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path: root/drivers/scsi/fcoe/libfcoe.c
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Diffstat (limited to 'drivers/scsi/fcoe/libfcoe.c')
-rw-r--r--drivers/scsi/fcoe/libfcoe.c1519
1 files changed, 1319 insertions, 200 deletions
diff --git a/drivers/scsi/fcoe/libfcoe.c b/drivers/scsi/fcoe/libfcoe.c
index 50aaa4b..aa503d8 100644
--- a/drivers/scsi/fcoe/libfcoe.c
+++ b/drivers/scsi/fcoe/libfcoe.c
@@ -39,6 +39,7 @@
#include <scsi/fc/fc_fip.h>
#include <scsi/fc/fc_encaps.h>
#include <scsi/fc/fc_fcoe.h>
+#include <scsi/fc/fc_fcp.h>
#include <scsi/libfc.h>
#include <scsi/libfcoe.h>
@@ -54,7 +55,15 @@ static void fcoe_ctlr_timeout(unsigned long);
static void fcoe_ctlr_timer_work(struct work_struct *);
static void fcoe_ctlr_recv_work(struct work_struct *);
+static void fcoe_ctlr_vn_start(struct fcoe_ctlr *);
+static int fcoe_ctlr_vn_recv(struct fcoe_ctlr *, struct sk_buff *);
+static void fcoe_ctlr_vn_timeout(struct fcoe_ctlr *);
+static int fcoe_ctlr_vn_lookup(struct fcoe_ctlr *, u32, u8 *);
+
static u8 fcoe_all_fcfs[ETH_ALEN] = FIP_ALL_FCF_MACS;
+static u8 fcoe_all_enode[ETH_ALEN] = FIP_ALL_ENODE_MACS;
+static u8 fcoe_all_vn2vn[ETH_ALEN] = FIP_ALL_VN2VN_MACS;
+static u8 fcoe_all_p2p[ETH_ALEN] = FIP_ALL_P2P_MACS;
unsigned int libfcoe_debug_logging;
module_param_named(debug_logging, libfcoe_debug_logging, int, S_IRUGO|S_IWUSR);
@@ -80,6 +89,45 @@ do { \
printk(KERN_INFO "host%d: fip: " fmt, \
(fip)->lp->host->host_no, ##args);)
+static const char *fcoe_ctlr_states[] = {
+ [FIP_ST_DISABLED] = "DISABLED",
+ [FIP_ST_LINK_WAIT] = "LINK_WAIT",
+ [FIP_ST_AUTO] = "AUTO",
+ [FIP_ST_NON_FIP] = "NON_FIP",
+ [FIP_ST_ENABLED] = "ENABLED",
+ [FIP_ST_VNMP_START] = "VNMP_START",
+ [FIP_ST_VNMP_PROBE1] = "VNMP_PROBE1",
+ [FIP_ST_VNMP_PROBE2] = "VNMP_PROBE2",
+ [FIP_ST_VNMP_CLAIM] = "VNMP_CLAIM",
+ [FIP_ST_VNMP_UP] = "VNMP_UP",
+};
+
+static const char *fcoe_ctlr_state(enum fip_state state)
+{
+ const char *cp = "unknown";
+
+ if (state < ARRAY_SIZE(fcoe_ctlr_states))
+ cp = fcoe_ctlr_states[state];
+ if (!cp)
+ cp = "unknown";
+ return cp;
+}
+
+/**
+ * fcoe_ctlr_set_state() - Set and do debug printing for the new FIP state.
+ * @fip: The FCoE controller
+ * @state: The new state
+ */
+static void fcoe_ctlr_set_state(struct fcoe_ctlr *fip, enum fip_state state)
+{
+ if (state == fip->state)
+ return;
+ if (fip->lp)
+ LIBFCOE_FIP_DBG(fip, "state %s -> %s\n",
+ fcoe_ctlr_state(fip->state), fcoe_ctlr_state(state));
+ fip->state = state;
+}
+
/**
* fcoe_ctlr_mtu_valid() - Check if a FCF's MTU is valid
* @fcf: The FCF to check
@@ -105,15 +153,29 @@ static inline int fcoe_ctlr_fcf_usable(struct fcoe_fcf *fcf)
}
/**
+ * fcoe_ctlr_map_dest() - Set flag and OUI for mapping destination addresses
+ * @fip: The FCoE controller
+ */
+static void fcoe_ctlr_map_dest(struct fcoe_ctlr *fip)
+{
+ if (fip->mode == FIP_MODE_VN2VN)
+ hton24(fip->dest_addr, FIP_VN_FC_MAP);
+ else
+ hton24(fip->dest_addr, FIP_DEF_FC_MAP);
+ hton24(fip->dest_addr + 3, 0);
+ fip->map_dest = 1;
+}
+
+/**
* fcoe_ctlr_init() - Initialize the FCoE Controller instance
* @fip: The FCoE controller to initialize
*/
-void fcoe_ctlr_init(struct fcoe_ctlr *fip)
+void fcoe_ctlr_init(struct fcoe_ctlr *fip, enum fip_state mode)
{
- fip->state = FIP_ST_LINK_WAIT;
- fip->mode = FIP_ST_AUTO;
+ fcoe_ctlr_set_state(fip, FIP_ST_LINK_WAIT);
+ fip->mode = mode;
INIT_LIST_HEAD(&fip->fcfs);
- spin_lock_init(&fip->lock);
+ mutex_init(&fip->ctlr_mutex);
fip->flogi_oxid = FC_XID_UNKNOWN;
setup_timer(&fip->timer, fcoe_ctlr_timeout, (unsigned long)fip);
INIT_WORK(&fip->timer_work, fcoe_ctlr_timer_work);
@@ -159,10 +221,10 @@ void fcoe_ctlr_destroy(struct fcoe_ctlr *fip)
cancel_work_sync(&fip->recv_work);
skb_queue_purge(&fip->fip_recv_list);
- spin_lock_bh(&fip->lock);
- fip->state = FIP_ST_DISABLED;
+ mutex_lock(&fip->ctlr_mutex);
+ fcoe_ctlr_set_state(fip, FIP_ST_DISABLED);
fcoe_ctlr_reset_fcfs(fip);
- spin_unlock_bh(&fip->lock);
+ mutex_unlock(&fip->ctlr_mutex);
del_timer_sync(&fip->timer);
cancel_work_sync(&fip->timer_work);
}
@@ -255,19 +317,33 @@ static void fcoe_ctlr_solicit(struct fcoe_ctlr *fip, struct fcoe_fcf *fcf)
*/
void fcoe_ctlr_link_up(struct fcoe_ctlr *fip)
{
- spin_lock_bh(&fip->lock);
+ mutex_lock(&fip->ctlr_mutex);
if (fip->state == FIP_ST_NON_FIP || fip->state == FIP_ST_AUTO) {
- spin_unlock_bh(&fip->lock);
+ mutex_unlock(&fip->ctlr_mutex);
fc_linkup(fip->lp);
} else if (fip->state == FIP_ST_LINK_WAIT) {
- fip->state = fip->mode;
- spin_unlock_bh(&fip->lock);
- if (fip->state == FIP_ST_AUTO)
+ fcoe_ctlr_set_state(fip, fip->mode);
+ switch (fip->mode) {
+ default:
+ LIBFCOE_FIP_DBG(fip, "invalid mode %d\n", fip->mode);
+ /* fall-through */
+ case FIP_MODE_AUTO:
LIBFCOE_FIP_DBG(fip, "%s", "setting AUTO mode.\n");
- fc_linkup(fip->lp);
- fcoe_ctlr_solicit(fip, NULL);
+ /* fall-through */
+ case FIP_MODE_FABRIC:
+ case FIP_MODE_NON_FIP:
+ mutex_unlock(&fip->ctlr_mutex);
+ fc_linkup(fip->lp);
+ fcoe_ctlr_solicit(fip, NULL);
+ break;
+ case FIP_MODE_VN2VN:
+ fcoe_ctlr_vn_start(fip);
+ mutex_unlock(&fip->ctlr_mutex);
+ fc_linkup(fip->lp);
+ break;
+ }
} else
- spin_unlock_bh(&fip->lock);
+ mutex_unlock(&fip->ctlr_mutex);
}
EXPORT_SYMBOL(fcoe_ctlr_link_up);
@@ -283,7 +359,7 @@ static void fcoe_ctlr_reset(struct fcoe_ctlr *fip)
fip->port_ka_time = 0;
fip->sol_time = 0;
fip->flogi_oxid = FC_XID_UNKNOWN;
- fip->map_dest = 0;
+ fcoe_ctlr_map_dest(fip);
}
/**
@@ -300,11 +376,11 @@ int fcoe_ctlr_link_down(struct fcoe_ctlr *fip)
int link_dropped;
LIBFCOE_FIP_DBG(fip, "link down.\n");
- spin_lock_bh(&fip->lock);
+ mutex_lock(&fip->ctlr_mutex);
fcoe_ctlr_reset(fip);
link_dropped = fip->state != FIP_ST_LINK_WAIT;
- fip->state = FIP_ST_LINK_WAIT;
- spin_unlock_bh(&fip->lock);
+ fcoe_ctlr_set_state(fip, FIP_ST_LINK_WAIT);
+ mutex_unlock(&fip->ctlr_mutex);
if (link_dropped)
fc_linkdown(fip->lp);
@@ -343,7 +419,7 @@ static void fcoe_ctlr_send_keep_alive(struct fcoe_ctlr *fip,
fcf = fip->sel_fcf;
lp = fip->lp;
- if (!fcf || !lp->port_id)
+ if (!fcf || (ports && !lp->port_id))
return;
len = sizeof(*kal) + ports * sizeof(*vn);
@@ -389,6 +465,7 @@ static void fcoe_ctlr_send_keep_alive(struct fcoe_ctlr *fip,
* @fip: The FCoE controller for the ELS frame
* @dtype: The FIP descriptor type for the frame
* @skb: The FCoE ELS frame including FC header but no FCoE headers
+ * @d_id: The destination port ID.
*
* Returns non-zero error code on failure.
*
@@ -399,58 +476,75 @@ static void fcoe_ctlr_send_keep_alive(struct fcoe_ctlr *fip,
* Ethernet header. The tailroom is for the FIP MAC descriptor.
