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authorLinus Torvalds <torvalds@linux-foundation.org>2011-10-25 13:25:22 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2011-10-25 13:25:22 +0200
commit8a9ea3237e7eb5c25f09e429ad242ae5a3d5ea22 (patch)
treea0a63398a9983667d52cbbbf4e2405b4f22b1d83 /drivers/s390
parent1be025d3cb40cd295123af2c394f7229ef9b30ca (diff)
parent8b3408f8ee994973869d8ba32c5bf482bc4ddca4 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1745 commits) dp83640: free packet queues on remove dp83640: use proper function to free transmit time stamping packets ipv6: Do not use routes from locally generated RAs |PATCH net-next] tg3: add tx_dropped counter be2net: don't create multiple RX/TX rings in multi channel mode be2net: don't create multiple TXQs in BE2 be2net: refactor VF setup/teardown code into be_vf_setup/clear() be2net: add vlan/rx-mode/flow-control config to be_setup() net_sched: cls_flow: use skb_header_pointer() ipv4: avoid useless call of the function check_peer_pmtu TCP: remove TCP_DEBUG net: Fix driver name for mdio-gpio.c ipv4: tcp: fix TOS value in ACK messages sent from TIME_WAIT rtnetlink: Add missing manual netlink notification in dev_change_net_namespaces ipv4: fix ipsec forward performance regression jme: fix irq storm after suspend/resume route: fix ICMP redirect validation net: hold sock reference while processing tx timestamps tcp: md5: add more const attributes Add ethtool -g support to virtio_net ... Fix up conflicts in: - drivers/net/Kconfig: The split-up generated a trivial conflict with removal of a stale reference to Documentation/networking/net-modules.txt. Remove it from the new location instead. - fs/sysfs/dir.c: Fairly nasty conflicts with the sysfs rb-tree usage, conflicting with Eric Biederman's changes for tagged directories.
Diffstat (limited to 'drivers/s390')
-rw-r--r--drivers/s390/cio/qdio.h38
-rw-r--r--drivers/s390/cio/qdio_debug.c3
-rw-r--r--drivers/s390/cio/qdio_main.c208
-rw-r--r--drivers/s390/cio/qdio_setup.c83
-rw-r--r--drivers/s390/cio/qdio_thinint.c88
-rw-r--r--drivers/s390/net/lcs.c2
-rw-r--r--drivers/s390/net/qeth_core.h50
-rw-r--r--drivers/s390/net/qeth_core_main.c780
-rw-r--r--drivers/s390/net/qeth_l2_main.c4
-rw-r--r--drivers/s390/net/qeth_l3.h4
-rw-r--r--drivers/s390/net/qeth_l3_main.c92
-rw-r--r--drivers/s390/net/qeth_l3_sys.c110
12 files changed, 1251 insertions, 211 deletions
diff --git a/drivers/s390/cio/qdio.h b/drivers/s390/cio/qdio.h
index e5c966462c5..3dd86441da3 100644
--- a/drivers/s390/cio/qdio.h
+++ b/drivers/s390/cio/qdio.h
@@ -44,6 +44,7 @@ enum qdio_irq_states {
#define SLSB_STATE_NOT_INIT 0x0
#define SLSB_STATE_EMPTY 0x1
#define SLSB_STATE_PRIMED 0x2
+#define SLSB_STATE_PENDING 0x3
#define SLSB_STATE_HALTED 0xe
#define SLSB_STATE_ERROR 0xf
#define SLSB_TYPE_INPUT 0x0
@@ -67,6 +68,8 @@ enum qdio_irq_states {
(SLSB_OWNER_PROG | SLSB_TYPE_OUTPUT | SLSB_STATE_NOT_INIT) /* 0xa0 */
#define SLSB_P_OUTPUT_EMPTY \
(SLSB_OWNER_PROG | SLSB_TYPE_OUTPUT | SLSB_STATE_EMPTY) /* 0xa1 */
+#define SLSB_P_OUTPUT_PENDING \
+ (SLSB_OWNER_PROG | SLSB_TYPE_OUTPUT | SLSB_STATE_PENDING) /* 0xa3 */
#define SLSB_CU_OUTPUT_PRIMED \
(SLSB_OWNER_CU | SLSB_TYPE_OUTPUT | SLSB_STATE_PRIMED) /* 0x62 */
#define SLSB_P_OUTPUT_HALTED \
@@ -84,19 +87,11 @@ enum qdio_irq_states {
#define CHSC_FLAG_QDIO_CAPABILITY 0x80
#define CHSC_FLAG_VALIDITY 0x40
-/* qdio adapter-characteristics-1 flag */
-#define AC1_SIGA_INPUT_NEEDED 0x40 /* process input queues */
-#define AC1_SIGA_OUTPUT_NEEDED 0x20 /* process output queues */
-#define AC1_SIGA_SYNC_NEEDED 0x10 /* ask hypervisor to sync */
-#define AC1_AUTOMATIC_SYNC_ON_THININT 0x08 /* set by hypervisor */
-#define AC1_AUTOMATIC_SYNC_ON_OUT_PCI 0x04 /* set by hypervisor */
-#define AC1_SC_QEBSM_AVAILABLE 0x02 /* available for subchannel */
-#define AC1_SC_QEBSM_ENABLED 0x01 /* enabled for subchannel */
-
/* SIGA flags */
#define QDIO_SIGA_WRITE 0x00
#define QDIO_SIGA_READ 0x01
#define QDIO_SIGA_SYNC 0x02
+#define QDIO_SIGA_WRITEQ 0x04
#define QDIO_SIGA_QEBSM_FLAG 0x80
#ifdef CONFIG_64BIT
@@ -253,6 +248,12 @@ struct qdio_input_q {
struct qdio_output_q {
/* PCIs are enabled for the queue */
int pci_out_enabled;
+ /* cq: use asynchronous output buffers */
+ int use_cq;
+ /* cq: aobs used for particual SBAL */
+ struct qaob **aobs;
+ /* cq: sbal state related to asynchronous operation */
+ struct qdio_outbuf_state *sbal_state;
/* timer to check for more outbound work */
struct timer_list timer;
/* used SBALs before tasklet schedule */
@@ -432,9 +433,20 @@ struct indicator_t {
extern struct indicator_t *q_indicators;
-static inline int shared_ind(u32 *dsci)
+static inline int has_multiple_inq_on_dsci(struct qdio_irq *irq)
+{
+ return irq->nr_input_qs > 1;
+}
+
+static inline int references_shared_dsci(struct qdio_irq *irq)
{
- return dsci == &q_indicators[TIQDIO_SHARED_IND].ind;
+ return irq->dsci == &q_indicators[TIQDIO_SHARED_IND].ind;
+}
+
+static inline int shared_ind(struct qdio_q *q)
+{
+ struct qdio_irq *i = q->irq_ptr;
+ return references_shared_dsci(i) || has_multiple_inq_on_dsci(i);
}
/* prototypes for thin interrupt */
@@ -449,6 +461,7 @@ void tiqdio_free_memory(void);
int tiqdio_register_thinints(void);
void tiqdio_unregister_thinints(void);
+
/* prototypes for setup */
void qdio_inbound_processing(unsigned long data);
void qdio_outbound_processing(unsigned long data);
@@ -469,6 +482,9 @@ int qdio_setup_create_sysfs(struct ccw_device *cdev);
void qdio_setup_destroy_sysfs(struct ccw_device *cdev);
int qdio_setup_init(void);
void qdio_setup_exit(void);
+int qdio_enable_async_operation(struct qdio_output_q *q);
+void qdio_disable_async_operation(struct qdio_output_q *q);
+struct qaob *qdio_allocate_aob(void);
int debug_get_buf_state(struct qdio_q *q, unsigned int bufnr,
unsigned char *state);
diff --git a/drivers/s390/cio/qdio_debug.c b/drivers/s390/cio/qdio_debug.c
index 0e615cb912d..aaf7f935bfd 100644
--- a/drivers/s390/cio/qdio_debug.c
+++ b/drivers/s390/cio/qdio_debug.c
@@ -76,6 +76,9 @@ static int qstat_show(struct seq_file *m, void *v)
case SLSB_P_OUTPUT_NOT_INIT:
seq_printf(m, "N");
break;
+ case SLSB_P_OUTPUT_PENDING:
+ seq_printf(m, "P");
+ break;
case SLSB_P_INPUT_PRIMED:
case SLSB_CU_OUTPUT_PRIMED:
seq_printf(m, "+");
diff --git a/drivers/s390/cio/qdio_main.c b/drivers/s390/cio/qdio_main.c
index 288c9140290..9a122280246 100644
--- a/drivers/s390/cio/qdio_main.c
+++ b/drivers/s390/cio/qdio_main.c
@@ -14,6 +14,7 @@
#include <linux/timer.h>
#include <linux/delay.h>
#include <linux/gfp.h>
+#include <linux/io.h>
#include <linux/kernel_stat.h>
#include <linux/atomic.h>
#include <asm/debug.h>
@@ -77,11 +78,13 @@ static inline int do_siga_input(unsigned long schid, unsigned int mask,
* Note: For IQDC unicast queues only the highest priority queue is processed.
*/
static inline int do_siga_output(unsigned long schid, unsigned long mask,
- unsigned int *bb, unsigned int fc)
+ unsigned int *bb, unsigned int fc,
+ unsigned long aob)
{
register unsigned long __fc asm("0") = fc;
register unsigned long __schid asm("1") = schid;
register unsigned long __mask asm("2") = mask;
+ register unsigned long __aob asm("3") = aob;
int cc = QDIO_ERROR_SIGA_ACCESS_EXCEPTION;
asm volatile(
@@ -90,7 +93,8 @@ static inline int do_siga_output(unsigned long schid, unsigned long mask,
" srl %0,28\n"
"1:\n"
EX_TABLE(0b, 1b)
- : "+d" (cc), "+d" (__fc), "+d" (__schid), "+d" (__mask)
+ : "+d" (cc), "+d" (__fc), "+d" (__schid), "+d" (__mask),
+ "+d" (__aob)
: : "cc", "memory");
*bb = ((unsigned int) __fc) >> 31;
return cc;
@@ -212,7 +216,7 @@ again:
/* returns number of examined buffers and their common state in *state */
static inline int get_buf_states(struct qdio_q *q, unsigned int bufnr,
unsigned char *state, unsigned int count,
- int auto_ack)
+ int auto_ack, int merge_pending)
{
unsigned char __state = 0;
int i;
@@ -224,9 +228,14 @@ static inline int get_buf_states(struct qdio_q *q, unsigned int bufnr,
return qdio_do_eqbs(q, state, bufnr, count, auto_ack);
for (i = 0; i < count; i++) {
- if (!__state)
+ if (!__state) {
__state = q->slsb.val[bufnr];
- else if (q->slsb.val[bufnr] != __state)
+ if (merge_pending && __state == SLSB_P_OUTPUT_PENDING)
+ __state = SLSB_P_OUTPUT_EMPTY;
+ } else if (merge_pending) {
+ if ((q->slsb.val[bufnr] & __state) != __state)
+ break;
+ } else if (q->slsb.val[bufnr] != __state)
break;
bufnr = next_buf(bufnr);
}
@@ -237,7 +246,7 @@ static inline int get_buf_states(struct qdio_q *q, unsigned int bufnr,
static inline int get_buf_state(struct qdio_q *q, unsigned int bufnr,
unsigned char *state, int auto_ack)
{
- return get_buf_states(q, bufnr, state, 1, auto_ack);
+ return get_buf_states(q, bufnr, state, 1, auto_ack, 0);
}
/* wrap-around safe setting of slsb states, returns number of changed buffers */
@@ -308,19 +317,28 @@ static inline int qdio_siga_sync_q(struct qdio_q *q)
return qdio_siga_sync(q, q->mask, 0);
}
-static int qdio_siga_output(struct qdio_q *q, unsigned int *busy_bit)
+static int qdio_siga_output(struct qdio_q *q, unsigned int *busy_bit,
+ unsigned long aob)
{
unsigned long schid = *((u32 *) &q->irq_ptr->schid);
unsigned int fc = QDIO_SIGA_WRITE;
u64 start_time = 0;
int retries = 0, cc;
+ unsigned long laob = 0;
+
+ if (q->u.out.use_cq && aob != 0) {
+ fc = QDIO_SIGA_WRITEQ;
+ laob = aob;
+ }
if (is_qebsm(q)) {
schid = q->irq_ptr->sch_token;
fc |= QDIO_SIGA_QEBSM_FLAG;
}
again:
- cc = do_siga_output(schid, q->mask, busy_bit, fc);
+ WARN_ON_ONCE((aob && queue_type(q) != QDIO_IQDIO_QFMT) ||
+ (aob && fc != QDIO_SIGA_WRITEQ));
+ cc = do_siga_output(schid, q->mask, busy_bit, fc, laob);
/* hipersocket busy condition */
if (unlikely(*busy_bit)) {
@@ -379,7 +397,7 @@ int debug_get_buf_state(struct qdio_q *q, unsigned int bufnr,
{
if (need_siga_sync(q))
qdio_siga_sync_q(q);
- return get_buf_states(q, bufnr, state, 1, 0);
+ return get_buf_states(q, bufnr, state, 1, 0, 0);
}
static inline void qdio_stop_polling(struct qdio_q *q)
@@ -507,7 +525,7 @@ static int get_inbound_buffer_frontier(struct qdio_q *q)
* No siga sync here, as a PCI or we after a thin interrupt
* already sync'ed the queues.
