[SCSI] fcoe, libfcoe: Add support for FIP. FCoE discovery and keep-alive.
FIP is the new standard way to discover Fibre-Channel Forwarders (FCFs) by sending solicitations and listening for advertisements from FCFs. It also provides for keep-alives and period advertisements so that both parties know they have connectivity. If the FCF loses connectivity to the storage fabric, it can send a Link Reset to inform the E_node. This version is also compatible with pre-FIP implementations, so no configured selection between FIP mode and non-FIP mode is required. We wait a couple seconds after sending the initial solicitation and then send an old-style FLOGI. If we receive any FIP frames, we use FIP only mode. If the old FLOGI receives a response, we disable FIP mode. After every reset or link up, this determination is repeated. Signed-off-by: Joe Eykholt <jeykholt@cisco.com> Signed-off-by: Vasu Dev <vasu.dev@intel.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
This commit is contained in:
Joe Eykholt
James Bottomley
parent
af5f428763
commit
97c8389d54
4 changed files with 1499 additions and 137 deletions
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@ -37,6 +37,7 @@
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#include <net/rtnetlink.h>
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#include <scsi/fc/fc_encaps.h>
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#include <scsi/fc/fc_fip.h>
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#include <scsi/libfc.h>
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#include <scsi/fc_frame.h>
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@ -71,7 +72,6 @@ static int fcoe_hostlist_add(const struct fc_lport *);
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static int fcoe_hostlist_remove(const struct fc_lport *);
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static int fcoe_check_wait_queue(struct fc_lport *);
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static void fcoe_recv_flogi(struct fcoe_softc *, struct fc_frame *, u8 *);
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static int fcoe_device_notification(struct notifier_block *, ulong, void *);
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static void fcoe_dev_setup(void);
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static void fcoe_dev_cleanup(void);
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@ -185,7 +185,7 @@ static int fcoe_netdev_config(struct fc_lport *lp, struct net_device *netdev)
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/* Setup lport private data to point to fcoe softc */
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fc = lport_priv(lp);
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fc->lp = lp;
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fc->ctlr.lp = lp;
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fc->real_dev = netdev;
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fc->phys_dev = netdev;
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@ -210,9 +210,6 @@ static int fcoe_netdev_config(struct fc_lport *lp, struct net_device *netdev)
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if (fc_set_mfs(lp, mfs))
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return -EINVAL;
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if (!fcoe_link_ok(lp))
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lp->link_up = 1;
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/* offload features support */
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if (fc->real_dev->features & NETIF_F_SG)
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lp->sg_supp = 1;
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@ -242,7 +239,7 @@ static int fcoe_netdev_config(struct fc_lport *lp, struct net_device *netdev)
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fc->fcoe_pending_queue_active = 0;
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/* setup Source Mac Address */
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memcpy(fc->ctl_src_addr, fc->real_dev->dev_addr,
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memcpy(fc->ctlr.ctl_src_addr, fc->real_dev->dev_addr,
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fc->real_dev->addr_len);
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wwnn = fcoe_wwn_from_mac(fc->real_dev->dev_addr, 1, 0);
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@ -358,6 +355,8 @@ static int fcoe_if_destroy(struct net_device *netdev)
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/* Don't listen for Ethernet packets anymore */
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dev_remove_pack(&fc->fcoe_packet_type);
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dev_remove_pack(&fc->fip_packet_type);
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fcoe_ctlr_destroy(&fc->ctlr);
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/* Cleanup the fc_lport */
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fc_lport_destroy(lp);
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@ -375,8 +374,10 @@ static int fcoe_if_destroy(struct net_device *netdev)
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rtnl_lock();
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memcpy(flogi_maddr, (u8[6]) FC_FCOE_FLOGI_MAC, ETH_ALEN);
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dev_unicast_delete(fc->real_dev, flogi_maddr, ETH_ALEN);
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if (compare_ether_addr(fc->data_src_addr, (u8[6]) { 0 }))
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dev_unicast_delete(fc->real_dev, fc->data_src_addr, ETH_ALEN);
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if (!is_zero_ether_addr(fc->ctlr.data_src_addr))
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dev_unicast_delete(fc->real_dev,
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fc->ctlr.data_src_addr, ETH_ALEN);
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dev_mc_delete(fc->real_dev, FIP_ALL_ENODE_MACS, ETH_ALEN, 0);
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rtnl_unlock();
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/* Free the per-CPU revieve threads */
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@ -437,6 +438,58 @@ static struct libfc_function_template fcoe_libfc_fcn_templ = {
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.ddp_done = fcoe_ddp_done,
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};
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/**
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* fcoe_fip_recv - handle a received FIP frame.