*/
static int fcoe_ctlr_encaps(struct fcoe_ctlr *fip, struct fc_lport *lport,
- u8 dtype, struct sk_buff *skb)
+ u8 dtype, struct sk_buff *skb, u32 d_id)
{
struct fip_encaps_head {
struct ethhdr eth;
struct fip_header fip;
struct fip_encaps encaps;
} __attribute__((packed)) *cap;
+ struct fc_frame_header *fh;
struct fip_mac_desc *mac;
struct fcoe_fcf *fcf;
size_t dlen;
u16 fip_flags;
+ u8 op;
- fcf = fip->sel_fcf;
- if (!fcf)
- return -ENODEV;
-
- /* set flags according to both FCF and lport's capability on SPMA */
- fip_flags = fcf->flags;
- fip_flags &= fip->spma ? FIP_FL_SPMA | FIP_FL_FPMA : FIP_FL_FPMA;
- if (!fip_flags)
- return -ENODEV;
-
+ fh = (struct fc_frame_header *)skb->data;
+ op = *(u8 *)(fh + 1);
dlen = sizeof(struct fip_encaps) + skb->len; /* len before push */
cap = (struct fip_encaps_head *)skb_push(skb, sizeof(*cap));
-
memset(cap, 0, sizeof(*cap));
- memcpy(cap->eth.h_dest, fcf->fcf_mac, ETH_ALEN);
+
+ if (lport->point_to_multipoint) {
+ if (fcoe_ctlr_vn_lookup(fip, d_id, cap->eth.h_dest))
+ return -ENODEV;
+ fip_flags = 0;
+ } else {
+ fcf = fip->sel_fcf;
+ if (!fcf)
+ return -ENODEV;
+ fip_flags = fcf->flags;
+ fip_flags &= fip->spma ? FIP_FL_SPMA | FIP_FL_FPMA :
+ FIP_FL_FPMA;
+ if (!fip_flags)
+ return -ENODEV;
+ memcpy(cap->eth.h_dest, fcf->fcf_mac, ETH_ALEN);
+ }
memcpy(cap->eth.h_source, fip->ctl_src_addr, ETH_ALEN);
cap->eth.h_proto = htons(ETH_P_FIP);
cap->fip.fip_ver = FIP_VER_ENCAPS(FIP_VER);
cap->fip.fip_op = htons(FIP_OP_LS);
- cap->fip.fip_subcode = FIP_SC_REQ;
- cap->fip.fip_dl_len = htons((dlen + sizeof(*mac)) / FIP_BPW);
+ if (op == ELS_LS_ACC || op == ELS_LS_RJT)
+ cap->fip.fip_subcode = FIP_SC_REP;
+ else
+ cap->fip.fip_subcode = FIP_SC_REQ;
cap->fip.fip_flags = htons(fip_flags);
cap->encaps.fd_desc.fip_dtype = dtype;
cap->encaps.fd_desc.fip_dlen = dlen / FIP_BPW;
- mac = (struct fip_mac_desc *)skb_put(skb, sizeof(*mac));
- memset(mac, 0, sizeof(*mac));
- mac->fd_desc.fip_dtype = FIP_DT_MAC;
- mac->fd_desc.fip_dlen = sizeof(*mac) / FIP_BPW;
- if (dtype != FIP_DT_FLOGI && dtype != FIP_DT_FDISC) {
- memcpy(mac->fd_mac, fip->get_src_addr(lport), ETH_ALEN);
- } else if (fip_flags & FIP_FL_SPMA) {
- LIBFCOE_FIP_DBG(fip, "FLOGI/FDISC sent with SPMA\n");
- memcpy(mac->fd_mac, fip->ctl_src_addr, ETH_ALEN);
- } else {
- LIBFCOE_FIP_DBG(fip, "FLOGI/FDISC sent with FPMA\n");
- /* FPMA only FLOGI must leave the MAC desc set to all 0s */
+ if (op != ELS_LS_RJT) {
+ dlen += sizeof(*mac);
+ mac = (struct fip_mac_desc *)skb_put(skb, sizeof(*mac));
+ memset(mac, 0, sizeof(*mac));
+ mac->fd_desc.fip_dtype = FIP_DT_MAC;
+ mac->fd_desc.fip_dlen = sizeof(*mac) / FIP_BPW;
+ if (dtype != FIP_DT_FLOGI && dtype != FIP_DT_FDISC) {
+ memcpy(mac->fd_mac, fip->get_src_addr(lport), ETH_ALEN);
+ } else if (fip->mode == FIP_MODE_VN2VN) {
+ hton24(mac->fd_mac, FIP_VN_FC_MAP);
+ hton24(mac->fd_mac + 3, fip->port_id);
+ } else if (fip_flags & FIP_FL_SPMA) {
+ LIBFCOE_FIP_DBG(fip, "FLOGI/FDISC sent with SPMA\n");
+ memcpy(mac->fd_mac, fip->ctl_src_addr, ETH_ALEN);
+ } else {
+ LIBFCOE_FIP_DBG(fip, "FLOGI/FDISC sent with FPMA\n");
+ /* FPMA only FLOGI. Must leave the MAC desc zeroed. */
+ }
}
+ cap->fip.fip_dl_len = htons(dlen / FIP_BPW);
skb->protocol = htons(ETH_P_FIP);
skb_reset_mac_header(skb);
@@ -469,19 +563,22 @@ static int fcoe_ctlr_encaps(struct fcoe_ctlr *fip, struct fc_lport *lport,
*
* The caller must check that the length is a multiple of 4.
* The SKB must have enough headroom (28 bytes) and tailroom (8 bytes).
+ * The the skb must also be an fc_frame.
*/
int fcoe_ctlr_els_send(struct fcoe_ctlr *fip, struct fc_lport *lport,
struct sk_buff *skb)
{
+ struct fc_frame *fp;
struct fc_frame_header *fh;
u16 old_xid;
u8 op;
u8 mac[ETH_ALEN];
+ fp = container_of(skb, struct fc_frame, skb);
fh = (struct fc_frame_header *)skb->data;
op = *(u8 *)(fh + 1);
- if (op == ELS_FLOGI) {
+ if (op == ELS_FLOGI && fip->mode != FIP_MODE_VN2VN) {
old_xid = fip->flogi_oxid;
fip->flogi_oxid = ntohs(fh->fh_ox_id);
if (fip->state == FIP_ST_AUTO) {
@@ -490,18 +587,17 @@ int fcoe_ctlr_els_send(struct fcoe_ctlr *fip, struct fc_lport *lport,
fip->flogi_count++;
if (fip->flogi_count < 3)
goto drop;
- fip->map_dest = 1;
+ fcoe_ctlr_map_dest(fip);
return 0;
}
if (fip->state == FIP_ST_NON_FIP)
- fip->map_dest = 1;
+ fcoe_ctlr_map_dest(fip);
}
if (fip->state == FIP_ST_NON_FIP)
return 0;
- if (!fip->sel_fcf)
+ if (!fip->sel_fcf && fip->mode != FIP_MODE_VN2VN)
goto drop;
-
switch (op) {
case ELS_FLOGI:
op = FIP_DT_FLOGI;
@@ -512,36 +608,49 @@ int fcoe_ctlr_els_send(struct fcoe_ctlr *fip, struct fc_lport *lport,
op = FIP_DT_FDISC;
break;
case ELS_LOGO:
- if (fip->state != FIP_ST_ENABLED)
- return 0;
- if (ntoh24(fh->fh_d_id) != FC_FID_FLOGI)
- return 0;
+ if (fip->mode == FIP_MODE_VN2VN) {
+ if (fip->state != FIP_ST_VNMP_UP)
+ return -EINVAL;
+ if (ntoh24(fh->fh_d_id) == FC_FID_FLOGI)
+ return -EINVAL;
+ } else {
+ if (fip->state != FIP_ST_ENABLED)
+ return 0;
+ if (ntoh24(fh->fh_d_id) != FC_FID_FLOGI)
+ return 0;
+ }
op = FIP_DT_LOGO;
break;
case ELS_LS_ACC:
- if (fip->flogi_oxid == FC_XID_UNKNOWN)
- return 0;
- if (!ntoh24(fh->fh_s_id))
- return 0;
- if (fip->state == FIP_ST_AUTO)
- return 0;
/*
- * Here we must've gotten an SID by accepting an FLOGI
+ * If non-FIP, we may have gotten an SID by accepting an FLOGI
* from a point-to-point connection. Switch to using
* the source mac based on the SID. The destination
* MAC in this case would have been set by receving the
* FLOGI.
*/
- fip->flogi_oxid = FC_XID_UNKNOWN;
- fc_fcoe_set_mac(mac, fh->fh_d_id);
- fip->update_mac(lport, mac);
+ if (fip->state == FIP_ST_NON_FIP) {
+ if (fip->flogi_oxid == FC_XID_UNKNOWN)
+ return 0;
+ fip->flogi_oxid = FC_XID_UNKNOWN;
+ fc_fcoe_set_mac(mac, fh->fh_d_id);
+ fip->update_mac(lport, mac);
+ }
+ /* fall through */
+ case ELS_LS_RJT:
+ op = fr_encaps(fp);
+ if (op)
+ break;
return 0;
default:
- if (fip->state != FIP_ST_ENABLED)
+ if (fip->state != FIP_ST_ENABLED &&
+ fip->state != FIP_ST_VNMP_UP)
goto drop;
return 0;
}
- if (fcoe_ctlr_encaps(fip, lport, op, skb))
+ LIBFCOE_FIP_DBG(fip, "els_send op %u d_id %x\n",
+ op, ntoh24(fh->fh_d_id));
+ if (fcoe_ctlr_encaps(fip, lport, op, skb, ntoh24(fh->fh_d_id)))
goto drop;
fip->send(fip, skb);
return -EINPROGRESS;
@@ -557,60 +666,66 @@ EXPORT_SYMBOL(fcoe_ctlr_els_send);
*
* Called with lock held and preemption disabled.
*
- * An FCF is considered old if we have missed three advertisements.
- * That is, there have been no valid advertisement from it for three
- * times its keep-alive period including fuzz.
+ * An FCF is considered old if we have missed two advertisements.
+ * That is, there have been no valid advertisement from it for 2.5
+ * times its keep-alive period.
*
* In addition, determine the time when an FCF selection can occur.
*
* Also, increment the MissDiscAdvCount when no advertisement is received
* for the corresponding FCF for 1.5 * FKA_ADV_PERIOD (FC-BB-5 LESB).
+ *
+ * Returns the time in jiffies for the next call.