*/
- count = get_buf_states(q, q->first_to_check, &state, count, 1);
+ count = get_buf_states(q, q->first_to_check, &state, count, 1, 0);
if (!count)
goto out;
@@ -590,6 +608,107 @@ static inline int qdio_inbound_q_done(struct qdio_q *q)
return 0;
}
+static inline int contains_aobs(struct qdio_q *q)
+{
+ return !q->is_input_q && q->u.out.use_cq;
+}
+
+static inline void qdio_trace_aob(struct qdio_irq *irq, struct qdio_q *q,
+ int i, struct qaob *aob)
+{
+ int tmp;
+
+ DBF_DEV_EVENT(DBF_INFO, irq, "AOB%d:%lx", i,
+ (unsigned long) virt_to_phys(aob));
+ DBF_DEV_EVENT(DBF_INFO, irq, "RES00:%lx",
+ (unsigned long) aob->res0[0]);
+ DBF_DEV_EVENT(DBF_INFO, irq, "RES01:%lx",
+ (unsigned long) aob->res0[1]);
+ DBF_DEV_EVENT(DBF_INFO, irq, "RES02:%lx",
+ (unsigned long) aob->res0[2]);
+ DBF_DEV_EVENT(DBF_INFO, irq, "RES03:%lx",
+ (unsigned long) aob->res0[3]);
+ DBF_DEV_EVENT(DBF_INFO, irq, "RES04:%lx",
+ (unsigned long) aob->res0[4]);
+ DBF_DEV_EVENT(DBF_INFO, irq, "RES05:%lx",
+ (unsigned long) aob->res0[5]);
+ DBF_DEV_EVENT(DBF_INFO, irq, "RES1:%x", aob->res1);
+ DBF_DEV_EVENT(DBF_INFO, irq, "RES2:%x", aob->res2);
+ DBF_DEV_EVENT(DBF_INFO, irq, "RES3:%x", aob->res3);
+ DBF_DEV_EVENT(DBF_INFO, irq, "AORC:%u", aob->aorc);
+ DBF_DEV_EVENT(DBF_INFO, irq, "FLAGS:%u", aob->flags);
+ DBF_DEV_EVENT(DBF_INFO, irq, "CBTBS:%u", aob->cbtbs);
+ DBF_DEV_EVENT(DBF_INFO, irq, "SBC:%u", aob->sb_count);
+ for (tmp = 0; tmp < QDIO_MAX_ELEMENTS_PER_BUFFER; ++tmp) {
+ DBF_DEV_EVENT(DBF_INFO, irq, "SBA%d:%lx", tmp,
+ (unsigned long) aob->sba[tmp]);
+ DBF_DEV_EVENT(DBF_INFO, irq, "rSBA%d:%lx", tmp,
+ (unsigned long) q->sbal[i]->element[tmp].addr);
+ DBF_DEV_EVENT(DBF_INFO, irq, "DC%d:%u", tmp, aob->dcount[tmp]);
+ DBF_DEV_EVENT(DBF_INFO, irq, "rDC%d:%u", tmp,
+ q->sbal[i]->element[tmp].length);
+ }
+ DBF_DEV_EVENT(DBF_INFO, irq, "USER0:%lx", (unsigned long) aob->user0);
+ for (tmp = 0; tmp < 2; ++tmp) {
+ DBF_DEV_EVENT(DBF_INFO, irq, "RES4%d:%lx", tmp,
+ (unsigned long) aob->res4[tmp]);
+ }
+ DBF_DEV_EVENT(DBF_INFO, irq, "USER1:%lx", (unsigned long) aob->user1);
+ DBF_DEV_EVENT(DBF_INFO, irq, "USER2:%lx", (unsigned long) aob->user2);
+}
+
+static inline void qdio_handle_aobs(struct qdio_q *q, int start, int count)
+{
+ unsigned char state = 0;
+ int j, b = start;
+
+ if (!contains_aobs(q))
+ return;
+
+ for (j = 0; j < count; ++j) {
+ get_buf_state(q, b, &state, 0);
+ if (state == SLSB_P_OUTPUT_PENDING) {
+ struct qaob *aob = q->u.out.aobs[b];
+ if (aob == NULL)
+ continue;
+
+ BUG_ON(q->u.out.sbal_state == NULL);
+ q->u.out.sbal_state[b].flags |=
+ QDIO_OUTBUF_STATE_FLAG_PENDING;
+ q->u.out.aobs[b] = NULL;
+ } else if (state == SLSB_P_OUTPUT_EMPTY) {
+ BUG_ON(q->u.out.sbal_state == NULL);
+ q->u.out.sbal_state[b].aob = NULL;
+ }
+ b = next_buf(b);
+ }
+}
+
+static inline unsigned long qdio_aob_for_buffer(struct qdio_output_q *q,
+ int bufnr)
+{
+ unsigned long phys_aob = 0;
+
+ if (!q->use_cq)
+ goto out;
+
+ if (!q->aobs[bufnr]) {
+ struct qaob *aob = qdio_allocate_aob();
+ q->aobs[bufnr] = aob;
+ }
+ if (q->aobs[bufnr]) {
+ BUG_ON(q->sbal_state == NULL);
+ q->sbal_state[bufnr].flags = QDIO_OUTBUF_STATE_FLAG_NONE;
+ q->sbal_state[bufnr].aob = q->aobs[bufnr];
+ q->aobs[bufnr]->user1 = (u64) q->sbal_state[bufnr].user;
+ phys_aob = virt_to_phys(q->aobs[bufnr]);
+ BUG_ON(phys_aob & 0xFF);
+ }
+
+out:
+ return phys_aob;
+}
+
static void qdio_kick_handler(struct qdio_q *q)
{
int start = q->first_to_kick;
@@ -610,6 +729,8 @@ static void qdio_kick_handler(struct qdio_q *q)
start, count);
}
+ qdio_handle_aobs(q, start, count);
+
q->handler(q->irq_ptr->cdev, q->qdio_error, q->nr, start, count,
q->irq_ptr->int_parm);
@@ -672,23 +793,26 @@ static int get_outbound_buffer_frontier(struct qdio_q *q)
*/
count = min(atomic_read(&q->nr_buf_used), QDIO_MAX_BUFFERS_MASK);
stop = add_buf(q->first_to_check, count);
-
if (q->first_to_check == stop)
- return q->first_to_check;
+ goto out;
- count = get_buf_states(q, q->first_to_check, &state, count, 0);
+ count = get_buf_states(q, q->first_to_check, &state, count, 0, 1);
if (!count)
- return q->first_to_check;
+ goto out;
switch (state) {
+ case SLSB_P_OUTPUT_PENDING:
+ BUG();
case SLSB_P_OUTPUT_EMPTY:
/* the adapter got it */
- DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "out empty:%1d %02x", q->nr, count);
+ DBF_DEV_EVENT(DBF_INFO, q->irq_ptr,
+ "out empty:%1d %02x", q->nr, count);
atomic_sub(count, &q->nr_buf_used);
q->first_to_check = add_buf(q->first_to_check, count);
if (q->irq_ptr->perf_stat_enabled)
account_sbals(q, count);
+
break;
case SLSB_P_OUTPUT_ERROR:
process_buffer_error(q, count);
@@ -701,7 +825,8 @@ static int get_outbound_buffer_frontier(struct qdio_q *q)
/* the adapter has not fetched the output yet */
if (q->irq_ptr->perf_stat_enabled)
q->q_stats.nr_sbal_nop++;
- DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "out primed:%1d", q->nr);
+ DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "out primed:%1d",
+ q->nr);
break;
case SLSB_P_OUTPUT_NOT_INIT:
case SLSB_P_OUTPUT_HALTED:
@@ -709,6 +834,8 @@ static int get_outbound_buffer_frontier(struct qdio_q *q)
default:
BUG();
}
+
+out:
return q->first_to_check;
}
@@ -732,7 +859,7 @@ static inline int qdio_outbound_q_moved(struct qdio_q *q)
return 0;
}
-static int qdio_kick_outbound_q(struct qdio_q *q)
+static int qdio_kick_outbound_q(struct qdio_q *q, unsigned long aob)
{
int retries = 0, cc;
unsigned int busy_bit;
@@ -744,7 +871,7 @@ static int qdio_kick_outbound_q(struct qdio_q *q)
retry:
qperf_inc(q, siga_write);
- cc = qdio_siga_output(q, &busy_bit);
+ cc = qdio_siga_output(q, &busy_bit, aob);
switch (cc) {
case 0:
break;
@@ -921,8 +1048,9 @@ static void qdio_int_handler_pci(struct qdio_irq *irq_ptr)
}
q->u.in.queue_start_poll(q->irq_ptr->cdev, q->nr,
q->irq_ptr->int_parm);
- } else
+ } else {
tasklet_schedule(&q->tasklet);
+ }
}
if (!pci_out_supported(q))
@@ -1236,6 +1364,26 @@ out_err:
}
EXPORT_SYMBOL_GPL(qdio_allocate);
+static void qdio_detect_hsicq(struct qdio_irq *irq_ptr)
+{
+ struct qdio_q *q = irq_ptr->input_qs[0];
+ int i, use_cq = 0;
+
+ if (irq_ptr->nr_input_qs > 1 && queue_type(q) == QDIO_IQDIO_QFMT)
+ use_cq = 1;
+
+ for_each_output_queue(irq_ptr, q, i) {
+ if (use_cq) {
+ if (qdio_enable_async_operation(&q->u.out) < 0) {
+ use_cq = 0;
+ continue;
+ }
+ } else
+ qdio_disable_async_operation(&q->u.out);
+ }
+ DBF_EVENT("use_cq:%d", use_cq);
+}
+
/**
* qdio_establish - establish queues on a qdio subchannel
* @init_data: initialization data
@@ -1301,6 +1449,8 @@ int qdio_establish(struct qdio_initialize *init_data)
qdio_setup_ssqd_info(irq_ptr);
DBF_EVENT("qib ac:%4x", irq_ptr->qib.ac);
+ qdio_detect_hsicq(irq_ptr);
+
/* qebsm is now setup if available, initialize buffer states */
qdio_init_buf_states(irq_ptr);
@@ -1442,12 +1592,9 @@ set:
used = atomic_add_return(count, &q->nr_buf_used) - count;
BUG_ON(used + count > QDIO_MAX_BUFFERS_PER_Q);
- /* no need to signal as long as the adapter had free buffers */
- if (used)
- return 0;
-
if (need_siga_in(q))
return qdio_siga_input(q);
+
return 0;
}
@@ -1480,17 +1627,21 @@ static int handle_outbound(struct qdio_q *q, unsigned int callflags,
q->u.out.pci_out_enabled = 0;
if (queue_type(q) == QDIO_IQDIO_QFMT) {
- /* One SIGA-W per buffer required for unicast HiperSockets. */
+ unsigned long phys_aob = 0;
+
+ /* One SIGA-W per buffer required for unicast HSI */
WARN_ON_ONCE(count > 1 && !multicast_outbound(q));
- rc = qdio_kick_outbound_q(q);
+ phys_aob = qdio_aob_for_buffer(&q->u.out, bufnr);
+
+ rc = qdio_kick_outbound_q(q, phys_aob);
} else if (need_siga_sync(q)) {
rc = qdio_siga_sync_q(q);
} else {
/* try to fast requeue buffers */
get_buf_state(q, prev_buf(bufnr), &state, 0);
if (state != SLSB_CU_OUTPUT_PRIMED)
- rc = qdio_kick_outbound_q(q);
+ rc = qdio_kick_outbound_q(q, 0);
else
qperf_inc(q, fast_requeue);
}
@@ -1518,6 +1669,7 @@ int do_QDIO(struct ccw_device *cdev, unsigned int callflags,
{
struct qdio_irq *irq_ptr;
+
if (bufnr >= QDIO_MAX_BUFFERS_PER_Q || count > QDIO_MAX_BUFFERS_PER_Q)
return -EINVAL;
@@ -1562,7 +1714,7 @@ int qdio_start_irq(struct ccw_device *cdev, int nr)
WARN_ON(queue_irqs_enabled(q));
- if (!shared_ind(q->irq_ptr->dsci))
+ if (!shared_ind(q))
xchg(q->irq_ptr->dsci, 0);
qdio_stop_polling(q);
@@ -1572,7 +1724,7 @@ int qdio_start_irq(struct ccw_device *cdev, int nr)
* We need to check again to not lose initiative after
* resetting the ACK state.