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* @skb: the receive skb
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* @dev: associated &net_device
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* @ptype: the &packet_type structure which was used to register this handler.
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* @orig_dev: original receive &net_device, in case @dev is a bond.
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*
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* Returns: 0 for success
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*/
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static int fcoe_fip_recv(struct sk_buff *skb, struct net_device *dev,
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struct packet_type *ptype,
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struct net_device *orig_dev)
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{
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struct fcoe_softc *fc;
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fc = container_of(ptype, struct fcoe_softc, fip_packet_type);
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fcoe_ctlr_recv(&fc->ctlr, skb);
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return 0;
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}
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/**
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* fcoe_fip_send() - send an Ethernet-encapsulated FIP frame.
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* @fip: FCoE controller.
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* @skb: FIP Packet.
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*/
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static void fcoe_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb)
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{
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skb->dev = fcoe_from_ctlr(fip)->real_dev;
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dev_queue_xmit(skb);
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}
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/**
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* fcoe_update_src_mac() - Update Ethernet MAC filters.
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* @fip: FCoE controller.
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* @old: Unicast MAC address to delete if the MAC is non-zero.
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* @new: Unicast MAC address to add.
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*
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* Remove any previously-set unicast MAC filter.
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* Add secondary FCoE MAC address filter for our OUI.
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*/
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static void fcoe_update_src_mac(struct fcoe_ctlr *fip, u8 *old, u8 *new)
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{
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struct fcoe_softc *fc;
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fc = fcoe_from_ctlr(fip);
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rtnl_lock();
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if (!is_zero_ether_addr(old))
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dev_unicast_delete(fc->real_dev, old, ETH_ALEN);
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dev_unicast_add(fc->real_dev, new, ETH_ALEN);
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rtnl_unlock();
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}
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/**
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* fcoe_if_create() - this function creates the fcoe interface
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* @netdev: pointer the associated netdevice
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@ -485,6 +538,18 @@ static int fcoe_if_create(struct net_device *netdev)
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goto out_host_put;
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}
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/*
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* Initialize FIP.
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*/
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fcoe_ctlr_init(&fc->ctlr);
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fc->ctlr.send = fcoe_fip_send;
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fc->ctlr.update_mac = fcoe_update_src_mac;
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fc->fip_packet_type.func = fcoe_fip_recv;
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fc->fip_packet_type.type = htons(ETH_P_FIP);
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fc->fip_packet_type.dev = fc->real_dev;
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dev_add_pack(&fc->fip_packet_type);
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/* configure lport scsi host properties */
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rc = fcoe_shost_config(lp, shost, &netdev->dev);
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if (rc) {
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@ -513,6 +578,9 @@ static int fcoe_if_create(struct net_device *netdev)
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fc_fabric_login(lp);
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if (!fcoe_link_ok(lp))
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fcoe_ctlr_link_up(&fc->ctlr);
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dev_hold(netdev);
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return rc;
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@ -727,11 +795,13 @@ int fcoe_rcv(struct sk_buff *skb, struct net_device *dev,
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unsigned int cpu = 0;
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fc = container_of(ptype, struct fcoe_softc, fcoe_packet_type);
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lp = fc->lp;
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lp = fc->ctlr.lp;
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if (unlikely(lp == NULL)) {