*/
-static void fcoe_ctlr_age_fcfs(struct fcoe_ctlr *fip)
+static unsigned long fcoe_ctlr_age_fcfs(struct fcoe_ctlr *fip)
{
struct fcoe_fcf *fcf;
struct fcoe_fcf *next;
+ unsigned long next_timer = jiffies + msecs_to_jiffies(FIP_VN_KA_PERIOD);
+ unsigned long deadline;
unsigned long sel_time = 0;
- unsigned long mda_time = 0;
struct fcoe_dev_stats *stats;
+ stats = per_cpu_ptr(fip->lp->dev_stats, get_cpu());
+
list_for_each_entry_safe(fcf, next, &fip->fcfs, list) {
- mda_time = fcf->fka_period + (fcf->fka_period >> 1);
- if ((fip->sel_fcf == fcf) &&
- (time_after(jiffies, fcf->time + mda_time))) {
- mod_timer(&fip->timer, jiffies + mda_time);
- stats = per_cpu_ptr(fip->lp->dev_stats,
- smp_processor_id());
- stats->MissDiscAdvCount++;
- printk(KERN_INFO "libfcoe: host%d: Missing Discovery "
- "Advertisement for fab %16.16llx count %lld\n",
- fip->lp->host->host_no, fcf->fabric_name,
- stats->MissDiscAdvCount);
+ deadline = fcf->time + fcf->fka_period + fcf->fka_period / 2;
+ if (fip->sel_fcf == fcf) {
+ if (time_after(jiffies, deadline)) {
+ stats->MissDiscAdvCount++;
+ printk(KERN_INFO "libfcoe: host%d: "
+ "Missing Discovery Advertisement "
+ "for fab %16.16llx count %lld\n",
+ fip->lp->host->host_no, fcf->fabric_name,
+ stats->MissDiscAdvCount);
+ } else if (time_after(next_timer, deadline))
+ next_timer = deadline;
}
- if (time_after(jiffies, fcf->time + fcf->fka_period * 3 +
- msecs_to_jiffies(FIP_FCF_FUZZ * 3))) {
+
+ deadline += fcf->fka_period;
+ if (time_after_eq(jiffies, deadline)) {
if (fip->sel_fcf == fcf)
fip->sel_fcf = NULL;
list_del(&fcf->list);
WARN_ON(!fip->fcf_count);
fip->fcf_count--;
kfree(fcf);
- stats = per_cpu_ptr(fip->lp->dev_stats,
- smp_processor_id());
stats->VLinkFailureCount++;
- } else if (fcoe_ctlr_mtu_valid(fcf) &&
- (!sel_time || time_before(sel_time, fcf->time))) {
- sel_time = fcf->time;
+ } else {
+ if (time_after(next_timer, deadline))
+ next_timer = deadline;
+ if (fcoe_ctlr_mtu_valid(fcf) &&
+ (!sel_time || time_before(sel_time, fcf->time)))
+ sel_time = fcf->time;
}
}
- if (sel_time) {
+ put_cpu();
+ if (sel_time && !fip->sel_fcf && !fip->sel_time) {
sel_time += msecs_to_jiffies(FCOE_CTLR_START_DELAY);
fip->sel_time = sel_time;
- if (time_before(sel_time, fip->timer.expires))
- mod_timer(&fip->timer, sel_time);
- } else {
- fip->sel_time = 0;
}
+
+ return next_timer;
}
/**
@@ -633,6 +748,7 @@ static int fcoe_ctlr_parse_adv(struct fcoe_ctlr *fip,
unsigned long t;
size_t rlen;
size_t dlen;
+ u32 desc_mask;
memset(fcf, 0, sizeof(*fcf));
fcf->fka_period = msecs_to_jiffies(FCOE_CTLR_DEF_FKA);
@@ -640,6 +756,12 @@ static int fcoe_ctlr_parse_adv(struct fcoe_ctlr *fip,
fiph = (struct fip_header *)skb->data;
fcf->flags = ntohs(fiph->fip_flags);
+ /*
+ * mask of required descriptors. validating each one clears its bit.
+ */
+ desc_mask = BIT(FIP_DT_PRI) | BIT(FIP_DT_MAC) | BIT(FIP_DT_NAME) |
+ BIT(FIP_DT_FAB) | BIT(FIP_DT_FKA);
+
rlen = ntohs(fiph->fip_dl_len) * 4;
if (rlen + sizeof(*fiph) > skb->len)
return -EINVAL;
@@ -649,11 +771,19 @@ static int fcoe_ctlr_parse_adv(struct fcoe_ctlr *fip,
dlen = desc->fip_dlen * FIP_BPW;
if (dlen < sizeof(*desc) || dlen > rlen)
return -EINVAL;
+ /* Drop Adv if there are duplicate critical descriptors */
+ if ((desc->fip_dtype < 32) &&
+ !(desc_mask & 1U << desc->fip_dtype)) {
+ LIBFCOE_FIP_DBG(fip, "Duplicate Critical "
+ "Descriptors in FIP adv\n");
+ return -EINVAL;
+ }
switch (desc->fip_dtype) {
case FIP_DT_PRI:
if (dlen != sizeof(struct fip_pri_desc))
goto len_err;
fcf->pri = ((struct fip_pri_desc *)desc)->fd_pri;
+ desc_mask &= ~BIT(FIP_DT_PRI);
break;
case FIP_DT_MAC:
if (dlen != sizeof(struct fip_mac_desc))
@@ -662,16 +792,19 @@ static int fcoe_ctlr_parse_adv(struct fcoe_ctlr *fip,
((struct fip_mac_desc *)desc)->fd_mac,
ETH_ALEN);
if (!is_valid_ether_addr(fcf->fcf_mac)) {
- LIBFCOE_FIP_DBG(fip, "Invalid MAC address "
- "in FIP adv\n");
+ LIBFCOE_FIP_DBG(fip,
+ "Invalid MAC addr %pM in FIP adv\n",
+ fcf->fcf_mac);
return -EINVAL;
}
+ desc_mask &= ~BIT(FIP_DT_MAC);
break;
case FIP_DT_NAME:
if (dlen != sizeof(struct fip_wwn_desc))
goto len_err;
wwn = (struct fip_wwn_desc *)desc;
fcf->switch_name = get_unaligned_be64(&wwn->fd_wwn);
+ desc_mask &= ~BIT(FIP_DT_NAME);
break;
case FIP_DT_FAB:
if (dlen != sizeof(struct fip_fab_desc))
@@ -680,6 +813,7 @@ static int fcoe_ctlr_parse_adv(struct fcoe_ctlr *fip,
fcf->fabric_name = get_unaligned_be64(&fab->fd_wwn);
fcf->vfid = ntohs(fab->fd_vfid);
fcf->fc_map = ntoh24(fab->fd_map);
+ desc_mask &= ~BIT(FIP_DT_FAB);
break;
case FIP_DT_FKA:
if (dlen != sizeof(struct fip_fka_desc))
@@ -690,6 +824,7 @@ static int fcoe_ctlr_parse_adv(struct fcoe_ctlr *fip,
t = ntohl(fka->fd_fka_period);
if (t >= FCOE_CTLR_MIN_FKA)
fcf->fka_period = msecs_to_jiffies(t);
+ desc_mask &= ~BIT(FIP_DT_FKA);
break;
case FIP_DT_MAP_OUI:
case FIP_DT_FCOE_SIZE:
@@ -703,15 +838,20 @@ static int fcoe_ctlr_parse_adv(struct fcoe_ctlr *fip,
/* standard says ignore unknown descriptors >= 128 */
if (desc->fip_dtype < FIP_DT_VENDOR_BASE)
return -EINVAL;
- continue;
+ break;
}
desc = (struct fip_desc *)((char *)desc + dlen);
rlen -= dlen;
}
if (!fcf->fc_map || (fcf->fc_map & 0x10000))
return -EINVAL;
- if (!fcf->switch_name || !fcf->fabric_name)
+ if (!fcf->switch_name)
+ return -EINVAL;
+ if (desc_mask) {
+ LIBFCOE_FIP_DBG(fip, "adv missing descriptors mask %x\n",
+ desc_mask);
return -EINVAL;
+ }
return 0;
len_err:
@@ -737,7 +877,7 @@ static void fcoe_ctlr_recv_adv(struct fcoe_ctlr *fip, struct sk_buff *skb)
if (fcoe_ctlr_parse_adv(fip, skb, &new))
return;
- spin_lock_bh(&fip->lock);
+ mutex_lock(&fip->ctlr_mutex);
first = list_empty(&fip->fcfs);
found = NULL;
list_for_each_entry(fcf, &fip->fcfs, list) {
@@ -762,18 +902,21 @@ static void fcoe_ctlr_recv_adv(struct fcoe_ctlr *fip, struct sk_buff *skb)
list_add(&fcf->list, &fip->fcfs);
} else {
/*
- * Flags in advertisements are ignored once the FCF is
- * selected. Flags in unsolicited advertisements are
- * ignored after a usable solicited advertisement
- * has been received.
+ * Update the FCF's keep-alive descriptor flags.
+ * Other flag changes from new advertisements are
+ * ignored after a solicited advertisement is
+ * received and the FCF is selectable (usable).
*/
- if (fcf == fip->sel_fcf) {
+ fcf->fd_flags = new.fd_flags;
+ if (!fcoe_ctlr_fcf_usable(fcf))
+ fcf->flags = new.flags;
+
+ if (fcf == fip->sel_fcf && !fcf->fd_flags) {
fip->ctlr_ka_time -= fcf->fka_period;
fip->ctlr_ka_time += new.fka_period;
if (time_before(fip->ctlr_ka_time, fip->timer.expires))
mod_timer(&fip->timer, fip->ctlr_ka_time);
- } else if (!fcoe_ctlr_fcf_usable(fcf))
- fcf->flags = new.flags;
+ }
fcf->fka_period = new.fka_period;
memcpy(fcf->fcf_mac, new.fcf_mac, ETH_ALEN);
}
@@ -805,7 +948,7 @@ static void fcoe_ctlr_recv_adv(struct fcoe_ctlr *fip, struct sk_buff *skb)
* If this is the first validated FCF, note the time and
* set a timer to trigger selection.
*/
- if (mtu_valid && !fip->sel_time && fcoe_ctlr_fcf_usable(fcf)) {
+ if (mtu_valid && !fip->sel_fcf && fcoe_ctlr_fcf_usable(fcf)) {
fip->sel_time = jiffies +
msecs_to_jiffies(FCOE_CTLR_START_DELAY);
if (!timer_pending(&fip->timer) ||
@@ -813,7 +956,7 @@ static void fcoe_ctlr_recv_adv(struct fcoe_ctlr *fip, struct sk_buff *skb)
mod_timer(&fip->timer, fip->sel_time);
}
out:
- spin_unlock_bh(&fip->lock);
+ mutex_unlock(&fip->ctlr_mutex);
}
/**
@@ -837,6 +980,8 @@ static void fcoe_ctlr_recv_els(struct fcoe_ctlr *fip, struct sk_buff *skb)
size_t els_len = 0;
size_t rlen;
size_t dlen;
+ u32 desc_mask = 0;
+ u32 desc_cnt = 0;
fiph = (struct fip_header *)skb->data;
sub = fiph->fip_subcode;
@@ -849,27 +994,42 @@ static void fcoe_ctlr_recv_els(struct fcoe_ctlr *fip, struct sk_buff *skb)
desc = (struct fip_desc *)(fiph + 1);
while (rlen > 0) {
+ desc_cnt++;
dlen = desc->fip_dlen * FIP_BPW;
if (dlen < sizeof(*desc) || dlen > rlen)
goto drop;
+ /* Drop ELS if there are duplicate critical descriptors */
+ if (desc->fip_dtype < 32) {
+ if (desc_mask & 1U << desc->fip_dtype) {
+ LIBFCOE_FIP_DBG(fip, "Duplicate Critical "
+ "Descriptors in FIP ELS\n");
+ goto drop;
+ }
+ desc_mask |= (1 << desc->fip_dtype);
+ }
switch (desc->fip_dtype) {
case FIP_DT_MAC:
+ if (desc_cnt == 1) {
+ LIBFCOE_FIP_DBG(fip, "FIP descriptors "
+ "received out of order\n");
+ goto drop;
+ }
+
if (dlen != sizeof(struct fip_mac_desc))
goto len_err;
memcpy(granted_mac,
((struct fip_mac_desc *)desc)->fd_mac,
ETH_ALEN);
- if (!is_valid_ether_addr(granted_mac)) {
- LIBFCOE_FIP_DBG(fip, "Invalid MAC address "
- "in FIP ELS\n");
- goto drop;
- }
- memcpy(fr_cb(fp)->granted_mac, granted_mac, ETH_ALEN);
break;
case FIP_DT_FLOGI:
case FIP_DT_FDISC:
case FIP_DT_LOGO:
case FIP_DT_ELP:
+ if (desc_cnt != 1) {
+ LIBFCOE_FIP_DBG(fip, "FIP descriptors "
+ "received out of order\n");
+ goto drop;
+ }
if (fh)
goto drop;
if (dlen < sizeof(*els) + sizeof(*fh) + 1)
@@ -885,7 +1045,12 @@ static void fcoe_ctlr_recv_els(struct fcoe_ctlr *fip, struct sk_buff *skb)
/* standard says ignore unknown descriptors >= 128 */
if (desc->fip_dtype < FIP_DT_VENDOR_BASE)
goto drop;
- continue;
+ if (desc_cnt <= 2) {
+ LIBFCOE_FIP_DBG(fip, "FIP descriptors "
+ "received out of order\n");
+ goto drop;
+ }
+ break;
}
desc = (struct fip_desc *)((char *)desc + dlen);
rlen -= dlen;
@@ -895,10 +1060,27 @@ static void fcoe_ctlr_recv_els(struct fcoe_ctlr *fip, struct sk_buff *skb)
goto drop;
els_op = *(u8 *)(fh + 1);
- if (els_dtype == FIP_DT_FLOGI && sub == FIP_SC_REP &&
- fip->flogi_oxid == ntohs(fh->fh_ox_id) &&
- els_op == ELS_LS_ACC && is_valid_ether_addr(granted_mac))
- fip->flogi_oxid = FC_XID_UNKNOWN;
+ if ((els_dtype == FIP_DT_FLOGI || els_dtype == FIP_DT_FDISC) &&
+ sub == FIP_SC_REP && els_op == ELS_LS_ACC &&
+ fip->mode != FIP_MODE_VN2VN) {
+ if (!is_valid_ether_addr(granted_mac)) {
+ LIBFCOE_FIP_DBG(fip,
+ "Invalid MAC address %pM in FIP ELS\n",
+ granted_mac);
+ goto drop;
+ }
+ memcpy(fr_cb(fp)->granted_mac, granted_mac, ETH_ALEN);
+
+ if (fip->flogi_oxid == ntohs(fh->fh_ox_id))
+ fip->flogi_oxid = FC_XID_UNKNOWN;
+ }
+
+ if ((desc_cnt == 0) || ((els_op != ELS_LS_RJT) &&
+ (!(1U << FIP_DT_MAC & desc_mask)))) {
+ LIBFCOE_FIP_DBG(fip, "Missing critical descriptors "
+ "in FIP ELS\n");
+ goto drop;
+ }
/*
* Convert skb into an fc_frame containing only the ELS.
