aboutsummaryrefslogtreecommitdiffstatshomepage
path: root/drivers/scsi/fcoe/fcoe_ctlr.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/scsi/fcoe/fcoe_ctlr.c')
-rw-r--r--drivers/scsi/fcoe/fcoe_ctlr.c157
1 files changed, 128 insertions, 29 deletions
diff --git a/drivers/scsi/fcoe/fcoe_ctlr.c b/drivers/scsi/fcoe/fcoe_ctlr.c
index dcf36537a767..cea57e27e713 100644
--- a/drivers/scsi/fcoe/fcoe_ctlr.c
+++ b/drivers/scsi/fcoe/fcoe_ctlr.c
@@ -801,6 +801,8 @@ int fcoe_ctlr_els_send(struct fcoe_ctlr *fip, struct fc_lport *lport,
return -EINPROGRESS;
drop:
kfree_skb(skb);
+ LIBFCOE_FIP_DBG(fip, "drop els_send op %u d_id %x\n",
+ op, ntoh24(fh->fh_d_id));
return -EINVAL;
}
EXPORT_SYMBOL(fcoe_ctlr_els_send);
@@ -1316,7 +1318,7 @@ drop:
* The overall length has already been checked.
*/
static void fcoe_ctlr_recv_clr_vlink(struct fcoe_ctlr *fip,
- struct fip_header *fh)
+ struct sk_buff *skb)
{
struct fip_desc *desc;
struct fip_mac_desc *mp;
@@ -1331,14 +1333,18 @@ static void fcoe_ctlr_recv_clr_vlink(struct fcoe_ctlr *fip,
int num_vlink_desc;
int reset_phys_port = 0;
struct fip_vn_desc **vlink_desc_arr = NULL;
+ struct fip_header *fh = (struct fip_header *)skb->data;
+ struct ethhdr *eh = eth_hdr(skb);
LIBFCOE_FIP_DBG(fip, "Clear Virtual Link received\n");
- if (!fcf || !lport->port_id) {
+ if (!fcf) {
/*
* We are yet to select best FCF, but we got CVL in the
* meantime. reset the ctlr and let it rediscover the FCF
*/
+ LIBFCOE_FIP_DBG(fip, "Resetting fcoe_ctlr as FCF has not been "
+ "selected yet\n");
mutex_lock(&fip->ctlr_mutex);
fcoe_ctlr_reset(fip);
mutex_unlock(&fip->ctlr_mutex);
@@ -1346,6 +1352,31 @@ static void fcoe_ctlr_recv_clr_vlink(struct fcoe_ctlr *fip,
}
/*
+ * If we've selected an FCF check that the CVL is from there to avoid
+ * processing CVLs from an unexpected source. If it is from an
+ * unexpected source drop it on the floor.
+ */
+ if (!ether_addr_equal(eh->h_source, fcf->fcf_mac)) {
+ LIBFCOE_FIP_DBG(fip, "Dropping CVL due to source address "
+ "mismatch with FCF src=%pM\n", eh->h_source);
+ return;
+ }
+
+ /*
+ * If we haven't logged into the fabric but receive a CVL we should
+ * reset everything and go back to solicitation.
+ */
+ if (!lport->port_id) {
+ LIBFCOE_FIP_DBG(fip, "lport not logged in, resoliciting\n");
+ mutex_lock(&fip->ctlr_mutex);
+ fcoe_ctlr_reset(fip);
+ mutex_unlock(&fip->ctlr_mutex);
+ fc_lport_reset(fip->lp);
+ fcoe_ctlr_solicit(fip, NULL);
+ return;
+ }
+
+ /*
* mask of required descriptors. Validating each one clears its bit.