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FC_DBG("cannot find hba structure");
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goto err2;
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}
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if (!lp->link_up)
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goto err2;
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if (unlikely(debug_fcoe)) {
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FC_DBG("skb_info: len:%d data_len:%d head:%p data:%p tail:%p "
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@ -929,7 +999,6 @@ int fcoe_xmit(struct fc_lport *lp, struct fc_frame *fp)
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unsigned int hlen; /* header length implies the version */
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unsigned int tlen; /* trailer length */
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unsigned int elen; /* eth header, may include vlan */
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int flogi_in_progress = 0;
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struct fcoe_softc *fc;
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u8 sof, eof;
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struct fcoe_hdr *hp;
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@ -937,31 +1006,19 @@ int fcoe_xmit(struct fc_lport *lp, struct fc_frame *fp)
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WARN_ON((fr_len(fp) % sizeof(u32)) != 0);
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fc = lport_priv(lp);
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/*
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* if it is a flogi then we need to learn gw-addr
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* and my own fcid
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*/
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fh = fc_frame_header_get(fp);
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if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
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if (fc_frame_payload_op(fp) == ELS_FLOGI) {
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fc->flogi_oxid = ntohs(fh->fh_ox_id);
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fc->address_mode = FCOE_FCOUI_ADDR_MODE;
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fc->flogi_progress = 1;
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flogi_in_progress = 1;
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} else if (fc->flogi_progress && ntoh24(fh->fh_s_id) != 0) {
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/*
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* Here we must've gotten an SID by accepting an FLOGI
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* from a point-to-point connection. Switch to using
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* the source mac based on the SID. The destination
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* MAC in this case would have been set by receving the
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* FLOGI.
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*/
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fc_fcoe_set_mac(fc->data_src_addr, fh->fh_s_id);
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fc->flogi_progress = 0;
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}
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skb = fp_skb(fp);
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wlen = skb->len / FCOE_WORD_TO_BYTE;
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if (!lp->link_up) {
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kfree(skb);
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return 0;
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}
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skb = fp_skb(fp);
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if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ) &&
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fcoe_ctlr_els_send(&fc->ctlr, skb))
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return 0;
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sof = fr_sof(fp);
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eof = fr_eof(fp);
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@ -1016,16 +1073,16 @@ int fcoe_xmit(struct fc_lport *lp, struct fc_frame *fp)
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/* fill up mac and fcoe headers */
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eh = eth_hdr(skb);
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eh->h_proto = htons(ETH_P_FCOE);
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if (fc->address_mode == FCOE_FCOUI_ADDR_MODE)
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if (fc->ctlr.map_dest)
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fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id);
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else
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/* insert GW address */
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memcpy(eh->h_dest, fc->dest_addr, ETH_ALEN);
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memcpy(eh->h_dest, fc->ctlr.dest_addr, ETH_ALEN);
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if (unlikely(flogi_in_progress))
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memcpy(eh->h_source, fc->ctl_src_addr, ETH_ALEN);
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if (unlikely(fc->ctlr.flogi_oxid != FC_XID_UNKNOWN))
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memcpy(eh->h_source, fc->ctlr.ctl_src_addr, ETH_ALEN);
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else
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memcpy(eh->h_source, fc->data_src_addr, ETH_ALEN);
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memcpy(eh->h_source, fc->ctlr.data_src_addr, ETH_ALEN);
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hp = (struct fcoe_hdr *)(eh + 1);
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memset(hp, 0, sizeof(*hp));
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@ -1125,11 +1182,9 @@ int fcoe_percpu_receive_thread(void *arg)
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* Save source MAC address before discarding header.
