ if (tb[IFLA_VXLAN_UDP_ZERO_CSUM6_RX] &&
+ rta_getattr_u8(tb[IFLA_VXLAN_UDP_ZERO_CSUM6_RX]))
+ fputs("udp6zerocsumrx ", f);
}
static void vxlan_print_help(struct link_util *lu, int argc, char **argv,
--
2.1.0.rc2.206.gedb03e5
--
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