*/
desc_mask = BIT(FIP_DT_MAC) | BIT(FIP_DT_NAME);
@@ -1576,7 +1607,7 @@ static int fcoe_ctlr_recv_handler(struct fcoe_ctlr *fip, struct sk_buff *skb)
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)
- fcoe_ctlr_recv_clr_vlink(fip, fiph);
+ fcoe_ctlr_recv_clr_vlink(fip, skb);
kfree_skb(skb);
return 0;
drop:
@@ -2122,7 +2153,7 @@ static void fcoe_ctlr_vn_rport_callback(struct fc_lport *lport,
LIBFCOE_FIP_DBG(fip,
"rport FLOGI limited port_id %6.6x\n",
rdata->ids.port_id);
- lport->tt.rport_logoff(rdata);
+ fc_rport_logoff(rdata);
}
break;
default:
@@ -2145,9 +2176,15 @@ static void fcoe_ctlr_disc_stop_locked(struct fc_lport *lport)
{
struct fc_rport_priv *rdata;
+ rcu_read_lock();
+ list_for_each_entry_rcu(rdata, &lport->disc.rports, peers) {
+ if (kref_get_unless_zero(&rdata->kref)) {
+ fc_rport_logoff(rdata);
+ kref_put(&rdata->kref, fc_rport_destroy);
+ }
+ }
+ rcu_read_unlock();
mutex_lock(&lport->disc.disc_mutex);
- list_for_each_entry_rcu(rdata, &lport->disc.rports, peers)
- lport->tt.rport_logoff(rdata);
lport->disc.disc_callback = NULL;
mutex_unlock(&lport->disc.disc_mutex);
}
@@ -2178,7 +2215,7 @@ static void fcoe_ctlr_disc_stop(struct fc_lport *lport)
static void fcoe_ctlr_disc_stop_final(struct fc_lport *lport)
{
fcoe_ctlr_disc_stop(lport);
- lport->tt.rport_flush_queue();
+ fc_rport_flush_queue();
synchronize_rcu();
}
@@ -2393,6 +2430,8 @@ static void fcoe_ctlr_vn_probe_req(struct fcoe_ctlr *fip,
switch (fip->state) {
case FIP_ST_VNMP_CLAIM:
case FIP_ST_VNMP_UP:
+ LIBFCOE_FIP_DBG(fip, "vn_probe_req: send reply, state %x\n",
+ fip->state);
fcoe_ctlr_vn_send(fip, FIP_SC_VN_PROBE_REP,
frport->enode_mac, 0);
break;
@@ -2407,15 +2446,21 @@ static void fcoe_ctlr_vn_probe_req(struct fcoe_ctlr *fip,
*/
if (fip->lp->wwpn > rdata->ids.port_name &&
!(frport->flags & FIP_FL_REC_OR_P2P)) {
+ LIBFCOE_FIP_DBG(fip, "vn_probe_req: "
+ "port_id collision\n");
fcoe_ctlr_vn_send(fip, FIP_SC_VN_PROBE_REP,
frport->enode_mac, 0);
break;
}
/* fall through */
case FIP_ST_VNMP_START:
+ LIBFCOE_FIP_DBG(fip, "vn_probe_req: "
+ "restart VN2VN negotiation\n");
fcoe_ctlr_vn_restart(fip);
break;
default:
+ LIBFCOE_FIP_DBG(fip, "vn_probe_req: ignore state %x\n",
+ fip->state);
break;
}
}
@@ -2437,9 +2482,12 @@ static void fcoe_ctlr_vn_probe_reply(struct fcoe_ctlr *fip,
case FIP_ST_VNMP_PROBE1:
case FIP_ST_VNMP_PROBE2:
case FIP_ST_VNMP_CLAIM:
+ LIBFCOE_FIP_DBG(fip, "vn_probe_reply: restart state %x\n",
+ fip->state);
fcoe_ctlr_vn_restart(fip);
break;
case FIP_ST_VNMP_UP:
+ LIBFCOE_FIP_DBG(fip, "vn_probe_reply: send claim notify\n");
fcoe_ctlr_vn_send_claim(fip);
break;
default:
@@ -2467,26 +2515,33 @@ static void fcoe_ctlr_vn_add(struct fcoe_ctlr *fip, struct fc_rport_priv *new)
return;
mutex_lock(&lport->disc.disc_mutex);
- rdata = lport->tt.rport_create(lport, port_id);
+ rdata = fc_rport_create(lport, port_id);
if (!rdata) {
mutex_unlock(&lport->disc.disc_mutex);
return;
}
+ mutex_lock(&rdata->rp_mutex);
+ mutex_unlock(&lport->disc.disc_mutex);
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->node_name != -1 && ids->node_name != new->ids.node_name)) {
+ mutex_unlock(&rdata->rp_mutex);
+ LIBFCOE_FIP_DBG(fip, "vn_add rport logoff %6.6x\n", port_id);
+ fc_rport_logoff(rdata);
+ mutex_lock(&rdata->rp_mutex);
+ }
ids->port_name = new->ids.port_name;
ids->node_name = new->ids.node_name;
- mutex_unlock(&lport->disc.disc_mutex);
+ mutex_unlock(&rdata->rp_mutex);