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*/
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fc = lport_priv(lp);
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if (unlikely(fc->flogi_progress))
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mac = eth_hdr(skb)->h_source;
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if (skb_is_nonlinear(skb))
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skb_linearize(skb); /* not ideal */
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mac = eth_hdr(skb)->h_source;
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/*
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* Frame length checks and setting up the header pointers
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@ -1204,71 +1259,16 @@ int fcoe_percpu_receive_thread(void *arg)
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}
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fr_flags(fp) &= ~FCPHF_CRC_UNCHECKED;
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}
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/* non flogi and non data exchanges are handled here */
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if (unlikely(fc->flogi_progress))
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fcoe_recv_flogi(fc, fp, mac);
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if (unlikely(fc->ctlr.flogi_oxid != FC_XID_UNKNOWN) &&
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fcoe_ctlr_recv_flogi(&fc->ctlr, fp, mac)) {
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fc_frame_free(fp);
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continue;
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}
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fc_exch_recv(lp, lp->emp, fp);
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}
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return 0;
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}
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/**
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* fcoe_recv_flogi() - flogi receive function
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* @fc: associated fcoe_softc
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* @fp: the recieved frame
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* @sa: the source address of this flogi
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*
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* This is responsible to parse the flogi response and sets the corresponding
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* mac address for the initiator, eitehr OUI based or GW based.
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*
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* Returns: none
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*/
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static void fcoe_recv_flogi(struct fcoe_softc *fc, struct fc_frame *fp, u8 *sa)
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{
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struct fc_frame_header *fh;
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u8 op;
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fh = fc_frame_header_get(fp);
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if (fh->fh_type != FC_TYPE_ELS)
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return;
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op = fc_frame_payload_op(fp);
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if (op == ELS_LS_ACC && fh->fh_r_ctl == FC_RCTL_ELS_REP &&
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fc->flogi_oxid == ntohs(fh->fh_ox_id)) {
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/*
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* FLOGI accepted.
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* If the src mac addr is FC_OUI-based, then we mark the
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* address_mode flag to use FC_OUI-based Ethernet DA.
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* Otherwise we use the FCoE gateway addr
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*/
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if (!compare_ether_addr(sa, (u8[6]) FC_FCOE_FLOGI_MAC)) {
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fc->address_mode = FCOE_FCOUI_ADDR_MODE;
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} else {
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memcpy(fc->dest_addr, sa, ETH_ALEN);
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fc->address_mode = FCOE_GW_ADDR_MODE;
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}
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/*
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* Remove any previously-set unicast MAC filter.
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* Add secondary FCoE MAC address filter for our OUI.
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*/
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rtnl_lock();
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if (compare_ether_addr(fc->data_src_addr, (u8[6]) { 0 }))
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dev_unicast_delete(fc->real_dev, fc->data_src_addr,
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ETH_ALEN);
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fc_fcoe_set_mac(fc->data_src_addr, fh->fh_d_id);
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dev_unicast_add(fc->real_dev, fc->data_src_addr, ETH_ALEN);
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rtnl_unlock();
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fc->flogi_progress = 0;
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} else if (op == ELS_FLOGI && fh->fh_r_ctl == FC_RCTL_ELS_REQ && sa) {
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/*
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* Save source MAC for point-to-point responses.
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*/
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memcpy(fc->dest_addr, sa, ETH_ALEN);
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fc->address_mode = FCOE_GW_ADDR_MODE;
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}
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}
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/**
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* fcoe_watchdog() - fcoe timer callback
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* @vp:
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@ -1285,8 +1285,8 @@ void fcoe_watchdog(ulong vp)
