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net: tso: constify tso_count_descs() and friends

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

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2020-06-17 20:53:24 -07:00 committed by David S. Miller
parent 185c3e5860
commit 504b912150
2 changed files with 6 additions and 6 deletions
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6
include/net/tso.h
View file

@ -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 */

6
net/core/tso.c
View file

@ -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;