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-rw-r--r--drivers/s390/net/qeth_core.h9
-rw-r--r--drivers/s390/net/qeth_core_main.c53
2 files changed, 8 insertions, 54 deletions
diff --git a/drivers/s390/net/qeth_core.h b/drivers/s390/net/qeth_core.h
index 6be43eb126b4..f47a714538db 100644
--- a/drivers/s390/net/qeth_core.h
+++ b/drivers/s390/net/qeth_core.h
@@ -440,7 +440,6 @@ struct qeth_qdio_out_q {
440 * index of buffer to be filled by driver; state EMPTY or PACKING 440 * index of buffer to be filled by driver; state EMPTY or PACKING
441 */ 441 */
442 int next_buf_to_fill; 442 int next_buf_to_fill;
443 int sync_iqdio_error;
444 /* 443 /*
445 * number of buffers that are currently filled (PRIMED) 444 * number of buffers that are currently filled (PRIMED)
446 * -> these buffers are hardware-owned 445 * -> these buffers are hardware-owned
@@ -695,14 +694,6 @@ struct qeth_mc_mac {
695 int is_vmac; 694 int is_vmac;
696}; 695};
697 696
698struct qeth_skb_data {
699 __u32 magic;
700 int count;
701};
702
703#define QETH_SKB_MAGIC 0x71657468
704#define QETH_SIGA_CC2_RETRIES 3
705
706struct qeth_rx { 697struct qeth_rx {
707 int b_count; 698 int b_count;
708 int b_index; 699 int b_index;
diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c
index 764267062601..09ab6a2d3e49 100644
--- a/drivers/s390/net/qeth_core_main.c
+++ b/drivers/s390/net/qeth_core_main.c
@@ -877,8 +877,8 @@ out:
877 return; 877 return;
878} 878}
879 879
880static void __qeth_clear_output_buffer(struct qeth_qdio_out_q *queue, 880static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
881 struct qeth_qdio_out_buffer *buf, unsigned int qeth_skip_skb) 881 struct qeth_qdio_out_buffer *buf)
882{ 882{
883 int i; 883 int i;
884 struct sk_buff *skb; 884 struct sk_buff *skb;
@@ -887,13 +887,11 @@ static void __qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
887 if (buf->buffer->element[0].flags & 0x40) 887 if (buf->buffer->element[0].flags & 0x40)
888 atomic_dec(&queue->set_pci_flags_count); 888 atomic_dec(&queue->set_pci_flags_count);
889 889
890 if (!qeth_skip_skb) { 890 skb = skb_dequeue(&buf->skb_list);
891 while (skb) {
892 atomic_dec(&skb->users);
893 dev_kfree_skb_any(skb);
891 skb = skb_dequeue(&buf->skb_list); 894 skb = skb_dequeue(&buf->skb_list);
892 while (skb) {
893 atomic_dec(&skb->users);
894 dev_kfree_skb_any(skb);
895 skb = skb_dequeue(&buf->skb_list);
896 }
897 } 895 }
898 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) { 896 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
899 if (buf->buffer->element[i].addr && buf->is_header[i]) 897 if (buf->buffer->element[i].addr && buf->is_header[i])
@@ -909,12 +907,6 @@ static void __qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
909 atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY); 907 atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY);
910} 908}
911 909
912static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
913 struct qeth_qdio_out_buffer *buf)
914{
915 __qeth_clear_output_buffer(queue, buf, 0);
916}
917
918void qeth_clear_qdio_buffers(struct qeth_card *card) 910void qeth_clear_qdio_buffers(struct qeth_card *card)
919{ 911{
920 int i, j; 912 int i, j;
@@ -2833,7 +2825,6 @@ static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
2833 } 2825 }
2834 } 2826 }
2835 2827
2836 queue->sync_iqdio_error = 0;
2837 queue->card->dev->trans_start = jiffies; 2828 queue->card->dev->trans_start = jiffies;
2838 if (queue->card->options.performance_stats) { 2829 if (queue->card->options.performance_stats) {
2839 queue->card->perf_stats.outbound_do_qdio_cnt++; 2830 queue->card->perf_stats.outbound_do_qdio_cnt++;
@@ -2849,10 +2840,6 @@ static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
