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Merge branch 'cxgb4-next' 

Anish Bhatt says:

====================
cxgb4i: Add ipv6 support

   The following patchset add ipv6 support for the cxgb4i(iscsi) driver.

Patch 1 moves a define from the iw_cxgb4 to cxgb4 to prevent code duplication,
 as it is used by cxgb4i and iw_cxgb4 both.
Patch 2 exports symbols needed by cxgb4i for ipv6 support from cxgb4.
Patch 3 & 4 deal with actual ipv6 code in libcxgbi/cxgb4i.

Submitting to net-next as changes were needed in cxgb4/iw_cxgb4, and submitting
to scsi separately would break compilation, cc-ing scsi & rdma.

v2 : Cleanup macro that prints ip addresses by using %pIS in patch 3
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2014-07-17 16:06:09 -07:00
parent 92abf75033 759a0cc5a3
commit c104178dda
7 changed files with 564 additions and 65 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/infiniband/hw/cxgb4/t4fw_ri_api.h
View File

@ -849,6 +849,5 @@ enum { /* TCP congestion control algorithms */
#define G_CONG_CNTRL(x) (((x) >> S_CONG_CNTRL) & M_CONG_CNTRL)
#define CONG_CNTRL_VALID (1 << 18)
#define T5_OPT_2_VALID (1 << 31)
#endif /* _T4FW_RI_API_H_ */

10
drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
View File

@ -3445,8 +3445,8 @@ static int tid_init(struct tid_info *t)
return 0;
}
static int cxgb4_clip_get(const struct net_device *dev,
const struct in6_addr *lip)
int cxgb4_clip_get(const struct net_device *dev,
const struct in6_addr *lip)
{
struct adapter *adap;
struct fw_clip_cmd c;
@ -3460,9 +3460,10 @@ static int cxgb4_clip_get(const struct net_device *dev,
c.ip_lo = *(__be64 *)(lip->s6_addr + 8);
return t4_wr_mbox_meat(adap, adap->mbox, &c, sizeof(c), &c, false);
}
EXPORT_SYMBOL(cxgb4_clip_get);
static int cxgb4_clip_release(const struct net_device *dev,
const struct in6_addr *lip)
int cxgb4_clip_release(const struct net_device *dev,
const struct in6_addr *lip)
{
struct adapter *adap;
struct fw_clip_cmd c;
@ -3476,6 +3477,7 @@ static int cxgb4_clip_release(const struct net_device *dev,
c.ip_lo = *(__be64 *)(lip->s6_addr + 8);
return t4_wr_mbox_meat(adap, adap->mbox, &c, sizeof(c), &c, false);
}
EXPORT_SYMBOL(cxgb4_clip_release);
/**
* cxgb4_create_server - create an IP server

4
drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.h
View File

@ -172,6 +172,10 @@ int cxgb4_create_server_filter(const struct net_device *dev, unsigned int stid,
unsigned char port, unsigned char mask);
int cxgb4_remove_server_filter(const struct net_device *dev, unsigned int stid,
unsigned int queue, bool ipv6);
int cxgb4_clip_get(const struct net_device *dev, const struct in6_addr *lip);
int cxgb4_clip_release(const struct net_device *dev,
const struct in6_addr *lip);
static inline void set_wr_txq(struct sk_buff *skb, int prio, int queue)
{
skb_set_queue_mapping(skb, (queue << 1) | prio);

3
drivers/net/ethernet/chelsio/cxgb4/t4_msg.h
View File

@ -270,12 +270,15 @@ struct cpl_pass_accept_rpl {
#define RX_COALESCE_VALID(x) ((x) << 11)
#define RX_COALESCE(x) ((x) << 12)
#define PACE(x) ((x) << 16)
#define RX_FC_VALID ((1U) << 19)
#define RX_FC_DISABLE ((1U) << 20)
#define TX_QUEUE(x) ((x) << 23)
#define RX_CHANNEL(x) ((x) << 26)
#define CCTRL_ECN(x) ((x) << 27)
#define WND_SCALE_EN(x) ((x) << 28)
#define TSTAMPS_EN(x) ((x) << 29)
#define SACK_EN(x) ((x) << 30)
#define T5_OPT_2_VALID ((1U) << 31)
__be64 opt0;
};

