Commit 504b9121 authored by Eric Dumazet's avatar Eric Dumazet Committed by David S. Miller
Browse files

net: tso: constify tso_count_descs() and friends 



skb argument of tso_count_descs(), tso_build_hdr() and tso_build_data() can be const.

Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 185c3e58

include/net/tso.h

+3 −3
Original line number Diff line number Diff line
@@ -15,10 +15,10 @@ struct tso_t { 
	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 tso_count_descs(const struct sk_buff *skb);

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_build_data(const struct sk_buff *skb, struct tso_t *tso, int size);

void tso_start(struct sk_buff *skb, struct tso_t *tso);



#endif	/* _TSO_H */

net/core/tso.c

+3 −3
Original line number Diff line number Diff line
@@ -6,14 +6,14 @@ 
#include <asm/unaligned.h>



/* Calculate expected number of TX descriptors */

int tso_count_descs(struct sk_buff *skb)

int tso_count_descs(const struct sk_buff *skb)

{

	/* The Marvell Way */

	return skb_shinfo(skb)->gso_segs * 2 + skb_shinfo(skb)->nr_frags;

}

EXPORT_SYMBOL(tso_count_descs);



void tso_build_hdr(struct sk_buff *skb, char *hdr, struct tso_t *tso,

void tso_build_hdr(const struct sk_buff *skb, char *hdr, struct tso_t *tso,

		   int size, bool is_last)

{

	struct tcphdr *tcph;
@@ -44,7 +44,7 @@ void tso_build_hdr(struct sk_buff *skb, char *hdr, struct tso_t *tso, 
}

EXPORT_SYMBOL(tso_build_hdr);



void tso_build_data(struct sk_buff *skb, struct tso_t *tso, int size)

void tso_build_data(const struct sk_buff *skb, struct tso_t *tso, int size)

{

	tso->tcp_seq += size;

	tso->size -= size;