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Message-ID: <87d24s7x3r.fsf_-_@x220.int.ebiederm.org>
Date: Mon, 02 Mar 2015 00:05:28 -0600
From: ebiederm@...ssion.com (Eric W. Biederman)
To: David Miller <davem@...emloft.net>
Cc: netdev@...r.kernel.org, Ralf Baechle <ralf@...ux-mips.org>,
linux-hams@...r.kernel.org
Subject: [PATCH net-next 07/15] ax25: Refactor to use private neighbour operations.
AX25 already has it's own private arp cache operations to isolate
it's abuse of dev_rebuild_header to transmit packets. Add a function
ax25_neigh_construct that will allow all of the ax25 devices to
force using these operations, so that the generic arp code does
not need to.
Cc: Ralf Baechle <ralf@...ux-mips.org>
Cc: linux-hams@...r.kernel.org
Signed-off-by: "Eric W. Biederman" <ebiederm@...ssion.com>
---
drivers/net/hamradio/6pack.c | 2 ++
drivers/net/hamradio/baycom_epp.c | 2 ++
drivers/net/hamradio/bpqether.c | 2 ++
drivers/net/hamradio/dmascc.c | 2 ++
drivers/net/hamradio/hdlcdrv.c | 2 ++
drivers/net/hamradio/mkiss.c | 2 ++
drivers/net/hamradio/scc.c | 2 ++
drivers/net/hamradio/yam.c | 2 ++
include/net/ax25.h | 5 +++++
net/ax25/ax25_ip.c | 21 +++++++++++++++++++++
10 files changed, 42 insertions(+)
diff --git a/drivers/net/hamradio/6pack.c b/drivers/net/hamradio/6pack.c
index 2533933c79dc..0b8393ca8c80 100644
--- a/drivers/net/hamradio/6pack.c
+++ b/drivers/net/hamradio/6pack.c
@@ -302,6 +302,7 @@ static const struct net_device_ops sp_netdev_ops = {
.ndo_stop = sp_close,
.ndo_start_xmit = sp_xmit,
.ndo_set_mac_address = sp_set_mac_address,
+ .ndo_neigh_construct = ax25_neigh_construct,
};
static void sp_setup(struct net_device *dev)
@@ -315,6 +316,7 @@ static void sp_setup(struct net_device *dev)
dev->addr_len = AX25_ADDR_LEN;
dev->type = ARPHRD_AX25;
+ dev->neigh_priv_len = sizeof(struct ax25_neigh_priv);
dev->tx_queue_len = 10;
/* Only activated in AX.25 mode */
diff --git a/drivers/net/hamradio/baycom_epp.c b/drivers/net/hamradio/baycom_epp.c
index a98c153f371e..3539ab392f7d 100644
--- a/drivers/net/hamradio/baycom_epp.c
+++ b/drivers/net/hamradio/baycom_epp.c
@@ -1109,6 +1109,7 @@ static const struct net_device_ops baycom_netdev_ops = {
.ndo_do_ioctl = baycom_ioctl,
.ndo_start_xmit = baycom_send_packet,
.ndo_set_mac_address = baycom_set_mac_address,
+ .ndo_neigh_construct = ax25_neigh_construct,
};
/*
@@ -1146,6 +1147,7 @@ static void baycom_probe(struct net_device *dev)
dev->header_ops = &ax25_header_ops;
dev->type = ARPHRD_AX25; /* AF_AX25 device */
+ dev->neigh_priv_len = sizeof(struct ax25_neigh_priv);
dev->hard_header_len = AX25_MAX_HEADER_LEN + AX25_BPQ_HEADER_LEN;
dev->mtu = AX25_DEF_PACLEN; /* eth_mtu is the default */
dev->addr_len = AX25_ADDR_LEN; /* sizeof an ax.25 address */
diff --git a/drivers/net/hamradio/bpqether.c b/drivers/net/hamradio/bpqether.c
index c2894e43840e..bce105b16ed0 100644
--- a/drivers/net/hamradio/bpqether.c
+++ b/drivers/net/hamradio/bpqether.c
@@ -469,6 +469,7 @@ static const struct net_device_ops bpq_netdev_ops = {