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read_lock(&fcoe_hostlist_lock);
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list_for_each_entry(fc, &fcoe_hostlist, list) {
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if (fc->lp)
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fcoe_check_wait_queue(fc->lp);
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if (fc->ctlr.lp)
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fcoe_check_wait_queue(fc->ctlr.lp);
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}
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read_unlock(&fcoe_hostlist_lock);
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@ -1387,14 +1387,14 @@ static int fcoe_device_notification(struct notifier_block *notifier,
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struct net_device *real_dev = ptr;
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struct fcoe_softc *fc;
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struct fcoe_dev_stats *stats;
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u32 new_link_up;
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u32 link_possible = 1;
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u32 mfs;
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int rc = NOTIFY_OK;
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read_lock(&fcoe_hostlist_lock);
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list_for_each_entry(fc, &fcoe_hostlist, list) {
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if (fc->real_dev == real_dev) {
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lp = fc->lp;
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lp = fc->ctlr.lp;
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break;
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}
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}
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@ -1404,15 +1404,13 @@ static int fcoe_device_notification(struct notifier_block *notifier,
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goto out;
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}
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new_link_up = lp->link_up;
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switch (event) {
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case NETDEV_DOWN:
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case NETDEV_GOING_DOWN:
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new_link_up = 0;
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link_possible = 0;
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break;
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case NETDEV_UP:
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case NETDEV_CHANGE:
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new_link_up = !fcoe_link_ok(lp);
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break;
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case NETDEV_CHANGEMTU:
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mfs = fc->real_dev->mtu -
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@ -1420,23 +1418,19 @@ static int fcoe_device_notification(struct notifier_block *notifier,
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sizeof(struct fcoe_crc_eof));
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if (mfs >= FC_MIN_MAX_FRAME)
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fc_set_mfs(lp, mfs);
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new_link_up = !fcoe_link_ok(lp);
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break;
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case NETDEV_REGISTER:
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break;
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default:
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FC_DBG("unknown event %ld call", event);
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FC_DBG("Unknown event %ld from netdev netlink\n", event);
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}
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if (lp->link_up != new_link_up) {
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if (new_link_up)
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fc_linkup(lp);
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else {
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if (link_possible && !fcoe_link_ok(lp))
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fcoe_ctlr_link_up(&fc->ctlr);
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else if (fcoe_ctlr_link_down(&fc->ctlr)) {
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stats = fc_lport_get_stats(lp);
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stats->LinkFailureCount++;
|
||||
fc_linkdown(lp);
|
||||
fcoe_clean_pending_queue(lp);
|
||||
}
|
||||
}
|
||||
out:
|
||||
return rc;
|
||||
}
|
||||
|
|
@ -1761,7 +1755,7 @@ struct fc_lport *fcoe_hostlist_lookup(const struct net_device *netdev)
|
|||
|
||||
fc = fcoe_hostlist_lookup_softc(netdev);
|
||||
|
||||
return (fc) ? fc->lp : NULL;
|
||||
return (fc) ? fc->ctlr.lp : NULL;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(fcoe_hostlist_lookup);
|
||||
|
||||
|
|
|
|||
|
|
@ -26,10 +26,6 @@
|
|||
#define FCOE_MAX_QUEUE_DEPTH 256
|
||||
#define FCOE_LOW_QUEUE_DEPTH 32
|
||||
|
||||
/* destination address mode */
|
||||
#define FCOE_GW_ADDR_MODE 0x00
|
||||
#define FCOE_FCOUI_ADDR_MODE 0x01
|
||||
|
||||
#define FCOE_WORD_TO_BYTE 4
|
||||
|
||||
#define FCOE_VERSION "0.1"
|
||||
|
|
@ -59,24 +55,17 @@ struct fcoe_percpu_s {
|
|||
*/
|
||||
struct fcoe_softc {
|
||||
struct list_head list;
|
||||
struct fc_lport *lp;
|
||||
struct net_device *real_dev;
|
||||
struct net_device *phys_dev; /* device with ethtool_ops */
|
||||
struct packet_type fcoe_packet_type;
|
||||
struct packet_type fip_packet_type;
|
||||
struct sk_buff_head fcoe_pending_queue;
|
||||
u8 fcoe_pending_queue_active;
|
||||
|
||||
u8 dest_addr[ETH_ALEN];
|
||||
u8 ctl_src_addr[ETH_ALEN];
|
||||
u8 data_src_addr[ETH_ALEN];
|
||||
/*
|
||||
* fcoe protocol address learning related stuff
|
||||
*/
|
||||
u16 flogi_oxid;
|
||||
u8 flogi_progress;
|
||||
u8 address_mode;
|
||||
struct fcoe_ctlr ctlr;
|
||||
};
|
||||
|
||||
#define fcoe_from_ctlr(fc) container_of(fc, struct fcoe_softc, ctlr)
|
||||
|
||||
static inline struct net_device *fcoe_netdev(
|
||||
const struct fc_lport *lp)
|
||||
{
|
||||
|
|
|
|||
File diff suppressed because it is too large
Load diff
|
|
@ -1,4 +1,5 @@
|
|||
/*
|
||||
* Copyright (c) 2008-2009 Cisco Systems, Inc. All rights reserved.
|
||||
* Copyright (c) 2007-2008 Intel Corporation. All rights reserved.