353
drivers/scsi/cxgbi/cxgb4i/cxgb4i.c
View File

@ -19,6 +19,7 @@
#include <net/tcp.h>
#include <net/dst.h>
#include <linux/netdevice.h>
#include <net/addrconf.h>
#include "t4_regs.h"
#include "t4_msg.h"
@ -150,6 +151,7 @@ static struct scsi_transport_template *cxgb4i_stt;
* The section below implments CPLs that related to iscsi tcp connection
* open/close/abort and data send/receive.
*/
#define DIV_ROUND_UP(n, d) (((n) + (d) - 1) / (d))
#define RCV_BUFSIZ_MASK 0x3FFU
#define MAX_IMM_TX_PKT_LEN 128
@ -179,6 +181,7 @@ static void send_act_open_req(struct cxgbi_sock *csk, struct sk_buff *skb,
struct l2t_entry *e)
{
struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(csk->cdev);
int t4 = is_t4(lldi->adapter_type);
int wscale = cxgbi_sock_compute_wscale(csk->mss_idx);
unsigned long long opt0;
unsigned int opt2;
@ -248,6 +251,97 @@ static void send_act_open_req(struct cxgbi_sock *csk, struct sk_buff *skb,
}
set_wr_txq(skb, CPL_PRIORITY_SETUP, csk->port_id);
pr_info_ipaddr("t%d csk 0x%p,%u,0x%lx,%u, rss_qid %u.\n",
(&csk->saddr), (&csk->daddr), t4 ? 4 : 5, csk,
csk->state, csk->flags, csk->atid, csk->rss_qid);
cxgb4_l2t_send(csk->cdev->ports[csk->port_id], skb, csk->l2t);
}
static void send_act_open_req6(struct cxgbi_sock *csk, struct sk_buff *skb,
struct l2t_entry *e)
{
struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(csk->cdev);
int t4 = is_t4(lldi->adapter_type);
int wscale = cxgbi_sock_compute_wscale(csk->mss_idx);
unsigned long long opt0;
unsigned int opt2;
unsigned int qid_atid = ((unsigned int)csk->atid) |
(((unsigned int)csk->rss_qid) << 14);
opt0 = KEEP_ALIVE(1) |
WND_SCALE(wscale) |
MSS_IDX(csk->mss_idx) |
L2T_IDX(((struct l2t_entry *)csk->l2t)->idx) |
TX_CHAN(csk->tx_chan) |
SMAC_SEL(csk->smac_idx) |
ULP_MODE(ULP_MODE_ISCSI) |
RCV_BUFSIZ(cxgb4i_rcv_win >> 10);
opt2 = RX_CHANNEL(0) |
RSS_QUEUE_VALID |
RX_FC_DISABLE |
RSS_QUEUE(csk->rss_qid);
if (t4) {
struct cpl_act_open_req6 *req =
(struct cpl_act_open_req6 *)skb->head;
INIT_TP_WR(req, 0);
OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_ACT_OPEN_REQ6,
qid_atid));
req->local_port = csk->saddr6.sin6_port;
req->peer_port = csk->daddr6.sin6_port;
req->local_ip_hi = *(__be64 *)(csk->saddr6.sin6_addr.s6_addr);
req->local_ip_lo = *(__be64 *)(csk->saddr6.sin6_addr.s6_addr +
8);
req->peer_ip_hi = *(__be64 *)(csk->daddr6.sin6_addr.s6_addr);
req->peer_ip_lo = *(__be64 *)(csk->daddr6.sin6_addr.s6_addr +
8);
req->opt0 = cpu_to_be64(opt0);
opt2 |= RX_FC_VALID;
req->opt2 = cpu_to_be32(opt2);
req->params = cpu_to_be32(cxgb4_select_ntuple(
csk->cdev->ports[csk->port_id],
csk->l2t));
} else {
struct cpl_t5_act_open_req6 *req =
(struct cpl_t5_act_open_req6 *)skb->head;
INIT_TP_WR(req, 0);
OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_ACT_OPEN_REQ6,
qid_atid));
req->local_port = csk->saddr6.sin6_port;
req->peer_port = csk->daddr6.sin6_port;
req->local_ip_hi = *(__be64 *)(csk->saddr6.sin6_addr.s6_addr);
req->local_ip_lo = *(__be64 *)(csk->saddr6.sin6_addr.s6_addr +
8);
req->peer_ip_hi = *(__be64 *)(csk->daddr6.sin6_addr.s6_addr);
req->peer_ip_lo = *(__be64 *)(csk->daddr6.sin6_addr.s6_addr +
8);
req->opt0 = cpu_to_be64(opt0);
opt2 |= T5_OPT_2_VALID;
req->opt2 = cpu_to_be32(opt2);
req->params = cpu_to_be64(V_FILTER_TUPLE(cxgb4_select_ntuple(
csk->cdev->ports[csk->port_id],
csk->l2t)));
}
set_wr_txq(skb, CPL_PRIORITY_SETUP, csk->port_id);
pr_info("t%d csk 0x%p,%u,0x%lx,%u, [%pI6]:%u-[%pI6]:%u, rss_qid %u.\n",
t4 ? 4 : 5, csk, csk->state, csk->flags, csk->atid,
&csk->saddr6.sin6_addr, ntohs(csk->saddr.sin_port),