.ndo_start_xmit = bpq_xmit,
.ndo_set_mac_address = bpq_set_mac_address,
.ndo_do_ioctl = bpq_ioctl,
+ .ndo_neigh_construct = ax25_neigh_construct,
};
static void bpq_setup(struct net_device *dev)
@@ -486,6 +487,7 @@ static void bpq_setup(struct net_device *dev)
#endif
dev->type = ARPHRD_AX25;
+ dev->neigh_priv_len = sizeof(struct ax25_neigh_priv);
dev->hard_header_len = AX25_MAX_HEADER_LEN + AX25_BPQ_HEADER_LEN;
dev->mtu = AX25_DEF_PACLEN;
dev->addr_len = AX25_ADDR_LEN;
diff --git a/drivers/net/hamradio/dmascc.c b/drivers/net/hamradio/dmascc.c
index 0fad408f24aa..abab7be77406 100644
--- a/drivers/net/hamradio/dmascc.c
+++ b/drivers/net/hamradio/dmascc.c
@@ -433,6 +433,7 @@ module_exit(dmascc_exit);
static void __init dev_setup(struct net_device *dev)
{
dev->type = ARPHRD_AX25;
+ dev->neigh_priv_len = sizeof(struct ax25_neigh_priv);
dev->hard_header_len = AX25_MAX_HEADER_LEN;
dev->mtu = 1500;
dev->addr_len = AX25_ADDR_LEN;
@@ -447,6 +448,7 @@ static const struct net_device_ops scc_netdev_ops = {
.ndo_start_xmit = scc_send_packet,
.ndo_do_ioctl = scc_ioctl,
.ndo_set_mac_address = scc_set_mac_address,
+ .ndo_neigh_construct = ax25_neigh_construct,
};
static int __init setup_adapter(int card_base, int type, int n)
diff --git a/drivers/net/hamradio/hdlcdrv.c b/drivers/net/hamradio/hdlcdrv.c
index c67a27245072..435868a7b69c 100644
--- a/drivers/net/hamradio/hdlcdrv.c
+++ b/drivers/net/hamradio/hdlcdrv.c
@@ -626,6 +626,7 @@ static const struct net_device_ops hdlcdrv_netdev = {
.ndo_start_xmit = hdlcdrv_send_packet,
.ndo_do_ioctl = hdlcdrv_ioctl,
.ndo_set_mac_address = hdlcdrv_set_mac_address,
+ .ndo_neigh_construct = ax25_neigh_construct,
};
/*
@@ -676,6 +677,7 @@ static void hdlcdrv_setup(struct net_device *dev)
dev->header_ops = &ax25_header_ops;
dev->type = ARPHRD_AX25; /* AF_AX25 device */
+ dev->neigh_priv_len = sizeof(struct ax25_neigh_priv);
dev->hard_header_len = AX25_MAX_HEADER_LEN + AX25_BPQ_HEADER_LEN;
dev->mtu = AX25_DEF_PACLEN; /* eth_mtu is the default */
dev->addr_len = AX25_ADDR_LEN; /* sizeof an ax.25 address */
diff --git a/drivers/net/hamradio/mkiss.c b/drivers/net/hamradio/mkiss.c
index e37c8d515ce8..c12ec2c2b594 100644
--- a/drivers/net/hamradio/mkiss.c
+++ b/drivers/net/hamradio/mkiss.c
@@ -641,6 +641,7 @@ static const struct net_device_ops ax_netdev_ops = {
.ndo_stop = ax_close,
.ndo_start_xmit = ax_xmit,
.ndo_set_mac_address = ax_set_mac_address,
+ .ndo_neigh_construct = ax25_neigh_construct,
};
static void ax_setup(struct net_device *dev)
@@ -650,6 +651,7 @@ static void ax_setup(struct net_device *dev)
dev->hard_header_len = 0;
dev->addr_len = 0;
dev->type = ARPHRD_AX25;
+ dev->neigh_priv_len = sizeof(struct ax25_neigh_priv);
dev->tx_queue_len = 10;
dev->header_ops = &ax25_header_ops;
dev->netdev_ops = &ax_netdev_ops;
diff --git a/drivers/net/hamradio/scc.c b/drivers/net/hamradio/scc.c
index 57be9e0e98a6..b305f51eb420 100644
--- a/drivers/net/hamradio/scc.c
+++ b/drivers/net/hamradio/scc.c
@@ -1550,6 +1550,7 @@ static const struct net_device_ops scc_netdev_ops = {
