Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) /* SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  * AF_XDP user-space access library.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  * Copyright(c) 2018 - 2019 Intel Corporation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8)  * Author(s): Magnus Karlsson <magnus.karlsson@intel.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #ifndef __LIBBPF_XSK_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #define __LIBBPF_XSK_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <stdio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <stdint.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include <linux/if_xdp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #include "libbpf.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #include "libbpf_util.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) #ifdef __cplusplus
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) extern "C" {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) /* Do not access these members directly. Use the functions below. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) #define DEFINE_XSK_RING(name) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) struct name { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) 	__u32 cached_prod; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) 	__u32 cached_cons; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) 	__u32 mask; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 	__u32 size; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 	__u32 *producer; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 	__u32 *consumer; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 	void *ring; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 	__u32 *flags; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) DEFINE_XSK_RING(xsk_ring_prod);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) DEFINE_XSK_RING(xsk_ring_cons);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) /* For a detailed explanation on the memory barriers associated with the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42)  * ring, please take a look at net/xdp/xsk_queue.h.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) struct xsk_umem;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) struct xsk_socket;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) static inline __u64 *xsk_ring_prod__fill_addr(struct xsk_ring_prod *fill,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 					      __u32 idx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 	__u64 *addrs = (__u64 *)fill->ring;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 	return &addrs[idx & fill->mask];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) static inline const __u64 *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) xsk_ring_cons__comp_addr(const struct xsk_ring_cons *comp, __u32 idx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 	const __u64 *addrs = (const __u64 *)comp->ring;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 	return &addrs[idx & comp->mask];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) static inline struct xdp_desc *xsk_ring_prod__tx_desc(struct xsk_ring_prod *tx,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 						      __u32 idx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 	struct xdp_desc *descs = (struct xdp_desc *)tx->ring;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 	return &descs[idx & tx->mask];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) static inline const struct xdp_desc *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) xsk_ring_cons__rx_desc(const struct xsk_ring_cons *rx, __u32 idx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 	const struct xdp_desc *descs = (const struct xdp_desc *)rx->ring;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 	return &descs[idx & rx->mask];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) static inline int xsk_ring_prod__needs_wakeup(const struct xsk_ring_prod *r)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 	return *r->flags & XDP_RING_NEED_WAKEUP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) static inline __u32 xsk_prod_nb_free(struct xsk_ring_prod *r, __u32 nb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 	__u32 free_entries = r->cached_cons - r->cached_prod;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 	if (free_entries >= nb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 		return free_entries;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 	/* Refresh the local tail pointer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 	 * cached_cons is r->size bigger than the real consumer pointer so
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 	 * that this addition can be avoided in the more frequently
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 	 * executed code that computs free_entries in the beginning of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 	 * this function. Without this optimization it whould have been
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 	 * free_entries = r->cached_prod - r->cached_cons + r->size.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 	r->cached_cons = *r->consumer + r->size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 	return r->cached_cons - r->cached_prod;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) static inline __u32 xsk_cons_nb_avail(struct xsk_ring_cons *r, __u32 nb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 	__u32 entries = r->cached_prod - r->cached_cons;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 	if (entries == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 		r->cached_prod = *r->producer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 		entries = r->cached_prod - r->cached_cons;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 	return (entries > nb) ? nb : entries;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) static inline size_t xsk_ring_prod__reserve(struct xsk_ring_prod *prod,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 					    size_t nb, __u32 *idx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 	if (xsk_prod_nb_free(prod, nb) < nb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 	*idx = prod->cached_prod;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 	prod->cached_prod += nb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 	return nb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) static inline void xsk_ring_prod__submit(struct xsk_ring_prod *prod, size_t nb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 	/* Make sure everything has been written to the ring before indicating
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 	 * this to the kernel by writing the producer pointer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 	libbpf_smp_wmb();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 	*prod->producer += nb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) static inline size_t xsk_ring_cons__peek(struct xsk_ring_cons *cons,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 					 size_t nb, __u32 *idx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 	size_t entries = xsk_cons_nb_avail(cons, nb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 	if (entries > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 		/* Make sure we do not speculatively read the data before