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify it
|
||||
|
|
@ -20,11 +21,142 @@
|
|||
#ifndef _LIBFCOE_H
|
||||
#define _LIBFCOE_H
|
||||
|
||||
#include <linux/etherdevice.h>
|
||||
#include <linux/if_ether.h>
|
||||
#include <linux/netdevice.h>
|
||||
#include <linux/skbuff.h>
|
||||
#include <linux/workqueue.h>
|
||||
#include <scsi/fc/fc_fcoe.h>
|
||||
#include <scsi/libfc.h>
|
||||
|
||||
/*
|
||||
* FIP tunable parameters.
|
||||
*/
|
||||
#define FCOE_CTLR_START_DELAY 2000 /* mS after first adv. to choose FCF */
|
||||
#define FCOE_CTRL_SOL_TOV 2000 /* min. solicitation interval (mS) */
|
||||
#define FCOE_CTLR_FCF_LIMIT 20 /* max. number of FCF entries */
|
||||
|
||||
/**
|
||||
* enum fip_state - internal state of FCoE controller.
|
||||
* @FIP_ST_DISABLED: controller has been disabled or not yet enabled.
|
||||
* @FIP_ST_LINK_WAIT: the physical link is down or unusable.
|
||||
* @FIP_ST_AUTO: determining whether to use FIP or non-FIP mode.
|
||||
* @FIP_ST_NON_FIP: non-FIP mode selected.
|
||||
* @FIP_ST_ENABLED: FIP mode selected.
|
||||
*/
|
||||
enum fip_state {
|
||||
FIP_ST_DISABLED,
|
||||
FIP_ST_LINK_WAIT,
|
||||
FIP_ST_AUTO,
|
||||
FIP_ST_NON_FIP,
|
||||
FIP_ST_ENABLED,
|
||||
};
|
||||
|
||||
/**
|
||||
* struct fcoe_ctlr - FCoE Controller and FIP state.
|
||||
* @state: internal FIP state for network link and FIP or non-FIP mode.
|
||||
* @lp: &fc_lport: libfc local port.
|
||||
* @sel_fcf: currently selected FCF, or NULL.
|
||||
* @fcfs: list of discovered FCFs.
|
||||
* @fcf_count: number of discovered FCF entries.
|
||||
* @sol_time: time when a multicast solicitation was last sent.
|
||||
* @sel_time: time after which to select an FCF.
|
||||
* @port_ka_time: time of next port keep-alive.
|
||||
* @ctlr_ka_time: time of next controller keep-alive.
|
||||
* @timer: timer struct used for all delayed events.
|
||||
* @link_work: &work_struct for doing FCF selection.
|
||||
* @recv_work: &work_struct for receiving FIP frames.
|
||||
* @fip_recv_list: list of received FIP frames.
|
||||
* @user_mfs: configured maximum FC frame size, including FC header.
|
||||
* @flogi_oxid: exchange ID of most recent fabric login.
|
||||
* @flogi_count: number of FLOGI attempts in AUTO mode.
|
||||
* @link: current link status for libfc.
|
||||
* @last_link: last link state reported to libfc.
|
||||
* @map_dest: use the FC_MAP mode for destination MAC addresses.
|
||||
* @dest_addr: MAC address of the selected FC forwarder.
|
||||
* @ctl_src_addr: the native MAC address of our local port.
|
||||
* @data_src_addr: the assigned MAC address for the local port after FLOGI.
|
||||
* @send: LLD-supplied function to handle sending of FIP Ethernet frames.
|
||||
* @update_mac: LLD-supplied function to handle changes to MAC addresses.
|
||||
* @lock: lock protecting this structure.
|
||||
*
|
||||
* This structure is used by all FCoE drivers. It contains information
|
||||
* needed by all FCoE low-level drivers (LLDs) as well as internal state
|
||||
* for FIP, and fields shared with the LLDS.