2849 queue->card->perf_stats.outbound_do_qdio_time += 2840 queue->card->perf_stats.outbound_do_qdio_time +=
2850 qeth_get_micros() - 2841 qeth_get_micros() -
2851 queue->card->perf_stats.outbound_do_qdio_start_time; 2842 queue->card->perf_stats.outbound_do_qdio_start_time;
2852 if (rc > 0) {
2853 if (!(rc & QDIO_ERROR_SIGA_BUSY))
2854 queue->sync_iqdio_error = rc & 3;
2855 }
2856 if (rc) { 2843 if (rc) {
2857 queue->card->stats.tx_errors += count; 2844 queue->card->stats.tx_errors += count;
2858 /* ignore temporary SIGA errors without busy condition */ 2845 /* ignore temporary SIGA errors without busy condition */
@@ -2940,7 +2927,6 @@ void qeth_qdio_output_handler(struct ccw_device *ccwdev,
2940 struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue]; 2927 struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
2941 struct qeth_qdio_out_buffer *buffer; 2928 struct qeth_qdio_out_buffer *buffer;
2942 int i; 2929 int i;
2943 unsigned qeth_send_err;
2944 2930
2945 QETH_CARD_TEXT(card, 6, "qdouhdl"); 2931 QETH_CARD_TEXT(card, 6, "qdouhdl");
2946 if (qdio_error & QDIO_ERROR_ACTIVATE_CHECK_CONDITION) { 2932 if (qdio_error & QDIO_ERROR_ACTIVATE_CHECK_CONDITION) {
@@ -2956,9 +2942,8 @@ void qeth_qdio_output_handler(struct ccw_device *ccwdev,
2956 } 2942 }
2957 for (i = first_element; i < (first_element + count); ++i) { 2943 for (i = first_element; i < (first_element + count); ++i) {
2958 buffer = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q]; 2944 buffer = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q];
2959 qeth_send_err = qeth_handle_send_error(card, buffer, qdio_error); 2945 qeth_handle_send_error(card, buffer, qdio_error);
2960 __qeth_clear_output_buffer(queue, buffer, 2946 qeth_clear_output_buffer(queue, buffer);
2961 (qeth_send_err == QETH_SEND_ERROR_RETRY) ? 1 : 0);
2962 } 2947 }
2963 atomic_sub(count, &queue->used_buffers); 2948 atomic_sub(count, &queue->used_buffers);
2964 /* check if we need to do something on this outbound queue */ 2949 /* check if we need to do something on this outbound queue */
@@ -3183,10 +3168,7 @@ int qeth_do_send_packet_fast(struct qeth_card *card,
3183 int offset, int hd_len) 3168 int offset, int hd_len)
3184{ 3169{
3185 struct qeth_qdio_out_buffer *buffer; 3170 struct qeth_qdio_out_buffer *buffer;
3186 struct sk_buff *skb1;
3187 struct qeth_skb_data *retry_ctrl;
3188 int index; 3171 int index;
3189 int rc;
3190 3172
3191 /* spin until we get the queue ... */ 3173 /* spin until we get the queue ... */
3192 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED, 3174 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
@@ -3205,25 +3187,6 @@ int qeth_do_send_packet_fast(struct qeth_card *card,
3205 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); 3187 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3206 qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len); 3188 qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
3207 qeth_flush_buffers(queue, index, 1); 3189 qeth_flush_buffers(queue, index, 1);
3208 if (queue->sync_iqdio_error == 2) {
3209 skb1 = skb_dequeue(&buffer->skb_list);
3210 while (skb1) {
3211 atomic_dec(&skb1->users);
3212 skb1 = skb_dequeue(&buffer->skb_list);
3213 }
3214 retry_ctrl = (struct qeth_skb_data *) &skb->cb[16];
3215 if (retry_ctrl->magic != QETH_SKB_MAGIC) {
3216 retry_ctrl->magic = QETH_SKB_MAGIC;
3217 retry_ctrl->count = 0;
3218 }
3219 if (retry_ctrl->count < QETH_SIGA_CC2_RETRIES) {
3220 retry_ctrl->count++;
3221 rc = dev_queue_xmit(skb);
3222 } else {
3223 dev_kfree_skb_any(skb);
3224 QETH_CARD_TEXT(card, 2, "qrdrop");
3225 }
3226 }
3227 return 0; 3190 return 0;
3228out: 3191out:
3229 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); 3192 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);