Commit 759a0cc5 authored by Anish Bhatt's avatar Anish Bhatt Committed by David S. Miller
Browse files

cxgb4i: Add ipv6 code to driver, call into libcxgbi ipv6 api


Signed-off-by: default avatarAnish Bhatt <anish@chelsio.com>
Signed-off-by: default avatarKaren Xie <kxie@chelsio.com>
Signed-off-by: default avatarManoj Malviya <manojmalviya@chelsio.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent fc8d0590
......@@ -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);
......
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