*/
- if (!shared_ind(q->irq_ptr->dsci) && *q->irq_ptr->dsci)
+ if (!shared_ind(q) && *q->irq_ptr->dsci)
goto rescan;
if (!qdio_inbound_q_done(q))
goto rescan;
diff --git a/drivers/s390/cio/qdio_setup.c b/drivers/s390/cio/qdio_setup.c
index 89107d0938c..dd8bd670a6b 100644
--- a/drivers/s390/cio/qdio_setup.c
+++ b/drivers/s390/cio/qdio_setup.c
@@ -19,6 +19,22 @@
#include "qdio_debug.h"
static struct kmem_cache *qdio_q_cache;
+static struct kmem_cache *qdio_aob_cache;
+
+struct qaob *qdio_allocate_aob()
+{
+ struct qaob *aob;
+
+ aob = kmem_cache_zalloc(qdio_aob_cache, GFP_ATOMIC);
+ return aob;
+}
+EXPORT_SYMBOL_GPL(qdio_allocate_aob);
+
+void qdio_release_aob(struct qaob *aob)
+{
+ kmem_cache_free(qdio_aob_cache, aob);
+}
+EXPORT_SYMBOL_GPL(qdio_release_aob);
/*
* qebsm is only available under 64bit but the adapter sets the feature
@@ -154,29 +170,36 @@ static void setup_queues(struct qdio_irq *irq_ptr,
struct qdio_q *q;
void **input_sbal_array = qdio_init->input_sbal_addr_array;
void **output_sbal_array = qdio_init->output_sbal_addr_array;
+ struct qdio_outbuf_state *output_sbal_state_array =
+ qdio_init->output_sbal_state_array;
int i;
for_each_input_queue(irq_ptr, q, i) {
- DBF_EVENT("in-q:%1d", i);
+ DBF_EVENT("inq:%1d", i);
setup_queues_misc(q, irq_ptr, qdio_init->input_handler, i);
q->is_input_q = 1;
- q->u.in.queue_start_poll = qdio_init->queue_start_poll;
+ q->u.in.queue_start_poll = qdio_init->queue_start_poll[i];
+
setup_storage_lists(q, irq_ptr, input_sbal_array, i);
input_sbal_array += QDIO_MAX_BUFFERS_PER_Q;
- if (is_thinint_irq(irq_ptr))
+ if (is_thinint_irq(irq_ptr)) {
tasklet_init(&q->tasklet, tiqdio_inbound_processing,
(unsigned long) q);
- else
+ } else {
tasklet_init(&q->tasklet, qdio_inbound_processing,
(unsigned long) q);
+ }
}
for_each_output_queue(irq_ptr, q, i) {
DBF_EVENT("outq:%1d", i);
setup_queues_misc(q, irq_ptr, qdio_init->output_handler, i);
+ q->u.out.sbal_state = output_sbal_state_array;
+ output_sbal_state_array += QDIO_MAX_BUFFERS_PER_Q;
+
q->is_input_q = 0;
q->u.out.scan_threshold = qdio_init->scan_threshold;
setup_storage_lists(q, irq_ptr, output_sbal_array, i);
@@ -311,6 +334,19 @@ void qdio_release_memory(struct qdio_irq *irq_ptr)
for (i = 0; i < QDIO_MAX_QUEUES_PER_IRQ; i++) {
q = irq_ptr->output_qs[i];
if (q) {
+ if (q->u.out.use_cq) {
+ int n;
+
+ for (n = 0; n < QDIO_MAX_BUFFERS_PER_Q; ++n) {
+ struct qaob *aob = q->u.out.aobs[n];
+ if (aob) {
+ qdio_release_aob(aob);
+ q->u.out.aobs[n] = NULL;
+ }
+ }
+
+ qdio_disable_async_operation(&q->u.out);
+ }
free_page((unsigned long) q->slib);
kmem_cache_free(qdio_q_cache, q);
}
@@ -465,23 +501,60 @@ void qdio_print_subchannel_info(struct qdio_irq *irq_ptr,
printk(KERN_INFO "%s", s);
}
+int qdio_enable_async_operation(struct qdio_output_q *outq)
+{
+ outq->aobs = kzalloc(sizeof(struct qaob *) * QDIO_MAX_BUFFERS_PER_Q,
+ GFP_ATOMIC);
+ if (!outq->aobs) {
+ outq->use_cq = 0;
+ return -ENOMEM;
+ }
+ outq->use_cq = 1;
+ return 0;
+}
+
+void qdio_disable_async_operation(struct qdio_output_q *q)
+{
+ kfree(q->aobs);
+ q->aobs = NULL;
+ q->use_cq = 0;
+}
+
int __init qdio_setup_init(void)
{
+ int rc;
+
qdio_q_cache = kmem_cache_create("qdio_q", sizeof(struct qdio_q),
256, 0, NULL);
if (!qdio_q_cache)
return -ENOMEM;
+ qdio_aob_cache = kmem_cache_create("qdio_aob",
+ sizeof(struct qaob),
+ sizeof(struct qaob),
+ 0,
+ NULL);
+ if (!qdio_aob_cache) {
+ rc = -ENOMEM;
+ goto free_qdio_q_cache;
+ }
+
/* Check for OSA/FCP thin interrupts (bit 67). */
DBF_EVENT("thinint:%1d",
(css_general_characteristics.aif_osa) ? 1 : 0);
/* Check for QEBSM support in general (bit 58). */
DBF_EVENT("cssQEBSM:%1d", (qebsm_possible()) ? 1 : 0);
- return 0;
+ rc = 0;
+out:
+ return rc;
+free_qdio_q_cache:
+ kmem_cache_destroy(qdio_q_cache);
+ goto out;
}
void qdio_setup_exit(void)
{
+ kmem_cache_destroy(qdio_aob_cache);
kmem_cache_destroy(qdio_q_cache);
}
diff --git a/drivers/s390/cio/qdio_thinint.c b/drivers/s390/cio/qdio_thinint.c
index 2a1d4dfaf85..a3e3949d7b6 100644
--- a/drivers/s390/cio/qdio_thinint.c
+++ b/drivers/s390/cio/qdio_thinint.c
@@ -67,12 +67,9 @@ static void put_indicator(u32 *addr)
void tiqdio_add_input_queues(struct qdio_irq *irq_ptr)
{
- struct qdio_q *q;
- int i;
-
mutex_lock(&tiq_list_lock);
- for_each_input_queue(irq_ptr, q, i)
- list_add_rcu(&q->entry, &tiq_list);
+ BUG_ON(irq_ptr->nr_input_qs < 1);
+ list_add_rcu(&irq_ptr->input_qs[0]->entry, &tiq_list);
mutex_unlock(&tiq_list_lock);
xchg(irq_ptr->dsci, 1 << 7);
}
@@ -80,19 +77,17 @@ void tiqdio_add_input_queues(struct qdio_irq *irq_ptr)
void tiqdio_remove_input_queues(struct qdio_irq *irq_ptr)
{
struct qdio_q *q;
- int i;
- for (i = 0; i < irq_ptr->nr_input_qs; i++) {
- q = irq_ptr->input_qs[i];
- /* if establish triggered an error */
- if (!q || !q->entry.prev || !q->entry.next)
- continue;
+ BUG_ON(irq_ptr->nr_input_qs < 1);
+ q = irq_ptr->input_qs[0];
+ /* if establish triggered an error */
+ if (!q || !q->entry.prev || !q->entry.next)
+ return;
- mutex_lock(&tiq_list_lock);
- list_del_rcu(&q->entry);
- mutex_unlock(&tiq_list_lock);
- synchronize_rcu();
- }
+ mutex_lock(&tiq_list_lock);
+ list_del_rcu(&q->entry);
+ mutex_unlock(&tiq_list_lock);
+ synchronize_rcu();
}
static inline u32 clear_shared_ind(void)
@@ -102,6 +97,40 @@ static inline u32 clear_shared_ind(void)
return xchg(&q_indicators[TIQDIO_SHARED_IND].ind, 0);
}
+static inline void tiqdio_call_inq_handlers(struct qdio_irq *irq)
+{
+ struct qdio_q *q;
+ int i;
+
+ for_each_input_queue(irq, q, i) {
+ if (!references_shared_dsci(irq) &&
+ has_multiple_inq_on_dsci(irq))
+ xchg(q->irq_ptr->dsci, 0);
+
+ if (q->u.in.queue_start_poll) {
+ /* skip if polling is enabled or already in work */
+ if (test_and_set_bit(QDIO_QUEUE_IRQS_DISABLED,
+ &q->u.in.queue_irq_state)) {
+ qperf_inc(q, int_discarded);
+ continue;
+ }
+
+ /* avoid dsci clear here, done after processing */
+ q->u.in.queue_start_poll(q->irq_ptr->cdev, q->nr,
+ q->irq_ptr->int_parm);
+ } else {
+ if (!shared_ind(q))
+ xchg(q->irq_ptr->dsci, 0);
+
+ /*
+ * Call inbound processing but not directly
+ * since that could starve other thinint queues.
+ */
+ tasklet_schedule(&q->tasklet);
+ }
+ }
+}
+
/**
* tiqdio_thinint_handler - thin interrupt handler for qdio
* @alsi: pointer to adapter local summary indicator
@@ -120,35 +149,18 @@ static void tiqdio_thinint_handler(void *alsi, void *data)
/* check for work on all inbound thinint queues */
list_for_each_entry_rcu(q, &tiq_list, entry) {
+ struct qdio_irq *irq;
/* only process queues from changed sets */
- if (unlikely(shared_ind(q->irq_ptr->dsci))) {
+ irq = q->irq_ptr;
+ if (unlikely(references_shared_dsci(irq))) {
if (!si_used)
continue;
- } else if (!*q->irq_ptr->dsci)
+ } else if (!*irq->dsci)
continue;
- if (q->u.in.queue_start_poll) {
- /* skip if polling is enabled or already in work */
- if (test_and_set_bit(QDIO_QUEUE_IRQS_DISABLED,
- &q->u.in.queue_irq_state)) {
- qperf_inc(q, int_discarded);
- continue;
- }
+ tiqdio_call_inq_handlers(irq);
- /* avoid dsci clear here, done after processing */
- q->u.in.queue_start_poll(q->irq_ptr->cdev, q->nr,
- q->irq_ptr->int_parm);
- } else {
- /* only clear it if the indicator is non-shared */
- if (!shared_ind(q->irq_ptr->dsci))
- xchg(q->irq_ptr->dsci, 0);
- /*
- * Call inbound processing but not directly
- * since that could starve other thinint queues.
