From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:59724 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730671AbgEEQ0L (ORCPT ); Tue, 5 May 2020 12:26:11 -0400 From: Julian Wiedmann Subject: [PATCH net-next 06/11] s390/qeth: merge TX skb mapping code Date: Tue, 5 May 2020 18:25:54 +0200 Message-Id: <20200505162559.14138-7-jwi@linux.ibm.com> In-Reply-To: <20200505162559.14138-1-jwi@linux.ibm.com> References: <20200505162559.14138-1-jwi@linux.ibm.com> Sender: linux-s390-owner@vger.kernel.org List-ID: To: David Miller Cc: netdev , linux-s390 , Heiko Carstens , Ursula Braun , Julian Wiedmann Merge the __qeth_fill_buffer() helper into its only caller. This way all mapping-related context is in one place, and we can make some more use of it in a subsequent patch. Signed-off-by: Julian Wiedmann --- drivers/s390/net/qeth_core_main.c | 64 +++++++++++++------------------ 1 file changed, 27 insertions(+), 37 deletions(-) diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c index 1f18b38047a0..9c9a6edb5384 100644 --- a/drivers/s390/net/qeth_core_main.c +++ b/drivers/s390/net/qeth_core_main.c @@ -4081,15 +4081,39 @@ static bool qeth_iqd_may_bulk(struct qeth_qdio_out_q *queue, qeth_l3_iqd_same_vlan(&prev_hdr->hdr.l3, &curr_hdr->hdr.l3); } -static unsigned int __qeth_fill_buffer(struct sk_buff *skb, - struct qeth_qdio_out_buffer *buf, - bool is_first_elem, unsigned int offset) +/** + * qeth_fill_buffer() - map skb into an output buffer + * @buf: buffer to transport the skb + * @skb: skb to map into the buffer + * @hdr: qeth_hdr for this skb. Either at skb->data, or allocated + * from qeth_core_header_cache. + * @offset: when mapping the skb, start at skb->data + offset + * @hd_len: if > 0, build a dedicated header element of this size + */ +static unsigned int qeth_fill_buffer(struct qeth_qdio_out_buffer *buf, + struct sk_buff *skb, struct qeth_hdr *hdr, + unsigned int offset, unsigned int hd_len) { struct qdio_buffer *buffer = buf->buffer; int element = buf->next_element_to_fill; int length = skb_headlen(skb) - offset; char *data = skb->data + offset; unsigned int elem_length, cnt; + bool is_first_elem = true; + + __skb_queue_tail(&buf->skb_list, skb); + + /* build dedicated element for HW Header */ + if (hd_len) { + is_first_elem = false; + + buffer->element[element].addr = virt_to_phys(hdr); + buffer->element[element].length = hd_len; + buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG; + /* remember to free cache-allocated HW header: */ + buf->is_header[element] = ((void *)hdr != skb->data); + element++; + } /* map linear part into buffer element(s) */ while (length > 0) { @@ -4143,40 +4167,6 @@ static unsigned int __qeth_fill_buffer(struct sk_buff *skb, return element; } -/** - * qeth_fill_buffer() - map skb into an output buffer - * @buf: buffer to transport the skb - * @skb: skb to map into the buffer - * @hdr: qeth_hdr for this skb. Either at skb->data, or allocated - * from qeth_core_header_cache. - * @offset: when mapping the skb, start at skb->data + offset - * @hd_len: if > 0, build a dedicated header element of this size - */ -static unsigned int qeth_fill_buffer(struct qeth_qdio_out_buffer *buf, - struct sk_buff *skb, struct qeth_hdr *hdr, - unsigned int offset, unsigned int hd_len) -{ - struct qdio_buffer *buffer = buf->buffer; - bool is_first_elem = true; - - __skb_queue_tail(&buf->skb_list, skb); - - /* build dedicated header element */ - if (hd_len) { - int element = buf->next_element_to_fill; - is_first_elem = false; - - buffer->element[element].addr = virt_to_phys(hdr); - buffer->element[element].length = hd_len; - buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG; - /* remember to free cache-allocated qeth_hdr: */ - buf->is_header[element] = ((void *)hdr != skb->data); - buf->next_element_to_fill++; - } - - return __qeth_fill_buffer(skb, buf, is_first_elem, offset); -} - static int __qeth_xmit(struct qeth_card *card, struct qeth_qdio_out_q *queue, struct sk_buff *skb, unsigned int elements, struct qeth_hdr *hdr, unsigned int offset, -- 2.17.1