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 		 * we have received the packet buffers from the ring.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 		 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 		libbpf_smp_rmb();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 		*idx = cons->cached_cons;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 		cons->cached_cons += entries;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 	return entries;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) static inline void xsk_ring_cons__release(struct xsk_ring_cons *cons, size_t nb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 	/* Make sure data has been read before indicating we are done
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 	 * with the entries by updating the consumer pointer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 	libbpf_smp_rwmb();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 	*cons->consumer += nb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) static inline void *xsk_umem__get_data(void *umem_area, __u64 addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 	return &((char *)umem_area)[addr];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) static inline __u64 xsk_umem__extract_addr(__u64 addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 	return addr & XSK_UNALIGNED_BUF_ADDR_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) static inline __u64 xsk_umem__extract_offset(__u64 addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 	return addr >> XSK_UNALIGNED_BUF_OFFSET_SHIFT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) static inline __u64 xsk_umem__add_offset_to_addr(__u64 addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 	return xsk_umem__extract_addr(addr) + xsk_umem__extract_offset(addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) LIBBPF_API int xsk_umem__fd(const struct xsk_umem *umem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) LIBBPF_API int xsk_socket__fd(const struct xsk_socket *xsk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) #define XSK_RING_CONS__DEFAULT_NUM_DESCS      2048
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) #define XSK_RING_PROD__DEFAULT_NUM_DESCS      2048
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) #define XSK_UMEM__DEFAULT_FRAME_SHIFT    12 /* 4096 bytes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) #define XSK_UMEM__DEFAULT_FRAME_SIZE     (1 << XSK_UMEM__DEFAULT_FRAME_SHIFT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) #define XSK_UMEM__DEFAULT_FRAME_HEADROOM 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) #define XSK_UMEM__DEFAULT_FLAGS 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) struct xsk_umem_config {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 	__u32 fill_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 	__u32 comp_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 	__u32 frame_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 	__u32 frame_headroom;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 	__u32 flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) /* Flags for the libbpf_flags field. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) #define XSK_LIBBPF_FLAGS__INHIBIT_PROG_LOAD (1 << 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) struct xsk_socket_config {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 	__u32 rx_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 	__u32 tx_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 	__u32 libbpf_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 	__u32 xdp_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 	__u16 bind_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) /* Set config to NULL to get the default configuration. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) LIBBPF_API int xsk_umem__create(struct xsk_umem **umem,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 				void *umem_area, __u64 size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 				struct xsk_ring_prod *fill,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 				struct xsk_ring_cons *comp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 				const struct xsk_umem_config *config);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) LIBBPF_API int xsk_umem__create_v0_0_2(struct xsk_umem **umem,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 				       void *umem_area, __u64 size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 				       struct xsk_ring_prod *fill,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 				       struct xsk_ring_cons *comp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 				       const struct xsk_umem_config *config);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) LIBBPF_API int xsk_umem__create_v0_0_4(struct xsk_umem **umem,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 				       void *umem_area, __u64 size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 				       struct xsk_ring_prod *fill,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 				       struct xsk_ring_cons *comp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 				       const struct xsk_umem_config *config);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) LIBBPF_API int xsk_socket__create(struct xsk_socket **xsk,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 				  const char *ifname, __u32 queue_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 				  struct xsk_umem *umem,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 				  struct xsk_ring_cons *rx,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 				  struct xsk_ring_prod *tx,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 				  const struct xsk_socket_config *config);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) LIBBPF_API int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) xsk_socket__create_shared(struct xsk_socket **xsk_ptr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 			  const char *ifname,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 			  __u32 queue_id, struct xsk_umem *umem,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 			  struct xsk_ring_cons *rx,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 			  struct xsk_ring_prod *tx,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 			  struct xsk_ring_prod *fill,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 			  struct xsk_ring_cons *comp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 			  const struct xsk_socket_config *config);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) /* Returns 0 for success and -EBUSY if the umem is still in use. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) LIBBPF_API int xsk_umem__delete(struct xsk_umem *umem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) LIBBPF_API void xsk_socket__delete(struct xsk_socket *xsk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) #ifdef __cplusplus
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) } /* extern "C" */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) #endif /* __LIBBPF_XSK_H */