- */
- tasklet_schedule(&q->tasklet);
- }
qperf_inc(q, adapter_int);
}
rcu_read_unlock();
diff --git a/drivers/s390/net/lcs.c b/drivers/s390/net/lcs.c
index c3b8064a102..fb246b944b1 100644
--- a/drivers/s390/net/lcs.c
+++ b/drivers/s390/net/lcs.c
@@ -2122,7 +2122,7 @@ static const struct net_device_ops lcs_mc_netdev_ops = {
.ndo_stop = lcs_stop_device,
.ndo_get_stats = lcs_getstats,
.ndo_start_xmit = lcs_start_xmit,
- .ndo_set_multicast_list = lcs_set_multicast_list,
+ .ndo_set_rx_mode = lcs_set_multicast_list,
};
static int
diff --git a/drivers/s390/net/qeth_core.h b/drivers/s390/net/qeth_core.h
index 26a4110eeb2..b77c65ed138 100644
--- a/drivers/s390/net/qeth_core.h
+++ b/drivers/s390/net/qeth_core.h
@@ -110,6 +110,10 @@ struct qeth_perf_stats {
unsigned int sc_dp_p;
unsigned int sc_p_dp;
+ /* qdio_cq_handler: number of times called, time spent in */
+ __u64 cq_start_time;
+ unsigned int cq_cnt;
+ unsigned int cq_time;
/* qdio_input_handler: number of times called, time spent in */
__u64 inbound_start_time;
unsigned int inbound_cnt;
@@ -213,6 +217,7 @@ static inline int qeth_is_ipa_enabled(struct qeth_ipa_info *ipa,
*/
#define QETH_TX_TIMEOUT 100 * HZ
#define QETH_RCD_TIMEOUT 60 * HZ
+#define QETH_RECLAIM_WORK_TIME HZ
#define QETH_HEADER_SIZE 32
#define QETH_MAX_PORTNO 15
@@ -231,7 +236,8 @@ static inline int qeth_is_ipa_enabled(struct qeth_ipa_info *ipa,
#define QETH_IN_BUF_COUNT_MAX 128
#define QETH_MAX_BUFFER_ELEMENTS(card) ((card)->qdio.in_buf_size >> 12)
#define QETH_IN_BUF_REQUEUE_THRESHOLD(card) \
- ((card)->qdio.in_buf_pool.buf_count / 2)
+ ((card)->ssqd.qdioac1 & AC1_SIGA_INPUT_NEEDED ? 1 : \
+ ((card)->qdio.in_buf_pool.buf_count / 2))
/* buffers we have to be behind before we get a PCI */
#define QETH_PCI_THRESHOLD_A(card) ((card)->qdio.in_buf_pool.buf_count+1)
@@ -260,6 +266,7 @@ static inline int qeth_is_ipa_enabled(struct qeth_ipa_info *ipa,
/* large receive scatter gather copy break */
#define QETH_RX_SG_CB (PAGE_SIZE >> 1)
+#define QETH_RX_PULL_LEN 256
struct qeth_hdr_layer3 {
__u8 id;
@@ -375,6 +382,21 @@ enum qeth_qdio_buffer_states {
* outbound: filled by driver; owned by hardware in order to be sent
*/
QETH_QDIO_BUF_PRIMED,
+ /*
+ * inbound: not applicable
+ * outbound: identified to be pending in TPQ
+ */
+ QETH_QDIO_BUF_PENDING,
+ /*
+ * inbound: not applicable
+ * outbound: found in completion queue
+ */
+ QETH_QDIO_BUF_IN_CQ,
+ /*
+ * inbound: not applicable
+ * outbound: handled via transfer pending / completion queue
+ */
+ QETH_QDIO_BUF_HANDLED_DELAYED,
};
enum qeth_qdio_info_states {
@@ -399,6 +421,7 @@ struct qeth_qdio_buffer {
struct qdio_buffer *buffer;
/* the buffer pool entry currently associated to this buffer */
struct qeth_buffer_pool_entry *pool_entry;
+ struct sk_buff *rx_skb;
};
struct qeth_qdio_q {
@@ -412,8 +435,11 @@ struct qeth_qdio_out_buffer {
atomic_t state;
int next_element_to_fill;
struct sk_buff_head skb_list;
- struct list_head ctx_list;
int is_header[16];
+
+ struct qaob *aob;
+ struct qeth_qdio_out_q *q;
+ struct qeth_qdio_out_buffer *next_pending;
};
struct qeth_card;
@@ -426,7 +452,8 @@ enum qeth_out_q_states {
struct qeth_qdio_out_q {
struct qdio_buffer qdio_bufs[QDIO_MAX_BUFFERS_PER_Q];
- struct qeth_qdio_out_buffer bufs[QDIO_MAX_BUFFERS_PER_Q];
+ struct qeth_qdio_out_buffer *bufs[QDIO_MAX_BUFFERS_PER_Q];
+ struct qdio_outbuf_state *bufstates; /* convenience pointer */
int queue_no;
struct qeth_card *card;
atomic_t state;
@@ -447,7 +474,9 @@ struct qeth_qdio_out_q {
struct qeth_qdio_info {
atomic_t state;
/* input */
+ int no_in_queues;
struct qeth_qdio_q *in_q;
+ struct qeth_qdio_q *c_q;
struct qeth_qdio_buffer_pool in_buf_pool;
struct qeth_qdio_buffer_pool init_pool;
int in_buf_size;
@@ -455,6 +484,7 @@ struct qeth_qdio_info {
/* output */
int no_out_queues;
struct qeth_qdio_out_q **out_qs;
+ struct qdio_outbuf_state *out_bufstates;
/* priority queueing */
int do_prio_queueing;
@@ -526,6 +556,12 @@ enum qeth_cmd_buffer_state {
BUF_STATE_PROCESSED,
};
+enum qeth_cq {
+ QETH_CQ_DISABLED = 0,
+ QETH_CQ_ENABLED = 1,
+ QETH_CQ_NOTAVAILABLE = 2,
+};
+
struct qeth_ipato {
int enabled;
int invert4;
@@ -650,6 +686,8 @@ struct qeth_card_options {
int rx_sg_cb;
enum qeth_ipa_isolation_modes isolation;
int sniffer;
+ enum qeth_cq cq;
+ char hsuid[9];
};
/*
@@ -747,6 +785,8 @@ struct qeth_card {
struct mutex discipline_mutex;
struct napi_struct napi;
struct qeth_rx rx;
+ struct delayed_work buffer_reclaim_work;
+ int reclaim_index;
};
struct qeth_card_list_struct {
@@ -812,6 +852,7 @@ int qeth_core_create_device_attributes(struct device *);
void qeth_core_remove_device_attributes(struct device *);
int qeth_core_create_osn_attributes(struct device *);
void qeth_core_remove_osn_attributes(struct device *);
+void qeth_buffer_reclaim_work(struct work_struct *);
/* exports for qeth discipline device drivers */
extern struct qeth_card_list_struct qeth_core_card_list;
@@ -840,7 +881,7 @@ int qeth_check_qdio_errors(struct qeth_card *, struct qdio_buffer *,
unsigned int, const char *);
void qeth_queue_input_buffer(struct qeth_card *, int);
struct sk_buff *qeth_core_get_next_skb(struct qeth_card *,
- struct qdio_buffer *, struct qdio_buffer_element **, int *,
+ struct qeth_qdio_buffer *, struct qdio_buffer_element **, int *,
struct qeth_hdr **);
void qeth_schedule_recovery(struct qeth_card *);
void qeth_qdio_start_poll(struct ccw_device *, int, unsigned long);
@@ -887,6 +928,7 @@ void qeth_dbf_longtext(debug_info_t *id, int level, char *text, ...);
int qeth_core_ethtool_get_settings(struct net_device *, struct ethtool_cmd *);
int qeth_set_access_ctrl_online(struct qeth_card *card);
int qeth_hdr_chk_and_bounce(struct sk_buff *, int);
+int qeth_configure_cq(struct qeth_card *, enum qeth_cq);
int qeth_hw_trap(struct qeth_card *, enum qeth_diags_trap_action);
int qeth_query_ipassists(struct qeth_card *, enum qeth_prot_versions prot);
diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c
index 4550573c25e..81534437373 100644
--- a/drivers/s390/net/qeth_core_main.c
+++ b/drivers/s390/net/qeth_core_main.c
@@ -21,6 +21,7 @@
#include <linux/mii.h>
#include <linux/kthread.h>
#include <linux/slab.h>
+#include <net/iucv/af_iucv.h>
#include <asm/ebcdic.h>
#include <asm/io.h>
@@ -44,6 +45,7 @@ struct qeth_card_list_struct qeth_core_card_list;
EXPORT_SYMBOL_GPL(qeth_core_card_list);
struct kmem_cache *qeth_core_header_cache;
EXPORT_SYMBOL_GPL(qeth_core_header_cache);
+static struct kmem_cache *qeth_qdio_outbuf_cache;
static struct device *qeth_core_root_dev;
static unsigned int known_devices[][6] = QETH_MODELLIST_ARRAY;
@@ -56,6 +58,14 @@ static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *);
static void qeth_setup_ccw(struct qeth_channel *, unsigned char *, __u32);
static void qeth_free_buffer_pool(struct qeth_card *);
static int qeth_qdio_establish(struct qeth_card *);
+static void qeth_free_qdio_buffers(struct qeth_card *);
+static void qeth_notify_skbs(struct qeth_qdio_out_q *queue,
+ struct qeth_qdio_out_buffer *buf,
+ enum iucv_tx_notify notification);
+static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf);
+static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
+ struct qeth_qdio_out_buffer *buf,
+ enum qeth_qdio_buffer_states newbufstate);
static inline const char *qeth_get_cardname(struct qeth_card *card)
@@ -199,7 +209,7 @@ static int qeth_alloc_buffer_pool(struct qeth_card *card)
QETH_CARD_TEXT(card, 5, "alocpool");
for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
- pool_entry = kmalloc(sizeof(*pool_entry), GFP_KERNEL);
+ pool_entry = kzalloc(sizeof(*pool_entry), GFP_KERNEL);
if (!pool_entry) {
qeth_free_buffer_pool(card);
return -ENOMEM;
@@ -239,6 +249,196 @@ int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt)
}
EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool);
+static inline int qeth_cq_init(struct qeth_card *card)
+{
+ int rc;
+
+ if (card->options.cq == QETH_CQ_ENABLED) {
+ QETH_DBF_TEXT(SETUP, 2, "cqinit");
+ memset(card->qdio.c_q->qdio_bufs, 0,
+ QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
+ card->qdio.c_q->next_buf_to_init = 127;
+ rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT,
+ card->qdio.no_in_queues - 1, 0,
+ 127);
+ if (rc) {
+ QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
+ goto out;
+ }
+ }
+ rc = 0;
+out:
+ return rc;
+}
+
+static inline int qeth_alloc_cq(struct qeth_card *card)
+{
+ int rc;
+
+ if (card->options.cq == QETH_CQ_ENABLED) {
+ int i;
+ struct qdio_outbuf_state *outbuf_states;
+
+ QETH_DBF_TEXT(SETUP, 2, "cqon");
+ card->qdio.c_q = kzalloc(sizeof(struct qeth_qdio_q),
+ GFP_KERNEL);
+ if (!card->qdio.c_q) {
+ rc = -1;
+ goto kmsg_out;
+ }
+ QETH_DBF_HEX(SETUP, 2, &card->qdio.c_q, sizeof(void *));
+
+ for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
+ card->qdio.c_q->bufs[i].buffer =
+ &card->qdio.c_q->qdio_bufs[i];
+ }
+
+ card->qdio.no_in_queues = 2;
+
+ card->qdio.out_bufstates = (struct qdio_outbuf_state *)
+ kzalloc(card->qdio.no_out_queues *
+ QDIO_MAX_BUFFERS_PER_Q *
+ sizeof(struct qdio_outbuf_state), GFP_KERNEL);
+ outbuf_states = card->qdio.out_bufstates;
+ if (outbuf_states == NULL) {
+ rc = -1;
+ goto free_cq_out;
+ }
+ for (i = 0; i < card->qdio.no_out_queues; ++i) {
+ card->qdio.out_qs[i]->bufstates = outbuf_states;
+ outbuf_states += QDIO_MAX_BUFFERS_PER_Q;
+ }
+ } else {
+ QETH_DBF_TEXT(SETUP, 2, "nocq");
+ card->qdio.c_q = NULL;
+ card->qdio.no_in_queues = 1;
+ }
+ QETH_DBF_TEXT_(SETUP, 2, "iqc%d", card->qdio.no_in_queues);
+ rc = 0;
+out:
+ return rc;
+free_cq_out:
+ kfree(card->qdio.c_q);
+ card->qdio.c_q = NULL;
+kmsg_out:
+ dev_err(&card->gdev->dev, "Failed to create completion queue\n");
+ goto out;
+}
+
+static inline void qeth_free_cq(struct qeth_card *card)
+{
+ if (card->qdio.c_q) {
+ --card->qdio.no_in_queues;
+ kfree(card->qdio.c_q);
+ card->qdio.c_q = NULL;
+ }
+ kfree(card->qdio.out_bufstates);
+ card->qdio.out_bufstates = NULL;
+}
+
+static inline enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15,
+ int delayed) {
+ enum iucv_tx_notify n;
+
+ switch (sbalf15) {
+ case 0:
+ n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK;
+ break;
+ case 4:
+ case 16:
+ case 17:
+ case 18:
+ n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE :
+ TX_NOTIFY_UNREACHABLE;
+ break;
+ default:
+ n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR :
+ TX_NOTIFY_GENERALERROR;
+ break;
+ }
+
+ return n;
+}
+
+static inline void qeth_cleanup_handled_pending(struct qeth_qdio_out_q *q,
+ int bidx, int forced_cleanup)
+{
+ if (q->bufs[bidx]->next_pending != NULL) {
+ struct qeth_qdio_out_buffer *head = q->bufs[bidx];
+ struct qeth_qdio_out_buffer *c = q->bufs[bidx]->next_pending;
+
+ while (c) {
+ if (forced_cleanup ||
+ atomic_read(&c->state) ==
+ QETH_QDIO_BUF_HANDLED_DELAYED) {
+ struct qeth_qdio_out_buffer *f = c;
+ QETH_CARD_TEXT(f->q->card, 5, "fp");
+ QETH_CARD_TEXT_(f->q->card, 5, "%lx", (long) f);
+ /* release here to avoid interleaving between
+ outbound tasklet and inbound tasklet
+ regarding notifications and lifecycle */
+ qeth_release_skbs(c);
+
+ c = f->next_pending;
+ BUG_ON(head->next_pending != f);
+ head->next_pending = c;
+ kmem_cache_free(qeth_qdio_outbuf_cache, f);
+ } else {
+ head = c;
+ c = c->next_pending;
+ }
+
+ }
+ }
+}
+
+
+static inline void qeth_qdio_handle_aob(struct qeth_card *card,
+ unsigned long phys_aob_addr) {
+ struct qaob *aob;
+ struct qeth_qdio_out_buffer *buffer;