@@ -910,6 +1092,7 @@ static void fcoe_ctlr_recv_els(struct fcoe_ctlr *fip, struct sk_buff *skb)
fr_sof(fp) = FC_SOF_I3;
fr_eof(fp) = FC_EOF_T;
fr_dev(fp) = lport;
+ fr_encaps(fp) = els_dtype;
stats = per_cpu_ptr(lport->dev_stats, get_cpu());
stats->RxFrames++;
@@ -945,7 +1128,9 @@ static void fcoe_ctlr_recv_clr_vlink(struct fcoe_ctlr *fip,
size_t dlen;
struct fcoe_fcf *fcf = fip->sel_fcf;
struct fc_lport *lport = fip->lp;
- u32 desc_mask;
+ struct fc_lport *vn_port = NULL;
+ u32 desc_mask;
+ int is_vn_port = 0;
LIBFCOE_FIP_DBG(fip, "Clear Virtual Link received\n");
@@ -963,6 +1148,13 @@ static void fcoe_ctlr_recv_clr_vlink(struct fcoe_ctlr *fip,
dlen = desc->fip_dlen * FIP_BPW;
if (dlen > rlen)
return;
+ /* Drop CVL if there are duplicate critical descriptors */
+ if ((desc->fip_dtype < 32) &&
+ !(desc_mask & 1U << desc->fip_dtype)) {
+ LIBFCOE_FIP_DBG(fip, "Duplicate Critical "
+ "Descriptors in FIP CVL\n");
+ return;
+ }
switch (desc->fip_dtype) {
case FIP_DT_MAC:
mp = (struct fip_mac_desc *)desc;
@@ -987,8 +1179,26 @@ static void fcoe_ctlr_recv_clr_vlink(struct fcoe_ctlr *fip,
if (compare_ether_addr(vp->fd_mac,
fip->get_src_addr(lport)) == 0 &&
get_unaligned_be64(&vp->fd_wwpn) == lport->wwpn &&
- ntoh24(vp->fd_fc_id) == lport->port_id)
+ ntoh24(vp->fd_fc_id) == lport->port_id) {
desc_mask &= ~BIT(FIP_DT_VN_ID);
+ break;
+ }
+ /* check if clr_vlink is for NPIV port */
+ mutex_lock(&lport->lp_mutex);
+ list_for_each_entry(vn_port, &lport->vports, list) {
+ if (compare_ether_addr(vp->fd_mac,
+ fip->get_src_addr(vn_port)) == 0 &&
+ (get_unaligned_be64(&vp->fd_wwpn)
+ == vn_port->wwpn) &&
+ (ntoh24(vp->fd_fc_id) ==
+ fc_host_port_id(vn_port->host))) {
+ desc_mask &= ~BIT(FIP_DT_VN_ID);
+ is_vn_port = 1;
+ break;
+ }
+ }
+ mutex_unlock(&lport->lp_mutex);
+
break;
default:
/* standard says ignore unknown descriptors >= 128 */
@@ -1009,14 +1219,19 @@ static void fcoe_ctlr_recv_clr_vlink(struct fcoe_ctlr *fip,
} else {
LIBFCOE_FIP_DBG(fip, "performing Clear Virtual Link\n");
- spin_lock_bh(&fip->lock);
- per_cpu_ptr(lport->dev_stats,
- smp_processor_id())->VLinkFailureCount++;
- fcoe_ctlr_reset(fip);
- spin_unlock_bh(&fip->lock);
-
- fc_lport_reset(fip->lp);
- fcoe_ctlr_solicit(fip, NULL);
+ if (is_vn_port)
+ fc_lport_reset(vn_port);
+ else {
+ mutex_lock(&fip->ctlr_mutex);
+ per_cpu_ptr(lport->dev_stats,
+ get_cpu())->VLinkFailureCount++;
+ put_cpu();
+ fcoe_ctlr_reset(fip);
+ mutex_unlock(&fip->ctlr_mutex);
+
+ fc_lport_reset(fip->lp);
+ fcoe_ctlr_solicit(fip, NULL);
+ }
}
}
@@ -1054,8 +1269,13 @@ static int fcoe_ctlr_recv_handler(struct fcoe_ctlr *fip, struct sk_buff *skb)
if (skb->len < sizeof(*fiph))
goto drop;
eh = eth_hdr(skb);
- if (compare_ether_addr(eh->h_dest, fip->ctl_src_addr) &&
- compare_ether_addr(eh->h_dest, FIP_ALL_ENODE_MACS))
+ if (fip->mode == FIP_MODE_VN2VN) {
+ if (compare_ether_addr(eh->h_dest, fip->ctl_src_addr) &&
+ compare_ether_addr(eh->h_dest, fcoe_all_vn2vn) &&
+ compare_ether_addr(eh->h_dest, fcoe_all_p2p))
+ goto drop;
+ } else if (compare_ether_addr(eh->h_dest, fip->ctl_src_addr) &&
+ compare_ether_addr(eh->h_dest, fcoe_all_enode))
goto drop;
fiph = (struct fip_header *)skb->data;
op = ntohs(fiph->fip_op);
@@ -1066,22 +1286,31 @@ static int fcoe_ctlr_recv_handler(struct fcoe_ctlr *fip, struct sk_buff *skb)
if (ntohs(fiph->fip_dl_len) * FIP_BPW + sizeof(*fiph) > skb->len)
goto drop;
- spin_lock_bh(&fip->lock);
+ mutex_lock(&fip->ctlr_mutex);
state = fip->state;
if (state == FIP_ST_AUTO) {
fip->map_dest = 0;
- fip->state = FIP_ST_ENABLED;
+ fcoe_ctlr_set_state(fip, FIP_ST_ENABLED);
state = FIP_ST_ENABLED;
LIBFCOE_FIP_DBG(fip, "Using FIP mode\n");
}
- spin_unlock_bh(&fip->lock);
- if (state != FIP_ST_ENABLED)
+ mutex_unlock(&fip->ctlr_mutex);
+
+ if (fip->mode == FIP_MODE_VN2VN && op == FIP_OP_VN2VN)
+ return fcoe_ctlr_vn_recv(fip, skb);
+
+ if (state != FIP_ST_ENABLED && state != FIP_ST_VNMP_UP &&
+ state != FIP_ST_VNMP_CLAIM)
goto drop;
if (op == FIP_OP_LS) {
fcoe_ctlr_recv_els(fip, skb); /* consumes skb */
return 0;
}
+
+ if (state != FIP_ST_ENABLED)
+ goto drop;
+
if (op == FIP_OP_DISC && sub == FIP_SC_ADV)
fcoe_ctlr_recv_adv(fip, skb);
else if (op == FIP_OP_CTRL && sub == FIP_SC_CLR_VLINK)
@@ -1140,30 +1369,53 @@ static void fcoe_ctlr_select(struct fcoe_ctlr *fip)
/**
* fcoe_ctlr_timeout() - FIP timeout handler
* @arg: The FCoE controller that timed out
- *
- * Ages FCFs. Triggers FCF selection if possible. Sends keep-alives.
*/
static void fcoe_ctlr_timeout(unsigned long arg)
{
struct fcoe_ctlr *fip = (struct fcoe_ctlr *)arg;
+
+ schedule_work(&fip->timer_work);
+}
+
+/**
+ * fcoe_ctlr_timer_work() - Worker thread function for timer work
+ * @work: Handle to a FCoE controller
+ *
+ * Ages FCFs. Triggers FCF selection if possible.
+ * Sends keep-alives and resets.
