s390/qeth: pass TSO data offset to fill_buffer()

For TSO we need to skip the skb's qeth/IP/TCP headers when mapping
it into buffer elements. Instead of (mis)using skb_pull(), pass a
corresponding offset to fill_buffer() like we already do for IQDs.

No actual change in the resulting TSO buffers.

Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/s390/net/qeth_core.h b/drivers/s390/net/qeth_core.h
index 2f56738..5753fbc 100644 (file)
--- a/drivers/s390/net/qeth_core.h
+++ b/drivers/s390/net/qeth_core.h
@@ -952,7 +952,7 @@ int qeth_do_send_packet_fast(struct qeth_card *card,
                             unsigned int hd_len);
 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
                        struct sk_buff *skb, struct qeth_hdr *hdr,
-                       unsigned int hd_len, int elements);
+                       unsigned int hd_len, unsigned int offset, int elements);
 int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
 int qeth_core_get_sset_count(struct net_device *, int);
 void qeth_core_get_ethtool_stats(struct net_device *,

diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c
index 6cafece..4a5c302 100644 (file)
--- a/drivers/s390/net/qeth_core_main.c
+++ b/drivers/s390/net/qeth_core_main.c
@@ -3975,11 +3975,8 @@ static int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
                buffer->element[element].length = hd_len;
                buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
                buf->next_element_to_fill++;
-               skb_pull(skb, hd_len);
-       }
-
        /* IQD */
-       if (offset > 0) {
+       } else if (offset) {
                int element = buf->next_element_to_fill;
                is_first_elem = false;
 
@@ -4049,7 +4046,8 @@ EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast);
 
 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
                        struct sk_buff *skb, struct qeth_hdr *hdr,
-                       unsigned int hd_len, int elements_needed)
+                       unsigned int offset, unsigned int hd_len,
+                       int elements_needed)
 {
        struct qeth_qdio_out_buffer *buffer;
        int start_index;
@@ -4098,7 +4096,7 @@ int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
                        }
                }
        }
-       tmp = qeth_fill_buffer(queue, buffer, skb, hdr, 0, hd_len);
+       tmp = qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
        queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
                                  QDIO_MAX_BUFFERS_PER_Q;
        flush_count += tmp;

diff --git a/drivers/s390/net/qeth_l2_main.c b/drivers/s390/net/qeth_l2_main.c
index c78d9fa..a6233ab 100644 (file)
--- a/drivers/s390/net/qeth_l2_main.c
+++ b/drivers/s390/net/qeth_l2_main.c
@@ -746,7 +746,7 @@ static int qeth_l2_xmit_osa(struct qeth_card *card, struct sk_buff *skb,
                rc = -EINVAL;
                goto out;
        }
-       rc = qeth_do_send_packet(card, queue, skb_copy, hdr, 0, elements);
+       rc = qeth_do_send_packet(card, queue, skb_copy, hdr, 0, 0, elements);
 out:
        if (!rc) {
                /* tx success, free dangling original */
@@ -778,7 +778,7 @@ static int qeth_l2_xmit_osn(struct qeth_card *card, struct sk_buff *skb,
                return -E2BIG;
        if (qeth_hdr_chk_and_bounce(skb, &hdr, sizeof(*hdr)))
                return -EINVAL;
-       return qeth_do_send_packet(card, queue, skb, hdr, 0, elements);
+       return qeth_do_send_packet(card, queue, skb, hdr, 0, 0, elements);
 }
 
 static netdev_tx_t qeth_l2_hard_start_xmit(struct sk_buff *skb,

diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c
index fa8b638..02400bb 100644 (file)
--- a/drivers/s390/net/qeth_l3_main.c
+++ b/drivers/s390/net/qeth_l3_main.c
@@ -2768,7 +2768,7 @@ static netdev_tx_t qeth_l3_hard_start_xmit(struct sk_buff *skb,
                if (qeth_hdr_chk_and_bounce(new_skb, &hdr, len))
                        goto tx_drop;
                rc = qeth_do_send_packet(card, queue, new_skb, hdr, hd_len,
-                                        elements);
+                                        hd_len, elements);
        } else
                rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
                                              data_offset, 0);