From 9c3bfda999fb0e4f284021134e5040bed5c82ac5 Mon Sep 17 00:00:00 2001 From: Julian Wiedmann Date: Fri, 18 Aug 2017 10:19:07 +0200 Subject: [PATCH] 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 Signed-off-by: David S. Miller --- drivers/s390/net/qeth_core.h | 2 +- drivers/s390/net/qeth_core_main.c | 10 ++++------ drivers/s390/net/qeth_l2_main.c | 4 ++-- drivers/s390/net/qeth_l3_main.c | 2 +- 4 files changed, 8 insertions(+), 10 deletions(-) diff --git a/drivers/s390/net/qeth_core.h b/drivers/s390/net/qeth_core.h index 2f5673812810..5753fbc485d5 100644 --- 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 6cafeceea3ce..4a5c3028dfb6 100644 --- 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 c78d9fadb9c8..a6233ab562f0 100644 --- 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 fa8b638e3842..02400bbcb610 100644 --- 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); -- 2.20.1