+ */
+static void fcoe_ctlr_timer_work(struct work_struct *work)
+{
+ struct fcoe_ctlr *fip;
+ struct fc_lport *vport;
+ u8 *mac;
+ u8 reset = 0;
+ u8 send_ctlr_ka = 0;
+ u8 send_port_ka = 0;
struct fcoe_fcf *sel;
struct fcoe_fcf *fcf;
- unsigned long next_timer = jiffies + msecs_to_jiffies(FIP_VN_KA_PERIOD);
+ unsigned long next_timer;
- spin_lock_bh(&fip->lock);
+ fip = container_of(work, struct fcoe_ctlr, timer_work);
+ if (fip->mode == FIP_MODE_VN2VN)
+ return fcoe_ctlr_vn_timeout(fip);
+ mutex_lock(&fip->ctlr_mutex);
if (fip->state == FIP_ST_DISABLED) {
- spin_unlock_bh(&fip->lock);
+ mutex_unlock(&fip->ctlr_mutex);
return;
}
fcf = fip->sel_fcf;
- fcoe_ctlr_age_fcfs(fip);
+ next_timer = fcoe_ctlr_age_fcfs(fip);
sel = fip->sel_fcf;
- if (!sel && fip->sel_time && time_after_eq(jiffies, fip->sel_time)) {
- fcoe_ctlr_select(fip);
- sel = fip->sel_fcf;
- fip->sel_time = 0;
+ if (!sel && fip->sel_time) {
+ if (time_after_eq(jiffies, fip->sel_time)) {
+ fcoe_ctlr_select(fip);
+ sel = fip->sel_fcf;
+ fip->sel_time = 0;
+ } else if (time_after(next_timer, fip->sel_time))
+ next_timer = fip->sel_time;
}
if (sel != fcf) {
@@ -1173,23 +1425,25 @@ static void fcoe_ctlr_timeout(unsigned long arg)
"Fibre-Channel Forwarder MAC %pM\n",
fip->lp->host->host_no, sel->fcf_mac);
memcpy(fip->dest_addr, sel->fcf_mac, ETH_ALEN);
+ fip->map_dest = 0;
fip->port_ka_time = jiffies +
msecs_to_jiffies(FIP_VN_KA_PERIOD);
fip->ctlr_ka_time = jiffies + sel->fka_period;
+ if (time_after(next_timer, fip->ctlr_ka_time))
+ next_timer = fip->ctlr_ka_time;
} else {
printk(KERN_NOTICE "libfcoe: host%d: "
"FIP Fibre-Channel Forwarder timed out. "
"Starting FCF discovery.\n",
fip->lp->host->host_no);
- fip->reset_req = 1;
- schedule_work(&fip->timer_work);
+ reset = 1;
}
}
if (sel && !sel->fd_flags) {
if (time_after_eq(jiffies, fip->ctlr_ka_time)) {
fip->ctlr_ka_time = jiffies + sel->fka_period;
- fip->send_ctlr_ka = 1;
+ send_ctlr_ka = 1;
}
if (time_after(next_timer, fip->ctlr_ka_time))
next_timer = fip->ctlr_ka_time;
@@ -1197,50 +1451,25 @@ static void fcoe_ctlr_timeout(unsigned long arg)
if (time_after_eq(jiffies, fip->port_ka_time)) {
fip->port_ka_time = jiffies +
msecs_to_jiffies(FIP_VN_KA_PERIOD);
- fip->send_port_ka = 1;
+ send_port_ka = 1;
}
if (time_after(next_timer, fip->port_ka_time))
next_timer = fip->port_ka_time;
- mod_timer(&fip->timer, next_timer);
- } else if (fip->sel_time) {
- next_timer = fip->sel_time +
- msecs_to_jiffies(FCOE_CTLR_START_DELAY);
- mod_timer(&fip->timer, next_timer);
}
- if (fip->send_ctlr_ka || fip->send_port_ka)
- schedule_work(&fip->timer_work);
- spin_unlock_bh(&fip->lock);
-}
-
-/**
- * fcoe_ctlr_timer_work() - Worker thread function for timer work
- * @work: Handle to a FCoE controller
- *
- * Sends keep-alives and resets which must not
- * be called from the timer directly, since they use a mutex.
- */
-static void fcoe_ctlr_timer_work(struct work_struct *work)
-{
- struct fcoe_ctlr *fip;
- struct fc_lport *vport;
- u8 *mac;
- int reset;
-
- fip = container_of(work, struct fcoe_ctlr, timer_work);
- spin_lock_bh(&fip->lock);
- reset = fip->reset_req;
- fip->reset_req = 0;
- spin_unlock_bh(&fip->lock);
+ if (!list_empty(&fip->fcfs))
+ mod_timer(&fip->timer, next_timer);
+ mutex_unlock(&fip->ctlr_mutex);
- if (reset)
+ if (reset) {
fc_lport_reset(fip->lp);
+ /* restart things with a solicitation */
+ fcoe_ctlr_solicit(fip, NULL);
+ }
- if (fip->send_ctlr_ka) {
- fip->send_ctlr_ka = 0;
+ if (send_ctlr_ka)
fcoe_ctlr_send_keep_alive(fip, NULL, 0, fip->ctl_src_addr);
- }
- if (fip->send_port_ka) {
- fip->send_port_ka = 0;
+
+ if (send_port_ka) {
mutex_lock(&fip->lp->lp_mutex);
mac = fip->get_src_addr(fip->lp);
fcoe_ctlr_send_keep_alive(fip, fip->lp, 1, mac);
@@ -1297,12 +1526,12 @@ int fcoe_ctlr_recv_flogi(struct fcoe_ctlr *fip, struct fc_lport *lport,
if (op == ELS_LS_ACC && fh->fh_r_ctl == FC_RCTL_ELS_REP &&
fip->flogi_oxid == ntohs(fh->fh_ox_id)) {
- spin_lock_bh(&fip->lock);
+ mutex_lock(&fip->ctlr_mutex);
if (fip->state != FIP_ST_AUTO && fip->state != FIP_ST_NON_FIP) {
- spin_unlock_bh(&fip->lock);
+ mutex_unlock(&fip->ctlr_mutex);
return -EINVAL;
}
- fip->state = FIP_ST_NON_FIP;
+ fcoe_ctlr_set_state(fip, FIP_ST_NON_FIP);
LIBFCOE_FIP_DBG(fip,
"received FLOGI LS_ACC using non-FIP mode\n");
@@ -1313,28 +1542,28 @@ int fcoe_ctlr_recv_flogi(struct fcoe_ctlr *fip, struct fc_lport *lport,
* Otherwise we use the FCoE gateway addr
*/
if (!compare_ether_addr(sa, (u8[6])FC_FCOE_FLOGI_MAC)) {
- fip->map_dest = 1;
+ fcoe_ctlr_map_dest(fip);
} else {
memcpy(fip->dest_addr, sa, ETH_ALEN);
fip->map_dest = 0;
}
fip->flogi_oxid = FC_XID_UNKNOWN;
- spin_unlock_bh(&fip->lock);
+ mutex_unlock(&fip->ctlr_mutex);
fc_fcoe_set_mac(fr_cb(fp)->granted_mac, fh->fh_d_id);
} else if (op == ELS_FLOGI && fh->fh_r_ctl == FC_RCTL_ELS_REQ && sa) {
/*
* Save source MAC for point-to-point responses.
*/
- spin_lock_bh(&fip->lock);
+ mutex_lock(&fip->ctlr_mutex);
if (fip->state == FIP_ST_AUTO || fip->state == FIP_ST_NON_FIP) {
memcpy(fip->dest_addr, sa, ETH_ALEN);
fip->map_dest = 0;
if (fip->state == FIP_ST_AUTO)
LIBFCOE_FIP_DBG(fip, "received non-FIP FLOGI. "
"Setting non-FIP mode\n");
- fip->state = FIP_ST_NON_FIP;
+ fcoe_ctlr_set_state(fip, FIP_ST_NON_FIP);
}
- spin_unlock_bh(&fip->lock);
+ mutex_unlock(&fip->ctlr_mutex);
}
return 0;
}
@@ -1382,26 +1611,916 @@ u64 fcoe_wwn_from_mac(unsigned char mac[MAX_ADDR_LEN],
EXPORT_SYMBOL_GPL(fcoe_wwn_from_mac);
/**
+ * fcoe_ctlr_rport() - return the fcoe_rport for a given fc_rport_priv
+ * @rdata: libfc remote port
+ */
+static inline struct fcoe_rport *fcoe_ctlr_rport(struct fc_rport_priv *rdata)
+{
+ return (struct fcoe_rport *)(rdata + 1);
+}
+
+/**
+ * fcoe_ctlr_vn_send() - Send a FIP VN2VN Probe Request or Reply.
+ * @fip: The FCoE controller
+ * @sub: sub-opcode for probe request, reply, or advertisement.
+ * @dest: The destination Ethernet MAC address
+ * @min_len: minimum size of the Ethernet payload to be sent
+ */
+static void fcoe_ctlr_vn_send(struct fcoe_ctlr *fip,
+ enum fip_vn2vn_subcode sub,
+ const u8 *dest, size_t min_len)
+{
+ struct sk_buff *skb;
+ struct fip_frame {
+ struct ethhdr eth;
+ struct fip_header fip;
+ struct fip_mac_desc mac;
+ struct fip_wwn_desc wwnn;
+ struct fip_vn_desc vn;
+ } __attribute__((packed)) *frame;
+ struct fip_fc4_feat *ff;
+ struct fip_size_desc *size;
+ u32 fcp_feat;
+ size_t len;
+ size_t dlen;
+
+ len = sizeof(*frame);
+ dlen = 0;
+ if (sub == FIP_SC_VN_CLAIM_NOTIFY || sub == FIP_SC_VN_CLAIM_REP) {
+ dlen = sizeof(struct fip_fc4_feat) +
+ sizeof(struct fip_size_desc);
+ len += dlen;
+ }
+ dlen += sizeof(frame->mac) + sizeof(frame->wwnn) + sizeof(frame->vn);
+ len = max(len, min_len + sizeof(struct ethhdr));
+
+ skb = dev_alloc_skb(len);
+ if (!skb)
+ return;
+
+ frame = (struct fip_frame *)skb->data;
+ memset(frame, 0, len);
+ memcpy(frame->eth.h_dest, dest, ETH_ALEN);
+ memcpy(frame->eth.h_source, fip->ctl_src_addr, ETH_ALEN);
+ frame->eth.h_proto = htons(ETH_P_FIP);
+
+ frame->fip.fip_ver = FIP_VER_ENCAPS(FIP_VER);
+ frame->fip.fip_op = htons(FIP_OP_VN2VN);
+ frame->fip.fip_subcode = sub;
+ frame->fip.fip_dl_len = htons(dlen / FIP_BPW);
+
+ frame->mac.fd_desc.fip_dtype = FIP_DT_MAC;
+ frame->mac.fd_desc.fip_dlen = sizeof(frame->mac) / FIP_BPW;
+ memcpy(frame->mac.fd_mac, fip->ctl_src_addr, ETH_ALEN);
+
+ frame->wwnn.fd_desc.fip_dtype = FIP_DT_NAME;
+ frame->wwnn.fd_desc.fip_dlen = sizeof(frame->wwnn) / FIP_BPW;
+ put_unaligned_be64(fip->lp->wwnn, &frame->wwnn.fd_wwn);
+
+ frame->vn.fd_desc.fip_dtype = FIP_DT_VN_ID;
+ frame->vn.fd_desc.fip_dlen = sizeof(frame->vn) / FIP_BPW;
+ hton24(frame->vn.fd_mac, FIP_VN_FC_MAP);
+ hton24(frame->vn.fd_mac + 3, fip->port_id);
+ hton24(frame->vn.fd_fc_id, fip->port_id);
+ put_unaligned_be64(fip->lp->wwpn, &frame->vn.fd_wwpn);
+
+ /*
+ * For claims, add FC-4 features.
+ * TBD: Add interface to get fc-4 types and features from libfc.