&csk->daddr6.sin6_addr, ntohs(csk->daddr.sin_port),
csk->rss_qid);
cxgb4_l2t_send(csk->cdev->ports[csk->port_id], skb, csk->l2t);
}
@ -586,9 +680,11 @@ static void do_act_establish(struct cxgbi_device *cdev, struct sk_buff *skb)
goto rel_skb;
}
log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK,
"csk 0x%p,%u,0x%lx, tid %u, atid %u, rseq %u.\n",
csk, csk->state, csk->flags, tid, atid, rcv_isn);
pr_info_ipaddr("atid 0x%x, tid 0x%x, csk 0x%p,%u,0x%lx, isn %u.\n",
(&csk->saddr), (&csk->daddr),
atid, tid, csk, csk->state, csk->flags, rcv_isn);
module_put(THIS_MODULE);
cxgbi_sock_get(csk);
csk->tid = tid;
@ -663,6 +759,9 @@ static void csk_act_open_retry_timer(unsigned long data)
struct sk_buff *skb;
struct cxgbi_sock *csk = (struct cxgbi_sock *)data;
struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(csk->cdev);
void (*send_act_open_func)(struct cxgbi_sock *, struct sk_buff *,
struct l2t_entry *);
int t4 = is_t4(lldi->adapter_type), size, size6;
log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK,
"csk 0x%p,%u,0x%lx,%u.\n",
@ -670,20 +769,35 @@ static void csk_act_open_retry_timer(unsigned long data)
cxgbi_sock_get(csk);
spin_lock_bh(&csk->lock);
skb = alloc_wr(is_t4(lldi->adapter_type) ?
sizeof(struct cpl_act_open_req) :
sizeof(struct cpl_t5_act_open_req),
0, GFP_ATOMIC);
if (t4) {
size = sizeof(struct cpl_act_open_req);
size6 = sizeof(struct cpl_act_open_req6);
} else {
size = sizeof(struct cpl_t5_act_open_req);
size6 = sizeof(struct cpl_t5_act_open_req6);
}
if (csk->csk_family == AF_INET) {
send_act_open_func = send_act_open_req;
skb = alloc_wr(size, 0, GFP_ATOMIC);
} else {
send_act_open_func = send_act_open_req6;
skb = alloc_wr(size6, 0, GFP_ATOMIC);
}
if (!skb)
cxgbi_sock_fail_act_open(csk, -ENOMEM);
else {
skb->sk = (struct sock *)csk;
t4_set_arp_err_handler(skb, csk,
cxgbi_sock_act_open_req_arp_failure);
send_act_open_req(csk, skb, csk->l2t);
cxgbi_sock_act_open_req_arp_failure);
send_act_open_func(csk, skb, csk->l2t);
}
spin_unlock_bh(&csk->lock);
cxgbi_sock_put(csk);
}
static void do_act_open_rpl(struct cxgbi_device *cdev, struct sk_buff *skb)
@ -703,10 +817,9 @@ static void do_act_open_rpl(struct cxgbi_device *cdev, struct sk_buff *skb)
goto rel_skb;
}
pr_info("%pI4:%u-%pI4:%u, atid %u,%u, status %u, csk 0x%p,%u,0x%lx.\n",
&csk->saddr.sin_addr.s_addr, ntohs(csk->saddr.sin_port),
&csk->daddr.sin_addr.s_addr, ntohs(csk->daddr.sin_port),
atid, tid, status, csk, csk->state, csk->flags);
pr_info_ipaddr("tid %u/%u, status %u.\n"
"csk 0x%p,%u,0x%lx. ", (&csk->saddr), (&csk->daddr),
atid, tid, status, csk, csk->state, csk->flags);
if (status == CPL_ERR_RTX_NEG_ADVICE)
goto rel_skb;
@ -746,9 +859,9 @@ static void do_peer_close(struct cxgbi_device *cdev, struct sk_buff *skb)
pr_err("can't find connection for tid %u.\n", tid);
goto rel_skb;
}
log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK,
"csk 0x%p,%u,0x%lx,%u.\n",
csk, csk->state, csk->flags, csk->tid);
pr_info_ipaddr("csk 0x%p,%u,0x%lx,%u.\n",
(&csk->saddr), (&csk->daddr),
csk, csk->state, csk->flags, csk->tid);
cxgbi_sock_rcv_peer_close(csk);
rel_skb:
__kfree_skb(skb);
@ -767,9 +880,9 @@ static void do_close_con_rpl(struct cxgbi_device *cdev, struct sk_buff *skb)
pr_err("can't find connection for tid %u.\n", tid);
goto rel_skb;
}
log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK,
"csk 0x%p,%u,0x%lx,%u.\n",
csk, csk->state, csk->flags, csk->tid);
pr_info_ipaddr("csk 0x%p,%u,0x%lx,%u.\n",
(&csk->saddr), (&csk->daddr),
csk, csk->state, csk->flags, csk->tid);