frport = fcoe_ctlr_rport(rdata);
- LIBFCOE_FIP_DBG(fip, "vn_add rport %6.6x %s\n",
- port_id, frport->fcoe_len ? "old" : "new");
+ LIBFCOE_FIP_DBG(fip, "vn_add rport %6.6x %s state %d\n",
+ port_id, frport->fcoe_len ? "old" : "new",
+ rdata->rp_state);
*frport = *fcoe_ctlr_rport(new);
frport->time = 0;
}
@@ -2506,12 +2561,12 @@ static int fcoe_ctlr_vn_lookup(struct fcoe_ctlr *fip, u32 port_id, u8 *mac)
struct fcoe_rport *frport;
int ret = -1;
- rdata = lport->tt.rport_lookup(lport, port_id);
+ rdata = fc_rport_lookup(lport, port_id);
if (rdata) {
frport = fcoe_ctlr_rport(rdata);
memcpy(mac, frport->enode_mac, ETH_ALEN);
ret = 0;
- kref_put(&rdata->kref, lport->tt.rport_destroy);
+ kref_put(&rdata->kref, fc_rport_destroy);
}
return ret;
}
@@ -2529,6 +2584,7 @@ static void fcoe_ctlr_vn_claim_notify(struct fcoe_ctlr *fip,
struct fcoe_rport *frport = fcoe_ctlr_rport(new);
if (frport->flags & FIP_FL_REC_OR_P2P) {
+ LIBFCOE_FIP_DBG(fip, "send probe req for P2P/REC\n");
fcoe_ctlr_vn_send(fip, FIP_SC_VN_PROBE_REQ, fcoe_all_vn2vn, 0);
return;
}
@@ -2536,25 +2592,37 @@ static void fcoe_ctlr_vn_claim_notify(struct fcoe_ctlr *fip,
case FIP_ST_VNMP_START:
case FIP_ST_VNMP_PROBE1:
case FIP_ST_VNMP_PROBE2:
- if (new->ids.port_id == fip->port_id)
+ if (new->ids.port_id == fip->port_id) {
+ LIBFCOE_FIP_DBG(fip, "vn_claim_notify: "
+ "restart, state %d\n",
+ fip->state);
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) {
+ LIBFCOE_FIP_DBG(fip, "vn_claim_notify: "
+ "restart, port_id collision\n");
fcoe_ctlr_vn_restart(fip);
break;
}
+ LIBFCOE_FIP_DBG(fip, "vn_claim_notify: "
+ "send claim notify\n");
fcoe_ctlr_vn_send_claim(fip);
break;
}
+ LIBFCOE_FIP_DBG(fip, "vn_claim_notify: send reply to %x\n",
+ new->ids.port_id);
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:
+ LIBFCOE_FIP_DBG(fip, "vn_claim_notify: "
+ "ignoring claim from %x\n", new->ids.port_id);
break;
}
}
@@ -2591,19 +2659,26 @@ static void fcoe_ctlr_vn_beacon(struct fcoe_ctlr *fip,
frport = fcoe_ctlr_rport(new);
if (frport->flags & FIP_FL_REC_OR_P2P) {
+ LIBFCOE_FIP_DBG(fip, "p2p beacon while in vn2vn mode\n");
fcoe_ctlr_vn_send(fip, FIP_SC_VN_PROBE_REQ, fcoe_all_vn2vn, 0);
return;
}
- rdata = lport->tt.rport_lookup(lport, new->ids.port_id);
+ rdata = fc_rport_lookup(lport, new->ids.port_id);
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);
+ LIBFCOE_FIP_DBG(fip, "beacon from rport %x\n",
+ rdata->ids.port_id);
+ if (!frport->time && fip->state == FIP_ST_VNMP_UP) {
+ LIBFCOE_FIP_DBG(fip, "beacon expired "
+ "for rport %x\n",
+ rdata->ids.port_id);
+ fc_rport_login(rdata);
+ }
frport->time = jiffies;
}
- kref_put(&rdata->kref, lport->tt.rport_destroy);
+ kref_put(&rdata->kref, fc_rport_destroy);
return;
}
if (fip->state != FIP_ST_VNMP_UP)
@@ -2638,11 +2713,15 @@ static unsigned long fcoe_ctlr_vn_age(struct fcoe_ctlr *fip)
unsigned long deadline;
next_time = jiffies + msecs_to_jiffies(FIP_VN_BEACON_INT * 10);
- mutex_lock(&lport->disc.disc_mutex);
+ rcu_read_lock();
list_for_each_entry_rcu(rdata, &lport->disc.rports, peers) {
+ if (!kref_get_unless_zero(&rdata->kref))
+ continue;
frport = fcoe_ctlr_rport(rdata);
- if (!frport->time)
+ if (!frport->time) {
+ kref_put(&rdata->kref, fc_rport_destroy);
continue;
+ }
deadline = frport->time +
msecs_to_jiffies(FIP_VN_BEACON_INT * 25 / 10);
if (time_after_eq(jiffies, deadline)) {
@@ -2650,11 +2729,12 @@ static unsigned long fcoe_ctlr_vn_age(struct fcoe_ctlr *fip)
