diff options
Diffstat (limited to 'include/net/tso.h')
| -rw-r--r-- | include/net/tso.h | 29 |
1 files changed, 18 insertions, 11 deletions
diff --git a/include/net/tso.h b/include/net/tso.h index 7e166a570349..e7e157ae0526 100644 --- a/include/net/tso.h +++ b/include/net/tso.h @@ -2,23 +2,30 @@ #ifndef _TSO_H #define _TSO_H +#include <linux/skbuff.h> #include <net/ip.h> -#define TSO_HEADER_SIZE 128 +#define TSO_HEADER_SIZE 256 struct tso_t { - int next_frag_idx; - void *data; - size_t size; - u16 ip_id; - bool ipv6; - u32 tcp_seq; + int next_frag_idx; + int size; + void *data; + u16 ip_id; + u8 tlen; /* transport header len */ + bool ipv6; + u32 tcp_seq; }; -int tso_count_descs(struct sk_buff *skb); -void tso_build_hdr(struct sk_buff *skb, char *hdr, struct tso_t *tso, +/* 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(struct sk_buff *skb, struct tso_t *tso, int size); -void tso_start(struct sk_buff *skb, struct tso_t *tso); +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 */ |