+ enum iucv_tx_notify notification;
+
+ aob = (struct qaob *) phys_to_virt(phys_aob_addr);
+ QETH_CARD_TEXT(card, 5, "haob");
+ QETH_CARD_TEXT_(card, 5, "%lx", phys_aob_addr);
+ buffer = (struct qeth_qdio_out_buffer *) aob->user1;
+ QETH_CARD_TEXT_(card, 5, "%lx", aob->user1);
+
+ BUG_ON(buffer == NULL);
+
+ if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED,
+ QETH_QDIO_BUF_IN_CQ) == QETH_QDIO_BUF_PRIMED) {
+ notification = TX_NOTIFY_OK;
+ } else {
+ BUG_ON(atomic_read(&buffer->state) != QETH_QDIO_BUF_PENDING);
+
+ atomic_set(&buffer->state, QETH_QDIO_BUF_IN_CQ);
+ notification = TX_NOTIFY_DELAYED_OK;
+ }
+
+ if (aob->aorc != 0) {
+ QETH_CARD_TEXT_(card, 2, "aorc%02X", aob->aorc);
+ notification = qeth_compute_cq_notification(aob->aorc, 1);
+ }
+ qeth_notify_skbs(buffer->q, buffer, notification);
+
+ buffer->aob = NULL;
+ qeth_clear_output_buffer(buffer->q, buffer,
+ QETH_QDIO_BUF_HANDLED_DELAYED);
+ /* from here on: do not touch buffer anymore */
+ qdio_release_aob(aob);
+}
+
+static inline int qeth_is_cq(struct qeth_card *card, unsigned int queue)
+{
+ return card->options.cq == QETH_CQ_ENABLED &&
+ card->qdio.c_q != NULL &&
+ queue != 0 &&
+ queue == card->qdio.no_in_queues - 1;
+}
+
+
static int qeth_issue_next_read(struct qeth_card *card)
{
int rc;
@@ -589,7 +789,7 @@ static int qeth_setup_channel(struct qeth_channel *channel)
QETH_DBF_TEXT(SETUP, 2, "setupch");
for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
channel->iob[cnt].data =
- kmalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL);
+ kzalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL);
if (channel->iob[cnt].data == NULL)
break;
channel->iob[cnt].state = BUF_STATE_FREE;
@@ -681,6 +881,7 @@ EXPORT_SYMBOL_GPL(qeth_do_run_thread);
void qeth_schedule_recovery(struct qeth_card *card)
{
QETH_CARD_TEXT(card, 2, "startrec");
+ WARN_ON(1);
if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
schedule_work(&card->kernel_thread_starter);
}
@@ -883,22 +1084,60 @@ out:
return;
}
-static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
- struct qeth_qdio_out_buffer *buf)
+static void qeth_notify_skbs(struct qeth_qdio_out_q *q,
+ struct qeth_qdio_out_buffer *buf,
+ enum iucv_tx_notify notification)
{
- int i;
struct sk_buff *skb;
- /* is PCI flag set on buffer? */
- if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ)
- atomic_dec(&queue->set_pci_flags_count);
+ if (skb_queue_empty(&buf->skb_list))
+ goto out;
+ skb = skb_peek(&buf->skb_list);
+ while (skb) {
+ QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification);
+ QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb);
+ if (skb->protocol == ETH_P_AF_IUCV) {
+ if (skb->sk) {
+ struct iucv_sock *iucv = iucv_sk(skb->sk);
+ iucv->sk_txnotify(skb, notification);
+ }
+ }
+ if (skb_queue_is_last(&buf->skb_list, skb))
+ skb = NULL;
+ else
+ skb = skb_queue_next(&buf->skb_list, skb);
+ }
+out:
+ return;
+}
+
+static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf)
+{
+ struct sk_buff *skb;
skb = skb_dequeue(&buf->skb_list);
while (skb) {
+ QETH_CARD_TEXT(buf->q->card, 5, "skbr");
+ QETH_CARD_TEXT_(buf->q->card, 5, "%lx", (long) skb);
atomic_dec(&skb->users);
dev_kfree_skb_any(skb);
skb = skb_dequeue(&buf->skb_list);
}
+}
+
+static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
+ struct qeth_qdio_out_buffer *buf,
+ enum qeth_qdio_buffer_states newbufstate)
+{
+ int i;
+
+ /* is PCI flag set on buffer? */
+ if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ)
+ atomic_dec(&queue->set_pci_flags_count);
+
+ if (newbufstate == QETH_QDIO_BUF_EMPTY) {
+ qeth_release_skbs(buf);
+ }
for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
if (buf->buffer->element[i].addr && buf->is_header[i])
kmem_cache_free(qeth_core_header_cache,
@@ -912,21 +1151,36 @@ static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
buf->buffer->element[15].eflags = 0;
buf->buffer->element[15].sflags = 0;
buf->next_element_to_fill = 0;
- atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY);
+ atomic_set(&buf->state, newbufstate);
+}
+
+static void qeth_clear_outq_buffers(struct qeth_qdio_out_q *q, int free)
+{
+ int j;
+
+ for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
+ if (!q->bufs[j])
+ continue;
+ qeth_cleanup_handled_pending(q, j, free);
+ qeth_clear_output_buffer(q, q->bufs[j], QETH_QDIO_BUF_EMPTY);
+ if (free) {
+ kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]);
+ q->bufs[j] = NULL;
+ }
+ }
}
void qeth_clear_qdio_buffers(struct qeth_card *card)
{
- int i, j;
+ int i;
QETH_CARD_TEXT(card, 2, "clearqdbf");
/* clear outbound buffers to free skbs */
- for (i = 0; i < card->qdio.no_out_queues; ++i)
+ for (i = 0; i < card->qdio.no_out_queues; ++i) {
if (card->qdio.out_qs[i]) {
- for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
- qeth_clear_output_buffer(card->qdio.out_qs[i],
- &card->qdio.out_qs[i]->bufs[j]);
+ qeth_clear_outq_buffers(card->qdio.out_qs[i], 0);
}
+ }
}
EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers);
@@ -950,6 +1204,11 @@ static void qeth_free_qdio_buffers(struct qeth_card *card)
if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
QETH_QDIO_UNINITIALIZED)
return;
+
+ qeth_free_cq(card);
+ cancel_delayed_work_sync(&card->buffer_reclaim_work);
+ for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
+ kfree_skb(card->qdio.in_q->bufs[j].rx_skb);
kfree(card->qdio.in_q);
card->qdio.in_q = NULL;
/* inbound buffer pool */
@@ -957,9 +1216,7 @@ static void qeth_free_qdio_buffers(struct qeth_card *card)
/* free outbound qdio_qs */
if (card->qdio.out_qs) {
for (i = 0; i < card->qdio.no_out_queues; ++i) {
- for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
- qeth_clear_output_buffer(card->qdio.out_qs[i],
- &card->qdio.out_qs[i]->bufs[j]);
+ qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
kfree(card->qdio.out_qs[i]);
}
kfree(card->qdio.out_qs);
@@ -995,27 +1252,29 @@ static void qeth_get_channel_path_desc(struct qeth_card *card)
ccwdev = card->data.ccwdev;
chp_dsc = (struct channelPath_dsc *)ccw_device_get_chp_desc(ccwdev, 0);
if (chp_dsc != NULL) {
- /* CHPP field bit 6 == 1 -> single queue */
- if ((chp_dsc->chpp & 0x02) == 0x02) {
- if ((atomic_read(&card->qdio.state) !=
- QETH_QDIO_UNINITIALIZED) &&
- (card->qdio.no_out_queues == 4))
- /* change from 4 to 1 outbound queues */
- qeth_free_qdio_buffers(card);
- card->qdio.no_out_queues = 1;
- if (card->qdio.default_out_queue != 0)
- dev_info(&card->gdev->dev,
+ if (card->info.type != QETH_CARD_TYPE_IQD) {
+ /* CHPP field bit 6 == 1 -> single queue */
+ if ((chp_dsc->chpp & 0x02) == 0x02) {
+ if ((atomic_read(&card->qdio.state) !=
+ QETH_QDIO_UNINITIALIZED) &&
+ (card->qdio.no_out_queues == 4))
+ /* change from 4 to 1 outbound queues */
+ qeth_free_qdio_buffers(card);
+ card->qdio.no_out_queues = 1;
+ if (card->qdio.default_out_queue != 0)
+ dev_info(&card->gdev->dev,
"Priority Queueing not supported\n");
- card->qdio.default_out_queue = 0;
- } else {
- if ((atomic_read(&card->qdio.state) !=
- QETH_QDIO_UNINITIALIZED) &&
- (card->qdio.no_out_queues == 1)) {
- /* change from 1 to 4 outbound queues */
- qeth_free_qdio_buffers(card);
- card->qdio.default_out_queue = 2;
+ card->qdio.default_out_queue = 0;
+ } else {
+ if ((atomic_read(&card->qdio.state) !=
+ QETH_QDIO_UNINITIALIZED) &&
+ (card->qdio.no_out_queues == 1)) {
+ /* change from 1 to 4 outbound queues */
+ qeth_free_qdio_buffers(card);
+ card->qdio.default_out_queue = 2;
+ }
+ card->qdio.no_out_queues = 4;
}
- card->qdio.no_out_queues = 4;
}
card->info.func_level = 0x4100 + chp_dsc->desc;
kfree(chp_dsc);
@@ -1051,6 +1310,7 @@ static void qeth_set_intial_options(struct qeth_card *card)
card->options.performance_stats = 0;
card->options.rx_sg_cb = QETH_RX_SG_CB;
card->options.isolation = ISOLATION_MODE_NONE;
+ card->options.cq = QETH_CQ_DISABLED;
}
static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
@@ -1119,6 +1379,7 @@ static int qeth_setup_card(struct qeth_card *card)
card->ipato.invert6 = 0;
/* init QDIO stuff */
qeth_init_qdio_info(card);
+ INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
return 0;
}
@@ -1140,7 +1401,7 @@ static struct qeth_card *qeth_alloc_card(void)
if (!card)
goto out;
QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
- card->ip_tbd_list = kmalloc(sizeof(struct list_head), GFP_KERNEL);
+ card->ip_tbd_list = kzalloc(sizeof(struct list_head), GFP_KERNEL);
if (!card->ip_tbd_list) {
QETH_DBF_TEXT(SETUP, 0, "iptbdnom");
goto out_card;
@@ -1180,6 +1441,7 @@ static int qeth_determine_card_type(struct qeth_card *card)
card->info.type = known_devices[i][QETH_DEV_MODEL_IND];
card->qdio.no_out_queues =
known_devices[i][QETH_QUEUE_NO_IND];
+ card->qdio.no_in_queues = 1;
card->info.is_multicast_different =
known_devices[i][QETH_MULTICAST_IND];
qeth_get_channel_path_desc(card);
@@ -2027,6 +2289,37 @@ static int qeth_ulp_setup(struct qeth_card *card)
return rc;
}
+static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx)
+{
+ int rc;
+ struct qeth_qdio_out_buffer *newbuf;
+
+ rc = 0;
+ newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC);
+ if (!newbuf) {
+ rc = -ENOMEM;
+ goto out;
+ }
+ newbuf->buffer = &q->qdio_bufs[bidx];
+ skb_queue_head_init(&newbuf->skb_list);
+ lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
+ newbuf->q = q;
+ newbuf->aob = NULL;
+ newbuf->next_pending = q->bufs[bidx];
+ atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
+ q->bufs[bidx] = newbuf;
+ if (q->bufstates) {
+ q->bufstates[bidx].user = newbuf;
+ QETH_CARD_TEXT_(q->card, 2, "nbs%d", bidx);
+ QETH_CARD_TEXT_(q->card, 2, "%lx", (long) newbuf);
+ QETH_CARD_TEXT_(q->card, 2, "%lx",
+ (long) newbuf->next_pending);
+ }
+out:
+ return rc;
+}
+
+
static int qeth_alloc_qdio_buffers(struct qeth_card *card)
{
int i, j;
@@ -2037,52 +2330,63 @@ static int qeth_alloc_qdio_buffers(struct qeth_card *card)
QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
return 0;
- card->qdio.in_q = kmalloc(sizeof(struct qeth_qdio_q),
- GFP_KERNEL);
+ card->qdio.in_q = kzalloc(sizeof(struct qeth_qdio_q),
+ GFP_KERNEL);
if (!card->qdio.in_q)
goto out_nomem;
QETH_DBF_TEXT(SETUP, 2, "inq");
QETH_DBF_HEX(SETUP, 2, &card->qdio.in_q, sizeof(void *));
memset(card->qdio.in_q, 0, sizeof(struct qeth_qdio_q));
/* give inbound qeth_qdio_buffers their qdio_buffers */
- for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
+ for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
card->qdio.in_q->bufs[i].buffer =
&card->qdio.in_q->qdio_bufs[i];
+ card->qdio.in_q->bufs[i].rx_skb = NULL;
+ }
/* inbound buffer pool */
if (qeth_alloc_buffer_pool(card))
goto out_freeinq;
+
/* outbound */
card->qdio.out_qs =
- kmalloc(card->qdio.no_out_queues *
+ kzalloc(card->qdio.no_out_queues *
sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
if (!card->qdio.out_qs)
goto out_freepool;
for (i = 0; i < card->qdio.no_out_queues; ++i) {
- card->qdio.out_qs[i] = kmalloc(sizeof(struct qeth_qdio_out_q),
+ card->qdio.out_qs[i] = kzalloc(sizeof(struct qeth_qdio_out_q),
GFP_KERNEL);
if (!card->qdio.out_qs[i])
goto out_freeoutq;
QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
- memset(card->qdio.out_qs[i], 0, sizeof(struct qeth_qdio_out_q));
card->qdio.out_qs[i]->queue_no = i;
/* give outbound qeth_qdio_buffers their qdio_buffers */
for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
- card->qdio.out_qs[i]->bufs[j].buffer =
- &card->qdio.out_qs[i]->qdio_bufs[j];
- skb_queue_head_init(&card->qdio.out_qs[i]->bufs[j].
