/* SPDX-License-Identifier: GPL-2.0 */ | |
#ifndef _TSO_H | |
#define _TSO_H | |
#include <linux/skbuff.h> | |
#include <net/ip.h> | |
#define TSO_HEADER_SIZE 256 | |
struct tso_t { | |
int next_frag_idx; | |
int size; | |
void *data; | |
u16 ip_id; | |
u8 tlen; /* transport header len */ | |
bool ipv6; | |
u32 tcp_seq; | |
}; | |
/* Calculate the worst case buffer count */ | |
static inline int tso_count_descs(const struct sk_buff *skb) | |
{ | |
return skb_shinfo(skb)->gso_segs * 2 + skb_shinfo(skb)->nr_frags; | |
} | |
void tso_build_hdr(const struct sk_buff *skb, char *hdr, struct tso_t *tso, | |
int size, bool is_last); | |
void tso_build_data(const struct sk_buff *skb, struct tso_t *tso, int size); | |
int tso_start(struct sk_buff *skb, struct tso_t *tso); | |
#endif /* _TSO_H */ |