cxgbi_sock_rcv_close_conn_rpl(csk, ntohl(rpl->snd_nxt));
rel_skb:
__kfree_skb(skb);
@ -808,9 +921,9 @@ static void do_abort_req_rss(struct cxgbi_device *cdev, struct sk_buff *skb)
goto rel_skb;
}
log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK,
"csk 0x%p,%u,0x%lx, tid %u, status 0x%x.\n",
csk, csk->state, csk->flags, csk->tid, req->status);
pr_info_ipaddr("csk 0x%p,%u,0x%lx,%u, status %u.\n",
(&csk->saddr), (&csk->daddr),
csk, csk->state, csk->flags, csk->tid, req->status);
if (req->status == CPL_ERR_RTX_NEG_ADVICE ||
req->status == CPL_ERR_PERSIST_NEG_ADVICE)
@ -851,10 +964,10 @@ static void do_abort_rpl_rss(struct cxgbi_device *cdev, struct sk_buff *skb)
if (!csk)
goto rel_skb;
log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK,
"status 0x%x, csk 0x%p, s %u, 0x%lx.\n",
rpl->status, csk, csk ? csk->state : 0,
csk ? csk->flags : 0UL);
if (csk)
pr_info_ipaddr("csk 0x%p,%u,0x%lx,%u, status %u.\n",
(&csk->saddr), (&csk->daddr), csk,
csk->state, csk->flags, csk->tid, rpl->status);
if (rpl->status == CPL_ERR_ABORT_FAILED)
goto rel_skb;
@ -1163,15 +1276,29 @@ static int init_act_open(struct cxgbi_sock *csk)
struct cxgbi_device *cdev = csk->cdev;
struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev);
struct net_device *ndev = cdev->ports[csk->port_id];
struct port_info *pi = netdev_priv(ndev);
struct sk_buff *skb = NULL;
struct neighbour *n;
struct neighbour *n = NULL;
void *daddr;
unsigned int step;
unsigned int size, size6;
int t4 = is_t4(lldi->adapter_type);
log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK,
"csk 0x%p,%u,0x%lx,%u.\n",
csk, csk->state, csk->flags, csk->tid);
if (csk->csk_family == AF_INET)
daddr = &csk->daddr.sin_addr.s_addr;
else
daddr = &csk->daddr6.sin6_addr;
n = dst_neigh_lookup(csk->dst, daddr);
if (!n) {
pr_err("%s, can't get neighbour of csk->dst.\n", ndev->name);
goto rel_resource;
}
csk->atid = cxgb4_alloc_atid(lldi->tids, csk);
if (csk->atid < 0) {
pr_err("%s, NO atid available.\n", ndev->name);
@ -1192,10 +1319,19 @@ static int init_act_open(struct cxgbi_sock *csk)
}
cxgbi_sock_get(csk);
skb = alloc_wr(is_t4(lldi->adapter_type) ?
sizeof(struct cpl_act_open_req) :
sizeof(struct cpl_t5_act_open_req),
0, GFP_ATOMIC);
if (t4) {
size = sizeof(struct cpl_act_open_req);
size6 = sizeof(struct cpl_act_open_req6);
} else {
size = sizeof(struct cpl_t5_act_open_req);
size6 = sizeof(struct cpl_t5_act_open_req6);
}
if (csk->csk_family == AF_INET)
skb = alloc_wr(size, 0, GFP_NOIO);
else
skb = alloc_wr(size6, 0, GFP_NOIO);
if (!skb)
goto rel_resource;
skb->sk = (struct sock *)csk;
@ -1211,19 +1347,27 @@ static int init_act_open(struct cxgbi_sock *csk)
csk->txq_idx = cxgb4_port_idx(ndev) * step;
step = lldi->nrxq / lldi->nchan;
csk->rss_qid = lldi->rxq_ids[cxgb4_port_idx(ndev) * step];
csk->wr_max_cred = csk->wr_cred = lldi->wr_cred;
csk->wr_cred = lldi->wr_cred -
DIV_ROUND_UP(sizeof(struct cpl_abort_req), 16);
csk->wr_max_cred = csk->wr_cred;
csk->wr_una_cred = 0;
cxgbi_sock_reset_wr_list(csk);
csk->err = 0;
log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK,
"csk 0x%p,p%d,%s, %u,%u,%u, mss %u,%u, smac %u.\n",
csk, pi->port_id, ndev->name, csk->tx_chan,
csk->txq_idx, csk->rss_qid, csk->mtu, csk->mss_idx,
csk->smac_idx);
pr_info_ipaddr("csk 0x%p,%u,0x%lx,%u,%u,%u, mtu %u,%u, smac %u.\n",
(&csk->saddr), (&csk->daddr), csk, csk->state,
csk->flags, csk->tx_chan, csk->txq_idx, csk->rss_qid,
csk->mtu, csk->mss_idx, csk->smac_idx);
/* must wait for either a act_open_rpl or act_open_establish */
try_module_get(THIS_MODULE);
cxgbi_sock_set_state(csk, CTP_ACTIVE_OPEN);