- skb_list);
- lockdep_set_class(
- &card->qdio.out_qs[i]->bufs[j].skb_list.lock,
- &qdio_out_skb_queue_key);
- INIT_LIST_HEAD(&card->qdio.out_qs[i]->bufs[j].ctx_list);
+ BUG_ON(card->qdio.out_qs[i]->bufs[j] != NULL);
+ if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j))
+ goto out_freeoutqbufs;
}
}
+
+ /* completion */
+ if (qeth_alloc_cq(card))
+ goto out_freeoutq;
+
return 0;
+out_freeoutqbufs:
+ while (j > 0) {
+ --j;
+ kmem_cache_free(qeth_qdio_outbuf_cache,
+ card->qdio.out_qs[i]->bufs[j]);
+ card->qdio.out_qs[i]->bufs[j] = NULL;
+ }
out_freeoutq:
- while (i > 0)
+ while (i > 0) {
kfree(card->qdio.out_qs[--i]);
+ qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
+ }
kfree(card->qdio.out_qs);
card->qdio.out_qs = NULL;
out_freepool:
@@ -2353,6 +2657,12 @@ static int qeth_init_input_buffer(struct qeth_card *card,
struct qeth_buffer_pool_entry *pool_entry;
int i;
+ if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
+ buf->rx_skb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
+ if (!buf->rx_skb)
+ return 1;
+ }
+
pool_entry = qeth_find_free_buffer_pool_entry(card);
if (!pool_entry)
return 1;
@@ -2399,13 +2709,21 @@ int qeth_init_qdio_queues(struct qeth_card *card)
QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
return rc;
}
+
+ /* completion */
+ rc = qeth_cq_init(card);
+ if (rc) {
+ return rc;
+ }
+
/* outbound queue */
for (i = 0; i < card->qdio.no_out_queues; ++i) {
memset(card->qdio.out_qs[i]->qdio_bufs, 0,
QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
qeth_clear_output_buffer(card->qdio.out_qs[i],
- &card->qdio.out_qs[i]->bufs[j]);
+ card->qdio.out_qs[i]->bufs[j],
+ QETH_QDIO_BUF_EMPTY);
}
card->qdio.out_qs[i]->card = card;
card->qdio.out_qs[i]->next_buf_to_fill = 0;
@@ -2734,9 +3052,19 @@ int qeth_check_qdio_errors(struct qeth_card *card, struct qdio_buffer *buf,
}
EXPORT_SYMBOL_GPL(qeth_check_qdio_errors);
+void qeth_buffer_reclaim_work(struct work_struct *work)
+{
+ struct qeth_card *card = container_of(work, struct qeth_card,
+ buffer_reclaim_work.work);
+
+ QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index);
+ qeth_queue_input_buffer(card, card->reclaim_index);
+}
+
void qeth_queue_input_buffer(struct qeth_card *card, int index)
{
struct qeth_qdio_q *queue = card->qdio.in_q;
+ struct list_head *lh;
int count;
int i;
int rc;
@@ -2768,6 +3096,20 @@ void qeth_queue_input_buffer(struct qeth_card *card, int index)
atomic_add_unless(&card->force_alloc_skb, -1, 0);
}
+ if (!count) {
+ i = 0;
+ list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
+ i++;
+ if (i == card->qdio.in_buf_pool.buf_count) {
+ QETH_CARD_TEXT(card, 2, "qsarbw");
+ card->reclaim_index = index;
+ schedule_delayed_work(
+ &card->buffer_reclaim_work,
+ QETH_RECLAIM_WORK_TIME);
+ }
+ return;
+ }
+
/*
* according to old code it should be avoided to requeue all
* 128 buffers in order to benefit from PCI avoidance.
@@ -2787,8 +3129,6 @@ void qeth_queue_input_buffer(struct qeth_card *card, int index)
qeth_get_micros() -
card->perf_stats.inbound_do_qdio_start_time;
if (rc) {
- dev_warn(&card->gdev->dev,
- "QDIO reported an error, rc=%i\n", rc);
QETH_CARD_TEXT(card, 2, "qinberr");
}
queue->next_buf_to_init = (queue->next_buf_to_init + count) %
@@ -2862,12 +3202,12 @@ static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
queue->card->perf_stats.sc_p_dp++;
queue->do_pack = 0;
/* flush packing buffers */
- buffer = &queue->bufs[queue->next_buf_to_fill];
+ buffer = queue->bufs[queue->next_buf_to_fill];
if ((atomic_read(&buffer->state) ==
QETH_QDIO_BUF_EMPTY) &&
(buffer->next_element_to_fill > 0)) {
atomic_set(&buffer->state,
- QETH_QDIO_BUF_PRIMED);
+ QETH_QDIO_BUF_PRIMED);
flush_count++;
queue->next_buf_to_fill =
(queue->next_buf_to_fill + 1) %
@@ -2878,6 +3218,7 @@ static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
return flush_count;
}
+
/*
* Called to flush a packing buffer if no more pci flags are on the queue.
* Checks if there is a packing buffer and prepares it to be flushed.
@@ -2887,7 +3228,7 @@ static int qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue)
{
struct qeth_qdio_out_buffer *buffer;
- buffer = &queue->bufs[queue->next_buf_to_fill];
+ buffer = queue->bufs[queue->next_buf_to_fill];
if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
(buffer->next_element_to_fill > 0)) {
/* it's a packing buffer */
@@ -2908,10 +3249,14 @@ static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
unsigned int qdio_flags;
for (i = index; i < index + count; ++i) {
- buf = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q];
+ int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
+ buf = queue->bufs[bidx];
buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
SBAL_EFLAGS_LAST_ENTRY;
+ if (queue->bufstates)
+ queue->bufstates[bidx].user = buf;
+
if (queue->card->info.type == QETH_CARD_TYPE_IQD)
continue;
@@ -2963,6 +3308,9 @@ static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
if (rc == QDIO_ERROR_SIGA_TARGET)
return;
QETH_CARD_TEXT(queue->card, 2, "flushbuf");
+ QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
+ QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
+ QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
/* this must not happen under normal circumstances. if it
@@ -3024,14 +3372,120 @@ void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue,
}
EXPORT_SYMBOL_GPL(qeth_qdio_start_poll);
+int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
+{
+ int rc;
+
+ if (card->options.cq == QETH_CQ_NOTAVAILABLE) {
+ rc = -1;
+ goto out;
+ } else {
+ if (card->options.cq == cq) {
+ rc = 0;
+ goto out;
+ }
+
+ if (card->state != CARD_STATE_DOWN &&
+ card->state != CARD_STATE_RECOVER) {
+ rc = -1;
+ goto out;
+ }
+
+ qeth_free_qdio_buffers(card);
+ card->options.cq = cq;
+ rc = 0;
+ }
+out:
+ return rc;
+
+}
+EXPORT_SYMBOL_GPL(qeth_configure_cq);
+
+
+static void qeth_qdio_cq_handler(struct qeth_card *card,
+ unsigned int qdio_err,
+ unsigned int queue, int first_element, int count) {
+ struct qeth_qdio_q *cq = card->qdio.c_q;
+ int i;
+ int rc;
+
+ if (!qeth_is_cq(card, queue))
+ goto out;
+
+ QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
+ QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
+ QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
+
+ if (qdio_err) {
+ netif_stop_queue(card->dev);
+ qeth_schedule_recovery(card);
+ goto out;
+ }
+
+ if (card->options.performance_stats) {
+ card->perf_stats.cq_cnt++;
+ card->perf_stats.cq_start_time = qeth_get_micros();
+ }
+
+ for (i = first_element; i < first_element + count; ++i) {
+ int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
+ struct qdio_buffer *buffer = &cq->qdio_bufs[bidx];
+ int e;
+
+ e = 0;
+ while (buffer->element[e].addr) {
+ unsigned long phys_aob_addr;
+
+ phys_aob_addr = (unsigned long) buffer->element[e].addr;
+ qeth_qdio_handle_aob(card, phys_aob_addr);
+ buffer->element[e].addr = NULL;
+ buffer->element[e].eflags = 0;
+ buffer->element[e].sflags = 0;
+ buffer->element[e].length = 0;
+
+ ++e;
+ }
+
+ buffer->element[15].eflags = 0;
+ buffer->element[15].sflags = 0;
+ }
+ rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue,
+ card->qdio.c_q->next_buf_to_init,
+ count);
+ if (rc) {
+ dev_warn(&card->gdev->dev,
+ "QDIO reported an error, rc=%i\n", rc);
+ QETH_CARD_TEXT(card, 2, "qcqherr");
+ }
+ card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init
+ + count) % QDIO_MAX_BUFFERS_PER_Q;
+
+ netif_wake_queue(card->dev);
+
+ if (card->options.performance_stats) {
+ int delta_t = qeth_get_micros();
+ delta_t -= card->perf_stats.cq_start_time;
+ card->perf_stats.cq_time += delta_t;
+ }
+out:
+ return;
+}
+
void qeth_qdio_input_handler(struct ccw_device *ccwdev, unsigned int qdio_err,
- unsigned int queue, int first_element, int count,
+ unsigned int queue, int first_elem, int count,
unsigned long card_ptr)
{
struct qeth_card *card = (struct qeth_card *)card_ptr;
- if (qdio_err)
+ QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
+ QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
+
+ if (qeth_is_cq(card, queue))
+ qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count);
+ else if (qdio_err)
qeth_schedule_recovery(card);
+
+
}
EXPORT_SYMBOL_GPL(qeth_qdio_input_handler);
@@ -3057,9 +3511,45 @@ void qeth_qdio_output_handler(struct ccw_device *ccwdev,
qeth_get_micros();
}
for (i = first_element; i < (first_element + count); ++i) {
- buffer = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q];
+ int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
+ buffer = queue->bufs[bidx];
qeth_handle_send_error(card, buffer, qdio_error);
- qeth_clear_output_buffer(queue, buffer);
+
+ if (queue->bufstates &&
+ (queue->bufstates[bidx].flags &
+ QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) {
+ BUG_ON(card->options.cq != QETH_CQ_ENABLED);
+
+ if (atomic_cmpxchg(&buffer->state,
+ QETH_QDIO_BUF_PRIMED,
+ QETH_QDIO_BUF_PENDING) ==
+ QETH_QDIO_BUF_PRIMED) {
+ qeth_notify_skbs(queue, buffer,
+ TX_NOTIFY_PENDING);
+ }
+ buffer->aob = queue->bufstates[bidx].aob;
+ QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx);
+ QETH_CARD_TEXT(queue->card, 5, "aob");
+ QETH_CARD_TEXT_(queue->card, 5, "%lx",
+ virt_to_phys(buffer->aob));
+ BUG_ON(bidx < 0 || bidx >= QDIO_MAX_BUFFERS_PER_Q);
+ if (qeth_init_qdio_out_buf(queue, bidx)) {
+ QETH_CARD_TEXT(card, 2, "outofbuf");
+ qeth_schedule_recovery(card);
+ }
+ } else {
+ if (card->options.cq == QETH_CQ_ENABLED) {
+ enum iucv_tx_notify n;
+
+ n = qeth_compute_cq_notification(
+ buffer->buffer->element[15].sflags, 0);
+ qeth_notify_skbs(queue, buffer, n);
+ }
+
+ qeth_clear_output_buffer(queue, buffer,
+ QETH_QDIO_BUF_EMPTY);
+ }
+ qeth_cleanup_handled_pending(queue, bidx, 0);
}
atomic_sub(count, &queue->used_buffers);
/* check if we need to do something on this outbound queue */
@@ -3204,7 +3694,8 @@ static inline void __qeth_fill_buffer(struct sk_buff *skb,
for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
frag = &skb_shinfo(skb)->frags[cnt];
- buffer->element[element].addr = (char *)page_to_phys(frag->page)
+ buffer->element[element].addr = (char *)
+ page_to_phys(skb_frag_page(frag))
+ frag->page_offset;
buffer->element[element].length = frag->size;
buffer->element[element].eflags = SBAL_EFLAGS_MIDDLE_FRAG;
@@ -3291,7 +3782,7 @@ int qeth_do_send_packet_fast(struct qeth_card *card,
QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
/* ... now we've got the queue */
index = queue->next_buf_to_fill;
- buffer = &queue->bufs[queue->next_buf_to_fill];
+ buffer = queue->bufs[queue->next_buf_to_fill];
/*
* check if buffer is empty to make sure that we do not 'overtake'
* ourselves and try to fill a buffer that is already primed
@@ -3325,7 +3816,7 @@ int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
start_index = queue->next_buf_to_fill;
- buffer = &queue->bufs[queue->next_buf_to_fill];
+ buffer = queue->bufs[queue->next_buf_to_fill];
/*
* check if buffer is empty to make sure that we do not 'overtake'
* ourselves and try to fill a buffer that is already primed
