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Date: Tue, 11 Aug 2015 22:17:40 -0700
From: Pravin B Shelar <pshelar@...ira.com>
To: netdev@...r.kernel.org
Cc: Pravin B Shelar <pshelar@...ira.com>
Subject: [PATCH net-next 2/6] geneve: Make dst-port configurable.
Add netlink interface to configure Geneve UDP port number.
So that user can configure it for a Gevene device.
Signed-off-by: Pravin B Shelar <pshelar@...ira.com>
---
drivers/net/geneve.c | 14 ++++++++++++--
include/uapi/linux/if_link.h | 1 +
2 files changed, 13 insertions(+), 2 deletions(-)
diff --git a/drivers/net/geneve.c b/drivers/net/geneve.c
index 78d49d1..5e9bab8 100644
--- a/drivers/net/geneve.c
+++ b/drivers/net/geneve.c
@@ -49,6 +49,7 @@ struct geneve_dev {
u8 tos; /* TOS override */
struct sockaddr_in remote; /* IPv4 address for link partner */
struct list_head next; /* geneve's per namespace list */
+ __be16 dst_port;
};
static int geneve_net_id;
@@ -157,7 +158,7 @@ static int geneve_open(struct net_device *dev)
struct geneve_net *gn = net_generic(geneve->net, geneve_net_id);
struct geneve_sock *gs;
- gs = geneve_sock_add(net, htons(GENEVE_UDP_PORT), geneve_rx, gn,
+ gs = geneve_sock_add(net, geneve->dst_port, geneve_rx, gn,
false, false);
if (IS_ERR(gs))
return PTR_ERR(gs);
@@ -225,7 +226,7 @@ static netdev_tx_t geneve_xmit(struct sk_buff *skb, struct net_device *dev)
/* no need to handle local destination and encap bypass...yet... */
err = geneve_xmit_skb(gs, rt, skb, fl4.saddr, fl4.daddr,
- tos, ttl, 0, sport, htons(GENEVE_UDP_PORT), 0,
+ tos, ttl, 0, sport, geneve->dst_port, 0,
geneve->vni, 0, NULL, false,
!net_eq(geneve->net, dev_net(geneve->dev)));
if (err < 0)
@@ -378,6 +379,11 @@ static int geneve_newlink(struct net *net, struct net_device *dev,
if (data[IFLA_GENEVE_TOS])
geneve->tos = nla_get_u8(data[IFLA_GENEVE_TOS]);
+ if (data[IFLA_GENEVE_PORT])
+ geneve->dst_port = htons(nla_get_u16(data[IFLA_GENEVE_PORT]));
+ else
+ geneve->dst_port = htons(GENEVE_UDP_PORT);
+
list_add(&geneve->next, &gn->geneve_list);
hlist_add_head_rcu(&geneve->hlist, &gn->vni_list[hash]);
@@ -402,6 +408,7 @@ static size_t geneve_get_size(const struct net_device *dev)
nla_total_size(sizeof(struct in_addr)) + /* IFLA_GENEVE_REMOTE */
nla_total_size(sizeof(__u8)) + /* IFLA_GENEVE_TTL */
nla_total_size(sizeof(__u8)) + /* IFLA_GENEVE_TOS */
+ nla_total_size(sizeof(__u16)) + /* IFLA_GENEVE_PORT */
0;
}
@@ -422,6 +429,9 @@ static int geneve_fill_info(struct sk_buff *skb, const struct net_device *dev)
nla_put_u8(skb, IFLA_GENEVE_TOS, geneve->tos))
goto nla_put_failure;
+ if (nla_put_u32(skb, IFLA_GENEVE_PORT, ntohs(geneve->dst_port)))
+ goto nla_put_failure;
+
return 0;
nla_put_failure:
diff --git a/include/uapi/linux/if_link.h b/include/uapi/linux/if_link.h
index d450be3..26d4412 100644
--- a/include/uapi/linux/if_link.h
+++ b/include/uapi/linux/if_link.h
@@ -400,6 +400,7 @@ enum {
IFLA_GENEVE_REMOTE,
IFLA_GENEVE_TTL,
IFLA_GENEVE_TOS,
+ IFLA_GENEVE_PORT, /* destination port */
__IFLA_GENEVE_MAX
};
#define IFLA_GENEVE_MAX (__IFLA_GENEVE_MAX - 1)
--
1.8.3.1
--
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