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);
+ fc_rport_logoff(rdata);
} else if (time_before(deadline, next_time))
next_time = deadline;
+ kref_put(&rdata->kref, fc_rport_destroy);
}
- mutex_unlock(&lport->disc.disc_mutex);
+ rcu_read_unlock();
return next_time;
}
@@ -2674,11 +2754,21 @@ static int fcoe_ctlr_vn_recv(struct fcoe_ctlr *fip, struct sk_buff *skb)
struct fc_rport_priv rdata;
struct fcoe_rport frport;
} buf;
- int rc;
+ int rc, vlan_id = 0;
fiph = (struct fip_header *)skb->data;
sub = fiph->fip_subcode;
+ if (fip->lp->vlan)
+ vlan_id = skb_vlan_tag_get_id(skb);
+
+ if (vlan_id && vlan_id != fip->lp->vlan) {
+ LIBFCOE_FIP_DBG(fip, "vn_recv drop frame sub %x vlan %d\n",
+ sub, vlan_id);
+ rc = -EAGAIN;
+ goto drop;
+ }
+
rc = fcoe_ctlr_vn_parse(fip, skb, &buf.rdata);
if (rc) {
LIBFCOE_FIP_DBG(fip, "vn_recv vn_parse error %d\n", rc);
@@ -2941,7 +3031,7 @@ static void fcoe_ctlr_disc_recv(struct fc_lport *lport, struct fc_frame *fp)
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_seq_els_rsp_send(fp, ELS_LS_RJT, &rjt_data);
fc_frame_free(fp);
}
@@ -2991,12 +3081,17 @@ static void fcoe_ctlr_vn_disc(struct fcoe_ctlr *fip)
mutex_lock(&disc->disc_mutex);
callback = disc->pending ? disc->disc_callback : NULL;
disc->pending = 0;
+ mutex_unlock(&disc->disc_mutex);
+ rcu_read_lock();
list_for_each_entry_rcu(rdata, &disc->rports, peers) {
+ if (!kref_get_unless_zero(&rdata->kref))
+ continue;
frport = fcoe_ctlr_rport(rdata);
if (frport->time)
- lport->tt.rport_login(rdata);
+ fc_rport_login(rdata);
+ kref_put(&rdata->kref, fc_rport_destroy);
}
- mutex_unlock(&disc->disc_mutex);
+ rcu_read_unlock();
if (callback)
callback(lport, DISC_EV_SUCCESS);
}
@@ -3015,11 +3110,13 @@ static void fcoe_ctlr_vn_timeout(struct fcoe_ctlr *fip)
switch (fip->state) {
case FIP_ST_VNMP_START:
fcoe_ctlr_set_state(fip, FIP_ST_VNMP_PROBE1);
+ LIBFCOE_FIP_DBG(fip, "vn_timeout: send 1st probe request\n");
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);
+ LIBFCOE_FIP_DBG(fip, "vn_timeout: send 2nd probe request\n");
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;
@@ -3030,6 +3127,7 @@ static void fcoe_ctlr_vn_timeout(struct fcoe_ctlr *fip)
hton24(mac + 3, new_port_id);
fcoe_ctlr_map_dest(fip);
fip->update_mac(fip->lp, mac);
+ LIBFCOE_FIP_DBG(fip, "vn_timeout: send claim notify\n");
fcoe_ctlr_vn_send_claim(fip);
next_time = jiffies + msecs_to_jiffies(FIP_VN_ANN_WAIT);
break;
@@ -3041,6 +3139,7 @@ static void fcoe_ctlr_vn_timeout(struct fcoe_ctlr *fip)
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);
+ LIBFCOE_FIP_DBG(fip, "vn_timeout: send vn2vn beacon\n");
fcoe_ctlr_vn_send(fip, FIP_SC_VN_BEACON,
fcoe_all_vn2vn, 0);
next_time = jiffies + msecs_to_jiffies(FIP_VN_ANN_WAIT);
@@ -3051,6 +3150,7 @@ static void fcoe_ctlr_vn_timeout(struct fcoe_ctlr *fip)
case FIP_ST_VNMP_UP:
next_time = fcoe_ctlr_vn_age(fip);
if (time_after_eq(jiffies, fip->port_ka_time)) {
+ LIBFCOE_FIP_DBG(fip, "vn_timeout: send vn2vn beacon\n");
fcoe_ctlr_vn_send(fip, FIP_SC_VN_BEACON,
fcoe_all_vn2vn, 0);
fip->port_ka_time = jiffies +
@@ -3135,7 +3235,6 @@ int fcoe_libfc_config(struct fc_lport *lport, struct fcoe_ctlr *fip,
fc_exch_init(lport);
fc_elsct_init(lport);
fc_lport_init(lport);
- fc_rport_init(lport);
fc_disc_init(lport);
fcoe_ctlr_mode_set(lport, fip, fip->mode);
return 0;
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.