@@ -3347,7 +3838,7 @@ int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
queue->next_buf_to_fill =
(queue->next_buf_to_fill + 1) %
QDIO_MAX_BUFFERS_PER_Q;
- buffer = &queue->bufs[queue->next_buf_to_fill];
+ buffer = queue->bufs[queue->next_buf_to_fill];
/* we did a step forward, so check buffer state
* again */
if (atomic_read(&buffer->state) !=
@@ -3925,6 +4416,20 @@ static void qeth_determine_capabilities(struct qeth_card *card)
if (rc)
QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
+ QETH_DBF_TEXT_(SETUP, 2, "qfmt%d", card->ssqd.qfmt);
+ QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac1);
+ QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac3);
+ QETH_DBF_TEXT_(SETUP, 2, "icnt%d", card->ssqd.icnt);
+ if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
+ ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
+ ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
+ dev_info(&card->gdev->dev,
+ "Completion Queueing supported\n");
+ } else {
+ card->options.cq = QETH_CQ_NOTAVAILABLE;
+ }
+
+
out_offline:
if (ddev_offline == 1)
ccw_device_set_offline(ddev);
@@ -3932,11 +4437,30 @@ out:
return;
}
+static inline void qeth_qdio_establish_cq(struct qeth_card *card,
+ struct qdio_buffer **in_sbal_ptrs,
+ void (**queue_start_poll) (struct ccw_device *, int, unsigned long)) {
+ int i;
+
+ if (card->options.cq == QETH_CQ_ENABLED) {
+ int offset = QDIO_MAX_BUFFERS_PER_Q *
+ (card->qdio.no_in_queues - 1);
+ i = QDIO_MAX_BUFFERS_PER_Q * (card->qdio.no_in_queues - 1);
+ for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
+ in_sbal_ptrs[offset + i] = (struct qdio_buffer *)
+ virt_to_phys(card->qdio.c_q->bufs[i].buffer);
+ }
+
+ queue_start_poll[card->qdio.no_in_queues - 1] = NULL;
+ }
+}
+
static int qeth_qdio_establish(struct qeth_card *card)
{
struct qdio_initialize init_data;
char *qib_param_field;
struct qdio_buffer **in_sbal_ptrs;
+ void (**queue_start_poll) (struct ccw_device *, int, unsigned long);
struct qdio_buffer **out_sbal_ptrs;
int i, j, k;
int rc = 0;
@@ -3945,34 +4469,48 @@ static int qeth_qdio_establish(struct qeth_card *card)
qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
GFP_KERNEL);
- if (!qib_param_field)
- return -ENOMEM;
+ if (!qib_param_field) {
+ rc = -ENOMEM;
+ goto out_free_nothing;
+ }
qeth_create_qib_param_field(card, qib_param_field);
qeth_create_qib_param_field_blkt(card, qib_param_field);
- in_sbal_ptrs = kmalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
+ in_sbal_ptrs = kzalloc(card->qdio.no_in_queues *
+ QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
GFP_KERNEL);
if (!in_sbal_ptrs) {
- kfree(qib_param_field);
- return -ENOMEM;
+ rc = -ENOMEM;
+ goto out_free_qib_param;
}
- for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
+ for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
in_sbal_ptrs[i] = (struct qdio_buffer *)
virt_to_phys(card->qdio.in_q->bufs[i].buffer);
+ }
+
+ queue_start_poll = kzalloc(sizeof(void *) * card->qdio.no_in_queues,
+ GFP_KERNEL);
+ if (!queue_start_poll) {
+ rc = -ENOMEM;
+ goto out_free_in_sbals;
+ }
+ for (i = 0; i < card->qdio.no_in_queues; ++i)
+ queue_start_poll[i] = card->discipline.start_poll;
+
+ qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll);
out_sbal_ptrs =
- kmalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
+ kzalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
sizeof(void *), GFP_KERNEL);
if (!out_sbal_ptrs) {
- kfree(in_sbal_ptrs);
- kfree(qib_param_field);
- return -ENOMEM;
+ rc = -ENOMEM;
+ goto out_free_queue_start_poll;
}
for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
- card->qdio.out_qs[i]->bufs[j].buffer);
+ card->qdio.out_qs[i]->bufs[j]->buffer);
}
memset(&init_data, 0, sizeof(struct qdio_initialize));
@@ -3980,14 +4518,15 @@ static int qeth_qdio_establish(struct qeth_card *card)
init_data.q_format = qeth_get_qdio_q_format(card);
init_data.qib_param_field_format = 0;
init_data.qib_param_field = qib_param_field;
- init_data.no_input_qs = 1;
+ init_data.no_input_qs = card->qdio.no_in_queues;
init_data.no_output_qs = card->qdio.no_out_queues;
init_data.input_handler = card->discipline.input_handler;
init_data.output_handler = card->discipline.output_handler;
- init_data.queue_start_poll = card->discipline.start_poll;
+ init_data.queue_start_poll = queue_start_poll;
init_data.int_parm = (unsigned long) card;
init_data.input_sbal_addr_array = (void **) in_sbal_ptrs;
init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
+ init_data.output_sbal_state_array = card->qdio.out_bufstates;
init_data.scan_threshold =
(card->info.type == QETH_CARD_TYPE_IQD) ? 8 : 32;
@@ -4004,10 +4543,26 @@ static int qeth_qdio_establish(struct qeth_card *card)
qdio_free(CARD_DDEV(card));
}
}
+
+ switch (card->options.cq) {
+ case QETH_CQ_ENABLED:
+ dev_info(&card->gdev->dev, "Completion Queue support enabled");
+ break;
+ case QETH_CQ_DISABLED:
+ dev_info(&card->gdev->dev, "Completion Queue support disabled");
+ break;
+ default:
+ break;
+ }
out:
kfree(out_sbal_ptrs);
+out_free_queue_start_poll:
+ kfree(queue_start_poll);
+out_free_in_sbals:
kfree(in_sbal_ptrs);
+out_free_qib_param:
kfree(qib_param_field);
+out_free_nothing:
return rc;
}
@@ -4144,29 +4699,36 @@ out:
}
EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
-static inline int qeth_create_skb_frag(struct qdio_buffer_element *element,
+static inline int qeth_create_skb_frag(struct qeth_qdio_buffer *qethbuffer,
+ struct qdio_buffer_element *element,
struct sk_buff **pskb, int offset, int *pfrag, int data_len)
{
struct page *page = virt_to_page(element->addr);
if (*pskb == NULL) {
- /* the upper protocol layers assume that there is data in the
- * skb itself. Copy a small amount (64 bytes) to make them
- * happy. */
- *pskb = dev_alloc_skb(64 + ETH_HLEN);
- if (!(*pskb))
- return -ENOMEM;
+ if (qethbuffer->rx_skb) {
+ /* only if qeth_card.options.cq == QETH_CQ_ENABLED */
+ *pskb = qethbuffer->rx_skb;
+ qethbuffer->rx_skb = NULL;
+ } else {
+ *pskb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
+ if (!(*pskb))
+ return -ENOMEM;
+ }
+
skb_reserve(*pskb, ETH_HLEN);
- if (data_len <= 64) {
+ if (data_len <= QETH_RX_PULL_LEN) {
memcpy(skb_put(*pskb, data_len), element->addr + offset,
data_len);
} else {
get_page(page);
- memcpy(skb_put(*pskb, 64), element->addr + offset, 64);
- skb_fill_page_desc(*pskb, *pfrag, page, offset + 64,
- data_len - 64);
- (*pskb)->data_len += data_len - 64;
- (*pskb)->len += data_len - 64;
- (*pskb)->truesize += data_len - 64;
+ memcpy(skb_put(*pskb, QETH_RX_PULL_LEN),
+ element->addr + offset, QETH_RX_PULL_LEN);
+ skb_fill_page_desc(*pskb, *pfrag, page,
+ offset + QETH_RX_PULL_LEN,
+ data_len - QETH_RX_PULL_LEN);
+ (*pskb)->data_len += data_len - QETH_RX_PULL_LEN;
+ (*pskb)->len += data_len - QETH_RX_PULL_LEN;
+ (*pskb)->truesize += data_len - QETH_RX_PULL_LEN;
(*pfrag)++;
}
} else {
@@ -4177,15 +4739,18 @@ static inline int qeth_create_skb_frag(struct qdio_buffer_element *element,
(*pskb)->truesize += data_len;
(*pfrag)++;
}
+
+
return 0;
}
struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
- struct qdio_buffer *buffer,
+ struct qeth_qdio_buffer *qethbuffer,
struct qdio_buffer_element **__element, int *__offset,
struct qeth_hdr **hdr)
{
struct qdio_buffer_element *element = *__element;
+ struct qdio_buffer *buffer = qethbuffer->buffer;
int offset = *__offset;
struct sk_buff *skb = NULL;
int skb_len = 0;
@@ -4230,9 +4795,10 @@ struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
if (!skb_len)
return NULL;
- if ((skb_len >= card->options.rx_sg_cb) &&
- (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
- (!atomic_read(&card->force_alloc_skb))) {
+ if (((skb_len >= card->options.rx_sg_cb) &&
+ (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
+ (!atomic_read(&card->force_alloc_skb))) ||
+ (card->options.cq == QETH_CQ_ENABLED)) {
use_rx_sg = 1;
} else {
skb = dev_alloc_skb(skb_len + headroom);
@@ -4247,8 +4813,8 @@ struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
data_len = min(skb_len, (int)(element->length - offset));
if (data_len) {
if (use_rx_sg) {
- if (qeth_create_skb_frag(element, &skb, offset,
- &frag, data_len))
+ if (qeth_create_skb_frag(qethbuffer, element,
+ &skb, offset, &frag, data_len))
goto no_mem;
} else {
memcpy(skb_put(skb, data_len), data_ptr,
@@ -4650,6 +5216,8 @@ static struct {
{"tx do_QDIO count"},
{"tx csum"},
{"tx lin"},
+ {"cq handler count"},
+ {"cq handler time"}
};
int qeth_core_get_sset_count(struct net_device *dev, int stringset)
@@ -4708,6 +5276,8 @@ void qeth_core_get_ethtool_stats(struct net_device *dev,
data[32] = card->perf_stats.outbound_do_qdio_cnt;
data[33] = card->perf_stats.tx_csum;
data[34] = card->perf_stats.tx_lin;
+ data[35] = card->perf_stats.cq_cnt;
+ data[36] = card->perf_stats.cq_time;
}
EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
@@ -4866,7 +5436,16 @@ static int __init qeth_core_init(void)
goto slab_err;
}
+ qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
+ sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
+ if (!qeth_qdio_outbuf_cache) {
+ rc = -ENOMEM;
+ goto cqslab_err;
+ }
+
return 0;
+cqslab_err:
+ kmem_cache_destroy(qeth_core_header_cache);
slab_err:
root_device_unregister(qeth_core_root_dev);
register_err:
@@ -4891,6 +5470,7 @@ static void __exit qeth_core_exit(void)
&driver_attr_group);
ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
ccw_driver_unregister(&qeth_ccw_driver);
+ kmem_cache_destroy(qeth_qdio_outbuf_cache);
kmem_cache_destroy(qeth_core_header_cache);
qeth_unregister_dbf_views();
pr_info("core functions removed\n");
diff --git a/drivers/s390/net/qeth_l2_main.c b/drivers/s390/net/qeth_l2_main.c
index b70b47fbd6c..a21ae3d549d 100644
--- a/drivers/s390/net/qeth_l2_main.c
+++ b/drivers/s390/net/qeth_l2_main.c
@@ -409,7 +409,7 @@ static int qeth_l2_process_inbound_buffer(struct qeth_card *card,
BUG_ON(!budget);
while (budget) {
skb = qeth_core_get_next_skb(card,
- card->qdio.in_q->bufs[card->rx.b_index].buffer,
+ &card->qdio.in_q->bufs[card->rx.b_index],
&card->rx.b_element, &card->rx.e_offset, &hdr);
if (!skb) {
*done = 1;
@@ -925,7 +925,7 @@ static const struct net_device_ops qeth_l2_netdev_ops = {
.ndo_get_stats = qeth_get_stats,
.ndo_start_xmit = qeth_l2_hard_start_xmit,
.ndo_validate_addr = eth_validate_addr,
- .ndo_set_multicast_list = qeth_l2_set_multicast_list,
+ .ndo_set_rx_mode = qeth_l2_set_multicast_list,
.ndo_do_ioctl = qeth_l2_do_ioctl,
.ndo_set_mac_address = qeth_l2_set_mac_address,
.ndo_change_mtu = qeth_change_mtu,
diff --git a/drivers/s390/net/qeth_l3.h b/drivers/s390/net/qeth_l3.h
index 14a43aeb0c2..e367315a63f 100644
--- a/drivers/s390/net/qeth_l3.h
+++ b/drivers/s390/net/qeth_l3.h
@@ -63,5 +63,9 @@ int qeth_l3_add_rxip(struct qeth_card *, enum qeth_prot_versions, const u8 *);
void qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions,
const u8 *);
int qeth_l3_is_addr_covered_by_ipato(struct qeth_card *, struct qeth_ipaddr *);
+struct qeth_ipaddr *qeth_l3_get_addr_buffer(enum qeth_prot_versions);
+int qeth_l3_add_ip(struct qeth_card *, struct qeth_ipaddr *);