|
||||
*/
|
||||
struct fcoe_ctlr {
|
||||
enum fip_state state;
|
||||
struct fc_lport *lp;
|
||||
struct fcoe_fcf *sel_fcf;
|
||||
struct list_head fcfs;
|
||||
u16 fcf_count;
|
||||
unsigned long sol_time;
|
||||
unsigned long sel_time;
|
||||
unsigned long port_ka_time;
|
||||
unsigned long ctlr_ka_time;
|
||||
struct timer_list timer;
|
||||
struct work_struct link_work;
|
||||
struct work_struct recv_work;
|
||||
struct sk_buff_head fip_recv_list;
|
||||
u16 user_mfs;
|
||||
u16 flogi_oxid;
|
||||
u8 flogi_count;
|
||||
u8 link;
|
||||
u8 last_link;
|
||||
u8 map_dest;
|
||||
u8 dest_addr[ETH_ALEN];
|
||||
u8 ctl_src_addr[ETH_ALEN];
|
||||
u8 data_src_addr[ETH_ALEN];
|
||||
|
||||
void (*send)(struct fcoe_ctlr *, struct sk_buff *);
|
||||
void (*update_mac)(struct fcoe_ctlr *, u8 *old, u8 *new);
|
||||
spinlock_t lock;
|
||||
};
|
||||
|
||||
/*
|
||||
* struct fcoe_fcf - Fibre-Channel Forwarder.
|
||||
* @list: list linkage.
|
||||
* @time: system time (jiffies) when an advertisement was last received.
|
||||
* @switch_name: WWN of switch from advertisement.
|
||||
* @fabric_name: WWN of fabric from advertisement.
|
||||
* @fc_map: FC_MAP value from advertisement.
|
||||
* @fcf_mac: Ethernet address of the FCF.
|
||||
* @vfid: virtual fabric ID.
|
||||
* @pri: seletion priority, smaller values are better.
|
||||
* @flags: flags received from advertisement.
|
||||
* @fka_period: keep-alive period, in jiffies.
|
||||
*
|
||||
* A Fibre-Channel Forwarder (FCF) is the entity on the Ethernet that
|
||||
* passes FCoE frames on to an FC fabric. This structure represents
|
||||
* one FCF from which advertisements have been received.
|
||||
*
|
||||
* When looking up an FCF, @switch_name, @fabric_name, @fc_map, @vfid, and
|
||||
* @fcf_mac together form the lookup key.
|
||||
*/
|
||||
struct fcoe_fcf {
|
||||
struct list_head list;
|
||||
unsigned long time;
|
||||
|
||||
u64 switch_name;
|
||||
u64 fabric_name;
|
||||
u32 fc_map;
|
||||
u16 vfid;
|
||||
u8 fcf_mac[ETH_ALEN];
|
||||
|
||||
u8 pri;
|
||||
u16 flags;
|
||||
u32 fka_period;
|
||||
};
|
||||
|
||||
/* FIP API functions */
|
||||
void fcoe_ctlr_init(struct fcoe_ctlr *);
|
||||
void fcoe_ctlr_destroy(struct fcoe_ctlr *);
|
||||
void fcoe_ctlr_link_up(struct fcoe_ctlr *);
|
||||
int fcoe_ctlr_link_down(struct fcoe_ctlr *);
|
||||
int fcoe_ctlr_els_send(struct fcoe_ctlr *, struct sk_buff *);
|
||||
void fcoe_ctlr_recv(struct fcoe_ctlr *, struct sk_buff *);
|
||||
int fcoe_ctlr_recv_flogi(struct fcoe_ctlr *, struct fc_frame *fp, u8 *sa);
|
||||
|
||||
/* libfcoe funcs */
|
||||
u64 fcoe_wwn_from_mac(unsigned char mac[], unsigned int, unsigned int);
|
||||
int fcoe_libfc_config(struct fc_lport *, struct libfc_function_template *);
|
||||
|
|
|
|||
Loading…
Reference in a new issue