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authorEric W. Biederman <ebiederm@xmission.com>2015-03-03 18:41:47 +0300
committerDavid S. Miller <davem@davemloft.net>2015-03-03 22:44:41 +0300
commit1d5da757da860a6916adbf68b09e868062b4b3b8 (patch)
treedeee80ad76638718a7babc524235ff13f35b2f98 /drivers/net/hamradio/scc.c
parentbcc90e3fb132f009e647c9032eab4fedb6399339 (diff)
downloadlinux-1d5da757da860a6916adbf68b09e868062b4b3b8.tar.xz
ax25: Stop using magic neighbour cache operations.
Before the ax25 stack calls dev_queue_xmit it always calls ax25_type_trans which sets skb->protocol to ETH_P_AX25. Which means that by looking at the protocol type it is possible to detect IP packets that have not been munged by the ax25 stack in ndo_start_xmit and call a function to munge them. Rename ax25_neigh_xmit to ax25_ip_xmit and tweak the return type and value to be appropriate for an ndo_start_xmit function. Update all of the ax25 devices to test the protocol type for ETH_P_IP and return ax25_ip_xmit as the first thing they do. This preserves the existing semantics of IP packet processing, but the timing will be a little different as the IP packets now pass through the qdisc layer before reaching the ax25 ip packet processing. Remove the now unnecessary ax25 neighbour table operations. Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/hamradio/scc.c')
-rw-r--r--drivers/net/hamradio/scc.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/net/hamradio/scc.c b/drivers/net/hamradio/scc.c
index b305f51eb420..ce88df33fe17 100644
--- a/drivers/net/hamradio/scc.c
+++ b/drivers/net/hamradio/scc.c
@@ -1550,7 +1550,6 @@ 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 <----- */
@@ -1568,7 +1567,6 @@ 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;
@@ -1641,6 +1639,9 @@ static netdev_tx_t scc_net_tx(struct sk_buff *skb, struct net_device *dev)
unsigned long flags;
char kisscmd;
+ if (skb->protocol == htons(ETH_P_IP))
+ return ax25_ip_xmit(skb);
+
if (skb->len > scc->stat.bufsize || skb->len < 2) {
scc->dev_stat.tx_dropped++; /* bogus frame */
dev_kfree_skb(skb);