+ */
+ if (sub == FIP_SC_VN_CLAIM_NOTIFY || sub == FIP_SC_VN_CLAIM_REP) {
+ ff = (struct fip_fc4_feat *)(frame + 1);
+ ff->fd_desc.fip_dtype = FIP_DT_FC4F;
+ ff->fd_desc.fip_dlen = sizeof(*ff) / FIP_BPW;
+ ff->fd_fts = fip->lp->fcts;
+
+ fcp_feat = 0;
+ if (fip->lp->service_params & FCP_SPPF_INIT_FCN)
+ fcp_feat |= FCP_FEAT_INIT;
+ if (fip->lp->service_params & FCP_SPPF_TARG_FCN)
+ fcp_feat |= FCP_FEAT_TARG;
+ fcp_feat <<= (FC_TYPE_FCP * 4) % 32;
+ ff->fd_ff.fd_feat[FC_TYPE_FCP * 4 / 32] = htonl(fcp_feat);
+
+ size = (struct fip_size_desc *)(ff + 1);
+ size->fd_desc.fip_dtype = FIP_DT_FCOE_SIZE;
+ size->fd_desc.fip_dlen = sizeof(*size) / FIP_BPW;
+ size->fd_size = htons(fcoe_ctlr_fcoe_size(fip));
+ }
+
+ skb_put(skb, len);
+ skb->protocol = htons(ETH_P_FIP);
+ skb_reset_mac_header(skb);
+ skb_reset_network_header(skb);
+
+ fip->send(fip, skb);
+}
+
+/**
+ * fcoe_ctlr_vn_rport_callback - Event handler for rport events.
+ * @lport: The lport which is receiving the event
+ * @rdata: remote port private data
+ * @event: The event that occured
+ *
+ * Locking Note: The rport lock must not be held when calling this function.
+ */
+static void fcoe_ctlr_vn_rport_callback(struct fc_lport *lport,
+ struct fc_rport_priv *rdata,
+ enum fc_rport_event event)
+{
+ struct fcoe_ctlr *fip = lport->disc.priv;
+ struct fcoe_rport *frport = fcoe_ctlr_rport(rdata);
+
+ LIBFCOE_FIP_DBG(fip, "vn_rport_callback %x event %d\n",
+ rdata->ids.port_id, event);
+
+ mutex_lock(&fip->ctlr_mutex);
+ switch (event) {
+ case RPORT_EV_READY:
+ frport->login_count = 0;
+ break;
+ case RPORT_EV_LOGO:
+ case RPORT_EV_FAILED:
+ case RPORT_EV_STOP:
+ frport->login_count++;
+ if (frport->login_count > FCOE_CTLR_VN2VN_LOGIN_LIMIT) {
+ LIBFCOE_FIP_DBG(fip,
+ "rport FLOGI limited port_id %6.6x\n",
+ rdata->ids.port_id);
+ lport->tt.rport_logoff(rdata);
+ }
+ break;
+ default:
+ break;
+ }
+ mutex_unlock(&fip->ctlr_mutex);
+}
+
+static struct fc_rport_operations fcoe_ctlr_vn_rport_ops = {
+ .event_callback = fcoe_ctlr_vn_rport_callback,
+};
+
+/**
+ * fcoe_ctlr_disc_stop_locked() - stop discovery in VN2VN mode
+ * @fip: The FCoE controller
+ *
+ * Called with ctlr_mutex held.
+ */
+static void fcoe_ctlr_disc_stop_locked(struct fc_lport *lport)
+{
+ mutex_lock(&lport->disc.disc_mutex);
+ lport->disc.disc_callback = NULL;
+ mutex_unlock(&lport->disc.disc_mutex);
+}
+
+/**
+ * fcoe_ctlr_disc_stop() - stop discovery in VN2VN mode
+ * @fip: The FCoE controller
+ *
+ * Called through the local port template for discovery.
+ * Called without the ctlr_mutex held.
+ */
+static void fcoe_ctlr_disc_stop(struct fc_lport *lport)
+{
+ struct fcoe_ctlr *fip = lport->disc.priv;
+
+ mutex_lock(&fip->ctlr_mutex);
+ fcoe_ctlr_disc_stop_locked(lport);
+ mutex_unlock(&fip->ctlr_mutex);
+}
+
+/**
+ * fcoe_ctlr_disc_stop_final() - stop discovery for shutdown in VN2VN mode
+ * @fip: The FCoE controller
+ *
+ * Called through the local port template for discovery.
+ * Called without the ctlr_mutex held.
+ */
+static void fcoe_ctlr_disc_stop_final(struct fc_lport *lport)
+{
+ fcoe_ctlr_disc_stop(lport);
+ lport->tt.rport_flush_queue();
+ synchronize_rcu();
+}
+
+/**
+ * fcoe_ctlr_vn_restart() - VN2VN probe restart with new port_id
+ * @fip: The FCoE controller
+ *
+ * Called with fcoe_ctlr lock held.
+ */
+static void fcoe_ctlr_vn_restart(struct fcoe_ctlr *fip)
+{
+ unsigned long wait;
+ u32 port_id;
+
+ fcoe_ctlr_disc_stop_locked(fip->lp);
+
+ /*
+ * Get proposed port ID.
+ * If this is the first try after link up, use any previous port_id.
+ * If there was none, use the low bits of the port_name.
+ * On subsequent tries, get the next random one.
+ * Don't use reserved IDs, use another non-zero value, just as random.
+ */
+ port_id = fip->port_id;
+ if (fip->probe_tries)
+ port_id = prandom32(&fip->rnd_state) & 0xffff;
+ else if (!port_id)
+ port_id = fip->lp->wwpn & 0xffff;
+ if (!port_id || port_id == 0xffff)
+ port_id = 1;
+ fip->port_id = port_id;
+
+ if (fip->probe_tries < FIP_VN_RLIM_COUNT) {
+ fip->probe_tries++;
+ wait = random32() % FIP_VN_PROBE_WAIT;
+ } else
+ wait = FIP_VN_RLIM_INT;
+ mod_timer(&fip->timer, jiffies + msecs_to_jiffies(wait));
+ fcoe_ctlr_set_state(fip, FIP_ST_VNMP_START);
+}
+
+/**
+ * fcoe_ctlr_vn_start() - Start in VN2VN mode
+ * @fip: The FCoE controller
+ *
+ * Called with fcoe_ctlr lock held.
+ */
+static void fcoe_ctlr_vn_start(struct fcoe_ctlr *fip)
+{
+ fip->probe_tries = 0;
+ prandom32_seed(&fip->rnd_state, fip->lp->wwpn);
+ fcoe_ctlr_vn_restart(fip);
+}
+
+/**
+ * fcoe_ctlr_vn_parse - parse probe request or response
+ * @fip: The FCoE controller
+ * @skb: incoming packet
+ * @rdata: buffer for resulting parsed VN entry plus fcoe_rport
+ *
+ * Returns non-zero error number on error.
+ * Does not consume the packet.
+ */
+static int fcoe_ctlr_vn_parse(struct fcoe_ctlr *fip,
+ struct sk_buff *skb,
+ struct fc_rport_priv *rdata)
+{
+ struct fip_header *fiph;
+ struct fip_desc *desc = NULL;
+ struct fip_mac_desc *macd = NULL;
+ struct fip_wwn_desc *wwn = NULL;
+ struct fip_vn_desc *vn = NULL;
+ struct fip_size_desc *size = NULL;
+ struct fcoe_rport *frport;
+ size_t rlen;
+ size_t dlen;
+ u32 desc_mask = 0;
+ u32 dtype;
+ u8 sub;
+
+ memset(rdata, 0, sizeof(*rdata) + sizeof(*frport));
+ frport = fcoe_ctlr_rport(rdata);
+
+ fiph = (struct fip_header *)skb->data;
+ frport->flags = ntohs(fiph->fip_flags);
+
+ sub = fiph->fip_subcode;
+ switch (sub) {
+ case FIP_SC_VN_PROBE_REQ:
+ case FIP_SC_VN_PROBE_REP:
+ case FIP_SC_VN_BEACON:
+ desc_mask = BIT(FIP_DT_MAC) | BIT(FIP_DT_NAME) |
+ BIT(FIP_DT_VN_ID);
+ break;
+ case FIP_SC_VN_CLAIM_NOTIFY:
+ case FIP_SC_VN_CLAIM_REP:
+ desc_mask = BIT(FIP_DT_MAC) | BIT(FIP_DT_NAME) |
+ BIT(FIP_DT_VN_ID) | BIT(FIP_DT_FC4F) |
+ BIT(FIP_DT_FCOE_SIZE);
+ break;
+ default:
+ LIBFCOE_FIP_DBG(fip, "vn_parse unknown subcode %u\n", sub);
+ return -EINVAL;
+ }
+
+ rlen = ntohs(fiph->fip_dl_len) * 4;
+ if (rlen + sizeof(*fiph) > skb->len)
+ return -EINVAL;
+
+ desc = (struct fip_desc *)(fiph + 1);
+ while (rlen > 0) {
+ dlen = desc->fip_dlen * FIP_BPW;
+ if (dlen < sizeof(*desc) || dlen > rlen)
+ return -EINVAL;
+
+ dtype = desc->fip_dtype;
+ if (dtype < 32) {
+ if (!(desc_mask & BIT(dtype))) {
+ LIBFCOE_FIP_DBG(fip,
+ "unexpected or duplicated desc "
+ "desc type %u in "
+ "FIP VN2VN subtype %u\n",
+ dtype, sub);
+ return -EINVAL;
+ }
+ desc_mask &= ~BIT(dtype);
+ }
+
+ switch (dtype) {
+ case FIP_DT_MAC:
+ if (dlen != sizeof(struct fip_mac_desc))
+ goto len_err;
+ macd = (struct fip_mac_desc *)desc;
+ if (!is_valid_ether_addr(macd->fd_mac)) {
+ LIBFCOE_FIP_DBG(fip,
+ "Invalid MAC addr %pM in FIP VN2VN\n",
+ macd->fd_mac);
+ return -EINVAL;
+ }
+ memcpy(frport->enode_mac, macd->fd_mac, ETH_ALEN);
+ break;
+ case FIP_DT_NAME:
+ if (dlen != sizeof(struct fip_wwn_desc))
+ goto len_err;
+ wwn = (struct fip_wwn_desc *)desc;
+ rdata->ids.node_name = get_unaligned_be64(&wwn->fd_wwn);
+ break;
+ case FIP_DT_VN_ID:
+ if (dlen != sizeof(struct fip_vn_desc))
+ goto len_err;
+ vn = (struct fip_vn_desc *)desc;
+ memcpy(frport->vn_mac, vn->fd_mac, ETH_ALEN);
+ rdata->ids.port_id = ntoh24(vn->fd_fc_id);
+ rdata->ids.port_name = get_unaligned_be64(&vn->fd_wwpn);
+ break;
+ case FIP_DT_FC4F:
+ if (dlen != sizeof(struct fip_fc4_feat))
+ goto len_err;
+ break;
+ case FIP_DT_FCOE_SIZE:
+ if (dlen != sizeof(struct fip_size_desc))
+ goto len_err;
+ size = (struct fip_size_desc *)desc;
+ frport->fcoe_len = ntohs(size->fd_size);
+ break;
+ default:
+ LIBFCOE_FIP_DBG(fip, "unexpected descriptor type %x "
+ "in FIP probe\n", dtype);
+ /* standard says ignore unknown descriptors >= 128 */
+ if (dtype < FIP_DT_VENDOR_BASE)
+ return -EINVAL;
+ break;
+ }
+ desc = (struct fip_desc *)((char *)desc + dlen);
+ rlen -= dlen;
+ }
+ return 0;
+
+len_err:
+ LIBFCOE_FIP_DBG(fip, "FIP length error in descriptor type %x len %zu\n",
+ dtype, dlen);
+ return -EINVAL;
+}
+
+/**
+ * fcoe_ctlr_vn_send_claim() - send multicast FIP VN2VN Claim Notification.