+int qeth_l3_delete_ip(struct qeth_card *, struct qeth_ipaddr *);
+void qeth_l3_set_ip_addr_list(struct qeth_card *);
#endif /* __QETH_L3_H__ */
diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c
index fafb8c29954..ce735204d31 100644
--- a/drivers/s390/net/qeth_l3_main.c
+++ b/drivers/s390/net/qeth_l3_main.c
@@ -29,6 +29,7 @@
#include <net/ip.h>
#include <net/arp.h>
#include <net/ip6_checksum.h>
+#include <net/iucv/af_iucv.h>
#include "qeth_l3.h"
@@ -267,7 +268,7 @@ static int __qeth_l3_insert_ip_todo(struct qeth_card *card,
}
}
-static int qeth_l3_delete_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
+int qeth_l3_delete_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
{
unsigned long flags;
int rc = 0;
@@ -286,7 +287,7 @@ static int qeth_l3_delete_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
return rc;
}
-static int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
+int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
{
unsigned long flags;
int rc = 0;
@@ -305,7 +306,7 @@ static int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
}
-static struct qeth_ipaddr *qeth_l3_get_addr_buffer(
+struct qeth_ipaddr *qeth_l3_get_addr_buffer(
enum qeth_prot_versions prot)
{
struct qeth_ipaddr *addr;
@@ -421,7 +422,7 @@ again:
list_splice(&fail_list, &card->ip_list);
}
-static void qeth_l3_set_ip_addr_list(struct qeth_card *card)
+void qeth_l3_set_ip_addr_list(struct qeth_card *card)
{
struct list_head *tbd_list;
struct qeth_ipaddr *todo, *addr;
@@ -438,7 +439,7 @@ static void qeth_l3_set_ip_addr_list(struct qeth_card *card)
spin_lock_irqsave(&card->ip_lock, flags);
tbd_list = card->ip_tbd_list;
- card->ip_tbd_list = kmalloc(sizeof(struct list_head), GFP_ATOMIC);
+ card->ip_tbd_list = kzalloc(sizeof(struct list_head), GFP_ATOMIC);
if (!card->ip_tbd_list) {
QETH_CARD_TEXT(card, 0, "silnomem");
card->ip_tbd_list = tbd_list;
@@ -1993,12 +1994,13 @@ static int qeth_l3_process_inbound_buffer(struct qeth_card *card,
__u16 vlan_tag = 0;
int is_vlan;
unsigned int len;
+ __u16 magic;
*done = 0;
BUG_ON(!budget);
while (budget) {
skb = qeth_core_get_next_skb(card,
- card->qdio.in_q->bufs[card->rx.b_index].buffer,
+ &card->qdio.in_q->bufs[card->rx.b_index],
&card->rx.b_element, &card->rx.e_offset, &hdr);
if (!skb) {
*done = 1;
@@ -2007,12 +2009,26 @@ static int qeth_l3_process_inbound_buffer(struct qeth_card *card,
skb->dev = card->dev;
switch (hdr->hdr.l3.id) {
case QETH_HEADER_TYPE_LAYER3:
- is_vlan = qeth_l3_rebuild_skb(card, skb, hdr,
+ magic = *(__u16 *)skb->data;
+ if ((card->info.type == QETH_CARD_TYPE_IQD) &&
+ (magic == ETH_P_AF_IUCV)) {
+ skb->protocol = ETH_P_AF_IUCV;
+ skb->pkt_type = PACKET_HOST;
+ skb->mac_header = NET_SKB_PAD;
+ skb->dev = card->dev;
+ len = skb->len;
+ card->dev->header_ops->create(skb, card->dev, 0,
+ card->dev->dev_addr, "FAKELL",
+ card->dev->addr_len);
+ netif_receive_skb(skb);
+ } else {
+ is_vlan = qeth_l3_rebuild_skb(card, skb, hdr,
&vlan_tag);
- len = skb->len;
- if (is_vlan && !card->options.sniffer)
- __vlan_hwaccel_put_tag(skb, vlan_tag);
- napi_gro_receive(&card->napi, skb);
+ len = skb->len;
+ if (is_vlan && !card->options.sniffer)
+ __vlan_hwaccel_put_tag(skb, vlan_tag);
+ napi_gro_receive(&card->napi, skb);
+ }
break;
case QETH_HEADER_TYPE_LAYER2: /* for HiperSockets sniffer */
skb->pkt_type = PACKET_HOST;
@@ -2784,6 +2800,30 @@ int inline qeth_l3_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
return cast_type;
}
+static void qeth_l3_fill_af_iucv_hdr(struct qeth_card *card,
+ struct qeth_hdr *hdr, struct sk_buff *skb)
+{
+ char daddr[16];
+ struct af_iucv_trans_hdr *iucv_hdr;
+
+ skb_pull(skb, 14);
+ card->dev->header_ops->create(skb, card->dev, 0,
+ card->dev->dev_addr, card->dev->dev_addr,
+ card->dev->addr_len);
+ skb_pull(skb, 14);
+ iucv_hdr = (struct af_iucv_trans_hdr *)skb->data;
+ memset(hdr, 0, sizeof(struct qeth_hdr));
+ hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
+ hdr->hdr.l3.ext_flags = 0;
+ hdr->hdr.l3.length = skb->len;
+ hdr->hdr.l3.flags = QETH_HDR_IPV6 | QETH_CAST_UNICAST;
+ memset(daddr, 0, sizeof(daddr));
+ daddr[0] = 0xfe;
+ daddr[1] = 0x80;
+ memcpy(&daddr[8], iucv_hdr->destUserID, 8);
+ memcpy(hdr->hdr.l3.dest_addr, daddr, 16);
+}
+
static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
struct sk_buff *skb, int ipv, int cast_type)
{
@@ -2936,8 +2976,11 @@ static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
int data_offset = -1;
int nr_frags;
- if (((card->info.type == QETH_CARD_TYPE_IQD) && (!ipv)) ||
- card->options.sniffer)
+ if (((card->info.type == QETH_CARD_TYPE_IQD) &&
+ (((card->options.cq != QETH_CQ_ENABLED) && !ipv) ||
+ ((card->options.cq == QETH_CQ_ENABLED) &&
+ (skb->protocol != ETH_P_AF_IUCV)))) ||
+ card->options.sniffer)
goto tx_drop;
if ((card->state != CARD_STATE_UP) || !card->lan_online) {
@@ -2959,7 +3002,10 @@ static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
if ((card->info.type == QETH_CARD_TYPE_IQD) && (!large_send) &&
(skb_shinfo(skb)->nr_frags == 0)) {
new_skb = skb;
- data_offset = ETH_HLEN;
+ if (new_skb->protocol == ETH_P_AF_IUCV)
+ data_offset = 0;
+ else
+ data_offset = ETH_HLEN;
hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
if (!hdr)
goto tx_drop;
@@ -2993,7 +3039,6 @@ static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
tag = (u16 *)(new_skb->data + 12);
*tag = __constant_htons(ETH_P_8021Q);
*(tag + 1) = htons(vlan_tx_tag_get(new_skb));
- new_skb->vlan_tci = 0;
}
}
@@ -3025,9 +3070,13 @@ static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
qeth_l3_fill_header(card, hdr, new_skb, ipv,
cast_type);
} else {
- qeth_l3_fill_header(card, hdr, new_skb, ipv,
- cast_type);
- hdr->hdr.l3.length = new_skb->len - data_offset;
+ if (new_skb->protocol == ETH_P_AF_IUCV)
+ qeth_l3_fill_af_iucv_hdr(card, hdr, new_skb);
+ else {
+ qeth_l3_fill_header(card, hdr, new_skb, ipv,
+ cast_type);
+ hdr->hdr.l3.length = new_skb->len - data_offset;
+ }
}
if (skb->ip_summed == CHECKSUM_PARTIAL)
@@ -3226,7 +3275,7 @@ static const struct net_device_ops qeth_l3_netdev_ops = {
.ndo_get_stats = qeth_get_stats,
.ndo_start_xmit = qeth_l3_hard_start_xmit,
.ndo_validate_addr = eth_validate_addr,
- .ndo_set_multicast_list = qeth_l3_set_multicast_list,
+ .ndo_set_rx_mode = qeth_l3_set_multicast_list,
.ndo_do_ioctl = qeth_l3_do_ioctl,
.ndo_change_mtu = qeth_change_mtu,
.ndo_fix_features = qeth_l3_fix_features,
@@ -3242,7 +3291,7 @@ static const struct net_device_ops qeth_l3_osa_netdev_ops = {
.ndo_get_stats = qeth_get_stats,
.ndo_start_xmit = qeth_l3_hard_start_xmit,
.ndo_validate_addr = eth_validate_addr,
- .ndo_set_multicast_list = qeth_l3_set_multicast_list,
+ .ndo_set_rx_mode = qeth_l3_set_multicast_list,
.ndo_do_ioctl = qeth_l3_do_ioctl,
.ndo_change_mtu = qeth_change_mtu,
.ndo_fix_features = qeth_l3_fix_features,
@@ -3290,6 +3339,8 @@ static int qeth_l3_setup_netdev(struct qeth_card *card)
card->dev->flags |= IFF_NOARP;
card->dev->netdev_ops = &qeth_l3_netdev_ops;
qeth_l3_iqd_read_initial_mac(card);
+ if (card->options.hsuid[0])
+ memcpy(card->dev->perm_addr, card->options.hsuid, 9);
} else
return -ENODEV;
@@ -3660,7 +3711,6 @@ static int qeth_l3_ip6_event(struct notifier_block *this,
struct qeth_ipaddr *addr;
struct qeth_card *card;
-
card = qeth_l3_get_card_from_dev(dev);
if (!card)
return NOTIFY_DONE;
diff --git a/drivers/s390/net/qeth_l3_sys.c b/drivers/s390/net/qeth_l3_sys.c
index cd99210296e..0ea2fbfe0e9 100644
--- a/drivers/s390/net/qeth_l3_sys.c
+++ b/drivers/s390/net/qeth_l3_sys.c
@@ -9,7 +9,7 @@
*/
#include <linux/slab.h>
-
+#include <asm/ebcdic.h>
#include "qeth_l3.h"
#define QETH_DEVICE_ATTR(_id, _name, _mode, _show, _store) \
@@ -308,6 +308,8 @@ static ssize_t qeth_l3_dev_sniffer_store(struct device *dev,
if (card->info.type != QETH_CARD_TYPE_IQD)
return -EPERM;
+ if (card->options.cq == QETH_CQ_ENABLED)
+ return -EPERM;
mutex_lock(&card->conf_mutex);
if ((card->state != CARD_STATE_DOWN) &&
@@ -347,6 +349,111 @@ out:
static DEVICE_ATTR(sniffer, 0644, qeth_l3_dev_sniffer_show,
qeth_l3_dev_sniffer_store);
+
+static ssize_t qeth_l3_dev_hsuid_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct qeth_card *card = dev_get_drvdata(dev);
+ char tmp_hsuid[9];
+
+ if (!card)
+ return -EINVAL;
+
+ if (card->info.type != QETH_CARD_TYPE_IQD)
+ return -EPERM;
+
+ if (card->state == CARD_STATE_DOWN)
+ return -EPERM;
+
+ memcpy(tmp_hsuid, card->options.hsuid, sizeof(tmp_hsuid));
+ EBCASC(tmp_hsuid, 8);
+ return sprintf(buf, "%s\n", tmp_hsuid);
+}
+
+static ssize_t qeth_l3_dev_hsuid_store(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ struct qeth_card *card = dev_get_drvdata(dev);
+ struct qeth_ipaddr *addr;
+ char *tmp;
+ int i;
+
+ if (!card)
+ return -EINVAL;
+
+ if (card->info.type != QETH_CARD_TYPE_IQD)
+ return -EPERM;
+ if (card->state != CARD_STATE_DOWN &&
+ card->state != CARD_STATE_RECOVER)
+ return -EPERM;
+ if (card->options.sniffer)
+ return -EPERM;
+ if (card->options.cq == QETH_CQ_NOTAVAILABLE)
+ return -EPERM;
+
+ tmp = strsep((char **)&buf, "\n");
+ if (strlen(tmp) > 8)
+ return -EINVAL;
+
+ if (card->options.hsuid[0]) {
+ /* delete old ip address */
+ addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
+ if (addr != NULL) {
+ addr->u.a6.addr.s6_addr32[0] = 0xfe800000;
+ addr->u.a6.addr.s6_addr32[1] = 0x00000000;
+ for (i = 8; i < 16; i++)
+ addr->u.a6.addr.s6_addr[i] =
+ card->options.hsuid[i - 8];
+ addr->u.a6.pfxlen = 0;
+ addr->type = QETH_IP_TYPE_NORMAL;
+ } else
+ return -ENOMEM;
+ if (!qeth_l3_delete_ip(card, addr))
+ kfree(addr);
+ qeth_l3_set_ip_addr_list(card);
+ }
+
+ if (strlen(tmp) == 0) {
+ /* delete ip address only */
+ card->options.hsuid[0] = '\0';
+ if (card->dev)
+ memcpy(card->dev->perm_addr, card->options.hsuid, 9);
+ qeth_configure_cq(card, QETH_CQ_DISABLED);
+ return count;
+ }
+
+ if (qeth_configure_cq(card, QETH_CQ_ENABLED))
+ return -EPERM;
+
+ for (i = 0; i < 8; i++)
+ card->options.hsuid[i] = ' ';
+ card->options.hsuid[8] = '\0';
+ strncpy(card->options.hsuid, tmp, strlen(tmp));
+ ASCEBC(card->options.hsuid, 8);
+ if (card->dev)
+ memcpy(card->dev->perm_addr, card->options.hsuid, 9);
+
+ addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
+ if (addr != NULL) {
+ addr->u.a6.addr.s6_addr32[0] = 0xfe800000;
+ addr->u.a6.addr.s6_addr32[1] = 0x00000000;
+ for (i = 8; i < 16; i++)
+ addr->u.a6.addr.s6_addr[i] = card->options.hsuid[i - 8];
+ addr->u.a6.pfxlen = 0;
+ addr->type = QETH_IP_TYPE_NORMAL;
+ } else
+ return -ENOMEM;
+ if (!qeth_l3_add_ip(card, addr))
+ kfree(addr);
+ qeth_l3_set_ip_addr_list(card);
+
+ return count;
+}
+
+static DEVICE_ATTR(hsuid, 0644, qeth_l3_dev_hsuid_show,
+ qeth_l3_dev_hsuid_store);
+
+
static struct attribute *qeth_l3_device_attrs[] = {
&dev_attr_route4.attr,
&dev_attr_route6.attr,
@@ -354,6 +461,7 @@ static struct attribute *qeth_l3_device_attrs[] = {
&dev_attr_broadcast_mode.attr,
&dev_attr_canonical_macaddr.attr,
&dev_attr_sniffer.attr,
+ &dev_attr_hsuid.attr,
NULL,
};
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-12 14:28:38 +0000