send_act_open_req(csk, skb, csk->l2t);
if (csk->csk_family == AF_INET)
send_act_open_req(csk, skb, csk->l2t);
else
send_act_open_req6(csk, skb, csk->l2t);
neigh_release(n);
return 0;
rel_resource:
@ -1487,6 +1631,131 @@ static int cxgb4i_ddp_init(struct cxgbi_device *cdev)
return 0;
}
static int cxgbi_inet6addr_handler(struct notifier_block *this,
unsigned long event, void *data)
{
struct inet6_ifaddr *ifa = data;
struct net_device *event_dev = ifa->idev->dev;
struct cxgbi_device *cdev;
int ret = NOTIFY_DONE;
rcu_read_lock();
if (event_dev->priv_flags & IFF_802_1Q_VLAN)
event_dev = vlan_dev_real_dev(event_dev);
cdev = cxgbi_device_find_by_netdev(event_dev, NULL);
if (!cdev) {
rcu_read_unlock();
return ret;
}
switch (event) {
case NETDEV_UP:
ret = cxgb4_clip_get(event_dev,
(const struct in6_addr *)
((ifa)->addr.s6_addr));
if (ret < 0) {
rcu_read_unlock();
return ret;
}
ret = NOTIFY_OK;
break;
case NETDEV_DOWN:
cxgb4_clip_release(event_dev,
(const struct in6_addr *)
((ifa)->addr.s6_addr));
ret = NOTIFY_OK;
break;
default:
break;
}
rcu_read_unlock();
return ret;
}
static struct notifier_block cxgbi_inet6addr_notifier = {
.notifier_call = cxgbi_inet6addr_handler
};
/* Retrieve IPv6 addresses from a root device (bond, vlan) associated with
* a physical device.
* The physical device reference is needed to send the actual CLIP command.
*/
static int update_dev_clip(struct net_device *root_dev, struct net_device *dev)
{
struct inet6_dev *idev = NULL;
struct inet6_ifaddr *ifa;
int ret = 0;
idev = __in6_dev_get(root_dev);
if (!idev)
return ret;
read_lock_bh(&idev->lock);
list_for_each_entry(ifa, &idev->addr_list, if_list) {
pr_info("updating the clip for addr %pI6\n",
ifa->addr.s6_addr);
ret = cxgb4_clip_get(dev, (const struct in6_addr *)
ifa->addr.s6_addr);
if (ret < 0)
break;
}
read_unlock_bh(&idev->lock);
return ret;
}
static int update_root_dev_clip(struct net_device *dev)
{
struct net_device *root_dev = NULL;
int i, ret = 0;
/* First populate the real net device's IPv6 address */
ret = update_dev_clip(dev, dev);
if (ret)
return ret;
/* Parse all bond and vlan devices layered on top of the physical dev */
root_dev = netdev_master_upper_dev_get(dev);
if (root_dev) {
ret = update_dev_clip(root_dev, dev);
if (ret)
return ret;
}
for (i = 0; i < VLAN_N_VID; i++) {
root_dev = __vlan_find_dev_deep_rcu(dev, htons(ETH_P_8021Q), i);
if (!root_dev)
continue;
ret = update_dev_clip(root_dev, dev);
if (ret)
break;
}
return ret;
}
static void cxgbi_update_clip(struct cxgbi_device *cdev)
{
int i;
rcu_read_lock();
for (i = 0; i < cdev->nports; i++) {
struct net_device *dev = cdev->ports[i];
int ret = 0;
if (dev)
ret = update_root_dev_clip(dev);
if (ret < 0)
break;
}
rcu_read_unlock();
}
static void *t4_uld_add(const struct cxgb4_lld_info *lldi)
{
struct cxgbi_device *cdev;
@ -1605,6 +1874,7 @@ static int t4_uld_state_change(void *handle, enum cxgb4_state state)
switch (state) {
case CXGB4_STATE_UP:
pr_info("cdev 0x%p, UP.\n", cdev);
cxgbi_update_clip(cdev);
/* re-initialize */
break;
case CXGB4_STATE_START_RECOVERY:
@ -1635,11 +1905,16 @@ static int __init cxgb4i_init_module(void)
if (rc < 0)
return rc;
cxgb4_register_uld(CXGB4_ULD_ISCSI, &cxgb4i_uld_info);
register_inet6addr_notifier(&cxgbi_inet6addr_notifier);
return 0;
}
static void __exit cxgb4i_exit_module(void)
{
unregister_inet6addr_notifier(&cxgbi_inet6addr_notifier);
cxgb4_unregister_uld(CXGB4_ULD_ISCSI);
cxgbi_device_unregister_all(CXGBI_FLAG_DEV_T4);
cxgbi_iscsi_cleanup(&cxgb4i_iscsi_transport, &cxgb4i_stt);

