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net: Add a software TSO helper API

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Although the implementation probably needs a lot of work, this initial API
allows to implement software TSO in mvneta and mv643xx_eth drivers in a not
so intrusive way.

Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ezequiel Garcia
2014-05-19 13:59:52 -03:00
committed by David S. Miller
parent 8af750d739
commit e876f208af
3 changed files with 93 additions and 1 deletions
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20
include/net/tso.h Normal file
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@@ -0,0 +1,20 @@
#ifndef _TSO_H
#define _TSO_H
#include <net/ip.h>
struct tso_t {
int next_frag_idx;
void *data;
size_t size;
u16 ip_id;
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,
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);
#endif /* _TSO_H */