/* SPDX-License-Identifier: BSD-3-Clause */
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/*$FreeBSD$*/

/**
 * @file iavf_txrx_common.h
 * @brief Tx/Rx hotpath functions common to legacy and iflib
 *
 * Contains implementations for functions used in the hotpath for both the
 * legacy and iflib driver implementations.
 */
#ifndef _IAVF_TXRX_COMMON_H_
#define _IAVF_TXRX_COMMON_H_

#include "iavf_iflib.h"

static inline int iavf_ptype_to_hash(u8 ptype);

/**
 * iavf_ptype_to_hash - parse the packet type
 * @ptype: packet type
 *
 * Determine the appropriate hash for a given packet type
 *
 * @returns the M_HASHTYPE_* value for the given packet type.
 */
static inline int
iavf_ptype_to_hash(u8 ptype)
{
        struct iavf_rx_ptype_decoded decoded;

	decoded = decode_rx_desc_ptype(ptype);

	if (!decoded.known)
		return M_HASHTYPE_OPAQUE;

	if (decoded.outer_ip == IAVF_RX_PTYPE_OUTER_L2)
		return M_HASHTYPE_OPAQUE;

	/* Note: anything that gets to this point is IP */
        if (decoded.outer_ip_ver == IAVF_RX_PTYPE_OUTER_IPV6) {
		switch (decoded.inner_prot) {
		case IAVF_RX_PTYPE_INNER_PROT_TCP:
			return M_HASHTYPE_RSS_TCP_IPV6;
		case IAVF_RX_PTYPE_INNER_PROT_UDP:
			return M_HASHTYPE_RSS_UDP_IPV6;
		default:
			return M_HASHTYPE_RSS_IPV6;
		}
	}
        if (decoded.outer_ip_ver == IAVF_RX_PTYPE_OUTER_IPV4) {
		switch (decoded.inner_prot) {
		case IAVF_RX_PTYPE_INNER_PROT_TCP:
			return M_HASHTYPE_RSS_TCP_IPV4;
		case IAVF_RX_PTYPE_INNER_PROT_UDP:
			return M_HASHTYPE_RSS_UDP_IPV4;
		default:
			return M_HASHTYPE_RSS_IPV4;
		}
	}
	/* We should never get here! */
	return M_HASHTYPE_OPAQUE;
}

#endif /* _IAVF_TXRX_COMMON_H_ */