+ * @fip: The FCoE controller
+ *
+ * Called with ctlr_mutex held.
+ */
+static void fcoe_ctlr_vn_send_claim(struct fcoe_ctlr *fip)
+{
+ fcoe_ctlr_vn_send(fip, FIP_SC_VN_CLAIM_NOTIFY, fcoe_all_vn2vn, 0);
+ fip->sol_time = jiffies;
+}
+
+/**
+ * fcoe_ctlr_vn_probe_req() - handle incoming VN2VN probe request.
+ * @fip: The FCoE controller
+ * @rdata: parsed remote port with frport from the probe request
+ *
+ * Called with ctlr_mutex held.
+ */
+static void fcoe_ctlr_vn_probe_req(struct fcoe_ctlr *fip,
+ struct fc_rport_priv *rdata)
+{
+ struct fcoe_rport *frport = fcoe_ctlr_rport(rdata);
+
+ if (rdata->ids.port_id != fip->port_id)
+ return;
+
+ switch (fip->state) {
+ case FIP_ST_VNMP_CLAIM:
+ case FIP_ST_VNMP_UP:
+ fcoe_ctlr_vn_send(fip, FIP_SC_VN_PROBE_REP,
+ frport->enode_mac, 0);
+ break;
+ case FIP_ST_VNMP_PROBE1:
+ case FIP_ST_VNMP_PROBE2:
+ /*
+ * Decide whether to reply to the Probe.
+ * Our selected address is never a "recorded" one, so
+ * only reply if our WWPN is greater and the
+ * Probe's REC bit is not set.
+ * If we don't reply, we will change our address.
+ */
+ if (fip->lp->wwpn > rdata->ids.port_name &&
+ !(frport->flags & FIP_FL_REC_OR_P2P)) {
+ fcoe_ctlr_vn_send(fip, FIP_SC_VN_PROBE_REP,
+ frport->enode_mac, 0);
+ break;
+ }
+ /* fall through */
+ case FIP_ST_VNMP_START:
+ fcoe_ctlr_vn_restart(fip);
+ break;
+ default:
+ break;
+ }
+}
+
+/**
+ * fcoe_ctlr_vn_probe_reply() - handle incoming VN2VN probe reply.
+ * @fip: The FCoE controller
+ * @rdata: parsed remote port with frport from the probe request
+ *
+ * Called with ctlr_mutex held.
+ */
+static void fcoe_ctlr_vn_probe_reply(struct fcoe_ctlr *fip,
+ struct fc_rport_priv *rdata)
+{
+ if (rdata->ids.port_id != fip->port_id)
+ return;
+ switch (fip->state) {
+ case FIP_ST_VNMP_START:
+ case FIP_ST_VNMP_PROBE1:
+ case FIP_ST_VNMP_PROBE2:
+ case FIP_ST_VNMP_CLAIM:
+ fcoe_ctlr_vn_restart(fip);
+ break;
+ case FIP_ST_VNMP_UP:
+ fcoe_ctlr_vn_send_claim(fip);
+ break;
+ default:
+ break;
+ }
+}
+
+/**
+ * fcoe_ctlr_vn_add() - Add a VN2VN entry to the list, based on a claim reply.
+ * @fip: The FCoE controller
+ * @new: newly-parsed remote port with frport as a template for new rdata
+ *
+ * Called with ctlr_mutex held.
+ */
+static void fcoe_ctlr_vn_add(struct fcoe_ctlr *fip, struct fc_rport_priv *new)
+{
+ struct fc_lport *lport = fip->lp;
+ struct fc_rport_priv *rdata;
+ struct fc_rport_identifiers *ids;
+ struct fcoe_rport *frport;
+ u32 port_id;
+
+ port_id = new->ids.port_id;
+ if (port_id == fip->port_id)
+ return;
+
+ mutex_lock(&lport->disc.disc_mutex);
+ rdata = lport->tt.rport_create(lport, port_id);
+ if (!rdata) {
+ mutex_unlock(&lport->disc.disc_mutex);
+ return;
+ }
+
+ rdata->ops = &fcoe_ctlr_vn_rport_ops;
+ rdata->disc_id = lport->disc.disc_id;
+
+ ids = &rdata->ids;
+ if ((ids->port_name != -1 && ids->port_name != new->ids.port_name) ||
+ (ids->node_name != -1 && ids->node_name != new->ids.node_name))
+ lport->tt.rport_logoff(rdata);
+ ids->port_name = new->ids.port_name;
+ ids->node_name = new->ids.node_name;
+ mutex_unlock(&lport->disc.disc_mutex);
+
+ frport = fcoe_ctlr_rport(rdata);
+ LIBFCOE_FIP_DBG(fip, "vn_add rport %6.6x %s\n",
+ port_id, frport->fcoe_len ? "old" : "new");
+ *frport = *fcoe_ctlr_rport(new);
+ frport->time = 0;
+}
+
+/**
+ * fcoe_ctlr_vn_lookup() - Find VN remote port's MAC address
+ * @fip: The FCoE controller
+ * @port_id: The port_id of the remote VN_node
+ * @mac: buffer which will hold the VN_NODE destination MAC address, if found.
+ *
+ * Returns non-zero error if no remote port found.
+ */
+static int fcoe_ctlr_vn_lookup(struct fcoe_ctlr *fip, u32 port_id, u8 *mac)
+{
+ struct fc_lport *lport = fip->lp;
+ struct fc_rport_priv *rdata;
+ struct fcoe_rport *frport;
+ int ret = -1;
+
+ rcu_read_lock();
+ rdata = lport->tt.rport_lookup(lport, port_id);
+ if (rdata) {
+ frport = fcoe_ctlr_rport(rdata);
+ memcpy(mac, frport->enode_mac, ETH_ALEN);
+ ret = 0;
+ }
+ rcu_read_unlock();
+ return ret;
+}
+
+/**
+ * fcoe_ctlr_vn_claim_notify() - handle received FIP VN2VN Claim Notification
+ * @fip: The FCoE controller
+ * @new: newly-parsed remote port with frport as a template for new rdata
+ *
+ * Called with ctlr_mutex held.
+ */
+static void fcoe_ctlr_vn_claim_notify(struct fcoe_ctlr *fip,
+ struct fc_rport_priv *new)
+{
+ struct fcoe_rport *frport = fcoe_ctlr_rport(new);
+
+ if (frport->flags & FIP_FL_REC_OR_P2P) {
+ fcoe_ctlr_vn_send(fip, FIP_SC_VN_PROBE_REQ, fcoe_all_vn2vn, 0);
+ return;
+ }
+ switch (fip->state) {
+ case FIP_ST_VNMP_START:
+ case FIP_ST_VNMP_PROBE1:
+ case FIP_ST_VNMP_PROBE2:
+ if (new->ids.port_id == fip->port_id)
+ fcoe_ctlr_vn_restart(fip);
+ break;
+ case FIP_ST_VNMP_CLAIM:
+ case FIP_ST_VNMP_UP:
+ if (new->ids.port_id == fip->port_id) {
+ if (new->ids.port_name > fip->lp->wwpn) {
+ fcoe_ctlr_vn_restart(fip);
+ break;
+ }
+ fcoe_ctlr_vn_send_claim(fip);
+ break;
+ }
+ fcoe_ctlr_vn_send(fip, FIP_SC_VN_CLAIM_REP, frport->enode_mac,
+ min((u32)frport->fcoe_len,
+ fcoe_ctlr_fcoe_size(fip)));
+ fcoe_ctlr_vn_add(fip, new);
+ break;
+ default:
+ break;
+ }
+}
+
+/**
+ * fcoe_ctlr_vn_claim_resp() - handle received Claim Response
+ * @fip: The FCoE controller that received the frame
+ * @new: newly-parsed remote port with frport from the Claim Response
+ *
+ * Called with ctlr_mutex held.
+ */
+static void fcoe_ctlr_vn_claim_resp(struct fcoe_ctlr *fip,
+ struct fc_rport_priv *new)
+{
+ LIBFCOE_FIP_DBG(fip, "claim resp from from rport %x - state %s\n",
+ new->ids.port_id, fcoe_ctlr_state(fip->state));
+ if (fip->state == FIP_ST_VNMP_UP || fip->state == FIP_ST_VNMP_CLAIM)
+ fcoe_ctlr_vn_add(fip, new);
+}
+
+/**
+ * fcoe_ctlr_vn_beacon() - handle received beacon.
+ * @fip: The FCoE controller that received the frame
+ * @new: newly-parsed remote port with frport from the Beacon
+ *
+ * Called with ctlr_mutex held.
+ */
+static void fcoe_ctlr_vn_beacon(struct fcoe_ctlr *fip,
+ struct fc_rport_priv *new)
+{
+ struct fc_lport *lport = fip->lp;
+ struct fc_rport_priv *rdata;
+ struct fcoe_rport *frport;
+
+ frport = fcoe_ctlr_rport(new);
+ if (frport->flags & FIP_FL_REC_OR_P2P) {
+ fcoe_ctlr_vn_send(fip, FIP_SC_VN_PROBE_REQ, fcoe_all_vn2vn, 0);
+ return;
+ }
+ mutex_lock(&lport->disc.disc_mutex);
+ rdata = lport->tt.rport_lookup(lport, new->ids.port_id);
+ if (rdata)
+ kref_get(&rdata->kref);
+ mutex_unlock(&lport->disc.disc_mutex);
+ if (rdata) {
+ if (rdata->ids.node_name == new->ids.node_name &&
+ rdata->ids.port_name == new->ids.port_name) {
+ frport = fcoe_ctlr_rport(rdata);
+ if (!frport->time && fip->state == FIP_ST_VNMP_UP)
+ lport->tt.rport_login(rdata);
+ frport->time = jiffies;
+ }
+ kref_put(&rdata->kref, lport->tt.rport_destroy);
+ return;
+ }
+ if (fip->state != FIP_ST_VNMP_UP)
+ return;
+
+ /*
+ * Beacon from a new neighbor.
+ * Send a claim notify if one hasn't been sent recently.
+ * Don't add the neighbor yet.
+ */
+ LIBFCOE_FIP_DBG(fip, "beacon from new rport %x. sending claim notify\n",
+ new->ids.port_id);
+ if (time_after(jiffies,
+ fip->sol_time + msecs_to_jiffies(FIP_VN_ANN_WAIT)))
+ fcoe_ctlr_vn_send_claim(fip);
+}
+
+/**
+ * fcoe_ctlr_vn_age() - Check for VN_ports without recent beacons
+ * @fip: The FCoE controller
+ *
+ * Called with ctlr_mutex held.
+ * Called only in state FIP_ST_VNMP_UP.
+ * Returns the soonest time for next age-out or a time far in the future.