237
drivers/scsi/cxgbi/libcxgbi.c
View File

@ -24,6 +24,10 @@
#include <linux/inet.h>
#include <net/dst.h>
#include <net/route.h>
#include <net/ipv6.h>
#include <net/ip6_route.h>
#include <net/addrconf.h>
#include <linux/inetdevice.h> /* ip_dev_find */
#include <linux/module.h>
#include <net/tcp.h>
@ -193,8 +197,8 @@ struct cxgbi_device *cxgbi_device_find_by_lldev(void *lldev)
}
EXPORT_SYMBOL_GPL(cxgbi_device_find_by_lldev);
static struct cxgbi_device *cxgbi_device_find_by_netdev(struct net_device *ndev,
int *port)
struct cxgbi_device *cxgbi_device_find_by_netdev(struct net_device *ndev,
int *port)
{
struct net_device *vdev = NULL;
struct cxgbi_device *cdev, *tmp;
@ -224,6 +228,40 @@ static struct cxgbi_device *cxgbi_device_find_by_netdev(struct net_device *ndev,
"ndev 0x%p, %s, NO match found.\n", ndev, ndev->name);
return NULL;
}
EXPORT_SYMBOL_GPL(cxgbi_device_find_by_netdev);
static struct cxgbi_device *cxgbi_device_find_by_mac(struct net_device *ndev,
int *port)
{
struct net_device *vdev = NULL;
struct cxgbi_device *cdev, *tmp;
int i;
if (ndev->priv_flags & IFF_802_1Q_VLAN) {
vdev = ndev;
ndev = vlan_dev_real_dev(ndev);
pr_info("vlan dev %s -> %s.\n", vdev->name, ndev->name);
}
mutex_lock(&cdev_mutex);
list_for_each_entry_safe(cdev, tmp, &cdev_list, list_head) {
for (i = 0; i < cdev->nports; i++) {
if (!memcmp(ndev->dev_addr, cdev->ports[i]->dev_addr,
MAX_ADDR_LEN)) {
cdev->hbas[i]->vdev = vdev;
mutex_unlock(&cdev_mutex);
if (port)
*port = i;
return cdev;
}
}
}
mutex_unlock(&cdev_mutex);
log_debug(1 << CXGBI_DBG_DEV,
"ndev 0x%p, %s, NO match mac found.\n",
ndev, ndev->name);
return NULL;
}
void cxgbi_hbas_remove(struct cxgbi_device *cdev)
{
@ -320,6 +358,7 @@ static int sock_get_port(struct cxgbi_sock *csk)
struct cxgbi_ports_map *pmap = &cdev->pmap;
unsigned int start;
int idx;
__be16 *port;
if (!pmap->max_connect) {
pr_err("cdev 0x%p, p#%u %s, NO port map.\n",
@ -327,9 +366,14 @@ static int sock_get_port(struct cxgbi_sock *csk)
return -EADDRNOTAVAIL;
}
if (csk->saddr.sin_port) {
if (csk->csk_family == AF_INET)
port = &csk->saddr.sin_port;
else /* ipv6 */
port = &csk->saddr6.sin6_port;
if (*port) {
pr_err("source port NON-ZERO %u.\n",
ntohs(csk->saddr.sin_port));
ntohs(*port));
return -EADDRINUSE;
}
@ -347,8 +391,7 @@ static int sock_get_port(struct cxgbi_sock *csk)
idx = 0;
if (!pmap->port_csk[idx]) {
pmap->used++;
csk->saddr.sin_port =
htons(pmap->sport_base + idx);
*port = htons(pmap->sport_base + idx);
pmap->next = idx;
pmap->port_csk[idx] = csk;
spin_unlock_bh(&pmap->lock);
@ -374,16 +417,22 @@ static void sock_put_port(struct cxgbi_sock *csk)
{
struct cxgbi_device *cdev = csk->cdev;
struct cxgbi_ports_map *pmap = &cdev->pmap;
__be16 *port;
if (csk->saddr.sin_port) {
int idx = ntohs(csk->saddr.sin_port) - pmap->sport_base;
if (csk->csk_family == AF_INET)
port = &csk->saddr.sin_port;
else /* ipv6 */
port = &csk->saddr6.sin6_port;
csk->saddr.sin_port = 0;
if (*port) {
int idx = ntohs(*port) - pmap->sport_base;
*port = 0;
if (idx < 0 || idx >= pmap->max_connect) {
pr_err("cdev 0x%p, p#%u %s, port %u OOR.\n",
cdev, csk->port_id,
cdev->ports[csk->port_id]->name,
ntohs(csk->saddr.sin_port));
ntohs(*port));
return;
}
@ -479,17 +528,11 @@ static struct cxgbi_sock *cxgbi_check_route(struct sockaddr *dst_addr)
int port = 0xFFFF;
int err = 0;
if (daddr->sin_family != AF_INET) {
pr_info("address family 0x%x NOT supported.\n",
daddr->sin_family);
err = -EAFNOSUPPORT;
goto err_out;
}
rt = find_route_ipv4(&fl4, 0, daddr->sin_addr.s_addr, 0, daddr->sin_port, 0);
if (!rt) {
pr_info("no route to ipv4 0x%x, port %u.\n",
daddr->sin_addr.s_addr, daddr->sin_port);
be32_to_cpu(daddr->sin_addr.s_addr),
be16_to_cpu(daddr->sin_port));
err = -ENETUNREACH;
goto err_out;
}
@ -537,9 +580,12 @@ static struct cxgbi_sock *cxgbi_check_route(struct sockaddr *dst_addr)
csk->port_id = port;
csk->mtu = mtu;
csk->dst = dst;
csk->csk_family = AF_INET;
csk->daddr.sin_addr.s_addr = daddr->sin_addr.s_addr;
csk->daddr.sin_port = daddr->sin_port;
