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34 #ifndef RTE_PMD_SZEDATA2_H_
35 #define RTE_PMD_SZEDATA2_H_
37 /* szedata2_packet header length == 4 bytes == 2B segment size + 2B hw size */
38 #define RTE_SZE2_PACKET_HEADER_SIZE 4
40 #define RTE_SZE2_MMIO_MAX 10
43 * Round 'what' to the nearest larger (or equal) multiple of '8'
44 * (szedata2 packet is aligned to 8 bytes)
46 #define RTE_SZE2_ALIGN8(what) (((what) + ((8) - 1)) & (~((8) - 1)))
48 /*! main handle structure */
51 struct sze2_instance_info *info;
53 void *space[RTE_SZE2_MMIO_MAX];
54 struct szedata_lock lock[2][2];
56 __u32 *rx_asize, *tx_asize;
58 /* szedata_read_next variables - to keep context (ct) */
63 /** initial sze lock ptr */
64 const struct szedata_lock *ct_rx_lck_orig;
65 /** current sze lock ptr (initial or next) */
66 const struct szedata_lock *ct_rx_lck;
67 /** remaining bytes (not read) within current lock */
68 unsigned int ct_rx_rem_bytes;
69 /** current pointer to locked memory */
70 unsigned char *ct_rx_cur_ptr;
72 * allocated buffer to store RX packet if it was split
75 unsigned char *ct_rx_buffer;
76 /** registered function to provide filtering based on hwdata */
77 int (*ct_rx_filter)(u_int16_t hwdata_len, u_char *hwdata);
83 * buffer for tx - packet is prepared here
84 * (in future for burst write)
86 unsigned char *ct_tx_buffer;
87 /** initial sze TX lock ptrs - number according to TX interfaces */
88 const struct szedata_lock **ct_tx_lck_orig;
89 /** current sze TX lock ptrs - number according to TX interfaces */
90 const struct szedata_lock **ct_tx_lck;
91 /** already written bytes in both locks */
92 unsigned int *ct_tx_written_bytes;
93 /** remaining bytes (not written) within current lock */
94 unsigned int *ct_tx_rem_bytes;
95 /** current pointers to locked memory */
96 unsigned char **ct_tx_cur_ptr;
97 /** NUMA node closest to PCIe device, or -1 */