/* * NET3: Fibre Channel device handling subroutines * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. * * Vineet Abraham * v 1.0 03/22/99 */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* * Put the headers on a Fibre Channel packet. */ static int fc_header(struct sk_buff *skb, struct net_device *dev, unsigned short type, const void *daddr, const void *saddr, unsigned int len) { struct fch_hdr *fch; int hdr_len; /* * Add the 802.2 SNAP header if IP as the IPv4 code calls * dev->hard_header directly. */ if (type == ETH_P_IP || type == ETH_P_ARP) { struct fcllc *fcllc; hdr_len = sizeof(struct fch_hdr) + sizeof(struct fcllc); fch = (struct fch_hdr *)skb_push(skb, hdr_len); fcllc = (struct fcllc *)(fch+1); fcllc->dsap = fcllc->ssap = EXTENDED_SAP; fcllc->llc = UI_CMD; fcllc->protid[0] = fcllc->protid[1] = fcllc->protid[2] = 0x00; fcllc->ethertype = htons(type); } else { hdr_len = sizeof(struct fch_hdr); fch = (struct fch_hdr *)skb_push(skb, hdr_len); } if(saddr) memcpy(fch->saddr,saddr,dev->addr_len); else memcpy(fch->saddr,dev->dev_addr,dev->addr_len); if(daddr) { memcpy(fch->daddr,daddr,dev->addr_len); return hdr_len; } return -hdr_len; } static const struct header_ops fc_header_ops = { .create = fc_header, }; static void fc_setup(struct net_device *dev) { dev->header_ops = &fc_header_ops; dev->type = ARPHRD_IEEE802; dev->hard_header_len = FC_HLEN; dev->mtu = 2024; dev->addr_len = FC_ALEN; dev->tx_queue_len = 100; /* Long queues on fc */ dev->flags = IFF_BROADCAST; memset(dev->broadcast, 0xFF, FC_ALEN); } /** * alloc_fcdev - Register fibre channel device * @sizeof_priv: Size of additional driver-private structure to be allocated * for this fibre channel device * * Fill in the fields of the device structure with fibre channel-generic values. * * Constructs a new net device, complete with a private data area of * size @sizeof_priv. A 32-byte (not bit) alignment is enforced for * this private data area. */ struct net_device *alloc_fcdev(int sizeof_priv) { return alloc_netdev(sizeof_priv, "fc%d", NET_NAME_UNKNOWN, fc_setup); } EXPORT_SYMBOL(alloc_fcdev); alue='2'>2space:mode:
authorFlorian Fainelli <f.fainelli@gmail.com>2017-02-04 13:02:43 -0800
committerDavid S. Miller <davem@davemloft.net>2017-02-07 10:51:45 -0500
commit71e0bbde0d88047f66b25721f69a441d46083748 (patch)
treee9ecf5d8c0662c3958ca74fa815a142e9cfdf739
parent14b89f36eed2993670906a3991bca496a5ebf1a6 (diff)
net: dsa: Add support for platform data
Allow drivers to use the new DSA API with platform data. Most of the code in net/dsa/dsa2.c does not rely so much on device_nodes and can get the same information from platform_data instead. We purposely do not support distributed configurations with platform data, so drivers should be providing a pointer to a 'struct dsa_chip_data' structure if they wish to communicate per-port layout. Multiple CPUs port could potentially be supported and dsa_chip_data is extended to receive up to one reference to an upstream network device per port described by a dsa_chip_data structure. dsa_dev_to_net_device() increments the network device's reference count, so we intentionally call dev_put() to be consistent with the DT-enabled path, until we have a generic notifier based solution. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat
-rw-r--r--include/net/dsa.h6
-rw-r--r--net/dsa/dsa2.c102
2 files changed, 90 insertions, 18 deletions
diff --git a/include/net/dsa.h b/include/net/dsa.h