csk->daddr.sin_family = daddr->sin_family;
csk->saddr.sin_family = daddr->sin_family;
csk->saddr.sin_addr.s_addr = fl4.saddr;
neigh_release(n);
@ -556,6 +602,121 @@ err_out:
return ERR_PTR(err);
}
static struct rt6_info *find_route_ipv6(const struct in6_addr *saddr,
const struct in6_addr *daddr)
{
struct flowi6 fl;
if (saddr)
memcpy(&fl.saddr, saddr, sizeof(struct in6_addr));
if (daddr)
memcpy(&fl.daddr, daddr, sizeof(struct in6_addr));
return (struct rt6_info *)ip6_route_output(&init_net, NULL, &fl);
}
static struct cxgbi_sock *cxgbi_check_route6(struct sockaddr *dst_addr)
{
struct sockaddr_in6 *daddr6 = (struct sockaddr_in6 *)dst_addr;
struct dst_entry *dst;
struct net_device *ndev;
struct cxgbi_device *cdev;
struct rt6_info *rt = NULL;
struct neighbour *n;
struct in6_addr pref_saddr;
struct cxgbi_sock *csk = NULL;
unsigned int mtu = 0;
int port = 0xFFFF;
int err = 0;
rt = find_route_ipv6(NULL, &daddr6->sin6_addr);
if (!rt) {
pr_info("no route to ipv6 %pI6 port %u\n",
daddr6->sin6_addr.s6_addr,
be16_to_cpu(daddr6->sin6_port));
err = -ENETUNREACH;
goto err_out;
}
dst = &rt->dst;
n = dst_neigh_lookup(dst, &daddr6->sin6_addr);
if (!n) {
pr_info("%pI6, port %u, dst no neighbour.\n",
daddr6->sin6_addr.s6_addr,
be16_to_cpu(daddr6->sin6_port));
err = -ENETUNREACH;
goto rel_rt;
}
ndev = n->dev;
if (ipv6_addr_is_multicast(&rt->rt6i_dst.addr)) {
pr_info("multi-cast route %pI6 port %u, dev %s.\n",
daddr6->sin6_addr.s6_addr,
ntohs(daddr6->sin6_port), ndev->name);
err = -ENETUNREACH;
goto rel_rt;
}
cdev = cxgbi_device_find_by_netdev(ndev, &port);
if (!cdev)
cdev = cxgbi_device_find_by_mac(ndev, &port);
if (!cdev) {
pr_info("dst %pI6 %s, NOT cxgbi device.\n",
daddr6->sin6_addr.s6_addr, ndev->name);
err = -ENETUNREACH;
goto rel_rt;
}
log_debug(1 << CXGBI_DBG_SOCK,
"route to %pI6 :%u, ndev p#%d,%s, cdev 0x%p.\n",
daddr6->sin6_addr.s6_addr, ntohs(daddr6->sin6_port), port,
ndev->name, cdev);
csk = cxgbi_sock_create(cdev);
if (!csk) {
err = -ENOMEM;
goto rel_rt;
}
csk->cdev = cdev;
csk->port_id = port;
csk->mtu = mtu;
csk->dst = dst;
if (ipv6_addr_any(&rt->rt6i_prefsrc.addr)) {
struct inet6_dev *idev = ip6_dst_idev((struct dst_entry *)rt);
err = ipv6_dev_get_saddr(&init_net, idev ? idev->dev : NULL,
&daddr6->sin6_addr, 0, &pref_saddr);
if (err) {
pr_info("failed to get source address to reach %pI6\n",
&daddr6->sin6_addr);
goto rel_rt;
}
} else {
pref_saddr = rt->rt6i_prefsrc.addr;
}
csk->csk_family = AF_INET6;
csk->daddr6.sin6_addr = daddr6->sin6_addr;
csk->daddr6.sin6_port = daddr6->sin6_port;
csk->daddr6.sin6_family = daddr6->sin6_family;
csk->saddr6.sin6_addr = pref_saddr;
neigh_release(n);
return csk;
rel_rt:
if (n)
neigh_release(n);
ip6_rt_put(rt);
if (csk)
cxgbi_sock_closed(csk);
err_out:
return ERR_PTR(err);
}
void cxgbi_sock_established(struct cxgbi_sock *csk, unsigned int snd_isn,
unsigned int opt)
{
@ -2194,6 +2355,34 @@ int cxgbi_set_conn_param(struct iscsi_cls_conn *cls_conn,
}
EXPORT_SYMBOL_GPL(cxgbi_set_conn_param);
static inline int csk_print_port(struct cxgbi_sock *csk, char *buf)
{
int len;
cxgbi_sock_get(csk);
len = sprintf(buf, "%hu\n", ntohs(csk->daddr.sin_port));
cxgbi_sock_put(csk);
return len;
}
static inline int csk_print_ip(struct cxgbi_sock *csk, char *buf)
{
int len;
cxgbi_sock_get(csk);
if (csk->csk_family == AF_INET)
len = sprintf(buf, "%pI4",
&csk->daddr.sin_addr.s_addr);
else
len = sprintf(buf, "%pI6",
&csk->daddr6.sin6_addr);
cxgbi_sock_put(csk);
return len;
}
int cxgbi_get_ep_param(struct iscsi_endpoint *ep, enum iscsi_param param,
char *buf)
{
@ -2447,7 +2636,17 @@ struct iscsi_endpoint *cxgbi_ep_connect(struct Scsi_Host *shost,
}
}
csk = cxgbi_check_route(dst_addr);
if (dst_addr->sa_family == AF_INET) {
csk = cxgbi_check_route(dst_addr);
} else if (dst_addr->sa_family == AF_INET6) {
csk = cxgbi_check_route6(dst_addr);
} else {
pr_info("address family 0x%x NOT supported.\n",
dst_addr->sa_family);
err = -EAFNOSUPPORT;
return (struct iscsi_endpoint *)ERR_PTR(err);
}
if (IS_ERR(csk))
return (struct iscsi_endpoint *)csk;
cxgbi_sock_get(csk);