.ndo_set_mac_address = scc_net_set_mac_address,
.ndo_get_stats = scc_net_get_stats,
.ndo_do_ioctl = scc_net_ioctl,
+ .ndo_neigh_construct = ax25_neigh_construct,
};
/* ----> Initialize device <----- */
@@ -1567,6 +1568,7 @@ static void scc_net_setup(struct net_device *dev)
dev->flags = 0;
dev->type = ARPHRD_AX25;
+ dev->neigh_priv_len = sizeof(struct ax25_neigh_priv);
dev->hard_header_len = AX25_MAX_HEADER_LEN + AX25_BPQ_HEADER_LEN;
dev->mtu = AX25_DEF_PACLEN;
dev->addr_len = AX25_ADDR_LEN;
diff --git a/drivers/net/hamradio/yam.c b/drivers/net/hamradio/yam.c
index 717433cfb81d..89d9da7a0c51 100644
--- a/drivers/net/hamradio/yam.c
+++ b/drivers/net/hamradio/yam.c
@@ -1100,6 +1100,7 @@ static const struct net_device_ops yam_netdev_ops = {
.ndo_start_xmit = yam_send_packet,
.ndo_do_ioctl = yam_ioctl,
.ndo_set_mac_address = yam_set_mac_address,
+ .ndo_neigh_construct = ax25_neigh_construct,
};
static void yam_setup(struct net_device *dev)
@@ -1128,6 +1129,7 @@ static void yam_setup(struct net_device *dev)
dev->header_ops = &ax25_header_ops;
dev->type = ARPHRD_AX25;
+ dev->neigh_priv_len = sizeof(struct ax25_neigh_priv);
dev->hard_header_len = AX25_MAX_HEADER_LEN;
dev->mtu = AX25_MTU;
dev->addr_len = AX25_ADDR_LEN;
diff --git a/include/net/ax25.h b/include/net/ax25.h
index 7385a64b61b8..45feeba7a325 100644
--- a/include/net/ax25.h
+++ b/include/net/ax25.h
@@ -12,6 +12,7 @@
#include <linux/list.h>
#include <linux/slab.h>
#include <linux/atomic.h>
+#include <net/neighbour.h>
#define AX25_T1CLAMPLO 1
#define AX25_T1CLAMPHI (30 * HZ)
@@ -366,7 +367,11 @@ int ax25_kiss_rcv(struct sk_buff *, struct net_device *, struct packet_type *,
struct net_device *);
/* ax25_ip.c */
+int ax25_neigh_construct(struct neighbour *neigh);
extern const struct header_ops ax25_header_ops;
+struct ax25_neigh_priv {
+ struct neigh_ops ops;
+};
/* ax25_out.c */
ax25_cb *ax25_send_frame(struct sk_buff *, int, ax25_address *, ax25_address *,
diff --git a/net/ax25/ax25_ip.c b/net/ax25/ax25_ip.c
index d93103ba8cec..bff12e0c9090 100644
--- a/net/ax25/ax25_ip.c
+++ b/net/ax25/ax25_ip.c
@@ -216,6 +216,22 @@ put:
return 1;
}
+int ax25_neigh_construct(struct neighbour *neigh)
+{
+ /* This trouble could be saved if ax25 would right a proper
+ * dev_queue_xmit function.
+ */
+ struct ax25_neigh_priv *priv = neighbour_priv(neigh);
+
+ if (neigh->tbl->family != AF_INET)
+ return -EINVAL;
+
+ priv->ops = *neigh->ops;
+ priv->ops.output = neigh_compat_output;
+ priv->ops.connected_output = neigh_compat_output;
+ return 0;
+}
+
#else /* INET */
static int ax25_hard_header(struct sk_buff *skb, struct net_device *dev,
@@ -230,6 +246,10 @@ static int ax25_rebuild_header(struct sk_buff *skb)
return 1;
}
+int ax25_neigh_construct(struct neighbour *neigh)
+{
+ return 0;
+}
#endif
const struct header_ops ax25_header_ops = {
@@ -238,4 +258,5 @@ const struct header_ops ax25_header_ops = {
};
EXPORT_SYMBOL(ax25_header_ops);
+EXPORT_SYMBOL(ax25_neigh_construct);
--
2.2.1
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