diff options
Diffstat (limited to 'include/net/tso.h')
| -rw-r--r-- | include/net/tso.h | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/include/net/tso.h b/include/net/tso.h new file mode 100644 index 0000000000..e7e157ae05 --- /dev/null +++ b/include/net/tso.h @@ -0,0 +1,31 @@ +/* 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 */ |