netdev - [PATCH net-next 3/5] net: tso: constify tso_count

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Message-Id: <20200617184819.49986-4-edumazet@google.com>
Date:   Wed, 17 Jun 2020 11:48:17 -0700
From:   Eric Dumazet <edumazet@...gle.com>
To:     "David S . Miller" <davem@...emloft.net>
Cc:     netdev <netdev@...r.kernel.org>,
        Eric Dumazet <edumazet@...gle.com>,
        Eric Dumazet <eric.dumazet@...il.com>,
        Willem de Bruijn <willemb@...gle.com>,
        Antoine Tenart <antoine.tenart@...tlin.com>
Subject: [PATCH net-next 3/5] 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: Eric Dumazet <edumazet@...gle.com>
---
 include/net/tso.h | 6 +++---
 net/core/tso.c    | 6 +++---
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/include/net/tso.h b/include/net/tso.h
index d9b0a14b2a57b388ae4518fc63497ffd600b8887..32d9272ade6af0e3dd1272ecafa948f1535ea61f 100644
--- a/include/net/tso.h
+++ b/include/net/tso.h
@@ -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 */
diff --git a/net/core/tso.c b/net/core/tso.c
index d4d5c077ad7293aa71c3a64f67629e1079060227..56487e3bb26dc01b65f73f96fd0157bec73ea0d0 100644
--- a/net/core/tso.c
+++ b/net/core/tso.c
@@ -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;
-- 
2.27.0.290.gba653c62da-goog