21
drivers/scsi/cxgbi/libcxgbi.h
View File

@ -44,6 +44,15 @@ enum cxgbi_dbg_flag {
pr_info(fmt, ##__VA_ARGS__); \
} while (0)
#define pr_info_ipaddr(fmt_trail, \
addr1, addr2, args_trail...) \
do { \
if (!((1 << CXGBI_DBG_SOCK) & dbg_level)) \
break; \
pr_info("%pISpc - %pISpc, " fmt_trail, \
addr1, addr2, args_trail); \
} while (0)
/* max. connections per adapter */
#define CXGBI_MAX_CONN 16384
@ -202,8 +211,15 @@ struct cxgbi_sock {
spinlock_t lock;
struct kref refcnt;
unsigned int state;
struct sockaddr_in saddr;
struct sockaddr_in daddr;
unsigned int csk_family;
union {
struct sockaddr_in saddr;
struct sockaddr_in6 saddr6;
};
union {
struct sockaddr_in daddr;
struct sockaddr_in6 daddr6;
};
struct dst_entry *dst;
struct sk_buff_head receive_queue;
struct sk_buff_head write_queue;
@ -692,6 +708,7 @@ struct cxgbi_device *cxgbi_device_register(unsigned int, unsigned int);
void cxgbi_device_unregister(struct cxgbi_device *);
void cxgbi_device_unregister_all(unsigned int flag);
struct cxgbi_device *cxgbi_device_find_by_lldev(void *);
struct cxgbi_device *cxgbi_device_find_by_netdev(struct net_device *, int *);
int cxgbi_hbas_add(struct cxgbi_device *, unsigned int, unsigned int,
struct scsi_host_template *,
struct scsi_transport_template *);