+ */
+static unsigned long fcoe_ctlr_vn_age(struct fcoe_ctlr *fip)
+{
+ struct fc_lport *lport = fip->lp;
+ struct fc_rport_priv *rdata;
+ struct fcoe_rport *frport;
+ unsigned long next_time;
+ unsigned long deadline;
+
+ next_time = jiffies + msecs_to_jiffies(FIP_VN_BEACON_INT * 10);
+ mutex_lock(&lport->disc.disc_mutex);
+ list_for_each_entry_rcu(rdata, &lport->disc.rports, peers) {
+ frport = fcoe_ctlr_rport(rdata);
+ if (!frport->time)
+ continue;
+ deadline = frport->time +
+ msecs_to_jiffies(FIP_VN_BEACON_INT * 25 / 10);
+ if (time_after_eq(jiffies, deadline)) {
+ frport->time = 0;
+ LIBFCOE_FIP_DBG(fip,
+ "port %16.16llx fc_id %6.6x beacon expired\n",
+ rdata->ids.port_name, rdata->ids.port_id);
+ lport->tt.rport_logoff(rdata);
+ } else if (time_before(deadline, next_time))
+ next_time = deadline;
+ }
+ mutex_unlock(&lport->disc.disc_mutex);
+ return next_time;
+}
+
+/**
+ * fcoe_ctlr_vn_recv() - Receive a FIP frame
+ * @fip: The FCoE controller that received the frame
+ * @skb: The received FIP frame
+ *
+ * Returns non-zero if the frame is dropped.
+ * Always consumes the frame.
+ */
+static int fcoe_ctlr_vn_recv(struct fcoe_ctlr *fip, struct sk_buff *skb)
+{
+ struct fip_header *fiph;
+ enum fip_vn2vn_subcode sub;
+ union {
+ struct fc_rport_priv rdata;
+ struct fcoe_rport frport;
+ } buf;
+ int rc;
+
+ fiph = (struct fip_header *)skb->data;
+ sub = fiph->fip_subcode;
+
+ rc = fcoe_ctlr_vn_parse(fip, skb, &buf.rdata);
+ if (rc) {
+ LIBFCOE_FIP_DBG(fip, "vn_recv vn_parse error %d\n", rc);
+ goto drop;
+ }
+
+ mutex_lock(&fip->ctlr_mutex);
+ switch (sub) {
+ case FIP_SC_VN_PROBE_REQ:
+ fcoe_ctlr_vn_probe_req(fip, &buf.rdata);
+ break;
+ case FIP_SC_VN_PROBE_REP:
+ fcoe_ctlr_vn_probe_reply(fip, &buf.rdata);
+ break;
+ case FIP_SC_VN_CLAIM_NOTIFY:
+ fcoe_ctlr_vn_claim_notify(fip, &buf.rdata);
+ break;
+ case FIP_SC_VN_CLAIM_REP:
+ fcoe_ctlr_vn_claim_resp(fip, &buf.rdata);
+ break;
+ case FIP_SC_VN_BEACON:
+ fcoe_ctlr_vn_beacon(fip, &buf.rdata);
+ break;
+ default:
+ LIBFCOE_FIP_DBG(fip, "vn_recv unknown subcode %d\n", sub);
+ rc = -1;
+ break;
+ }
+ mutex_unlock(&fip->ctlr_mutex);
+drop:
+ kfree_skb(skb);
+ return rc;
+}
+
+/**
+ * fcoe_ctlr_disc_recv - discovery receive handler for VN2VN mode.
+ * @lport: The local port
+ * @fp: The received frame
+ *
+ * This should never be called since we don't see RSCNs or other
+ * fabric-generated ELSes.
+ */
+static void fcoe_ctlr_disc_recv(struct fc_lport *lport, struct fc_frame *fp)
+{
+ struct fc_seq_els_data rjt_data;
+
+ rjt_data.reason = ELS_RJT_UNSUP;
+ rjt_data.explan = ELS_EXPL_NONE;
+ lport->tt.seq_els_rsp_send(fp, ELS_LS_RJT, &rjt_data);
+ fc_frame_free(fp);
+}
+
+/**
+ * fcoe_ctlr_disc_recv - start discovery for VN2VN mode.
+ * @fip: The FCoE controller
+ *
+ * This sets a flag indicating that remote ports should be created
+ * and started for the peers we discover. We use the disc_callback
+ * pointer as that flag. Peers already discovered are created here.
+ *
+ * The lport lock is held during this call. The callback must be done
+ * later, without holding either the lport or discovery locks.
+ * The fcoe_ctlr lock may also be held during this call.
+ */
+static void fcoe_ctlr_disc_start(void (*callback)(struct fc_lport *,
+ enum fc_disc_event),
+ struct fc_lport *lport)
+{
+ struct fc_disc *disc = &lport->disc;
+ struct fcoe_ctlr *fip = disc->priv;
+
+ mutex_lock(&disc->disc_mutex);
+ disc->disc_callback = callback;
+ disc->disc_id = (disc->disc_id + 2) | 1;
+ disc->pending = 1;
+ schedule_work(&fip->timer_work);
+ mutex_unlock(&disc->disc_mutex);
+}
+
+/**
+ * fcoe_ctlr_vn_disc() - report FIP VN_port discovery results after claim state.
+ * @fip: The FCoE controller
+ *
+ * Starts the FLOGI and PLOGI login process to each discovered rport for which
+ * we've received at least one beacon.
+ * Performs the discovery complete callback.
+ */
+static void fcoe_ctlr_vn_disc(struct fcoe_ctlr *fip)
+{
+ struct fc_lport *lport = fip->lp;
+ struct fc_disc *disc = &lport->disc;
+ struct fc_rport_priv *rdata;
+ struct fcoe_rport *frport;
+ void (*callback)(struct fc_lport *, enum fc_disc_event);
+
+ mutex_lock(&disc->disc_mutex);
+ callback = disc->pending ? disc->disc_callback : NULL;
+ disc->pending = 0;
+ list_for_each_entry_rcu(rdata, &disc->rports, peers) {
+ frport = fcoe_ctlr_rport(rdata);
+ if (frport->time)
+ lport->tt.rport_login(rdata);
+ }
+ mutex_unlock(&disc->disc_mutex);
+ if (callback)
+ callback(lport, DISC_EV_SUCCESS);
+}
+
+/**
+ * fcoe_ctlr_vn_timeout - timer work function for VN2VN mode.
+ * @fip: The FCoE controller
+ */
+static void fcoe_ctlr_vn_timeout(struct fcoe_ctlr *fip)
+{
+ unsigned long next_time;
+ u8 mac[ETH_ALEN];
+ u32 new_port_id = 0;
+
+ mutex_lock(&fip->ctlr_mutex);
+ switch (fip->state) {
+ case FIP_ST_VNMP_START:
+ fcoe_ctlr_set_state(fip, FIP_ST_VNMP_PROBE1);
+ fcoe_ctlr_vn_send(fip, FIP_SC_VN_PROBE_REQ, fcoe_all_vn2vn, 0);
+ next_time = jiffies + msecs_to_jiffies(FIP_VN_PROBE_WAIT);
+ break;
+ case FIP_ST_VNMP_PROBE1:
+ fcoe_ctlr_set_state(fip, FIP_ST_VNMP_PROBE2);
+ fcoe_ctlr_vn_send(fip, FIP_SC_VN_PROBE_REQ, fcoe_all_vn2vn, 0);
+ next_time = jiffies + msecs_to_jiffies(FIP_VN_ANN_WAIT);
+ break;
+ case FIP_ST_VNMP_PROBE2:
+ fcoe_ctlr_set_state(fip, FIP_ST_VNMP_CLAIM);
+ new_port_id = fip->port_id;
+ hton24(mac, FIP_VN_FC_MAP);
+ hton24(mac + 3, new_port_id);
+ fcoe_ctlr_map_dest(fip);
+ fip->update_mac(fip->lp, mac);
+ fcoe_ctlr_vn_send_claim(fip);
+ next_time = jiffies + msecs_to_jiffies(FIP_VN_ANN_WAIT);
+ break;
+ case FIP_ST_VNMP_CLAIM:
+ /*
+ * This may be invoked either by starting discovery so don't
+ * go to the next state unless it's been long enough.
+ */
+ next_time = fip->sol_time + msecs_to_jiffies(FIP_VN_ANN_WAIT);
+ if (time_after_eq(jiffies, next_time)) {
+ fcoe_ctlr_set_state(fip, FIP_ST_VNMP_UP);
+ fcoe_ctlr_vn_send(fip, FIP_SC_VN_BEACON,
+ fcoe_all_vn2vn, 0);
+ next_time = jiffies + msecs_to_jiffies(FIP_VN_ANN_WAIT);
+ fip->port_ka_time = next_time;
+ }
+ fcoe_ctlr_vn_disc(fip);
+ break;
+ case FIP_ST_VNMP_UP:
+ next_time = fcoe_ctlr_vn_age(fip);
+ if (time_after_eq(jiffies, fip->port_ka_time)) {
+ fcoe_ctlr_vn_send(fip, FIP_SC_VN_BEACON,
+ fcoe_all_vn2vn, 0);
+ fip->port_ka_time = jiffies +
+ msecs_to_jiffies(FIP_VN_BEACON_INT +
+ (random32() % FIP_VN_BEACON_FUZZ));
+ }
+ if (time_before(fip->port_ka_time, next_time))
+ next_time = fip->port_ka_time;
+ break;
+ case FIP_ST_LINK_WAIT:
+ goto unlock;
+ default:
+ WARN(1, "unexpected state %d", fip->state);
+ goto unlock;
+ }
+ mod_timer(&fip->timer, next_time);
+unlock:
+ mutex_unlock(&fip->ctlr_mutex);
+
+ /* If port ID is new, notify local port after dropping ctlr_mutex */
+ if (new_port_id)
+ fc_lport_set_local_id(fip->lp, new_port_id);
+}
+
+/**
* fcoe_libfc_config() - Sets up libfc related properties for local port
* @lp: The local port to configure libfc for
+ * @fip: The FCoE controller in use by the local port
* @tt: The libfc function template
+ * @init_fcp: If non-zero, the FCP portion of libfc should be initialized
*
* Returns : 0 for success
*/
-int fcoe_libfc_config(struct fc_lport *lport,
- struct libfc_function_template *tt)
+int fcoe_libfc_config(struct fc_lport *lport, struct fcoe_ctlr *fip,
+ const struct libfc_function_template *tt, int init_fcp)
{
/* Set the function pointers set by the LLDD */
memcpy(&lport->tt, tt, sizeof(*tt));
- if (fc_fcp_init(lport))
+ if (init_fcp && fc_fcp_init(lport))
return -ENOMEM;
fc_exch_init(lport);
fc_elsct_init(lport);
fc_lport_init(lport);
+ if (fip->mode == FIP_MODE_VN2VN)
+ lport->rport_priv_size = sizeof(struct fcoe_rport);
fc_rport_init(lport);
- fc_disc_init(lport);
-
+ if (fip->mode == FIP_MODE_VN2VN) {
+ lport->point_to_multipoint = 1;
+ lport->tt.disc_recv_req = fcoe_ctlr_disc_recv;
+ lport->tt.disc_start = fcoe_ctlr_disc_start;
+ lport->tt.disc_stop = fcoe_ctlr_disc_stop;
+ lport->tt.disc_stop_final = fcoe_ctlr_disc_stop_final;
+ mutex_init(&lport->disc.disc_mutex);
+ INIT_LIST_HEAD(&lport->disc.rports);
+ lport->disc.priv = fip;
+ } else {
+ fc_disc_init(lport);
+ }
return 0;
}
EXPORT_SYMBOL_GPL(fcoe_libfc_config);
-
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