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Diffstat (limited to 'drivers/net/szedata2/rte_eth_szedata2.h')
-rw-r--r--drivers/net/szedata2/rte_eth_szedata2.h102
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diff --git a/drivers/net/szedata2/rte_eth_szedata2.h b/drivers/net/szedata2/rte_eth_szedata2.h
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+++ b/drivers/net/szedata2/rte_eth_szedata2.h
@@ -0,0 +1,102 @@
+/*-
+ * BSD LICENSE
+ *
+ * Copyright (c) 2015 CESNET
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of CESNET nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef RTE_PMD_SZEDATA2_H_
+#define RTE_PMD_SZEDATA2_H_
+
+/* szedata2_packet header length == 4 bytes == 2B segment size + 2B hw size */
+#define RTE_SZE2_PACKET_HEADER_SIZE 4
+
+#define RTE_SZE2_MMIO_MAX 10
+
+/*!
+ * Round 'what' to the nearest larger (or equal) multiple of '8'
+ * (szedata2 packet is aligned to 8 bytes)
+ */
+#define RTE_SZE2_ALIGN8(what) (((what) + ((8) - 1)) & (~((8) - 1)))
+
+/*! main handle structure */
+struct szedata {
+ int fd;
+ struct sze2_instance_info *info;
+ uint32_t *write_size;
+ void *space[RTE_SZE2_MMIO_MAX];
+ struct szedata_lock lock[2][2];
+
+ __u32 *rx_asize, *tx_asize;
+
+ /* szedata_read_next variables - to keep context (ct) */
+
+ /*
+ * rx
+ */
+ /** initial sze lock ptr */
+ const struct szedata_lock *ct_rx_lck_orig;
+ /** current sze lock ptr (initial or next) */
+ const struct szedata_lock *ct_rx_lck;
+ /** remaining bytes (not read) within current lock */
+ unsigned int ct_rx_rem_bytes;
+ /** current pointer to locked memory */
+ unsigned char *ct_rx_cur_ptr;
+ /**
+ * allocated buffer to store RX packet if it was split
+ * into 2 buffers
+ */
+ unsigned char *ct_rx_buffer;
+ /** registered function to provide filtering based on hwdata */
+ int (*ct_rx_filter)(u_int16_t hwdata_len, u_char *hwdata);
+
+ /*
+ * tx
+ */
+ /**
+ * buffer for tx - packet is prepared here
+ * (in future for burst write)
+ */
+ unsigned char *ct_tx_buffer;
+ /** initial sze TX lock ptrs - number according to TX interfaces */
+ const struct szedata_lock **ct_tx_lck_orig;
+ /** current sze TX lock ptrs - number according to TX interfaces */
+ const struct szedata_lock **ct_tx_lck;
+ /** already written bytes in both locks */
+ unsigned int *ct_tx_written_bytes;
+ /** remaining bytes (not written) within current lock */
+ unsigned int *ct_tx_rem_bytes;
+ /** current pointers to locked memory */
+ unsigned char **ct_tx_cur_ptr;
+ /** NUMA node closest to PCIe device, or -1 */
+ int numa_node;
+};
+
+
+#endif