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author | Florian Fainelli <f.fainelli@gmail.com> | 2014-08-27 17:04:46 -0700 |
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committer | David S. Miller <davem@davemloft.net> | 2014-08-27 22:59:39 -0700 |
commit | 3e8a72d1dae374cf6fc1dba97cec663585845ff9 (patch) | |
tree | 83a2ebc590d0dc90d27515dc15bf6323cb2a6c1b /net/dsa/tag_edsa.c | |
parent | 8663dc2002b02abfe5dfb0fb7e544b81982ad95b (diff) | |
download | op-kernel-dev-3e8a72d1dae374cf6fc1dba97cec663585845ff9.zip op-kernel-dev-3e8a72d1dae374cf6fc1dba97cec663585845ff9.tar.gz |
net: dsa: reduce number of protocol hooks
DSA is currently registering one packet_type function per EtherType it
needs to intercept in the receive path of a DSA-enabled Ethernet device.
Right now we have three of them: trailer, DSA and eDSA, and there might
be more in the future, this will not scale to the addition of new
protocols.
This patch proceeds with adding a new layer of abstraction and two new
functions:
dsa_switch_rcv() which will dispatch into the tag-protocol specific
receive function implemented by net/dsa/tag_*.c
dsa_slave_xmit() which will dispatch into the tag-protocol specific
transmit function implemented by net/dsa/tag_*.c
When we do create the per-port slave network devices, we iterate over
the switch protocol to assign the DSA-specific receive and transmit
operations.
A new fake ethertype value is used: ETH_P_XDSA to illustrate the fact
that this is no longer going to look like ETH_P_DSA or ETH_P_TRAILER
like it used to be.
This allows us to greatly simplify the check in eth_type_trans() and
always override the skb->protocol with ETH_P_XDSA for Ethernet switches
tagged protocol, while also reducing the number repetitive slave
netdevice_ops assignments.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/dsa/tag_edsa.c')
-rw-r--r-- | net/dsa/tag_edsa.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/net/dsa/tag_edsa.c b/net/dsa/tag_edsa.c index e70c43c..6b30abe 100644 --- a/net/dsa/tag_edsa.c +++ b/net/dsa/tag_edsa.c @@ -17,7 +17,7 @@ #define DSA_HLEN 4 #define EDSA_HLEN 8 -netdev_tx_t edsa_xmit(struct sk_buff *skb, struct net_device *dev) +static netdev_tx_t edsa_xmit(struct sk_buff *skb, struct net_device *dev) { struct dsa_slave_priv *p = netdev_priv(dev); u8 *edsa_header; @@ -205,7 +205,7 @@ out: return 0; } -struct packet_type edsa_packet_type __read_mostly = { - .type = cpu_to_be16(ETH_P_EDSA), - .func = edsa_rcv, +const struct dsa_device_ops edsa_netdev_ops = { + .xmit = edsa_xmit, + .rcv = edsa_rcv, }; |